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WO2021088068A1 - 通信方法、装置及系统 - Google Patents

通信方法、装置及系统 Download PDF

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Publication number
WO2021088068A1
WO2021088068A1 PCT/CN2019/116868 CN2019116868W WO2021088068A1 WO 2021088068 A1 WO2021088068 A1 WO 2021088068A1 CN 2019116868 W CN2019116868 W CN 2019116868W WO 2021088068 A1 WO2021088068 A1 WO 2021088068A1
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WO
WIPO (PCT)
Prior art keywords
cell
time period
terminal device
candidate
information
Prior art date
Application number
PCT/CN2019/116868
Other languages
English (en)
French (fr)
Inventor
严乐
耿婷婷
胡星星
曾清海
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202411223026.2A priority Critical patent/CN119316899A/zh
Priority to CN201980101967.XA priority patent/CN114616862B/zh
Priority to EP19951355.7A priority patent/EP4057689A4/en
Priority to PCT/CN2019/116868 priority patent/WO2021088068A1/zh
Priority to BR112022008755A priority patent/BR112022008755A2/pt
Priority to CA3157365A priority patent/CA3157365A1/en
Publication of WO2021088068A1 publication Critical patent/WO2021088068A1/zh
Priority to US17/738,233 priority patent/US20220264401A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/305—Handover due to radio link failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover

Definitions

  • This application relates to the field of mobile communication technology, in particular to communication methods, devices and systems.
  • a network device sends a handover message containing configuration information of a target cell to a terminal device, so that the terminal device attempts to access or switch to the target cell according to the configuration information.
  • the successful transmission of the handover message is a necessary condition to ensure the successful handover under the traditional handover mechanism.
  • the handover message transmission will fail, which will lead to handover failure and reduce the handover success rate.
  • conditional handover mechanism In view of the above-mentioned problems of traditional handover, a conditional handover mechanism is currently proposed to improve the handover success rate and robustness.
  • the network device sends the configuration information of at least one candidate cell to the terminal device, so that the terminal device determines the target cell according to the configuration information, and attempts to access or switch to the target cell, wherein the The target cell belongs to the at least one candidate cell.
  • handover parameters eg, configuration information of the target cell, configuration information of at least one candidate cell, etc.
  • MRO mobility robustness optimization
  • the current mobile robustness optimization mechanism is only for the traditional handover mechanism, but for the conditional handover mechanism, there is currently no corresponding mobile robustness optimization mechanism.
  • the present application provides a communication method, device, and system that use the conditions reported in the report to switch the relevant information in the process, thereby improving the reliability and robustness of the system.
  • the present application provides a communication method, including: receiving first indication information from a first network device, where the first indication information is used to request a terminal device to report first information; and reporting all information to the first network device.
  • the first information wherein, a radio link failure occurs in the source cell of the terminal device, or a traditional handover fails, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, the terminal
  • the first information includes one or more of the following: The identification information of the first cell, the index information corresponding to the first cell, the signal quality corresponding to the first cell when the terminal device successfully accesses the first cell, the success reason value, or, the Information indicating that the first cell satisfies the cell selection criterion and is successfully accessed; wherein, the first cell belongs to the first network device, the at least one candidate cell is indicated by the RRC reconfiguration message from the
  • the terminal device can report the recorded related information in the conditional switching process to the first network device, so that the first network device or other network devices can perform switching parameters (such as traditional switching configuration information or conditional switching) according to the obtained related information. Configuration information) to improve the reliability and robustness of the system.
  • the method before the receiving the first indication information from the first network device, the method further includes: receiving indication information for instructing to record the first information.
  • This indication information may be referred to as second indication information.
  • the second indication information may come from the above-mentioned second network device.
  • the method before the receiving the first indication information from the first network device, the method further includes: sending to the first network device indication information for indicating that the recording of the first information has been completed.
  • This indication information may be referred to as third indication information.
  • the third instruction information may be sent to the first network device.
  • the above-mentioned second indication information may be included in the RRC reconfiguration message (the RRC reconfiguration message may be an RRC message containing CHO configuration information, or an RRC message used for traditional handover (ie, handover message)).
  • the UE may include the recorded related information in the corresponding scenario (that is, part or all of the above-mentioned first information) in the RRC reconfiguration complete message sent to the network device to which the first cell successfully accessed belongs.
  • the above-mentioned third indication information may also be included in the RRC reconfiguration complete message.
  • the present application provides a communication method, including: receiving first indication information from a first network device, where the first indication information is used to request a terminal device to report first information; and reporting all information to the first network device.
  • the first information wherein, after the terminal device receives the RRC message containing the conditional handover configuration information, it determines the first candidate cell that satisfies the condition for performing the conditional handover, and the terminal device and the first candidate cell
  • the first information includes one or more of the following: identification information of the first candidate cell, index information corresponding to the first candidate cell, and the terminal device successfully accessing the first candidate
  • the signal quality corresponding to the first candidate cell, the value of the reason for success, the indication information that the first candidate cell satisfies the conditional handover execution conditions and the access is successful, or the terminal device successfully accesses the first candidate cell Signal quality corresponding to some or all of the candidate cells in at least one candidate cell except the first candidate cell; wherein, the first network device is a network device to
  • the terminal device can report the recorded related information in the conditional switching process to the first network device, so that the first network device or other network devices can perform switching parameters (such as traditional switching configuration information or conditional switching) according to the obtained related information. Configuration information) to improve the reliability and robustness of the system.
  • the method before the receiving the first indication information from the first network device, the method further includes: receiving indication information for instructing to record the first information.
  • This indication information may be referred to as second indication information.
  • the second indication information may come from the above-mentioned second network device.
  • the method before the receiving the first indication information from the first network device, the method further includes: sending to the first network device indication information for indicating that the recording of the first information has been completed.
  • This indication information may be referred to as third indication information.
  • the third instruction information may be sent to the first network device.
  • the above-mentioned second indication information may be included in the RRC reconfiguration message (the RRC reconfiguration message may be an RRC message containing CHO configuration information, or an RRC message used for traditional handover (ie, handover message)).
  • the UE may include the recorded related information in the corresponding scenario (that is, part or all of the above-mentioned first information) in the RRC reconfiguration complete message sent to the network device to which the first cell successfully accessed belongs.
  • the above-mentioned third indication information may also be included in the RRC reconfiguration complete message.
  • the present application provides a communication method, including: receiving first indication information from a first network device, where the first indication information is used to request a terminal device to report the first information; The first information; wherein, a radio link failure occurs in the source cell of the terminal device, or a traditional handover fails, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, the terminal
  • the first information includes one or more of the following: The identification information of the first cell, the index information corresponding to the first cell, the conditional handover configuration information corresponding to the first cell, and the information corresponding to the first cell when the terminal device fails to access the first cell Signal quality, failure reason value, or indication information indicating that the first cell satisfies the cell selection criteria and failed to access; wherein, the first network device is the network device to which the cell is re-established, or the cell in the RRC establishment process
  • the first network device is the network device to which the cell is re-established, or the cell in the RRC establishment process
  • the terminal device can report the recorded related information in the conditional switching process to the first network device, so that the first network device or other network devices can perform switching parameters (such as traditional switching configuration information or conditional switching) according to the obtained related information. Configuration information) to improve the reliability and robustness of the system.
  • the method before the receiving the first indication information from the first network device, the method further includes: receiving indication information for instructing to record the first information.
  • This indication information may be referred to as second indication information.
  • the second indication information may come from the above-mentioned second network device.
  • the method before the receiving the first indication information from the first network device, the method further includes: sending to the first network device indication information for indicating that the recording of the first information has been completed. This indication information may be referred to as third indication information.
  • the third instruction information may be sent to the first network device.
  • the above-mentioned second indication information may be included in the RRC reconfiguration message (the RRC reconfiguration message may be an RRC message containing CHO configuration information, or an RRC message used for traditional handover (ie, handover message)).
  • the first network device may be the network device to which the re-established cell belongs, and the UE may include the recorded relevant information in the corresponding scene (ie, the first) in the RRC re-establishment complete message sent to the network device to which the re-established cell belongs. Part or all of a message).
  • the RRC re-establishment complete message may also include third indication information.
  • the first network device may be the network device to which the cell in the RRC establishment process belongs, and the UE may include the recorded corresponding scenario in the RRC establishment complete message sent to the network device to the cell in the RRC establishment process.
  • Related information that is, part or all of the first information.
  • the RRC establishment complete message may also include third indication information.
  • the present application provides a communication method, including: receiving first indication information from a first network device, where the first indication information is used to request a terminal device to report first information; and reporting all information to the first network device.
  • the first information wherein a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, and the cell
  • the first information includes one or more of the following: cell identification information of the re-established cell, and the signal corresponding to the re-established cell when the re-establishment procedure is performed Quality, re-establishment reason value, indication information indicating that the cell selected by the terminal device after cell selection meets the cell selection criteria but does not belong to at least one candidate cell, or, when the terminal device performs the re-establishment process, part or part of at least one candidate cell
  • the terminal device can report the recorded related information in the conditional switching process to the first network device, so that the first network device or other network devices can perform switching parameters (such as traditional switching configuration information or conditional switching) according to the obtained related information. Configuration information) to improve the reliability and robustness of the system.
  • the method before the receiving the first indication information from the first network device, the method further includes: receiving indication information for instructing to record the first information.
  • This indication information may be referred to as second indication information.
  • the second indication information may come from the above-mentioned second network device.
  • the method before the receiving the first indication information from the first network device, the method further includes: sending to the first network device indication information for indicating that the recording of the first information has been completed.
  • This indication information may be referred to as third indication information.
  • the third instruction information may be sent to the first network device.
  • the above-mentioned second indication information may be included in the RRC reconfiguration message (the RRC reconfiguration message may be an RRC message containing CHO configuration information, or an RRC message used for traditional handover (ie, handover message)).
  • the first network device may be the network device to which the re-established cell belongs, and the UE may include the recorded relevant information in the corresponding scene (ie, the first) in the RRC re-establishment complete message sent to the network device to which the re-established cell belongs. Part or all of a message).
  • the RRC re-establishment complete message may also include third indication information.
  • the first network device may be the network device to which the cell in the RRC establishment process belongs, and the UE may include the recorded corresponding scenario in the RRC establishment complete message sent to the network device to the cell in the RRC establishment process.
  • Related information that is, part or all of the first information.
  • the RRC establishment complete message may also include third indication information.
  • the present application provides a communication method, including: a first network device sends first instruction information to a terminal device, the first instruction information is used to request the terminal device to report first information; The terminal device receives the first information; wherein a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device is connected to a first candidate cell that meets the execution conditions of the conditional handover.
  • the first information includes the following One or more items: identification information of the first cell, index information corresponding to the first cell, signal quality corresponding to the first cell when the terminal device successfully accesses the first cell, and reason for success Value, or, indicating that the first cell satisfies the cell selection criteria and is successfully accessed; wherein, the first cell belongs to the first network device, and the at least one candidate cell is determined by the RRC from the second network device.
  • the reconfiguration message indicates that the second network device is the network device to which the source cell belongs, and the first candidate cell is one of the at least one candidate cell.
  • the terminal device can report the recorded related information in the conditional switching process to the first network device, so that the first network device or other network devices can perform switching parameters (such as traditional switching configuration information or conditional switching) according to the obtained related information. Configuration information) to improve the reliability and robustness of the system.
  • the method before sending the first indication information to the terminal device, the method further includes: receiving, from the terminal device, indication information for indicating that the recording of the first information has been completed.
  • the present application provides a communication method, including: a first network device sends first indication information to a terminal device, where the first indication information is used to request the terminal device to report first information; The terminal device receives the first information; wherein, after the terminal device receives the RRC message containing the conditional handover configuration information, it determines the first candidate cell that satisfies the execution condition of the conditional handover, and the terminal device and In the case where the access of the first candidate cell is successful, the first information includes one or more of the following: identification information of the first candidate cell, index information corresponding to the first candidate cell, and the terminal device successfully accessed When entering the first candidate cell, the signal quality corresponding to the first candidate cell, the success reason value, the indication information that the first candidate cell satisfies the conditional handover execution conditions and the access is successful, or the terminal device successfully accesses the first The signal quality of some or all of the candidate cells in the at least one candidate cell other than the first candidate cell in the case of a candidate cell; wherein,
  • the terminal device can report the recorded related information in the conditional switching process to the first network device, so that the first network device or other network devices can perform switching parameters (such as traditional switching configuration information or conditional switching) according to the obtained related information. Configuration information) to improve the reliability and robustness of the system.
  • the method before sending the first indication information to the terminal device, the method further includes: receiving, from the terminal device, indication information for indicating that the recording of the first information has been completed.
  • the present application provides a communication method, including: a first network device sends first indication information to a terminal device, the first indication information is used to request the terminal device to report first information; the first network The device receives the first information from the terminal device; wherein a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device and the first candidate that meets the execution condition of the conditional handover If the cell access fails, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device fails to access the first cell, the first information includes the following One or more of: identification information of the first cell, index information corresponding to the first cell, conditional handover configuration information corresponding to the first cell, and failure of the terminal device to access the first cell When the signal quality corresponding to the first cell, the failure reason value, or the indication information that the first cell satisfies the cell selection criteria and failed to access; wherein, the first network device is the network device to which the re-established cell belongs , Or
  • the terminal device can report the recorded related information in the conditional switching process to the first network device, so that the first network device or other network devices can perform switching parameters (such as traditional switching configuration information or conditional switching) according to the obtained related information. Configuration information) to improve the reliability and robustness of the system.
  • the method before sending the first indication information to the terminal device, the method further includes: receiving, from the terminal device, indication information for indicating that the recording of the first information has been completed.
  • the present application provides a communication method, including: a first network device sends first indication information to a terminal device, where the first indication information is used to request the terminal device to report first information; The terminal device receives the first information; wherein a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device is connected to a first candidate cell that meets the execution conditions of the conditional handover.
  • the first information includes one or more of the following: cell identification information of the cell to be re-established, when the re-establishment procedure is performed The signal quality corresponding to the re-established cell, the re-establishment reason value, the indication information that the cell selected by the terminal device after the cell selection meets the cell selection criteria but does not belong to at least one candidate cell, or the terminal device performs the re-establishment process at least one Signal quality corresponding to some or all of the candidate cells; wherein, the first network device is a network device to which a cell belongs to re-establish a cell or a network device to a cell in the RRC establishment process, and the at least one candidate cell is from The RRC reconfiguration message of the second network device indicates that the second network device is a network device to which the source cell belongs, and the first candidate cell is one of the at least one candidate cell.
  • the terminal device can report the recorded related information in the conditional switching process to the first network device, so that the first network device or other network devices can perform switching parameters (such as traditional switching configuration information or conditional switching) according to the obtained related information. Configuration information) to improve the reliability and robustness of the system.
  • the method before sending the first indication information to the terminal device, the method further includes: receiving, from the terminal device, indication information for indicating that the recording of the first information has been completed.
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, so
  • the first information further includes one of the following or Multiple:
  • the terminal device determines the first cell, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device When the terminal device successfully accesses the first cell, the signal quality corresponding to some or all of the candidate cells other than the first cell in the at least one candidate cell.
  • the first information further includes one or more of the following:
  • the signal quality corresponding to some or all of the at least one candidate cell When the execution condition of the conditional handover corresponding to the first candidate cell is satisfied, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device fails to access the first candidate cell, the signal quality corresponding to some or all of the at least one candidate cell.
  • a radio link failure occurs in the source cell of the terminal device, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device successfully connects
  • the first information further includes one or more of the following:
  • Time period 1 is the time period from when the terminal device receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from when a radio link failure occurs in the source cell until the terminal device determines the first cell
  • Time period 3 is a time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 4 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 4, or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 4.
  • the first information further includes one or more of the following:
  • Time period 5 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device receives a traditional handover message
  • Time period 6 the time period 6 is the time period from when the terminal device receives the traditional handover message to when the traditional handover fails
  • Time period 7 is the time period from when the traditional handover fails until the terminal device determines the first cell
  • Time period 8 is the time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 9 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 9, or,
  • the first information further includes one or more of the following:
  • Time period 10 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 11 is the time period from when the terminal device determines that the first candidate cell that satisfies the execution condition of the conditional handover to the terminal device fails to access the first candidate cell
  • Time period 12 is the time period from when the terminal device fails to access the first candidate cell until the terminal device determines the first cell
  • Time period 13 is a time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 14 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 14, or,
  • a time period constituted by any two or more consecutive time periods from the time period 10 to the time period 14.
  • the terminal device After the terminal device receives the RRC message containing the conditional handover configuration information, it determines the first candidate cell that satisfies the execution condition of the conditional handover, and the terminal device and the first candidate cell When the access of the candidate cell is successful, the first information includes one or more of the following: identification information of the first candidate cell, index information corresponding to the first candidate cell, and the terminal device successfully accesses the first candidate cell.
  • the terminal device When a candidate cell is a candidate cell, the signal quality corresponding to the first candidate cell, the value of the reason for success, the indication information that the first candidate cell satisfies the conditional handover execution conditions and the access is successful, or the terminal device successfully accesses the first candidate cell Signal quality corresponding to some or all of the candidate cells in the at least one candidate cell except the first candidate cell.
  • the terminal device After the terminal device receives the RRC message containing the conditional handover configuration information, it determines the first candidate cell that satisfies the execution condition of the conditional handover, and the terminal device and the first candidate cell When the candidate cell is successfully accessed, the first information includes one or more of the following: cell identification information of the source cell, or signal quality corresponding to the source cell.
  • the terminal device after the terminal device receives the RRC message containing the conditional handover configuration information, it determines the first candidate cell that satisfies the execution condition of the conditional handover, and the terminal device and the first candidate cell
  • the first information includes one or more of the following: the signal quality corresponding to some or all of the at least one candidate cell when the measurement report is reported, and the terminal equipment determines The signal quality corresponding to some or all of the at least one candidate cell when the first candidate cell is selected, and some or all of the candidate cells in the at least one candidate cell when the terminal device receives an RRC message containing conditional handover configuration information The corresponding signal quality, or the signal quality corresponding to some or all of the candidate cells in at least one candidate cell when the terminal device sends the RRC reconfiguration complete message to the first candidate cell.
  • the terminal device After the terminal device receives the RRC message containing the conditional handover configuration information, it determines the first candidate cell that satisfies the execution condition of the conditional handover, and the terminal device and the first candidate cell In the case that the access of the candidate cell is successful, the first information includes one or more of the following:
  • Time period 1 is the time period from the receipt of the RRC message containing the conditional handover configuration information to the determination of the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 2 is a time period in which it is determined that the first candidate cell that satisfies the execution condition of the conditional handover is successfully connected to the terminal device and the first candidate cell.
  • Time period 3 is the time period from when the terminal device successfully accesses the first candidate cell to when the terminal device reports the time period 3, or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 3.
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, so
  • the first information further includes one or more of the following item:
  • the terminal device determines the first cell, the signal quality corresponding to some or all of the at least one candidate cell,
  • the terminal device fails to access the first cell, the signal quality corresponding to some or all of the candidate cells other than the first cell in the at least one candidate cell, or,
  • the terminal device When the terminal device performs the re-establishment procedure, the signal quality corresponding to some or all of the candidate cells other than the first cell in the at least one candidate cell.
  • the terminal device when the terminal device fails to access the first candidate cell that meets the execution condition of the conditional handover, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, And when the terminal device fails to access the first cell, the first information further includes one or more of the following:
  • the signal quality corresponding to some or all of the at least one candidate cell When the execution condition of the conditional handover corresponding to the first candidate cell is satisfied, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device fails to access the first candidate cell, the signal quality corresponding to some or all of the at least one candidate cell.
  • a radio link failure occurs in the source cell of the terminal device, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device accesses
  • the first information further includes one or more of the following:
  • Time period 1 is the time period from when the terminal device receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from the occurrence of a radio link failure in the source cell until the terminal device determines the first cell
  • Time period 3 is the time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 4 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell;
  • Time period 5 is the time period from when the terminal device determines to re-establish a cell until the terminal device reports the time period 5, or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 5.
  • the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device fails to access the first cell ,
  • the first information further includes one or more of the following:
  • Time period 6 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device receives the traditional handover message
  • Time period 7 is the time period from when the terminal device receives the traditional handover message to when the traditional handover fails
  • Time period 8 is the time period from when the traditional handover fails until the terminal device determines the first cell
  • Time period 9 is the time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 10 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell
  • Time period 11 is the time period from when the terminal device determines that a cell is re-established until the terminal device reports the time period 11, or,
  • a time period constituted by any two or more consecutive time periods from the time period 6 to the time period 11.
  • the terminal device when the terminal device fails to access the first candidate cell that meets the execution condition of the conditional handover, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, And when the terminal device fails to access the first cell, the first information further includes one or more of the following:
  • Time period 12 is the time period from when the terminal device receives the RRC reconfiguration message until the terminal device determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 13 is a time period from when the terminal device determines that the first candidate cell that satisfies the execution condition of the conditional handover to the terminal device and the first candidate cell fails to access;
  • Time period 14 is the time period from when the terminal device fails to access the first candidate cell until the terminal device determines the first cell
  • Time period 15 is a time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 16 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell;
  • Time period 17 is the time period from when the terminal device determines that a cell is re-established to when the terminal device reports the time period 17, or,
  • a time period constituted by any two or more consecutive time periods from the time period 12 to the time period 17.
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, and
  • the first information further includes one or more of the following: cell identification information of the cell to be re-established, and cell re-establishment when the re-establishment procedure is performed.
  • Corresponding signal quality, re-establishment reason value, indication information that the cell selected by the terminal device after cell selection meets the cell selection criteria but does not belong to at least one candidate cell, or the terminal device is in at least one candidate cell when the terminal device performs the re-establishment process The signal quality corresponding to some or all of the candidate cells.
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, and
  • the first information further includes one or more of the following: cell identification information of the source cell, and signal quality corresponding to the source cell.
  • the first information when a radio link failure occurs in the source cell of the terminal device, the first information further includes one or more of the following: failure reason value, occurrence of the source cell Indication information of radio link failure, or signal quality corresponding to at least one candidate cell when radio link failure occurs in the source cell.
  • the first information further includes one or more of the following: the cell identification information of the target cell, and the corresponding information of the target cell Signal quality, failure reason value, indication information of traditional handover failure, or signal quality corresponding to at least one candidate cell when traditional handover fails.
  • the first information also includes one or more of the following: cell identification information of the first candidate cell, index information corresponding to the first candidate cell, conditional handover configuration information corresponding to the first candidate cell, terminal device access or handover
  • the first candidate cell fails, the signal quality corresponding to the first candidate cell, the failure reason value, the indication information that the first candidate cell meets the conditional handover execution conditions but the terminal device access or handover fails, the terminal device access or handover to the first candidate cell
  • a candidate cell fails, the signal quality corresponding to other candidate cells, the signal quality corresponding to the first candidate cell when the execution condition of the conditional handover corresponding to the first candidate cell is satisfied, or the signal quality corresponding to the conditional handover corresponding to the first candidate cell
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, and
  • the first information further includes one or more of the following: some or all of the candidates in the at least one candidate cell when the measurement report is reported The signal quality corresponding to the cell, the signal quality corresponding to some or all of the candidate cells in at least one candidate cell when the terminal device receives the RRC message containing the conditional handover configuration information, and the signal quality of some or all of the candidate cells in the at least one candidate cell when the RRC re-establishment fails.
  • the signal quality corresponding to all candidate cells, the signal quality corresponding to some or all of the at least one candidate cell when the RRC establishment process is successful, or some or all of the candidate cells in the at least one candidate cell when the RRC re-establishment is successful Signal quality.
  • the first information further includes one or more of the following:
  • Time period 1 is the time period from when the terminal device receives the RRC reconfiguration message to the occurrence of a radio link failure in the source cell
  • Time period 2 is the time period from when a radio link failure occurs in the source cell until the terminal device determines the second cell
  • Time period 3 is the time period from which the terminal device determines the second cell to the terminal device to report the time period 3, or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 3.
  • the first information further includes one or more of the following:
  • Time period 4 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device receives the traditional handover message
  • Time period 5 is the time period from when the terminal device receives the traditional handover message to the time when the traditional handover fails
  • Time period 6 the time period 6 is the time period from when the traditional handover fails until the terminal device determines the second cell
  • Time period 7 is the time period from which the terminal device determines the second cell to the terminal device to report the time period 7, or,
  • the first information also includes one or more of the following:
  • Time period 8 is the time period from when the terminal device receives the RRC reconfiguration message until the terminal device determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 9 is a time period during which the terminal device determines that the first candidate cell that satisfies the execution condition of the conditional handover to the terminal device and the first candidate cell handover or access fails,
  • Time period 10 is the time period from when the terminal device switches to the first candidate cell or fails to access until the terminal device determines the second cell
  • Time period 11 is the time period from which the terminal device determines the second cell and the terminal device reports the time period 11, or,
  • a time period constituted by any two or more consecutive time periods from the time period 8 to the time period 11.
  • the present application provides a communication device.
  • the device may be a terminal device or a chip for the terminal device.
  • the device has the function of realizing any one of the above-mentioned first to fourth aspects and the first to fourth aspects. This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the present application provides a communication device, which may be a network device or a chip for the network device.
  • the device has the function of realizing any of the above-mentioned fifth aspect to eighth aspect and the fifth aspect to the eighth aspect of the embodiments.
  • This function can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the present application provides a communication device including a processor and a memory; the memory is used to store computer-executable instructions.
  • the processor executes the computer-executable instructions stored in the memory to enable the A method for the device to perform the functions of any of the above-mentioned first aspect to eighth aspect and the first aspect to the eighth aspect of the embodiments.
  • the present application provides a communication device, including a unit or means for executing each step of any of the above-mentioned first to eighth aspects and the first to eighth aspects ( means).
  • the present application provides a communication device, including a processor and an interface circuit, the processor is configured to communicate with other devices through the interface circuit, and execute the first aspect to the eighth aspect, and the first aspect to the eighth aspect.
  • the processor includes one or more.
  • the present application provides a communication device, including a processor, configured to be connected to a memory, and used to call a program stored in the memory to execute the above-mentioned first to eighth aspects, and first to eighth aspects.
  • the memory can be located inside the device or outside the device.
  • the processor includes one or more.
  • this application also provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which when run on a computer, cause a processor to execute the first to eighth aspects, The method described in any of the embodiments of the first aspect to the eighth aspect.
  • the present application also provides a computer program product including instructions, which when run on a computer, causes the computer to execute the embodiments of the first aspect to the eighth aspect, and the first aspect to the eighth aspect.
  • a computer program product including instructions, which when run on a computer, causes the computer to execute the embodiments of the first aspect to the eighth aspect, and the first aspect to the eighth aspect. The method described in any of the embodiments.
  • the present application also provides a chip system, including: a processor, configured to execute any of the above-mentioned first aspect to eighth aspect, and any of the first to eighth aspects. method.
  • this application also provides a communication system, including: a first network device and a terminal device;
  • the first network device is configured to send first indication information to the terminal device, where the first indication information is used to request the terminal device to report the first information;
  • the terminal device is configured to report the first information to the first network device
  • the first information includes one or more of the following:
  • the at least one candidate cell is indicated by an RRC reconfiguration message from a second network device, and the second network device is a network device to which the source cell belongs,
  • the first candidate cell is one of the at least one candidate cell.
  • this application also provides a communication system, including: a first network device and a terminal device;
  • the first network device is configured to send first indication information to the terminal device, where the first indication information is used to request the terminal device to report the first information;
  • the terminal device is configured to report the first information to the first network device
  • the terminal device After the terminal device receives the RRC message containing the conditional handover configuration information, it determines the first candidate cell that satisfies the execution condition of the conditional handover, and the access between the terminal device and the first candidate cell is successful
  • the first information includes one or more of the following:
  • the identification information of the first candidate cell, the index information corresponding to the first candidate cell, the signal quality corresponding to the first candidate cell when the terminal device successfully accesses the first candidate cell, the success reason value, and the first candidate cell satisfies the conditions Handover execution conditions and indication information of successful access, or, when the terminal device successfully accesses the first candidate cell, some or all of the candidate cells among the at least one candidate cell other than the first candidate cell Corresponding signal quality;
  • the first network device is a network device to which a first candidate cell belongs
  • the at least one candidate cell is indicated by an RRC reconfiguration message from a second network device
  • the second network device is a network device to which the source cell belongs
  • the first candidate cell is one of the at least one candidate cell.
  • this application also provides a communication system, including: a first network device and a terminal device;
  • the first network device is configured to send first indication information to the terminal device, where the first indication information is used to request the terminal device to report the first information;
  • the terminal device is configured to report the first information to the first network device
  • the first information includes one or more of the following:
  • the at least one candidate cell is indicated by an RRC reconfiguration message from a second network device, and the second network device is a network device to which the source cell belongs,
  • the first candidate cell is one of the at least one candidate cell.
  • this application also provides a communication system, including: a first network device and a terminal device;
  • the first network device is configured to send first indication information to the terminal device, where the first indication information is used to request the terminal device to report the first information;
  • the terminal device is configured to report the first information to the first network device
  • the first information includes one or more of the following:
  • the first network device is a network device to which a re-established cell belongs or a network device to which a cell in an RRC establishment process belongs, and the at least one candidate cell is indicated by an RRC reconfiguration message from a second network device.
  • the second network device is a network device to which the source cell belongs, and the first candidate cell is one of the at least one candidate cell.
  • Figure 1 is a schematic diagram of a network architecture applicable to this application
  • Fig. 2 is a schematic flow diagram of a communication method provided by this application.
  • FIG. 3 is a schematic diagram of a communication device provided by this application.
  • FIG. 4 is a schematic diagram of another communication device provided by this application.
  • Figure 5 is a schematic diagram of a terminal device provided by this application.
  • Fig. 6 is a schematic diagram of a network device provided by this application.
  • FIG. 1 it is a schematic diagram of a network architecture to which this application applies, including terminal equipment and network equipment.
  • the terminal device communicates with the network device through a wireless interface.
  • the terminal device can be a wireless terminal device that can receive network device scheduling and instruction information.
  • the wireless terminal device can be a device that provides voice and/or data connectivity to the user, or a handheld device with wireless connection function, or connected to a wireless modem Other processing equipment.
  • a wireless terminal device can communicate with one or more core networks or the Internet via a wireless access network (e.g., radio access network, RAN).
  • the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular" phone). , Mobile phones), computers, and data cards, for example, may be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, and they exchange language and/or data with the wireless access network.
  • Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station (MS), remote station (remote station), access point ( access point (AP), remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc.
  • the terminal device can also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G network or a terminal device in a public land mobile network (PLMN) network that will evolve in the future, or a terminal in an NR communication system Equipment, etc.
  • a terminal device in a 5G network or a terminal device in a public land mobile network (PLMN) network that will evolve in the future, or a terminal in an NR communication system Equipment, etc.
  • PLMN public land mobile network
  • the terminal device is the UE as an example for description.
  • a network device is an entity used to transmit or receive signals on the network side, such as a generation NodeB (gNodeB).
  • the network device may be a device used to communicate with mobile devices.
  • the network equipment can be an AP in a wireless local area network (WLAN), an evolved Node B (eNB or eNodeB) in a long term evolution (LTE), or a relay station or an access point, or In-vehicle equipment, wearable equipment, and network equipment in the future 5G network or network equipment in the future evolved public land mobile network (PLMN) network, or gNodeB in the NR system, etc.
  • WLAN wireless local area network
  • eNB or eNodeB evolved Node B
  • LTE long term evolution
  • PLMN public land mobile network
  • the network equipment provides services for the cell, and the terminal equipment communicates with the network equipment through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
  • the cell may be a network equipment. (E.g. base station)
  • the corresponding cell the cell can belong to a macro base station or a base station corresponding to a small cell.
  • the small cell here can include: Metro cell, Micro cell, and Pico cell. (Pico cell), femto cell (Femto cell), etc., these small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
  • the network device may be another device that provides wireless communication functions for the terminal device.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • devices that provide wireless communication functions for terminal devices are collectively referred to as network devices.
  • the mobility management of a connected UE is controlled by a network device, that is, the network device sends a handover message to the UE to instruct the UE to switch.
