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CN112469070A - Secondary cell access method, device, terminal equipment and storage medium - Google Patents

Secondary cell access method, device, terminal equipment and storage medium Download PDF

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Publication number
CN112469070A
CN112469070A CN202011280996.8A CN202011280996A CN112469070A CN 112469070 A CN112469070 A CN 112469070A CN 202011280996 A CN202011280996 A CN 202011280996A CN 112469070 A CN112469070 A CN 112469070A
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network
secondary cell
measurement
rrc reconfiguration
cell
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CN202011280996.8A
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CN112469070B (en
Inventor
杨汉明
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Realme Mobile Telecommunications Shenzhen Co Ltd
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Realme Mobile Telecommunications Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses an auxiliary cell access method, an auxiliary cell access device, terminal equipment and a storage medium, and belongs to the technical field of communication. The method comprises the following steps: performing secondary cell measurement on a second network based on a measurement control message issued by a first network, wherein the first network and the second network adopt different network systems; reporting a cell measurement report to the first network based on a cell measurement result, and storing the measurement control message, wherein the first network is used for issuing an RRC reconfiguration message based on the cell measurement report; and in response to receiving the RRC reconfiguration message sent by the first network and the change of the target secondary cell indicated by the RRC reconfiguration message, performing secondary cell measurement again based on the stored measurement control message. By adopting the scheme provided by the embodiment of the application, the problem that the network performance of the terminal equipment is influenced because the auxiliary cell is changed and cannot be accessed to the second network when the terminal equipment is accessed to the auxiliary cell according to the RRC reconfiguration message is avoided.

Description

Secondary cell access method, device, terminal equipment and storage medium
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to an auxiliary cell access method, an auxiliary cell access device, terminal equipment and a storage medium.
Background
The networking mode of the 5G network can be divided into a Non-independent Networking (NSA) mode and an independent networking (sta, SA) mode.
In the NSA mode, when a terminal device accesses a 5G secondary cell, random access to the secondary cell is performed based on a beam included in a Radio Resource Control (RRC) reconfiguration message issued by a network. However, when the access is random, the 5G secondary cell may not be accessed due to the change of the service beam, thereby causing a problem of failure in accessing the 5G network.
Disclosure of Invention
The embodiment of the application provides a secondary cell access method, a device, terminal equipment and a storage medium. The technical scheme is as follows:
in one aspect, an embodiment of the present application provides a secondary cell access method, which is applied to a terminal device, and the method includes:
performing secondary cell measurement on a second network based on a measurement control message issued by a first network, wherein the first network and the second network adopt different network systems;
reporting a cell measurement report to the first network based on a cell measurement result, and storing the measurement control message, wherein the first network is used for issuing an RRC reconfiguration message based on the cell measurement report;
and in response to receiving the RRC reconfiguration message sent by the first network and the change of the target secondary cell indicated by the RRC reconfiguration message, performing secondary cell measurement again based on the stored measurement control message.
On the other hand, an embodiment of the present application provides a secondary cell access apparatus, which is applied to a terminal device, and the apparatus includes:
the first measurement module is used for measuring a secondary cell of a second network based on a measurement control message issued by a first network, and the first network and the second network adopt different network systems;
a storage module, configured to report a cell measurement report to the first network based on a cell measurement result, and store the measurement control message, where the first network is configured to issue an RRC reconfiguration message based on the cell measurement report;
and the second measurement module is configured to, in response to receiving the RRC reconfiguration message sent by the first network and a change in a target secondary cell indicated by the RRC reconfiguration message, perform secondary cell measurement again based on the stored measurement control message.
In another aspect, an embodiment of the present application provides a terminal device, where the terminal device includes a processor and a memory; the memory stores at least one instruction for execution by the processor to implement a secondary cell access method as described in the above aspect.
In another aspect, a computer-readable storage medium is provided, which stores at least one instruction for execution by a processor to implement the secondary cell access method as described in the above aspect.
In another aspect, embodiments of the present application provide a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to make the computer device execute the secondary cell access method provided by the above aspect.
In the embodiment of the application, after the terminal device reports the cell measurement report to the first network, the measurement control message is firstly stored, after the RRC reconfiguration message sent by the first network is received, the target secondary cell indicated in the RRC reconfiguration message is detected, and if the target secondary cell changes, secondary cell measurement is performed again based on the stored measurement control message.
