WO2013189220A1 - Tdd上下行配置的更新方法及装置和tdd重配置信息的通知方法及装置 - Google Patents
Tdd上下行配置的更新方法及装置和tdd重配置信息的通知方法及装置 Download PDFInfo
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- WO2013189220A1 WO2013189220A1 PCT/CN2013/075631 CN2013075631W WO2013189220A1 WO 2013189220 A1 WO2013189220 A1 WO 2013189220A1 CN 2013075631 W CN2013075631 W CN 2013075631W WO 2013189220 A1 WO2013189220 A1 WO 2013189220A1
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- tdd
- reconfiguration information
- tdd reconfiguration
- uplink
- downlink configuration
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
Definitions
- Method and device for updating TDD uplink and downlink configuration and method and device for notifying TDD reconfiguration information
- the present invention relates to the field of communications, and in particular, to a method and apparatus for updating a time division duplex (TDD) uplink and downlink configuration and a method and apparatus for notifying TDD reconfiguration information.
- TDD time division duplex
- LTE Long Term Evolution
- Wimax Worldwide Interoperability for Microwave Access
- UMB Ultra Mobile Broadband
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- the uplink and downlink use different frequency bands for data transmission at the same time
- the uplink and downlink use the same frequency band for time-sharing data transmission.
- the uplink and downlink of the wireless air interface transmission generally transmit data in units of radio frames, wherein each radio frame consists of several sub- Frame (Subframe) composition.
- each radio frame consists of several sub- Frame (Subframe) composition.
- the subframes are all based on Orthogonal Frequency Division Multiplexing (OFDM) symbols, and each radio frame is composed of 10 subframes.
- OFDM Orthogonal Frequency Division Multiplexing
- the resource allocation of the uplink/downlink subframes of the FDD system is relatively independent, that is, resource allocation can be performed separately for the downlink subframe and the uplink subframe.
- several subframes in a radio frame may be allocated as an uplink subframe and a downlink subframe according to a certain ratio according to the needs of the service.
- TDD Time Division Duplex
- TD-LTE LTE TDD
- seven modes are set for the uplink and downlink configuration of the TDD system, and each mode may be referred to as a TDD uplink and downlink configuration identifier, as shown in the first column of Table 1.
- Table 1 a radio frame contains 10 subframes, and the subframe numbers are respectively labeled: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, where "D" indicates the subframe.
- the subframe It is a downlink subframe; "U” indicates that the subframe is an uplink subframe; “S” indicates that the subframe is a special subframe, that is, the subframe includes a downlink transmission portion, a guard interval, and an uplink transmission portion.
- the TDD uplink and downlink configuration identifier is 1, that is, the TDD uplink and downlink configuration 1 is: the 0th, 4th, 5th, and 9th subframes in a radio frame are downlink subframes; the first and sixth subframes are special sub-frames.
- Frame; subframes 2, 3, 7, and 8 are uplink subframes.
- Table 1 List of existing uplink and downlink configurations in the TD-LTE system
- the configuration of the uplink and downlink subframes is mainly based on the fact that the downlink data service in the multimedia service is usually more than the uplink data service.
- SIB1 System Information Block Type 1
- the transmission period of SIB1 is 80ms, and in order to ensure the correct reception of the cell edge users, the same transmission is repeated three times in one transmission period.
- FIG. 1 is a schematic diagram of system information change in an existing TD-LTE system, in an nth broadcast control channel (Broadcast Control Channel, BCCH) change period, that is, in the BCCH change period (n), if the system information indicated by the vertical type of the shadow type is to be changed in the n+1th BCCH change period, the shadow type is changed to a point.
- BCCH Broadcast Control Channel
- the system information indicated by the network the network side needs to notify the user equipment (UE, User Equipment) during the BCCH change period (n) that a certain system information will change in the next BCCH change period, indicating that the UE is ready for the next BCCH.
- the beginning of the change cycle receives updated system information.
- the network side when the network side needs to change the system information, it can only change at the boundary of the BCCH change period, and it is necessary to use the paging message in advance to inform the UE that the system message is about to change in the next BCCH change period.
- the uplink and downlink configuration changes are not timely, which may result in the fact that the proportion of the downlink traffic does not match the ratio of the currently used TDD uplink and downlink subframes.
- the current cell uses TDD uplink and downlink configuration 4, and the ratio of uplink and downlink subframes is 1:4. If the uplink traffic in the cell increases in a certain period of time, the uplink service may be delayed due to insufficient uplink resources, and some downlink resources may be caused. Idle, resulting in wasted downlink resources. Summary of the invention
- the embodiment of the present invention provides a method and device for updating the TDD uplink and downlink configuration, and a method and a device for notifying the TDD reconfiguration information, so as to at least solve the above problem. problem.
- An embodiment of the present invention provides an update method for a time division duplex (TDD) uplink and downlink configuration, including:
- the user equipment After receiving the TDD reconfiguration information sent by the network side, the user equipment (UE) immediately determines the time period of the TDD uplink and downlink configuration indicated by the received TDD reconfiguration information, and uses the received time period in the time period.