  • the source base station sends a handover message to the UE to control the UE to switch from the source cell to the target cell.
  • the traditional handover refers to that the network device to which the source cell belongs sends the configuration information of the target cell to the UE, so that the UE attempts to access or handover to the target cell according to the configuration information.
  • the above handover message may be a radio resource control (radio resource control, RRC) message.
  • RRC radio resource control
  • the RRC message in the NR system may be an RRC reconfiguration message carrying a synchronization reconfiguration information element (reconfiguration with sync).
  • the RRC message may be an RRC connection reconfiguration message carrying a mobility control information element (mobility control info).
  • the handover message contains the relevant information of the target cell and the relevant configuration parameters required by the UE to access the target cell.
  • the handover message can contain the physical cell identifier (PCI) of the target cell and the frequency information corresponding to the target cell.
  • PCI physical cell identifier
  • RACH Random Access Channel
  • the UE accesses the target cell according to the content contained in the handover message. Therefore, the successful transmission of the handover message is a necessary condition to ensure successful handover under the traditional handover mechanism.
  • the rapid attenuation of channel quality, or the rapid movement of the UE and the obstruction of objects, or the longer duration of measurement and handover preparation, etc. will cause the handover message to fail to send, which will lead to handover failure and degradation. Handover success rate.
  • the network can configure one or more candidate cells for the UE. Specifically, if the network configures multiple candidate cells for the UE, the network may send the CHO configuration information corresponding to the multiple candidate cells to the UE through one RRC message or multiple RRC messages.
  • the above-mentioned RRC message may be a newly defined message (such as CondRRCReconfiguration, or other naming/expression forms, which are not limited) or reuse an existing RRC message (such as reusing an RRC reconfiguration message.
  • the RRC message may be The RRC reconfiguration message, or the RRC message may also be an RRC connection reconfiguration message).
  • conditional handover means that the network device to which the source cell belongs sends configuration information of at least one candidate cell to the UE, and the UE determines the target cell according to the configuration information, and attempts to access or handover to the target cell , Wherein the target cell belongs to the at least one candidate cell.
  • the source base station sends the RRC message to the UE when the source link signal quality is good, and the RRC message may include CHO configuration information corresponding to each candidate cell.
  • the CHO configuration information may include CHO trigger condition (or execution condition) information and candidate cell related information.
  • the relevant information of the candidate cell may include one or more of the following:
  • the index information is used to identify the candidate cell.
  • the index information may be the measurement identifier measID corresponding to the cell and/or the CHO configuration identifier CHO-ConfigId corresponding to the cell, or other manifestations, which are not limited in this implementation;
  • CGI Cell Global Identification
  • ECGI Evolved Cell Global Identifier
  • the frequency information corresponding to the candidate cell may specifically include one or more of the following: absolute frequency of the synchronization signal block (Synchronization Signal Block, SSB) (such as absolute FrequencySSB), reference resource block (such as common resource block 0 common RB0)
  • the absolute frequency position (such as absoluteFrequencyPointA), the frequency bandwidth list (such as frequencyBandList), or the subcarrier spacing SCS specific carrier list (such as scs-SpecificCarrierList);
  • the packet data convergence protocol Packet Data Convergence Protocol, PDCP
  • PDCP Packet Data Convergence Protocol
  • SDAP Service Data Adaptation Protocol
  • the CHO trigger condition (or execution condition) information may include the CHO execution event type and the corresponding threshold value.
  • CHO execution event types can include A1 event, A2 event, A3 event, A4 event, A5 event, B1 event, B2 event, or other execution event types.
  • event A1 the signal quality of the serving cell is better than a certain threshold
  • event A2 the signal quality of the serving cell is worse than a certain threshold
  • event A3 the signal quality of the neighboring cell is better than the special cell SpCell (the special cell can include the primary cell PCell or The signal quality of the primary and secondary cell (PSCell) is higher than a certain threshold
  • A4 event the signal quality of the neighboring cell is better than a certain threshold
  • A5 event the signal quality of the special cell is lower than a certain threshold 1, and the signal quality of the neighboring cell is higher than a certain threshold 2
  • Event B1 The signal quality of the neighboring cell across RAT (Radio Access Technology) is better than a certain threshold
  • Event B2 The signal quality of the PCell is lower than the threshold 3 and the signal quality of the neighboring cell across the RAT is higher than the threshold 4.
  • a candidate cell may be configured with one or more execution conditions of CHO.
  • a candidate cell may be configured with one execution event type, but configured with at least one threshold and/or at most two different triggers.
  • the trigger quantity may include, for example, reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), and signal to interference plus noise ratio (SINR).
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • SINR signal to interference plus noise ratio
  • a candidate cell may also be configured with at least one execution event type and a threshold value corresponding to each execution event type.
  • the CHO execution event type and/or the threshold value corresponding to the execution event type corresponding to different candidate cells may be the same or different, and are not limited.
  • the UE judges whether the candidate cell meets the execution condition of CHO according to the RRC message, and takes the candidate cell that meets the execution condition of CHO as the target cell. Specifically, the UE judges whether the execution condition of the CHO is satisfied according to the CHO configuration information.
  • the configured CHO execution event type is A3 event
  • the configured corresponding threshold is the first threshold (it should be noted that for different trigger quantities, the first threshold may be the same or different )
  • the cell signal quality of candidate cell A the signal quality includes one or more of RSRP, RSRQ, and SINR, for example, the signal quality includes RSRP and RSRQ, or the signal quality includes RSRP and SINR, or others, This is not limited
  • the candidate cell A can be considered to meet the execution condition of CHO, and the candidate cell A can be determined as the target cell.
  • candidate cell B configure event A3, and configure two trigger quantities, for example, RSRP and RSRQ, the configured first threshold corresponding to RSRP is E, and the configured first threshold corresponding to RSRQ is F, then
  • the RSRP of the candidate cell A is higher than the RSRP of the serving cell by E, and the RSRQ of the candidate cell A is higher than the RSRQ of the serving cell by F, the candidate cell A can be considered to meet the execution conditions of CHO, and the candidate cell A can be determined as Target cell.
  • candidate cell B if the configured CHO execution event type is A5 event, and the configured corresponding thresholds are the second threshold and the third threshold, then when the cell signal quality of candidate cell B is higher than the first When the second threshold and the cell signal quality of the serving cell is lower than the third threshold, it can be considered that the candidate cell B meets the execution condition of CHO, and the candidate cell B can be determined as the target cell.
  • Scenario 1 After the UE determines at least one target cell that meets the execution conditions of CHO among the candidate cells (this target cell may be called the first candidate cell) (in the existing CHO mechanism, the UE first determines a target cell based on the CHO configuration information). After the target cell that meets the execution conditions of CHO, it will no longer judge whether other candidate cells meet the execution conditions of CHO, and start timer T1 (T1 can be predefined by the protocol, or the RRC message containing the CHO configuration information contains the timer T1 related information, such as the effective duration of T1), and the UE attempts to access or switch to the determined target cell, for example, the UE performs a random access process with the determined target cell.
  • start timer T1 T1 can be predefined by the protocol, or the RRC message containing the CHO configuration information contains the timer T1 related information, such as the effective duration of T1
  • This situation 1 also includes situation 1.1 or situation 1.2.
  • the UE performs cell selection (for example, selecting a cell that satisfies the S criterion).
  • the cell selection is divided into the following situation 1.2.1 or situation 1.2.2:
  • the UE if the selected cell is one of at least one candidate cell, the UE attempts to switch to the cell (the cell may be referred to as the first cell), for example, the UE performs a random access procedure with the first cell .
  • the situation 1.2.1 can be further divided into the following situation 1.2.1.1 or situation 1.2.1.2.
  • the UE performs a re-establishment procedure.
  • the UE may skip the random access process, that is, not perform the random access process. That is, after the UE determines the target cell, it may not perform the random access procedure, but send an RRC reconfiguration complete message to the target network device (for example, if the above RRC message containing the CHO configuration information contains RACH-less HO related Information, such as TA information, UL grant information, etc., where RACH-less HO related information corresponds to at least one candidate cell, and the UE may not perform a random access process with the determined target cell).
  • RRC reconfiguration complete message for example, if the above RRC message containing the CHO configuration information contains RACH-less HO related Information, such as TA information, UL grant information, etc., where RACH-less HO related information corresponds to at least one candidate cell, and the UE may not perform a random access process with the determined target cell.
  • the UE Before the UE determines the target cell that meets the execution conditions of CHO among at least one candidate cell according to the CHO configuration information (the target cell may be called the first candidate cell), or the UE determines the target cell (ie, the first candidate cell). After a candidate cell) but before successfully handing over to the target cell, if a radio link failure (Radio Link Failure, RLF) occurs in the source cell, the UE performs cell selection (such as selecting a cell that satisfies the S criterion, where the S criterion can be The existing S criterion in cell selection may also be the S criterion in subsequent cell selection, which is not limited here).
  • RLF Radio Link Failure
  • the cell selection is divided into the following situation 2.1 or situation 2.2:
  • the UE attempts to handover to this cell (this cell may be called the first cell, for example, the UE performs a random access procedure with this cell), in this case 2.1 It can also include the following scenario 2.1.1 or scenario 2.1.2:
  • the UE may send an RRC reconfiguration complete message to the first cell; in the LTE system, the UE may send an RRC connection reconfiguration complete message to the first cell.
  • the UE performs a re-establishment procedure.
  • the source network device can maintain the RRC connection/data transmission with the UE until the UE is successfully handed over to the determined target cell that satisfies the execution conditions of the CHO (this target cell may be called the first candidate cell) ( For example, until the UE sends an RRC reconfiguration complete message or an RRC connection reconfiguration complete message to the successfully accessed target cell). That is to say, after the network sends the RRC message containing the CHO configuration information to the UE for the first time, it can subsequently send another RRC message to the UE, for example, it can send a traditional handover message to the UE.
  • the UE determines the target cell (ie, the first candidate cell) that satisfies the CHO execution condition according to the CHO configuration information
  • the UE stops the CHO process (for example, the UE stops switching from at least one The candidate cell tries to determine the target cell that meets the execution condition of CHO), and performs the traditional handover procedure according to the traditional handover message.
  • the UE receives a traditional handover message after the UE determines the first candidate cell but before it has not successfully switched to the first candidate cell, the UE stops the CHO process (for example, the UE stops and the determined first candidate cell Random access procedure of the cell), the UE performs the traditional handover procedure according to the traditional handover message.
  • the CHO process for example, the UE stops and the determined first candidate cell Random access procedure of the cell
  • This situation 3 also includes situation 3.1 or situation 3.2.
  • Scenario 3.1.1 if the selected cell is one of at least one candidate cell, the UE attempts to switch to this cell (this cell may be called the first cell, for example, the UE performs a random access procedure with this cell), For the following two situations:
  • the UE may send an RRC reconfiguration complete message to the first cell; in the LTE system, the UE may send an RRC connection reconfiguration complete message to the first cell.
  • the UE performs a re-establishment procedure.
  • Scenario 3.2 If the traditional handover procedure is successful, then the UE has a successful access or handover with the target cell included in the handover message.
  • handover parameters are one of the key factors that affect the success rate of traditional handover and conditional handover.
  • the MRO mechanism in order to optimize the handover parameters, the MRO mechanism is introduced, that is, the UE reports relevant information in the traditional handover process. Further, the network equipment can optimize the handover parameters according to the relevant information reported by the UE. Under the MRO mechanism, in the traditional handover process, the UE generally reports relevant parameters during the handover process in the following two scenarios:
  • the handover message is received successfully, but the handover to the target cell is unsuccessful or RLF occurs soon after handover to the target cell. Among them, the handover message contains the configuration information of the target cell, and the specific content will not be repeated.
  • the recording scenarios of the existing MRO include:
  • the information recorded and reported by the UE to the new cell includes some or all of the following: failure reason value (that is, RLF) ,
  • the information of the source cell for example, the cell identification information of the source cell, the signal quality corresponding to the source cell
  • the information of the re-established cell that is, the new cell
  • the re-established cell for example, the cell identification information of the re-established cell, the signal corresponding to the re-established cell
  • the re-established cell can be the target cell or other cells, which is not limited.
  • the information recorded by the UE and reported to the new cell includes some or all of the following: failure reason value (ie, handover failure HOF), source cell information (for example, including cell identification information of the source cell, signal quality corresponding to the source cell) ), the information of the target cell (for example, including the cell identification information of the target cell and the signal quality corresponding to the target cell), and the information of the re-established cell (for example, including the cell identification information of the re-established cell and the signal quality corresponding to the re-established cell), receive The time period to switch the message to the occurrence of the failure and the time period from the occurrence of the failure to the reporting, etc.
  • failure reason value ie, handover failure HOF
  • source cell information for example, including cell identification information of the source cell, signal quality corresponding to the source cell
  • the information of the target cell for example, including the cell identification information of the target cell and the signal quality corresponding to the target cell
  • the information of the re-established cell for example, including the cell identification information of
  • the information of the aforementioned cells may include the identity of the cell, and/or the signal quality corresponding to the cell (the signal quality mentioned in the full text of this application may include the cell signal Quality and/or signal quality of at least one beam belonging to the cell.
  • the signal quality includes RSRP and/or RSRQ and/or SINR.
  • the signal quality may be based on a synchronization signal block (SSB) and/or channel state information reference Signal (Channel Status Information Reference Signal, CSI-RS) Radio Resource Management (Radio Resource Management, RRM) measurement results obtained); where the cell identity can include at least one of the following: PCI, CGI, ECGI, or , The frequency point information corresponding to the cell.
  • SSB synchronization signal block
  • CSI-RS Channel State Information Reference Signal
  • RRM Radio Resource Management
  • the UE sends indication information to the first network device.
  • the indication information is used to indicate that the UE has recorded RLF or HOF related information.
  • the indication information may be included in the RRC establishment complete message, or the RRC reestablishment complete message, or the RRC recovery complete message, or the RRC reconfiguration complete message sent by the UE to the first network device, and is not limited .
  • the first network device sends a request message to the UE (for example, the request message may be a user information request (UEInformationRequest) message), and the UE receives the request message sent by the first network device (reports the UE recorded information to the first network device).
  • the UE sends a user information response (UEInformationResponse) message to the first network device, and the UEInformationResponse message may contain corresponding information recorded by the UE, such as RLF or HOF related information).
  • the first network device may be the source The network equipment to which the cell belongs or the network equipment to which the target cell belongs or the network equipment to which the re-established cell belongs, or other network equipment is not limited.
  • the first network device may send the information reported by the UE To other network devices.
  • the first network device is the network device to which the source cell belongs, and the network device to which the source cell belongs can send part or all of the information reported by the UE to the network device to which the target cell belongs and/or the network device to which the re-established cell belongs.
  • Network equipment; the network equipment to which the target cell belongs or the network equipment to which the re-established cell belongs or the network equipment to which the source cell belongs adjusts the corresponding parameters according to some or all of the received information.
  • the first network device is the one to which the target cell belongs Network equipment
  • the network equipment to which the target cell belongs can send part or all of the information reported by the UE to the network equipment to which the source cell belongs and/or to re-establish the network equipment to which the cell belongs.
  • the network equipment to which the source cell belongs will receive Part or all of the information is sent to the network device to which the re-established cell belongs; the network device to which the source cell belongs or the network device to the target cell or the network device to which the re-established cell belongs performs corresponding parameter calculations based on part or all of the received information Adjustment.
  • the first network device is the network device to which the re-established cell belongs
  • the network device to which the re-established cell belongs may send part or all of the information reported by the UE to the network device to the source cell and/or the network to which the target cell belongs Device, optionally, the network device to which the source cell belongs sends part or all of the received information to the network device to which the target cell belongs; the network device to which the source cell belongs or the network device to which the target cell belongs or the network device to which the reestablished cell belongs The network equipment adjusts the corresponding parameters according to some or all of the received information.
  • the aforementioned mobile robustness optimization mechanism only considers recording and reporting related information generated in the traditional handover mechanism.
  • the relevant information generated in the various scenarios mentioned in the above scenario 1 to scenario 3 also needs to be recorded and reported by the UE, so that the network can adjust the relevant parameters of the conditional switching mechanism and the traditional switching mechanism based on the relevant information , Optimize, and improve system reliability.
  • Frequency information includes but is not limited to one or more of the following: SSB absolute frequency (absoluteFrequencySSB), PointA absolute frequency (absoluteFrequencyPointA), frequency bandwidth list (frequencyBandList), subcarrier spacing (SCS) specific carrier list (scs-SpecificCarrierList).
  • the index information mentioned in any place below can be the measurement identifier (measID) corresponding to the cell, or the CHO-ConfigId corresponding to the cell, or other forms of expression. This implementation does not limit this, and the index The information can be used to identify the cell.
  • each information may be recorded in the same or different variables or information elements, which is not limited in this application.
  • the premise of the following scenarios is that: the UE receives the CHO configuration information of at least one candidate cell (which can be carried in the RRC reconfiguration message or the RRC connection reconfiguration message) from the network device to which the source cell belongs (referred to as the second network device in this application) Message), where the specific content of the CHO configuration information of at least one candidate cell can be referred to the foregoing description, which will not be repeated here.
  • Scenario 1 When RLF occurs in the source cell of the UE, or traditional handover fails, or the UE fails to access or handover with a candidate cell that meets the execution conditions of CHO (called the first candidate cell), the UE performs cell selection. If the UE chooses The exiting cell belongs to at least one candidate cell (for example, the cell is referred to as the first cell), and the UE successfully accesses or is handed over to the first cell.
  • the cell selected by the UE after cell selection belongs to at least one candidate cell (that is, the cell is the first cell), and the UE successfully accesses or switches to the cell, corresponding to the situation 2.1 above .1.
  • the traditional handover fails, if the cell selected by the UE after cell selection belongs to at least one candidate cell (that is, the cell is the first cell), and the UE successfully accesses or switches to the cell, corresponding to the situation 3.1.1.1 above.
  • the UE fails to access or handover with a candidate cell (called the first candidate cell) that meets the execution conditions of CHO, if the cell selected by the UE after cell selection belongs to at least one candidate cell (that is, the cell is the first cell) , And the UE successfully accesses or switches to the first cell, corresponding to the above scenario 1.2.1.1.
  • the UE can record one or more of the following in the corresponding variable or cell:
  • Relevant information corresponding to the successful access or handover to the first cell may include one or more of the following: identification information of the first cell, index information corresponding to the first cell, and signal quality corresponding to the first cell when the UE successfully accesses or switches to the first cell , Success reason value (for example, the reason value is "The first cell satisfies the cell selection criterion (or satisfies the S criterion) and the access or handover is successful"), or the first cell satisfies the cell selection criterion (or satisfies the S criterion) and then Indication of successful entry or handover.
  • Related information corresponding to the source cell may include one or more of the following: cell identification information of the source cell, and signal quality corresponding to the source cell.
  • the UE may also record one or more of the following information: failure cause value (for example, the cause value is "RLF occurred in the source cell"), indication information that RLF occurred in the source cell Or, the signal quality corresponding to at least one candidate cell when RLF occurs in the source cell.
  • the UE may also record the corresponding related information when the traditional handover fails.
  • the UE may include one or more of the following: cell identification information of the target cell (the handover message contains the configuration information of the target cell), the signal quality corresponding to the target cell, and the failure reason value (for example, the reason value is " HOF" or "T304 timeout"), indication information of traditional handover failure (or T304 timeout), or signal quality corresponding to at least one candidate cell when the traditional handover fails (or T304 timeout).
  • the UE may also record the corresponding related information when the UE fails in the access or handover of the first candidate cell.
  • it may include one or more of the following: cell identification information of the first candidate cell, index information corresponding to the first candidate cell, CHO configuration information corresponding to the first candidate cell, UE access or handover to the first candidate.
  • the signal quality and failure reason value corresponding to the first candidate cell when the cell fails for example, the reason value is "meets the execution condition of CHO but UE access or handover failed"
  • the first candidate cell satisfies the execution condition of CHO but UE access Or handover failure indication information
  • other candidate cells that is, some or all of the candidate cells in the at least one candidate cell except the first candidate cell
  • the UE may record one or more of the following information:
  • Time period 1 is the time period from when the UE receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from when a radio link failure occurs in the source cell until the UE determines the first cell
  • Time period 3 is the time period during which the UE determines that the first cell successfully accesses or is handed over to the first cell by the UE;
  • Time period 4 the time period 4 is the time period from when the UE successfully accesses or switches to the first cell until the UE reports the time period 4.
  • the successful access or handover may be the success of random access or the successful sending of the RRC reconfiguration complete message.
  • time period 3 may be a time period for the UE to determine a successful random access from the first cell to the UE and the first cell, or time period 3 may be a time period for the UE to determine the first cell to the first cell.
  • the time period during which the UE sends the RRC reconfiguration complete message; the time period 4 may be the time period from when the UE succeeds in random access to the first cell until the UE reports the time period 4, or the time period 4 may be the UE sending RRC
  • the reconfiguration complete message is reported by the UE to the time period of the time period 4.
  • time zone 1 and time zone 2 can form a new time zone
  • time zone 3 and time zone 4 can form a new time zone
  • time zone 2 and time zone 3 can form a new time zone
  • another example Time period 1 to time period 3 can also constitute a new time period, and the examples will not be given one by one.
  • time period 1 can be replaced with "the time period 1 means that the UE receives the RRC reconfiguration message and the UE determines Time period out of the first cell"
  • time period 3 can be replaced with "the time period 3 is the time period from the occurrence of a radio link failure in the source cell to the successful access of the UE or handover to the first cell” .
  • time period 1 to time period 4 may be: when RLF occurs in the source cell, record one or more of the following times Period: Time Period 1, Time Period 2, Time Period 3, and the time period obtained from any two or more consecutive time periods from Time Period 1 to Time Period 3.
  • the variable or cell can be newly defined or reuse existing ones, such as timeConnFailure or others, without limitation.
  • time period 4 for example, in scenario 1, when the UE successfully accesses/hands over to the first cell, for example, when the UE sends an RRC reconfiguration complete message to the first cell
  • record the foregoing time period 4 and/ Or record the time period constituted by time period 3 and time period 4, and/or record the time period obtained by combining the new time period constituted by time period X to time period 3 and time period 4, where X is from 1 to 2
  • Arbitrary values for example, can be recorded in another variable or cell, the variable or cell can be newly defined or reuse existing ones, such as timeSinceFailure or others, without limitation.
  • the UE may record one or more of the following information:
  • Time period 5 is the time period from when the UE receives the RRC reconfiguration message to when the UE receives the traditional handover message
  • Time period 6 the time period 6 is the time period from when the UE receives the traditional handover message to when the traditional handover fails,
  • Time period 7 is the time period from when the traditional handover fails until the UE determines the first cell
  • Time period 8 is the time period from the UE determining the first cell to the UE successfully accessing the first cell
  • Time period 9 the time period 9 is the time period from when the UE successfully accesses or switches to the first cell until the UE reports the time period 9.
  • Successful access or handover may be the success of random access or the success of sending the RRC reconfiguration complete message.
  • time period 8 may be a time period for the UE to determine a successful random access from the first cell to the UE and the first cell, or time period 8 may be a time period for the UE to determine the first cell to the first cell.
  • the time period for the UE to send the RRC reconfiguration complete message may be the time period from when the UE successfully random accesses to the first cell until the UE reports the time period 9, or the time period 9 may be the UE sending the RRC
  • the reconfiguration complete message is the time period from the time period 9 reported by the UE. or,
  • the time when the traditional handover fails and the time when the UE determines the first cell may be the same or different.
  • the time period 7 is "0" or the UE does not need to record the time period 7.
  • the time period 6 can be replaced with "the time period 6 is when the UE receives the traditional handover message and the UE determines the The time period of the first cell”
  • the time period 8 can be replaced with "the time period 8 is the time period from the failure of the traditional handover to the time the UE successfully accesses the first cell”.
  • time period 9 for example, in scenario 1, when the UE successfully accesses/hands over to the first cell, for example, when the UE sends an RRC reconfiguration complete message to the first cell
  • Arbitrary values for example, can be recorded in another variable or cell, the variable or cell can be newly defined or reuse existing ones, such as timeSinceFailure or others, without limitation.
  • the UE may record one or more of the following information:
  • Time period 10 is the time period from when the UE receives the RRC reconfiguration message until the UE determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 11 is the time period from when the UE determines that the first candidate cell meets the execution condition of the conditional handover to the UE and the first candidate cell fails to access;
  • Time period 12 is the time period from when the UE fails to access the first candidate cell until the UE determines the first cell
  • Time period 13 is a time period during which the UE determines that the first cell successfully accesses or is handed over to the first cell by the UE. Successful access or handover may be the success of random access or the success of sending the RRC reconfiguration complete message.
  • the time period 13 may be the time period for the UE to determine the successful random access from the first cell to the UE and the first cell, or the time period 13 may be the time period for the UE to determine the first cell to the first cell. The time period during which the UE sends the RRC reconfiguration complete message.
  • Time period 14 the time period 14 is a time period from when the UE successfully accesses or switches to the first cell until the UE reports the time period 14. Successful access or handover may be the success of random access or the success of sending the RRC reconfiguration complete message. That is, the time period 14 may be the time period from when the UE succeeds in random access to the first cell until the UE reports the time period 14, or the time period 14 may be the UE sending the RRC reconfiguration complete message to the UE reporting the time period. Period 14 time period. or,
  • a time period constituted by any two or more consecutive time periods from the time period 10 to the time period 14.
  • the time when the UE fails to access the first candidate cell may be the same or different from the time when the UE determines the first cell.
  • the time period 12 is "0" or the UE does not need to record the time period 12.
  • the time period 11 can be replaced with "the time period 11 is the time period when the UE determines that the execution condition of the conditional handover is satisfied
  • the time period 13 can be replaced with "the time period 13 is the time period from when the UE fails to access the first candidate cell until the UE successfully accesses or switches to The time period of the first cell”.
  • time period 10 to time period 14 or the time period obtained according to time period 10 to time period 14, in specific implementation, it may be: the UE and the candidate cell that meets the execution conditions of CHO (that is, the first When the access or handover of a candidate cell fails, record one or more of the following time periods: time period 10, time period 11, time period 12, time period 13, and according to any two of time period 10 to time period 13 Or a time period obtained from two or more consecutive time periods, for example, can be recorded in the same variable or cell, and the variable or cell can be newly defined or reuse existing ones, such as timeConnFailure or others, without limitation.
  • time period 14 for example, in scenario 1, when the UE successfully accesses/hands over to the first cell, for example, when the UE sends an RRC reconfiguration complete message to the first cell
  • record the aforementioned time period 14 and/ Or record the time period formed by the time period 13 and the time period 14, and/or record the time period obtained by combining the new time period formed by the time period X to the time period 13 and the time period 14, where X is 10 to 12
  • Arbitrary values for example, can be recorded in another variable or cell, the variable or cell can be newly defined or reuse existing ones, such as timeSinceFailure or others, without limitation.
  • the UE includes indication information in the RRC reconfiguration complete message sent to the first cell (or the network device to which the first cell belongs).
  • the indication information is used to indicate that the UE has recorded the information in 1) to 6) above. One or more.
  • Scenario 2 After the UE receives the RRC message containing the CHO configuration information, it determines a candidate cell (referred to as the first candidate cell) that meets the execution conditions of the CHO, and the access or handover between the UE and the first candidate cell is successful.
  • the UE After the UE receives the RRC message containing the CHO configuration information, it determines a candidate cell (referred to as the first candidate cell) that meets the execution conditions of the CHO, and the access or handover between the UE and the first candidate cell is successful.
  • This scenario corresponds to scenario 1.1 above.
  • the UE can record one or more of the following in the corresponding variable or cell:
  • Related information corresponding to the successful access or handover to the first candidate cell may include one or more of the following: identification information of the first candidate cell, index information corresponding to the first candidate cell, When the UE successfully accesses or switches to the first candidate cell, the signal quality and the success reason value corresponding to the first candidate cell (for example, the reason value is "this cell satisfies the execution conditions of CHO and the access or handover is successful"),
  • the first candidate cell satisfies the execution conditions of the CHO and indicates that the access or handover is successful, or, when the UE successfully accesses or is handed over to the first candidate cell (for example, when the RACH with the first candidate cell is successful, specifically, such as In the contention-based random access process, when the UE receives MSG4 (such as contention conflict resolution message); or, in the non-contention-based random access process, the UE receives MSG2 (such as random access response message).
  • MSG4 such as contention conflict resolution message
  • MSG2 such as random access response message
  • the signal quality corresponding to some or all of the candidate cells in the at least one candidate cell other than the first candidate cell can be replaced with "When the random access between the UE and the first candidate cell succeeds".
  • Related information corresponding to the source cell may include one or more of the following: cell identification information of the source cell, or signal quality corresponding to the source cell.
  • Time information include one or more of the following:
  • Time period 1 is the time period from the receipt of the RRC message containing the CHO configuration information to the determination of the first candidate cell that satisfies the execution conditions of the CHO,
  • Time period 2 is a time period in which it is determined that the first candidate cell that satisfies the execution condition of CHO is successfully accessed or handover between the UE and the first candidate cell.
  • Time period 3 is the time period from which the UE successfully accesses or switches the first candidate cell to the time period 3 is reported by the UE.
  • Successful access or handover may be the success of random access or the success of sending the RRC reconfiguration complete message.
  • time period 2 may be a time period for the UE to determine a successful random access from the first candidate cell to the UE and the first candidate cell, or time period 2 may be a time period for the UE to determine the first candidate cell.
  • the time period from the candidate cell to the UE sending the RRC reconfiguration complete message; the time period 3 may be the time period from when the UE succeeds in random access with the first candidate cell until the UE reports the time period 3, or the time period 3 may be The RRC reconfiguration complete message is sent to the UE to report the time period of the time period 3 for the UE. or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 3.
  • time period 1 to time period 3, or the time period obtained from time period 1 to time period 3, in specific implementation, may be: when RLF occurs in the source cell, record one or more of the following times Period: Time Period 1, Time Period 2, and the time period obtained from Time Period 1 to Time Period 2, for example, can be recorded in the same variable or cell, the variable or cell can be newly defined or reuse existing , Such as timeConnFailure or others, not limited.
  • a network device the first indication information described in the embodiment corresponding to FIG. 2 or the second indication information described in the embodiment corresponding to FIG.
  • the time period 3 needs to be reported (for example, in scenario 2, when the UE successfully accesses/hands over to the first candidate cell, for example, when the UE sends an RRC reconfiguration complete message to the first candidate cell), record the above time period 3.
  • the time period constituted by the recording time period 2 and the time period 3, and/or the time period constituted by the recording time period 1 to the time period 3, for example, can be recorded in another variable or cell, and the variable or cell can be It is newly defined or reused existing ones, such as timeSinceFailure or others, without limitation.
  • the UE includes indication information in the RRC reconfiguration complete message sent to the first candidate cell (or the network device to which the first candidate cell belongs), and the indication information is used to indicate that the UE has recorded the above 1)-4) One or more items in the message.
  • Scenario 3 When RLF occurs in the source cell of the UE, or the traditional handover fails, or the UE fails in access or handover with a candidate cell that meets the execution conditions of CHO (referred to as the first candidate cell), if the UE selects a cell after selecting a cell The cell of is a candidate cell, but the UE fails to access or handover with this cell (referred to as the first cell).
  • the UE initiates an RRC re-establishment procedure.
  • the re-establishment procedure may succeed or fail.
  • the UE enters an idle state, and the UE performs an RRC establishment procedure.
  • the UE when RLF occurs in the source cell of the UE, if the cell selected by the UE after cell selection is a candidate cell (the cell is the first cell), but the UE fails to access or handover with the first cell, corresponding to the situation 2.1 above .2.
  • the traditional handover fails, if the cell selected by the UE after cell selection is a candidate cell (the cell is the first cell), but the UE fails to access or handover to the first cell, corresponding to the situation 3.1.1.2 above.
  • the UE fails to access or handover with a candidate cell (called the first candidate cell) that meets the execution conditions of CHO, if the cell selected by the UE after cell selection is a candidate cell (the cell is the first cell), but The UE fails to access or handover to the first cell, which corresponds to the above scenario 1.2.1.2.
