WO2025002181A1 - 一种ta获取方法及装置、终端设备、网络设备 - Google Patents

一种ta获取方法及装置、终端设备、网络设备 Download PDF

Info

Publication number
WO2025002181A1
WO2025002181A1 PCT/CN2024/101648 CN2024101648W WO2025002181A1 WO 2025002181 A1 WO2025002181 A1 WO 2025002181A1 CN 2024101648 W CN2024101648 W CN 2024101648W WO 2025002181 A1 WO2025002181 A1 WO 2025002181A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
terminal device
signaling
information
uplink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/101648
Other languages
English (en)
French (fr)
Inventor
郑毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
Original Assignee
China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Group Co Ltd, Research Institute of China Mobile Communication Co Ltd filed Critical China Mobile Communications Group Co Ltd
Priority to AU2024310215A priority Critical patent/AU2024310215A1/en
Priority to EP24830818.1A priority patent/EP4727225A1/en
Publication of WO2025002181A1 publication Critical patent/WO2025002181A1/zh
Priority to MX2025015748A priority patent/MX2025015748A/es
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0077—Transmission or use of information for re-establishing the radio link of access information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time

Definitions

  • the present application relates to the field of wireless communication technology, and in particular to a TA acquisition method and device, terminal equipment, and network equipment.
  • the terminal device In order to reduce data transmission interruption delay, the terminal device needs to perform downlink synchronization and uplink synchronization on the target cell to be switched before performing cell switching. Among them, the implementation of uplink synchronization depends on the acquisition of timing advance (TA), and how to manage the terminal device to obtain TA needs to be clarified.
  • TA timing advance
  • Embodiments of the present application provide a TA acquisition method and apparatus, terminal equipment, network equipment, chip, and computer-readable storage medium.
  • the terminal device receives a first signaling sent by a network device, where the first signaling is used to instruct, configure, or activate a first operation on a first cell, where the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization;
  • the terminal device performs a first operation on the first cell, and obtains the TA of the first cell based on the first operation.
  • the network device sends a first signaling to the terminal device, where the first signaling is used to instruct, configure, or activate a first operation on a first cell, where the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization; wherein the first operation is used to obtain the TA of the first cell.
  • the TA acquisition device provided in the embodiment of the present application is applied to a terminal device, and the device includes:
  • a receiving unit configured to receive a first signaling sent by a network device, where the first signaling is used to instruct, configure, or activate a first operation on a first cell, where the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization;
  • the determining unit is configured to perform a first operation on the first cell, and obtain a TA of the first cell based on the first operation.
  • the TA acquisition device provided in the embodiment of the present application is applied to a network device, and the device includes:
  • a sending unit is configured to send a first signaling to a terminal device, wherein the first signaling is used to indicate, configure or activate a first operation on a first cell, wherein the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization; wherein the first operation is used to obtain a TA of the first cell.
  • the terminal device provided in an embodiment of the present application includes: a processor and a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute any one of the above-mentioned TA acquisition methods.
  • the network device provided in the embodiment of the present application includes: a processor and a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute any one of the above-mentioned TA acquisition methods.
  • the chip provided in the embodiment of the present application includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes any one of the above methods.
  • the computer-readable storage medium provided in the embodiments of the present application is used to store a computer program, and the computer program enables a computer to execute any one of the above methods.
  • the network device indicates or configures or activates the first signaling
  • the first operation is performed on the first cell
  • the terminal device performs the first operation on the first cell and obtains the TA of the first cell based on the first operation.
  • the network device manages the terminal device's acquisition of the TA through the first signaling, which provides a guarantee for uplink synchronization before cell switching and reduces the data transmission interruption delay caused by cell switching.
  • FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • FIG2-1 is a flow chart of TA acquisition method 1
  • Figure 2-2 is a schematic diagram of the process of TA acquisition method 2;
  • FIG3 is a flow chart of a TA acquisition method according to an embodiment of the present application.
  • FIG4 is a second flow chart of the TA acquisition method provided in an embodiment of the present application.
  • FIG5 is a third flow chart of the TA acquisition method provided in an embodiment of the present application.
  • FIG6 is a schematic diagram of a communication system provided in an embodiment of the present application.
  • FIG7-1 is a schematic diagram 1 of calculating TA2 provided in an embodiment of the present application.
  • FIG7-2 is a second schematic diagram of calculating TA2 provided in an embodiment of the present application.
  • FIG7-3 is a third schematic diagram of calculating TA2 provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of the first structure of a TA acquisition device provided in an embodiment of the present application.
  • FIG9 is a second schematic diagram of the structure of the TA acquisition device provided in an embodiment of the present application.
  • FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.
  • the communication system 100 may include a terminal device 110 and a network device 120.
  • the network device 120 may communicate with the terminal device 110 via an air interface.
  • the embodiments of the present application are only exemplified by the communication system 100, but the embodiments of the present application are not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.
  • 5G communication system also known as New Radio (NR) communication system
  • NR New Radio
  • the network device 120 may be an access network device that communicates with the terminal device 110.
  • the access network device may provide communication coverage for a specific geographical area, and may communicate with the terminal device 110 (eg, UE) located in the coverage area.
  • the network device 120 may be a base station (gNB) in an NR system, or a network device in a future evolved public land mobile network (PLMN), etc.
  • gNB base station
  • PLMN public land mobile network
  • the terminal device 110 may refer to an access terminal, a user equipment (UE), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device.
  • UE user equipment
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.
  • SIP Session Initiation Protocol
  • IoT IoT device
  • satellite handheld terminal a Wireless Local Loop (WLL) station
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • FIG. 1 is only an example of a system to which the present application is applicable.
  • System and “network” are often used interchangeably in this article.
  • the term “and/or” in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this article generally indicates that the objects associated before and after are in an "or” relationship.
  • the "indication” mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship.
  • A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.
  • the "correspondence" mentioned in the embodiments of the present application can mean that there is a direct or indirect correspondence relationship between the two, or it can mean that there is an association relationship between the two, or it can mean that the relationship between indication and being indicated, configuration and being configured, etc.
  • predefined or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method.
  • predefined may refer to the definition in the protocol.
  • protocol may refer to a standard protocol in the field of communications, such as the NR protocol and related protocols used in future communication systems, which is not limited in the present application.
  • the implementation of uplink synchronization depends on the acquisition of TA.
  • the acquisition of TA can include two methods, one is the random access channel (Random Access Channel). There are two methods: one is to obtain the TA of the target cell based on the transmission of the physical random access channel (PRACH), and the other is to obtain the TA of the target cell based on the transmission of the RACH less method. The following describes these two methods:
  • the terminal device sends PRACH to the target cell, so that the target cell measures the TA and sends the measured TA to the terminal device.
  • the terminal device calculates the TA through the time difference between two cells or the time difference of signal transmission arrival from two cells.
  • the terminal device sends PRACH to the target cell.
  • the target cell receives PRACH and measures TA
  • the TA can be directly informed to the terminal device, or the serving cell informs the terminal device of the TA, so that the terminal device can obtain the TA of the target cell.
  • the serving cell instructs the UE to send PRACH to the candidate cell.
  • the UE sends PRACH to the candidate cell according to the instruction of the serving cell.
  • the candidate cell informs the UE of the obtained TA.
  • the candidate cell informs the serving cell of the obtained TA.
  • the serving cell informs the UE of the TA of the candidate cell.
  • the serving cell sends a handover command to the UE, informing the UE to handover to the target cell (ie, the candidate cell).
  • the serving cell can know that the UE has acquired the TA of the target cell, so that a switching command can be sent to allow the UE to switch to the target cell.
  • the TA is acquired by the terminal device, so the serving cell does not know whether the terminal device has acquired the TA of the target cell. Therefore, the serving cell does not know whether it can send a handover command to the terminal device.
  • the serving cell sends a downlink signal
  • the candidate cell #1 sends a downlink signal
  • the candidate cell #2 sends a downlink signal.
  • the downlink signal can be a synchronization signal block (Synchronization Signal/PBCH Block, SSB) or other downlink signals.
  • SSB Synchronization Signal/PBCH Block
  • the UE calculates the TA of candidate cell #1 based on the time difference between the downlink signal reception between the serving cell and candidate cell #1 and the TA of the serving cell; the UE calculates the TA of candidate cell #2 based on the time difference between the downlink signal reception between the serving cell and candidate cell #2 and the TA of the serving cell.
  • the serving cell sends a handover command to the UE, informing the UE to handover to the target cell.
  • the UE can obtain the arrival time of the downlink signals from each cell, and then obtain the time difference of the downlink signal reception of each candidate cell compared to the serving cell.
  • the UE can calculate the TA from the UE to each candidate cell through this time difference.
  • the serving cell has no way of knowing when the UE completes obtaining the TA, resulting in the service cell being unable to clearly know when to send a switching command to the UE.
  • the TA of the candidate cell cannot be accurately obtained based solely on the time difference of the downlink signal reception of multiple cells.
  • the “network device” described in the embodiments of the present application may be a base station or a transmission node corresponding to a service cell.
  • first cell described in the embodiments of the present application may be a “candidate cell” or a “target cell”.
  • the "second cell” described in the embodiments of the present application may be a “reference cell” or a “serving cell” or a “target cell” or a “candidate cell”.
  • the "third cell” described in the embodiments of the present application may be a “target cell” or a “switching target cell”.
  • the first cell refers to a cell to be measured, and the number of cells to be measured may be one or more.
  • the third cell refers to a target cell for cell switching or a switching target cell, which is a designated cell and may be one of the cells to be measured.
  • the “indication” and “configuration” described in the embodiments of the present application can be interchangeable.
  • the “first signaling is used to indicate that a first operation is performed on a first cell” described in the embodiments of the present application can also be “the first signaling is used to configure the first operation to be performed on the first cell”.
  • FIG3 is a flow chart of a TA acquisition method provided in an embodiment of the present application. As shown in FIG3 , the TA acquisition method includes the following steps:
  • Step 301 A terminal device receives a first signaling sent by a network device, where the first signaling is used to instruct, configure, or activate a first operation on a first cell, where the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization.
  • a terminal device receives a first signaling sent by a network device.
  • the first signaling is a media access control (MAC) control element (CE).
  • the first signaling is a radio resource control (RRC) signaling.
  • MAC media access control
  • RRC radio resource control
  • the first signaling is used to instruct, configure or activate a first operation on the first cell, and the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization.
  • uplink synchronization can be acquisition of uplink timing or acquisition of TA.
  • measurement specifically refers to: the terminal device measures or receives the downlink signal of the cell.
  • the downlink signal may be SSB or other types of downlink signals.
  • downlink synchronization/uplink synchronization is achieved based on measurement.
  • Downlink synchronization/uplink synchronization can be achieved by measuring the downlink signal of the cell. Signals (such as SSB) can achieve downlink synchronization. By measuring the downlink signal (such as SSB) of the cell, uplink timing acquisition or TA acquisition can be achieved, thereby achieving uplink synchronization.
  • the number of the first cells may be one or more.
  • the number of the first cells is 3, and the first signaling is used to instruct or configure or activate the first operation on cell 1, cell 2, and cell 3.
  • the base station configures one or more first cells, such as one or more candidate cells.
  • the base station instructs or configures or activates the terminal device to perform a first operation on the first cell through a first signaling, wherein the first signaling includes one or more IDs of the first cell (such as candidate cells) or a configuration ID of the first cell (such as a candidate cell configuration), and the cell indicated by the ID is the cell that needs to be measured and/or downlink synchronized and/or uplink synchronized.
  • the first signaling includes uplink scheduling information or uplink grant (UL grant) information.
  • the uplink resource transmission indicated by the uplink scheduling information or the uplink grant information can be used for the terminal device to send information to the network device, such as the first information described below.
  • Step 302 The terminal device performs a first operation on the first cell, and obtains the TA of the first cell based on the first operation.
  • the terminal device performs a first operation on the first cell, and obtains the TA of the first cell based on the first operation, which can be achieved through any of the following schemes.
  • the terminal device determines a first time difference between the first cell and the second cell based on the first operation. Further, the terminal device determines a TA of the first cell based on a TA of the second cell and the first time difference.
  • the first time difference between the first cell and the second cell may be a downlink timing time difference between the first cell and the second cell, or may be a downlink reception timing time difference (RX timing difference) between the first cell and the second cell.
  • RX timing difference downlink reception timing time difference
  • the TA of the second cell is TA1
  • the first time difference is offset
  • the TA of the first cell is TA2
  • TA2 TA1+2*offset
  • the first signaling includes a second time offset corresponding to the first cell.