Drawings
Fig. 1 illustrates a block diagram of a communication system provided by an exemplary embodiment of the present application;
fig. 2 is a flowchart illustrating a secondary cell access method according to an exemplary embodiment of the present application;
fig. 3 is a flowchart illustrating a secondary cell access method according to another exemplary embodiment of the present application;
fig. 4 is a flowchart illustrating a secondary cell access method according to another exemplary embodiment of the present application;
fig. 5 is a flowchart of a secondary cell access procedure provided by an exemplary embodiment of the present application;
fig. 6 is a block diagram illustrating a secondary cell access apparatus according to an exemplary embodiment of the present application;
fig. 7 is a block diagram illustrating a terminal device according to an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application, which may include: access network 12 and terminal equipment 13.
Several network devices 120 are included in access network 12. Network device 120 may be a base station, which is a device deployed in an access network to provide wireless communication functionality for terminal devices. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, names of devices having a base station function may be different, for example, in a Long Term Evolution (LTE) system, the device is called an evolved Node B (eNodeB) or eNB; in a 5G NR-U system, it is called gNodeB or gNB. The description of "base station" may change as communication technology evolves. For convenience of this embodiment, the above-mentioned devices providing the terminal device 13 with the wireless communication function are collectively referred to as a network device.
The terminal devices 13 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication capability, as well as various forms of user equipment, Mobile Stations (MSs), terminal devices (terminal devices), and so forth. For convenience of description, the above-mentioned devices are collectively referred to as terminal devices. The network device 120 and the terminal device 13 communicate with each other through some air interface technology, for example, a Uu interface.
The secondary cell access method provided in the embodiment of the present application is used for the terminal device 13 in the communication system shown in fig. 1, and the terminal device in the embodiment of the present application refers to a device having a dual connectivity function.
In the related art, the 5G network deployment process includes two modes of SA and NSA networking, wherein when NSA networking is adopted, an LTE/5G Dual connectivity (EN-DC) mode is mostly adopted at present. When an EN-DC networking mode is adopted, the 4G base station is used as a main base station for transmitting signaling, and the 5G base station is used as an expansion enhanced data transmission channel, so that the data transmission rate is improved. At this time, the LTE base station eNB is a Master Node (MN), and the NR base station gNB is a Secondary Node (SN); the LTE cell is a main cell, and the NR cell is an auxiliary cell.
In the access process of the 5G secondary cell, the access is usually performed based on a measurement mode. That is, the LTE network issues a measurement control message based on a B1 event, the terminal device performs measurement of a 5G secondary Cell based on the measurement control message, and reports a measurement report of a secondary Cell satisfying the B1 event to the LTE network, where the measurement report includes a Physical Cell ID (PCI) and a beam number (SSB ID) corresponding to the Cell, and after the measurement report is reported, the terminal device deletes the measurement control message. After Receiving the measurement report, the LTE network selects a cell with the largest Reference Signal Receiving Power (RSRP) in the secondary cell, and issues an RRC reconfiguration message for accessing the cell, and the terminal device performs random access on a service SSB corresponding to the cell, where the service SSB is a beam corresponding to the cell.
However, due to the instability of the 5G network, the serving SSB may change, and the terminal device may still continue to forcibly access the serving SSB indicated in the RRC reconfiguration message sent by the LTE network, thereby possibly causing the terminal device to fail to access the 5G network. In the embodiment of the application, by setting the detection module and the storage module, the service SSB is detected before the terminal device is randomly accessed to the corresponding service SSB, and if the service SSB is changed, the measurement of the 5G auxiliary cell is carried out again, and the random access is not carried out any more, so that the network access failure is avoided, and the network performance of the terminal device is not affected.
Referring to fig. 2, a flowchart of a secondary cell access method according to an exemplary embodiment of the present application is shown. The embodiment is described by taking an example that the method is executed by the terminal device shown in fig. 1, and the process includes the following steps:
step 201, performing secondary cell measurement on a second network based on a measurement control message issued by a first network, wherein the first network and the second network adopt different network systems.
The measurement control message refers to that the first network issues a relevant message about measuring a secondary cell of the second network, for example, the message includes a measurement object identifier (measObjectId) indicating a frequency point object of measurement, a measurement report identifier (reportConfigId) indicating a relevant threshold of a measurement event, and a measurement configuration entry index (measId) indicating a measurement frequency point object and a corresponding measurement report identifier.