- the step of determining, by the UE, the time period of the TDD uplink and downlink configuration indicated by using the received TDD reconfiguration information the UE determining to use the received TDD reconfiguration information in one of the following time periods Indicated TDD uplink and downlink configuration:
- the step of the UE receiving the TDD reconfiguration information sent by the network side includes: receiving, by the UE, the TDD reconfiguration information sent by the network side in one of the following messages: System information block type 1 (SIB1) message,
- SIB1 System information block type 1
- Radio Resource Control (RRC) reconfiguration message and
- the method further includes:
- the network side does not change the value of the system information value tag in the SIB1 message.
- the step of the UE receiving the TDD reconfiguration information sent by the network side includes:
- the UE immediately follows the indication of the TDD reconfiguration information indicated in the SIB1 message.
- the UE reads the TDD reconfiguration information in the SIB message carrying the TDD reconfiguration information.
- the TDD reconfiguration information includes one of the following: a TDD uplink and downlink configuration identifier or an uplink and downlink configuration of all subframes in one radio frame.
- the TDD reconfiguration information further includes one of the following contents: Using a starting radio frame number of the TDD uplink and downlink configuration indicated in the TDD reconfiguration information; using a starting radio frame number and an ending radio frame number of the TDD uplink and downlink configuration indicated in the TDD reconfiguration information;
- the method further includes:
- the UE When reporting the UE capability to the network side, the UE simultaneously reports the TDD reconfiguration function supported by the UE.
- the method before the step of the UE receiving the TDD reconfiguration information sent by the network side, the method further includes:
- the network side sends an open message to the UE, and controls the UE to enable the TDD reconfiguration function.
- the method further includes:
- the network side sends off information to the UE, and controls the UE to close the TDD reconfiguration function.
- the embodiment of the invention further provides an update device for the time division duplex (TDD) uplink and downlink configuration, which is located at the user equipment, and includes:
- a receiving module configured to receive TDD reconfiguration information sent by the network side
- An execution module configured to: immediately determine, after the receiving module receives the TDD reconfiguration information, a time period of using the received TDD uplink and downlink configuration indicated by the received TDD reconfiguration information, and in the time period TDD up and down indicated by the received TDD reconfiguration information received Or the TDD uplink and downlink configuration indicated by the received TDD reconfiguration information is used immediately after the receiving module receives the TDD reconfiguration information.
- the execution module determines a TDD uplink and downlink configuration indicated by using the received TDD reconfiguration information in one of the following time periods:
- BCCH broadcast control channel
- the receiving module is configured to receive the TDD reconfiguration information that is sent by the network side and is carried in one of the following messages:
- SIB1 System Information Block Type 1
- Radio Resource Control (RRC) reconfiguration message and
- the receiving module includes:
- a first receiving unit configured to: receive a paging message, where the paging message includes an indication that the defined SIB message changes;
- a second receiving unit configured to: receive an SIB message that carries the TDD reconfiguration information according to a mapping relationship between the SIB message and the system information (SI) message that carries the TDD reconfiguration information indicated in the SIB1 message; as well as
- SI system information
- a reading unit configured to: read the TDD reconfiguration information in the SIB message carrying the TDD reconfiguration information.
- the embodiment of the invention further provides a notification method for time division duplex (TDD) reconfiguration information, including: The network side determines that the current TDD uplink and downlink configuration needs to be changed.
- TDD time division duplex
- the network side sends the TDD reconfiguration information to the user equipment (UE) having the TDD reconfiguration function in the local cell, where the changed TDD uplink and downlink configuration is indicated in the TDD reconfiguration information.
- UE user equipment
- the step of the network side transmitting the TDD reconfiguration information to the UE that has the TDD reconfiguration function in the local cell includes: the network side carrying the TDD reconfiguration information in one of the following messages, and sending the The UE of the cell:
- SIB1 System Information Block Type 1
- Radio Resource Control (RRC) reconfiguration message
- the method further includes:
- the network side does not change the value of the system information value tag in the SIB1 message.
- the TDD reconfiguration information includes one of the following: a TDD uplink and downlink configuration identifier or an uplink and downlink configuration of all subframes in one radio frame.
- the TDD reconfiguration information further includes one of the following contents:
- the embodiment of the present invention further provides a notification device for time division duplex (TDD) reconfiguration information, which is located on the network side, and includes:
- Determining a module which is configured to: determine that the current TDD uplink and downlink configuration needs to be changed, and determine the changed TDD uplink and downlink configuration;
- a sending module configured to: send the TDD reconfiguration information to a user equipment (UE) that has a TDD reconfiguration function in the cell, where the changed TDD uplink and downlink configuration is indicated in the TDD reconfiguration information .
- UE user equipment
- the sending module is configured to carry the TDD reconfiguration information in the UE sent to the local cell in one of the following messages:
- SIB1 System Information Block Type 1
- Radio Resource Control (RRC) reconfiguration message and
- the network side can be sent when the TDD uplink and downlink configuration needs to be changed.