  • the terminal device determines the TA of the first cell based on the TA of the second cell, the first time difference and the second time offset.
  • the second time offset corresponding to the first cell includes at least one of the following:
  • the uplink TA adjusts the corresponding time offset
  • the downlink timing error refers to the downlink timing error between the first cell and the second cell.
  • the second time offset may include the adjustment value of the uplink TA (i.e., the time offset corresponding to the uplink TA adjustment) and/or the time offset caused by the downlink timing error (i.e., the time offset corresponding to the downlink timing error) and/or the time offset caused by the uplink-downlink conversion (i.e., the time offset corresponding to the uplink-downlink conversion).
  • the second time offset may be used by the terminal device to correct or calculate the TA when performing TA calculation.
  • the TA of the second cell is TA1
  • the first time difference is offset
  • the second time offset includes the time offset (Delta) corresponding to the downlink timing error
  • the TA of the first cell is TA2
  • TA2 TA1+2*(offset+Delta).
  • the TA of the second cell is TA1
  • the first time difference is offset
  • the second time offset includes the time offset (X) corresponding to the uplink and downlink conversion
  • the TA of the first cell is TA2
  • TA2 TA1+2*offset-X.
  • the TA of the second cell is TA1
  • the first time difference is offset
  • the second time offset includes the time offset (Delta) corresponding to the downlink timing error and the time offset (X) corresponding to the uplink and downlink conversion
  • the TA of the first cell is TA2
  • TA2 TA1+2*(offset+Delta)-X.
  • the identification/confirmation/determination that "the terminal device can obtain the TA of the first cell” can be implemented by the following scheme:
  • the terminal device After receiving the first signaling, the terminal device can obtain the TA of the first cell.
  • the first signaling may be an RRC signaling.
  • the network device and/or the terminal device determines/confirms/determines/assumes that after the terminal device receives the first signaling, the terminal device can acquire the TA of the first cell.
  • the terminal device After a first time has passed after receiving the first signaling, the terminal device can obtain the TA of the first cell.
  • the first signaling may be an RRC signaling.
  • the network device and/or the terminal device determines/confirms/determines/assumes that the terminal device can acquire the TA of the first cell after a first time has passed after the terminal device receives the first signaling.
  • the terminal device can obtain the TA of the first cell.
  • the first signaling may be MAC CE
  • the confirmation message corresponding to the first signaling may be HARQ-ACK information.
  • the network device and/or the terminal device determines/confirms/determines/assumes that the terminal device is able to obtain the TA of the first cell after a second time has passed after the terminal device sends the confirmation message corresponding to the first signaling.
  • the terminal device after the terminal device acquires the TA of the first cell, the terminal device sends the first information or the second signaling to the network device.
  • the first information or the second signaling is used to indicate that the terminal device acquires the TA of the first cell.
  • the first information or the second signaling may instruct the terminal device to acquire the TA of part or all of the first cell.
  • the network device instructs or configures or activates, through the first signaling, a first operation on cell 1, cell 2, and cell 3.
  • the terminal device performs the first operation on cell 1, cell 2, and cell 3, obtains the TA of cell 1 and cell 2, and indicates to the network device through the first information or the second signaling that the terminal device obtains the TA of cell 1 and cell 2.
  • the network device instructs or configures or activates, through the first signaling, a first operation on cell 1, cell 2, and cell 3.
  • the terminal device performs the first operation on cell 1, cell 2, and cell 3, obtains the TA of cell 1, cell 2, and cell 3, and indicates to the network device through the first information or the second signaling that the terminal device obtains the TA of cell 1, cell 2, and cell 3.
  • the first information includes at least one of the following: a first time difference between the first cell and the second cell, a TA of the first cell, an identifier of the first cell, and first indication information, wherein the first indication information is used to indicate that the terminal device obtains the TA of the first cell.
  • the first cell may be one or more candidate cells or target cells.
  • the first signaling may include information such as the ID of the cell whose TA the terminal device has acquired as of the uplink transmission scheduled by the first signaling.
  • the first signaling may only include the ID of the cell to indicate the cell for which TA acquisition has been completed.
  • the first signaling may also include the ID of the cell and information such as the corresponding TA and/or downlink timing time difference and/or downlink reception timing time difference.
  • the first signaling may also include indication information to indicate that the terminal has acquired the TA of all cells indicated by the first signaling.
  • the first signaling may also include indication information to indicate that the terminal has acquired the TA of one or more cells indicated by the first signaling.
  • the first information is transmitted through a first uplink resource; the first uplink resource is indicated by uplink scheduling information included in the first signaling; or, the first uplink resource is obtained through a scheduling request (Scheduling Request, SR) of a terminal device.
  • SR scheduling request
  • the uplink scheduling information can also be replaced by uplink authorization (UL grant) information.
  • UL grant uplink authorization
  • the terminal device after executing the first operation, transmits the first information using the first uplink resource scheduled by the first signaling; or, after executing the first operation, the terminal device makes a scheduling request for uplink transmission and transmits the first information using the obtained first uplink resource.
  • Implementation scheme 2 In some implementation methods, the second signaling is a specific SR, and the specific SR is used to instruct the terminal device to obtain the TA of the first cell.
  • the SR may be configured based on RRC signaling.
  • the first information is reporting information of the first cell
  • the reporting information of the first cell is used to indicate that the terminal device obtains the TA of the first cell.
  • the reporting information is reported in a periodic reporting, semi-continuous reporting or aperiodic reporting.
  • the reporting information is transmitted via a second uplink resource; the second uplink resource is indicated by uplink authorization (UL grant) information included in the first signaling.
  • UL grant uplink authorization
  • the reporting information may be channel state information (CSI) reporting information.
  • the CSI reporting information may include at least one of the following: reference signal receiving power (RSRP), channel quality indication (CQI), CSI-RS resource indication (CRI), SSB index (SSB index), signal to interference plus noise ratio (SINR), and other information.
  • RSRP reference signal receiving power
  • CQI channel quality indication
  • CRI CSI-RS resource indication
  • SSB index SSB index
  • SINR signal to interference plus noise ratio
  • it may include at least one of the following: cri-RI-PMI-CQI, cri-RI-i1, cri-RI-i1-CQI, cri-RI-CQI, cri-RSRP, cri-SINR, ssb-Index-RSRP, ssb-Index-SINR, cri-RI-LI-PMI-CQI, cri-RSRP-Index, ssb-Index-RSRP-Index, cri-SINR-Index, ssb-Index-SINR-Index.
  • the method further includes: the terminal device receives a switching command sent by the network device, the switching command being used to instruct the terminal device to switch to a third cell; wherein the switching command includes at least one of the following: an identifier of the third cell, a TA of the third cell.
  • the third cell may be a cell other than the first cell.
  • the third cell may be a cell within the range of the first cell, that is, the third cell may be a cell in the first cell (the first cell may be a plurality of cells).
  • the third cell refers to a target cell of a cell handover or a handover target cell, which is a designated cell.
  • the third cell may be one of the cells performing the first operation.
  • the handover command may be a handover instruction of a third cell or a cell switch instruction.
  • the terminal device uses the TA of the third cell included in the handover command to perform uplink transmission on the third cell; and/or, if the handover command does not include the TA of the third cell, the terminal device uses the calculated TA of the third cell to perform uplink transmission on the third cell.
  • the calculated TA of the third cell may also be a TA obtained based on measurement by the terminal device.
  • FIG. 4 is a second flow chart of a TA acquisition method provided in an embodiment of the present application. As shown in FIG. 4 , the TA acquisition method includes the following steps:
  • Step 401 The network device sends a first signaling to the terminal device, where the first signaling is used to instruct, configure, or activate a first operation on a first cell, where the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization; wherein the first operation is used to obtain a TA of the first cell.
  • the network device sends a first signaling to the terminal device.
  • the first signaling is MAC CE.
  • the first signaling is RRC signaling.
  • the first signaling is used to instruct, configure or activate a first operation on the first cell, and the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization.
  • uplink synchronization can be acquisition of uplink timing or acquisition of TA.
  • measurement specifically refers to: the terminal device measures or receives the downlink signal of the cell.
  • the downlink signal may be SSB or other types of downlink signals.
  • downlink synchronization/uplink synchronization is achieved based on measurement, and downlink synchronization/uplink synchronization can be achieved by measuring the downlink signal of the cell.
  • downlink synchronization can be achieved by measuring the downlink signal of the cell (such as SSB)
  • uplink timing acquisition or TA acquisition can be achieved by measuring the downlink signal of the cell (such as SSB), thereby achieving uplink synchronization.
  • the number of the first cells may be one or more.
  • the number of the first cells is 3, and the first signaling is used to instruct or configure or activate the first operation on cell 1, cell 2, and cell 3.
  • the first signaling includes a second time offset corresponding to the first cell.
  • the second time offset is used by the terminal device to obtain the TA of the first cell.
  • the specific acquisition method can refer to the aforementioned Figure 3 Related scheme.
  • the second time offset corresponding to the first cell includes at least one of the following:
  • the uplink TA adjusts the corresponding time offset
  • the second time offset may include the adjustment value of the uplink TA (i.e., the time offset corresponding to the uplink TA adjustment) and/or the time offset caused by the downlink timing error (i.e., the time offset corresponding to the downlink timing error) and/or the time offset caused by the uplink-downlink conversion (i.e., the time offset corresponding to the uplink-downlink conversion).
  • the downlink timing error refers to the downlink timing error between the first cell and the second cell.
  • the identification/confirmation/determination that "the terminal device can obtain the TA of the first cell” can be implemented by the following scheme:
  • the terminal device After sending the first signaling, the terminal device can obtain the TA of the first cell.
  • the first signaling may be an RRC signaling.
  • the network device determines/confirms/determines/assumes that after the network device sends the first signaling, the terminal device can obtain the TA of the first cell.
  • Method 2 After a first time has passed since the first signaling was sent, the terminal device can obtain the TA of the first cell.
  • the first signaling may be an RRC signaling.
  • the network device determines/confirms/determines/assumes that the terminal device can acquire the TA of the first cell after a first time has passed after the network device sends the first signaling.
  • the terminal device After a second time has passed since receiving the confirmation message corresponding to the first signaling, the terminal device can obtain the TA of the first cell.
  • the first signaling may be a MAC CE
  • the confirmation message corresponding to the first signaling may be HARQ-ACK information.
  • the network device determines/confirms/determines/believes that the terminal device can obtain the first small signaling after the second time has passed after the network device receives the confirmation message corresponding to the first signaling. District TA.
  • the terminal device does not need to provide feedback to the network device, and the network device believes that the terminal device can calculate or obtain the TA of the first cell through the first operation.
  • the network device believes that the error of the terminal device for the TA of the first cell can be adjusted in subsequent uplink transmissions, or the error does not affect the uplink transmission quality.
  • the network device After the network device confirms that the terminal device can obtain the TA of the first cell, it can send a switching instruction to the terminal device.
  • the network device receives the first information or the second signaling sent by the terminal device.
  • the first information or the second signaling is used to instruct the terminal device to acquire the TA of the first cell.
  • the first information or the second signaling may instruct the terminal device to acquire the TA of part or all of the first cell.
  • the network device instructs or configures or activates, through the first signaling, a first operation on cell 1, cell 2, and cell 3.
  • the terminal device performs the first operation on cell 1, cell 2, and cell 4, obtains the TA of cell 1 and cell 2, and indicates to the network device through the first information or the second signaling that the terminal device obtains the TA of cell 1 and cell 2.
  • the network device instructs or configures or activates, through the first signaling, a first operation on cell 1, cell 2, and cell 3.
  • the terminal device performs the first operation on cell 1, cell 2, and cell 4, obtains the TA of cell 1, cell 2, and cell 3, and indicates to the network device through the first information or the second signaling that the terminal device obtains the TA of cell 1, cell 2, and cell 3.
  • the first information includes at least one of the following: a first time difference between the first cell and the second cell, a TA of the first cell, an identifier of the first cell, and first indication information, wherein the first indication information is used to indicate that the terminal device obtains the TA of the first cell.
  • the first cell may be one or more candidate cells or target cells.
  • the first information is transmitted via a first uplink resource; the first uplink resource is indicated via uplink scheduling information included in the first signaling; or the first uplink resource The source is obtained through the SR of the terminal device.
  • the uplink scheduling information can also be replaced by uplink authorization (UL grant) information.
  • UL grant uplink authorization
  • Implementation scheme 2 In some implementation methods, the second signaling is a specific SR, and the specific SR is used to instruct the terminal device to obtain the TA of the first cell.
  • the first information is reporting information of the first cell
  • the reporting information of the first cell is used to indicate that the terminal device obtains the TA of the first cell.
  • the reporting information is reported in a periodic reporting, semi-continuous reporting or aperiodic reporting.
  • the reporting information is transmitted via a second uplink resource; the second uplink resource is indicated by uplink authorization (UL grant) information included in the first signaling.
  • UL grant uplink authorization
  • the reporting information may be CSI reporting information.
  • the CSI reporting information may include at least one of the following: RSRP, CQI, CRI, SSB index, SINR and other information. More specifically, it may include at least one of the following: cri-RI-PMI-CQI, cri-RI-i1, cri-RI-i1-CQI, cri-RI-CQI, cri-RSRP, cri-SINR, ssb-Index-RSRP, ssb-Index-SINR, cri-RI-LI-PMI-CQI, cri-RSRP-Index, ssb-Index-RSRP-Index, cri-SINR-Index, ssb-Index-SINR-Index.