  • the UE can record one or more of the following in the corresponding variable or cell:
  • the relevant information corresponding to the UE and the selected first cell when the access or handover fails may include one or more of the following: identification information of the first cell, index information corresponding to the first cell, and The CHO configuration information corresponding to a cell, the signal quality corresponding to the first cell when the UE fails to access or handover to the first cell, and the failure reason value (the failure reason value may be newly defined, for example, the reason value is "The cell meets the cell selection criterion (or S criterion) but fails to access or handover", or reuse the existing cause value, such as "HOF", not limited), the cell meets the cell selection criterion (or S criterion) ) But the indication information of access or handover failure, or, when the UE fails to access or handover to the first cell, other candidate cells (that is, part or part of the candidate cells other than the first cell in the at least one candidate cell). All candidate cells) corresponding signal quality.
  • the UE can also record the corresponding related information when the traditional handover fails. You can refer to 3) of the above scenario 1, which will not be repeated.
  • the UE may also record related information corresponding to when the UE fails to access or handover to the first candidate cell. You can refer to 4) of the above scenario 1, and will not repeat it.
  • Corresponding relevant information when initiating the re-establishment procedure (because the UE initiates the re-establishment procedure when the access or handover between the UE and the determined first cell fails).
  • it may include one or more of the following: the cell identification information of the re-established cell, the signal quality corresponding to the re-established cell when the re-establishment process is performed, and the re-establishment reason value (the reason value may be newly defined, for example, The reason value is "establishment and the access or handover failure of the CHO candidate cell that satisfies the cell selection criterion (or satisfies the S criterion)", or reuses the existing reason value, such as "HOF", which is not limited), or, the UE and Information indicating that the first cell that meets the cell selection criterion (or satisfies the S criterion) fails to access or handover.
  • an RRC message such as an RRC reconfiguration message or an RRC connection reconfiguration message
  • the UE may record one or more of the following information:
  • Time period 1 is the time period from when the UE receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from the occurrence of a radio link failure in the source cell until the UE determines the first cell
  • Time period 3 is a time period during which the UE determines that the UE fails to access or handover to the first cell from the first cell;
  • Time period 4 is the time period from when the UE fails to access or handover to the first cell until the UE determines to re-establish the cell;
  • Time period 5 is the time period from when the UE determines to re-establish the cell until the UE reports the time period 5, or,
  • a time period composed of any two or more consecutive time periods from the time period 1 to the time period 5, for example, time period 1 and time period 2 can form a new time period, for example, time period 1 to Time period 3 can also constitute a new time period, and no more examples are given.
  • the time when the radio link failure occurs in the source cell and the time when the UE determines the first cell may be the same or different.
  • the time period 2 is "0".
  • the UE does not need to record the time period 2.
  • the time period 1 can be replaced with "the time period 1 means that the UE receives the RRC reconfiguration message and the UE determines The time period of the first cell”
  • the time period 3 may be replaced with "the time period 3 is the time period from the occurrence of a radio link failure in the source cell to the failure of UE access or handover to the first cell”.
  • the time when the UE fails to access or handover to the first cell may be the same or different from the time when the UE determines to re-establish the cell.
  • the time period 4 is "0" or the UE does not need to record the time period 4.
  • the time period 3 can be replaced with "the time period 3 is for the UE to determine the first cell to the UE to determine the re-establishment
  • the time period of the cell the time period 5 can be replaced with "the time period 5 is the time period from when the UE fails to access or handover to the first cell until the UE reports the time period 5".
  • time period 1 to time period 5, or the time period obtained according to time period 1 to time period 5, in specific implementation, may be: when RLF occurs in the source cell, record one or more of the following times Period: Time Period 1, Time Period 2, Time Period 3, Time Period 4, and time periods obtained from any two or more consecutive time periods from Time Period 1 to Time Period 4, for example, it can be recorded in the same
  • the variables or information elements can be newly defined or reused existing ones, such as timeConnFailure or others, without limitation.
  • time period 5 for example, in scenario 3, when the UE is successfully re-established or the RRC establishment is successful, for example, when the UE sends an RRC re-establishment complete message to the re-established cell or the UE sends an RRC establishment to the cell in the RRC establishment process
  • the obtained time period where X is any value from 1 to 3, for example, it can be recorded in another variable or cell, which can be newly defined or reuse existing ones, such as timeSinceFailure or others, Not limited.
  • the UE may record one or more of the following information:
  • Time period 6 the time period 6 is the time period from when the UE receives the RRC reconfiguration message to when the UE receives the traditional handover message
  • Time period 7 is the time period from when the UE receives the traditional handover message to when the traditional handover fails
  • Time period 8 the time period 8 is the time period from when the traditional handover fails until the UE determines the first cell
  • Time period 9 is a time period during which the UE determines that the UE fails to access or handover to the first cell from the first cell;
  • Time period 10 is the time period from when the UE fails to access or handover to the first cell until the UE determines to re-establish the cell;
  • Time period 11 is a time period from when the UE determines to re-establish a cell until the UE reports the time period 11. or,
  • a time period constituted by any two or more consecutive time periods from the time period 6 to the time period 11.
  • the time when the traditional handover fails and the time when the UE determines the first cell may be the same or different.
  • the time period 8 is "0" or the UE does not need to record the time period 8.
  • the time period 7 can be replaced with "the time period 7 is when the UE receives the traditional handover message and the UE determines the The time period of the first cell”
  • the time period 9 may be replaced with "the time period 9 is the time period from the failure of traditional handover to the failure of UE access or handover to the first cell”.
  • the time when the UE fails to access or handover to the first cell may be the same or different from the time when the UE determines to re-establish the cell.
  • the time period 10 is "0" or the UE does not need to record the time period 10.
  • the time period 9 can be replaced with "the time period 9 is for the UE to determine the first cell to the UE to determine The time period for re-establishing the cell", the time period 10 can be replaced with "the time period 10 is the time period from when the UE fails to access or handover to the first cell until the UE reports the time period 10".
  • time period 6 to time period 11, or the time period obtained from time period 6 to time period 11, in specific implementation, may be: when a traditional handover failure occurs, record one or more of the following times Period: Time Period 6, Time Period 7, Time Period 8, Time Period 9, Time Period 10, and the time period obtained from any two or more consecutive time periods from Time Period 6 to Time Period 10, for example, you can Recorded in the same variable or cell, the variable or cell can be newly defined or reuse existing ones, such as timeConnFailure or others, without limitation.
  • the variable or cell can be newly defined or reuse existing ones, such as timeConnFailure or others, without limitation.
  • the reporting period is 11 o'clock (for example, in scenario 3, when the UE is successfully re-established or the RRC establishment is successful, for example, the UE sends an RRC re-establishment complete message to the re-established cell or the UE sends an RRC establishment to the cell in the RRC establishment process
  • the UE may record one or more of the following information:
  • Time period 12 is the time period from when the UE receives the RRC reconfiguration message until the UE determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 13 the time period 13 is the time period from which the UE determines that the first candidate cell meets the execution condition of the conditional handover to the UE and the first candidate cell fails to access or handover;
  • Time period 14 is the time period from when the UE fails to access or handover to the first candidate cell until the UE determines the first cell
  • Time period 15 is a time period during which the UE determines that the first cell fails to access or handover the first cell to the UE;
  • Time period 16 is the time period from when the UE fails to access or handover to the first cell until the UE determines to re-establish the cell;
  • Time period 17 is the time period from when the UE determines to re-establish a cell until the UE reports the time period 17, or,
  • a time period constituted by any two or more consecutive time periods from the time period 12 to the time period 17.
  • the time when the UE fails to access the first candidate cell may be the same or different from the time when the UE determines the first cell.
  • the time period 14 is "0" or the UE does not need to record the time period 14.
  • the time period 13 can be replaced with "the time period 13 is the time period when the UE determines that the execution condition of the conditional handover is satisfied.
  • the time period from the first candidate cell to the UE determining the first cell” the time period 15 can be replaced with "the time period 15 is when the UE fails to access the first candidate cell until the UE accesses the first cell. The time period during which the cell failed”.
  • the time when the UE fails to access or handover to the first cell may be the same or different from the time when the UE determines to re-establish the cell.
  • the time period 16 is "0" or the UE does not need to record the time period 16.
  • the time period 15 can be replaced with "the time period 15 is for the UE to determine the first cell to the UE to determine The time period for re-establishing a cell”
  • the time period 17 can be replaced with "the time period 17 is the time period from when the UE fails to access or handover to the first cell until the UE reports the time period 17".
  • time period 12 to time period 17, or the time period obtained according to time period 12 to time period 17, in a specific implementation, it can be: the UE and the candidate cell that meets the execution conditions of CHO (that is, the first When the access or handover of a candidate cell fails, record one or more of the following time periods: time period 12, time period 13, time period 14, time period 15, time period 16, and according to time period 12 to time period 16.
  • the time period obtained from any two or more consecutive time periods in the, for example, can be recorded in the same variable or cell, the variable or cell can be newly defined or reuse existing ones, such as timeConnFailure or others, Not limited.
  • a network device Upon receiving a request for reporting recorded information sent by a network device (the first indication information described in the embodiment corresponding to FIG. 2 or the second indication information described in the embodiment corresponding to FIG. 2), or, in the UE Need to report time period 17 o'clock (for example, in scenario 3, when the UE is successfully re-established or the RRC establishment is successful, for example, the UE sends the RRC re-establishment complete message to the re-established cell or the UE sends the RRC establishment to the cell in the RRC establishment When the message is completed), record the above-mentioned time period 17, and/or record the time period formed by the time period 16 and the time period 17, and/or record the combination of the new time period formed by the time period X to the time period 16 and the time period 17
  • the obtained time period where X is any value from 12 to 15, for example, it can be recorded in another variable or cell, which can be newly defined or reuse existing ones, such as timeSinceFailure or others, Not limited
  • the UE includes indication information in the RRC re-establishment complete message sent to the re-established cell (or the network device to which the re-established cell belongs), and the indication information is used to indicate that the UE has recorded the above 1 ) To 7) one or more of the information; if the re-establishment fails, the UE includes indication information in the RRC establishment complete message sent to the cell (or the network device to which the cell belongs) in the RRC establishment process. Information is used to indicate that the UE has recorded one or more of the above 1) to 7) information.
  • Scenario 4 When RLF occurs in the source cell of the UE, or the traditional handover fails, or the UE fails in access or handover with a candidate cell that meets the execution conditions of CHO (referred to as the first candidate cell), if the UE selects a cell after performing cell selection If the cell of is not a candidate cell, the UE performs an RRC re-establishment procedure. Specifically, the UE may succeed in re-establishment or fail in re-establishment. If the re-establishment fails, the UE enters an idle state, and the UE performs the RRC establishment procedure.
  • the UE fails to access or handover with the candidate cell (called the first candidate cell) that meets the execution conditions of CHO, if the cell selected by the UE after cell selection (for example, the cell is the second cell) does not belong to the candidate cell , Corresponding to the above situation 1.2.2.
  • the UE can record one or more of the following in the corresponding variable or cell:
  • the relevant information when the UE initiates the re-establishment process may include one or more of the following: cell identification information of the re-established cell (ie, the cell selected by the UE after cell selection), and execute the re-establishment process
  • cell identification information of the re-established cell ie, the cell selected by the UE after cell selection
  • execute the re-establishment process When re-establishing the cell’s corresponding signal quality and re-establishment reason value (the reason value can be newly defined, for example, the reason value is "the cell selected by the UE after cell selection meets the cell selection criterion (or satisfies the S criterion)).
  • the UE When the measurement report reports the signal quality corresponding to some or all of the candidate cells in the at least one candidate cell, and the UE receives an RRC message (such as an RRC reconfiguration message or an RRC connection reconfiguration message) containing conditional handover configuration information
  • an RRC message such as an RRC reconfiguration message or an RRC connection reconfiguration message
  • the UE may record one or more of the following information:
  • Time period 1 is the time period from when the UE receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from the occurrence of a radio link failure in the source cell until the UE determines the second cell, where "the UE determines the second cell" can be replaced with "the UE re-establishes", That is, the time period 2 may be the time period from the occurrence of a radio link failure in the source cell to the re-establishment of the UE.
  • Time period 3 is the time period from when the UE determines the second cell to the UE reporting the time period 3, where "the UE determines the second cell” can be replaced with "the UE performs re-establishment", that is,
  • the time period 3 may be the time period from when the UE re-establishes to the UE reporting the time period 3. or,
  • the time period 1 and the time period 2 can form a new time period, for example, the time period 1 to Time period 3 can also constitute a new time period, and no more examples are given.
  • the time when the radio link failure occurs in the source cell and the time when the UE determines the second cell may be the same or different.
  • the time period 2 is "0" or the UE does not need to record the time period 2.
  • the time period 1 can be replaced with "the time period 1 means that the UE receives the RRC reconfiguration message and the UE determines The time period of the second cell”
  • the time period 3 can be replaced with "the time period 3 is the time period from the occurrence of the radio link failure in the source cell to the time period 3 reported by the UE".
  • time period 1 to time period 3, or the time period obtained from time period 1 to time period 3, in specific implementation, may be: when RLF occurs in the source cell, record one or more of the following times Period: Time Period 1, Time Period 2, and the time period obtained from Time Period 1 and Time Period 2, for example, can be recorded in the same variable or cell, which can be newly defined or reuse existing , Such as timeConnFailure or others, not limited.
  • a network device Upon receiving a request for reporting recorded information sent by a network device (the first indication information described in the embodiment corresponding to FIG. 2 or the second indication information described in the embodiment corresponding to FIG.
  • Time period 3 needs to be reported (for example, in scenario 4, when the UE is successfully re-established or the RRC is successfully established, for example, when the UE sends an RRC re-establishment complete message to the re-established cell or the UE sends an RRC establishment to the cell in the RRC establishment process
  • the UE may record one or more of the following information:
  • Time period 4 is the time period from when the UE receives the RRC reconfiguration message to when the UE receives the traditional handover message
  • Time period 5 the time period 6 is the time period from when the UE receives the traditional handover message to when the traditional handover fails
  • Time period 6 the time period 6 is the time period from the failure of the traditional handover until the UE determines the second cell, where "the UE determines the second cell” can be replaced with "the UE performs re-establishment", that is, the time period 7 can be the time period from the failure of the traditional handover to the re-establishment of the UE.
  • Time period 7 is the time period from when the UE determines the second cell to the UE reporting the time period 7, where "the UE determines the second cell" can be replaced with "the UE performs re-establishment", that is,
  • the time period 7 may be the time period from when the UE re-establishes to the time period 7 reported by the UE. or,
  • the time when the traditional handover fails and the time when the UE determines the second cell may be the same or different.
  • the time period 6 is "0" or the UE does not need to record the time period 6.
  • the time period 5 can be replaced with "the time period 5 is when the UE receives the traditional handover message and the UE determines the The time period of the second cell”
  • the time period 7 can be replaced with "the time period 7 is the time period from the time when the traditional handover fails to the time period 7 reported by the UE".
  • a network device the first indication information described in the embodiment corresponding to FIG. 2 or the second indication information described in the embodiment corresponding to FIG.
  • time period 7 for example, in scenario 4, when the UE is successfully re-established or the RRC establishment is successful, for example, when the UE sends an RRC re-establishment complete message to the re-established cell or the UE sends an RRC establishment to the cell in the RRC establishment process
  • the obtained time period where X is any value from 4 to 5, for example, it can be recorded in another variable or cell, which can be newly defined or reuse existing ones, such as timeSinceFailure or others, Not limited.
  • the UE may record one or more of the following information:
  • Time period 8 is the time period from when the UE receives the RRC reconfiguration message until the UE determines the first candidate cell that satisfies the execution condition of the conditional handover;
  • Time period 9 is a time period from when the UE determines that the first candidate cell meets the execution condition of the conditional handover to the UE and the first candidate cell handover or access failure;
  • Time period 10 is the time period from the UE handover or access failure to the first candidate cell until the UE determines the second cell, where "the UE determines the second cell” can be replaced with "the UE performs "Re-establishment", that is, the time period 12 may be the time period from when the UE switches to the first candidate cell or access fails until the UE performs re-establishment.
  • Time period 11 is the time period from when the UE determines the second cell to the UE reporting the time period 11, where "the UE determines the second cell" can be replaced with "the UE performs re-establishment", that is,
  • the time period 11 may be a time period from when the UE re-establishes to the UE reporting the time period 11. or,
  • a time period constituted by any two or more consecutive time periods from the time period 8 to the time period 11.
  • the time when the UE fails to switch or access the first candidate cell may be the same or different from the time when the UE determines the second cell.
  • the time period 10 is "0" or the UE does not need to record the time period 10.
  • the time period 9 can be replaced with "the time period 9 is the time period when the UE determines that the execution condition of the conditional handover is satisfied
  • the time period from the first candidate cell to the UE determining the second cell” the time period 11 can be replaced with "the time period 11 is the time when the UE reports the time when the UE and the first candidate cell switch or access fails.
  • the time period of segment 11. is the time period of segment 11.
  • time period 8 to time period 11, or the time period obtained according to time period 8 to time period 11, in specific implementation, may be: the UE and the candidate cell that meets the execution conditions of CHO (that is, the first When the access or handover of a candidate cell fails, record one or more of the following time periods: time period 8, time period 9, time period 10, and according to any two or more of time period 8 to time period 10
  • the time period obtained from the continuous time period can be recorded in the same variable or cell, for example, the variable or cell can be newly defined or reuse existing ones, such as timeConnFailure or others, without limitation.
  • the reporting period is 11 o'clock (for example, in scenario 4, when the UE is successfully re-established or the RRC establishment is successful, for example, when the UE sends an RRC re-establishment complete message to the re-established cell or the UE sends an RRC establishment to the cell in the RRC establishment process
  • the obtained time period where X is any value from 8 to 9, for example, it can be recorded in another variable or cell, which can be newly defined or reuse existing ones, such as timeSinceFailure or others, Not limited.
  • the UE includes indication information in the RRC re-establishment complete message sent to the re-established cell (or the network device to which the re-established cell belongs).
  • the indication information is used to indicate that the UE has recorded the above 1 )-6)
  • the above solution provides relevant information that the UE can record in different scenarios of the CHO mechanism for subsequent reporting of relevant information, so that network equipment can adjust parameters according to the relevant information reported by the UE, thereby improving system reliability and robustness Sex.
  • this application provides a communication method that can be used to implement a UE's request based on a network device to report relevant information in the CHO process to the network device.
  • This method can be executed by terminal devices or components (such as chips, circuits, etc.) on the terminal device side; on the network side, it can be executed by network devices or components (such as chips, circuits, etc.) used for network devices .
  • the terminal device and the network device execute the method as an example for description, and the terminal device is described by using the UE as an example.
  • the method includes the following steps:
  • Step 201 The first network device sends first indication information to the UE.
  • the UE can receive the first indication information.
  • the first indication information is used to request the UE to report the first information.
  • the first indication information may be a UEInformation Requset message.
  • the first indication information may include third information and/or fourth information.
  • the third information is used to indicate the UE to report related information when the access/handover fails, and the fourth information is used to instruct the UE to report the connection failure. Relevant information when the entry/switching is successful.
  • the first network device may be a network device to which the first cell belongs.
  • the first network device may be the network device to which the first candidate cell belongs.
  • the first network device may be the network device to which the re-established cell belongs, and if the re-establishment fails, the first network device may be the network device to which the cell in the RRC establishment process belongs.
  • the first network device may be the network device to which the re-established cell belongs, and if the re-establishment fails, the first network device may be the network device to which the cell in the RRC establishment process belongs.
  • Step 202 The UE reports the first information to the first network device.
  • the first information recorded and reported by the UE is part or all of the information described in the foregoing scenario 1.
  • the first information recorded and reported by the UE is part or all of the information described in the second scenario.
  • the first information recorded and reported by the UE is part or all of the information described in the third scenario.
  • the first information recorded and reported by the UE is part or all of the information described in the foregoing scenario 4.
  • the UE when the UE reports the first information, it may be reported through one RRC message (for example, the message is UE granular), or it may be reported in multiple RRC messages (for example, the message is cell granular).
  • the RRC message may adopt a newly defined RRC message, or reuse an existing RRC message (for example, UEInformationResponse), which is not limited.
  • the UE may also report fifth information and/or sixth information.
  • the fifth information is used to indicate that the UE reports related information when the access/handover fails
  • the sixth information is used to indicate that the UE reports Related information when access/handover is successful.
  • the first information in addition to the above-mentioned reporting of the first information according to the request of the first network device, it can also be reported periodically (the length of the reporting period can be agreed upon by agreement or indicated by the network.
  • the RRC message containing the CHO configuration information can be Including the reporting period length), or reporting based on events, for example, the first information is reported when the UE successfully accesses or is handed over to the first cell, or the first information is reported when the UE successfully accesses or is handed over to the first candidate cell The information is reported, or the first information is reported when the UE performs re-establishment, or the first information is reported when the UE performs RRC establishment.
  • the UE can report the recorded related information in the CHO process to the first network device, so that the network device can adjust the switching parameters (such as traditional switching configuration information or CHO configuration information) according to the obtained related information, thereby improving the system Reliability and robustness.
  • the switching parameters such as traditional switching configuration information or CHO configuration information
  • step 203 may also be included.
  • Step 203 The first network device sends part or all of the first information to the third network device.
  • the network equipment to which the source cell belongs is referred to as the source network equipment
  • the network equipment to which the candidate cell belongs is referred to as the candidate network equipment
  • the network equipment to which the re-established cell belongs is referred to as the re-established network equipment
  • the target cell here refers to the traditional The network device to which the target cell in the handover belongs.
  • the source network device, the target network device, the candidate network device, and the re-established network device are different from each other as an example for description.
  • the third network device may include at least one network device. When the third network device includes multiple network devices, the information sent by the first network device to the multiple network devices may be the same or different, which is not done in this embodiment. limited.
  • the first network device may be a network device to which the first cell belongs, and the third network device may be a source network device and/or a target network device and/or a candidate network device.
  • the third network device in the case of RLF in the source cell, the third network device may be the source network device; in the case of traditional failure, the third network device may be the target network device and/or the source network device,
  • the third network device when the third network device is the source network device, the third network device (that is, the source network device) may also send part or all of the information received from the first network device to the target network device;
  • the third network device may be the source network device and/or the candidate network device (for example, the candidate network device may be the first candidate cell).
  • a network device to which a candidate cell belongs as an example, when the third network device is the source network device, the third network device (that is, the source network device) may
  • the first network device may be the network device to which the first candidate cell belongs
  • the third network device may be the source network device and/or the network device to which other candidate cells other than the first candidate cell belong.
  • the third network device when the third network device is the source network device, the third network device (that is, the source network device) may also send part or all of the information received from the first network device to Network equipment to which candidate cells other than the first candidate cell belong.
  • the first network device may be the network device to which the re-established cell belongs
  • the third network device may be the source network device and/or the target network device and/or the candidate network device (the candidate The network equipment includes the network equipment to which the first cell belongs and/or the network equipment to which other candidate cells except the first cell belong).
  • the third network device when RLF occurs in the source cell, may be the source network device and/or the candidate network device (the candidate network device includes the network device to which the first cell belongs and/or Network equipment to which candidate cells other than the first cell belong), as an example, when the third network equipment is the source network equipment, the third network equipment (that is, the source network equipment) may also receive data from the first network equipment Part or all of the information in is sent to the candidate network equipment (the candidate network equipment includes the network equipment to which the first cell belongs and/or the network equipment to which other candidate cells other than the first cell belong); in the case of a traditional failure ,
  • the third network device may be the target network device and/or the source network device and/or the candidate network device (the candidate network device includes the network device to which the first cell belongs and/or the network to which other candidate cells other than the first cell belong Device), an example, when the third network device is the source network device, the third network device (that is, the source network device) may also send part or all of
  • the network equipment to which other candidate cells belong may also receive information from the first network equipment Part or all of it is sent to the candidate network device (for example, the candidate network device may be the network device to which the first candidate cell belongs and/or the network device to which the first cell belongs and/or other than the first cell and the first candidate cell The network equipment to which the candidate cell belongs).
  • the first network device may be the network device to which the cell in the RRC establishment process belongs
  • the third network device may be the source network device and/or the target network device and/or the candidate network device (The candidate network equipment includes the network equipment to which the first cell belongs and/or the network equipment to which other candidate cells except the first cell belong) and/or the re-established network equipment.
  • the third network device when RLF occurs in the source cell, may be the source network device and/or the candidate network device (the candidate network device includes the network device to which the first cell belongs and/or the other Other candidate cells outside the first cell belong to the network equipment) and/or re-establish the network equipment.
  • the third network equipment when the third network equipment is the source network equipment, the third network equipment (that is, the source network equipment) may also Part or all of the information received by the first network device is sent to the candidate network device (the candidate network device includes the network device to which the first cell belongs and/or the network device to which other candidate cells other than the first cell belong), and /Or, the third network device (ie, the source network device) may also send part or all of the information received from the first network device to the re-establishment network device; in the case of a traditional failure, the third network device may It is the target network device and/or the source network device and/or the candidate network device (the candidate network device includes the network device to which the first cell belongs and/or the network device to which other candidate cells other than the first cell belong) and/or the re Establish a network device, an example, when the third network device is the source network device, the third network device (that is, the source network device) may also send part or all of the information received from the first network device to the target network Device,
  • the first network device and/or the third network device can adjust parameters (such as traditional handover parameter configuration information or CHO parameter configuration information) according to the received related information, thereby improving system reliability and robustness.
  • parameters such as traditional handover parameter configuration information or CHO parameter configuration information
  • the CHO configuration information corresponding to at least one candidate cell may be adjusted, or a certain cell may not be configured as a candidate cell in the subsequent CHO process, or a certain cell may not be configured as a target cell in the subsequent traditional handover process.
  • the UE may also receive second indication information from a second network device, where the second indication information is used to instruct the UE to record part or all of the first information.
  • the second network device may be the source network device.
  • the second indication information may include multiple indication information.
  • the second indication information may include indication information for instructing the UE to record related information when the access/handover fails, and/or for indicating The UE records the indication information of related information when the access/handover is successful.
  • the UE may also send third indication information to the first network device.
  • the third indication information is used to indicate that the UE has Complete the recording of part or all of the first information.
  • the third indication information may include multiple indication information.
  • the third indication information may include indication information used to indicate that the UE has completed the recording of related information when the access/handover fails, and/or, The indication information used to indicate that the UE has completed the recording of related information when the access/handover is successful.
  • the third indication information may be included in the RRC establishment complete message or the RRC recovery complete message or the RRC re-establishment complete message or the RRC reconfiguration complete message or other messages, which is not limited.
  • the UE may also send the third indication information to the second network device.
  • the first network device may also include: the first network device from another network device (the other network device may be a source network device, a target network device, a candidate network device, a re-established network device, RRC establishment One of the network devices to which the cell in the process belongs, and is different from the first network device) receives the above-mentioned first indication information. For example, if the first network device is the network device to which the first candidate cell belongs, and the other network device is the source network device, then the source network device may carry the above-mentioned first network device in the handover request message sent to the network device to which the first candidate cell belongs.
  • the network device to which the first candidate cell belongs carries the first indication information in the handover request confirmation message sent to the source network device, and the source network device is in the RRC reconfiguration message that contains the CHO configuration information sent to the UE Carrying the foregoing first indication information
  • the first indication information may be a binary value or a Boolean value or a certain cell, which is not limited in this embodiment.
  • the RRC reconfiguration message (the RRC reconfiguration message may be an RRC message containing CHO configuration information, or an RRC message used for traditional handover) (Ie, handover message)) contains the above-mentioned second indication information.
  • the UE may be connected to the network device to which the successfully accessed cell belongs (that is, the first network device, for example, in scenario 1, the first network device is the network device to which the first cell belongs; in scenario 2, the first network device That is, the RRC reconfiguration complete message sent by the network device to which the first candidate cell belongs includes the recorded related information in the corresponding scenario (that is, part or all of the first information in the above scenario 1 or scenario 2).
  • the RRC reconfiguration complete message may also include third indication information.
  • the RRC reconfiguration message may be used (the RRC reconfiguration message may be an RRC message containing CHO configuration information, or an RRC message used for traditional handover. (Ie, handover message)) contains the above-mentioned second indication information.
  • the first network device may be the network device to which the re-established cell belongs, and the UE may include the recorded corresponding scenario in the RRC re-establishment complete message sent to the network device to which the re-established cell belongs Related information in (that is, part or all of the first information in scene three or scene four above).
  • the RRC re-establishment complete message may also include third indication information; if the re-establishment fails, the first network device may be the network device to which the cell in the RRC establishment process belongs, and the UE may be in the cell in the RRC establishment process.
  • the RRC establishment complete message sent by the network device to which it belongs includes the recorded related information in the corresponding scene (that is, part or all of the first information in the aforementioned scene 3 or scene 4).
  • the RRC establishment complete message may also include third indication information.
  • the UE can record and report relevant information generated in the conditional switching process, which has the following beneficial effects:
  • record/report which includes the following meanings: record, or, report, or, record and report.
  • record/report which includes the following meanings: record, or, report, or, record and report.
  • the network device (such as the candidate network device, or the target network device, or the source network device) can learn the first cell based on the received information
  • the signal quality of a cell is good, and the first cell is a cell that satisfies the cell selection criterion (or satisfies the S criterion) and the UE can successfully access or handover.
  • the first network device may subsequently send part or all of the related information reported by the UE to the source network device according to the identification information of the source cell.
  • a network device (such as a candidate network device, a target network device, or a source network device) knows that the first cell is a cell that satisfies the cell selection criterion (or satisfies the S criterion) and the UE can successfully access or handover.
  • the network device (such as the candidate network device, or the target network device, or the source network device) ) It can be known that RLF occurs in the source cell in the CHO process.
  • the first network device or the source network device may subsequently send part or all of the relevant information reported by the UE to the target network device.
  • the failure reason value for example, the reason value is "HOF” or "T304 timeout”
  • the indication information of the traditional handover failure or T304 timeout
  • the network equipment such as the candidate network equipment or the target
  • the network device (or source network device) can know that the traditional handover procedure is triggered in the CHO procedure, but the traditional handover fails.
  • the first network device If recording/reporting the relevant information corresponding to the failure of the access or handover between the UE and the first candidate cell, the first network device will use the identification information of the first candidate cell, the index information corresponding to the first candidate cell, and the first candidate cell. Corresponding CHO configuration information, the signal quality corresponding to the first candidate cell when the UE fails to access or handover to the first candidate cell, knowing that the quality of the first candidate cell is poor, and the subsequent first network device or source network device can send the UE Part or all of the reported related information is sent to the candidate network device.
  • the failure reason value for example, the reason value is "meeting the execution condition of CHO but UE access or handover failed"
  • the first candidate cell satisfies the execution condition of CHO but the indication information of UE access or handover failure
  • Success reason value for example, the reason value is "the first cell satisfies the cell selection criterion (or satisfies the S criterion) and the access or handover is successful”
  • the first cell satisfies the cell selection criterion (or satisfies the S criterion) and the access or handover
  • the successful indication information, the network device (such as the candidate network device or the source network device) can learn that the UE failed to hand over to the first candidate cell in the CHO procedure.
  • the first network device can consider that the UE's failure to handover to the first candidate cell is an error handover (Or, it can be understood that the candidate cell configured in the CHO process is inappropriate, for example, the CHO configuration information of the candidate cell (such as the execution condition information of CHO) is not appropriate, or a cell should not be configured as a candidate in the CHO process District).
  • the network equipment (such as the candidate network equipment, the target network equipment, or the source network equipment) can learn which cells at each time. The signal quality is good, and which cells have poor signal quality.
  • the network device (such as the candidate network device, or the target network device, or the source network device) can adjust the relevant parameters at an appropriate time based on the time information.
  • the network device (such as the candidate network device, or the target network device, or the source network device) will know according to the received information The signal quality of the first candidate cell is good, and the CHO process is successful.
  • the network device (such as the candidate network device, or the target network device, or the source network device) according to the identification information of the first cell , The index information corresponding to the first cell, the CHO configuration information corresponding to the first cell, the signal quality corresponding to the first cell when the UE fails to access or handover to the first cell, it can be learned that the signal quality of the first cell is not ideal .