- the TDD reconfiguration information is used to indicate the TDD uplink and downlink configuration of the UE after the UE is changed, so that the UE can obtain the changed TDD uplink and downlink configuration in time, and use the changed TDD uplink and downlink configuration, thereby avoiding the TDD uplink and downlink configuration and current.
- FIG. 1 is a schematic diagram of system information change in a conventional TD-LTE system.
- FIG. 2 is a flowchart of a method for updating an uplink and downlink configuration of a TDD according to Embodiment 1 of the present invention.
- FIG. 3 is a schematic structural diagram of an apparatus for updating an uplink and downlink configuration of a TDD according to Embodiment 2 of the present invention; Figure.
- FIG. 4 is a schematic structural diagram of an updating apparatus of a TDD uplink and downlink configuration according to a preferred embodiment of the second embodiment of the present invention.
- FIG. 5 is a flowchart of a method for notifying TDD reconfiguration information according to Embodiment 3 of the present invention.
- Figure 6 is a block diagram showing the structure of a notification device for TDD reconfiguration information according to a fourth embodiment of the present invention.
- FIG. 7 is a flowchart of TDD uplink and downlink configuration update according to Embodiment 5 of the present invention.
- FIG. 8 is a flowchart of TDD uplink and downlink configuration update according to Embodiment 6 of the present invention.
- FIG. 9 is a flowchart of TDD uplink and downlink configuration update according to Embodiment 7 of the present invention.
- FIG. 10 is a flowchart of TDD uplink and downlink configuration update according to Embodiment 8 of the present invention.
- FIG. 11 is a flowchart of TDD uplink and downlink configuration update according to Embodiment 9 of the present invention.
- FIG. 2 is a flowchart of a method for updating an uplink and downlink configuration of a TDD according to an embodiment of the present invention. As shown in FIG. 2, the method mainly includes the following steps.
- Step S202 The UE receives TDD reconfiguration information sent by the network side (for example, an eNB in the TD-LTE system).
- the network side for example, an eNB in the TD-LTE system.
- the manner in which the network side sends the TDD reconfiguration information includes but is not limited to the following sending manners:
- SIB1 System Information Block Type 1
- RRC Radio Resource Control
- the SIB1 message is The value of the system information value tag (SystemlnfoValueTag) does not change.
- the UE When the SIB message is carried, if the paging message received by the UE includes an indication of a new SIB message change, the UE immediately receives the mapping relationship between the new SIB message and the SI message that carries the TDD reconfiguration information in the SIB1 message. New SIB messages and read new TDD reconfiguration information.
- the TDD reconfiguration information includes: TDD uplink and downlink configuration identifiers, for example, seven uplink and downlink configuration identifiers in Table 1; or upper and lower of all subframes in one radio frame Line configuration.
- TDD uplink and downlink configuration may not be limited to the seven uplink and downlink configurations in Table 1, and the network side may define a new uplink and downlink configuration.
- the TDD reconfiguration information further includes one of the following contents:
- Step S204 the UE immediately determines to use the TDD reconfiguration information after receiving the TDD reconfiguration information.
- the time period of the TDD uplink and downlink configuration indicated in the received TDD reconfiguration information, and the TDD uplink and downlink configuration indicated in the received TDD reconfiguration information is used in the time period; or, the UE receives the After the TDD reconfiguration information is described, the TDD uplink and downlink configuration indicated in the received TDD reconfiguration information is used immediately.
- the time period determined by the UE includes but is not limited to:
- a time period indicated in the TDD reconfiguration information for example, a time period from a start radio frame indicated in the TDD reconfiguration information to an end radio frame indicated in the TDD reconfiguration information
- the UE may simultaneously report the TDD reconfiguration function supported by the UE when reporting the UE capability to the network side.
- the network side may control the UE to enable or disable the TDD reconfiguration function by sending an on/off message to the UE.
- the UE may receive the TDD reconfiguration information delivered by the network side, and use the uplink and downlink configuration indicated by the TDD reconfiguration information in a suitable time period, thereby implementing dynamic configuration of the TDD. , increase the frequency of TDD uplink and downlink configuration changes, The problem that the TDD uplink and downlink configuration does not match the current uplink and downlink traffic volume and causes service delay and/or resource waste is avoided.
- the network side can indicate the uplink and downlink configuration of all the subframes in the radio in the TDD reconfiguration information, the flexible uplink and downlink configuration can be adopted, and is not limited to the seven uplink and downlink configurations shown in Table 1.
- the embodiment provides an update device for the TDD uplink and downlink configuration, and the device is located in the user equipment, and can be used to implement the method in the first embodiment.
- FIG. 3 is a schematic structural diagram of an apparatus for updating an uplink and downlink configuration of a TDD according to an embodiment of the present invention.
- the apparatus includes: a receiving module 310, configured to: receive a TDD reconfiguration that is sent by the network side at any time.
- the execution module 330 is coupled to the receiving module 310, and is configured to: immediately after receiving the TDD reconfiguration information, the receiving module 310 determines the time of the TDD uplink and downlink configuration indicated by the received TDD reconfiguration information.