  • the method further includes: the network device sends a switching command to the terminal device, and the switching command is used to instruct the terminal device to switch to the third cell; wherein the switching command includes at least one of the following: an identifier of the third cell, and a TA of the third cell.
  • the third cell refers to a target cell of a cell handover or a handover target cell, which is a designated cell.
  • the third cell may be one of the cells performing the first operation.
  • the switching command can be a switching indication of a third cell or an indication of a cell switch.
  • FIG5 is a flow chart of the TA acquisition method provided in an embodiment of the present application.
  • the base station refers to the base station corresponding to the serving cell
  • the terminal device is the UE
  • the first cell includes the candidate cell #1 and the candidate cell #2 (that is, the number of the first cells is 2)
  • the second cell is the serving cell
  • the third cell is the candidate cell.
  • Area #1 as shown in FIG5 , the TA acquisition method includes the following steps:
  • Step 501 A base station sends a first signaling to a UE, where the first signaling is used to instruct, configure or activate measurement and/or downlink synchronization and/or uplink synchronization of candidate cell #1 and candidate cell #2.
  • Step 502 Candidate cell #1 sends a downlink signal, and candidate cell #2 sends a downlink signal.
  • the downlink signal may be SSB or other types of signals.
  • Step 503 The UE measures the downlink signal of candidate cell #1 and the downlink signal of candidate cell #2.
  • Step 504 The UE calculates the TA of candidate cell #1 based on the reception time difference of the downlink signal between candidate cell #1 and the serving cell (i.e., the downlink reception timing time difference), the TA of the serving cell, and the second time offset (optional).
  • the UE calculates the TA of candidate cell #2 based on the reception time difference of the downlink signal between candidate cell #2 and the serving cell (i.e., the downlink reception timing time difference), the TA of the serving cell, and the second time offset (optional).
  • Step 505 The UE sends the first information or the second signaling to the base station, where the first information or the second signaling is used to instruct the terminal device to obtain the TAs of the candidate cell #1 and the candidate cell #2.
  • the specific implementation of the first information or the second signaling can refer to the schemes related to the aforementioned Figures 3 and 4.
  • the handover command may be a handover command to the candidate cell #1 (ie, the target cell) or a cell handover command.
  • the handover command may include the ID and TA of the candidate cell #1.
  • the UE uses the TA included in the handover command to perform uplink transmission to the candidate cell #1.
  • the handover command may only include the ID of the candidate cell #1.
  • the UE uses the calculated TA of the candidate cell #1 (or the measured TA of the candidate cell #1) to perform uplink transmission to the candidate cell #1.
  • the UE uses a specific application example to illustrate how to calculate the TA of a cell.
  • the UE calculates the TA of a cell based on the downlink reception timing time difference.
  • the UE may also calculate the TA of a cell based on the downlink timing time difference.
  • cell 1 and cell 2 may be transmission node 1 (or base station 1) and transmission node 2 (or base station 2), cell 1 sends a downlink signal (such as SSB#1) to the UE, and cell 2 sends a downlink signal (such as SSB#2) to the UE.
  • FIG. 7-1 shows a schematic diagram of calculating TA2, as follows:
  • TA is twice the propagation delay, so the TA of cell 1 and cell 2 satisfies the following formula:
  • TA1 is the TA of cell 1
  • TA2 is the TA of cell 2.
  • Offset is the downlink reception timing time difference, that is, the time difference between the UE receiving the downlink signal of downlink node 1 and node 2. Offset satisfies the following formula:
  • the UE can calculate the TA2 of cell 2 based on TA1 and offset.
  • TA2 satisfies the following formula:
  • TA is twice the propagation delay, so the TA of cell 1 and cell 2 satisfies the following formula:
  • the downlink receiving timing time difference Offset satisfies the following formula:
  • Delta can be obtained through interaction between cells or through information reported by other terminals.
  • the UE can calculate the TA2 of cell 2 based on TA1 and offset.
  • TA2 satisfies the following formula:
  • TA2 TA1+2*(offset+Delta)
  • FIG. 7-3 shows a schematic diagram of calculating TA2, as follows:
  • TA is twice the propagation delay, so the TA of cell 1 and cell 2 satisfies the following formula:
  • TA1 is the TA of cell 1
  • TA2 is the TA of cell 2.
  • the downlink receiving timing time difference Offset satisfies the following formula:
  • Delta can be obtained through interaction between cells or through information reported by other terminals.
  • transition time (gap) X between downlink transmission and uplink transmission of cell 2.
  • the UE can calculate TA2 of cell 2 according to TA1, offset and X.
  • TA2 satisfies the following formula:
  • TA2 TA1+2*(offset+Delta)-X
  • the uplink-downlink switching time is an implementation parameter of the base station, and can be further indicated by the base station to inform the UE.
  • the technical solution of the embodiment of the present application 1) estimates the uplink TA based on the downlink measurement of the UE, which can avoid the delay caused by the scheduling and TA indication introduced by the RACH of the PDCCH order.
  • the UE can calculate the TA of the target cell based on its own measurement and the existing TA information of the current serving cell, which can reduce the delay and improve the flexibility of the UE.
  • the feature of multiplexing the indication to indicate downlink measurement or synchronization can better serve the reception time difference based on multiple candidate cells in this solution, and reduce the amount of indication and UE calculation.
  • FIG8 is a schematic diagram of the structure of a TA acquisition device provided in an embodiment of the present application, which is applied to a terminal device.
  • the TA acquisition device includes:
  • the receiving unit 801 is configured to receive a first signaling sent by a network device, where the first signaling is used to instruct, configure, or activate a first operation on a first cell, where the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization;
  • the determining unit 802 is configured to perform a first operation on the first cell, and obtain a TA of the first cell based on the first operation.
  • the determining unit 802 is configured to determine a first time difference between the first cell and the second cell based on the first operation, and to determine a TA of the first cell based on a TA of the second cell and the first time difference.
  • the first signaling includes a second time offset corresponding to the first cell.
  • the determining unit 802 is configured to determine the TA of the first cell based on the TA of the second cell, the first time difference, and the second time offset.
  • the second time offset includes at least one of the following:
  • the uplink TA adjusts the corresponding time offset
  • the terminal device after receiving the first signaling, can obtain the TA of the first cell; and/or, after a first time has passed after receiving the first signaling, the terminal device can obtain the TA of the first cell; and/or, after a second time has passed after sending a confirmation message corresponding to the first signaling, the terminal device can obtain the TA of the first cell.
  • the apparatus further includes: a sending unit 803 configured to send the first information or the second signaling to the network device.
  • the first information or the second signaling is used to instruct the terminal device to acquire the TA of the first cell.
  • the first information includes at least one of the following: a first time difference between the first cell and the second cell, a TA of the first cell, an identifier of the first cell, and first indication information, wherein the first indication information is used to indicate that the terminal device obtains the TA of the first cell.
  • the first information is transmitted via a first uplink resource
  • the first uplink resource is indicated by uplink scheduling information included in the first signaling; or,
  • the first uplink resource is obtained through the SR of the terminal device.
  • the second signaling is a specific SR
  • the specific SR is used to instruct the terminal device to obtain the TA of the first cell.
  • the first information is reporting information of the first cell
  • the reporting information of the first cell is used to indicate that the terminal device obtains the TA of the first cell.
  • the reporting information is reported periodically or semi-permanently. Continuous reporting or non-periodic reporting.
  • the reporting information is transmitted via a second uplink resource
  • the second uplink resource is indicated by uplink grant information included in the first signaling.
  • the receiving unit 801 is configured to receive a switching command sent by the network device, and the switching command is used to instruct the terminal device to switch to a third cell; wherein the switching command includes at least one of the following: an identifier of the third cell and a TA of the third cell.
  • the sending unit 803 uses the TA of the third cell included in the switching command to perform uplink transmission to the third cell; and/or, if the switching command does not include the TA of the third cell, the sending unit 803 uses the calculated TA of the third cell to perform uplink transmission to the third cell.
  • the first signaling is MAC CE or RRC signaling.
  • each unit in the TA acquisition device shown in FIG8 can be understood by referring to the relevant description of the above method.
  • the functions of each unit in the TA acquisition device shown in FIG8 can be implemented by a program running on a processor, or by a specific logic circuit.
  • FIG. 9 is a second schematic diagram of the structure of a TA acquisition device provided in an embodiment of the present application, which is applied to a network device.
  • the TA acquisition device includes:
  • the sending unit 901 is configured to send a first signaling to the terminal device, wherein the first signaling is used to indicate, configure or activate a first operation on a first cell, wherein the first operation includes at least one of the following: measurement, downlink synchronization, and uplink synchronization; wherein the first operation is used to obtain the TA of the first cell.
  • the first signaling includes a second time offset corresponding to the first cell.
  • the second time offset includes at least one of the following:
  • the uplink TA adjusts the corresponding time offset
  • the terminal device after sending the first signaling, can acquire the TA of the first cell; and/or,
  • the terminal device After a first time has passed since the first signaling was sent, the terminal device is able to acquire the TA of the first cell; and/or,
  • the terminal device After a second time has passed since receiving the confirmation message corresponding to the first signaling, the terminal device can obtain the TA of the first cell.
  • the apparatus further includes: a receiving unit 902 configured to receive the first information or the second signaling sent by the terminal device.
  • the first information or the second signaling is used to instruct the terminal device to acquire the TA of the first cell.
  • the first information includes at least one of the following: a first time difference between the first cell and the second cell, a TA of the first cell, an identifier of the first cell, and first indication information, wherein the first indication information is used to indicate that the terminal device obtains the TA of the first cell.
  • the first information is transmitted via a first uplink resource
  • the first uplink resource is indicated by uplink scheduling information included in the first signaling; or,
  • the first uplink resource is obtained through the SR of the terminal device.
  • the second signaling is a specific SR
  • the specific SR is used to instruct the terminal device to obtain the TA of the first cell.
  • the first information is reporting information of the first cell
  • the reporting information of the first cell is used to indicate that the terminal device obtains the TA of the first cell.
  • the reporting information is reported periodically or semi-permanently. Continuous reporting or non-periodic reporting.
  • the reporting information is transmitted via a second uplink resource
  • the second uplink resource is indicated by uplink grant information included in the first signaling.
  • the sending unit 901 is configured to send a switching command to the terminal device, wherein the switching command is used to instruct the terminal device to switch to a third cell; wherein the switching command includes at least one of the following: an identifier of the third cell, and a TA of the third cell.
  • the first signaling is MAC CE or RRC signaling.
  • each unit in the TA acquisition device shown in FIG9 can be understood by referring to the relevant description of the above method.
  • the functions of each unit in the TA acquisition device shown in FIG9 can be implemented by a program running on a processor, or by a specific logic circuit.
  • Figure 10 is a schematic structural diagram of a communication device 1000 provided in an embodiment of the present application.
  • the communication device may be a terminal device or a network device, and the communication device 1000 shown in Figure 10 includes a processor 1010, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.
  • the communication device 1000 may further include a memory 1020.
  • the processor 1010 may call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.
  • the memory 1020 may be a separate device independent of the processor 1010 , or may be integrated into the processor 1010 .
  • the communication device 1000 may further include a transceiver 1030 , and the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.
  • the transceiver 1030 may include a transmitter and a receiver.
  • the transceiver 1030 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1000 may specifically be a network device in an embodiment of the present application, and the The communication device 1000 can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.
  • the communication device 1000 may specifically be a mobile terminal/terminal device of an embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.
  • Fig. 11 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 1100 shown in Fig. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method according to the embodiment of the present application.
  • the chip 1100 may further include a memory 1120.
  • the processor 1110 may call and run a computer program from the memory 1120 to implement the method in the embodiment of the present application.
  • the memory 1120 may be a separate device independent of the processor 1110 , or may be integrated into the processor 1110 .
  • the chip 1100 may further include an input interface 1130.
  • the processor 1110 may control the input interface 1130 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.
  • the chip 1100 may further include an output interface 1140.
  • the processor 1110 may control the output interface 1140 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.
  • the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.
  • chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, System on chip or system on chip, etc.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiment can be completed by the hardware integrated logic circuit in the processor or the instruction in the form of software.
  • the above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general processor can be a microprocessor or the processor can also be any conventional processor, etc.
  • the steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to execute, or the hardware and software modules in the decoding processor can be executed.
  • the software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.
  • An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.
  • the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.
  • the computer program product may be applied to the mobile terminal/terminal in the embodiments of the present application.
  • Device and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which will not be repeated here for the sake of brevity.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiments of the present application.
  • the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.
  • the computer program can be applied to the mobile terminal/terminal device in the embodiments of the present application.
  • the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separate.
  • the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art.
  • the computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