In a possible implementation manner, after the first network issues the measurement control message related to the measurement of the secondary cell of the second network, the terminal device measures the secondary cell of the second network according to the measurement object indicated in the measurement control message and the measurement report configuration item, so as to obtain the measurement result of the secondary cell of the second network.
Step 202, reporting a cell measurement report to a first network based on the cell measurement result, and storing a measurement control message, wherein the first network is configured to issue an RRC reconfiguration message based on the cell measurement report.
In a possible implementation manner, after the terminal device performs the secondary cell measurement, the measurement result of the secondary cell that meets the indication condition in the measurement control message is reported to the first network. Optionally, the measurement result includes related parameters indicating the cell Signal strength, such as RSRP, Reference Signal Receiving Quality (RSRQ), and the like. The indication condition refers to a measurement event and an associated threshold, for example, the indication condition may be a B1 event, that is, the quality of the neighbor cell is higher than a certain threshold.
In the related art, after the terminal device reports the measurement report of the secondary cell, the measurement control message sent by the network is deleted, however, after the measurement control message is deleted, the terminal device cannot measure the secondary cell again. Therefore, in a possible implementation manner, in order to ensure that the terminal device can still continue to perform the measurement of the secondary cell, after the measurement report is reported, the measurement control message needs to be saved.
In a possible implementation manner, after the terminal device uploads the measurement report of the secondary cell to the first network, the first network selects an optimal secondary cell according to a measurement result in the cell measurement report, and issues an RRC reconfiguration message of the optimal secondary cell, where the optimal secondary cell may be a secondary cell with the largest parameter in a relevant parameter indicating cell signal strength.
Step 203, in response to receiving the RRC reconfiguration message sent by the first network and the target secondary cell indicated by the RRC reconfiguration message changes, performing secondary cell measurement again based on the stored measurement control message.
In the process of accessing the secondary cell, the target secondary cell in the RRC reconfiguration message sent by the first network may change due to the displacement of the terminal device or the instability of the second network, for example, the terminal device is displaced out of the coverage of the target secondary cell, or a signal of the target secondary cell is blocked by a building. At this time, if the secondary cell performs random access, access failure may be caused.
In order to avoid that the target secondary cell changes and cannot be accessed to the second network, in a possible implementation manner, after receiving an RRC reconfiguration message sent by the first network, the terminal device detects the target secondary cell reconfigured by the RRC, detects whether the target secondary cell changes, if the target secondary cell changes, does not access to the target secondary cell, performs measurement of the secondary cell based on the stored measurement control message again, and reports a cell measurement report to the first network.
To sum up, in the embodiment of the present application, after reporting a cell measurement report to a first network, a terminal device first stores a measurement control message, and after receiving an RRC reconfiguration message sent by the first network, detects a target secondary cell indicated in the RRC reconfiguration message, and if the target secondary cell changes, performs secondary cell measurement again based on the stored measurement control message.
Beamforming is introduced in 5G network deployment, that is, different SSBs are allocated to different beam transmissions, each SSB has different transmission time, and the transmission is performed in a round-robin transmission mode, which becomes SSB beam scanning. And 5G, the cell coverage is realized by means of beam scanning. Therefore, when the terminal device measures the SSB beam, the corresponding cell can be determined. That is, in one possible implementation, when a change in SSB is detected, it can be determined that the target secondary cell corresponding to the change has changed.
Referring to fig. 3, a flowchart of a secondary cell access method according to another exemplary embodiment of the present application is shown. The embodiment is described by taking an example that the method is executed by the terminal device shown in fig. 1, and the process includes the following steps:
step 301, performing secondary cell measurement on a second network based on a measurement control message issued by a first network, where the first network and the second network use different network systems.
Optionally, the first network may be an LTE network, and the second network may be a 5G network.