- the receiving module 310 immediately uses the received TDD The TDD uplink and downlink configuration indicated by the reconfiguration information.
- the execution module 330 determines that the uplink and downlink configuration indicated by the received TDD reconfiguration information is used in one of the following time periods: a next broadcast control channel (BCCH) change period, The time period indicated by the TDD reconfiguration information, from the time indicated by the TDD reconfiguration information to the time indicated by the received new TDD reconfiguration information, and from the beginning of the next BCCH change period The time comes between the end of the BCCH change period in which the new TDD reconfiguration information is received.
- BCCH broadcast control channel
- the receiving module 310 may be configured to receive the TDD reconfiguration information carried by the network side at any time and carried in one of the following messages: System information block type 1 (SIB1) a message, an SIB message defined for the TDD reconfiguration information, a Radio Resource Control (RRC) reconfiguration message, and an RRC message defined for the TDD reconfiguration information.
- SIB1 System information block type 1
- RRC Radio Resource Control
- the receiving module 310 when the TDD reconfiguration information is carried in the SIB message defined for the TDD reconfiguration information, as shown in FIG. 4, the receiving module 310 includes: a first receiving unit 312. Is configured to: receive a paging message, where the paging message includes The second receiving unit 314 is coupled to the first receiving unit 312, and configured to: according to the SIB message and system information that carries the TDD reconfiguration information indicated in the SIB1 message ( SI) a mapping relationship of the message, receiving the SIB message carrying the TDD reconfiguration information; and a reading unit 316 coupled with the second receiving unit 314, configured to: read the SIB message carrying the TDD reconfiguration information The TDD reconfiguration information.
- SI SI1 message
- the information carried in the TDD reconfiguration information may be as described in the first embodiment, and details are not described herein.
- the embodiment of the invention provides a method for notifying the TDD reconfiguration information, which is applied to the network side and can be configured and used in the method provided in the first embodiment.
- FIG. 5 is a flowchart of a method for notifying TDD reconfiguration information according to an embodiment of the present invention. As shown in FIG. 5, the method mainly includes the following steps:
- Step S502 The network side determines that the current TDD uplink and downlink configuration needs to be changed, and determines the changed TDD uplink and downlink configuration.
- the network side can determine whether it is necessary to change the current TDD uplink and downlink configuration and determine the change according to the long-term statistics of the operator, the current uplink and downlink data to be transmitted on the network side, and other strategic factors. After the uplink and downlink configuration.
- Step S504 The network side sends TDD reconfiguration information to the UE that has the TDD reconfiguration function in the local cell, where the TDD uplink configuration is indicated in the TDD reconfiguration information.
- the UE having the TDD reconfiguration function is not only capable of using the TDD uplink and downlink configuration of the local cell broadcasted by the SIB1 message on the network side, but also the UE configured by the TDD uplink and downlink indicated by the TDD reconfiguration information transmitted by the network side.
- the network side there are two ways for the network side to send TDD reconfiguration information: a broadcast mode and a dedicated signaling mode.
- the target of the dedicated signaling mode is the UE with the TDD reconfiguration function. If the broadcast mode is used, only the UE with the TDD reconfiguration function can receive the TDD reconfiguration information.
- the network side may carry the TDD reconfiguration information in a UE sent to the UE in one of the following messages: (1) System Information Block Type 1 (SIB1) message;
- SIB1 System Information Block Type 1
- the method when the TDD reconfiguration information is carried in an SIB message defined for the TDD reconfiguration information, the method further includes: when the TDD reconfiguration information is changed, When the system information is changed, the network side does not change the value of the system information value tag in the SIB1 message. Therefore, the number of times the TDD uplink and downlink configuration changes are not limited within the 3-hour validity period of the system information.
- the TDD reconfiguration information includes:
- the TDD uplink and downlink configuration identifiers for example, the seven uplink and downlink configuration identifiers in Table 1 above; or the uplink and downlink configurations of all subframes in a radio frame.
- the uplink and downlink configuration may not be limited to the seven uplink and downlink configurations in Table 1, and the network side may define a new uplink and downlink configuration.
- the TDD reconfiguration information further includes one of the following:
- the network side may also receive the TDD reconfiguration function supported by the UE when the UE reports the UE capability to the network side.
- the network side may control the UE to enable or disable the TDD reconfiguration function by sending on/off information to the UE.
- the network side may send the TDD reconfiguration information when the TDD uplink and downlink configuration needs to be changed, and indicate the TDD uplink and downlink configuration after the UE of the local cell is changed, so that the UE can obtain the currently used TDD in time.
- the line configuration avoids the problem that the TDD uplink and downlink configuration does not match the current uplink and downlink traffic, resulting in service delay and/or resource waste.
- the embodiment of the present invention provides a notification device for TDD reconfiguration information, which is located on the network side, and can be used to implement the method described in Embodiment 3.
- FIG. 6 is a schematic structural diagram of a notification device for TDD reconfiguration information according to an embodiment of the present invention.
