Timing advance determination method and apparatus, and processor-readable storage medium

Abstract

The present disclosure belongs to the field of communications. Provided are a timing advance determination method and apparatus, and a processor-readable storage medium. The timing advance (TA) determination method, which is executed by a terminal, comprises: receiving TA acquisition indication information from a network device; and according to the TA acquisition indication information, determining the value of a TA by using at least one of the following means: keeping the value of the TA unchanged; using the value of the TA determined according to a preset rule; a terminal adjusting the value of the TA; and using 0 as the value of the TA.

Description

Timing advance determination method and device, and processor-readable storage medium

[0001] This disclosure claims priority to Chinese patent application number 202310369452.6, filed with the China Patent Office on April 7, 2023, entitled “Method and device for determining timing advance, processor-readable storage medium,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0002] The present disclosure relates to the field of communications, and in particular to a timing advance determination method and device, and a processor-readable storage medium. Background Art

[0003] When a terminal moves to a new cell, the terminal obtains uplink time synchronization, that is, obtains timing advance (TA), through a random access process.

[0004] Low-power terminals operate in a non-connected state (Radio Resource Control (RRC) inactive state (RRC_INACTIVE) / RRC idle state (RRC_IDLE)) for positioning. If a terminal still uses random access to obtain uplink synchronization after moving to a new cell, this will increase the terminal's power consumption. Especially when the terminal moves between multiple cells, it needs to frequently perform random access to obtain uplink synchronization in different cells, which cannot meet low power requirements.

[0005] Summary of the Invention

[0006] The present disclosure aims to provide a method and apparatus for determining timing advance, and a processor-readable storage medium, which can save power consumption of a terminal.

[0007] An embodiment of the present disclosure provides a method for determining a timing advance (TA), which is executed by a terminal and includes:

[0008] Receiving TA acquisition indication information of the network device;

[0009] The value of TA is determined according to the TA acquisition indication information using at least one of the following methods:

[0010] Keep the value of TA unchanged;

[0011] The value of TA is determined by using preset rules;

[0012] The terminal adjusts the value of TA;

[0013] The value of TA is 0.

[0014] In some embodiments, the TA obtaining indication information includes:

[0015] The terminal determines the value of TA; or

[0016] TA type identifier;

[0017] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0018] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0019] In some embodiments, when the TA acquisition indication information includes a TA type identifier,

[0020] The terminal moves from a source cell to a target cell. If the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the terminal uses the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the terminal adjusts the TA value; or

[0021] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the terminal adjusts the TA value.

[0022] In some embodiments, adjusting the value of TA includes:

[0023] The terminal measures downlink reference signals of different cells and determines the downlink arrival time difference between the cells according to the measurement results;

[0024] The value of TA is adjusted according to the downlink arrival time difference.

[0025] In some embodiments, the terminal measures downlink reference signals of different cells, determines the downlink arrival time difference between the cells based on the measurement results, and adjusts the value of TA based on the downlink arrival time difference, including:

[0026] The terminal moves from the source cell to the target cell, and measures the arrival time of the downlink reference signals of the source cell and the target cell to obtain the downlink arrival time difference between the cells; the value of the TA of the source cell is added to the downlink arrival time difference to obtain the value of the TA of the target cell.

[0027] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells.

[0028] In some embodiments, when the TA acquisition indication information includes a manner in which the terminal determines a TA value, the method further includes:

[0029] Receive inter-cell synchronization information from a network device, and adjust the value of TA according to the inter-cell synchronization information.

[0030] In some embodiments, the inter-cell synchronization information includes a synchronization difference of each cell relative to a reference cell.

[0031] An embodiment of the present disclosure provides a method for determining a timing advance (TA), which is performed by a network device and includes:

[0032] Sending TA acquisition indication information to the terminal, where the TA acquisition indication information instructs the terminal to determine the TA in at least one of the following ways:

[0033] Keep the value of TA unchanged;

[0034] The value of TA is determined by using preset rules;

[0035] The terminal adjusts the value of TA;

[0036] The value of TA is 0.

[0037] In some embodiments, the TA obtaining indication information includes:

[0038] The terminal determines the value of TA; or

[0039] TA type identifier;

[0040] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0041] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0042] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells.

[0043] In some embodiments, when the TA acquisition indication information includes a manner in which the terminal determines a TA value, the method further includes:

[0044] Sending inter-cell synchronization information to the terminal, instructing the terminal to adjust the value of TA according to the inter-cell synchronization information.

[0045] In some embodiments, the inter-cell synchronization information includes a synchronization difference of each cell relative to a reference cell.

[0046] In some embodiments, when the TA acquisition indication information includes a TA type identifier,

[0047] The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to use the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to adjust the TA value; or

[0048] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA acquisition indication information instructs the terminal to adjust the TA value.

[0049] The present disclosure provides a timing advance (TA) determination device, including a memory, a transceiver, and a processor.