  • the failure reason value for example, the reason value is "the cell meets the cell selection criterion (or satisfies the S criterion) but the access or handover failed", or reuses the existing reason value, such as "HOF", which is not limited
  • the The cell satisfies the cell selection criteria (or satisfies the S criterion) but the access or handover failed indication information
  • the failure reason value for example, the reason value is "meet the execution conditions of CHO but the UE access or handover failed"
  • the network device such as the candidate network device, the target network device, or the source network device
  • the network device can learn that the CHO process has failed (or, it can be understood that the UE failed in the CHO process) Can be successfully handed over to the first candidate cell, the first cell).
  • the network device (such as the candidate network device, the target network device, or the source network device) can It is considered that the UE’s unsuccessful handover to the first candidate cell is an erroneous handover (or, it can be understood that the candidate cell configured in the CHO process is not suitable, for example, the CHO configuration information of the candidate cell (such as the execution condition information of CHO) is not suitable, or , A certain cell should not be configured as a candidate cell in the CHO process).
  • the network equipment (such as candidate network equipment, or target network equipment, or source network equipment, or re-established network equipment) will be selected according to the re-establishment cause value, UE and satisfying cell selection
  • the first cell access or handover failure indication information that meets the criteria (or meets the S criteria)
  • the network device (such as the candidate network device, or the target network device, or the source network device, or the re-establishment network device) can know that the CHO process has failed ( Alternatively, it can be understood that the UE failed to successfully switch to the first candidate cell or the first cell in the CHO process, or the network equipment can consider that scenario 3 is an error handover or premature handover (or, it can be understood as the CHO process
  • the configured candidate cell is not suitable, for example, the CHO configuration information of the candidate cell (such as CHO execution condition information) is not suitable, or a certain cell should not be configured as a candidate cell in the CHO process).
  • the network equipment can consider scenario 3 as a premature handover; if the cell where the UE is re-establishing is other than the source cell In other cells, the first network device can consider that scenario 3 is an error handover (or, it can be understood that the candidate cell configured in the CHO process is inappropriate, for example, the CHO configuration information of the candidate cell (such as the execution condition information of CHO). ) Is inappropriate, or a certain cell should not be configured as a candidate cell in the CHO process).
  • the network equipment such as the candidate network equipment, or the target network equipment, or the source network equipment, or the re-establishment network equipment
  • the network equipment (such as the candidate network equipment, or the target network equipment, or the source network equipment, or the re-establishment network equipment) according to the re-establishment cause value, after the UE performs the cell selection
  • the selected cell satisfies the cell selection criterion (or satisfies the S criterion) but does not belong to the indication information of at least one candidate cell, it can be learned that the CHO process has failed (or, it can be understood that the UE failed to switch to the first candidate cell in the CHO process) ), or a network device (such as a candidate network device, or a target network device, or a source network device, or a re-established network device) can be considered as a wrong handover or premature handover (or, it can be understood as a CHO process
  • the configured candidate cell is not suitable, for example, the
  • the network device (such as the candidate network device, the target network device, or the source network device, or Re-establishing the network equipment) can be considered as premature handover if the UE fails to handover to the first candidate cell; if the cell selection is performed to select a cell other than the source cell and the candidate cell, the network equipment (such as the candidate network equipment) , Or the target network device, or the source network device, or the re-established network device) can be considered that the UE's failure to handover to the first candidate cell is an erroneous handover (or it can be understood that the candidate cell configured in the CHO process is inappropriate, for example, The CHO configuration information of the candidate cell (such as CHO execution condition information) is inappropriate, or a certain cell should not be configured as a candidate cell in the CHO process).
  • each network element described above includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
  • the steps or operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be configured in the terminal device.
  • the steps or operations implemented by the network device can also be implemented by a network device. It can be implemented by a component (such as a chip or a circuit) that can be configured in a network device.
  • a device for implementing any of the above methods.
  • a device is provided that includes units (or means) for implementing each step performed by the terminal device in any of the above methods.
  • another device is also provided, including a unit (or means) for implementing each step executed by the network device in any of the above methods.
  • FIG. 3 is a schematic diagram of a communication device provided by an embodiment of this application.
  • the device is used to implement the steps performed by the corresponding terminal device in the above method embodiment.
  • the device 300 includes a sending unit 310 and a receiving unit 320.
  • the device may be a terminal device, or may be configured in a component (such as a chip or a circuit) of the terminal device.
  • the device may include one or more of the following possible implementation manners.
  • the receiving unit 320 is configured to receive first indication information from the first network device, where the first indication information is used to request the terminal device to report the first information; the sending unit 310 is configured to report the first information to the first network device A message; wherein, if a radio link failure occurs in the source cell of the terminal device, or a traditional handover fails, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, the terminal device performs When the first cell selected after cell selection belongs to at least one candidate cell, and the terminal device successfully accesses the first cell, the first information includes one or more of the following: said The identification information of the first cell, the index information corresponding to the first cell, the signal quality corresponding to the first cell when the terminal device successfully accesses the first cell, the success reason value, or, the first Information indicating that the cell satisfies the cell selection criterion and is successfully accessed; wherein, the first cell belongs to the first network device, the at least one candidate cell is indicated by an RRC reconfiguration message from
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, so
  • the first information further includes one of the following or Multiple:
  • the terminal device determines the first cell, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device When the terminal device successfully accesses the first cell, the signal quality corresponding to some or all of the candidate cells other than the first cell in the at least one candidate cell.
  • the first information further includes one or more of the following:
  • the signal quality corresponding to some or all of the at least one candidate cell When the execution condition of the conditional handover corresponding to the first candidate cell is satisfied, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device fails to access the first candidate cell, the signal quality corresponding to some or all of the at least one candidate cell.
  • a radio link failure occurs in the source cell of the terminal device, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device successfully connects
  • the first information further includes one or more of the following:
  • Time period 1 is the time period from when the terminal device receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from when a radio link failure occurs in the source cell until the terminal device determines the first cell
  • Time period 3 is a time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 4 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 4, or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 4.
  • the first information further includes one or more of the following:
  • Time period 5 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device receives the traditional handover message
  • Time period 6 the time period 6 is the time period from when the terminal device receives the traditional handover message to when the traditional handover fails
  • Time period 7 is the time period from when the traditional handover fails until the terminal device determines the first cell
  • Time period 8 is the time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 9 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 9, or,
  • the first information further includes one or more of the following:
  • Time period 10 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 11 is the time period from when the terminal device determines that the first candidate cell that satisfies the execution condition of the conditional handover to the terminal device fails to access the first candidate cell
  • Time period 12 is the time period from when the terminal device fails to access the first candidate cell until the terminal device determines the first cell
  • Time period 13 is a time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 14 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 14, or,
  • a time period constituted by any two or more consecutive time periods from the time period 10 to the time period 14.
  • the receiving unit 320 is further configured to receive instruction information for instructing to record the first information before receiving the first instruction information.
  • the sending unit 310 is further configured to send to the first network device the instruction information used to indicate that the recording of the first information has been completed before the receiving unit 320 receives the first instruction information. .
  • the receiving unit 320 is configured to receive first indication information from the first network device, where the first indication information is used to request the terminal device to report the first information; the sending unit 310 is configured to report the first information to the first network device One information.
  • a radio link failure occurs in the source cell of the terminal device, or a traditional handover fails, or the terminal device fails to access the first candidate cell that meets the execution condition of the conditional handover, and after the terminal device performs cell selection
  • the selected first cell belongs to at least one candidate cell, and the terminal device fails to access the first cell
  • the first information includes one or more of the following:
  • the first network device is a network device to which a re-established cell belongs, or a network device to which a cell in the RRC establishment process belongs, and the at least one candidate cell is indicated by an RRC reconfiguration message from a second network device, and
  • the second network device is a network device to which the source cell belongs, and the first candidate cell is one of the at least one candidate cell.
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, so
  • the first information further includes one or more of the following item:
  • the terminal device determines the first cell, the signal quality corresponding to some or all of the at least one candidate cell,
  • the terminal device fails to access the first cell, the signal quality corresponding to some or all of the candidate cells other than the first cell in the at least one candidate cell, or,
  • the terminal device When the terminal device performs the re-establishment procedure, the signal quality corresponding to some or all of the candidate cells other than the first cell in the at least one candidate cell.
  • the terminal device when the terminal device fails to access the first candidate cell that meets the execution condition of the conditional handover, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, And when the terminal device fails to access the first cell, the first information further includes one or more of the following:
  • the signal quality corresponding to some or all of the at least one candidate cell When the execution condition of the conditional handover corresponding to the first candidate cell is satisfied, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device fails to access the first candidate cell, the signal quality corresponding to some or all of the at least one candidate cell.
  • a radio link failure occurs in the source cell of the terminal device, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device accesses
  • the first information further includes one or more of the following:
  • Time period 1 is the time period from when the terminal device receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from the occurrence of a radio link failure in the source cell until the terminal device determines the first cell
  • Time period 3 is the time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 4 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell;
  • Time period 5 is the time period from when the terminal device determines to re-establish a cell until the terminal device reports the time period 5, or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 5.
  • the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device fails to access the first cell ,
  • the first information further includes one or more of the following:
  • Time period 6 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device receives the traditional handover message
  • Time period 7 is the time period from when the terminal device receives the traditional handover message to when the traditional handover fails
  • Time period 8 is the time period from when the traditional handover fails until the terminal device determines the first cell
  • Time period 9 is the time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 10 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell
  • Time period 11 is the time period from when the terminal device determines to re-establish a cell to when the terminal device reports the time period 11. or,
  • a time period constituted by any two or more consecutive time periods from the time period 6 to the time period 11.
  • the terminal device when the terminal device fails to access the first candidate cell that meets the execution condition of the conditional handover, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, And when the terminal device fails to access the first cell, the first information further includes one or more of the following:
  • Time period 12 is the time period from when the terminal device receives the RRC reconfiguration message until the terminal device determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 13 is a time period from when the terminal device determines that the first candidate cell that satisfies the execution condition of the conditional handover to the terminal device and the first candidate cell fails to access;
  • Time period 14 is the time period from when the terminal device fails to access the first candidate cell until the terminal device determines the first cell
  • Time period 15 is a time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 16 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell;
  • Time period 17 is the time period from when the terminal device determines that a cell is re-established to when the terminal device reports the time period 17, or,
  • a time period constituted by any two or more consecutive time periods from the time period 12 to the time period 17.
  • the method before the receiving the first indication information from the first network device, the method further includes:
  • the sending unit 310 is further configured to send to the first network device the instruction information used to indicate that the recording of the first information has been completed before the receiving unit 320 receives the first instruction information. .
  • each of the above-mentioned units may also be referred to as a module or a circuit, etc., and the above-mentioned various units may be provided independently, or may be fully or partially integrated.
  • the foregoing sending unit 310 and receiving unit 320 may also be implemented by a transceiving unit, or the sending unit 310 and the receiving unit 320 may also be collectively referred to as a transceiving unit.
  • the aforementioned sending unit 310 and receiving unit 320 or the transceiver unit may also be referred to as a communication interface.
  • the above-mentioned communication device 300 may further include a storage unit for storing data or instructions (also called codes or programs), and each of the above-mentioned units may interact or be coupled with the storage unit to implement the corresponding method or Features.
  • a storage unit for storing data or instructions (also called codes or programs), and each of the above-mentioned units may interact or be coupled with the storage unit to implement the corresponding method or Features.
  • FIG. 4 is a schematic diagram of a communication device provided by an embodiment of this application.
  • the device is used to implement the steps performed by the corresponding network device in the foregoing method embodiment.
  • the device 400 includes a sending unit 410 and a receiving unit 420.
  • the device may be a network device, or may be configured in a component (such as a chip or a circuit) of the network device.
  • the device may include one or more of the following possible implementation manners. In the first possible implementation:
  • the sending unit 410 is configured to send first indication information to the terminal device, where the first indication information is used to request the terminal device to report the first information; the receiving unit 420 is configured to receive the first information from the terminal device; where If a radio link failure occurs in the source cell of the terminal device, or a traditional handover fails, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, the terminal device performs cell selection and then selects In the case where the first cell out of the list belongs to at least one candidate cell, and the terminal device successfully accesses the first cell, the first information includes one or more of the following: Identification information, index information corresponding to the first cell, signal quality corresponding to the first cell when the terminal device successfully accesses the first cell, success reason value, or, the first cell satisfies cell selection Criterion and indication information of successful access; wherein, the first cell belongs to the first network device, the at least one candidate cell is indicated by an RRC reconfiguration message from a second network device, and the second network device is For the
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, so
  • the first information further includes one of the following or Multiple:
  • the terminal device determines the first cell, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device When the terminal device successfully accesses the first cell, the signal quality corresponding to some or all of the candidate cells other than the first cell in the at least one candidate cell.
  • the first information further includes one or more of the following:
  • the signal quality corresponding to some or all of the at least one candidate cell When the execution condition of the conditional handover corresponding to the first candidate cell is satisfied, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device fails to access the first candidate cell, the signal quality corresponding to some or all of the at least one candidate cell.
  • a radio link failure occurs in the source cell of the terminal device, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device successfully connects
  • the first information further includes one or more of the following:
  • Time period 1 is the time period from when the terminal device receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from when a radio link failure occurs in the source cell until the terminal device determines the first cell
  • Time period 3 is a time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 4 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 4, or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 4.
  • the first information further includes one or more of the following:
  • Time period 5 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device receives the traditional handover message
  • Time period 6 the time period 6 is the time period from when the terminal device receives the traditional handover message to when the traditional handover fails
  • Time period 7 is the time period from when the traditional handover fails until the terminal device determines the first cell
  • Time period 8 is the time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 9 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 9, or,
  • the first information further includes one or more of the following:
  • Time period 10 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 11 is the time period from when the terminal device determines that the first candidate cell that satisfies the execution condition of the conditional handover to the terminal device fails to access the first candidate cell
  • Time period 12 is the time period from when the terminal device fails to access the first candidate cell until the terminal device determines the first cell
  • Time period 13 is a time period from when the terminal device determines the first cell to when the terminal device successfully accesses the first cell
  • Time period 14 is the time period from when the terminal device successfully accesses the first cell to when the terminal device reports the time period 14, or,
  • a time period constituted by any two or more consecutive time periods from the time period 10 to the time period 14.
  • the receiving unit 420 is further configured to, before the sending unit sends the first instruction information to the terminal device, receive the instruction information used to indicate that the recording of the first information has been completed from the terminal device. .
  • the sending unit 410 is configured to send first indication information to the terminal device, where the first indication information is used to request the terminal device to report the first information; the receiving unit 420 is configured to receive the first information from the terminal device ;
  • the first information includes one or more of the following: the first cell The identification information corresponding to the first cell, the index information corresponding to the first cell, the conditional handover configuration information corresponding to the first cell, the signal quality corresponding to the first cell when the terminal device fails to access the first cell, and the failure Reason value, or, indication information indicating that the first cell meets the cell selection criteria and fails to access;
  • the first network device is the network device to which the cell to be re-established belongs, or the network device
  • a radio link failure or a traditional handover failure occurs in the source cell of the terminal device, or the terminal device fails to access the first candidate cell that meets the execution conditions of the conditional handover, so
  • the first information further includes one or more of the following item:
  • the terminal device determines the first cell, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device fails to access the first cell, the signal quality corresponding to some or all of the at least one candidate cell other than the first cell,
  • the terminal device When the terminal device performs the re-establishment procedure, the signal quality corresponding to some or all of the candidate cells other than the first cell in the at least one candidate cell.
  • the terminal device when the terminal device fails to access the first candidate cell that meets the execution condition of the conditional handover, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, And when the terminal device fails to access the first cell, the first information further includes one or more of the following:
  • the signal quality corresponding to some or all of the at least one candidate cell When the execution condition of the conditional handover corresponding to the first candidate cell is satisfied, the signal quality corresponding to some or all of the at least one candidate cell, or,
  • the terminal device fails to access the first candidate cell, the signal quality corresponding to some or all of the at least one candidate cell.
  • a radio link failure occurs in the source cell of the terminal device, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device accesses
  • the first information further includes one or more of the following:
  • Time period 1 is the time period from when the terminal device receives the RRC reconfiguration message to when the source cell has a radio link failure
  • Time period 2 is the time period from the occurrence of a radio link failure in the source cell until the terminal device determines the first cell
  • Time period 3 is the time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 4 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell;
  • Time period 5 is the time period from when the terminal device determines to re-establish a cell until the terminal device reports the time period 5, or,
  • a time period constituted by any two or more consecutive time periods from the time period 1 to the time period 5.
  • the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, and the terminal device fails to access the first cell ,
  • the first information further includes one or more of the following:
  • Time period 6 is the time period from when the terminal device receives the RRC reconfiguration message to when the terminal device receives the traditional handover message
  • Time period 7 is the time period from when the terminal device receives the traditional handover message to when the traditional handover fails
  • Time period 8 is the time period from when the traditional handover fails until the terminal device determines the first cell
  • Time period 9 is the time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 10 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell
  • Time period 11 is the time period from when the terminal device determines to re-establish a cell to when the terminal device reports the time period 11. or,
  • a time period constituted by any two or more consecutive time periods from the time period 6 to the time period 11.
  • the terminal device when the terminal device fails to access the first candidate cell that meets the execution condition of the conditional handover, the first cell selected by the terminal device after cell selection belongs to at least one candidate cell, And when the terminal device fails to access the first cell, the first information further includes one or more of the following:
  • Time period 12 is the time period from when the terminal device receives the RRC reconfiguration message until the terminal device determines the first candidate cell that satisfies the execution condition of the conditional handover,
  • Time period 13 is a time period from when the terminal device determines that the first candidate cell that satisfies the execution condition of the conditional handover to the terminal device and the first candidate cell fails to access;
  • Time period 14 is the time period from when the terminal device fails to access the first candidate cell until the terminal device determines the first cell
  • Time period 15 is a time period from when the terminal device determines the first cell to when the terminal device fails to access the first cell
  • Time period 16 is the time period from when the terminal device fails to access the first cell until the terminal device determines to re-establish the cell;
  • Time period 17 is the time period from when the terminal device determines that a cell is re-established to when the terminal device reports the time period 17, or,
  • a time period constituted by any two or more consecutive time periods from the time period 12 to the time period 17.
  • the receiving unit 420 is further configured to, before the sending unit sends the first instruction information to the terminal device, receive the instruction information used to indicate that the recording of the first information has been completed from the terminal device. .
  • each of the above-mentioned units may also be referred to as a module or a circuit, etc., and the above-mentioned various units may be provided independently, or may be fully or partially integrated.
  • the foregoing sending unit 410 and receiving unit 420 may also be implemented by a transceiving unit, or the sending unit 410 and the receiving unit 420 may also be collectively referred to as a transceiving unit.
  • the aforementioned sending unit 410 and receiving unit 420 or the transceiving unit may also be referred to as a communication interface.
  • the aforementioned communication device 400 may further include a storage unit for storing data or instructions (also referred to as codes or programs), and each of the aforementioned units may interact or couple with the storage unit to implement corresponding methods or Features.
  • a storage unit for storing data or instructions (also referred to as codes or programs), and each of the aforementioned units may interact or couple with the storage unit to implement corresponding methods or Features.
  • each unit in the device can be all implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; part of the units can also be implemented in the form of software called by the processing elements, and some of the units can be implemented in the form of hardware.
  • each unit can be a separate processing element, or it can be integrated in a certain chip of the device for implementation.
  • it can also be stored in the memory in the form of a program, which is called and executed by a certain processing element of the device.
  • each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in a processor element or implemented in a form of being called by software through a processing element.
  • the unit in any of the above devices may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASICs), or, one or Multiple microprocessors (digital singnal processors, DSPs), or, one or more field programmable gate arrays (Field Programmable Gate Arrays, FPGAs), or a combination of at least two of these integrated circuits.
  • ASICs application specific integrated circuits
  • DSPs digital singnal processors
  • FPGAs Field Programmable Gate Arrays
  • the unit in the device can be implemented in the form of a processing element scheduler
  • the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs.
  • CPU central processing unit
  • these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • the above receiving unit is an interface circuit of the device for receiving signals from other devices.
  • the receiving unit is an interface circuit used by the chip to receive signals from other chips or devices.
  • the above unit for sending is an interface circuit of the device for sending signals to other devices.
  • the sending unit is an interface circuit used by the chip to send signals to other chips or devices.
  • An embodiment of the present application also provides a communication device, which is used to implement the units (or means) of each step performed by the terminal device in any of the above methods or used to implement each of the steps performed by the network device in any of the above methods.
  • the communication device may include a processor and a memory.
  • the memory is used to store computer-executable instructions.
  • the processor executes the computer-executable instructions stored in the memory, so that the device executes the above-mentioned various aspects. method.
  • the device may be a network device or a chip used for a network device, or a terminal device or a chip used for a terminal device.
  • the terminal equipment includes: an antenna 510, a radio frequency device 520, and a signal processing part 530.
  • the antenna 510 is connected to the radio frequency device 520.
  • the radio frequency device 520 receives the information sent by the network device through the antenna 510, and sends the information sent by the network device to the signal processing part 530 for processing.
  • the signal processing part 530 processes the information of the terminal equipment and sends it to the radio frequency device 520
  • the radio frequency device 520 processes the information of the terminal equipment and sends it to the network equipment via the antenna 510.
  • the signal processing part 530 is used to realize the processing of each communication protocol layer of the data.
  • the signal processing part 530 may be a subsystem of the terminal device, and the terminal device may also include other subsystems, such as a central processing subsystem, which is used to process the terminal device operating system and application layer; another example is the peripheral sub-system.
  • the system is used to realize the connection with other equipment.
  • the signal processing part 530 may be a separately provided chip.
  • the above devices may be located in the signal processing part 530.
  • the signal processing part 530 may include one or more processing elements 5031, for example, a main control CPU and other integrated circuits, and an interface circuit 5033.
  • the signal processing part 530 may further include a storage element 5032.
  • the storage element 5032 is used to store data and programs.
  • the program used to execute the method performed by the terminal device in the above method may or may not be stored in the storage element 5032, for example, stored in a memory other than the signal processing part 530 During use, the signal processing part 530 loads the program into the cache for use.
  • the interface circuit 5033 is used to communicate with the device.
  • the above devices may be located in the signal processing part 530, and the signal processing part 530 may be implemented by a chip.
  • the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute each step of any method executed by the above terminal device.
  • the circuit is used to communicate with other devices.
  • the unit that implements each step in the above method can be implemented in the form of a processing element scheduler.
  • the device includes a processing element and a storage element, and the processing element calls a program stored by the storage element to execute the above method embodiments.
  • the storage element may be a storage element whose processing element is on the same chip, that is, an on-chip storage element.
  • the program used to execute the method executed by the terminal device in the above method may be a storage element on a different chip from the processing element, that is, an off-chip storage element.
  • the processing element calls or loads a program from the off-chip storage element on the on-chip storage element to call and execute the method executed by the terminal device in the above method embodiment.
  • the unit of the terminal device that implements each step in the above method may be configured as one or more processing elements, and these processing elements are provided on the signal processing part 530, where the processing elements may be integrated circuits, for example : One or more ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.
  • the units that implement each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC), and the SOC chip is used to implement the above method.
  • SOC system-on-a-chip
  • the chip can integrate at least one processing element and a storage element, and the processing element can call the stored program of the storage element to implement the method executed by the above terminal device; or, the chip can integrate at least one integrated circuit to implement the above terminal The method executed by the device; or, it can be combined with the above implementations.
  • the functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.
  • the above apparatus may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any method executed by the terminal device provided in the above method embodiment.
  • the processing element can execute part or all of the steps executed by the terminal device in the first way: calling the program stored in the storage element; or in the second way: combining instructions through the integrated logic circuit of the hardware in the processor element Part or all of the steps executed by the terminal device are executed in a manner; of course, part or all of the steps executed by the terminal device may also be executed in combination with the first manner and the second manner.
  • the processing element here is the same as the above description, and it may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or, one or more micro-processing DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.
  • the storage element can be a memory or a collective term for multiple storage elements.
  • the network equipment includes: an antenna 610, a radio frequency device 620, and a baseband device 630.
  • the antenna 610 is connected to the radio frequency device 620.
  • the radio frequency device 620 receives the information sent by the terminal device through the antenna 610, and sends the information sent by the terminal device to the baseband device 630 for processing.
  • the baseband device 630 processes the information of the terminal device and sends it to the radio frequency device 620
  • the radio frequency device 620 processes the information of the terminal device and sends it to the terminal device via the antenna 610.
  • the baseband device 630 may include one or more processing elements 631, for example, a main control CPU and other integrated circuits, and an interface 633.
  • the baseband device 630 may also include a storage element 632, the storage element 632 is used to store programs and data; the interface 633 is used to exchange information with the radio frequency device 620, the interface is, for example, a common public radio interface (CPRI) .
  • the above apparatus for network equipment may be located in the baseband apparatus 630.
  • the above apparatus for network equipment may be a chip on the baseband apparatus 630.
  • the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute the above network. For each step of any method executed by the device, the interface circuit is used to communicate with other devices.
  • the unit for the network device to implement each step in the above method can be implemented in the form of a processing element scheduler.
  • the device for the network device includes a processing element and a storage element, and the processing element calls the program stored by the storage element to Perform the method performed by the network device in the above method embodiment.
  • the storage element may be a storage element with the processing element on the same chip, that is, an on-chip storage element, or a storage element on a different chip from the processing element, that is, an off-chip storage element.
  • the unit of the network device that implements each step in the above method may be configured as one or more processing elements, and these processing elements are arranged on the baseband device.
  • the processing elements here may be integrated circuits, such as one Or multiple ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.
  • the units for the network equipment to implement each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • the baseband device includes the SOC chip for implementing the above method.
  • At least one processing element and storage element can be integrated in the chip, and the processing element can call the stored program of the storage element to implement the method executed by the above network device; or, at least one integrated circuit can be integrated in the chip to implement the above network The method executed by the device; or, it can be combined with the above implementations.
  • the functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.
  • the above apparatus for a network device may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any method performed by the network device provided in the above method embodiments.
  • the processing element can execute part or all of the steps executed by the network device in the first way: calling the program stored in the storage element; or in the second way: combining instructions through the integrated logic circuit of the hardware in the processor element Part or all of the steps performed by the network device are executed in the method; of course, part or all of the steps executed by the network device above can also be executed in combination with the first method and the second method.
  • the processing element here is the same as the above description, and it may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or, one or more micro-processing DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.
  • the storage element can be a memory or a collective term for multiple storage elements.
  • An embodiment of the present application also provides a communication system, including the communication device as shown in FIG. 3 and the communication device as shown in FIG. 4.
  • FIG. 5 Another embodiment of the present application provides a communication system, including a terminal device as shown in FIG. 5 and a network device as shown in FIG. 6.
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the various illustrative logic units and circuits described in the embodiments of this application can be implemented by general-purpose processors, digital signal processors, application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, Discrete gates or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions.
  • the general-purpose processor may be a microprocessor.
  • the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine.
  • the processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. achieve.
  • the aforementioned functions described in this application can be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions can be stored on a computer-readable medium, or transmitted on the computer-readable medium in the form of one or more instructions or codes.
  • Computer-readable media include computer storage media and communication media that facilitate the transfer of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special computer.
  • Such computer-readable media may include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other device that can be used to carry or store instructions or data structures and Other program code media that can be read by general-purpose or special computers, or general-purpose or special processors.
  • any connection can be appropriately defined as a computer-readable medium, for example, if the software is from a website, server, or other remote source through a coaxial cable, fiber optic computer, twisted pair, or digital subscriber line (DSL) Or transmitted by wireless means such as infrared, wireless and microwave are also included in the definition of computer-readable media.
  • DSL digital subscriber line
  • the disks and discs include compressed disks, laser disks, optical disks, digital versatile disks (English: Digital Versatile Disc, abbreviated as DVD), floppy disks, and Blu-ray disks. Disks usually copy data with magnetism. Discs usually use lasers to copy data optically. The combination of the above can also be contained in a computer readable medium.
  • the functions described in this application can be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium.
  • the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another.