- the device mainly includes: a determining module 610, configured to: determine that a current TDD uplink and downlink configuration needs to be changed, and Determining the changed TDD uplink and downlink configuration; the sending module 620 is coupled to the determining module 610, and configured to: send TDD reconfiguration information to the user equipment UE that has the TDD reconfiguration function in the cell, where the TDD reconfiguration information Indicates the changed TDD uplink and downlink configuration.
- the sending module 620 is configured to carry the TDD reconfiguration information in one of the following messages to the UE of the current cell: a system information block type 1 (SIB1) message, The SIB message defined by the TDD reconfiguration information, a Radio Resource Control (RRC) reconfiguration message, and an RRC message defined for the TDD reconfiguration information.
- SIB1 system information block type 1
- RRC Radio Resource Control
- the information in the third embodiment may be included in the TDD reconfiguration information sent by the sending module 620, and details are not described herein.
- FIG. 7 is a flowchart of the uplink and downlink configuration update of the TDD in the embodiment. As shown in FIG. 7, in the embodiment, the UE performs the TDD uplink and downlink configuration update, which mainly includes the following steps.
- Step S702 The paging message received by the UE includes a system information change information element.
- the UE When the paging message (Paging) message is received by the UE (RRC_CON ECTED), if the received Paging message includes a SystemInfo Modification Information Element (IE), it indicates the next BCCH change period (hereinafter referred to as Change cycle) System information will change. Therefore, the UE needs to receive the re-receive system information immediately after the received Paging message, and the UE in the idle state needs to receive the MIB (Master Information Block) and the SIB1 SIB8, and the UE in the connected state. Need to receive MIB, SIB1, SIB2 and SIB8.
- MIB Master Information Block
- Step S704 the UE receives the SIB1 message, and reads the TDD reconfiguration information in the SIB1 message.
- a predetermined validity period e.g. 3 hours
- the UE When the UE needs to receive the TDD reconfiguration information, for example, when the UE enters the network, and/or when the UE enters the connected state, and/or the UE receives the indication of the TDD reconfiguration function sent by the network side, and/or the UE Upon entering the network, and/or after the UE receives the Paging message indicating the change of the system information, and/or the stored system information is invalid, the UE may read the TDD reconfiguration information. In addition, the UE may also receive the SIB1 message in each change period or the sending time of each SIB1, and read the TDD reconfiguration information in the SIB1 message.
- the TDD reconfiguration information includes: a TDD uplink and downlink configuration identifier or an uplink and downlink configuration of all subframes in one radio frame.
- the TDD uplink and downlink configuration identifier is one of 0 ⁇ 6 given in the left column of Table 1.
- the uplink and downlink configuration of all subframes in a radio frame is to notify the UE of the type of ten subframes in a radio frame.
- a bitmap with a length of 20 bits is used, two bits represent one subframe, 01 represents an uplink subframe, 10 represents a downlink subframe, and 11 represents a special subframe; or a character string of length 10 is used, and different characters are respectively used.
- the TDD reconfiguration information may further include one of: using a starting radio frame number of a subframe configuration indicated in the TDD reconfiguration information; using the indication in the TDD reconfiguration information The starting radio frame number and the ending radio frame number of the subframe configuration; using the starting radio frame number and the subframe number of the subframe configuration indicated in the TDD reconfiguration information; using the subframe configuration indicated in the TDD reconfiguration information Start radio frame number, end radio frame number, start subframe number, and end subframe number; usage period of the subframe configuration indicated in the TDD reconfiguration information; and TDD The usage period and offset value of the subframe configuration indicated in the reconfiguration information.
- Step S706 the UE uses the subframe configuration indicated in the received TDD reconfiguration information.
- the UE After the UE successfully receives the TDD reconfiguration information, it needs to determine the usage time period of the subframe configuration indicated in the TDD reconfiguration information, where the time period may be any one of the following time segments:
- the subframe configuration of the TDD reconfiguration information is used by the UE in the next change period immediately after receiving the change period of the TDD reconfiguration information.
- the UE When the period of the TDD reconfiguration information is the same as the change period, the UE only needs to read the TDD reconfiguration information in the SIB1 in each change period, determine the indicated subframe configuration, and use the subtitle in the next change period. Frame configuration, while reading the new TDD reconfiguration information in the new SIB1 message in the next change cycle.
- the network side when the SIB1 message is changed, the network side needs to notify the UE by using the Paging message. Therefore, optionally, the network side can also notify the UE of the system information change by using the Paging message in each change period, so that It conforms to the existing LTE protocol definition, but the disadvantage is that the signaling overhead will be relatively large, and the power consumption for the UE will be large.
- the UE uses the subframe configuration of the TDD reconfiguration information within the time indicated by the TDD reconfiguration information.
- the TDD reconfiguration information may include: using a starting radio frame number and an ending radio frame number of the subframe configuration indicated in the TDD reconfiguration information, where the UE is represented by a starting radio frame number (SFN)
- SFN starting radio frame number
- the #0 subframe of the radio frame starts to use the subframe configuration indicated in the TDD reconfiguration information until the end of the radio frame indicated by the end of the radio frame number; or the start radio frame configured using the subframe indicated in the TDD reconfiguration information No.