[0050] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0051] Receiving TA acquisition indication information of the network device;

[0052] The value of TA is determined according to the TA acquisition indication information using at least one of the following methods:

[0053] Keep the value of TA unchanged;

[0054] The value of TA is determined by using preset rules;

[0055] The terminal adjusts the value of TA;

[0056] The value of TA is 0.

[0057] In some embodiments, the TA obtaining indication information includes:

[0058] The terminal determines the value of TA; or

[0059] TA type identifier;

[0060] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0061] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0062] In some embodiments, when the TA acquisition indication information includes a TA type identifier, the processor is configured to read the computer program in the memory and perform the following operations:

[0063] The terminal moves from a source cell to a target cell. If the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the terminal uses the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the terminal adjusts the value of the TA; or

[0064] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA value is adjusted.

[0065] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0066] Measure the downlink reference signals of different cells and determine the downlink arrival time difference between cells based on the measurement results;

[0067] The value of TA is adjusted according to the downlink arrival time difference.

[0068] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0069] The terminal moves from the source cell to the target cell, measures the arrival time of the downlink reference signals of the source cell and the target cell, and obtains the downlink arrival time difference between the cells; and adds the TA value of the source cell to the downlink arrival time difference to obtain the TA value of the target cell.

[0070] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells.

[0071] In some embodiments, when the TA acquisition indication information includes a manner in which the terminal determines a value of the TA, the processor is further configured to read a computer program in the memory and perform the following operations:

[0072] Receive inter-cell synchronization information from a network device, and adjust the value of TA according to the inter-cell synchronization information.

[0073] In some embodiments, the inter-cell synchronization information includes a synchronization difference of each cell relative to a reference cell.

[0074] The present disclosure provides a timing advance (TA) determination device, including a memory, a transceiver, and a processor.

[0075] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0076] Sending TA acquisition indication information to the terminal, where the TA acquisition indication information instructs the terminal to determine the TA in at least one of the following ways:

[0077] Keep the value of TA unchanged;

[0078] The value of TA is determined by using preset rules;

[0079] The terminal adjusts the value of TA;

[0080] The value of TA is 0.

[0081] In some embodiments, the TA obtaining indication information includes:

[0082] The terminal determines the value of TA; or

[0083] TA type identifier;

[0084] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0085] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0086] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells.

[0087] In some embodiments, when the TA acquisition indication information includes a manner in which the terminal determines a value of the TA, the processor is configured to read a computer program in the memory and perform the following operations:

[0088] Sending inter-cell synchronization information to the terminal, instructing the terminal to adjust the value of TA according to the inter-cell synchronization information.

[0089] In some embodiments, the inter-cell synchronization information includes a synchronization difference of each cell relative to a reference cell.

[0090] In some embodiments, when the TA acquisition indication information includes a TA type identifier,

[0091] The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to use the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to adjust the TA value; or

[0092] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA acquisition indication information instructs the terminal to adjust the TA value.

[0093] An embodiment of the present disclosure provides a timing advance (TA) determination device, including:

[0094] A receiving unit, configured to receive TA acquisition instruction information from a network device;

[0095] A determining unit is configured to determine a value of the TA according to the TA acquisition indication information by using at least one of the following methods:

[0096] Keep the value of TA unchanged;

[0097] The value of TA is determined by using preset rules;

[0098] The terminal adjusts the value of TA;

[0099] The value of TA is 0.

[0100] An embodiment of the present disclosure provides a timing advance (TA) determination device, including:

[0101] A sending unit is configured to send TA acquisition indication information to the terminal, where the TA acquisition indication information instructs the terminal to determine the TA in at least one of the following ways:

[0102] Keep the value of TA unchanged;

[0103] The value of TA is determined by using preset rules;

[0104] The terminal adjusts the value of TA;

[0105] The value of TA is 0.

[0106] An embodiment of the present disclosure provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor-readable storage medium to execute the above method.

[0107] The beneficial effects of the above technical solutions disclosed herein are as follows:

[0108] In the above scheme, the terminal determines the TA based on the TA acquisition indication information, and can keep the value of TA unchanged, and / or use the TA value determined by the preset rule, and / or the terminal adjusts the TA value by itself, and / or the TA value is 0. In this way, when the terminal moves within the effective area composed of multiple cells, the terminal does not need to frequently enter the connected state (RRC_CONNECTED) to obtain the TA of the new cell, thereby saving the power consumption of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0109] FIG1 is a schematic diagram of a wireless communication system architecture according to an embodiment of the present disclosure;

[0110] FIG2 is a schematic flow chart of a method for determining timing advance on a terminal side according to an embodiment of the present disclosure;

[0111] FIG3 is a flow chart of a timing advance determination method on a network device side according to an embodiment of the present disclosure;

[0112] FIG4 is a schematic diagram of a valid area of ​​a network device configuration according to an embodiment of the present disclosure;