In a possible implementation manner, when a 5G secondary cell is accessed, an LTE network issues a measurement control message based on a B1 event, and a terminal device performs secondary cell measurement according to 5G frequency point information in the measurement control message. Before measurement, the terminal device measures different beams in the beam scanning process to obtain a beam with the optimal signal quality, and the terminal device and the gNB are synchronized through the SSB corresponding to the beam. The SSB in the 5G network comprises a primary synchronization signal, an auxiliary synchronization signal and a physical broadcast channel, the cell PCI can be obtained in the process of synchronizing the primary synchronization signal and the auxiliary synchronization signal, the corresponding SSB ID can be obtained in the process of synchronizing the broadcast channel, and the auxiliary cell can be measured after synchronization to obtain the measurement result of the auxiliary cell.
Illustratively, if the RSRP of the measurement control message indicating the B1 event is greater than-80 dbm, the terminal device measures the RSRP of the secondary cell.
Step 302, reporting a cell measurement report to a first network based on the cell measurement result, and storing a measurement control message, wherein the first network is configured to issue an RRC reconfiguration message based on the cell measurement report.
In a possible implementation manner, the terminal device reports the measurement result of the secondary cell satisfying the B1 event. And reporting the measurement result of the cell to the LTE network when the measured RSRP of the secondary cell is greater than-80 dbm by combining the embodiment of the step. The measurement report may include cell PC1 ID and SSB ID, and may include a plurality of secondary cell measurement results. The LTE network screens out the secondary cell with the maximum RSRP in the cell measurement report, and issues an RRC reconfiguration message about the secondary cell, wherein the RRC reconfiguration message comprises information such as SSB ID and the like corresponding to the secondary cell.
Optionally, after the measurement result is reported, the terminal device may store the measurement control message based on the B1 event, so as to perform the measurement of the 5G secondary cell based on the measurement control message in the following.
Step 303, in response to receiving the RRC reconfiguration message sent by the first network, acquiring a service SSB included in the RRC reconfiguration message.
In a possible implementation manner, after receiving the RRC reconfiguration message sent by the first network, the terminal device obtains a serving SSB included in the RRC reconfiguration message, that is, an SSB ID corresponding to the target secondary cell in the measurement report.
Step 304, performing SSB detection on the service SSB.
In the related art, after receiving the RRC reconfiguration message, the terminal device performs random access according to the SSB ID indicated in the reconfiguration message, however, since the displacement or the beam of the terminal device is blocked, the service SSB changes, and if the terminal device continues to perform random access according to the indicated SSB ID, access failure may be caused.
In a possible embodiment, after receiving the RRC reconfiguration message, the terminal first detects the serving SSB, that is, the terminal device measures a signal corresponding to the serving SSB.
In step 305, if the serving SSB is not detected, or the serving SSB is detected and RSRP of the serving SSB is lower than the RSRP threshold, it is determined that the serving SSB is changed.
In one possible implementation, the change in the service SSB is determined if the terminal device does not detect the service SSB, i.e., the terminal device cannot scan the energy of the service SSB.
In another possible implementation, if the terminal device detects the serving SSB, but the RSRP of the serving SSB is lower than the RSRP threshold, it indicates that the signal quality corresponding to the serving SSB is poor, and may also cause access failure, and therefore, when it is detected that the RSRP of the serving SSB is lower than the RSRP threshold, it is determined that the serving SSB is changed. For example, the RSRP threshold may be-120 dbm, and when the terminal device detects that the RSRP of the serving SSB is less than-120 dbm, it determines that the serving SSB has changed.
Step 306, if the serving SSB is detected and the RSRP of the serving SSB is higher than the RSRP threshold, it is determined that the serving SSB has not changed.
In one possible implementation, if the terminal device detects the serving SSB and the RSRP of the serving SSB is higher than the RSRP threshold, it is determined that the serving SSB has not changed, and a random access may be triggered on the SSB.
Step 307, if the serving SSB changes, determining that the target secondary cell changes, and performing secondary cell measurement again based on the stored measurement control message.
In a possible implementation manner, if the serving SSB changes, it is determined that the target secondary cell corresponding to the serving SSB changes, and the terminal device performs secondary cell measurement again based on the stored measurement control message.
In the embodiment of the application, the service SSB indicated in the RRC reconfiguration message is detected, if the change of the service SSB is detected, the corresponding target auxiliary cell is determined to be changed, and the terminal equipment performs measurement on the auxiliary cell again, so that the phenomenon that the network performance of the terminal equipment is influenced by forced access of the terminal equipment on the changed service SSB is avoided.