Landscapes

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

Abstract

本申请公开了一种TA获取方法及装置、终端设备、网络设备，所述方法包括：终端设备接收网络设备发送的第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；所述终端设备对所述第一小区执行第一操作，基于所述第一操作获取所述第一小区的TA。

Description

一种TA获取方法及装置、终端设备、网络设备
相关申请的交叉引用
本申请基于申请号为202310773398.1、申请日为2023年06月27日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及无线通信技术领域，尤其涉及一种TA获取方法及装置、终端设备、网络设备。
背景技术
小区切换会导致数据传输中断时延(interruption time)。为了降低数据传输中断时延，终端设备在进行小区切换之前，需要对待切换的目标小区进行下行同步和上行同步。其中，上行同步的实现依赖于定时提前量(Timing Advance，TA)的获取，如何管理终端设备获取TA需要明确。
发明内容
本申请实施例提供了一种TA获取方法及装置、终端设备、网络设备、芯片及计算机可读存储介质。
本申请实施例提供的TA获取方法，包括：
终端设备接收网络设备发送的第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；
所述终端设备对所述第一小区执行第一操作，基于所述第一操作获取所述第一小区的TA。
本申请实施例提供的TA获取方法，包括：
网络设备向终端设备发送第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；其中，所述第一操作用于获取所述第一小区的TA。
本申请实施例提供的TA获取装置，应用于终端设备，所述装置包括：
接收单元，配置为接收网络设备发送的第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；
确定单元，配置为对所述第一小区执行第一操作，基于所述第一操作获取所述第一小区的TA。
本申请实施例提供的TA获取装置，应用于网络设备，所述装置包括：
发送单元，配置为向终端设备发送第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；其中，所述第一操作用于获取所述第一小区的TA。
本申请实施例提供的终端设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行上述任意一种TA获取方法。
本申请实施例提供的网络设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行上述任意一种TA获取方法。
本申请实施例提供的芯片，包括：处理器，用于从存储器中调用并运行计算机程序，使得安装有所述芯片的设备执行上述任意一种方法。
本申请实施例提供的计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行上述任意一种方法。
本申请实施例的技术方案中，网络设备通过第一信令指示或配置或激 活对第一小区进行第一操作，终端设备对第一小区执行第一操作并基于第一操作获取第一小区的TA，如此，实现了网络设备通过第一信令对终端设备获取TA进行了管理，为小区切换之前进行上行同步提供了保障，降低了小区切换导致的数据传输中断时延。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是本申请实施例的一个应用场景的示意图；
图2-1是TA获取方式1的流程示意图；
图2-2是TA获取方式2的流程示意图；
图3是本申请实施例提供的TA获取方法的流程示意图一；
图4是本申请实施例提供的TA获取方法的流程示意图二；
图5是本申请实施例提供的TA获取方法的流程示意图三；
图6是本申请实施例提供的通信系统的示意图；
图7-1是本申请实施例提供的计算TA2的示意图一；
图7-2是本申请实施例提供的计算TA2的示意图二；
图7-3是本申请实施例提供的计算TA2的示意图三；
图8是本申请实施例提供的TA获取装置的结构组成示意图一；
图9是本申请实施例提供的TA获取装置的结构组成示意图二；
图10是本申请实施例提供的一种通信设备示意性结构图；
图11是本申请实施例的芯片的示意性结构图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实 施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
图1是本申请实施例的一个应用场景的示意图。
如图1所示，通信系统100可以包括终端设备110和网络设备120。网络设备120可以通过空口与终端设备110通信。
应理解，本申请实施例仅以通信系统100进行示例性说明，但本申请实施例不限定于此。也就是说，本申请实施例的技术方案可以应用于各种通信系统，例如：5G通信系统(也称为新无线(New Radio，NR)通信系统)，或未来的通信系统等。
在图1所示的通信系统100中，网络设备120可以是与终端设备110通信的接入网设备。接入网设备可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备110(例如UE)进行通信。
网络设备120可以是NR系统中的基站(gNB)，或者是未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
终端设备110可以是任意终端设备，其包括但不限于与网络设备120或其它终端设备采用有线或者无线连接的终端设备。
例如，所述终端设备110可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、IoT设备、卫星手持终端、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进网络中的终端设备等。
需要说明的是，图1只是以示例的形式示意本申请所适用的系统，当然，本申请实施例所示的方法还可以适用于其它系统。此外，本文中术语 “系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。还应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。还应理解，在本申请的实施例中提到的“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。还应理解，在本申请的实施例中提到的“预定义”或“预定义规则”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。还应理解，本申请实施例中，所述"协议"可以指通信领域的标准协议，例如可以包括NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
为便于理解本申请实施例的技术方案，以下对本申请实施例的相关技术进行说明，以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。
在移动性增强项目中，引入了基于层1/层2测量的移动性增强，希望降低终端设备在进行小区切换时导致的数据传输中断时延(interruption time)。通过在进行小区切换前，对待切换的目标小区进行下行同步和上行同步，能够有效降低数据传输中断时延。其中，上行同步的实现依赖于TA的获取。对于TA的获取，相关项目同意了在进行小区切换之前，进行TA的获取。TA的获取可以包括两种方式，一种是随机接入信道(Random Access  Channel，RACH)方式，即基于物理随机接入信道(Physical Random Access Channel，PRACH)的传输获取目标小区的TA，另一种是无RACH(RACH less)方式，即不基于PRACH的传输获取目标小区的TA。以下对这两种方式进行说明：
TA获取方式1：终端设备发送PRACH给目标小区，从而让目标小区进行TA的测量，并将测量到的TA发送给终端设备。
TA获取方式2：终端设备通过两个小区的时间差或者来自两个小区的信号传输到达的时间差，进行TA的计算。
对于上述TA获取方式1，终端设备向目标小区发送PRACH，在目标小区接收到PRACH并测量出TA时，可以将TA直接告知给终端设备，或者由服务小区将TA告知给终端设备，从而，终端设备可以获得目标小区的TA。
如图2-1所示，具体流程包括以下步骤：
1)服务小区指示UE向候选小区(Candidate cell)发送PRACH。
2)UE按照服务小区的指示，向候选小区发送PRACH。
3-1)候选小区将获得的TA告知给UE。
3-2)候选小区将获得的TA告知服务小区。
4)服务小区将候选小区的TA告知给UE。
5)服务小区向UE发送切换命令，告知UE切换到目标小区(即候选小区)。
这里，UE在进行小区切换之前，服务小区是可以知道UE已经获取到了目标小区的TA，从而可以发送切换命令，并让UE切换到目标小区的。
对于上述TA获取方式2，TA的获取是通过终端设备来实现的，因此服务小区不知道终端设备是否获取到了目标小区的TA。所以，服务小区也不知道能否给终端设备发送切换命令。
如图2-2所示，具体流程包括以下步骤：
1)、2)、3)服务小区发送下行信号，候选小区#1发送下行信号，候选小区#2发送下行信号。下行信号可以是同步信号块(Synchronization Signal/PBCH Block，SSB)或者其他下行信号。
4)UE根据服务小区与候选小区#1的下行信号的接收时间差，以及服务小区的TA，计算候选小区#1的TA；UE根据服务小区与候选小区#2的下行信号的接收时间差，以及服务小区的TA，计算候选小区#2的TA。
在4)之后，服务小区不知道UE是否获得了目标小区(如候选小区#1或者候选小区#2)的TA。
5)服务小区向UE发送切换命令，告知UE切换到目标小区。
这里，UE通过测量多个小区的下行信号，可以获得各个小区到下行信号达到时间，进而可以获得各个候选小区相比于服务小区的下行信号接收的时间差。UE可以通过该时间差，计算UE到各个候选小区的TA。然而，UE在什么时候完成获得TA，这个对于服务小区是没有办法知道的，导致服务小区无法明确何时向UE发送切换命令。此外，在部分场景下，由于小区间存在下行定时误差、小区在实现上存在上下行之间的转换时间等因素，所以会导致仅仅基于多个小区下行信号接收的时间差，不能能够准确得到候选小区的TA。
为此，提出了本申请实施例的以下技术方案。
为便于理解本申请实施例的技术方案，以下通过具体实施例详述本申请的技术方案。以上相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
需要说明的是，本申请实施例中描述的“网络设备”可以是服务小区对应的基站或者传输节点。
需要说明的是，本申请实施例中描述的“第一小区”可以是“候选小区(Candidate cell)”或者是“目标小区”。
需要说明的是，本申请实施例中描述的“第二小区”可以是“参考小区”或者是“服务小区”或者是“目标小区”或者是“候选小区”。
需要说明的是，本申请实施例中描述的“第三小区”可以是“目标小区”或者是“切换目标小区”。
需要说明的是，第一小区是指需要测量的小区，需要测量的小区数目可以是一个或多个。第三小区是指小区切换的目标小区或者切换目标小区，为指定的某一个小区，可以是测量的小区中的一个。
需要说明的是，本申请实施例中描述的“指示”和“配置”可以相互替换。例如本申请实施例中描述的“第一信令用于指示对第一小区进行第一操作”也可以是“第一信令用于配置对第一小区进行第一操作”。
图3是本申请实施例提供的TA获取方法的流程示意图一，如图3所示，该TA获取方法包括以下步骤：
步骤301：终端设备接收网络设备发送的第一信令，第一信令用于指示或配置或激活对第一小区进行第一操作，第一操作包括以下至少之一：测量、下行同步、上行同步。
本申请实施例中，终端设备接收网络设备发送的第一信令。在一些实施方式中，第一信令为媒体接入控制(Media Access Control，MAC)控制元素(Control Element，CE)。在另一些实施方式中，第一信令为无线资源控制(Radio Resource Control，RRC)信令。
本申请实施例中，第一信令用于指示或配置或激活对第一小区进行第一操作，第一操作包括以下至少之一：测量、下行同步、上行同步。这里，上行同步可以是上行定时的获取或者TA的获取。
需要说明的是，测量具体是指：终端设备对小区的下行信号进行测量或接收。下行信号可以是SSB，或者是其他类型的下行信号。
需要说明的是，下行同步/上行同步是基于测量实现的，通过测量小区的下行信号可以实现下行同步/上行同步。具体来说，通过测量小区的下行 信号(如SSB)、可以实现下行同步，通过测量小区的下行信号(如SSB)可以实现上行定时的获取或者TA的获取，从而实现上行同步。
需要说明的是，第一小区的数目可以是一个或多个。作为示例：第一小区的数目为3个，第一信令用于指示或配置或激活对小区1、小区2以及小区3进行第一操作。
作为示例：基站配置一个或多个第一小区，例如一个或多个候选小区。基站通过第一信令指示或配置或激活终端设备对第一小区执行第一操作，其中，第一信令包含一个或者多个第一小区(如候选小区)的ID或者第一小区的配置(如候选小区配置)ID，该ID所指示的小区即为需要进行测量和/或下行同步和/或上行同步的小区。
在一些实施方式中，第一信令包含上行调度信息或者上行授权(UL grant)信息。上行调度信息或上行授权信息所指示的上行资源传输可以用于终端设备向网络设备发送信息，如下文中的第一信息。
步骤302：终端设备对第一小区执行第一操作，基于第一操作获取第一小区的TA。
本申请实施例中，终端设备对第一小区执行第一操作，基于第一操作获取第一小区的TA，可以通过以下任意一种方案来实现。
方案一
在一些实施方式中，终端设备基于第一操作确定第一小区与第二小区的第一时间差。进一步，终端设备基于第二小区的TA和第一时间差，确定第一小区的TA。
这里，第一小区与第二小区的第一时间差可以是第一小区与第二小区的下行定时时间差，或者，可以是第一小区与第二小区的下行接收定时时间差(RX timing difference)。
作为示例：第二小区的TA为TA1，第一时间差为offset，第一小区的TA为TA2，那么有：TA2＝TA1+2*offset。
方案二
在一些实施方式中，第一信令包含第一小区对应的第二时间偏移。在此基础上，终端设备基于第二小区的TA、第一时间差以及第二时间偏移，确定第一小区的TA。
在一些实施方式中，第一小区对应的第二时间偏移包括以下至少之一：
上行TA调整对应的时间偏移；
下行定时误差对应的时间偏移；