  • the storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

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Abstract

本申请提供通信方法、装置及系统。该方法包括：从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；向所述第一网络设备上报所述第一信息，所述第一信息包括条件切换流程中的相关信息。基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。

Description

通信方法、装置及系统 技术领域
本申请涉及移动通信技术领域，尤其涉及通信方法、装置及系统。
背景技术
传统切换机制中，网络设备向终端设备发送包含目标小区的配置信息的切换消息，使终端设备根据所述配置信息尝试接入或切换至所述目标小区。传统切换中，切换消息的成功发送是保证传统切换机制下成功切换的必要条件。然而，由于信道质量的快速衰减、或者终端设备的快速移动以及物体的遮挡，或者测量、切换准备的持续时间较长等都会导致切换消息发送失败，进而导致切换失败，降低切换成功率。
鉴于传统切换存在的上述问题，目前提出了条件切换机制以提升切换成功率、鲁棒性。条件切换机制中，网络设备向终端设备发送至少一个候选小区的配置信息，使所述终端设备根据所述配置信息确定出目标小区，并尝试接入或切换至所述目标小区，其中，所述目标小区属于所述至少一个候选小区。
无论是在传统切换机制还是在条件切换机制中，切换参数(如，目标小区的配置信息、至少一个候选小区的配置信息等)始终是影响到传统切换、条件切换成功率的关键因素之一。为了优化传统切换机制中的切换参数，引入了移动鲁棒性优化(mobility robustness optimization，MRO)机制，即终端设备上报传统切换过程中的相关信息，进而，网络设备可以根据终端设备上报的该相关信息进行切换参数的优化。
目前的移动鲁棒性优化机制只针对传统切换机制，然而对于条件切换机制，目前还没有相应的移动鲁棒性优化机制。
发明内容
本申请提供通信方法、装置及系统，用以上报记录的条件切换流程中的相关信息，从而提高系统可靠性、鲁棒性。
第一方面，本申请提供一种通信方法，包括：从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；向所述第一网络设备上报所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息包括以下中的一项或多项：所述第一小区的标识信息、所述第一小区对应的索引信息、所述终端设备成功接入所述第一小区时所述第一小区对应的信号质量、成功原因值、或，所述第一小区满足小区选择准则且接入成功的指示信息；其中，所述第一小区属于所述第一网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信 息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。
在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：接收用于指示记录所述第一信息的指示信息。该指示信息可以称为第二指示信息。该第二指示信息可以来自上述第二网络设备。
在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：向所述第一网络设备发送用于指示已经完成所述第一信息的记录的指示信息。该指示信息可以称为第三指示信息。该第三指示信息可以发送至所述第一网络设备。
可选的，可以在RRC重配置消息(该RRC重配置消息可以是包含CHO配置信息的RRC消息，或用于传统切换的RRC消息(即切换消息))中包含上述第二指示信息。UE可以在向成功接入的第一小区所属的网络设备发送的RRC重配置完成消息中包含记录的相应场景中的相关信息(即上述第一信息中的部分或全部)。可选地，还可以在RRC重配置完成消息包含上述第三指示信息。
第二方面，本申请提供一种通信方法，包括：从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；向所述第一网络设备上报所述第一信息；其中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：第一候选小区的标识信息、第一候选小区对应的索引信息、终端设备成功接入所述第一候选小区时所述第一候选小区对应的信号质量、成功原因值、第一候选小区满足条件切换的执行条件且接入成功的指示信息、或，终端设备成功接入第一候选小区时的所述至少一个候选小区中除第一候选小区之外的其他候选小区中的部分或全部候选小区对应的信号质量；其中，所述第一网络设备为第一候选小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。
在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：接收用于指示记录所述第一信息的指示信息。该指示信息可以称为第二指示信息。该第二指示信息可以来自上述第二网络设备。
在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：向所述第一网络设备发送用于指示已经完成所述第一信息的记录的指示信息。该指示信息可以称为第三指示信息。该第三指示信息可以发送至所述第一网络设备。
可选的，可以在RRC重配置消息(该RRC重配置消息可以是包含CHO配置信息的RRC消息，或用于传统切换的RRC消息(即切换消息))中包含上述第二指示信息。UE可以在向成功接入的第一小区所属的网络设备发送的RRC重配置完成消息中包含记录的相应场景中的相关信息(即上述第一信息中的部分或全部)。可选地，还可以在RRC重配置完成消息包含上述第三指示信息。
第三方面，本申请提供一种通信方法，包括：从第一网络设备接收第一指示信息，所 述第一指示信息用于请求终端设备上报第一信息；向所述第一网络设备上报所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息包括以下中的一项或多项：所述第一小区的标识信息、所述第一小区对应的索引信息、所述第一小区对应的条件切换配置信息、所述终端设备接入所述第一小区失败时所述第一小区对应的信号质量、失败原因值、或，所述第一小区满足小区选择准则且接入失败的指示信息；其中，所述第一网络设备为重建立小区所属的网络设备、或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。
在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：接收用于指示记录所述第一信息的指示信息。该指示信息可以称为第二指示信息。该第二指示信息可以来自上述第二网络设备。在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：向所述第一网络设备发送用于指示已经完成所述第一信息的记录的指示信息。该指示信息可以称为第三指示信息。该第三指示信息可以发送至所述第一网络设备。
可选的，可以在RRC重配置消息(该RRC重配置消息可以是包含CHO配置信息的RRC消息，或用于传统切换的RRC消息(即切换消息))中包含上述第二指示信息。如果重建立成功，第一网络设备可以是重建立小区所属的网络设备，UE可以在向重建立小区所属的网络设备发送的RRC重建立完成消息中包含记录的相应场景中的相关信息(即第一信息中的部分或全部)。可选地，RRC重建立完成消息中还可以包含第三指示信息。如果重建立失败，第一网络设备可以是RRC建立过程中的小区所属的网络设备，UE可以在向RRC建立过程中的小区所属的网络设备发送的RRC建立完成消息中包含记录的相应场景中的相关信息(即第一信息中的部分或全部)。可选地，RRC建立完成消息中还可以包含第三指示信息。
第四方面，本申请提供一种通信方法，包括：从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；向所述第一网络设备上报所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息包括以下中的一项或多项：重建立小区的小区标识信息、执行重建立流程时重建立小区对应的信号质量、重建立原因值、终端设备进行小区选择后选择出的小区虽满足小区选择准则但不属于至少一个候选小区的指示信息、或，终端设备执行重建立流程时至少一个候选小区中的部分或全部候选小区对应的信号质量；其中，所述第一网络设备为重建立小区所属的网络设备或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小 区中的一个。
基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。
在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：接收用于指示记录所述第一信息的指示信息。该指示信息可以称为第二指示信息。该第二指示信息可以来自上述第二网络设备。
在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：向所述第一网络设备发送用于指示已经完成所述第一信息的记录的指示信息。该指示信息可以称为第三指示信息。该第三指示信息可以发送至所述第一网络设备。
可选的，可以在RRC重配置消息(该RRC重配置消息可以是包含CHO配置信息的RRC消息，或用于传统切换的RRC消息(即切换消息))中包含上述第二指示信息。如果重建立成功，第一网络设备可以是重建立小区所属的网络设备，UE可以在向重建立小区所属的网络设备发送的RRC重建立完成消息中包含记录的相应场景中的相关信息(即第一信息中的部分或全部)。可选地，RRC重建立完成消息中还可以包含第三指示信息。如果重建立失败，第一网络设备可以是RRC建立过程中的小区所属的网络设备，UE可以在向RRC建立过程中的小区所属的网络设备发送的RRC建立完成消息中包含记录的相应场景中的相关信息(即第一信息中的部分或全部)。可选地，RRC建立完成消息中还可以包含第三指示信息。
第五方面，本申请提供一种通信方法，包括：第一网络设备向终端设备发送第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；所述第一网络设备从所述终端设备接收所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息包括以下中的一项或多项：所述第一小区的标识信息、所述第一小区对应的索引信息、所述终端设备成功接入所述第一小区时所述第一小区对应的信号质量、成功原因值、或，所述第一小区满足小区选择准则且接入成功的指示信息；其中，所述第一小区属于所述第一网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。
在一种可能的实现方法中，所述向终端设备发送第一指示信息之前，还包括：从所述终端设备接收用于指示已经完成所述第一信息的记录的指示信息。
第六方面，本申请提供一种通信方法，包括：第一网络设备向终端设备发送第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；所述第一网络设备从所述终端设备接收所述第一信息；其中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：第一候选小区的标识 信息、第一候选小区对应的索引信息、终端设备成功接入所述第一候选小区时所述第一候选小区对应的信号质量、成功原因值、第一候选小区满足条件切换的执行条件且接入成功的指示信息、或，终端设备成功接入第一候选小区时的所述至少一个候选小区中除第一候选小区之外的其他候选小区中的部分或全部候选小区对应的信号质量；其中，所述第一网络设备为第一候选小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。
在一种可能的实现方法中，所述向终端设备发送第一指示信息之前，还包括：从所述终端设备接收用于指示已经完成所述第一信息的记录的指示信息。
第七方面，本申请提供一种通信方法，包括：第一网络设备向终端设备发送第一指示信息，所述第一指示信息用于请求所述终端设备上报第一信息；所述第一网络设备从所述终端设备接收所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息包括以下中的一项或多项：所述第一小区的标识信息、所述第一小区对应的索引信息、所述第一小区对应的条件切换配置信息、所述终端设备接入所述第一小区失败时所述第一小区对应的信号质量、失败原因值、或，所述第一小区满足小区选择准则且接入失败的指示信息；其中，所述第一网络设备为重建立小区所属的网络设备、或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。
在一种可能的实现方法中，所述向终端设备发送第一指示信息之前，还包括：从所述终端设备接收用于指示已经完成所述第一信息的记录的指示信息。
第八方面，本申请提供一种通信方法，包括：第一网络设备向终端设备发送第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；所述第一网络设备从所述终端设备接收所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息包括以下中的一项或多项：重建立小区的小区标识信息、执行重建立流程时重建立小区对应的信号质量、重建立原因值、终端设备进行小区选择后选择出的小区虽满足小区选择准则但不属于至少一个候选小区的指示信息、或，终端设备执行重建立流程时至少一个候选小区中的部分或全部候选小区对应的信号质量；其中，所述第一网络设备为重建立小区所属的网络设备或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小 区为所述至少一个候选小区中的一个。
基于上述方案，终端设备可以向第一网络设备上报记录的条件切换流程中的相关信息，从而第一网络设备或其他网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或条件切换配置信息)的调整，从而提高系统可靠性、鲁棒性。
在一种可能的实现方法中，所述向终端设备发送第一指示信息之前，还包括：从所述终端设备接收用于指示已经完成所述第一信息的记录的指示信息。
基于上述第一方面、或上述第一方面任一实现方法、或上述第五方面、或上述第五方面任一实现方法，还提供以下实现方法：
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备成功接入所述第一小区时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出所述第一小区的时间段，
时间段3，所述时间段3为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段4，所述时间段4为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段4的时间段，或，
所述时间段1至所述时间段4中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段5，所述时间段5为所述终端设备收到所述RRC重配置消息到所述终端设备收 到传统切换消息的时间段，
时间段6，所述时间段6为所述终端设备收到传统切换消息到传统切换失败的时间段，
时间段7，所述时间段7为传统切换失败到所述终端设备确定出所述第一小区的时间段，
时间段8，所述时间段8为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段9，所述时间段9为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段9的时间段，或，
所述时间段5至所述时间段9中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段10，所述时间段10为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段11，所述时间段11为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
时间段12，所述时间段12为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
时间段13，所述时间段13为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段14，所述时间段14为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段14的时间段，或，
所述时间段10至所述时间段14中任意两个或两个以上的连续时间段构成的时间段。
基于上述第二方面、或上述第二方面任一实现方法、或上述第六方面、或上述第六方面任一实现方法，还提供以下实现方法：
在一种可能的实现方法中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：第一候选小区的标识信息、第一候选小区对应的索引信息、终端设备成功接入所述第一候选小区时所述第一候选小区对应的信号质量、成功原因值、该第一候选小区满足条件切换的执行条件且接入成功的指示信息、或，终端设备成功接入至第一候选小区时的所述至少一个候选小区中除第一候选小区之外的其他候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：该源小区的小区标识信息、或，该源小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选 小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：测量报告上报时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、终端设备确定出所述第一候选小区时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、终端设备收到包含条件切换配置信息的RRC消息时至少一个候选小区中的部分或全部候选小区对应的信号质量、或，终端设备向第一候选小区发送RRC重配置完成消息时至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：
时间段1，所述时间段1为收到包含条件切换配置信息的RRC消息到确定出满足条件切换的执行条件的第一候选小区的时间段，
时间段2，所述时间段2为确定出满足条件切换的执行条件的第一候选小区到终端设备与第一候选小区的接入成功的时间段，
时间段3，所述时间段3为终端设备成功接入所述第一候选小区到终端设备上报所述时间段3的时间段，或，
所述时间段1至所述时间段3中任意两个或两个以上的连续时间段构成的时间段。
基于上述第三方面、或上述第三方面任一实现方法、或上述第七方面、或上述第七方面任一实现方法，还提供以下实现方法：
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，
所述终端设备接入所述第一小区失败时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量，或，
所述终端设备执行重建立流程时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生 无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出第一小区的时间段，
时间段3，所述时间段3为所述终端设备确定出第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段4，所述时间段4为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
时间段5，所述时间段5为所述终端设备确定出重建立小区到所述终端设备上报所述时间段5的时间段，或，
所述时间段1至所述时间段5中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段6，所述时间段6为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
时间段7，所述时间段7为所述终端设备收到传统切换消息到传统切换失败的时间段，
时间段8，所述时间段8为传统切换失败到所述终端设备确定出所述第一小区的时间段，
时间段9，所述时间段9为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段10，所述时间段10为所述终端设备接入所述第一小区失败到所述终端设备确定重建立小区的时间段，
时间段11，所述时间段11为所述终端设备确定出重建立小区到所述终端设备上报所述时间段11的时间段，或，
所述时间段6至所述时间段11中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段12，所述时间段12为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段13，所述时间段13为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
时间段14，所述时间段14为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
时间段15，所述时间段15为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段16，所述时间段16为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
时间段17，所述时间段17为所述终端设备确定出重建立小区到所述终端设备上报所述时间段17的时间段，或，
所述时间段12至所述时间段17中任意两个或两个以上的连续时间段构成的时间段。
基于上述第四方面、或上述第四方面任一实现方法、或上述第八方面、或上述第八方面任一实现方法，还提供以下实现方法：
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息还包括以下中的一项或多项：重建立小区的小区标识信息、执行重建立流程时重建立小区对应的信号质量、重建立原因值、终端设备进行小区选择后选择出的小区虽满足小区选择准则但不属于至少一个候选小区的指示信息、或，终端设备执行重建立流程时至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息还包括以下中的一项或多项：该源小区的小区标识信息、该源小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败的情形下，所述第一信息还包括以下中的一项或多项：失败原因值、该源小区发生无线链路失败的指示信息、或，源小区发生无线链路失败时至少一个候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的传统切换失败的情形下，所述第一信息还包括以下中的一项或多项：目标小区的小区标识信息、该目标小区对应的信号质量、失败原因值、传统切换失败的指示信息、或，传统切换失败时的至少一个候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息还包括以下中的一项或多项：第一候选小区的小区标识信息、第一候选小区对应的索引信息、第一候选小区对应的条件切换配置信息、终端设备接入或切换至第一候选小区失败时第一候选小区对应的信号质量、失败原因值、第一候选小区满足条件切换的执行条件但是终端设备接入或切换失败的指示信息、终端设备接入或切换至第一候选小区失败时其他候选小区对应的信号质量、所述第一候选小区对应的条件切换的执行条件满足时第一候选小区对应的信号质量、或，所述第一候选小区对应的条件切换的执行条件满足时其他候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息还包括以下中的一项或多项：测量报告上报时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、终端设备收到包含条件切换配置信息的RRC消息时至少一个候选小区中的部分或全部候选小区对应的信号质量、RRC重建立失败时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、RRC建立流程成功时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、或，RRC重建立成功时至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败的情形下，所 述第一信息还包括以下中的一项或多项：
时间段1，所述时间段1为终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到终端设备确定出第二小区的时间段，
时间段3，所述时间段3为终端设备确定出第二小区到终端设备上报所述时间段3的时间段，或，
所述时间段1至所述时间段3中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在所述终端设备的传统切换失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段4，所述时间段4为终端设备收到所述RRC重配置消息到终端设备收到传统切换消息的时间段，
时间段5，所述时间段6为终端设备收到传统切换消息到传统切换失败的时间段，
时间段6，所述时间段6为传统切换失败到终端设备确定出第二小区的时间段，
时间段7，所述时间段7为终端设备确定出第二小区到终端设备上报所述时间段7的时间段，或，
所述时间段4至所述时间段7中任意两个或两个以上的连续时间段构成的时间段
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段8，所述时间段8为终端设备收到所述RRC重配置消息到终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段9，所述时间段9为终端设备确定出满足条件切换的执行条件的所述第一候选小区到终端设备与所述第一候选小区切换或接入失败的时间段，
时间段10，所述时间段10为终端设备与所述第一候选小区切换或接入失败到终端设备确定出第二小区的时间段，
时间段11，所述时间段11为终端设备确定出第二小区到终端设备上报所述时间段11的时间段，或，
所述时间段8至所述时间段11中任意两个或两个以上的连续时间段构成的时间段。
第九方面，本申请提供一种通信装置，该装置可以是终端设备，还可以是用于终端设备的芯片。该装置具有实现上述第一方面至第四方面、第一方面至第四方面的各实施例中的任一实施例的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第十方面，本申请提供一种通信装置，该装置可以是网络设备，还可以是用于网络设备的芯片。该装置具有实现上述第五方面至第八方面、第五方面至第八方面的各实施例中的任意实施例的功能。该功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第十一方面，本申请提供一种通信装置，包括处理器和存储器；该存储器用于存储计算机执行指令，当该装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该装置执行上述第一方面至第八方面、第一方面至第八方面的各实施例中的任意实施例的 功能的方法。
第十二方面，本申请提供一种通信装置，包括用于执行上述第一方面至第八方面、第一方面至第八方面的各实施例中的任意实施例的各个步骤的单元或手段(means)。
第十三方面，本申请提供一种通信装置，包括处理器和接口电路，所述处理器用于通过接口电路与其它装置通信，并执行上述第一方面至第八方面、第一方面至第八方面的各实施例中的任意实施例的方法。该处理器包括一个或多个。
第十四方面，本申请提供一种通信装置，包括处理器，用于与存储器相连，用于调用所述存储器中存储的程序，以执行上述第一方面至第八方面、第一方面至第八方面的各实施例中的任意实施例的方法。该存储器可以位于该装置之内，也可以位于该装置之外。且该处理器包括一个或多个。
第十五方面，本申请还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得处理器执行上述第一方面至第八方面、第一方面至第八方面的各实施例中的任意实施例所述的方法。
第十六方面，本申请还提供一种包括指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面至第八方面、第一方面至第八方面的各实施例中的任意实施例所述的方法。
第十七方面，本申请还提供一种芯片系统，包括：处理器，用于执行上述第一方面至第八方面、第一方面至第八方面的各实施例中的任意实施例所述的方法。
第十八方面，本申请还提供一种通信系统，包括：第一网络设备和终端设备；
所述第一网络设备，用于向所述终端设备发送第一指示信息，所述第一指示信息用于请求所述终端设备上报第一信息；
所述终端设备，用于向所述第一网络设备上报所述第一信息；
其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息包括以下中的一项或多项：
所述第一小区的标识信息、所述第一小区对应的索引信息、所述终端设备成功接入所述第一小区时所述第一小区对应的信号质量、成功原因值、或，所述第一小区满足小区选择准则且接入成功的指示信息；
其中，所述第一小区属于所述第一网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
第十九方面，本申请还提供一种通信系统，包括：第一网络设备和终端设备；
所述第一网络设备，用于向所述终端设备发送第一指示信息，所述第一指示信息用于请求所述终端设备上报第一信息；
所述终端设备，用于向所述第一网络设备上报所述第一信息；
其中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：
第一候选小区的标识信息、第一候选小区对应的索引信息、终端设备成功接入所述第 一候选小区时所述第一候选小区对应的信号质量、成功原因值、第一候选小区满足条件切换的执行条件且接入成功的指示信息、或，终端设备成功接入第一候选小区时的所述至少一个候选小区中除第一候选小区之外的其他候选小区中的部分或全部候选小区对应的信号质量；
其中，所述第一网络设备为第一候选小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
第二十方面，本申请还提供一种通信系统，包括：第一网络设备和终端设备；
所述第一网络设备，用于向所述终端设备发送第一指示信息，所述第一指示信息用于请求所述终端设备上报第一信息；
所述终端设备，用于向所述第一网络设备上报所述第一信息；
其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息包括以下中的一项或多项：
所述第一小区的标识信息、所述第一小区对应的索引信息、所述第一小区对应的条件切换配置信息、所述终端设备接入所述第一小区失败时所述第一小区对应的信号质量、失败原因值、或，所述第一小区满足小区选择准则且接入失败的指示信息；
其中，所述第一小区属于所述第一网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
第二十一方面，本申请还提供一种通信系统，包括：第一网络设备和终端设备；
所述第一网络设备，用于向所述终端设备发送第一指示信息，所述第一指示信息用于请求所述终端设备上报第一信息；
所述终端设备，用于向所述第一网络设备上报所述第一信息；
其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息包括以下中的一项或多项：
重建立小区的小区标识信息、执行重建立流程时重建立小区对应的信号质量、重建立原因值、终端设备进行小区选择后选择出的小区虽满足小区选择准则但不属于至少一个候选小区的指示信息、或，终端设备执行重建立流程时至少一个候选小区中的部分或全部候选小区对应的信号质量；
其中，所述第一网络设备为重建立小区所属的网络设备或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
附图说明
图1为本申请所适用的一种网络架构示意图；
图2为本申请提供的一种通信方法流程示意图；
图3为本申请提供的一种通信装置示意图；
图4为本申请提供的又一种通信装置示意图；
图5为本申请提供的一种终端设备示意图；
图6为本申请提供的一种网络设备示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。方法实施例中的具体操作方法也可以应用于装置实施例或系统实施例中。其中，在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。如图1所示，为本申请所适用的一种网络架构示意图，包括终端设备和网络设备。该终端设备通过无线接口与网络设备通信。
终端设备可以是能够接收网络设备调度和指示信息的无线终端设备，无线终端设备可以是指向用户提供语音和/或数据连通性的设备，或具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端设备可以经无线接入网(如，radio access network，RAN)与一个或多个核心网或者互联网进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话，手机(mobile phone))、计算机和数据卡，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、平板电脑(Pad)、带无线收发功能的电脑等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile station，MS)、远程站(remote station)、接入点(access point，AP)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户站(subscriber station，SS)、用户端设备(customer premises equipment，CPE)、终端(terminal)、用户设备(user equipment，UE)、移动终端(mobile terminal，MT)等。终端设备也可以是可穿戴设备以及下一代通信系统，例如，5G网络中的终端设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)网络中的终端设备，NR通信系统中的终端设备等。为便于说明，本申请实施例中以终端设备为UE作为示例进行说明。
网络设备是网络侧中一种用于发射或接收信号的实体，如新一代基站(generation Node B，gNodeB)。网络设备可以是用于与移动设备通信的设备。网络设备可以是无线局域网(wireless local area networks，WLAN)中的AP，长期演进(long term evolution，LTE)中的演进型基站(evolutional Node B，eNB或eNodeB)，或者中继站或接入点，或者车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)网络中的网络设备，或NR系统中的gNodeB等。另外，在本申请实施例中，网络设备为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信，该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供 高速率的数据传输服务。此外，在其它可能的情况下，网络设备可以是其它为终端设备提供无线通信功能的装置。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。为方便描述，本申请实施例中，为终端设备提供无线通信功能的装置统称为网络设备。
为便于理解本申请方案，下面首先对相关技术进行介绍说明。
一、传统切换机制
在移动通信系统中，传统切换流程中，连接态UE的移动性管理是由网络设备控制的，即网络设备通过向UE发送切换消息，指示UE进行切换。具体的，源基站向UE发送切换消息以控制UE从源小区切换到目标小区。可以理解为，传统切换指的是源小区所属的网络设备向UE发送目标小区的配置信息，使所述UE根据所述配置信息尝试接入或切换至所述目标小区。
上述切换消息可以是无线资源控制(radio resource control，RRC)消息。比如，NR系统中该RRC消息可以是携带同步重配置信元(reconfiguration with sync)的RRC重配置消息。再比如，长期演进(long term evolution，LTE)系统中该RRC消息可以是携带移动性控制信息信元(mobility control info)的RRC连接重配置消息。切换消息中包含目标小区的相关信息以及UE接入该目标小区所需的相关配置参数，例如，切换消息中可以包含目标小区的物理小区标识(Physical cell Identifier，PCI)、目标小区对应的频率信息、目标小区为UE分配的小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)、接入目标小区所需的随机接入信道(Random Access Channel，RACH)资源信息(如，专用RACH资源和/或公共RACH资源)等。UE在接收到该切换消息后，根据切换消息中包含的内容，接入目标小区，因此，切换消息的成功发送是保证传统切换机制下成功切换的必要条件。然而，在LTE系统或NR系统中，信道质量的快速衰减、或者UE的快速移动以及物体的遮挡，或者测量、切换准备的持续时间较长等都会导致切换消息发送失败，进而导致切换失败，降低切换成功率。
二、条件切换(Conditional Handover，CHO)机制
鉴于传统切换存在的上述问题，提出了CHO机制以提升切换成功率、鲁棒性。CHO中，网络可以给UE配置一个或多个候选小区。具体的，若网络给UE配置多个候选小区，则网络可以通过一条RRC消息或者多条RRC消息给UE发送该多个候选小区分别对应的CHO配置信息。上述RRC消息可以是新定义的消息(如CondRRCReconfiguration，或者其他命名/表达形式，对此不作限定)或重用现有的RRC消息(例如重用RRC重配置消息，具体的，例如，该RRC消息可以是RRC重配置消息，或者，该RRC消息还可以是RRC连接重配置消息)。可以理解为，条件切换指的是源小区所属的网络设备向UE发送至少一个候选小区的配置信息，所述UE根据所述配置信息确定出目标小区，并尝试接入或切换至所述目标小区，其中，所述目标小区属于所述至少一个候选小区。
例如，源基站在源链路信号质量较好时向UE发送该RRC消息，该RRC消息中可以包含各个候选小区分别对应的CHO配置信息。具体的，该CHO配置信息中可以包括CHO触发条件(或执行条件)信息以及候选小区的相关信息。
其中，候选小区的相关信息可以包括以下一项或多项：
1)，候选小区为UE分配的C-RNTI；
2)，接入候选小区所需的RACH资源信息；
3)，候选小区对应的索引信息，该索引信息用于标识候选小区。具体地，索引信息可以是该小区对应的测量标识measID和/或该小区对应的CHO配置标识CHO-ConfigId，或者其他表现形式，本实施对此不做限定；
4)，候选小区的小区全局标识(Cell Global Identification，CGI),或者，候选小区的演进的小区全局标识(Evolved Cell Global Identifier，ECGI)；
5)，候选小区的PCI；
6)，候选小区对应的频率信息，具体可以包括以下一项或多项：同步信号块(Synchronization Signal Block，SSB)的绝对频率(如absoluteFrequencySSB)、参考资源块(如公共资源块0 common RB0)的绝对频率位置(如absoluteFrequencyPointA)、频率带宽列表(如frequencyBandList)、或，子载波间隔SCS特定的载波列表(如scs-SpecificCarrierList)；
7)，候选小区对应的物理层配置参数；
8)，候选小区对应的媒体接入控制(medium access control，MAC)层配置参数；
9)，候选小区对应的无线链路控制(Radio Link Control，RLC)层配置参数；
10)，候选小区对应的分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层配置参数；
11)，候选小区对应的服务数据适配协议(Service Data Adaptation Protocol，SDAP)层配置参数；
12)，候选小区对应的RRC层配置参数等。
其中，CHO触发条件(或执行条件)信息可以包括CHO执行事件类型和相应的门限值。CHO执行事件类型可以包括A1事件、A2事件、A3事件、A4事件、A5事件、B1事件、B2事件或其他执行事件类型等。具体的，A1事件：服务小区的信号质量比某阈值好；A2事件：服务小区的信号质量比某阈值差；A3事件：邻区的信号质量比特殊小区SpCell(特殊小区可以包括主小区PCell或主辅小区PSCell)的信号质量高于某阈值；A4事件：邻区的信号质量比某阈值好；A5事件：特殊小区的信号质量低于某阈值1，邻区的信号质量高于某阈值2；B1事件：跨RAT(Radio Access Technology)邻区的信号质量比某阈值好；B2事件：PCell的信号质量低于阈值3，跨RAT邻区的信号质量高于阈值4。
比如，一个候选小区可以被配置一个或多个CHO的执行条件，例如，一个候选小区可以被配置一个执行事件类型，但是被配置至少一个门限值和/或至多两个不同的触发量(trigger quantity)，该触发量例如可以包括参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)、信号干扰噪声比(Signal to interference plus noise ratio，SINR)。再比如，一个候选小区还可以被配置至少一个执行事件类型、以及各执行事件类型相对应的门限值。不同的候选小区分别对应的CHO执行事件类型和/或执行事件类型对应的门限值可以相同，也可以不同，不做限定。
UE在接收到上述RRC消息后，根据该RRC消息，判断候选小区是否满足CHO的执行条件，将满足CHO的执行条件的候选小区作为目标小区。具体的，UE根据CHO配置信息进行CHO的执行条件是否满足的判断。作为一个示例，针对候选小区A，配置的CHO 执行事件类型是A3事件，且配置的对应的门限值为第一阈值(需要说明的是，对应不同的trigger quantity，第一阈值可能相同或不同)，则，当候选小区A的小区信号质量(信号质量包括RSRP、RSRQ、SINR中的一项或多项，例如，信号质量包括RSRP和RSRQ，或者，信号质量包括RSRP和SINR，或者其他，对此不作限定)比服务小区的小区信号质量高出第一阈值时，可以认为候选小区A满足CHO的执行条件，该候选小区A可以被确定为目标小区。作为又一个示例，针对候选小区B，配置A3事件，且配置两个trigger quantity，例如，RSRP和RSRQ，配置的对应RSRP的第一阈值为E，配置的对应RSRQ的第一阈值为F，则当候选小区A的RSRP比服务小区的RSRP高出E，且候选小区A的RSRQ比服务小区的RSRQ高出F时，可以认为候选小区A满足CHO的执行条件，该候选小区A可以被确定为目标小区。作为又一个示例，针对候选小区B，若配置的CHO执行事件类型是A5事件，且配置的对应的门限值为第二阈值、第三阈值，则当候选小区B的小区信号质量高于第二阈值，且服务小区的小区信号质量低于第三阈值时，可以认为候选小区B满足CHO的执行条件，该候选小区B可以被确定为目标小区。
针对CHO机制，可能会存在以下几种情形，下面分别说明。