In a possible implementation, after detecting that the target secondary cell changes, the terminal device may perform secondary cell measurement again, and the measurement report may still include the target secondary cell, and the network may still continue to issue an RRC reconfiguration message related to the target secondary cell. In order to avoid that the target secondary cell cannot be accessed to the second network for a long time due to continuous change of the target secondary cell, the terminal device updates the failure times of the target secondary cell after detecting that the target secondary cell changes, and then judges whether to report the measurement result of the target secondary cell according to the updated failure times.
Referring to fig. 4, a flowchart of a secondary cell access method according to another exemplary embodiment of the present application is shown. The embodiment is described by taking an example that the method is executed by the terminal device shown in fig. 1, and the process includes the following steps:
step 401, performing secondary cell measurement on a second network based on a measurement control message issued by a first network, where the first network and the second network use different network systems.
Step 402, reporting a cell measurement report to a first network based on a cell measurement result, and storing a measurement control message, wherein the first network is configured to issue an RRC reconfiguration message based on the cell measurement report.
Step 401 to step 402 refer to step 201 to step 202, which are not described herein.
Step 403, in response to receiving the RRC reconfiguration message sent by the first network and the target secondary cell indicated by the RRC reconfiguration message changes, updating the failure times corresponding to the target secondary cell, and re-performing secondary cell measurement based on the stored measurement control message.
In a possible implementation manner, after detecting the target secondary cell indicated in the RRC reconfiguration message, if the target secondary cell changes, it indicates that the access to the target secondary cell may cause a failure in accessing the second network, and therefore, the terminal device may perform measurement of the secondary cell again based on the stored measurement control message, and update the failure times of the target secondary cell.
Step 404, in response to receiving the RRC reconfiguration message sent by the first network and the target secondary cell indicated by the RRC reconfiguration message is not changed, triggering random access and deleting the measurement control message.
In a possible implementation manner, after detecting the target secondary cell, if the target secondary cell is not changed, it indicates that the terminal device may access the target secondary cell, and then access the second network. Therefore, if the target secondary cell is not changed, the random access is triggered, and the measurement control message stored in the terminal device is deleted, so that the conflict of the measurement control message caused by the next secondary cell access is avoided.
Step 405, if the cell measurement result indicates that at least two candidate secondary cells satisfying the measurement reporting condition are included, and the candidate secondary cells include the target secondary cell, acquiring the failure times of the target secondary cell.
In a possible implementation manner, after the secondary cell is measured again based on the stored measurement control message, if at least two candidate secondary cells satisfying the measurement reporting condition are measured, the terminal device detects whether the candidate secondary cells include the target secondary cell, and if the candidate secondary cells include the target secondary cell, the failure times of the target secondary cell are obtained.
Optionally, when the network performs multiple RRC reconfiguration, where indicated target secondary cells may be different, in this embodiment of the present application, the failure number of obtaining the target secondary cell refers to the failure number of all the secondary cells detected to be changed by the terminal device before obtaining the failure number of the target secondary cell.
And step 406, if the failure times reach the first time threshold, generating a cell measurement report according to the candidate secondary cells except the target secondary cell.
Optionally, the terminal device sets a first time threshold in advance, and when the failure number of the target secondary cell reaches the first time threshold, it indicates that the secondary cell is constantly changing and its signal is unstable, so when the terminal device performs cell measurement again, if the target secondary cell is measured again and the target secondary cell still satisfies the measurement report condition, only report the measurement report of the candidate secondary cells except the target secondary cell, and the measurement result of the target secondary cell is not reported, thereby avoiding a situation that the target secondary cell is instructed to access the target secondary cell again by the RRC reconfiguration message and cannot access the second network because the target secondary cell changes.
In a possible implementation manner, if it is detected that the failure times of the target secondary cells all reach the first time threshold, the measurement results of the candidate secondary cells except the target secondary cells are selected to be reported.
Illustratively, the first time threshold may be 3, and when the number of failures of the target secondary cell reaches 3 times, if the cell measurement is performed again and the target secondary cell still includes the target secondary cell, the measurement result of the target secondary cell is not reported.
Step 407, if the failure times do not reach the first time threshold, generating a cell measurement report according to the at least two candidate secondary cells.
In a possible implementation manner, if the obtained failure frequency of the target secondary cell does not reach the first time threshold, when the terminal device detects the target secondary cell again and meets the measurement reporting condition, the reporting of the measurement result of the target secondary cell may still be continued.