[0113] FIG5 is a schematic diagram showing the composition of a timing advance determination apparatus on a terminal side according to an embodiment of the present disclosure;

[0114] FIG6 is a schematic diagram showing the composition of a timing advance determination apparatus on a network device side according to an embodiment of the present disclosure;

[0115] FIG7 is a structural block diagram of a timing advance determination apparatus on a terminal side according to an embodiment of the present disclosure;

[0116] FIG8 is a structural block diagram of a timing advance determination apparatus on a network device side according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0117] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0118] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0119] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0120] The technical solution provided by the embodiment of the present disclosure can be applicable to a variety of systems, especially the fifth generation mobile communication (5th-Generation, 5G) system. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new air interface (NR) system, etc. These various systems include terminal devices and network devices. The system may also include core network parts, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

[0121] Figure 1 shows a block diagram of a wireless communication system to which the embodiments of the present disclosure may be applied. The wireless communication system includes a terminal device and a network device.

[0122] The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing device connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0123] The network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or may be called another name. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a base transceiver station (BTS) in the Global System for Mobile communications (GSM) or code division multiple access (CDMA), a network device (NodeB) in wide-band code division multiple access (WCDMA), an evolutionary Node B (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0124] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be two-dimensional MIMO (2D-MIMO), three-dimensional MIMO (3D-MIMO), full-dimensional MIMO (FD-MIMO), or massive MIMO. It can also use diversity transmission, precoding transmission, or beamforming transmission.

[0125] The following first introduces the contents involved in the solution provided by the embodiment of the present disclosure.

[0126] When a terminal moves to a new cell, it obtains uplink time synchronization, i.e., timing advance (TA), through a random access process. The random access process can be a four-step process or a two-step process. Taking the four-step process as an example, the process is as follows:

[0127] Step 1: The terminal sends a random access preamble sequence, namely, message 1 (Msg1), on the physical random access channel (PRACH) resource.

[0128] Step 2: The terminal receives a random access response (RAR) message, i.e., message 2 (Msg2), on a physical downlink control channel (PDCCH) and / or a physical downlink shared channel (PDSCH).

[0129] Step 3: The terminal sends message 3 (Msg3) on the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH);

[0130] Step 4: The terminal receives a contention resolution message (ie, Msg4) on the PDSCH.

[0131] Among them, after the terminal sends the preamble sequence in Msg1, it detects the RAR message fed back by the downlink PDCCH and / or PDSCH within a RAR time window. If the corresponding RAR message is detected, it means that the preamble sequence sent by the terminal has been detected by the base station. The base station estimates the TA through this preamble sequence. At the same time, the TA value and the uplink scheduling permission for the transmission of message 3 for scheduling the terminal are indicated to the terminal through the RAR message. The terminal obtains uplink synchronization based on the TA and sends message 3 on the PUSCH according to the uplink scheduling permission. After receiving and parsing the terminal identifier contained in message 3, the base station sends message 4 on the PDSCH. The terminal receives and decodes the contention resolution message contained in message 4 on the PDSCH, and completes the 4-step random access process after the contention is successfully resolved.

[0132] To achieve uplink positioning, after completing the above uplink synchronization process, the terminal sends a Sounding Reference Signal (SRS) to the base station for positioning. After receiving the SRS, the base station performs time or angle measurement on the SRS and reports the measurement results to the positioning server for position calculation to obtain the terminal's location information.

[0133] For low-power terminals, positioning is performed in a non-connected state (RRC_INACTIVE / RRC_IDLE). If the terminal still uses the aforementioned random access process to obtain uplink synchronization after moving to a new cell, this will increase the terminal's power consumption. This is especially true when the terminal moves between multiple cells, as frequent random access is required to obtain uplink synchronization in different cells, which cannot meet low power requirements.

[0134] Based on the above, the embodiments of the present disclosure provide a timing advance determination method and apparatus, and a processor-readable storage medium, which can save power consumption of a terminal.

[0135] Among them, the method and the device are based on the same application concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0136] An embodiment of the present disclosure provides a method for determining a timing advance (TA), which is executed by a terminal, as shown in FIG2 , and includes:

[0137] Step S101: receiving TA acquisition instruction information from a network device;

[0138] Step S102: Determine the value of TA according to the TA acquisition indication information using at least one of the following methods:

[0139] Keep the value of TA unchanged;

[0140] The value of TA is determined by using preset rules;

[0141] The terminal adjusts the value of TA;

[0142] The value of TA is 0.

[0143] In this embodiment, the terminal determines the TA based on the TA acquisition indication information, and can keep the value of TA unchanged, and / or use the TA value determined by a preset rule, and / or the terminal adjusts the TA value by itself, and / or the TA value is 0. In this way, when the terminal moves within a valid area composed of multiple cells, the terminal does not need to frequently enter the connected state (RRC_CONNECTED) to obtain the TA of the new cell, thereby saving the power consumption of the terminal. The valid area is an area composed of multiple cells, and the terminal can move within the valid area.