- the subframe configuration indicated in the information, until the end of the radio frame of the SFN mod T T1, mod is the modulo operator; or the use period T and the offset value offset of the subframe configuration indicated in the TDD reconfiguration information, where UE from (SFN*10 +subframe number )
- the time period of the subframe configuration indicated in the TDD reconfiguration information and the offset value offset, where the UE uses the TDD from the subframe of the radio frame of (SFN* 10+subframe number ) mod T offset
- the time given in the TDD reconfiguration information is up.
- the subframe configuration in which the UE uses the reconfiguration information from the receipt of the TDD reconfiguration information until a new TDD reconfiguration information is received. After the UE correctly decodes the TDD reconfiguration information and determines its indicated subframe configuration, the subframe configuration is used immediately until the UE correctly decodes the new TDD reconfiguration information and determines a new subframe configuration.
- the subframe configuration indicated in the TDD reconfiguration information is used at the beginning of the next change period in which the TDD reconfiguration information received by the UE is located until the change period of the new TDD reconfiguration information received by the UE End it.
- FIG. 8 is a flowchart of the uplink and downlink configuration update of the TDD in the embodiment. As shown in FIG. 8, in the embodiment, the UE performs the TDD uplink and downlink configuration update, which mainly includes the following steps.
- Step S802 the UE receives a paging message, where the paging message includes TDD reconfiguration information. Change instructions.
- the UE needs to immediately according to the new SIB message and the System Information (SI) message carrying the TDD reconfiguration information indicated in the SIB1 message. Mapping the relationship, starting to receive a new SIB message carrying TDD reconfiguration information.
- SI System Information
- Step S804 the UE receives a new SIB message carrying the TDD reconfiguration information, and reads the TDD reconfiguration information therein.
- the UE When the UE needs to receive the TDD reconfiguration information, for example, when the UE enters the network, and/or when the UE enters the connected state, and/or the UE receives the indication of the TDD reconfiguration function sent by the network side, and/or the UE Upon entering the network, and/or after the UE receives the Paging message including the TDD reconfiguration information change indication, and/or the stored system information is invalid, the UE may read the TDD reconfiguration information. In addition, the UE in the idle state and/or the connected state may also receive a new SIB message carrying TDD reconfiguration information in each change period or each possible transmission moment of a new SIB message carrying TDD reconfiguration information. .
- the TDD reconfiguration information includes: a TDD uplink and downlink configuration identifier or an uplink and downlink configuration of all subframes in one radio frame.
- the TDD uplink and downlink configuration identifier is one of 0 ⁇ 6 given in the left column of Table 1.
- the uplink and downlink configuration of all subframes in a radio frame is to notify the UE of the type of ten subframes in each radio frame. For example, a bitmap with a length of 20 bits is used, two bits represent one subframe, 01 represents an uplink subframe, 10 represents a downlink subframe, and 11 represents a special subframe; or a string of length 10 is used, and different characters are respectively used. Indicates an uplink subframe, a downlink subframe, and a special subframe.
- the TDD reconfiguration information may further include one of: using a starting radio frame number of a subframe configuration indicated in the TDD reconfiguration information; using a starting radio frame number of the subframe configuration indicated in the TDD reconfiguration information and Ending the radio frame number; using the starting radio frame number and the subframe number of the subframe configuration indicated in the TDD reconfiguration information; using the starting radio frame number and the starting subframe number of the subframe configuration indicated in the TDD reconfiguration information End radio frame number and end subframe number; usage period of the subframe configuration indicated in the TDD reconfiguration information; and usage period and offset value of the subframe configuration indicated in the TDD reconfiguration information.
- Step S806 the UE uses the subframe configuration indicated in the received TDD reconfiguration information. This step is the same as step S706 in the fifth embodiment, and details are not described herein again.
- Example 7
- FIG. 9 is a flowchart of the uplink and downlink configuration update of the TDD in the embodiment. As shown in FIG. 9, in the embodiment, the UE performs the TDD uplink and downlink configuration update, which mainly includes the following steps.
- Step S902 The eNB sends TDD reconfiguration information to the UE.
- the TDD reconfiguration information can be carried in RRC proprietary signaling.
- the RRC Connection Reconfiguration message is used to carry the TDD reconfiguration message, or a new RRC signaling may be added to the existing protocol to transmit the TDD reconfiguration information.
- the eNB sends an RRC Connection Reconfiguration message or a new RRC signaling to the UE to notify the UE of TDD reconfiguration information.
- Step S904 the UE uses the subframe configuration indicated in the TDD reconfiguration information.
- step S706 This step is the same as step S706 in the fifth embodiment, and details are not described herein again.
- FIG. 10 is a flowchart of the uplink and downlink configuration update of the TDD in the embodiment. As shown in FIG. 10, in the embodiment, the UE performs the TDD uplink and downlink configuration update, which mainly includes the following steps.
- Step S1002 The UE reports that it has the capability of supporting dynamic TDD configuration.
- the non-access stratum (NAS) message informs the network that it has the capability to support the TDD configuration, and/or reports to the network side when receiving the signaling of the capability of the UE sent by the network side. I support the ability to reconfigure TDD.