It should be noted that, in this embodiment, the terminal device resets the failure times of the target secondary cell at predetermined time intervals, so as to avoid that, when the subsequent terminal device accesses the target secondary cell again after a long time, the subsequent terminal device cannot access the target secondary cell due to the stored failure times. For example, the predetermined time interval may be 6 h.
In the embodiment of the application, by detecting the failure times of the target secondary cell, when the failure times reach the first time threshold value, the measurement result of the target secondary cell is not reported, so that the situation that the target secondary cell cannot be accessed to a network due to the secondary change of the target secondary cell when the subsequent secondary cell is accessed is avoided, the situation that the target secondary cell cannot be accessed to a second network for a long time is further avoided, and the access efficiency of the secondary cell is improved.
In a possible implementation manner, after performing cell measurement on the basis of the stored measurement control message, the number of times of re-measurement is updated, and if the updated number of times of re-measurement does not reach the second number threshold, it indicates that the network environment where the terminal device is located can still continue random access to the second network, and the secondary cell measurement is performed again on the basis of the stored measurement control message.
If the updated re-measurement times reach the second time threshold, it indicates that the terminal device detects that the target secondary cell changes for multiple times, and cannot access the second network, which indicates that the network environment where the terminal device is located is unstable at this time. In order to avoid the situation that the second network cannot be accessed when re-measurement is carried out again, the terminal device displays prompt information after detecting that the updated re-measurement times reach the second time threshold value, and indicates that the network environment where the current terminal device is located is unstable.
Illustratively, the second time threshold is 5 times, and when the terminal device detects that the number of times of re-measurement reaches 5 times, a prompt message "current network is unstable" is displayed.
In an illustrative example, the terminal device secondary cell access procedure is as shown in fig. 5:
step 501, an LTE network issues an NR measurement control message;
step 502, the terminal equipment reports an NR measurement report;
step 503, the terminal device saves the NR measurement control message;
step 504, the LTE network issues an RRC reconfiguration message;
step 505, the terminal device detects whether the service SSB changes, if so, performs step 507, otherwise, performs step 506;
step 506, the terminal equipment triggers random access;
step 507, the terminal equipment acquires an NR measurement control message;
after the step 507 is completed, the execution is continued from the step 502 until the step 506 is executed.
Referring to fig. 6, a block diagram of a secondary cell access apparatus according to an embodiment of the present application is shown. The apparatus may be implemented as all or a part of the terminal device 13 in fig. 1 by software, hardware or a combination of both. The device includes:
a first measurement module 601, configured to perform secondary cell measurement on a second network based on a measurement control message issued by a first network, where the first network and the second network use different network systems;
a saving module 602, configured to report a cell measurement report to the first network based on a cell measurement result, and save the measurement control message, where the first network is configured to issue an RRC reconfiguration message based on the cell measurement report;
a second measurement module 603, configured to, in response to receiving the RRC reconfiguration message sent by the first network and that a target secondary cell indicated by the RRC reconfiguration message changes, perform secondary cell measurement again based on the stored measurement control message.
Optionally, the first network is an LTE network, and the second network is a 5G network;
optionally, the second measurement module 603 includes:
an obtaining unit, configured to obtain, in response to receiving the RRC reconfiguration message sent by the first network, a service SSB included in the RRC reconfiguration message;
a first measurement unit, configured to determine that the target secondary cell changes if the serving SSB changes, and perform secondary cell measurement again based on the stored measurement control message.
Optionally, the apparatus further comprises:
the detection module is used for carrying out SSB detection on the service SSB;
a first determining module, configured to determine that the serving SSB changes if the serving SSB is not detected, or if the serving SSB is detected and RSRP of the serving SSB is lower than an RSRP threshold;
a second determining module, configured to determine that the serving SSB has not changed if the serving SSB is detected and the RSRP of the serving SSB is higher than the RSRP threshold.
Optionally, the apparatus further comprises:
and the access module is used for triggering random access and deleting the measurement control message in response to receiving the RRC reconfiguration message sent by the first network and the target secondary cell indicated by the RRC reconfiguration message is not changed.