[0144] Among them, the preset rule may be: determining that the value of TA is the value of TA of a certain reference cell, for example, it may be the value of TA obtained for the cell in which the terminal completes random access; or, the preset rule may be: determining that the value of TA is the value of TA of a certain reference cell and the sum of the downlink arrival time difference between the current cell and the reference cell; or, the preset rule may be: determining that the value of TA is the value of TA of a certain reference cell and the sum of the inter-cell synchronization difference between the current cell and the reference cell.

[0145] The preset rules may be defined in the protocol, or configured by the network device to the terminal, or pre-negotiated between the terminal and the network device, or determined by the terminal itself, etc.

[0146] In some embodiments, the TA obtaining indication information includes:

[0147] The terminal determines the value of TA; or

[0148] TA type identifier;

[0149] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0150] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0151] In this embodiment, the network device can pre-configure the terminal to determine the TA value or the TA type identifier, so that when the terminal moves in multiple cells, it can determine the TA according to the pre-configured terminal determination TA value or the TA type identifier, and can obtain the TA of different cells without frequently using the random access process, thereby reducing the power consumption of the terminal and ensuring the transmission of the positioning SRS reference signal.

[0152] In some embodiments, the terminal adjusting the value of TA includes the terminal adjusting the value of TA itself;

[0153] In some embodiments, the terminal adjusting the value of TA includes the terminal automatically adjusting the value of TA in combination with other relevant information;

[0154] In some embodiments, the terminal adjusting the value of TA includes the terminal adjusting the value of TA according to TA acquisition indication information and / or other relevant information;

[0155] In some embodiments, the valid area may include multiple cells, and each of the multiple cells has a corresponding TA type, for example, cell 1 corresponds to type 1, cell 2 corresponds to type 3, etc. This is for exemplary purposes only.

[0156] In some embodiments, when the TA acquisition indication information includes a TA type identifier,

[0157] The terminal moves from a source cell to a target cell. If the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the terminal uses the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the terminal adjusts the TA value; or

[0158] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the terminal adjusts the TA value.

[0159] The terminal can measure the downlink reference signals of different cells, determine the downlink arrival time difference between cells based on the measurement results, and adjust the value of TA based on the downlink arrival time difference. For example, the network device configures two TA type identifiers, represented as type 1 and type 2, and predefines that cells with the same TA type identifier use the same TA. The predefined content can be defined in the protocol, or configured by the network device to the terminal, or pre-negotiated between the terminal and the network device, or decided by the terminal itself. The valid area pre-configured by the network device for the terminal includes cells 1 to 6. Type 1 is configured for cells 1, 4, 5, and 2, and type 2 is configured for cells 3 and 6. When the terminal moves from cell 1 to cell 2, the TA type identifier of cell 2 is the same as that of cell 1. The terminal uses the TA obtained by random access in cell 1 in cell 2. refWhen the terminal moves to cell 3, the TA type identifiers of cell 3 and cell 2 are different. The terminal measures the arrival time of the synchronization signal block (SSB) of cell 2 and the arrival time of the SSB of cell 3, calculates the arrival time difference δ1, and then calculates TA3 = TA for cell 3. ref +δ1. When the terminal moves to cell 6, the TA type identifiers of cell 6 and cell 3 are the same, and the terminal uses TA3 as the TA of cell 6.

[0160] In some embodiments, the terminal automatically adjusting the value of TA includes:

[0161] The terminal measures downlink reference signals of different cells and determines the downlink arrival time difference between the cells according to the measurement results;

[0162] The value of TA is adjusted according to the downlink arrival time difference.

[0163] In this way, the terminal can determine the TA by measuring the downlink reference signal, and can obtain the TA of different cells without frequently using the random access process, thereby reducing the power consumption of the terminal and ensuring the transmission of the positioning SRS reference signal.

[0164] In some embodiments, the terminal measures downlink reference signals of different cells, determines the downlink arrival time difference between the cells based on the measurement results, and adjusts the value of TA based on the downlink arrival time difference, including:

[0165] The terminal moves from the source cell to the target cell, and measures the arrival time of the downlink reference signals of the source cell and the target cell to obtain the downlink arrival time difference between the cells; the value of the TA of the source cell is added to the downlink arrival time difference to obtain the value of the TA of the target cell.

[0166] For example, refer to TA ref It can be the TA obtained by the terminal in cell 1 after completing random access. The terminal measures the arrival time difference δ between the SSB of cell 1 and the SSB of the current cell. The TA of the current cell is TA ref +δ.

[0167] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells. If the network device pre-configures a valid area for the terminal including multiple cells, the TA acquisition indication information can be configured independently for each of the multiple cells, allowing different cells to flexibly acquire the TA; or it can be configured uniformly for multiple cells, saving configuration signaling overhead.