上下行转换对应的时间偏移。
这里，下行定时误差是指第一小区与第二小区的下行定时误差。
这里，第二时间偏移可以包含上行TA的调整值(即上行TA调整对应的时间偏移)和/或下行定时误差导致的时间偏移(即下行定时误差对应的时间偏移)和/或上下行转换导致的时间偏移(即上下行转换对应的时间偏移)。
这里，第二时间偏移可用于终端设备在进行TA计算时，对TA进行修正或者TA的计算。
作为示例：第二小区的TA为TA1，第一时间差为offset，第二时间偏移包括下行定时误差对应的时间偏移(Delta)，第一小区的TA为TA2，那么有：TA2＝TA1+2*(offset+Delta)。
作为示例：第二小区的TA为TA1，第一时间差为offset，第二时间偏移包括上下行转换对应的时间偏移(X)，第一小区的TA为TA2，那么有：TA2＝TA1+2*offset-X。
作为示例：第二小区的TA为TA1，第一时间差为offset，第二时间偏移包括下行定时误差对应的时间偏移(Delta)和上下行转换对应的时间偏移(X)，第一小区的TA为TA2，那么有：TA2＝TA1+2*(offset+Delta)-X。
在一些实施方式中，“终端设备能够获取到第一小区的TA”的认定/确认/确定，可以通过以下方案来实现：
方案A
方式1)在接收第一信令之后，终端设备能够获取到第一小区的TA。
这里，第一信令可以是RRC信令。网络设备和/或终端设备认定/确认/确定/认为终端设备在接收第一信令之后，终端设备能够获取到第一小区的TA。
方式2)在接收第一信令之后经过第一时间之后，终端设备能够获取到第一小区的TA。
这里，第一信令可以是RRC信令。网络设备和/或终端设备认定/确认/确定/认为终端设备在接收第一信令之后经过第一时间之后，终端设备能够获取到第一小区的TA。
方式3)在发送第一信令对应的确认消息之后经过第二时间之后，终端设备能够获取到第一小区的TA。
这里，第一信令可以是MAC CE，第一信令对应的确认消息可以是HARQ-ACK信息。网络设备和/或终端设备认定/确认/确定/认为终端设备在发送第一信令对应的确认消息之后经过第二时间之后，终端设备能够获取到第一小区的TA。
方案B
在一些实施方式中，终端设备获取到第一小区的TA之后，终端设备向网络设备发送第一信息或第二信令。第一信息或第二信令用于指示终端设备获取到第一小区的TA。
这里，第一信息或第二信令可以指示终端设备获取到部分或者全部第一小区的TA。
作为示例：网络设备通过第一信令指示或配置或激活对小区1、小区2以及小区3进行第一操作。终端设备对小区1、小区2以及小区3执行第一操作，获取到小区1和小区2的TA，通过第一信息或第二信令向网络设备指示终端设备获取到小区1和小区2的TA。
作为示例：网络设备通过第一信令指示或配置或激活对小区1、小区2以及小区3进行第一操作。终端设备对小区1、小区2以及小区3执行第一操作，获取到小区1、小区2以及小区3的TA，通过第一信息或第二信令向网络设备指示终端设备获取到小区1、小区2以及小区3的TA。
以下对上述第一信息或第二信令的具体实现方案进行说明。
实现方案1)在一些实施方式中，第一信息包括以下至少之一：第一小区与第二小区的第一时间差、第一小区的TA、第一小区的标识、第一指示信息，第一指示信息用于指示终端设备获取到第一小区的TA。这里，第一小区可以是一个或多个候选小区或者目标小区。
这里，第一信令可以包含截止到第一信令调度的上行传输时，终端设备已经获取到TA的小区的ID等信息。这里，第一信令可以仅包含小区的ID，用来指示已经完成TA获取的小区。或者，第一信令也可以包含小区的ID以及对应的TA和/或下行定时时间差和/或下行接收定时时间差等信息。第一信令也可以包含指示信息，用于指示终端获取到第一信令指示的所有小区的TA。第一信令也可以包含指示信息，用于指示终端获取到第一信令指示的一个或者多个小区的TA。
进一步，在一些实施方式中，第一信息通过第一上行资源传输；第一上行资源通过第一信令包含的上行调度信息进行指示；或者，第一上行资源通过终端设备的调度请求(Scheduling Request，SR)获得。
这里，上行调度信息也可以替换为上行授权(UL grant)信息。
这里，终端设备在执行完第一操作后，利用第一信令调度的第一上行资源传输第一信息；或者，终端设备在执行完第一操作后，进行上行传输的调度请求，利用获得的第一上行资源传输第一信息。
实现方案2)在一些实施方式中，第二信令为特定的SR，特定的SR用于指示终端设备获取到第一小区的TA。
这里，该SR可以基于RRC信令配置。
实现方案3)在一些实施方式中，第一信息为第一小区的上报信息，第一小区的上报信息用于指示终端设备获取到第一小区的TA。
这里，上报信息的上报方式为周期性上报或者半持续上报或者非周期上报。
进一步，在一些实施方式中，上报信息通过第二上行资源传输；第二上行资源通过第一信令包含的上行授权(UL grant)信息进行指示。
这里，上报信息可以是信道状态信息(Channel State Information，CSI)上报信息。CSI上报信息可以包含以下至少之一：参考信号接收功率(Reference Signal Receiving Power，RSRP)、信道质量指示(Channel Quality Indication，CQI)、CSI-RS资源指示(CSI-RS Resource Indicatio，CRI)、SSB索引(SSB index)、信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)等信息。更具体地，可以包含以下至少之一：cri-RI-PMI-CQI、cri-RI-i1、cri-RI-i1-CQI、cri-RI-CQI、cri-RSRP、cri-SINR、ssb-Index-RSRP、ssb-Index-SINR、cri-RI-LI-PMI-CQI、cri-RSRP-Index、ssb-Index-RSRP-Index、cri-SINR-Index、ssb-Index-SINR-Index。
在一些实施方式中，终端设备获取到第一小区的TA之后，方法还包括：终端设备接收网络设备发送的切换命令，切换命令用于指示终端设备切换至第三小区；其中，切换命令包含以下至少之一：第三小区的标识、第三小区的TA。
在一些实施方式中，第三小区可以是第一小区之外的小区。
在另一些实施方式中，第三小区可以是第一小区范围内的小区，也即，第三小区可以是第一小区(第一小区可以是多个小区)中的一个小区。
这里，第三小区是指小区切换的目标小区或者切换目标小区，为指定的某一个小区。第三小区可以是执行第一操作的小区中的一个。
这里，切换命令可以是第三小区的切换指示或者小区切换(cell switch)的指示。
在一些实施方式中，若切换命令包含第三小区的TA，则终端设备采用切换命令中包含的第三小区的TA，对第三小区进行上行传输；和/或，若切换命令不包含第三小区的TA，则终端设备采用计算的第三小区的TA，对第三小区进行上行传输。这里，计算的第三小区的TA也可以是基于终端设备测量得到的TA。
图4是本申请实施例提供的TA获取方法的流程示意图二，如图4所示，该TA获取方法包括以下步骤：
步骤401：网络设备向终端设备发送第一信令，第一信令用于指示或配置或激活对第一小区进行第一操作，第一操作包括以下至少之一：测量、下行同步、上行同步；其中，第一操作用于获取第一小区的TA。
本申请实施例中，网络设备向终端设备发送第一信令。在一些实施方式中，第一信令为MAC CE。在另一些实施方式中，第一信令为RRC信令。
本申请实施例中，第一信令用于指示或配置或激活对第一小区进行第一操作，第一操作包括以下至少之一：测量、下行同步、上行同步。这里，上行同步可以是上行定时的获取或者TA的获取。
需要说明的是，测量具体是指：终端设备对小区的下行信号进行测量或接收。下行信号可以是SSB，或者是其他类型的下行信号。
需要说明的是，下行同步/上行同步是基于测量实现的，通过测量小区的下行信号可以实现下行同步/上行同步。具体来说，通过测量小区的下行信号(如SSB)、可以实现下行同步，通过测量小区的下行信号(如SSB)可以实现上行定时的获取或者TA的获取，从而实现上行同步。
需要说明的是，第一小区的数目可以是一个或多个。作为示例：第一小区的数目为3个，第一信令用于指示或配置或激活对小区1、小区2以及小区3进行第一操作。
在一些实施方式中，第一信令包含第一小区对应的第二时间偏移。第二时间偏移用于终端设备获取第一小区的TA，具体获取方式可以参照前述 图3相关的方案。
在一些实施方式中，第一小区对应的第二时间偏移包括以下至少之一：
上行TA调整对应的时间偏移；
下行定时误差对应的时间偏移；
上下行转换对应的时间偏移。
这里，第二时间偏移可以包含上行TA的调整值(即上行TA调整对应的时间偏移)和/或下行定时误差导致的时间偏移(即下行定时误差对应的时间偏移)和/或上下行转换导致的时间偏移(即上下行转换对应的时间偏移)。
这里，下行定时误差是指第一小区与第二小区的下行定时误差。
在一些实施方式中，“终端设备能够获取到第一小区的TA”的认定/确认/确定，可以通过以下方案来实现：
方案A
方式1)在发送第一信令之后，终端设备能够获取到第一小区的TA。
这里，第一信令可以是RRC信令。网络设备认定/确认/确定/认为，网络设备在发送第一信令之后，终端设备能够获取到第一小区的TA。
方式2)在发送第一信令之后经过第一时间之后，终端设备能够获取到第一小区的TA。
这里，第一信令可以是RRC信令。网络设备认定/确认/确定/认为，网络设备在发送第一信令之后经过第一时间之后，终端设备能够获取到第一小区的TA。
方式3)在接收到第一信令对应的确认消息之后经过第二时间之后，终端设备能够获取到第一小区的TA。
这里，第一信令可以是MAC CE，第一信令对应的确认消息可以是HARQ-ACK信息。网络设备认定/确认/确定/认为，网络设备在接收到第一信令对应的确认消息之后经过第二时间之后，终端设备能够获取到第一小 区的TA。
对于上述方案A来说，不需要终端设备向网络设备进行反馈，网络设备认为终端设备能够通过第一操作计算或者获取第一小区的TA。或者，网络设备认为终端设备对于第一小区的TA的误差，可以再后续的上行传输中调整，或者，该误差不影响上行传输质量。网络设备确认终端设备能够获取第一小区的TA后，便可以向终端设备发送切换指令。
方案B
在一些实施方式中，网络设备接收终端设备发送的第一信息或第二信令。第一信息或第二信令用于指示终端设备获取到第一小区的TA。
这里，第一信息或第二信令可以指示终端设备获取到部分或者全部第一小区的TA。
作为示例：网络设备通过第一信令指示或配置或激活对小区1、小区2以及小区3进行第一操作。终端设备对小区1、小区2以及小区4执行第一操作，获取到小区1和小区2的TA，通过第一信息或第二信令向网络设备指示终端设备获取到小区1和小区2的TA。
作为示例：网络设备通过第一信令指示或配置或激活对小区1、小区2以及小区3进行第一操作。终端设备对小区1、小区2以及小区4执行第一操作，获取到小区1、小区2以及小区3的TA，通过第一信息或第二信令向网络设备指示终端设备获取到小区1、小区2以及小区3的TA。
以下对上述第一信息或第二信令的具体实现方案进行说明。
实现方案1)在一些实施方式中，第一信息包括以下至少之一：第一小区与第二小区的第一时间差、第一小区的TA、第一小区的标识、第一指示信息，第一指示信息用于指示终端设备获取到第一小区的TA。这里，第一小区可以是一个或多个候选小区或者目标小区。
进一步，在一些实施方式中，第一信息通过第一上行资源传输；第一上行资源通过第一信令包含的上行调度信息进行指示；或者，第一上行资 源通过终端设备的SR获得。
这里，上行调度信息也可以替换为上行授权(UL grant)信息。
实现方案2)在一些实施方式中，第二信令为特定的SR，特定的SR用于指示终端设备获取到第一小区的TA。
实现方案3)在一些实施方式中，第一信息为第一小区的上报信息，第一小区的上报信息用于指示终端设备获取到第一小区的TA。
这里，上报信息的上报方式为周期性上报或者半持续上报或者非周期上报。
进一步，在一些实施方式中，上报信息通过第二上行资源传输；第二上行资源通过第一信令包含的上行授权(UL grant)信息进行指示。
这里，上报信息可以是CSI上报信息。CSI上报信息可以包含以下至少之一：RSRP、CQI、CRI、SSB index、SINR等信息。更具体地，可以包含以下至少之一：cri-RI-PMI-CQI、cri-RI-i1、cri-RI-i1-CQI、cri-RI-CQI、cri-RSRP、cri-SINR、ssb-Index-RSRP、ssb-Index-SINR、cri-RI-LI-PMI-CQI、cri-RSRP-Index、ssb-Index-RSRP-Index、cri-SINR-Index、ssb-Index-SINR-Index。
在一些实施方式中，网络设备通过上述方案A或者方案B认定/确认/确定/认为，终端设备获取到第一小区的TA之后，方法还包括：网络设备向终端设备发送切换命令，切换命令用于指示终端设备切换至第三小区；其中，切换命令包含以下至少之一：第三小区的标识、第三小区的TA。
这里，第三小区是指小区切换的目标小区或者切换目标小区，为指定的某一个小区。第三小区可以是执行第一操作的小区中的一个。
这里，切换命令可以是第三小区的切换指示或者小区切换(cell switch)的指示。
图5是本申请实施例提供的TA获取方法的流程示意图三，基站是指服务小区对应的基站，终端设备是UE，第一小区包括候选小区#1和候选小区#2(即第一小区的数目为2个)，第二小区是服务小区，第三小区是候选小 区#1，如图5所示，该TA获取方法包括以下步骤：
步骤501：基站向UE发送第一信令，第一信令用于指示或配置或激活对候选小区#1和候选小区#2进行测量和/或下行同步和/或上行同步。
步骤502：候选小区#1发送下行信号，候选小区#2发送下行信号。下行信号可以是SSB或者其他类型的信号。
步骤503：UE测量候选小区#1的下行信号和候选小区#2的下行信号。
步骤504：UE根据候选小区#1和服务小区的下行信号的接收时间差(即下行接收定时时间差)以及服务小区的TA、第二时间偏移(可选)，计算候选小区#1的TA；UE根据候选小区#2和服务小区的下行信号的接收时间差(即下行接收定时时间差)以及服务小区的TA、第二时间偏移(可选)，计算候选小区#2的TA。
步骤505：UE向基站发送第一信息或第二信令，第一信息或第二信令用于指示终端设备获取到候选小区#1和候选小区#2的TA。
这里，第一信息或第二信令的具体实现可以参照前述图3和图4相关的方案。
步骤506：基站向UE发送切换命令。
这里，切换命令可以是到候选小区#1(即目标小区)的切换命令或者小区切换命令。
这里，切换命令可以包含候选小区#1的ID和TA，这种情况下，UE采用切换命令中包含的TA对候选小区#1进行上行传输。
这里，切换命令可以仅包含候选小区#1的ID。这种情况下，UE采用计算的候选小区#1的TA(或是测量得到的候选小区#1的TA)对候选小区#1进行上行传输。