Optionally, the apparatus further comprises:
an update module, configured to update the number of failures corresponding to the target secondary cell in response to receiving the RRC reconfiguration message sent by the first network and a change in the target secondary cell indicated by the RRC reconfiguration message;
an obtaining module, configured to obtain the failure times of the target secondary cell if a cell measurement result indicates that at least two candidate secondary cells that satisfy a measurement reporting condition are included, and the candidate secondary cells include the target secondary cell;
a first generating module, configured to generate the cell measurement report according to the candidate secondary cells other than the target secondary cell if the failure times reach a first time threshold;
a second generating module, configured to generate the cell measurement report according to the at least two candidate secondary cells if the failure times do not reach the first time threshold.
Optionally, the apparatus includes:
a resetting module, configured to reset the failure times of the target secondary cell at predetermined time intervals.
Optionally, the second measurement module 603 further includes:
an updating unit for updating the number of times of re-measurement;
a second measurement unit, configured to, if the number of times of re-measurement does not reach a second number threshold, re-perform secondary cell measurement based on the stored measurement control message;
optionally, the apparatus further comprises:
and the display module is used for displaying prompt information if the re-measurement times reach the second time threshold, wherein the prompt information is used for prompting that the network environment where the terminal equipment is located is unstable.
To sum up, in the embodiment of the present application, after reporting a cell measurement report to a first network, a terminal device first stores a measurement control message, and after receiving an RRC reconfiguration message sent by the first network, detects a target secondary cell indicated in the RRC reconfiguration message, and if the target secondary cell changes, performs secondary cell measurement again based on the stored measurement control message.
In the embodiment of the application, the service SSB indicated in the RRC reconfiguration message is detected, if the change of the service SSB is detected, the corresponding target auxiliary cell is determined to be changed, and the terminal equipment performs measurement on the auxiliary cell again, so that the phenomenon that the network performance of the terminal equipment is influenced by forced access of the terminal equipment on the changed service SSB is avoided.
In the embodiment of the application, by detecting the failure times of the target secondary cell, when the failure times reach the first time threshold value, the measurement result of the target secondary cell is not reported, so that the situation that the target secondary cell cannot be accessed to a network due to the secondary change of the target secondary cell when the target secondary cell is subsequently accessed is avoided, the situation that the target secondary cell cannot be accessed to a second network for a long time is further avoided, and the access efficiency of the secondary cell is improved.
Referring to fig. 7, a block diagram of a terminal device according to an exemplary embodiment of the present application is shown. The terminal device in the present application may comprise one or more of the following components: a processor 701, a memory 702, a receiver 703 and a transmitter 704.
Processor 701 may include one or more processing cores. The processor 701 connects various parts within the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 702 and calling data stored in the memory 702. Alternatively, the processor 701 may be implemented in hardware using at least one of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 701 may integrate one or a combination of several of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a Neural-Network Processing Unit (NPU), a modem, and the like. Wherein, the CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing contents required to be displayed by the touch display screen; the NPU is used for realizing an Artificial Intelligence (AI) function; the modem is used to handle wireless communications. It is understood that the modem may not be integrated into the processor 701, and may be implemented by a single chip.
The Memory 702 may include a Random Access Memory (RAM) or a Read-Only Memory (ROM). Optionally, the memory 702 includes a non-transitory computer-readable medium. The memory 702 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 702 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing various method embodiments described below, and the like; the storage data area may store data (such as audio data, a phonebook) created according to the use of the terminal, and the like.
The receiver 703 and the transmitter 704 may be implemented as one communication component, which may be a communication chip.
Optionally, the terminal may further include a display screen. A display screen is a display component for displaying a user interface. Optionally, the display screen further has a touch function, and through the touch function, a user can perform touch operation on the display screen by using any suitable object such as a finger, a touch pen, and the like.
In addition, those skilled in the art will appreciate that the configurations of the terminals shown in the above-described figures do not constitute limitations on the terminal equipment, which may include more or fewer components than shown, or some components in combination, or a different arrangement of components. For example, the terminal further includes a camera module, a radio frequency circuit, an input unit, a sensor (such as an acceleration sensor, an angular velocity sensor, a light sensor, and the like), an audio circuit, a Wireless Fidelity (WiFi) module, a power supply, a bluetooth module, and other components, which are not described herein again.