[0168] For example, the network device can be configured with two TA acquisition methods. Method 1 is to keep the TA value unchanged, and method 2 is for the terminal to adjust the TA value by itself. The effective area pre-configured by the network device for the terminal includes cells 1 to 6. Method 1 is configured for cells 4, 5 and 2, and method 2 is configured for cells 3 and 6. Cell 1 is the cell where the terminal completes random access. When the terminal moves from cell 1 to cell 2, the terminal determines that the TA of cell 2 is the same as that of cell 1, which is TA ref When the terminal moves to cell 3, it measures the arrival time of the SSB of cell 2 and the arrival time of the SSB of cell 3, calculates the arrival time difference δ1, and then calculates TA3 = TA of cell 3. ref +δ1. When the terminal moves to cell 4, the terminal determines that the TA of cell 4 is the same as that of cell 3. When the terminal moves to cell 5, the terminal determines that the TA of cell 5 is the same as that of cell 4. When the terminal moves to cell 6, the terminal measures the arrival time of the SSB of cell 5 and the arrival time of the SSB of cell 6, calculates the arrival time difference δ2, and then calculates TA6 = TA of cell 6. ref +δ1+δ2.

[0169] In some embodiments, when the TA acquisition indication information includes a manner in which the terminal determines a TA value, the method further includes:

[0170] Receive inter-cell synchronization information from a network device, and adjust the value of TA according to the inter-cell synchronization information.

[0171] When cells within the effective area cannot be perfectly synchronized, the TA value needs to be adjusted according to the inter-cell synchronization information to obtain an accurate TA. The inter-cell synchronization information may include the synchronization difference of each cell relative to the reference cell.

[0172] For example, the network device can be configured with two TA acquisition methods. Method 1 is to keep the TA value unchanged, and method 2 is for the terminal to adjust the TA value by itself. The effective area pre-configured by the network device for the terminal includes cells 1 to 6. Method 1 is configured for cells 4, 5, and 2, and method 2 is configured for cells 3 and 6. Cell 1 is the cell where the terminal completes random access. The synchronization difference between cell 3 and cell 2 is Δ 2，3 , the synchronization difference between cell 6 and cell 5 is Δ 5，6 When the terminal moves from cell 1 to cell 2, the terminal determines that the TA of cell 2 is the same as that of cell 1, which is TA ref When the terminal moves to cell 3, it measures the arrival time of the SSB of cell 2 and the arrival time of the SSB of cell 3, calculates the arrival time difference δ1, and then calculates TA3 = TA of cell 3. ref +δ1+Δ 2，3When the terminal moves to cell 4, the terminal determines that the TA of cell 4 is the same as that of cell 3. When the terminal moves to cell 5, the terminal determines that the TA of cell 5 is the same as that of cell 4. When the terminal moves to cell 6, the terminal measures the arrival time of the SSB of cell 5 and the arrival time of the SSB of cell 6, calculates the arrival time difference δ2, and then calculates TA6 = TA of cell 6. ref +δ1+Δ 2，3 +δ2+Δ 5，6 .

[0173] The present disclosure provides a method for determining a timing advance (TA), which is performed by a network device, as shown in FIG3 , and includes:

[0174] Step S201: Sending TA acquisition instruction information to the terminal, wherein the TA acquisition instruction information instructs the terminal to determine the TA in at least one of the following ways:

[0175] Keep the value of TA unchanged;

[0176] The value of TA is determined by using preset rules;

[0177] The terminal adjusts the value of TA;

[0178] The value of TA is 0.

[0179] In this embodiment, the terminal determines the TA based on the TA acquisition indication information, and can keep the value of TA unchanged, and / or use the TA value determined by a preset rule, and / or the terminal adjusts the TA value by itself, and / or the TA value is 0. In this way, when the terminal moves within a valid area composed of multiple cells, the terminal does not need to frequently enter the connected state (RRC_CONNECTED) to obtain the TA of the new cell, thereby saving the power consumption of the terminal. The valid area is an area composed of multiple cells, and the terminal can move within the valid area.

[0180] Among them, the preset rule may be: determining that the value of TA is the value of TA of a certain reference cell, for example, it may be the value of TA obtained for the cell in which the terminal completes random access; or, the preset rule may be: determining that the value of TA is the value of TA of a certain reference cell and the sum of the downlink arrival time difference between the current cell and the reference cell; or, the preset rule may be: determining that the value of TA is the value of TA of a certain reference cell and the sum of the inter-cell synchronization difference between the current cell and the reference cell.

[0181] The preset rules may be defined in the protocol, or configured by the network device to the terminal, or pre-negotiated between the terminal and the network device, or determined by the terminal itself, etc.

[0182] In some embodiments, the TA obtaining indication information includes:

[0183] The terminal determines the value of TA; or

[0184] TA type identifier;

[0185] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0186] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0187] In this embodiment, the network device can pre-configure the terminal to determine the TA value or the TA type identifier, so that when the terminal moves in multiple cells, it can determine the TA according to the pre-configured terminal determination TA value or the TA type identifier, and can obtain the TA of different cells without frequently using the random access process, thereby reducing the power consumption of the terminal and ensuring the transmission of the positioning SRS reference signal.