以下结合具体应用实例对如何计算小区的TA进行举例说明。以下应用实例中，以UE基于下行接收定时时间差计算小区的TA进行说明，不局限于此，UE也可以基于下行定时时间差计算小区的TA。如图6所示，小区1 和小区2可以是传输节点1(或者基站1)和传输节点2(或者基站2)，小区1向UE发送下行信号(如SSB#1)，小区2向UE发送下行信号(如SSB#2)。
应用实例一
参照图7-1，图7-1示意出了计算TA2的示意图，具体如下：
1)TA的确定
在单小区的情况下，TA是2倍的传播时延，因此小区1和小区2的TA满足如下公式：
TA1＝2*TP1
TA2＝2*TP2
其中，TA1为小区1的TA，TA2为小区2的TA。
2)下行接收定时时间差的确定
Offset为下行接收定时时间差，即UE接收下行节点1和节点2的下行信号的时间差，Offset满足如下公式：
Offset＝TP2-TP1
3)UE可以根据TA1以及offset，计算小区2的TA2，TA2满足如下公式：
TA2＝TA1+2*offset
应用实例二
参照图7-2，图7-2示意出了计算TA2的示意图，具体如下：
1)TA的确定
在单小区的情况下，TA是2倍的传播时延，因此小区1和小区2的TA满足如下公式：
TA1＝2*TP1
TA2＝2*TP2
其中，TA1为小区1的TA，TA2为小区2的TA。
2)下行接收定时时间差的确定
小区间下行定时存在误差，误差为delta(即下行定时误差)，这种情况下，下行接收定时时间差Offset满足如下公式：
offset＝TP2-TP1+Delta
Delta可以通过小区间的交互获取或者通过其他终端上报的信息来获取。
3)UE可以根据TA1以及offset，计算小区2的TA2，TA2满足如下公式：
TA2＝TA1+2*(offset+Delta)
应用实例三
参照图7-3，图7-3示意出了计算TA2的示意图，具体如下：
1)TA的确定
在单小区的情况下，TA是2倍的传播时延，因此小区1和小区2的TA满足如下公式：
TA1＝2*TP1
TA2＝2*TP2
其中，TA1为小区1的TA，TA2为小区2的TA。
2)下行接收定时时间差的确定
小区间下行定时存在误差，误差为delta(即下行定时误差)，这种情况下，下行接收定时时间差Offset满足如下公式：
offset＝TP2-TP1+Delta
这里，Delta可以通过小区间的交互获取或者通过其他终端上报的信息来获取。
3)小区2的TA2的确定
小区2的下行传输与上行传输之间存在转换时间(gap)X，这种情况下，UE可以根据TA1、offset以及X，计算小区2的TA2，TA2满足如下公式：
TA2＝TA1+2*(offset+Delta)-X
这里，上下行转换时间为基站的实现参数，可以通过基站进一步指示来告知UE。
本申请实施例的技术方案，1)基于UE的下行测量，对上行TA进行估计，可以避免由于PDCCH order的RACH引入的调度和TA指示，导致的时延。UE可以基于本身的测量和已有的当前服务小区的TA的信息，计算到目标小区的TA，可以降低时延，提高UE的灵活性。2)复用下行测量的指示，一方面缩小UE进行下行同步，以及TA计算的小区范围。同时，复用该指示用于指示下行测量或者同步的特点，能够更好的服务本方案中基于多个候选小区接收时间差，减少指示和UE的计算量。3)引入基于cell switch中TA的指示或者候选小区的指示信息，指示UE需要使用的上行TA，从而一方面可以保证UE或者更准去的TA或者定时信息，也可以通过降低开销的方式，告知UE选用哪个计算出来的TA值进行上行传输。
图8是本申请实施例提供的TA获取装置的结构组成示意图一，应用于终端设备，如图8所示，所述TA获取装置包括：
接收单元801，配置为接收网络设备发送的第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；
确定单元802，配置为对所述第一小区执行第一操作，基于所述第一操作获取所述第一小区的TA。
在一些实施方式中，所述确定单元802，配置为基于所述第一操作确定所述第一小区与第二小区的第一时间差。基于所述第二小区的TA和所述第一时间差，确定所述第一小区的TA。
在一些实施方式中，所述第一信令包含所述第一小区对应的第二时间偏移。
在一些实施方式中，所述确定单元802，配置为基于所述第二小区的TA、所述第一时间差以及所述第二时间偏移，确定所述第一小区的TA。
在一些实施方式中，所述第二时间偏移包括以下至少之一：
上行TA调整对应的时间偏移；
下行定时误差对应的时间偏移；
上下行转换对应的时间偏移。
在一些实施方式中，在接收所述第一信令之后，所述终端设备能够获取到所述第一小区的TA；和/或，在接收所述第一信令之后经过第一时间之后，所述终端设备能够获取到所述第一小区的TA；和/或，在发送所述第一信令对应的确认消息之后经过第二时间之后，所述终端设备能够获取到所述第一小区的TA。
在一些实施方式中，所述装置还包括：发送单元803，配置为向所述网络设备发送第一信息或第二信令。
在一些实施方式中，所述第一信息或第二信令用于指示所述终端设备获取到所述第一小区的TA。
在一些实施方式中，所述第一信息包括以下至少之一：所述第一小区与第二小区的第一时间差、所述第一小区的TA、所述第一小区的标识、第一指示信息，所述第一指示信息用于指示所述终端设备获取到所述第一小区的TA。
在一些实施方式中，所述第一信息通过第一上行资源传输；
所述第一上行资源通过所述第一信令包含的上行调度信息进行指示；或者，
所述第一上行资源通过所述终端设备的SR获得。
在一些实施方式中，所述第二信令为特定的SR，所述特定的SR用于指示所述终端设备获取到所述第一小区的TA。
在一些实施方式中，所述第一信息为所述第一小区的上报信息，所述第一小区的上报信息用于指示所述终端设备获取到所述第一小区的TA。
在一些实施方式中，所述上报信息的上报方式为周期性上报或者半持 续上报或者非周期上报。
在一些实施方式中，所述上报信息通过第二上行资源传输；
所述第二上行资源通过所述第一信令包含的上行授权信息进行指示。
在一些实施方式中，所述接收单元801，配置为接收所述网络设备发送的切换命令，所述切换命令用于指示所述终端设备切换至第三小区；其中，所述切换命令包含以下至少之一：所述第三小区的标识、所述第三小区的TA。
在一些实施方式中，若所述切换命令包含所述第三小区的TA，则所述发送单元803采用所述切换命令中包含的第三小区的TA，对所述第三小区进行上行传输；和/或，若所述切换命令不包含所述第三小区的TA，则所述发送单元803采用计算的所述第三小区的TA，对所述第三小区进行上行传输。
在一些实施方式中，所述第一信令为MAC CE或者RRC信令。
本领域技术人员应当理解，图8所示的TA获取装置中的各单元的实现功能可参照前述方法的相关描述而理解。图8所示的TA获取装置中的各单元的功能可通过运行于处理器上的程序而实现，也可通过具体的逻辑电路而实现。
图9是本申请实施例提供的TA获取装置的结构组成示意图二，应用于网络设备，如图9所示，所述TA获取装置包括：
发送单元901，配置为向终端设备发送第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；其中，所述第一操作用于获取所述第一小区的TA。
在一些实施方式中，所述第一信令包含所述第一小区对应的第二时间偏移。
在一些实施方式中，所述第二时间偏移包括以下至少之一：
上行TA调整对应的时间偏移；
下行定时误差对应的时间偏移；
上下行转换对应的时间偏移。
在一些实施方式中，在发送所述第一信令之后，所述终端设备能够获取到所述第一小区的TA；和/或，
在发送所述第一信令之后经过第一时间之后，所述终端设备能够获取到所述第一小区的TA；和/或，
在接收到所述第一信令对应的确认消息之后经过第二时间之后，所述终端设备能够获取到所述第一小区的TA。
在一些实施方式中，所述装置还包括：接收单元902，配置为接收所述终端设备发送的第一信息或第二信令。
在一些实施方式中，所述第一信息或第二信令用于指示所述终端设备获取到所述第一小区的TA。
在一些实施方式中，所述第一信息包括以下至少之一：所述第一小区与第二小区的第一时间差、所述第一小区的TA、所述第一小区的标识、第一指示信息，所述第一指示信息用于指示所述终端设备获取到所述第一小区的TA。
在一些实施方式中，所述第一信息通过第一上行资源传输；
所述第一上行资源通过所述第一信令包含的上行调度信息进行指示；或者，
所述第一上行资源通过所述终端设备的SR获得。
在一些实施方式中，所述第二信令为特定的SR，所述特定的SR用于指示所述终端设备获取到所述第一小区的TA。
在一些实施方式中，所述第一信息为所述第一小区的上报信息，所述第一小区的上报信息用于指示所述终端设备获取到所述第一小区的TA。
在一些实施方式中，所述上报信息的上报方式为周期性上报或者半持 续上报或者非周期上报。
在一些实施方式中，所述上报信息通过第二上行资源传输；
所述第二上行资源通过所述第一信令包含的上行授权信息进行指示。
在一些实施方式中，所述发送单元901，配置为向所述终端设备发送切换命令，所述切换命令用于指示所述终端设备切换至第三小区；其中，所述切换命令包含以下至少之一：所述第三小区的标识、所述第三小区的TA。
在一些实施方式中，所述第一信令为MAC CE或者RRC信令。
本领域技术人员应当理解，图9所示的TA获取装置中的各单元的实现功能可参照前述方法的相关描述而理解。图9所示的TA获取装置中的各单元的功能可通过运行于处理器上的程序而实现，也可通过具体的逻辑电路而实现。
图10是本申请实施例提供的一种通信设备1000示意性结构图。该通信设备可以是终端设备或者网络设备，图10所示的通信设备1000包括处理器1010，处理器1010可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图10所示，通信设备1000还可以包括存储器1020。其中，处理器1010可以从存储器1020中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器1020可以是独立于处理器1010的一个单独的器件，也可以集成在处理器1010中。
可选地，如图10所示，通信设备1000还可以包括收发器1030，处理器1010可以控制该收发器1030与其他设备进行通信，具体地，可以向其他设备发送信息或数据，或接收其他设备发送的信息或数据。
其中，收发器1030可以包括发射机和接收机。收发器1030还可以进一步包括天线，天线的数量可以为一个或多个。
可选地，该通信设备1000具体可为本申请实施例的网络设备，并且该 通信设备1000可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该通信设备1000具体可为本申请实施例的移动终端/终端设备，并且该通信设备1000可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
图11是本申请实施例的芯片的示意性结构图。图11所示的芯片1100包括处理器1110，处理器1110可以从存储器中调用并运行计算机程序，以实现本申请实施例中的方法。
可选地，如图11所示，芯片1100还可以包括存储器1120。其中，处理器1110可以从存储器1120中调用并运行计算机程序，以实现本申请实施例中的方法。
其中，存储器1120可以是独立于处理器1110的一个单独的器件，也可以集成在处理器1110中。
可选地，该芯片1100还可以包括输入接口1130。其中，处理器1110可以控制该输入接口1130与其他设备或芯片进行通信，具体地，可以获取其他设备或芯片发送的信息或数据。
可选地，该芯片1100还可以包括输出接口1140。其中，处理器1110可以控制该输出接口1140与其他设备或芯片进行通信，具体地，可以向其他设备或芯片输出信息或数据。
可选地，该芯片可应用于本申请实施例中的网络设备，并且该芯片可以实现本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该芯片可应用于本申请实施例中的移动终端/终端设备，并且该芯片可以实现本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片， 芯片系统或片上系统芯片等。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced  SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，上述存储器为示例性但不是限制性说明，例如，本申请实施例中的存储器还可以是静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(doubledata rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synch link DRAM，SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)等等。也就是说，本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质，用于存储计算机程序。
可选的，该计算机可读存储介质可应用于本申请实施例中的网络设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机可读存储介质可应用于本申请实施例中的移动终端/终端设备，并且该计算机程序使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序产品，包括计算机程序指令。
可选的，该计算机程序产品可应用于本申请实施例中的网络设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序产品可应用于本申请实施例中的移动终端/终端 设备，并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本申请实施例还提供了一种计算机程序。
可选的，该计算机程序可应用于本申请实施例中的网络设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由网络设备实现的相应流程，为了简洁，在此不再赘述。
可选地，该计算机程序可应用于本申请实施例中的移动终端/终端设备，当该计算机程序在计算机上运行时，使得计算机执行本申请实施例的各个方法中由移动终端/终端设备实现的相应流程，为了简洁，在此不再赘述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的， 作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，)ROM、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (37)