情形1，UE确定出至少一个候选小区中的满足CHO的执行条件的目标小区后(该目标小区可以称为第一候选小区)(现有CHO机制中，UE在根据CHO配置信息首次确定出一个满足CHO的执行条件的目标小区后，不再判断其他候选小区是否满足CHO的执行条件)，启动定时器T1(T1可以是协议预定义的，或者，包含CHO配置信息的RRC消息中包含定时器T1的相关信息，如T1的有效时长)，且UE尝试接入或切换至该确定出的目标小区，例如，UE与确定出的目标小区进行随机接入过程。
该情形1又包括情形1.1或情形1.2。
情形1.1，若在T1有效期间内，随机接入成功完成，则UE给目标小区所属的网络设备发送RRC消息(如RRC重配置完成消息)，通知该网络设备条件切换完成。
情形1.2，若T1超时，UE未能成功接入至目标小区，则UE进行小区选择(如选择满足S准则的小区)。小区选择又分为以下情形1.2.1或情形1.2.2：
情形1.2.1，若选择出的小区是至少一个候选小区中的一个，则UE尝试切换至该小区(该小区可以称为第一小区)，例如，UE与该第一小区进行随机接入流程。
其中，该情形1.2.1进一步又可以分为以下情形1.2.1.1或情形1.2.1.2。
情形1.2.1.1，若UE与该第一小区的接入或切换成功，则认为CHO流程成功。
情形1.2.1.2，若UE与该第一小区的接入或切换不成功，则UE进行重建立流程。
情形1.2.2，若选择出的小区不属于至少一个候选小区，则UE进行重建立流程。
可选的，UE确定出满足CHO的执行条件的目标小区(即第一候选小区)后，可以跳过随机接入过程，即不执行随机接入过程。也即，UE确定出目标小区后，可以不执行随机接入过程，而是给目标网络设备发送RRC重配置完成消息(例如，如果上述包含CHO配置信息的RRC消息中包含RACH-less HO的相关信息，如TA信息、UL grant信息等，其中，RACH-less HO的相关信息是与至少一个候选小区对应的，则UE可以不与确定出的目标小区进行随机接入过程)。
情形2，在UE根据CHO配置信息确定出至少一个候选小区中的满足CHO的执行条件的目标小区(该目标小区可以称为第一候选小区)前，或者，在UE确定出目标小区(即 第一候选小区)后但还未成功切换至该目标小区前，源小区发生无线链路失败(Radio Link Failure，RLF)，则UE进行小区选择(如选择满足S准则的小区，其中S准则可以为现有的小区选择中的S准则，也可以为后续小区选择中的S准则，在此不予限定)。
小区选择又分为以下情形2.1或情形2.2：
情形2.1，若选择出的小区是至少一个候选小区中的一个，则UE尝试切换至该小区(该小区可以称为第一小区，比如，UE与该小区进行随机接入流程)，该情形2.1又可以包含以下情形2.1.1或情形2.1.2：
情形2.1.1，若UE与第一小区的接入或切换成功，则认为CHO流程成功；
比如，UE与该第一小区进行随机接入成功，则UE与该第一小区的接入或切换成功。进一步的，NR系统中，UE可以向该第一小区发送RRC重配置完成消息；LTE系统中，UE可以向该第一小区发送RRC连接重配置完成消息。
情形2.1.2，若UE与该小区(即第一小区)的接入或切换不成功，则UE进行重建立流程。
情形2.2，若选择出的小区不属于至少一个候选小区，则UE进行重建立流程。
情形3，CHO机制中，源网络设备可以保持与UE的RRC连接/数据传输，直至UE成功切换至确定出的满足CHO的执行条件的目标小区(该目标小区可以称为第一候选小区)(例如，直至UE给成功接入的目标小区发送RRC重配置完成消息或RRC连接重配置完成消息)。也就是说，网络在首次给UE发送了包含CHO配置信息的RRC消息后，后续还可以再给UE发送另一个RRC消息，例如，可以给UE发送传统的切换消息。
相应地，UE在根据CHO配置信息确定出满足CHO的执行条件的目标小区(即第一候选小区)前，如果UE接收到传统的切换消息，则UE停止CHO流程(如，UE停止从至少一个候选小区中尝试确定满足CHO的执行条件的目标小区的流程)，根据传统的切换消息，进行传统的切换流程。或者，如果在UE确定出第一候选小区后但还没有成功切换至该第一候选小区前，UE接收到传统的切换消息，则UE停止CHO流程(如，UE停止与确定出的第一候选小区的随机接入流程)，UE根据传统的切换消息，进行传统的切换流程。
该情形3又包括情形3.1或情形3.2。
情形3.1，如果传统的切换流程失败(例如，在T304有效期内，UE没有成功接入到传统切换消息所指示的目标小区，其中T304的相关信息，如T304的有效期包含在传统的切换消息中)，则UE进行小区选择(如选择满足S准则的小区)。小区选择又分为以下两种情形(情形3.1.1或情形3.1.2)：
情形3.1.1，若选择出的小区是至少一个候选小区中的一个，则UE尝试切换至该小区(该小区可以称为第一小区，比如，UE与该小区进行随机接入流程)，分为以下两种情形：
情形3.1.1.1，若UE与该小区(即第一小区)的接入或切换成功，则认为CHO流程成功；
比如，UE与该第一小区进行随机接入成功，则UE与该第一小区的接入或切换成功。进一步的，NR系统中，UE可以向该第一小区发送RRC重配置完成消息；LTE系统中，UE可以向该第一小区发送RRC连接重配置完成消息。
情形3.1.1.2，若UE与该第一小区的接入或切换不成功，则UE进行重建立流程。
情形3.1.2，若选择出的小区不属于至少一个候选小区，则UE进行重建立流程。
情形3.2，如果传统的切换流程成功，则UE与包含在切换消息中的目标小区的接入或切换成功。
三、MRO机制
无论是在传统切换机制还是在条件切换机制中，切换参数(如，目标小区的配置信息、至少一个候选小区的配置信息等)是影响到传统切换、条件切换成功率的关键因素之一。传统切换机制中，为了优化切换参数，引入了MRO机制，即UE上报传统切换过程中的相关信息，进一步地，网络设备可以根据UE上报的该相关信息进行切换参数的优化。MRO机制下，在传统切换流程中，UE一般在以下两种场景下上报切换过程中的相关参数：
1)，UE接收切换消息失败，发生RLF；
2)，接收切换消息成功，但是未能成功切换至目标小区或者切换至目标小区后很快发生RLF。其中，切换消息中包含目标小区的配置信息，具体内容不再赘述。
具体的，现有MRO的记录场景(主要针对传统切换流程)包括：
1)，UE没有成功接收到切换消息，发生RLF，然后UE在新小区重建立成功，该情形下，UE记录并上报给新小区的信息包括以下部分或全部：失败原因值(即为RLF)，源小区的信息(例如包含源小区的小区标识信息、源小区对应的信号质量)，重建立小区(即新小区)的信息(例如包含重建立小区的小区标识信息、重建立小区对应的信号质量)，发生RLF到上报的时间等；其中，重建立小区可以是目标小区或其他小区，对此不做限定。
2)，UE成功收到了切换消息，在目标小区切换失败，或者在目标小区切换成功后很快发生RLF(如目标小区信号质量不稳定，UE切换至该目标小区后，该小区的信号质量又变得很差)，UE发起重建立流程，其中，UE发起重建立的小区(可以称为重建立小区)可以是源小区或目标小区或其他小区，对此不做限定。该情形下，UE记录并上报给新小区的信息包括以下部分或全部：失败原因值(即为切换失败HOF)，源小区的信息(例如包含源小区的小区标识信息、源小区对应的信号质量)，目标小区的信息(例如包含目标小区的小区标识信息、目标小区对应的信号质量)，重建立小区的信息(例如包含重建立小区的小区标识信息、重建立小区对应的信号质量)，收到切换消息到发生失败的时间段以及发生失败到上报的时间段等。
具体的，上述小区(如源小区、目标小区、重建立小区)的信息可以包括：小区的标识，和/或，小区对应的信号质量(本申请全文中提及到的信号质量可以包含小区信号质量和/或属于该小区的至少一个波束的信号质量，信号质量包括RSRP和/或RSRQ和/或SINR，信号质量可以是基于同步信号块(Synchronization Signal Block，SSB)和/或信道状态信息参考信号(Channel status information Reference Signal，CSI-RS)的无线资源管理(Radio Resource Management，RRM)测量所得到的测量结果)；其中，小区的标识可以包括以下至少一种：PCI、CGI、ECGI、或，该小区所对应的频点信息。
一种示例，UE向第一网络设备发送指示信息，该指示信息用于指示UE记录了RLF或HOF的相关信息，具体包含的内容可以参考上文，不再赘述。以NR系统举例，例如，该指示信息可以包含在UE向第一网络设备发送的RRC建立完成消息、或RRC重建立完成消息、或RRC恢复完成消息、或RRC重配置完成消息中，不做限定。第一网络设备向UE发送请求消息(例如，该请求消息可以是用户信息请求(UEInformationRequest)消息)， UE在接收到第一网络设备发送的该请求消息后(向第一网络设备上报UE记录的相应信息(例如，UE向第一网络设备发送用户信息响应(UEInformationResponse)消息，该UEInformationResponse消息中可以包含UE记录的相应信息，如RLF或HOF的相关信息)。其中，第一网络设备可以是源小区所属的网络设备或目标小区所属的网络设备或重建立小区所属的网络设备，或其他网络设备，对此不作限定。第一网络设备收到UE上报的信息后，可以将UE上报的信息发送给其他网络设备。比如，第一网络设备为源小区所属的网络设备，源小区所属的网络设备可以将UE上报的部分或全部信息发送给目标小区所属的网络设备和/或重建立小区所属的网络设备；目标小区所属的网络设备或重建立小区所属的网络设备或源小区所属的网络设备根据接收到的部分或全部信息进行相应参数的调整。再比如，第一网络设备为目标小区所属的网络设备，目标小区所属的网络设备可以将UE上报的部分或全部信息发送给源小区所属的网络设备和/或重建立小区所属的网络设备，可选地，源小区所属的网络设备将接收到的信息中的部分或全部发送给重建立小区所属的网络设备；源小区所属的网络设备或目标小区所属的网络设备或重建立小区所属的网络设备根据接收到的部分或全部信息进行相应参数的调整。再比如，第一网络设备为重建立小区所属的网络设备，重建立小区所属的网络设备可以将UE上报的部分或全部信息发送给源小区所属的网络设备和/或目标小区所属的网络设备，可选地，源小区所属的网络设备将接收到的信息中的部分或全部发送给目标小区所属的网络设备；源小区所属的网络设备或目标小区所属的网络设备或重建立小区所属的网络设备根据接收到的部分或全部信息进行相应参数的调整。
上述移动鲁棒性优化机制只考虑针对传统切换机制中产生的相关信息进行记录、上报，然而对于上述条件切换流程中产生的相关信息，目前还没有相应的记录、上报方法。如上述情形1至情形3所提到的各种场景中产生的相关信息，也需要UE考虑进行记录、上报，从而网络可以根据这些相关信息，进行条件切换机制以及传统切换机制的相关参数的调整、优化，进而提高系统可靠性。
需要说明的是，本申请实施例中，以下任意地方提到的标识信息可以是CGI、ECGI、PCI、频点信息中的至少一个。频点信息包括但不限于以下中的一项或多项：SSB绝对频率(absoluteFrequencySSB)、PointA绝对频率(absoluteFrequencyPointA)、频率带宽列表(frequencyBandList)、子载波间隔(subcarrier spacing，SCS)特定的载波列表(scs-SpecificCarrierList)。
本申请实施例中，以下任意地方提到的索引信息可以是该小区对应的测量标识(measID)，或该小区对应的CHO-ConfigId，或者其他表现形式，本实施对此不做限定，该索引信息可以用于标识小区即可。
首先，下面介绍本申请提供CHO流程中的相关信息的记录方法。下面分场景说明。
需要说明的是，以下各种场景中，UE在记录信息时，各个信息可以记录在相同或不同的变量或信元中，本申请对此不做限定。以下各种场景的前提是：UE从源小区所属的网络设备(本申请后续称为第二网络设备)接收到至少一个候选小区的CHO配置信息(可以携带于RRC重配置消息或RRC连接重配置消息)，其中，至少一个候选小区的CHO配置信息的具体内容可以参考前述描述，这里不赘述。
场景一：当UE的源小区发生RLF、或传统切换失败、或UE与满足CHO的执行条件的候选小区(称为第一候选小区)的接入或切换失败，UE进行小区选择，如果UE选择出的小区属于至少一个候选小区(如将该小区称为第一小区)，且UE成功接入或切换至该第一小区。
其中，当UE的源小区发生RLF，如果UE进行小区选择后选择出的小区属于至少一个候选小区(即该小区为第一小区)，且UE成功接入或切换至该小区，对应上述情形2.1.1。
当传统切换失败，如果UE进行小区选择后选择出的小区属于至少一个候选小区(即该小区为第一小区)，且UE成功接入或切换至该小区，对应上述情形3.1.1.1。
当UE与满足CHO的执行条件的候选小区(称为第一候选小区)的接入或切换失败，如果UE进行小区选择后选择出的小区属于至少一个候选小区(即该小区为第一小区)，且UE成功接入或切换至该第一小区，对应上述情形1.2.1.1。
该场景一下，以NR系统为例具体说明，UE可以在相应的变量或信元中记录以下中的一项或多项：
1)成功接入或切换至所述第一小区时对应的相关信息。例如，可以包含以下中的一项或多项：第一小区的标识信息、第一小区对应的索引信息、UE成功接入或切换至所述第一小区时所述第一小区对应的信号质量、成功原因值(如，原因值为“第一小区满足小区选择准则(或满足S准则)且接入或切换成功”)、或，第一小区满足小区选择准则(或满足S准则)且接入或切换成功的指示信息。
2)源小区对应的相关信息。例如，可以包含以下中的一项或多项：该源小区的小区标识信息、该源小区对应的信号质量。可选的，当源小区发生RLF时，UE还可以记录以下信息中的一项或多项：失败原因值(如，原因值为“源小区发生RLF”)、该源小区发生RLF的指示信息、或，源小区发生RLF时至少一个候选小区对应的信号质量。
3)可选的，当传统切换失败时，UE还可以记录传统切换失败时对应的相关信息。例如，可以包含以下中的一项或多项：目标小区(切换消息中包含该目标小区的配置信息)的小区标识信息、该目标小区对应的信号质量、失败原因值(如，原因值为“HOF”或“T304超时”)、传统切换失败(或T304超时)的指示信息、或，传统切换失败(或T304超时)时的至少一个候选小区对应的信号质量。
4)可选的，当UE与上述第一候选小区的接入或切换失败时，UE还可以记录UE与第一候选小区的接入或切换失败时对应的相关信息。例如，可以包含以下中的一项或多项：第一候选小区的小区标识信息、第一候选小区对应的索引信息、第一候选小区对应的CHO配置信息、UE接入或切换至第一候选小区失败时第一候选小区对应的信号质量、失败原因值(如，原因值为“满足CHO的执行条件但是UE接入或切换失败”)、第一候选小区满足CHO的执行条件但是UE接入或切换失败的指示信息、UE接入或切换至第一候选小区失败时其他候选小区(即上述至少一个候选小区中除第一候选小区之外的候选小区中的部分或全部候选小区)对应的信号质量、所述第一候选小区对应的CHO的执行条件满足时第一候选小区对应的信号质量、或，所述第一候选小区对应的CHO的执行条件满足时其他候选小区(即上述至少一个候选小区中除第一候选小区之外的候选小区中的部分或全部候选小区)对应的信号质量。
5)测量报告上报时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、 UE确定出所述第一小区时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、UE成功接入所述第一小区时(如与第一小区的RACH成功时，具体的，如基于竞争的随机接入过程中，UE收到MSG4(如竞争冲突解决消息)时；或，基于非竞争的随机接入过程中，UE收到MSG2(如随机接入响应消息)时)所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量、UE收到包含条件切换配置信息的RRC消息(如RRC重配置消息、或RRC连接重配置消息)时至少一个候选小区中的部分或全部候选小区对应的信号质量、或，UE向第一小区发送RRC重配置完成消息(LTE系统中，UE向第一小区发送RRC连接重配置完成消息)时至少一个候选小区中的部分或全部候选小区对应的信号质量。
6)时间信息。
比如，在源小区发生RLF的情形下，UE可以记录以下信息中的一项或多项：
时间段1，所述时间段1为UE收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到UE确定出所述第一小区的时间段，
时间段3，所述时间段3为UE确定出所述第一小区到UE成功接入或切换至所述第一小区的时间段，
时间段4，所述时间段4为UE成功接入或切换至所述第一小区到UE上报所述时间段4的时间段。成功接入或切换可以是随机接入成功或RRC重配置完成消息发送成功。换句话说，时间段3可以为UE确定出所述第一小区到UE与所述第一小区的随机接入成功的时间段，或者，时间段3可以为UE确定出所述第一小区到UE发送RRC重配置完成消息的时间段；时间段4可以为UE与所述第一小区的随机接入成功到UE上报所述时间段4的时间段，或者，时间段4可以为UE发送RRC重配置完成消息到UE上报所述时间段4的时间段。
所述时间段1至所述时间段4中任意两个或两个以上的连续时间段构成的时间段。比如时间段1和时间段2可以构成一个新的时间段，时间段3和时间段4可以构成一个新的时间段；再比如时间段2和时间段3可以构成一个新的时间段；再比如时间段1至时间段3也可以构成一个新的时间段，不再一一举例。
需要说明的是，所述源小区发生无线链路失败的时刻与UE确定出所述第一小区的时刻可能相等或不等。当两个时刻相等时，时间段2为“0”或UE无需记录时间段2，此时，时间段1可以替换为“所述时间段1为UE收到所述RRC重配置消息到UE确定出所述第一小区的时间段”，时间段3可以替换为“所述时间段3为所述源小区发生无线链路失败到UE成功接入或切换至所述第一小区的时间段”。
需要说明的是，以上时间段1至时间段4，或根据时间段1至时间段4得到的时间段，在具体实现中，可以是：在源小区发生RLF时，记录以下一个或多个时间段：时间段1、时间段2、时间段3、及根据时间段1至时间段3中任意两个或两个以上的连续时间段得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段4时(例如，场景一中，当UE成功接 入/切换至第一小区时，例如，UE向第一小区发送RRC重配置完成消息时)，记录上述时间段4、和/或记录时间段3与时间段4构成的时间段、和/或记录根据时间段X至时间段3构成的新时间段与时间段4相结合得到的时间段，其中X为1至2中的任意取值，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
再比如，在发生传统失败的情形下，UE可以记录以下信息中的一项或多项：
时间段5，所述时间段5为UE收到所述RRC重配置消息到UE收到传统切换消息的时间段，
时间段6，所述时间段6为UE收到传统切换消息到传统切换失败的时间段，
时间段7，所述时间段7为传统切换失败到UE确定出所述第一小区的时间段，
时间段8，所述时间段8为UE确定出所述第一小区到UE成功接入所述第一小区的时间段，
时间段9，所述时间段9为UE成功接入或切换至所述第一小区到UE上报所述时间段9的时间段。成功接入或切换至可以是随机接入成功或RRC重配置完成消息发送成功。换句话说，时间段8可以为UE确定出所述第一小区到UE与所述第一小区的随机接入成功的时间段，或者，时间段8可以为UE确定出所述第一小区到UE发送RRC重配置完成消息的时间段；时间段9可以为UE与所述第一小区的随机接入成功到UE上报所述时间段9的时间段，或者，时间段9可以为UE发送RRC重配置完成消息到UE上报所述时间段9的时间段。或，
所述时间段5至所述时间段9中任意两个或两个以上的连续时间段构成的时间段。
需要说明的是，传统切换失败的时刻与UE确定出所述第一小区的时刻可能相等或不等。当两个时刻相等时，时间段7为“0”或UE无需记录时间段7，此时，时间段6可以替换为“所述时间段6为UE收到传统切换消息到UE确定出所述第一小区的时间段”，时间段8可以替换为“所述时间段8为传统切换失败到UE成功接入所述第一小区的时间段”。
需要说明的是，以上时间段5至时间段9，或根据时间段5至时间段9得到的时间段，在具体实现中，可以是：在传统切换失败发生时，记录以下一个或多个时间段：时间段5、时间段6、时间段7、时间段8、及根据时间段5至时间段8中任意两个或两个以上的连续时间段得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段9时(例如，场景一中，当UE成功接入/切换至第一小区时，例如，UE向第一小区发送RRC重配置完成消息时)，记录上述时间段9、和/或记录时间段8与时间段9构成的时间段、和/或记录根据时间段X至时间段8构成的新时间段与时间段9相结合得到的时间段，其中X为5至7中的任意取值，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
再比如，在UE与满足CHO的执行条件的候选小区(即第一候选小区)的接入或切换失败的情形下，UE可以记录以下信息中的一项或多项：
时间段10，所述时间段10为UE收到所述RRC重配置消息到UE确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段11，所述时间段11为UE确定出满足条件切换的执行条件的所述第一候选小区到UE与所述第一候选小区接入失败的时间段，
时间段12，所述时间段12为UE与所述第一候选小区接入失败到UE确定出所述第一小区的时间段，
时间段13，所述时间段13为UE确定出所述第一小区到UE成功接入或切换至所述第一小区的时间段。成功接入或切换至可以是随机接入成功或RRC重配置完成消息发送成功。换句话说，时间段13可以为UE确定出所述第一小区到UE与所述第一小区的随机接入成功的时间段，或者，时间段13可以为UE确定出所述第一小区到UE发送RRC重配置完成消息的时间段。
时间段14，所述时间段14为UE成功接入或切换至所述第一小区到UE上报所述时间段14的时间段。成功接入或切换至可以是随机接入成功或RRC重配置完成消息发送成功。即时间段14可以为UE与所述第一小区的随机接入成功到UE上报所述时间段14的时间段，或者，时间段14可以为UE发送RRC重配置完成消息到UE上报所述时间段14的时间段。或，
所述时间段10至所述时间段14中任意两个或两个以上的连续时间段构成的时间段。
需要说明的是，UE与所述第一候选小区接入失败的时刻与UE确定出所述第一小区的时刻可能相等或不等。当两个时刻相等时，时间段12为“0”或UE无需记录时间段12，此时，时间段11可以替换为“所述时间段11为UE确定出满足条件切换的执行条件的所述第一候选小区到UE确定出所述第一小区的时间段”，时间段13可以替换为“所述时间段13为UE与所述第一候选小区接入失败到UE成功接入或切换至所述第一小区的时间段”。
需要说明的是，以上时间段10至时间段14，或根据时间段10至时间段14得到的时间段，在具体实现中，可以是：在UE与满足CHO的执行条件的候选小区(即第一候选小区)的接入或切换失败时，记录以下一个或多个时间段：时间段10、时间段11、时间段12、时间段13、及根据时间段10至时间段13中任意两个或两个以上的连续时间段得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段14时(例如，场景一中，当UE成功接入/切换至第一小区时，例如，UE向第一小区发送RRC重配置完成消息时)，记录上述时间段14、和/或记录时间段13与时间段14构成的时间段、和/或记录根据时间段X至时间段13构成的新时间段与时间段14相结合得到的时间段，其中X为10至12中的任意取值，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
该场景一下，UE在向第一小区(或第一小区所属的网络设备)发送的RRC重配置完成消息中包含指示信息，该指示信息用于表示UE记录了上述1)至6)信息中的一项或多项。
场景二：UE接收到包含CHO配置信息的RRC消息后，确定出满足CHO的执行条件的候选小区(称为第一候选小区)，且UE与第一候选小区的接入或切换成功。
该场景对应上述情形1.1。
该场景二下，以NR系统为例具体说明，UE可以在相应的变量或信元中记录以下中的一项或多项：
1)成功接入或切换至所述第一候选小区时对应的相关信息，例如，可以包含以下中的一项或多项：第一候选小区的标识信息、第一候选小区对应的索引信息、UE成功接入或切换所述第一候选小区时所述第一候选小区对应的信号质量、成功原因值(如，原因值为“该小区满足CHO的执行条件且接入或切换成功”)、该第一候选小区满足CHO的执行条件且接入或切换成功的指示信息、或，UE成功接入或切换至第一候选小区时(如与第一候选小区的RACH成功时，具体的，如基于竞争的随机接入过程中，UE收到MSG4(如竞争冲突解决消息)时；或，基于非竞争的随机接入过程中，UE收到MSG2(如随机接入响应消息)时)的所述至少一个候选小区中除第一候选小区之外的其他候选小区中的部分或全部候选小区对应的信号质量。“UE成功接入或切换至第一候选小区时”可以替换为“UE与第一候选小区的随机接入成功时”。
2)源小区对应的相关信息。例如，可以包含以下中的一项或多项：该源小区的小区标识信息、或，该源小区对应的信号质量。
3)测量报告上报时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、UE确定出所述第一候选小区时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、UE收到包含条件切换配置信息的RRC消息(如RRC重配置消息、或RRC连接重配置消息)时至少一个候选小区中的部分或全部候选小区对应的信号质量、或，UE向第一候选小区发送RRC重配置完成消息(LTE系统中，UE向第一候选小区发送RRC连接重配置完成消息)时至少一个候选小区中的部分或全部候选小区对应的信号质量。
4)时间信息。比如，包含以下中的一项或多项：
时间段1，所述时间段1为收到包含CHO配置信息的RRC消息到确定出满足CHO的执行条件的第一候选小区的时间段，
时间段2，所述时间段2为确定出满足CHO的执行条件的第一候选小区到UE与第一候选小区的接入或切换成功的时间段。
时间段3，所述时间段3为UE成功接入或切换所述第一候选小区到UE上报所述时间段3的时间段。成功接入或切换至可以是随机接入成功或RRC重配置完成消息发送成功。换句话说，时间段2可以为UE确定出所述第一候选小区到UE与所述第一候选小区的随机接入成功的时间段，或者，时间段2可以为UE确定出所述第一候选小区到UE发送RRC重配置完成消息的时间段；时间段3可以为UE与所述第一候选小区的随机接入成功到UE上报所述时间段3的时间段，或者，时间段3可以为UE发送RRC重配置完成消息到UE上报所述时间段3的时间段。或，
所述时间段1至所述时间段3中任意两个或两个以上的连续时间段构成的时间段。
需要说明的是，以上时间段1至时间段3，或根据时间段1至时间段3得到的时间段，在具体实现中，可以是：在源小区发生RLF时，记录以下一个或多个时间段：时间段1、时间段2、及根据时间段1至时间段2得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段3时(例如，场景二中，当UE成功接入/切换至第一候选小区时，例如，UE向第一候选小 区发送RRC重配置完成消息时)，记录上述时间段3、和/或记录时间段2与时间段3构成的时间段、和/或记录时间段1至时间段3构成的时间段，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
该场景二下，UE在向第一候选小区(或第一候选小区所属的网络设备)发送的RRC重配置完成消息中包含指示信息，该指示信息用于表示UE记录了上述1)-4)信息中的一项或多项。
场景三：当UE的源小区发生RLF、或传统切换失败、或UE与满足CHO的执行条件的候选小区(称为第一候选小区)的接入或切换失败，如果UE进行小区选择后选择出的小区属于候选小区，但UE与该小区(称为第一小区)接入或切换失败。当UE与第一小区的接入或切换失败，UE发起RRC重建立流程，重建立流程可能成功或失败，当重建立流程失败时，UE进入空闲态，且UE进行RRC建立流程。
其中，当UE的源小区发生RLF，如果UE进行小区选择后选择出的小区属于候选小区(该小区即为第一小区)，但UE与该第一小区接入或切换失败，对应上述情形2.1.2。当传统切换失败，如果UE进行小区选择后选择出的小区属于候选小区(该小区即为第一小区)，但UE与该第一小区接入或切换失败，对应上述情形3.1.1.2。当UE与满足CHO的执行条件的候选小区(称为第一候选小区)的接入或切换失败，如果UE进行小区选择后选择出的小区属于候选小区(该小区即为第一小区)，但UE与该第一小区接入或切换失败，对应上述情形1.2.1.2。
该场景三下，以NR系统为例具体说明，UE可以在相应的变量或信元中记录以下中的一项或多项：
1)UE与选择出的第一小区接入或切换失败时对应的相关信息，例如，可以包含以下中的一项或多项：第一小区的标识信息、第一小区对应的索引信息、第一小区对应的CHO配置信息、UE接入或切换至所述第一小区失败时所述第一小区对应的信号质量、失败原因值(该失败原因值可以是新定义的，如，原因值为“该小区满足小区选择准则(或满足S准则)但接入或切换失败”，或重用现有的原因值，如“HOF”，不做限定)、该小区满足小区选择准则(或满足S准则)但接入或切换失败的指示信息、或，UE接入或切换至所述第一小区失败时其他候选小区(即上述至少一个候选小区中除第一小区之外的候选小区中的部分或全部候选小区)对应的信号质量。
2)源小区对应的相关信息，可以参考上述场景一的2)，不赘述。
3)可选的，当传统切换失败时，UE还可以记录传统切换失败时对应的相关信息，可以参考上述场景一的3)，不赘述。
4)可选的，当UE与上述第一候选小区的接入或切换失败时时，UE还可以记录UE与第一候选小区的接入或切换失败时对应的相关信息。可以参考上述场景一的4)，不赘述。
5)发起重建立流程时对应的相关信息(因为UE与确定出的第一小区的接入或切换失败时，UE发起重建立流程)。例如，可以包含以下中的一项或多项：重建立小区的小区标识信息、执行重建立流程时重建立小区对应的信号质量、重建立原因值(该原因值可以是新定义的，如，原因值为“建立与满足小区选择准则(或满足S准则)的CHO候选小区的接入或切换失败”，或重用现有的原因值，如“HOF”，不做限定)、或，UE与满足小区 选择准则(或满足S准则)的第一小区接入或切换失败的指示信息。
6)测量报告上报时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、UE确定出所述第一小区时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、UE发起重建立流程时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、UE收到包含条件切换配置信息的RRC消息(如RRC重配置消息、或RRC连接重配置消息)时至少一个候选小区中的部分或全部候选小区对应的信号质量、或，重建立流程成功时至少一个候选小区中的部分或全部候选小区对应的信号质量。
7)时间信息。
比如，在源小区发生RLF的情形下，UE可以记录以下信息中的一项或多项：
时间段1，所述时间段1为UE收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到UE确定出第一小区的时间段，
时间段3，所述时间段3为UE确定出第一小区到UE接入或切换至所述第一小区失败的时间段，
时间段4，所述时间段4为UE接入或切换至所述第一小区失败到UE确定出重建立小区的时间段，
时间段5，所述时间段5为UE确定出重建立小区到UE上报所述时间段5的时间段，或，
所述时间段1至所述时间段5中任意两个或两个以上的连续时间段构成的时间段，比如时间段1和时间段2可以构成一个新的时间段，再比如时间段1至时间段3也可以构成一个新的时间段，不再一一举例。
需要说明的是，所述源小区发生无线链路失败的时刻与UE确定出所述第一小区的时刻可能相等或不等。当两个时刻相等时，时间段2为“0”UE无需记录时间段2，此时，时间段1可以替换为“所述时间段1为UE收到所述RRC重配置消息到UE确定出所述第一小区的时间段”，时间段3可以替换为“所述时间段3为所述源小区发生无线链路失败到UE接入或切换至所述第一小区失败的时间段”。
需要说明的是，UE接入或切换至所述第一小区失败的时刻与UE确定出重建立小区的时刻可能相等或不等。当两个时刻相等时，时间段4为“0”或UE无需记录时间段4，此时，时间段3可以替换为“所述时间段3为UE确定出第一小区到UE确定出重建立小区的时间段”，时间段5可以替换为“所述时间段5为UE接入或切换至所述第一小区失败到UE上报所述时间段5的时间段”。
需要说明的是，以上时间段1至时间段5，或根据时间段1至时间段5得到的时间段，在具体实现中，可以是：在源小区发生RLF时，记录以下一个或多个时间段：时间段1、时间段2、时间段3、时间段4、及根据时间段1至时间段4中任意两个或两个以上的连续时间段得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段5时(例如，场景三中，当UE重建立成功或RRC建立成功时，例如，UE向重建立小区发送RRC重建立完成消息时或 UE向RRC建立过程中的小区发送RRC建立完成消息时)，记录上述时间段5、和/或记录时间段4与时间段5构成的时间段、和/或记录根据时间段X至时间段4构成的新时间段与时间段5相结合得到的时间段，其中X为1至3中的任意取值，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
再比如，在发生传统切换失败的情形下，UE可以记录以下信息中的一项或多项：
时间段6，所述时间段6为UE收到所述RRC重配置消息到UE收到传统切换消息的时间段，
时间段7，所述时间段7为UE收到传统切换消息到传统切换失败的时间段，
时间段8，所述时间段8为传统切换失败到UE确定出所述第一小区的时间段，
时间段9，所述时间段9为UE确定出所述第一小区到UE接入或切换至所述第一小区失败的时间段，
时间段10，所述时间段10为UE接入或切换至所述第一小区失败到UE确定重建立小区的时间段，
时间段11，所述时间段11为UE确定出重建立小区到UE上报所述时间段11的时间段。或，
所述时间段6至所述时间段11中任意两个或两个以上的连续时间段构成的时间段。
需要说明的是，传统切换失败的时刻与UE确定出所述第一小区的时刻可能相等或不等。当两个时刻相等时，时间段8为“0”或UE无需记录时间段8，此时，时间段7可以替换为“所述时间段7为UE收到传统切换消息到UE确定出所述第一小区的时间段”，时间段9可以替换为“所述时间段9为传统切换失败到UE接入或切换至所述第一小区失败的时间段”。
需要说明的是，UE接入或切换至所述第一小区失败的时刻与UE确定出重建立小区的时刻可能相等或不等。当两个时刻相等时，时间段10为“0”或UE无需记录时间段10，此时，时间段9可以替换为“所述时间段9为UE确定出所述第一小区到UE确定出重建立小区的时间段”，时间段10可以替换为“所述时间段10为UE接入或切换至所述第一小区失败到UE上报所述时间段10的时间段”。
需要说明的是，以上时间段6至时间段11，或根据时间段6至时间段11得到的时间段，在具体实现中，可以是：在传统切换失败发生时，记录以下一个或多个时间段：时间段6、时间段7、时间段8、时间段9、时间段10、及根据时间段6至时间段10中任意两个或两个以上的连续时间段得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段11时(例如，场景三中，当UE重建立成功或RRC建立成功时，例如，UE向重建立小区发送RRC重建立完成消息时或UE向RRC建立过程中的小区发送RRC建立完成消息时)，记录上述时间段11、和/或记录时间段10与时间段11构成的时间段、和/或记录根据时间段X至时间段10构成的新时间段与时间段11相结合得到的时间段，其中X为6至9中的任意取值，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
再比如，在UE与满足CHO的执行条件的第一候选小区的接入或切换失败的情形下，UE可以记录以下信息中的一项或多项：
时间段12，所述时间段12为UE收到所述RRC重配置消息到UE确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段13，所述时间段13为UE确定出满足条件切换的执行条件的所述第一候选小区到UE与所述第一候选小区接入或切换失败的时间段，
时间段14，所述时间段14为UE与所述第一候选小区接入或切换失败到UE确定出所述第一小区的时间段，
时间段15，所述时间段15为UE确定出所述第一小区到UE接入或切换所述第一小区失败的时间段，
时间段16，所述时间段16为UE接入或切换至所述第一小区失败到UE确定出重建立小区的时间段，
时间段17，所述时间段17为UE确定出重建立小区到UE上报所述时间段17的时间段，或，
所述时间段12至所述时间段17中任意两个或两个以上的连续时间段构成的时间段。
需要说明的是，UE与所述第一候选小区接入失败的时刻与UE确定出所述第一小区的时刻可能相等或不等。当两个时刻相等时，时间段14为“0”或UE无需记录时间段14，此时，时间段13可以替换为“所述时间段13为UE确定出满足条件切换的执行条件的所述第一候选小区到UE确定出所述第一小区的时间段”，时间段15可以替换为“所述时间段15为UE与所述第一候选小区接入失败到UE接入所述第一小区失败的时间段”。
需要说明的是，UE接入或切换至所述第一小区失败的时刻与UE确定出重建立小区的时刻可能相等或不等。当两个时刻相等时，时间段16为“0”或UE无需记录时间段16，此时，时间段15可以替换为“所述时间段15为UE确定出所述第一小区到UE确定出重建立小区的时间段”，时间段17可以替换为“所述时间段17为UE接入或切换至所述第一小区失败到UE上报所述时间段17的时间段”。
需要说明的是，以上时间段12至时间段17，或根据时间段12至时间段17得到的时间段，在具体实现中，可以是：在UE与满足CHO的执行条件的候选小区(即第一候选小区)的接入或切换失败时，记录以下一个或多个时间段：时间段12、时间段13、时间段14、时间段15、时间段16、及根据时间段12至时间段16中任意两个或两个以上的连续时间段得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段17时(例如，场景三中，当UE重建立成功或RRC建立成功时，例如，UE向重建立小区发送RRC重建立完成消息时或UE向RRC建立过程中的小区发送RRC建立完成消息时)，记录上述时间段17、和/或记录时间段16与时间段17构成的时间段、和/或记录根据时间段X至时间段16构成的新时间段与时间段17相结合得到的时间段，其中X为12至15中的任意取值，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
该场景三下，如果重建立成功，则UE在向重建立小区(或重建立小区所属的网络设 备)发送的RRC重建立完成消息中包含指示信息，该指示信息用于表示UE记录了上述1)至7)信息中的一项或多项；如果重建立失败，则UE在向RRC建立过程中的小区(或该小区所属的网络设备)发送的RRC建立完成消息中包含指示信息，该指示信息用于表示UE记录了上述1)至7)信息中的一项或多项。
场景四：当UE的源小区发生RLF、或传统切换失败、或UE与满足CHO的执行条件的候选小区(称为第一候选小区)的接入或切换失败，如果UE进行小区选择后选择出的小区不属于候选小区，则此时，UE进行RRC重建立流程，具体的，UE可能重建立成功或重建立失败，如果重建立失败，UE进入空闲态，且UE进行RRC建立流程。
当UE的源小区发生RLF，如果UE进行小区选择后选择出的小区不属于候选小区，对应上述情形2.2。
当传统切换失败，如果UE进行小区选择后选择出的小区不属于候选小区，对应上述情形3.1.2。
当UE与满足CHO的执行条件的候选小区(称为第一候选小区)的接入或切换失败，如果UE进行小区选择后选择出的小区(例如，该小区为第二小区)不属于候选小区，对应上述情形1.2.2。
该场景四下，以NR系统为例具体说明，UE可以在相应的变量或信元中记录以下中的一项或多项：
1)UE发起重建立流程时对应的相关信息，例如，可以包含以下中的一项或多项：重建立小区(即UE进行小区选择后选择出的小区)的小区标识信息、执行重建立流程时重建立小区对应的信号质量、重建立原因值(该原因值可以是新定义的，如，原因值为“UE进行小区选择后选择出的小区虽满足小区选择准则(或满足S准则)但不属于至少一个候选小区”，或重用现有的原因值，不做限定)、UE进行小区选择后选择出的小区虽满足小区选择准则(或满足S准则)但不属于至少一个候选小区的指示信息、或，UE执行重建立流程时至少一个候选小区中的部分或全部候选小区对应的信号质量。
2)至4)，可以参考上述场景三中的2)至4)，不赘述。
5)测量报告上报时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、UE收到包含条件切换配置信息的RRC消息(如RRC重配置消息、或RRC连接重配置消息)时至少一个候选小区中的部分或全部候选小区对应的信号质量、RRC重建立失败时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、RRC建立流程成功时所述至少一个候选小区中的部分或全部候选小区对应的信号质量、或，RRC重建立成功时至少一个候选小区中的部分或全部候选小区对应的信号质量。
6)时间信息。
比如，在源小区发生RLF的情形下，UE可以记录以下信息中的一项或多项：
时间段1，所述时间段1为UE收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到UE确定出第二小区的时间段，其中，“UE确定出第二小区”可以替换为“UE进行重建立”，即，所述时间段2可以为所述源小区发生无线链路失败到UE进行重建立的时间段。
时间段3，所述时间段3为UE确定出第二小区到UE上报所述时间段3的时间段，其 中，“UE确定出第二小区”可以替换为“UE进行重建立”，即，所述时间段3可以为UE进行重建立到UE上报所述时间段3的时间段。或，
所述时间段1至所述时间段3中任意两个或两个以上的连续时间段构成的时间段，比如时间段1和时间段2可以构成一个新的时间段，再比如时间段1至时间段3也可以构成一个新的时间段，不再一一举例。
需要说明的是，所述源小区发生无线链路失败的时刻与UE确定出所述第二小区的时刻可能相等或不等。当两个时刻相等时，时间段2为“0”或UE无需记录时间段2，此时，时间段1可以替换为“所述时间段1为UE收到所述RRC重配置消息到UE确定出所述第二小区的时间段”，时间段3可以替换为“所述时间段3为所述源小区发生无线链路失败到UE上报所述时间段3的时间段”。
需要说明的是，以上时间段1至时间段3，或根据时间段1至时间段3得到的时间段，在具体实现中，可以是：在源小区发生RLF时，记录以下一个或多个时间段：时间段1、时间段2、及根据时间段1和时间段2得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段3时(例如，场景四中，当UE重建立成功或RRC建立成功时，例如，UE向重建立小区发送RRC重建立完成消息时或UE向RRC建立过程中的小区发送RRC建立完成消息时)，记录上述时间段3、和/或记录时间段2与时间段3构成的时间段、和/或记录根据时间段1、时间段2、时间段3构成的时间段，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
再比如，在发生传统切换失败的情形下，UE可以记录以下信息中的一项或多项：
时间段4，所述时间段4为UE收到所述RRC重配置消息到UE收到传统切换消息的时间段，
时间段5，所述时间段6为UE收到传统切换消息到传统切换失败的时间段，
时间段6，所述时间段6为传统切换失败到UE确定出第二小区的时间段，其中，“UE确定出第二小区”可以替换为“UE进行重建立”，即，所述时间段7可以为传统切换失败到UE进行重建立的时间段。
时间段7，所述时间段7为UE确定出第二小区到UE上报所述时间段7的时间段，其中，“UE确定出第二小区”可以替换为“UE进行重建立”，即，所述时间段7可以为UE进行重建立到UE上报所述时间段7的时间段。或，
所述时间段4至所述时间段7中任意两个或两个以上的连续时间段构成的时间段.