The embodiment of the present application further provides a computer-readable medium, where at least one instruction is stored, and the at least one instruction is loaded and executed by a processor to implement the secondary cell access method according to the above embodiments.
Embodiments of the present application provide a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to make the computer device execute the secondary cell access method provided by the above aspect.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A secondary cell access method, wherein the method is used for a terminal device, and the terminal device supports dual connectivity, and the method comprises:
performing secondary cell measurement on a second network based on a measurement control message issued by a first network, wherein the first network and the second network adopt different network systems;
reporting a cell measurement report to the first network based on a cell measurement result, and storing the measurement control message, wherein the first network is used for issuing an RRC reconfiguration message based on the cell measurement report;
and in response to receiving the RRC reconfiguration message sent by the first network and the change of the target secondary cell indicated by the RRC reconfiguration message, performing secondary cell measurement again based on the stored measurement control message.
2. The method of claim 1, wherein the first network is an LTE network and the second network is a 5G network;
the responding to the received RRC reconfiguration message sent by the first network, and the target secondary cell indicated by the RRC reconfiguration message changes includes:
responding to the received RRC reconfiguration message sent by the first network, and acquiring a service SSB contained in the RRC reconfiguration message;
and if the service SSB changes, determining that the target secondary cell changes, and re-performing secondary cell measurement based on the stored measurement control message.
3. The method according to claim 2, wherein after the acquiring the serving SSB included in the RRC reconfiguration message, the method comprises:
performing SSB detection on the service SSB;
if the service SSB is not detected, or the service SSB is detected and the RSRP of the service SSB is lower than the RSRP threshold value, determining that the service SSB is changed;
and if the service SSB is detected and the RSRP of the service SSB is higher than the RSRP threshold value, determining that the service SSB is not changed.
4. The method according to any of claims 1 to 3, wherein after reporting the cell measurement report to the first network based on the cell measurement result and saving the measurement control message, the method further comprises:
and triggering random access and deleting the measurement control message in response to receiving the RRC reconfiguration message sent by the first network and the target secondary cell indicated by the RRC reconfiguration message is not changed.
5. The method of any of claims 1 to 3, further comprising:
updating the failure times corresponding to the target secondary cell in response to receiving the RRC reconfiguration message sent by the first network and the change of the target secondary cell indicated by the RRC reconfiguration message;
after the secondary cell measurement is performed again based on the saved measurement control message, the method further includes:
if the cell measurement result indication comprises at least two candidate secondary cells meeting measurement reporting conditions, and the candidate secondary cells comprise the target secondary cell, acquiring the failure times of the target secondary cell;
if the failure times reach a first time threshold value, generating the cell measurement report according to the candidate auxiliary cells except the target auxiliary cell;
and if the failure times do not reach the first time threshold value, generating the cell measurement report according to at least two candidate auxiliary cells.
6. The method of claim 5, further comprising:
resetting the number of failures of the target secondary cell at predetermined time intervals.
7. The method according to any of claims 1 to 3, wherein said performing the secondary cell measurement again based on the saved measurement control message comprises:
updating the re-measurement times;
if the re-measurement times do not reach a second time threshold value, re-performing secondary cell measurement based on the stored measurement control message;
the method further comprises the following steps:
and if the re-measurement times reach the second time threshold value, displaying prompt information, wherein the prompt information is used for prompting that the network environment where the terminal equipment is located is unstable.
8. An apparatus for accessing a secondary cell, the apparatus being used for a terminal device, the terminal device supporting dual connectivity, the apparatus comprising:
the first measurement module is used for measuring a secondary cell of a second network based on a measurement control message issued by a first network, and the first network and the second network adopt different network systems;
a storage module, configured to report a cell measurement report to the first network based on a cell measurement result, and store the measurement control message, where the first network is configured to issue an RRC reconfiguration message based on the cell measurement report;
and the second measurement module is configured to, in response to receiving the RRC reconfiguration message sent by the first network and a change in a target secondary cell indicated by the RRC reconfiguration message, perform secondary cell measurement again based on the stored measurement control message.
9. A terminal device, characterized in that the terminal device comprises a processor and a memory; the memory stores at least one instruction for execution by the processor to implement the secondary cell access method of any of claims 1 to 7.
10. A computer-readable storage medium having stored thereon at least one instruction for execution by a processor to implement the secondary cell access method of any of claims 1 to 7.
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