  1. 一种定时提前量TA获取方法，所述方法包括：
    终端设备接收网络设备发送的第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；
    所述终端设备对所述第一小区执行第一操作，基于所述第一操作获取所述第一小区的TA。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    基于所述第一操作确定所述第一小区与第二小区的第一时间差。
  3. 根据权利要求2所述的方法，其中，所述基于所述第一操作获取所述第一小区的TA，包括：
    基于所述第二小区的TA和所述第一时间差，确定所述第一小区的TA。
  4. 根据权利要求1所述的方法，其中，所述第一信令包含所述第一小区对应的第二时间偏移。
  5. 根据权利要求2所述的方法，其中，所述基于所述第一操作确定所述第一小区的TA，包括：
    基于所述第二小区的TA、所述第一时间差以及所述第二时间偏移，确定所述第一小区的TA。
  6. 根据权利要求4所述的方法，其中，所述第二时间偏移包括以下至少之一：
    上行TA调整对应的时间偏移；
    下行定时误差对应的时间偏移；
    上下行转换对应的时间偏移。
  7. 根据权利要求1所述的方法，其中，
    在接收所述第一信令之后，所述终端设备能够获取到所述第一小区的 TA；和/或，
    在接收所述第一信令之后经过第一时间之后，所述终端设备能够获取到所述第一小区的TA；和/或，
    在发送所述第一信令对应的确认消息之后经过第二时间之后，所述终端设备能够获取到所述第一小区的TA。
  8. 根据权利要求1所述的方法，其中，所述方法还包括：
    所述终端设备向所述网络设备发送第一信息或第二信令。
  9. 根据权利要求8所述的方法，其中，所述第一信息或第二信令用于指示所述终端设备获取到所述第一小区的TA。
  10. 根据权利要求8所述的方法，其中，所述第一信息包括以下至少之一：所述第一小区与第二小区的第一时间差、所述第一小区的TA、所述第一小区的标识、第一指示信息，所述第一指示信息用于指示所述终端设备获取到所述第一小区的TA。
  11. 根据权利要求10所述的方法，其中，所述第一信息通过第一上行资源传输；
    所述第一上行资源通过所述第一信令包含的上行调度信息进行指示；或者，
    所述第一上行资源通过所述终端设备的调度请求SR获得。
  12. 根据权利要求8所述的方法，其中，所述第二信令为特定的SR，所述特定的SR用于指示所述终端设备获取到所述第一小区的TA。
  13. 根据权利要求8所述的方法，其中，所述第一信息为所述第一小区的上报信息，所述第一小区的上报信息用于指示所述终端设备获取到所述第一小区的TA。
  14. 根据权利要求13所述的方法，其中，所述上报信息的上报方式为周期性上报或者半持续上报或者非周期上报。
  15. 根据权利要求13所述的方法，其中，所述上报信息通过第二上行 资源传输；
    所述第二上行资源通过所述第一信令包含的上行授权信息进行指示。
  16. 根据权利要求1至15中任一项所述的方法，其中，所述方法还包括：
    所述终端设备接收所述网络设备发送的切换命令，所述切换命令用于指示所述终端设备切换至第三小区；其中，所述切换命令包含以下至少之一：所述第三小区的标识、所述第三小区的TA。
  17. 根据权利要求16所述的方法，其中，所述方法还包括：
    若所述切换命令包含所述第三小区的TA，则所述终端设备采用所述切换命令中包含的第三小区的TA，对所述第三小区进行上行传输；和/或，
    若所述切换命令不包含所述第三小区的TA，则所述终端设备采用计算的所述第三小区的TA，对所述第三小区进行上行传输。
  18. 根据权利要求1至15中任一项所述的方法，其中，所述第一信令为MAC CE或者RRC信令。
  19. 一种TA获取方法，所述方法包括：
    网络设备向终端设备发送第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；其中，所述第一操作用于获取所述第一小区的TA。
  20. 根据权利要求19所述的方法，其中，所述第一信令包含所述第一小区对应的第二时间偏移。
  21. 根据权利要求20所述的方法，其中，所述第二时间偏移包括以下至少之一：
    上行TA调整对应的时间偏移；
    下行定时误差对应的时间偏移；
    上下行转换对应的时间偏移。
  22. 根据权利要求19所述的方法，其中，所述方法还包括：
    在发送所述第一信令之后，所述终端设备能够获取到所述第一小区的TA；和/或，
    在发送所述第一信令之后经过第一时间之后，所述终端设备能够获取到所述第一小区的TA；和/或，
    在接收到所述第一信令对应的确认消息之后经过第二时间之后，所述终端设备能够获取到所述第一小区的TA。
  23. 根据权利要求19所述的方法，其中，所述方法还包括：
    所述网络设备接收所述终端设备发送的第一信息或第二信令。
  24. 根据权利要求23所述的方法，其中，所述第一信息或第二信令用于指示所述终端设备获取到所述第一小区的TA。
  25. 根据权利要求23所述的方法，其中，所述第一信息包括以下至少之一：所述第一小区与第二小区的第一时间差、所述第一小区的TA、所述第一小区的标识、第一指示信息，所述第一指示信息用于指示所述终端设备获取到所述第一小区的TA。
  26. 根据权利要求25所述的方法，其中，所述第一信息通过第一上行资源传输；
    所述第一上行资源通过所述第一信令包含的上行调度信息进行指示；或者，
    所述第一上行资源通过所述终端设备的SR获得。
  27. 根据权利要求23所述的方法，其中，所述第二信令为特定的SR，所述特定的SR用于指示所述终端设备获取到所述第一小区的TA。
  28. 根据权利要求23所述的方法，其中，所述第一信息为所述第一小区的上报信息，所述第一小区的上报信息用于指示所述终端设备获取到所述第一小区的TA。
  29. 根据权利要求28所述的方法，其中，所述上报信息的上报方式为周期性上报或者半持续上报或者非周期上报。
  30. 根据权利要求28所述的方法，其中，所述上报信息通过第二上行资源传输；
    所述第二上行资源通过所述第一信令包含的上行授权信息进行指示。
  31. 根据权利要求19至30中任一项所述的方法，其中，所述方法还包括：
    所述网络设备向所述终端设备发送切换命令，所述切换命令用于指示所述终端设备切换至第三小区；其中，所述切换命令包含以下至少之一：所述第三小区的标识、所述第三小区的TA。
  32. 根据权利要求19至30中任一项所述的方法，其中，所述第一信令为MAC CE或者RRC信令。
  33. 一种TA获取装置，应用于终端设备，所述装置包括：
    接收单元，配置为接收网络设备发送的第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；
    确定单元，配置为对所述第一小区执行第一操作，基于所述第一操作获取所述第一小区的TA。
  34. 一种TA获取装置，应用于网络设备，所述装置包括：
    发送单元，配置为向终端设备发送第一信令，所述第一信令用于指示或配置或激活对第一小区进行第一操作，所述第一操作包括以下至少之一：测量、下行同步、上行同步；其中，所述第一操作用于获取所述第一小区的TA。
  35. 一种终端设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执行如权利要求1至18中任一项所述的方法。
  36. 一种网络设备，包括：处理器和存储器，该存储器用于存储计算机程序，所述处理器用于调用并运行所述存储器中存储的计算机程序，执 行如权利要求19至32中任一项所述的方法。
  37. 一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行如权利要求1至18中任一项所述的方法，或者权利要求19至32中任一项所述的方法。
PCT/CN2024/101648 2023-06-27 2024-06-26 一种ta获取方法及装置、终端设备、网络设备 Ceased WO2025002181A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2024310215A AU2024310215A1 (en) 2023-06-27 2024-06-26 TA Obtaining Method and Apparatus, Terminal Device, and Network Device
EP24830818.1A EP4727225A1 (en) 2023-06-27 2024-06-26 Ta acquisition method, apparatus, terminal device and network device
MX2025015748A MX2025015748A (es) 2023-06-27 2025-12-19 Metodo y aparato de obtencion de ta, dispositivo terminal y dispositivo de red