[0188] In some embodiments, the valid area may include multiple cells, and each of the multiple cells has a corresponding TA type, for example, cell 1 corresponds to type 1, cell 2 corresponds to type 3, etc. This is for exemplary purposes only.

[0189] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells. If the network device pre-configures a valid area for the terminal including multiple cells, the TA acquisition indication information can be configured independently for each of the multiple cells, allowing different cells to flexibly acquire the TA; or it can be configured uniformly for multiple cells, saving configuration signaling overhead.

[0190] For example, the network device can be configured with two TA acquisition methods. Method 1 is to keep the TA value unchanged, and method 2 is for the terminal to adjust the TA value by itself. The effective area pre-configured by the network device for the terminal includes cells 1 to 6. Method 1 is configured for cells 4, 5 and 2, and method 2 is configured for cells 3 and 6. Cell 1 is the cell where the terminal completes random access. When the terminal moves from cell 1 to cell 2, the terminal determines that the TA of cell 2 is the same as that of cell 1, which is TA ref When the terminal moves to cell 3, it measures the arrival time of the SSB of cell 2 and the arrival time of the SSB of cell 3, calculates the arrival time difference δ1, and then calculates TA3 = TA of cell 3. ref+δ1. When the terminal moves to cell 4, the terminal determines that the TA of cell 4 is the same as that of cell 3. When the terminal moves to cell 5, the terminal determines that the TA of cell 5 is the same as that of cell 4. When the terminal moves to cell 6, the terminal measures the arrival time of the SSB of cell 5 and the arrival time of the SSB of cell 6, calculates the arrival time difference δ2, and then calculates TA6 = TA of cell 6. ref +δ1+δ2.

[0191] In some embodiments, when the TA acquisition indication information includes a manner in which the terminal determines a TA value, the method further includes:

[0192] Sending inter-cell synchronization information to the terminal, instructing the terminal to adjust the value of TA according to the inter-cell synchronization information.

[0193] When cells within the effective area cannot be perfectly synchronized, the TA value needs to be adjusted according to the inter-cell synchronization information to obtain an accurate TA. The inter-cell synchronization information may include the synchronization difference of each cell relative to the reference cell.

[0194] For example, the network device can be configured with two TA acquisition methods. Method 1 is to keep the TA value unchanged, and method 2 is for the terminal to adjust the TA value by itself. The effective area pre-configured by the network device for the terminal includes cells 1 to 6. Method 1 is configured for cells 4, 5, and 2, and method 2 is configured for cells 3 and 6. Cell 1 is the cell where the terminal completes random access. The synchronization difference between cell 3 and cell 2 is Δ 2，3 , the synchronization difference between cell 6 and cell 5 is Δ 5，6 When the terminal moves from cell 1 to cell 2, the terminal determines that the TA of cell 2 is the same as that of cell 1, which is TA ref When the terminal moves to cell 3, it measures the arrival time of the SSB of cell 2 and the arrival time of the SSB of cell 3, calculates the arrival time difference δ1, and then calculates TA3 = TA of cell 3. ref +δ1+Δ 2，3 When the terminal moves to cell 4, the terminal determines that the TA of cell 4 is the same as that of cell 3. When the terminal moves to cell 5, the terminal determines that the TA of cell 5 is the same as that of cell 4. When the terminal moves to cell 6, the terminal measures the arrival time of the SSB of cell 5 and the arrival time of the SSB of cell 6, calculates the arrival time difference δ2, and then calculates TA6 = TA of cell 6. ref +δ1+Δ 2，3 +δ2+Δ 5，6 .

[0195] In some embodiments, when the TA acquisition indication information includes a TA type identifier,

[0196] The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to use the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to adjust the TA value; or

[0197] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA acquisition indication information instructs the terminal to adjust the TA value.

[0198] The terminal can measure the downlink reference signals of different cells, determine the downlink arrival time difference between cells based on the measurement results, and adjust the value of TA based on the downlink arrival time difference. For example, the network device configures two TA type identifiers, represented as type 1 and type 2, and predefines that cells with the same TA type identifier use the same TA. The predefined content can be defined in the protocol, or configured by the network device to the terminal, or pre-negotiated between the terminal and the network device, or decided by the terminal itself. The valid area pre-configured by the network device for the terminal includes cells 1 to 6. Type 1 is configured for cells 1, 4, 5, and 2, and type 2 is configured for cells 3 and 6. When the terminal moves from cell 1 to cell 2, the TA type identifier of cell 2 is the same as that of cell 1. The terminal uses the TA obtained by random access in cell 1 in cell 2. ref When the terminal moves to cell 3, the TA type identifiers of cell 3 and cell 2 are different. The terminal measures the arrival time of the SSB of cell 2 and the arrival time of the SSB of cell 3, calculates the arrival time difference δ1, and then calculates TA3 = TA for cell 3. ref +δ1. When the terminal moves to cell 6, the TA type identifiers of cell 6 and cell 3 are the same, and the terminal uses TA3 as the TA of cell 6.