需要说明的是，传统切换失败的时刻与UE确定出所述第二小区的时刻可能相等或不等。当两个时刻相等时，时间段6为“0”或UE无需记录时间段6，此时，时间段5可以替换为“所述时间段5为UE收到传统切换消息到UE确定出所述第二小区的时间段”，时间段7可以替换为“所述时间段7为传统切换失败的时刻到UE上报所述时间段7的时间段”。
需要说明的是，以上时间段4至时间段7，或根据时间段4至时间段7得到的时间段，在具体实现中，可以是：在传统切换失败发生时，记录以下一个或多个时间段：时间段4、时间段5、时间段6、及根据时间段4至时间段6中任意两个或两个以上的连续时间段得 到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段7时(例如，场景四中，当UE重建立成功或RRC建立成功时，例如，UE向重建立小区发送RRC重建立完成消息时或UE向RRC建立过程中的小区发送RRC建立完成消息时)，记录上述时间段7、和/或记录时间段6与时间段7构成的时间段、和/或记录根据时间段X至时间段6构成的新时间段与时间段7相结合得到的时间段，其中X为4至5中的任意取值，比如可以记录在另一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
再比如，在UE与满足CHO的执行条件的第一候选小区的接入或切换失败的情形下，UE可以记录以下信息中的一项或多项：
时间段8，所述时间段8为UE收到所述RRC重配置消息到UE确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段9，所述时间段9为UE确定出满足条件切换的执行条件的所述第一候选小区到UE与所述第一候选小区切换或接入失败的时间段，
时间段10，所述时间段10为UE与所述第一候选小区切换或接入失败到UE确定出第二小区的时间段，其中，“UE确定出第二小区”可以替换为“UE进行重建立”，即，所述时间段12可以为UE与所述第一候选小区切换或接入失败到UE进行重建立的时间段。
时间段11，所述时间段11为UE确定出第二小区到UE上报所述时间段11的时间段，其中，“UE确定出第二小区”可以替换为“UE进行重建立”，即，所述时间段11可以为UE进行重建立到UE上报所述时间段11的时间段。或，
所述时间段8至所述时间段11中任意两个或两个以上的连续时间段构成的时间段。
需要说明的是，UE与所述第一候选小区切换或接入失败的时刻与UE确定出所述第二小区的时刻可能相等或不等。当两个时刻相等时，时间段10为“0”或UE无需记录时间段10，此时，时间段9可以替换为“所述时间段9为UE确定出满足条件切换的执行条件的所述第一候选小区到UE确定出所述第二小区的时间段”，时间段11可以替换为“所述时间段11为UE与所述第一候选小区切换或接入失败到UE上报所述时间段11的时间段”。
需要说明的是，以上时间段8至时间段11，或根据时间段8至时间段11得到的时间段，在具体实现中，可以是：在UE与满足CHO的执行条件的候选小区(即第一候选小区)的接入或切换失败时，记录以下一个或多个时间段：时间段8、时间段9、时间段10、及根据时间段8至时间段10中任意两个或两个以上的连续时间段得到的时间段，比如可以记录在同一个变量或信元中，该变量或信元可以是新定义的或重用现有的，例如timeConnFailure或其他，不作限定。在接收到网络设备发送的上报记录的信息的请求(如图2对应的实施例描述的第一指示信息，或者，如图2对应的实施例描述的第二指示信息)时，或者，在UE需要上报时间段11时(例如，场景四中，当UE重建立成功或RRC建立成功时，例如，UE向重建立小区发送RRC重建立完成消息时或UE向RRC建立过程中的小区发送RRC建立完成消息时)，记录上述时间段11、和/或记录时间段10与时间段11构成的时间段、和/或记录根据时间段X至时间段10构成的新时间段与时间段11相结合得到的时间段，其中X为8至9中的任意取值，比如可以记录在另一个变量或信元中，该变 量或信元可以是新定义的或重用现有的，例如timeSinceFailure或其他，不作限定。
该场景四下，如果重建立成功，则UE在向重建立小区(或重建立小区所属的网络设备)发送的RRC重建立完成消息中包含指示信息，该指示信息用于表示UE记录了上述1)-6)信息中的一项或多项；如果重建立失败，则UE在向RRC建立过程中的小区(或该小区所属的网络设备)发送的RRC建立完成消息中包含指示信息，该指示信息用于表示UE记录了上述1)至6)信息中的一项或多项。
上述方案，给出CHO机制的不同场景中UE可以记录的相关信息，以便后续进行相关信息的上报，进而使得网络设备可以根据UE上报的相关信息进行参数的调整，从而提高系统可靠性、鲁棒性。
基于图1所示的网络架构，如图2所示，本申请提供一种通信方法，可用于实现UE基于网络设备的请求，向网络设备上报CHO流程中的相关信息。该方法在终端设备侧，可以由终端设备或用于终端设备的部件(如芯片、电路等)执行；在网络侧，可以由网络设备或用于网络设备的部件(如芯片、电路等)执行。为便于说明，下面以终端设备和网络设备执行该方法为例进行说明，终端设备以UE为例进行描述。
该方法包括以下步骤：
步骤201，第一网络设备向UE发送第一指示信息。相应的，UE可以接收到该第一指示信息。
该第一指示信息用于请求UE上报第一信息。一种示例，第一指示信息可以为UEInformation Requset消息。可选地，第一指示信息中可以包含第三信息和/或第四信息，例如，第三信息用于指示UE上报接入/切换失败时的相关信息，第四信息用于指示UE上报接入/切换成功时的相关信息。
具体的，场景一中，第一网络设备可以是第一小区所属的网络设备。
场景二中，第一网络设备可以是第一候选小区所属的网络设备。
场景三中，如果重建立成功，第一网络设备可以是重建立小区所属的网络设备，如果重建立失败，第一网络设备可以是RRC建立过程中的小区所属的网络设备。
场景四中，如果重建立成功，第一网络设备可以是重建立小区所属的网络设备，如果重建立失败，第一网络设备可以是RRC建立过程中的小区所属的网络设备。
步骤202，UE向第一网络设备上报第一信息。
在上述场景一中，UE记录并上报的第一信息如上述场景一中所描述的信息中的部分或全部信息。在上述场景二中，UE记录并上报的第一信息如上述场景二中所描述的信息中的部分或全部信息。在上述场景三中，UE记录并上报的第一信息如上述场景三中所描述的信息中的部分或全部信息。在上述场景四中，UE记录并上报的第一信息如上述场景四中所描述的信息中的部分或全部信息。
针对上述各个场景，UE上报在第一信息时，可以通过一条RRC消息(例如，该消息是UE粒度的)上报，或者也可以分多条RRC消息上报(例如，该消息是小区粒度的)。该RRC消息可以采用新定义的RRC消息，或者重用现有的RRC消息(例如，UEInformationResponse)，不做限定。可选地，UE还可以上报第五信息和/或第六信息，例如，第五信息用于表示UE上报的是接入/切换失败时的相关信息，第六信息用于指示UE上报的是接入/切换成功时的相关信息。
可选的，除了上述根据第一网络设备的请求上报第一信息之外，还可以是周期性进行上报(上报的周期长度可以协议约定或网络指示，例如，包含CHO配置信息的RRC消息中可以包含上报的周期长度)，或基于事件进行上报，例如，UE成功接入或切换至第一小区时进行第一信息的上报，或，UE成功接入或切换至第一候选小区时进行第一信息的上报，或者，UE进行重建立时进行第一信息的上报，或者，UE进行RRC建立时进行第一信息的上报。
基于上述方案，UE可以向第一网络设备上报记录的CHO流程中的相关信息，从而网络设备可以根据获得的相关信息进行切换参数(如传统切换配置信息或CHO配置信息)的调整，从而提高系统可靠性、鲁棒性。
可选的，还可以包括以下步骤203。
步骤203，第一网络设备向第三网络设备发送第一信息中的部分或全部。
为便于说明，以下将源小区所属的网络设备称为源网络设备，候选小区所属的网络设备称为候选网络设备，重建立小区所属的网络设备称为重建立网络设备，目标小区(这里指传统切换中的目标小区)所属的网络设备称为目标网络设备。以下以源网络设备、目标网络设备、候选网络设备、重建立网络设备相互不同为例进行说明。其中，第三网络设备可以包含至少一个网络设备，当第三网络设备包含多个网络设备时，第一网络设备向该多个网络设备发送的信息可以相同或不同，本实施例对此不做限定。
具体的，
场景一中，第一网络设备可以是第一小区所属的网络设备，第三网络设备可以是源网络设备和/或目标网络设备和/或候选网络设备。比如，场景一中，在源小区发生RLF的情形下，第三网络设备可以是源网络设备；在发生传统失败的情形下，第三网络设备可以是目标网络设备和/或源网络设备，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给目标网络设备；在UE与满足CHO的执行条件的候选小区(即第一候选小区)的接入或切换失败的情形下，第三网络设备可以是源网络设备和/或候选网络设备(例如，该候选网络设备可以是第一候选小区所属的网络设备)，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给候选网络设备。
场景二中，第一网络设备可以是第一候选小区所属的网络设备，第三网络设备可以是源网络设备和/或除第一候选小区外的其他候选小区所属的网络设备。比如，场景二中，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给除第一候选小区外的其他候选小区所属的网络设备。
场景三或场景四中，如果重建立成功，第一网络设备可以是重建立小区所属的网络设备，第三网络设备可以是源网络设备和/或目标网络设备和/或候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)。具体地，场景三或场景四中，在源小区发生RLF的情形下，第三网络设备可以是源网络设备和/或候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给候 选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)；在发生传统失败的情形下，第三网络设备可以是目标网络设备和/或源网络设备和/或候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给目标网络设备，和/或，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)；在UE与满足CHO的执行条件的候选小区(即第一候选小区)的接入或切换失败的情形下，第三网络设备可以是源网络设备和/或候选网络设备(例如，该候选网络设备可以是第一候选小区所属的网络设备和/或第一小区所属的网络设备和/或除第一小区、第一候选小区外的其他候选小区所属的网络设备)，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给候选网络设备(例如，该候选网络设备可以是第一候选小区所属的网络设备和/或第一小区所属的网络设备和/或除第一小区、第一候选小区外的其他候选小区所属的网络设备)。
场景三或场景四中，如果重建立失败，第一网络设备可以是RRC建立过程中的小区所属的网络设备，第三网络设备可以是源网络设备和/或目标网络设备和/或候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)和/或重建立网络设备。比如，场景三或场景四中，在源小区发生RLF的情形下，第三网络设备可以是源网络设备和/或候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)和/或重建立网络设备，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)，和/或，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给重建立网络设备；在发生传统失败的情形下，第三网络设备可以是目标网络设备和/或源网络设备和/或候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)和/或重建立网络设备，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给目标网络设备，和/或，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给候选网络设备(该候选网络设备包括第一小区所属的网络设备和/或除第一小区外的其他候选小区所属的网络设备)，和/或，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给重建立网络设备；在UE与满足CHO的执行条件的候选小区(即第一候选小区)的接入或切换失败的情形下，第三网络设备可以是源网络设备和/或候选网络设备(例如，该候选网络设备可以是第一候选小区所属的网络设备和/或第一小区所属的网络设备和/或除第一小区、第一候选小区外的其他候选小区所属的网络设备)和/或重建立网络设备，一种示例，当第三网络设备为源网络设备时，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给候选网络设备(例如，该候选网络设备可以是第一候选小区所属的网络设备和/或第一小区所属的网络设备和/或除第一小区、第一候选 小区外的其他候选小区所属的网络设备)，和/或，第三网络设备(即源网络设备)还可以将从第一网络设备接收到的信息中的部分或全部发送给重建立网络设备。
第一网络设备和/或第三网络设备可以根据接收到的相关信息进行参数(如传统切换参数配置信息或CHO参数配置信息)的调整，从而提高系统可靠性、鲁棒性。例如，可以调整至少一个候选小区所分别对应的CHO配置信息，或者，后续CHO流程中可以不将某小区配置为候选小区，或者，后续传统切换流程中不将某小区配置成目标小区。
作为一种实现方法，在上述步骤201之前，UE还可以接收来自第二网络设备的第二指示信息，所述第二指示信息用于指示UE记录所述第一信息中的部分或全部。其中，第二网络设备可以为源网络设备。一种示例，该第二指示信息可以包含多个指示信息，例如，第二指示信息中可以包含用于指示UE记录接入/切换失败时的相关信息的指示信息，和/或，用于指示UE记录接入/切换成功时的相关信息的指示信息。
作为一种实现方法，在上述步骤201之前，UE在完成第一信息中的部分或全部记录之后，UE还可以向第一网络设备发送第三指示信息，该第三指示信息用于指示UE已经完成所述第一信息中的部分或全部的记录。一种示例，该第三指示信息可以包含多个指示信息，例如，第三指示信息中可以包含用于指示UE已经完成接入/切换失败时的相关信息的记录的指示信息，和/或，用于指示UE已经完成接入/切换成功时的相关信息的记录的指示信息。比如，该第三指示信息可以包含在RRC建立完成消息中或RRC恢复完成消息中或RRC重建立完成消息中或RRC重配置完成消息中或其他消息，对此不做限定。可选地，UE还可以向第二网络设备发送该第三指示信息。
作为一种实现方法，在上述步骤201之前，还可以包括：第一网络设备从其他网络设备(该其他网络设备可以是源网络设备、目标网络设备、候选网络设备、重建立网络设备、RRC建立过程中的小区所属的网络设备中的一个，且与第一网络设备不同)接收到上述第一指示信息。比如，第一网络设备是第一候选小区所属的网络设备，该其他网络设备是源网络设备，则源网络设备可以在向第一候选小区所属的网络设备发送的切换请求消息中携带上述第一指示信息，进而，第一候选小区所属的网络设备在向源网络设备发送的切换请求确认消息中携带上述第一指示信息，源网络设备在向UE发送的包含CHO配置信息的RRC重配置消息中携带上述第一指示信息，该第一指示信息可以是二进制数值或布尔值或某信元，本实施例对此不作限定。
作为一个示例，本申请上述任意实施例中，针对上述场景一或场景二，可以在RRC重配置消息(该RRC重配置消息可以是包含CHO配置信息的RRC消息，或用于传统切换的RRC消息(即切换消息))中包含上述第二指示信息。UE可以在向成功接入的小区所属的网络设备(即第一网络设备，例如，场景一中，该第一网络设备即为第一小区所属的网络设备；场景二中，该第一网络设备即为第一候选小区所属的网络设备)发送的RRC重配置完成消息中包含记录的相应场景中的相关信息(即上述场景一或场景二中的第一信息中的部分或全部)。可选地，RRC重配置完成消息中还可以包含第三指示信息。
作为一个示例，本申请上述任意实施例中，针对上述场景三或场景四，可以在RRC重配置消息(该RRC重配置消息可以是包含CHO配置信息的RRC消息，或用于传统切换的RRC消息(即切换消息))中包含上述第二指示信息。场景三或场景四中，如果重建立成功，第一网络设备可以是重建立小区所属的网络设备，UE可以在向重建立小区所属的网络设备发送的RRC重建立完成消息中包含记录的相应场景中的相关信息(即上述场 景三或场景四中的第一信息中的部分或全部)。可选地，RRC重建立完成消息中还可以包含第三指示信息；如果重建立失败，第一网络设备可以是RRC建立过程中的小区所属的网络设备，UE可以在向RRC建立过程中的小区所属的网络设备发送的RRC建立完成消息中包含记录的相应场景中的相关信息(即上述场景三或场景四中的第一信息中的部分或全部)。可选地，RRC建立完成消息中还可以包含第三指示信息。
本申上述实施例中，UE可以记录、上报条件切换流程中产生的相关信息，具备以下有益效果：
需要说明的是，以下字符“/”的含义为“和/或”。比如记录/上报，其包括以下含义：记录，或，上报，或，记录和上报。这里统一说明，后续不再赘述。
针对场景一：
1)若记录/上报成功接入或切换至所述第一小区时对应的相关信息，网络设备(如候选网络设备、或目标网络设备、或源网络设备)根据接收到的信息，可以获知第一小区信号质量较好，且第一小区是一个满足小区选择准则(或满足S准则)且UE能成功接入或切换的小区。
2)若记录/上报源小区对应的相关信息，第一网络设备根据源小区的标识信息，后续第一网络设备可以将UE上报的相关信息中的部分或全部发送给源网络设备。且网络设备(如候选网络设备、或目标网络设备、或源网络设备)得知第一小区是一个满足小区选择准则(或满足S准则)且UE能成功接入或切换的小区。若记录/上报失败原因值(如，原因值为“源小区发生RLF”)和/或该源小区发生RLF的指示信息，则网络设备(如候选网络设备、或目标网络设备、或源网络设备)可以知道CHO流程中源小区发生RLF。
3)若记录/上报目标小区的标识信息，第一网络设备根据目标小区的标识信息，后续第一网络设备或源网络设备可以将UE上报的相关信息中的部分或全部发送给目标网络设备。根据该目标小区对应的信号质量、失败原因值(如，原因值为“HOF”或“T304超时”)、传统切换失败(或T304超时)的指示信息，网络设备(如候选网络设备、或目标网络设备、或源网络设备)可以知道CHO流程中触发了传统切换流程，但传统切换失败。
4)若记录/上报UE与第一候选小区的接入或切换失败时对应的相关信息，第一网络设备根据第一候选小区的标识信息、第一候选小区对应的索引信息、第一候选小区对应的CHO配置信息、UE接入或切换至第一候选小区失败时第一候选小区对应的信号质量，得知第一候选小区的质量较差，后续第一网络设备或源网络设备可以将UE上报的相关信息中的部分或全部发送给候选网络设备。
第一网络设备根据失败原因值(如，原因值为“满足CHO的执行条件但是UE接入或切换失败”)、第一候选小区满足CHO的执行条件但是UE接入或切换失败的指示信息、成功原因值(如，原因值为“第一小区满足小区选择准则(或满足S准则)且接入或切换成功”)、第一小区满足小区选择准则(或满足S准则)且接入或切换成功的指示信息，网络设备(如候选网络设备、或源网络设备)可以获知CHO流程中UE未能成功切换至第一候选小区。
另外，结合第一小区的标识信息、候选小区的标识信息，由于UE进行小区选择后选择出的小区属于候选小区，则第一网络设备可以认为UE未能成功切换至第一候选小区属于错误切换(或者，可以理解为CHO流程中配置的候选小区不合适，例如，候选小区的 CHO配置信息(如CHO的执行条件信息)不合适，或者，某个小区不该被配成CHO流程中的候选小区)。
5)若记录/上报各个时刻所述至少一个候选小区中的部分或全部候选小区对应的信号质量，网络设备(如候选网络设备、或目标网络设备、或源网络设备)可以获知各个时刻哪些小区信号质量好，哪些小区信号质量差。
6)若记录/上报时间信息，网络设备(如候选网络设备、或目标网络设备、或源网络设备)可以根据时间信息，在合适的时机进行相关参数的调整。
针对上述场景二：
1)若记录/上报成功接入或切换至所述第一候选小区时对应的相关信息，则网络设备(如候选网络设备、或目标网络设备、或源网络设备)根据接收到的信息，获知第一候选小区信号质量较好，且CHO流程成功。
2)其他信息，参考场景一的有益效果描述。
针对上述场景三：
1)若记录/上报UE与选择出的第一小区接入或切换失败时对应的相关信息，网络设备(如候选网络设备、或目标网络设备、或源网络设备)根据第一小区的标识信息、第一小区对应的索引信息、第一小区对应的CHO配置信息、UE接入或切换至所述第一小区失败时所述第一小区对应的信号质量，可以获知第一小区信号质量不理想。
根据失败原因值(如，原因值为“该小区满足小区选择准则(或满足S准则)但接入或切换失败”，或重用现有的原因值，如“HOF”，不做限定)、该小区满足小区选择准则(或满足S准则)但接入或切换失败的指示信息、失败原因值(如，原因值为“满足CHO的执行条件但是UE接入或切换失败”)、第一候选小区满足CHO的执行条件但是UE接入或切换失败的指示信息，网络设备(如候选网络设备、或目标网络设备、或源网络设备)可以获知CHO流程失败(或者，可以理解为CHO流程中UE未能成功切换至第一候选小区、第一小区)。
另外，结合第一小区的标识信息、源小区的标识信息，由于UE进行小区选择后选择出的小区属于候选小区，则网络设备(如候选网络设备、或目标网络设备、或源网络设备)可以认为UE未能成功切换至第一候选小区属于错误切换(或者，可以理解为CHO流程中配置的候选小区不合适，例如，候选小区的CHO配置信息(如CHO的执行条件信息)不合适，或者，某个小区不该被配成CHO流程中的候选小区)。
2)若记录/上报重建立流程时对应的相关信息，网络设备(如候选网络设备、或目标网络设备、或源网络设备、或重建立网络设备)根据重建立原因值、UE与满足小区选择准则(或满足S准则)的第一小区接入或切换失败的指示信息，网络设备(如候选网络设备、或目标网络设备、或源网络设备、或重建立网络设备)可以知道CHO流程失败(或者，可以理解为CHO流程中UE未能成功切换至第一候选小区、第一小区)，或者，网络设备可以认为场景三是一种错误切换或过早切换(或者，可以理解为CHO流程中配置的候选小区不合适，例如，候选小区的CHO配置信息(如CHO的执行条件信息)不合适，或者，某个小区不该被配成CHO流程中的候选小区)。
结合源小区的标识信息、重建立小区的标识信息，如果UE进行重建立的小区是源小 区，则网络设备可以认为场景三是一种过早切换；如果UE进行重建立的小区是除源小区外的其他小区，则第一网络设备可以认为场景三是一种错误切换(或者，可以理解为CHO流程中配置的候选小区不合适，例如，候选小区的CHO配置信息(如CHO的执行条件信息)不合适，或者，某个小区不该被配成CHO流程中的候选小区)。
2)其他信息，参考场景一的有益效果描述。
针对场景四：
1)若记录/上报重建立流程时对应的相关信息，网络设备(如候选网络设备、或目标网络设备、或源网络设备、或重建立网络设备)根据重建立原因值、UE进行小区选择后选择出的小区虽满足小区选择准则(或满足S准则)但不属于至少一个候选小区的指示信息，可以获知CHO流程失败(或者，可以理解为CHO流程中UE未能成功切换至第一候选小区)，或者，网络设备(如候选网络设备、或目标网络设备、或源网络设备、或重建立网络设备)可以认为场景四是一种错误切换或过早切换(或者，可以理解为CHO流程中配置的候选小区不合适，例如，候选小区的CHO配置信息(如CHO的执行条件信息)不合适，或者，某个小区不该被配成CHO流程中的候选小区)。
另外，结合至少一个候选小区的标识信息、源小区的标识信息，如果UE进行小区选择后选择出的是源小区，则网络设备(如候选网络设备、或目标网络设备、或源网络设备、或重建立网络设备)可以认为UE未能成功切换至第一候选小区属于过早切换；如果进行小区选择后选择出的是除源小区、候选小区外的其他小区，则网络设备(如候选网络设备、或目标网络设备、或源网络设备、或重建立网络设备)可以认为UE未能成功切换至第一候选小区属于错误切换(或者，可以理解为CHO流程中配置的候选小区不合适，例如，候选小区的CHO配置信息(如CHO的执行条件信息)不合适，或者，某个小区不该被配成CHO流程中的候选小区)。
2)其他信息，参考场景一的有益效果描述。
上述主要从各个网元之间交互的角度对本申请提供的方案进行了介绍。可以理解的是，上述实现各网元为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
可以理解的是，上述各个方法实施例中，对应由终端设备实现的步骤或者操作，也可以由可以配置于终端设备的部件(例如芯片或者电路)实现，由网络设备实现的步骤或者操作，也可以由可以配置于网络设备的部件(例如芯片或者电路)实现。
本申请实施例还提供用于实现以上任一种方法的装置，例如，提供一种装置包括用以实现以上任一种方法中终端设备所执行的各个步骤的单元(或手段)。再如，还提供另一种装置，包括用以实现以上任一种方法中网络设备所执行的各个步骤的单元(或手段)。
例如，参考图3，为本申请实施例提供的一种通信装置的示意图。该装置用于实现上 述方法实施例中对应终端设备所执行的各个步骤，如图3所示，该装置300包括发送单元310和接收单元320。该装置可以为终端设备，或，可以配置于终端设备的部件(例如芯片或者电路)。该装置可以包括以下可能的实现方式中的一种或多种。
在第一种可能的实现方式中：
接收单元320，用于从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；发送单元310，用于向所述第一网络设备上报所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息包括以下中的一项或多项：所述第一小区的标识信息、所述第一小区对应的索引信息、所述终端设备成功接入所述第一小区时所述第一小区对应的信号质量、成功原因值、或，所述第一小区满足小区选择准则且接入成功的指示信息；其中，所述第一小区属于所述第一网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备成功接入所述第一小区时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出所述第一小区的时间段，
时间段3，所述时间段3为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段4，所述时间段4为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段4的时间段，或，
所述时间段1至所述时间段4中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段5，所述时间段5为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
时间段6，所述时间段6为所述终端设备收到传统切换消息到传统切换失败的时间段，
时间段7，所述时间段7为传统切换失败到所述终端设备确定出所述第一小区的时间段，
时间段8，所述时间段8为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段9，所述时间段9为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段9的时间段，或，
所述时间段5至所述时间段9中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段10，所述时间段10为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段11，所述时间段11为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
时间段12，所述时间段12为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
时间段13，所述时间段13为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段14，所述时间段14为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段14的时间段，或，
所述时间段10至所述时间段14中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，接收单元320，还用于在接收第一指示信息之前，接收用于指示记录所述第一信息的指示信息。
在一种可能的实现方法中，发送单元310，还用于在接收单元320接收第一指示信息之前，向所述第一网络设备发送用于指示已经完成所述第一信息的记录的指示信息。
在第二种可能的实现方式中：
接收单元320，用于从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；发送单元310，用于向所述第一网络设备上报所述第一信息。其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的 第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息包括以下中的一项或多项：
所述第一小区的标识信息、所述第一小区对应的索引信息、所述第一小区对应的条件切换配置信息、所述终端设备接入所述第一小区失败时所述第一小区对应的信号质量、失败原因值、或，所述第一小区满足小区选择准则且接入失败的指示信息；
其中，所述第一网络设备为重建立小区所属的网络设备、或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，
所述终端设备接入所述第一小区失败时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量，或，
所述终端设备执行重建立流程时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出第一小区的时间段，
时间段3，所述时间段3为所述终端设备确定出第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段4，所述时间段4为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
时间段5，所述时间段5为所述终端设备确定出重建立小区到所述终端设备上报所述时间段5的时间段，或，
所述时间段1至所述时间段5中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段6，所述时间段6为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
时间段7，所述时间段7为所述终端设备收到传统切换消息到传统切换失败的时间段，
时间段8，所述时间段8为传统切换失败到所述终端设备确定出所述第一小区的时间段，
时间段9，所述时间段9为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段10，所述时间段10为所述终端设备接入所述第一小区失败到所述终端设备确定重建立小区的时间段，
时间段11，所述时间段11为所述终端设备确定出重建立小区到所述终端设备上报所述时间段11的时间段。或，
所述时间段6至所述时间段11中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段12，所述时间段12为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段13，所述时间段13为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
时间段14，所述时间段14为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
时间段15，所述时间段15为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段16，所述时间段16为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
时间段17，所述时间段17为所述终端设备确定出重建立小区到所述终端设备上报所述时间段17的时间段，或，
所述时间段12至所述时间段17中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，所述从第一网络设备接收第一指示信息之前，还包括：
接收用于指示记录所述第一信息的指示信息。
在一种可能的实现方法中，发送单元310，还用于在接收单元320接收第一指示信息之前，向所述第一网络设备发送用于指示已经完成所述第一信息的记录的指示信息。
可以理解的是，上述各个单元也可以称为模块或者电路等，并且上述各个单元可以独立设置，也可以全部或者部分集成。
一些可能的实现方式中，上述发送单元310和接收单元320也可以通过收发单元实现，或者说发送单元310和接收单元320也可以统称为收发单元。上述发送单元310和接收单元320或者收发单元也可称为通信接口。
可选的，上述通信装置300还可以包括存储单元，该存储单元用于存储数据或者指令(也可以称为代码或者程序)，上述各个单元可以和存储单元交互或者耦合，以实现对应的方法或者功能。
例如，参考图4，为本申请实施例提供的一种通信装置的示意图。该装置用于实现上述方法实施例中对应网络设备所执行的各个步骤，如图4所示，该装置400包括发送单元410和接收单元420。该装置可以为网络设备，或，可以配置于网络设备的部件(例如芯片或者电路)。该装置可以包括以下可能的实现方式中的一种或多种。在第一种可能的实现方式中：
发送单元410，用于向终端设备发送第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；接收单元420，用于从所述终端设备接收所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息包括以下中的一项或多项：所述第一小区的标识信息、所述第一小区对应的索引信息、所述终端设备成功接入所述第一小区时所述第一小区对应的信号质量、成功原因值、或，所述第一小区满足小区选择准则且接入成功的指示信息；其中，所述第一小区属于所述第一网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备成功接入所述第一小区时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生 无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出所述第一小区的时间段，
时间段3，所述时间段3为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段4，所述时间段4为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段4的时间段，或，
所述时间段1至所述时间段4中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段5，所述时间段5为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
时间段6，所述时间段6为所述终端设备收到传统切换消息到传统切换失败的时间段，
时间段7，所述时间段7为传统切换失败到所述终端设备确定出所述第一小区的时间段，
时间段8，所述时间段8为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段9，所述时间段9为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段9的时间段，或，
所述时间段5至所述时间段9中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
时间段10，所述时间段10为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段11，所述时间段11为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
时间段12，所述时间段12为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
时间段13，所述时间段13为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
时间段14，所述时间段14为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段14的时间段，或，
所述时间段10至所述时间段14中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，接收单元420，还用于在发送单元向终端设备发送第一指示信息之前，从所述终端设备接收用于指示已经完成所述第一信息的记录的指示信息。
在第二种可能的实现方式中：
发送单元410，用于向终端设备发送第一指示信息，所述第一指示信息用于请求所述 终端设备上报第一信息；接收单元420，用于从所述终端设备接收所述第一信息；其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息包括以下中的一项或多项：所述第一小区的标识信息、所述第一小区对应的索引信息、所述第一小区对应的条件切换配置信息、所述终端设备接入所述第一小区失败时所述第一小区对应的信号质量、失败原因值、或，所述第一小区满足小区选择准则且接入失败的指示信息；其中，所述第一网络设备为重建立小区所属的网络设备、或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备接入所述第一小区失败时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量，
所述终端设备执行重建立流程时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
在一种可能的实现方法中，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出第一小区的时间段，
时间段3，所述时间段3为所述终端设备确定出第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段4，所述时间段4为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
时间段5，所述时间段5为所述终端设备确定出重建立小区到所述终端设备上报所述 时间段5的时间段，或，
所述时间段1至所述时间段5中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段6，所述时间段6为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
时间段7，所述时间段7为所述终端设备收到传统切换消息到传统切换失败的时间段，
时间段8，所述时间段8为传统切换失败到所述终端设备确定出所述第一小区的时间段，
时间段9，所述时间段9为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段10，所述时间段10为所述终端设备接入所述第一小区失败到所述终端设备确定重建立小区的时间段，