- Step S1004 The network side sends a TDD reconfiguration function to the UE to enable the TDD reconfiguration function of the UE.
- the network side decides to enable the TDD reconfiguration function of the UE according to its own capability, and sends a TDD reconfiguration function enable message to the UE, which is used to enable the TDD reconfiguration function of the UE.
- Step S1006 The UE receives TDD reconfiguration information.
- Step S1008 The UE uses the subframe configuration indicated in the TDD reconfiguration information.
- step S706 This step is the same as step S706 in the fifth embodiment, and details are not described herein again.
- FIG. 11 is a flowchart of the uplink and downlink configuration update of the TDD in the embodiment. As shown in FIG. 11, in the embodiment, the UE performs the TDD uplink and downlink configuration update, which mainly includes the following steps.
- Step S1102 The UE reports the capability of supporting TDD reconfiguration.
- This step is the same as step S1002 in the eighth embodiment, and will not be described again.
- Step S1104 The UE receives the TDD reconfiguration information.
- This step is the same as that of Embodiment 8 S1006 and will not be described again.
- Step S1106 The UE uses the subframe configuration indicated in the TDD reconfiguration information.
- step S706 This step is the same as step S706 in the fifth embodiment, and details are not described herein again.
- Step S1108 The network side sends a TDD reconfiguration function off message to the UE to disable the TDD reconfiguration function of the UE.
- the network side decides to disable the TDD reconfiguration function of the UE according to its own capability, and sends a TDD reconfiguration function off message to the UE, which is used to disable the TDD reconfiguration function of the UE.
- one advantage of using TDD reconfiguration is to improve the throughput of the network. If the UE continuously receives the TDD reconfiguration information, it can ensure that the UE enters the connected state and uses the most suitable subframe immediately when communicating with the network side. Configuration, which has a big benefit in improving network throughput. Therefore, after the UE accesses the network, it tries to receive the TDD reconfiguration information, and the UE does not attempt to receive the TDD reconfiguration information until receiving the indication of the shutdown sent by the network side. If the network side needs to enable the TDD reconfiguration function of the UE according to its own capabilities, it only needs to send an open indication to the UE.
- Step SI 110 the UE no longer uses the subframe configuration in the TDD reconfiguration information, and no longer receives the TDD reconfiguration information.
- the UE After receiving the shutdown indication sent by the network side, the UE will no longer use the subframe configuration in the received TDD reconfiguration information, and instead use the TDD uplink and downlink configuration indicated in the SIB1 message. That is, the UE uses the same TDD configuration as a legacy UE that does not have the TDD reconfiguration function. The UE also no longer receives TDD reconfiguration information.
- the on/off indication may be carried by system information or RRC dedicated signaling.
- the UE can receive TDD reconfiguration information sent by the network side at any time, and use the TDD reconfiguration information to indicate in a suitable time period.
- the uplink and downlink configuration can implement the dynamic configuration of the TDD, and improve the frequency of the TDD uplink and downlink configuration changes, thereby avoiding the problem that the TDD uplink and downlink configuration does not match the current uplink and downlink traffic, resulting in service delay and/or resource waste.
- the network side can indicate the uplink and downlink configuration of all the subframes in the radio in the TDD reconfiguration information, the flexible uplink and downlink configuration can be adopted, and is not limited to the seven uplink and downlink configurations shown in Table 1.
- modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
- the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
- embodiments of the invention are not limited to any specific combination of hardware and software.
- the network side can be sent when the TDD uplink and downlink configuration needs to be changed.
- the TDD reconfiguration information is used to indicate the TDD uplink and downlink configuration of the UE after the UE is changed, so that the UE can obtain the changed TDD uplink and downlink configuration in time, and use the changed TDD uplink and downlink configuration, thereby avoiding the TDD uplink and downlink configuration and current.