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202310773398.1A CN119212067A (zh) 2023-06-27 2023-06-27 一种ta获取方法及装置、终端设备、网络设备
CN202310773398.1 2023-06-27

Publications (1)

Publication Number Publication Date
WO2025002181A1 true WO2025002181A1 (zh) 2025-01-02

Family

ID=93937441

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/101648 Ceased WO2025002181A1 (zh) 2023-06-27 2024-06-26 一种ta获取方法及装置、终端设备、网络设备

Country Status (5)

Country Link
EP (1) EP4727225A1 (zh)
CN (1) CN119212067A (zh)
AU (1) AU2024310215A1 (zh)
MX (1) MX2025015748A (zh)
WO (1) WO2025002181A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200045745A1 (en) * 2018-08-03 2020-02-06 Comcast Cable Communications, Llc Uplink And Downlink Synchronization Procedures
CN113647128A (zh) * 2019-09-12 2021-11-12 Oppo广东移动通信有限公司 无线通信方法、终端设备和网络设备
CN115529624A (zh) * 2021-06-26 2022-12-27 华为技术有限公司 一种移动性管理方法及通信装置
CN115811764A (zh) * 2021-09-14 2023-03-17 维沃移动通信有限公司 小区切换方法、装置、终端及网络侧设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200045745A1 (en) * 2018-08-03 2020-02-06 Comcast Cable Communications, Llc Uplink And Downlink Synchronization Procedures
CN113647128A (zh) * 2019-09-12 2021-11-12 Oppo广东移动通信有限公司 无线通信方法、终端设备和网络设备
CN115529624A (zh) * 2021-06-26 2022-12-27 华为技术有限公司 一种移动性管理方法及通信装置
CN115811764A (zh) * 2021-09-14 2023-03-17 维沃移动通信有限公司 小区切换方法、装置、终端及网络侧设备

Also Published As

Publication number Publication date
AU2024310215A1 (en) 2026-01-22
MX2025015748A (es) 2026-02-03
CN119212067A (zh) 2024-12-27
EP4727225A1 (en) 2026-04-15

Similar Documents

Publication Publication Date Title
US12160831B2 (en) Reference signal determination method and device, and UE
CN113810924B (zh) 一种小区测量方法及装置
US12213122B2 (en) Method and apparatus for beam management, and computer-readable storage medium
US20230422109A1 (en) Cell handover method and apparatus, and terminal, base station and storage medium
US11265871B2 (en) Relay transmission method and apparatus
WO2020147615A1 (zh) 波束失败恢复方法、终端及基站
US12407485B2 (en) Implicit update of activated TCI states
CN114423082A (zh) 移动通信中用于多上行链路载波数据传输的方法及其装置
US20220104160A1 (en) Latency compensation method, device and storage medium
CN112655252B (zh) 同步指示方法、终端设备、网络设备、芯片及存储介质
KR102479423B1 (ko) 간섭 처리 방법, 장치 및 시스템
US12035406B2 (en) Method and device for beam determination for DRX, UE and network device
US20230318784A1 (en) Wireless communication method and device
WO2020257994A1 (zh) 用于传输数据的方法及设备
US11259234B2 (en) Path switching method and related device
US12232050B2 (en) Information reporting method and apparatus, and user equipment
EP3751889B1 (en) Wireless communication method and device
US20230319613A1 (en) Method and apparatus for determining measurement gap, and terminal device
EP4184968A1 (en) Random access resource selection method and related device
WO2022143926A1 (zh) 时间同步的方法和通信装置
US12302180B2 (en) Enabling special UE measurement behavior
AU2018436336A1 (en) Wireless communication method, terminal device, and network device
WO2025002181A1 (zh) 一种ta获取方法及装置、终端设备、网络设备
CN121195555A (zh) 用于移动通信中层1或层2触发移动性的上行链路同步的方法
CN120499761A (zh) 小区切换方法、设备、存储介质及产品

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24830818

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: MX/A/2025/015748

Country of ref document: MX

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112025028106

Country of ref document: BR

WWE Wipo information: entry into national phase

Ref document number: AU2024310215

Country of ref document: AU

Ref document number: 2024830818

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2024830818

Country of ref document: EP

Effective date: 20260107

ENP Entry into the national phase

Ref document number: 2024310215

Country of ref document: AU

Date of ref document: 20240626

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2024830818

Country of ref document: EP

Effective date: 20260107

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 11202508674Y

Country of ref document: SG

WWP Wipo information: published in national office

Ref document number: 11202508674Y

Country of ref document: SG

ENP Entry into the national phase

Ref document number: 2024830818

Country of ref document: EP

Effective date: 20260107

WWP Wipo information: published in national office

Ref document number: MX/A/2025/015748

Country of ref document: MX

ENP Entry into the national phase

Ref document number: 2024830818

Country of ref document: EP

Effective date: 20260107

WWP Wipo information: published in national office

Ref document number: 2024830818

Country of ref document: EP