时间段11，所述时间段11为所述终端设备确定出重建立小区到所述终端设备上报所述时间段11的时间段。或，
所述时间段6至所述时间段11中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
时间段12，所述时间段12为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
时间段13，所述时间段13为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
时间段14，所述时间段14为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
时间段15，所述时间段15为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
时间段16，所述时间段16为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
时间段17，所述时间段17为所述终端设备确定出重建立小区到所述终端设备上报所述时间段17的时间段，或，
所述时间段12至所述时间段17中任意两个或两个以上的连续时间段构成的时间段。
在一种可能的实现方法中，接收单元420，还用于在发送单元向终端设备发送第一指示信息之前，从所述终端设备接收用于指示已经完成所述第一信息的记录的指示信息。
可以理解的是，上述各个单元也可以称为模块或者电路等，并且上述各个单元可以独立设置，也可以全部或者部分集成。
一些可能的实现方式中，上述发送单元410和接收单元420也可以通过收发单元实现，或者说发送单元410和接收单元420也可以统称为收发单元。上述发送单元410和接收单元420或者收发单元也可称为通信接口。
可选的，上述通信装置400还可以包括存储单元，该存储单元用于存储数据或者指令(也可以称为代码或者程序)，上述各个单元可以和存储单元交互或者耦合，以实现对应的方法或者功能。
应理解以上装置中单元的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且装置中的单元可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分单元以软件通过处理元件调用的形式实现，部分单元以硬件的形式实现。例如，各个单元可以为单独设立的处理元件，也可以集成在装置的某一个芯片中实现，此外，也可以以程序的形式存储于存储器中，由装置的某一个处理元件调用并执行该单元的功能。此外这些单元全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件又可以成为处理器，可以是一种具有信号的处理能力的集成电路。在实现过程中，上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路实现或者以软件通过处理元件调用的形式实现。
在一个例子中，以上任一装置中的单元可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit，ASIC)，或，一个或多个微处理器(digital singnal processor，DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array，FPGA)，或这些集成电路形式中至少两种的组合。再如，当装置中的单元可以通过处理元件调度程序的形式实现时，该处理元件可以是通用处理器，例如中央处理器(Central Processing Unit，CPU)或其它可以调用程序的处理器。再如，这些单元可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
以上用于接收的单元(例如接收单元)是一种该装置的接口电路，用于从其它装置接收信号。例如，当该装置以芯片的方式实现时，该接收单元是该芯片用于从其它芯片或装置接收信号的接口电路。以上用于发送的单元(例如发送单元)是一种该装置的接口电路，用于向其它装置发送信号。例如，当该装置以芯片的方式实现时，该发送单元是该芯片用于向其它芯片或装置发送信号的接口电路。
本申请一实施例还提供一种通信装置，用以实现以上任一种方法中终端设备所执行的各个步骤的单元(或手段)或者用以实现以上任一种方法中网络设备所执行的各个步骤的单元(或手段)。该通信装置可以包括处理器和存储器，该存储器用于存储计算机执行指令，当该装置运行时，该处理器执行该存储器存储的该计算机执行指令，以使该装置执行如上述各方面所述的方法。该装置可以是网络设备或用于网络设备的芯片，或终端设备或用于终端设备的芯片。
参考图5，其为本申请实施例提供的一种终端设备的结构示意图。该终端设备用于实现以上实施例中终端设备的操作。如图5所示，该终端设备包括：天线510、射频装置520、信号处理部分530。天线510与射频装置520连接。在下行方向上，射频装置520通过天线510接收网络设备发送的信息，将网络设备发送的信息发送给信号处理部分530进行处理。在上行方向上，信号处理部分530对终端设备的信息进行处理，并发送给射频装置520，射频装置520对终端设备的信息进行处理后经过天线510发送给网络设备。
信号处理部分530用于实现对数据各通信协议层的处理。信号处理部分530可以为该终端设备的一个子系统，则该终端设备还可以包括其它子系统，例如中央处理子系统，用 于实现对终端设备操作系统以及应用层的处理；再如，周边子系统用于实现与其它设备的连接。信号处理部分530可以为单独设置的芯片。可选的，以上的装置可以位于信号处理部分530。
信号处理部分530可以包括一个或多个处理元件5031，例如，包括一个主控CPU和其它集成电路，以及包括接口电路5033。此外，该信号处理部分530还可以包括存储元件5032。存储元件5032用于存储数据和程序，用于执行以上方法中终端设备所执行的方法的程序可能存储，也可能不存储于该存储元件5032中，例如，存储于信号处理部分530之外的存储器中，使用时信号处理部分530加载该程序到缓存中进行使用。接口电路5033用于与装置通信。以上装置可以位于信号处理部分530，该信号处理部分530可以通过芯片实现，该芯片包括至少一个处理元件和接口电路，其中处理元件用于执行以上终端设备执行的任一种方法的各个步骤，接口电路用于与其它装置通信。在一种实现中，实现以上方法中各个步骤的单元可以通过处理元件调度程序的形式实现，例如该装置包括处理元件和存储元件，处理元件调用存储元件存储的程序，以执行以上方法实施例中终端设备执行的方法。存储元件可以为处理元件处于同一芯片上的存储元件，即片内存储元件。
在另一种实现中，用于执行以上方法中终端设备所执行的方法的程序可以在与处理元件处于不同芯片上的存储元件，即片外存储元件。此时，处理元件从片外存储元件调用或加载程序于片内存储元件上，以调用并执行以上方法实施例中终端设备执行的方法。
在又一种实现中，终端设备实现以上方法中各个步骤的单元可以是被配置成一个或多个处理元件，这些处理元件设置于信号处理部分530上，这里的处理元件可以为集成电路，例如：一个或多个ASIC，或，一个或多个DSP，或，一个或者多个FPGA，或者这些类集成电路的组合。这些集成电路可以集成在一起，构成芯片。
实现以上方法中各个步骤的单元可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现，该SOC芯片，用于实现以上方法。该芯片内可以集成至少一个处理元件和存储元件，由处理元件调用存储元件的存储的程序的形式实现以上终端设备执行的方法；或者，该芯片内可以集成至少一个集成电路，用于实现以上终端设备执行的方法；或者，可以结合以上实现方式，部分单元的功能通过处理元件调用程序的形式实现，部分单元的功能通过集成电路的形式实现。
可见，以上装置可以包括至少一个处理元件和接口电路，其中至少一个处理元件用于执行以上方法实施例所提供的任一种终端设备执行的方法。处理元件可以以第一种方式：即调用存储元件存储的程序的方式执行终端设备执行的部分或全部步骤；也可以以第二种方式：即通过处理器元件中的硬件的集成逻辑电路结合指令的方式执行终端设备执行的部分或全部步骤；当然，也可以结合第一种方式和第二种方式执行终端设备执行的部分或全部步骤。
这里的处理元件同以上描述，可以是通用处理器，例如CPU，还可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个ASIC，或，一个或多个微处理器DSP，或，一个或者多个FPGA等，或这些集成电路形式中至少两种的组合。存储元件可以是一个存储器，也可以是多个存储元件的统称。
参考图6，为本申请实施例提供的一种网络设备的结构示意图。该网络设备用于实现以上实施例中网络设备的操作。如图6所示，该网络设备包括：天线610、射频装置620、 基带装置630。天线610与射频装置620连接。在上行方向上，射频装置620通过天线610接收终端设备发送的信息，将终端设备发送的信息发送给基带装置630进行处理。在下行方向上，基带装置630对终端设备的信息进行处理，并发送给射频装置620，射频装置620对终端设备的信息进行处理后经过天线610发送给终端设备。
基带装置630可以包括一个或多个处理元件631，例如，包括一个主控CPU和其它集成电路，以及还包括接口633。此外，该基带装置630还可以包括存储元件632，存储元件632用于存储程序和数据；接口633用于与射频装置620交互信息，该接口例如为通用公共无线接口(common public radio interface，CPRI)。以上用于网络设备的装置可以位于基带装置630，例如，以上用于网络设备的装置可以为基带装置630上的芯片，该芯片包括至少一个处理元件和接口电路，其中处理元件用于执行以上网络设备执行的任一种方法的各个步骤，接口电路用于与其它装置通信。在一种实现中，网络设备实现以上方法中各个步骤的单元可以通过处理元件调度程序的形式实现，例如用于网络设备的装置包括处理元件和存储元件，处理元件调用存储元件存储的程序，以执行以上方法实施例中网络设备执行的方法。存储元件可以为处理元件处于同一芯片上的存储元件，即片内存储元件，也可以为与处理元件处于不同芯片上的存储元件，即片外存储元件。
在另一种实现中，网络设备实现以上方法中各个步骤的单元可以是被配置成一个或多个处理元件，这些处理元件设置于基带装置上，这里的处理元件可以为集成电路，例如：一个或多个ASIC，或，一个或多个DSP，或，一个或者多个FPGA，或者这些类集成电路的组合。这些集成电路可以集成在一起，构成芯片。
网络设备实现以上方法中各个步骤的单元可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现，例如，基带装置包括该SOC芯片，用于实现以上方法。该芯片内可以集成至少一个处理元件和存储元件，由处理元件调用存储元件的存储的程序的形式实现以上网络设备执行的方法；或者，该芯片内可以集成至少一个集成电路，用于实现以上网络设备执行的方法；或者，可以结合以上实现方式，部分单元的功能通过处理元件调用程序的形式实现，部分单元的功能通过集成电路的形式实现。
可见，以上用于网络设备的装置可以包括至少一个处理元件和接口电路，其中至少一个处理元件用于执行以上方法实施例所提供的任一种网络设备执行的方法。处理元件可以以第一种方式：即调用存储元件存储的程序的方式执行网络设备执行的部分或全部步骤；也可以以第二种方式：即通过处理器元件中的硬件的集成逻辑电路结合指令的方式执行网络设备执行的部分或全部步骤；当然，也可以结合第一种方式和第二种方式执行以上网络设备执行的部分或全部步骤。
这里的处理元件同以上描述，可以是通用处理器，例如CPU，还可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个ASIC，或，一个或多个微处理器DSP，或，一个或者多个FPGA等，或这些集成电路形式中至少两种的组合。存储元件可以是一个存储器，也可以是多个存储元件的统称。
本申请一实施例还提供一种通信系统，包括如图3所示的通信装置和如图4所示的通信装置。
本申请又一实施例提供一种通信系统，包括如图5所示的终端设备和如图6所示的网络设备。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。 当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包括一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
本申请实施例中所描述的各种说明性的逻辑单元和电路可以通过通用处理器，数字信号处理器，专用集成电路(ASIC)，现场可编程门阵列(FPGA)或其它可编程逻辑装置，离散门或晶体管逻辑，离散硬件部件，或上述任何组合的设计来实现或操作所描述的功能。通用处理器可以为微处理器，可选地，该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现，例如数字信号处理器和微处理器，多个微处理器，一个或多个微处理器联合一个数字信号处理器核，或任何其它类似的配置来实现。
在一个或多个示例性的设计中，本申请所描述的上述功能可以在硬件、软件、固件或这三者的任意组合来实现。如果在软件中实现，这些功能可以存储与电脑可读的媒介上，或以一个或多个指令或代码形式传输于电脑可读的媒介上。电脑可读媒介包括电脑存储媒介和便于使得让电脑程序从一个地方转移到其它地方的通信媒介。存储媒介可以是任何通用或特殊电脑可以接入访问的可用媒体。例如，这样的电脑可读媒体可以包括但不限于RAM、ROM、EEPROM、CD-ROM或其它光盘存储、磁盘存储或其它磁性存储装置，或其它任何可以用于承载或存储以指令或数据结构和其它可被通用或特殊电脑、或通用或特殊处理器读取形式的程序代码的媒介。此外，任何连接都可以被适当地定义为电脑可读媒介，例如，如果软件是从一个网站站点、服务器或其它远程资源通过一个同轴电缆、光纤电脑、双绞线、数字用户线(DSL)或以例如红外、无线和微波等无线方式传输的也被包含在所定义的电脑可读媒介中。所述的碟片(disk)和磁盘(disc)包括压缩磁盘、镭射盘、光盘、数字通用光盘(英文：Digital Versatile Disc，简称：DVD)、软盘和蓝光光盘，磁盘通常以磁性复制数据，而碟片通常以激光进行光学复制数据。上述的组合也可以包含在电脑可读媒介中。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附 权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包括这些改动和变型在内。

Claims (42)

  1. 一种通信方法，其特征在于，包括：
    从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；
    向所述第一网络设备上报所述第一信息；
    其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息包括以下中的一项或多项：
    所述第一小区的标识信息、所述第一小区对应的索引信息、所述终端设备成功接入所述第一小区时所述第一小区对应的信号质量、成功原因值、或，所述第一小区满足小区选择准则且接入成功的指示信息；
    其中，所述第一小区属于所述第一网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
  2. 如权利要求1所述的方法，其特征在于，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
    所述终端设备成功接入所述第一小区时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
  3. 如权利要求1或2所述的方法，其特征在于，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
    所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
  4. 如权利要求1或2所述的方法，其特征在于，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
    时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出所述第一小区的时间段，
    时间段3，所述时间段3为所述终端设备确定出所述第一小区到所述终端设备成功接 入所述第一小区的时间段，
    时间段4，所述时间段4为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段4的时间段，
    所述时间段1至所述时间段4中任意两个或两个以上的连续时间段构成的时间段。
  5. 如权利要求1或2所述的方法，其特征在于，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下至少一项：
    时间段5，所述时间段5为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
    时间段6，所述时间段6为所述终端设备收到传统切换消息到传统切换失败的时间段，
    时间段7，所述时间段7为传统切换失败到所述终端设备确定出所述第一小区的时间段，
    时间段8，所述时间段8为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
    时间段9，所述时间段9为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段9的时间段，或，
    所述时间段5至所述时间段9中任意两个或两个以上的连续时间段构成的时间段。
  6. 如权利要求1-3任一所述的方法，其特征在于，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    时间段10，所述时间段10为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
    时间段11，所述时间段11为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
    时间段12，所述时间段12为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
    时间段13，所述时间段13为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
    时间段14，所述时间段14为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段14的时间段，或，
    所述时间段10至所述时间段14中任意两个或两个以上的连续时间段构成的时间段。
  7. 如权利要求1-6任一所述的方法，其特征在于，所述从第一网络设备接收第一指示信息之前，还包括：
    接收用于指示记录所述第一信息的指示信息。
  8. 如权利要求7所述的方法，其特征在于，所述从第一网络设备接收第一指示信息之前，还包括：
    向所述第一网络设备发送用于指示已经完成所述第一信息的记录的指示信息。
  9. 一种通信方法，其特征在于，包括：
    从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信 息；
    向所述第一网络设备上报所述第一信息；
    其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息包括以下中的一项或多项：
    所述第一小区的标识信息、所述第一小区对应的索引信息、所述第一小区对应的条件切换配置信息、所述终端设备接入所述第一小区失败时所述第一小区对应的信号质量、失败原因值、或，所述第一小区满足小区选择准则且接入失败的指示信息；
    其中，所述第一网络设备为重建立小区所属的网络设备、或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
  10. 如权利要求9所述的方法，其特征在于，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，
    所述终端设备接入所述第一小区失败时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量，或，
    所述终端设备执行重建立流程时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
  11. 如权利要求9所述的方法，其特征在于，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
    所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
  12. 如权利要求9或10所述的方法，其特征在于，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
    时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出第一小区的时间段，
    时间段3，所述时间段3为所述终端设备确定出第一小区到所述终端设备接入所述第一小区失败的时间段，
    时间段4，所述时间段4为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
    时间段5，所述时间段5为所述终端设备确定出重建立小区到所述终端设备上报所述时间段5的时间段，或，
    所述时间段1至所述时间段5中任意两个或两个以上的连续时间段构成的时间段。
  13. 如权利要求9或10所述的方法，其特征在于，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    时间段6，所述时间段6为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
    时间段7，所述时间段7为所述终端设备收到传统切换消息到传统切换失败的时间段，
    时间段8，所述时间段8为传统切换失败到所述终端设备确定出所述第一小区的时间段，
    时间段9，所述时间段9为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
    时间段10，所述时间段10为所述终端设备接入所述第一小区失败到所述终端设备确定重建立小区的时间段，
    时间段11，所述时间段11为所述终端设备确定出重建立小区到所述终端设备上报所述时间段11的时间段，或，
    所述时间段6至所述时间段11中任意两个或两个以上的连续时间段构成的时间段。
  14. 如权利要求9-11任一所述的方法，其特征在于，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    时间段12，所述时间段12为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
    时间段13，所述时间段13为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
    时间段14，所述时间段14为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
    时间段15，所述时间段15为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
    时间段16，所述时间段16为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
    时间段17，所述时间段17为所述终端设备确定出重建立小区到所述终端设备上报所述时间段17的时间段，或
    所述时间段12至所述时间段17中任意两个或两个以上的连续时间段构成的时间段。
  15. 如权利要求9-14任一所述的方法，其特征在于，所述从第一网络设备接收第一指示信息之前，还包括：
    接收用于指示记录所述第一信息的指示信息。
  16. 如权利要求15所述的方法，其特征在于，所述从第一网络设备接收第一指示信息之前，还包括：
    向所述第一网络设备发送用于指示已经完成所述第一信息的记录的指示信息。
  17. 一种通信方法，其特征在于，包括：
    第一网络设备向终端设备发送第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；
    所述第一网络设备从所述终端设备接收所述第一信息；
    其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息包括以下中的一项或多项：
    所述第一小区的标识信息、所述第一小区对应的索引信息、所述终端设备成功接入所述第一小区时所述第一小区对应的信号质量、成功原因值、或，所述第一小区满足小区选择准则且接入成功的指示信息；
    其中，所述第一小区属于所述第一网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
  18. 如权利要求17所述的方法，其特征在于，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
    所述终端设备成功接入所述第一小区时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
  19. 如权利要求17所述的方法，其特征在于，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
    所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
  20. 如权利要求17或18所述的方法，其特征在于，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
    时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出所述 第一小区的时间段，
    时间段3，所述时间段3为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
    时间段4，所述时间段4为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段4的时间段，或，
    所述时间段1至所述时间段4中任意两个或两个以上的连续时间段构成的时间段。
  21. 如权利要求17或18所述的方法，其特征在于，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    时间段5，所述时间段5为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
    时间段6，所述时间段6为所述终端设备收到传统切换消息到传统切换失败的时间段，
    时间段7，所述时间段7为传统切换失败到所述终端设备确定出所述第一小区的时间段，
    时间段8，所述时间段8为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
    时间段9，所述时间段9为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段9的时间段，或，
    所述时间段5至所述时间段9中任意两个或两个以上的连续时间段构成的时间段。
  22. 如权利要求17-19任一所述的方法，其特征在于，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备成功接入至所述第一小区的情形下，所述第一信息还包括以下中的一项或多项：
    时间段10，所述时间段10为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
    时间段11，所述时间段11为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
    时间段12，所述时间段12为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
    时间段13，所述时间段13为所述终端设备确定出所述第一小区到所述终端设备成功接入所述第一小区的时间段，
    时间段14，所述时间段14为所述终端设备成功接入所述第一小区到所述终端设备上报所述时间段14的时间段，或，
    所述时间段10至所述时间段14中任意两个或两个以上的连续时间段构成的时间段。
  23. 如权利要求17-22任一所述的方法，其特征在于，所述向终端设备发送第一指示信息之前，还包括：
    从所述终端设备接收用于指示已经完成所述第一信息的记录的指示信息。
  24. 一种通信方法，其特征在于，包括：
    第一网络设备向终端设备发送第一指示信息，所述第一指示信息用于请求所述终端设备上报第一信息；
    所述第一网络设备从所述终端设备接收所述第一信息；
    其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息包括以下中的一项或多项：
    所述第一小区的标识信息、所述第一小区对应的索引信息、所述第一小区对应的条件切换配置信息、所述终端设备接入所述第一小区失败时所述第一小区对应的信号质量、失败原因值、或，所述第一小区满足小区选择准则且接入失败的指示信息；
    其中，所述第一网络设备为重建立小区所属的网络设备、或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
  25. 如权利要求24所述的方法，其特征在于，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    所述终端设备确定出所述第一小区时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，
    所述终端设备接入所述第一小区失败时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量，或，
    所述终端设备执行重建立流程时，所述至少一个候选小区中除所述第一小区之外的部分或全部候选小区对应的信号质量。
  26. 如权利要求24所述的方法，其特征在于，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    所述第一候选小区对应的条件切换的执行条件满足时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量，或，
    所述终端设备与所述第一候选小区接入失败时，所述至少一个候选小区中的部分或全部候选小区对应的信号质量。
  27. 如权利要求24或25所述的方法，其特征在于，在所述终端设备的源小区发生无线链路失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    时间段1，所述时间段1为所述终端设备收到所述RRC重配置消息到所述源小区发生无线链路失败的时间段，
    时间段2，所述时间段2为所述源小区发生无线链路失败到所述终端设备确定出第一小区的时间段，
    时间段3，所述时间段3为所述终端设备确定出第一小区到所述终端设备接入所述第一小区失败的时间段，
    时间段4，所述时间段4为所述终端设备接入所述第一小区失败到所述终端设备确定 出重建立小区的时间段，
    时间段5，所述时间段5为所述终端设备确定出重建立小区到所述终端设备上报所述时间段5的时间段，或，
    所述时间段1至所述时间段5中任意两个或两个以上的连续时间段构成的时间段。
  28. 如权利要求24或25所述的方法，其特征在于，在传统切换失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    时间段6，所述时间段6为所述终端设备收到所述RRC重配置消息到所述终端设备收到传统切换消息的时间段，
    时间段7，所述时间段7为所述终端设备收到传统切换消息到传统切换失败的时间段，
    时间段8，所述时间段8为传统切换失败到所述终端设备确定出所述第一小区的时间段，
    时间段9，所述时间段9为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
    时间段10，所述时间段10为所述终端设备接入所述第一小区失败到所述终端设备确定重建立小区的时间段，
    时间段11，所述时间段11为所述终端设备确定出重建立小区到所述终端设备上报所述时间段11的时间段，或，
    所述时间段6至所述时间段11中任意两个或两个以上的连续时间段构成的时间段。
  29. 如权利要求24-26任一所述的方法，其特征在于，在所述终端设备与满足条件切换的执行条件的第一候选小区接入失败，所述终端设备进行小区选择后选择出的第一小区属于至少一个候选小区，且所述终端设备接入所述第一小区失败的情形下，所述第一信息还包括以下中的一项或多项：
    时间段12，所述时间段12为所述终端设备收到所述RRC重配置消息到所述终端设备确定出满足条件切换的执行条件的所述第一候选小区的时间段，
    时间段13，所述时间段13为所述终端设备确定出满足条件切换的执行条件的所述第一候选小区到所述终端设备与所述第一候选小区接入失败的时间段，
    时间段14，所述时间段14为所述终端设备与所述第一候选小区接入失败到所述终端设备确定出所述第一小区的时间段，
    时间段15，所述时间段15为所述终端设备确定出所述第一小区到所述终端设备接入所述第一小区失败的时间段，
    时间段16，所述时间段16为所述终端设备接入所述第一小区失败到所述终端设备确定出重建立小区的时间段，
    时间段17，所述时间段17为所述终端设备确定出重建立小区到所述终端设备上报所述时间段17的时间段，或，
    所述时间段12至所述时间段17中任意两个或两个以上的连续时间段构成的时间段。
  30. 如权利要求24-29任一所述的方法，其特征在于，所述向终端设备发送第一指示信息之前，还包括：
    从所述终端设备接收用于指示已经完成所述第一信息的记录的指示信息。
  31. 一种通信方法，其特征在于，包括：
    从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；
    向所述第一网络设备上报所述第一信息；
    其中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：第一候选小区的标识信息、第一候选小区对应的索引信息、所述终端设备成功接入所述第一候选小区时所述第一候选小区对应的信号质量、成功原因值、第一候选小区满足条件切换的执行条件且接入成功的指示信息、或，所述终端设备成功接入第一候选小区时的所述至少一个候选小区中除第一候选小区之外的其他候选小区中的部分或全部候选小区对应的信号质量；
    其中，所述第一网络设备为第一候选小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
  32. 一种通信方法，其特征在于，包括：
    从第一网络设备接收第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；
    向所述第一网络设备上报所述第一信息；
    其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息包括以下中的一项或多项：重建立小区的小区标识信息、执行重建立流程时重建立小区对应的信号质量、重建立原因值、所述终端设备进行小区选择后选择出的小区虽满足小区选择准则但不属于至少一个候选小区的指示信息、或，所述终端设备执行重建立流程时至少一个候选小区中的部分或全部候选小区对应的信号质量；
    其中，所述第一网络设备为重建立小区所属的网络设备或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
  33. 一种通信方法，其特征在于，包括：
    第一网络设备向终端设备发送第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；
    所述第一网络设备从所述终端设备接收所述第一信息；
    其中，在所述终端设备接收到包含条件切换配置信息的RRC消息后，确定出满足条件切换的执行条件的第一候选小区，且所述终端设备与所述第一候选小区的接入成功的情形下，所述第一信息包括以下中的一项或多项：第一候选小区的标识信息、第一候选小区对应的索引信息、所述终端设备成功接入所述第一候选小区时所述第一候选小区对应的信号质量、成功原因值、第一候选小区满足条件切换的执行条件且接入成功的指示信息、或，所述终端设备成功接入第一候选小区时的所述至少一个候选小区中除第一候选小区之外的其他候选小区中的部分或全部候选小区对应的信号质量；
    其中，所述第一网络设备为第一候选小区所属的网络设备，所述至少一个候选小区由 来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
  34. 一种通信方法，其特征在于，包括：
    第一网络设备向终端设备发送第一指示信息，所述第一指示信息用于请求终端设备上报第一信息；
    所述第一网络设备从所述终端设备接收所述第一信息；
    其中，在所述终端设备的源小区发生无线链路失败、或传统切换失败、或所述终端设备与满足条件切换的执行条件的第一候选小区接入失败、且进行小区选择后选择出的小区不属于至少一个候选小区的情形下，所述第一信息包括以下中的一项或多项：重建立小区的小区标识信息、执行重建立流程时重建立小区对应的信号质量、重建立原因值、终端设备进行小区选择后选择出的小区虽满足小区选择准则但不属于至少一个候选小区的指示信息、或，所述终端设备执行重建立流程时至少一个候选小区中的部分或全部候选小区对应的信号质量；
    其中，所述第一网络设备为重建立小区所属的网络设备或RRC建立过程中的小区所属的网络设备，所述至少一个候选小区由来自第二网络设备的RRC重配置消息指示，所述第二网络设备为所述源小区所属的网络设备，所述第一候选小区为所述至少一个候选小区中的一个。
  35. 一种通信装置，其特征在于，包括：处理器和接口电路，所述接口电路用于与其它装置通信，所述处理器用于执行权利要求1-8、17-23、31、32任一所述的方法。
  36. 一种通信装置，其特征在于，包括：处理器和接口电路，所述接口电路用于与其它装置通信，所述处理器用于执行权利要求9-16、24-30、33、34任一所述的方法。
  37. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储程序，所述程序被处理器调用时，权利要求1-34任一所述的方法被执行。
  38. 一种计算机程序，其特征在于，当所述程序被处理器调用时，权利要求1-34任一所述的方法被执行。
  39. 一种通信系统，其特征在于，包括用于执行如权利要求1-8任一所述方法的终端设备，和，用于执行如权利要求17-23任一所述方法的网络设备。
  40. 一种通信系统，其特征在于，包括用于执行如权利要求9-16任一所述方法的终端设备，和，用于执行如权利要求24-30任一所述方法的网络设备。
  41. 一种通信系统，其特征在于，包括用于执行如权利要求31所述方法的终端设备，和，用于执行如权利要求33所述方法的网络设备。
  42. 一种通信系统，其特征在于，包括用于执行如权利要求32所述方法的终端设备，和，用于执行如权利要求34所述方法的网络设备。
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