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Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13807187.3A EP2866508A4 (en) | 2012-06-20 | 2013-05-15 | METHOD AND DEVICE FOR UPDATING A TDD UP AND DOWN CONFIGURATION AND METHOD AND DEVICE FOR NOTIFYING TDD RECONFIGURATION INFORMATION |
US14/410,118 US20150208382A1 (en) | 2012-06-20 | 2013-05-15 | TDD Uplink and Downlink Configuration Updating Method and Apparatus and TDD Re-Configuration Information Notification Method and Apparatus |
JP2015517590A JP6121528B2 (ja) | 2012-06-20 | 2013-05-15 | Tddアップ/ダウンリンク構成の更新方法及び装置、並びにtdd再構成情報の通知方法及び装置 |
KR1020157001539A KR20150023823A (ko) | 2012-06-20 | 2013-05-15 | Tdd 업링크/다운링크 구성의 업데이트 방법 및 장치와 tdd 재구성 정보의 알림 방법 및 장치 |
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CN201210204700.3 | 2012-06-20 | ||
CN201210204700.3A CN103517422A (zh) | 2012-06-20 | 2012-06-20 | Tdd上下行配置的更新方法及装置 |
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WO2013189220A1 true WO2013189220A1 (zh) | 2013-12-27 |
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US (1) | US20150208382A1 (zh) |
EP (1) | EP2866508A4 (zh) |
JP (1) | JP6121528B2 (zh) |
KR (1) | KR20150023823A (zh) |
CN (1) | CN103517422A (zh) |
WO (1) | WO2013189220A1 (zh) |
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US10291342B2 (en) * | 2011-02-11 | 2019-05-14 | Nokia Solutions And Networks Oy | TDD data transmission on multiple carriers with sub frames reserved for predetermined transmission directions |
CN103974422A (zh) * | 2013-02-05 | 2014-08-06 | 电信科学技术研究院 | 一种通信处理方法及装置 |
US9923690B2 (en) * | 2013-08-06 | 2018-03-20 | Texas Instruments Incorporated | Dynamic signaling of the downlink and uplink subframe allocation for a TDD wireless communication system |
CN107005817B (zh) | 2015-01-28 | 2020-09-18 | 华为技术有限公司 | 终端设备、网络设备和组通信的方法 |
CN112073942B (zh) * | 2015-07-27 | 2021-12-10 | 华为技术有限公司 | 一种传输信息的方法和设备 |
JP7074764B2 (ja) | 2017-03-16 | 2022-05-24 | 華為技術有限公司 | 送信方向構成方法、デバイス及びシステム |
US11469945B2 (en) * | 2017-04-03 | 2022-10-11 | Qualcomm Incorporated | Dynamic bandwidth configuration in narrowband communication |
CN108391466B (zh) * | 2017-05-31 | 2020-06-19 | 北京小米移动软件有限公司 | 传输数据的方法及装置 |
CN107548044A (zh) * | 2017-09-07 | 2018-01-05 | 北京佰才邦技术有限公司 | 资源分配方法、装置及接入网设备 |
SG11202006437TA (en) * | 2018-01-11 | 2020-08-28 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Resource configuration method and device, computer storage medium |
JP7152425B2 (ja) * | 2018-01-19 | 2022-10-12 | 株式会社Nttドコモ | 端末、無線通信方法及びシステム |
CN110380807B (zh) * | 2018-04-13 | 2022-01-28 | 中兴通讯股份有限公司 | 动态时间分配实现方法、装置及系统 |
CN111800802B (zh) * | 2019-08-23 | 2022-02-11 | 维沃移动通信有限公司 | 一种参数修改方法及设备 |
CN110475362B (zh) * | 2019-08-28 | 2023-05-12 | 展讯通信(上海)有限公司 | 传输资源的调整方法与设备 |
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EP1148655A1 (de) * | 2000-04-19 | 2001-10-24 | Infineon Technologies AG | Sende- und Empfangseinheit |
CN1774872A (zh) * | 2003-04-22 | 2006-05-17 | 美商内数位科技公司 | 无线通信系统中分时双工及分频双工间整合资源配置的方法及系统 |
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WO2007147231A1 (en) * | 2006-05-31 | 2007-12-27 | Nortel Networks Limited | Methods and systems for wireless networks with relays |
EP2392183A1 (en) * | 2009-01-27 | 2011-12-07 | Nokia Corp. | Method and apparatus for dynamically modifying a transmission frame |
PT2656664T (pt) * | 2010-12-20 | 2017-03-31 | ERICSSON TELEFON AB L M (publ) | Métodos e nós para o ajuste de valores de parâmetros de sistema utilizados num sistema de comunicações sem-fios |
US9602251B2 (en) * | 2012-01-27 | 2017-03-21 | Sharp Kabushiki Kaisha | Devices for reconfiguring uplink and downlink allocations in time domain duplexing wireless systems |
-
2012
- 2012-06-20 CN CN201210204700.3A patent/CN103517422A/zh active Pending
-
2013
- 2013-05-15 KR KR1020157001539A patent/KR20150023823A/ko not_active Ceased
- 2013-05-15 EP EP13807187.3A patent/EP2866508A4/en not_active Withdrawn
- 2013-05-15 JP JP2015517590A patent/JP6121528B2/ja active Active
- 2013-05-15 WO PCT/CN2013/075631 patent/WO2013189220A1/zh active Application Filing
- 2013-05-15 US US14/410,118 patent/US20150208382A1/en not_active Abandoned
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EP1148655A1 (de) * | 2000-04-19 | 2001-10-24 | Infineon Technologies AG | Sende- und Empfangseinheit |
CN1774872A (zh) * | 2003-04-22 | 2006-05-17 | 美商内数位科技公司 | 无线通信系统中分时双工及分频双工间整合资源配置的方法及系统 |
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Publication number | Publication date |
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EP2866508A1 (en) | 2015-04-29 |
KR20150023823A (ko) | 2015-03-05 |
EP2866508A4 (en) | 2015-07-01 |
US20150208382A1 (en) | 2015-07-23 |
JP6121528B2 (ja) | 2017-04-26 |
CN103517422A (zh) | 2014-01-15 |
JP2015524221A (ja) | 2015-08-20 |
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