[0199] The following takes a base station as an example of a network device, and further describes the TA determination method provided by the embodiment of the present disclosure in combination with the accompanying drawings and specific embodiments.

[0200] Example 1:

[0201] Assume that the effective area of ​​the network device configuration contains 12 cells (i.e., cell 1-cell 12), as shown in Figure 4. The terminal first moves into cell 1 and obtains the TA of cell 1 through random access. This TA is defined as the reference TA, denoted as TA refAfter that, the base station in cell 1 sends a radio resource control (RRC) release signaling to the terminal, and the terminal enters the RRC_INACTIVE state. The RRC release signaling includes the TA acquisition methods of multiple cells in the valid area pre-configured by the network device for the terminal. Assume that the network device is configured with two TA acquisition methods, method 1 indicates that the corresponding cell uses the reference TA, and TA ref The reference TA can be the TA obtained by the cell where the terminal completes random access (i.e., the TA of cell 1). Mode 2 indicates that the corresponding cell obtains the TA by the terminal self-adjustment. One way of terminal self-adjustment is that the terminal measures the arrival time difference between the SSB of the adjacent cell using mode 1 and the SSB of the current cell, and uses this time difference to adjust the TA of the current cell. For example, the arrival time difference is expressed as δ, and the TA of the current cell (assuming it is cell i) is expressed as TA i =TA ref +δ. A configuration method of a base station can be shown in Table 1:

[0202] Table 1

[0203] The terminal obtains the above configuration information through RRC_release signaling. When the terminal moves within the effective area and moves to a new cell, it determines the TA of the corresponding cell based on this configuration information. For example, when the terminal moves from cell 1 to cell 2, the terminal determines that the TA of cell 2 is the same as that of cell 1, which is TA ref When the terminal moves to cell 3, it measures the SSB of cell 2 to obtain the arrival time, and also measures the SSB of cell 3 to obtain the arrival time, calculates the arrival time difference δ, and then calculates the TA of this cell, TA3 = TA ref +δ. The terminal uses the determined TA to transmit the positioning SRS reference signal in the corresponding cell.

[0204] In addition, since the coverage of some cells is small, the network equipment can also be configured with three TA acquisition methods, with method three being TA = 0. Thus, when a cell is configured with method three, the TA value is set to 0 when the terminal moves to this cell.

[0205] Example 2:

[0206] In this embodiment, assuming that the cells within the effective area cannot be perfectly synchronized, for cells using mode 2, the network device needs to further indicate the synchronization difference between the cell and the adjacent cells. In this case, the base station configuration information will also configure the synchronization difference between the cell and one or more adjacent cells. As shown in Table 2:

[0207] Table 2

[0208] Among them, the synchronization difference Δ i，j Represents the synchronization difference between cell i and cell j. According to this configuration, when the terminal moves to cell 3, it measures the SSB of cell 2 to obtain the arrival time, and also measures the SSB of cell 3 to obtain the arrival time, calculates the arrival time difference δ, and compensates for the synchronization difference, and then calculates the TA of this cell, TA3 = TA ref +δ+Δ 2，3 .

[0209] Another implementation is that the base station configures the synchronization difference between each cell and the reference cell in the RRC_release signaling. For example, the reference cell is the cell corresponding to the reference TA, that is, cell 1. In this way, the configured synchronization difference information is shown in Table 3:

[0210] Table 3

[0211] The terminal can obtain the synchronization difference between any two cells based on the above synchronization difference information, and then compensate the synchronization difference for the TA obtained by using method 2 to obtain the correct TA value. The terminal uses the determined TA to transmit the positioning SRS reference signal in the corresponding cell.

[0212] Example 3:

[0213] Assume that the valid area contains 12 cells, as shown in Figure 4. The terminal first moves into cell 1 and obtains the TA of cell 1 through random access. Afterwards, the base station in cell 1 sends an RRC release signaling to the terminal, and the terminal enters the RRC_INACTIVE state. The RRC release signaling contains the TA type identifiers of multiple cells in the valid area pre-configured by the network device for the terminal. Assume that the network device configures two TA type identifiers, represented as type 1 and type 2, and predefines that cells with the same type identifier use the same TA. When the terminal moves from the original cell to the new cell, if the TA type identifier is the same, the terminal uses the same TA as the original cell; if the TA type identifier is different, the terminal obtains the TA by self-adjustment. One way for the terminal to adjust itself is that the terminal measures the arrival time difference between the SSB of the original cell and the SSB of the new cell, and uses this time difference to adjust the TA of the current cell. A configuration method of a base station can be shown in Table 4:

[0214] Table 4

[0215] When the terminal moves from cell 1 to cell 2, the terminal determines that the TA type of cell 2 is the same as that of cell 1, and the terminal uses the TA obtained through random access in cell 1 in cell 2. Further, when the terminal moves to cell 3, the TA type of cell 3 is different from that of cell 2. The terminal measures the SSB of cell 2 to obtain the arrival time, and also measures the SSB of cell 3 to obtain the arrival time, calculates the arrival time difference δ, and then calculates the TA of this cell, TA3 = TA ref +δ. When the terminal continues to move to cell 6, since it has the same TA type as cell 3, the terminal maintains TA3 as the TA of this cell. When the terminal moves to cell 7, since cell 7 has the same TA type as cell 1, cell 7 adopts cell 1's TA. And so on. The terminal uses the determined TA to transmit the positioning SRS reference signal in the corresponding cell.

[0216] Example 4:

[0217] This embodiment adopts the configuration at the effective area level, that is, the configured TA acquisition method is applicable to the entire effective area. Assume that the network equipment is configured with three TA acquisition methods, method 1 indicates that the new cell maintains the TA value of the original cell unchanged, method 2 indicates that the new cell adopts the terminal's self-adjustment method to obtain the TA, and method 3 indicates that the TA value of all cells is 0. The base station configures a TA acquisition method in the RRC_release signaling, and this method is used for all cells in the effective area. For example, if the base station configures TA acquisition method 1, when the terminal moves in the effective area, all cells use the TA obtained by random access of cell 1. For another example, if the RRC_release signaling of the base station configures TA acquisition method 2, then after the terminal arrives at the new cell, it will measure the arrival time difference of the SSB of the original cell and the new cell to obtain the TA of the new cell. The terminal uses the determined TA to transmit the positioning SRS reference signal in the corresponding cell.

[0218] To address the above technical issues, on the network device side, an embodiment of the present disclosure provides a timing advance (TA) determination apparatus, as shown in FIG5 , including a memory 1120 , a transceiver 1110 , and a processor 1100 :

[0219] The memory 1120 is configured to store computer programs. The transceiver 1110 is configured to transmit and receive data under the control of the processor 1100. The processor 1100 is configured to read the computer program in the memory 1120 and perform the following operations:

[0220] Sending TA acquisition indication information to the terminal, where the TA acquisition indication information instructs the terminal to determine the TA in at least one of the following ways:

[0221] Keep the value of TA unchanged;

[0222] The value of TA is determined by using preset rules;

[0223] The terminal adjusts the value of TA;

[0224] The value of TA is 0.

[0225] In some embodiments, the TA obtaining indication information includes:

[0226] The terminal determines the value of TA; or

[0227] TA type identifier;

[0228] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0229] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0230] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells.

[0231] In some embodiments, when the TA acquisition indication information includes a manner in which the terminal determines a TA value, the processor 1100 is configured to read the computer program in the memory 1120 and perform the following operations:

[0232] Sending inter-cell synchronization information to the terminal, instructing the terminal to adjust the value of TA according to the inter-cell synchronization information.

[0233] In some embodiments, the inter-cell synchronization information includes a synchronization difference of each cell relative to a reference cell.

[0234] In some embodiments, when the TA acquisition indication information includes a TA type identifier,

[0235] The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to use the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to adjust the TA value; or

[0236] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA acquisition indication information instructs the terminal to adjust the TA value.

[0237] The transceiver 1110 is used to receive and send data under the control of the processor 1100.

[0238] In FIG5 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits connected by one or more processors represented by the processor 1100 and the memory represented by the memory 1120. The bus architecture may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not described further herein. The bus interface provides an interface. The transceiver 1110 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 when performing operations.

[0239] The processor 1100 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0240] On the terminal side, an embodiment of the present disclosure provides a timing advance TA determination device, as shown in FIG6 , including a memory 1320 , a transceiver 1310 , and a processor 1300 :

[0241] The memory 1320 is used to store computer programs; the transceiver 1310 is used to send and receive data under the control of the processor 1300; the processor 1300 is used to read the computer program in the memory 1320 and perform the following operations:

[0242] Receiving TA acquisition indication information of the network device;

[0243] The value of TA is determined according to the TA acquisition indication information using at least one of the following methods:

[0244] Keep the value of TA unchanged;

[0245] The value of TA is determined by using preset rules;

[0246] The terminal adjusts the value of TA;

[0247] The value of TA is 0.

[0248] In some embodiments, the TA obtaining indication information includes:

[0249] The terminal determines the value of TA; or

[0250] TA type identifier;

[0251] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0252] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0253] In some embodiments, when the TA acquisition indication information includes a TA type identifier, the processor 1300 is configured to read the computer program in the memory 1320 and perform the following operations:

[0254] The terminal moves from a source cell to a target cell. If the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the terminal uses the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the terminal adjusts the value of the TA; or

[0255] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA value is adjusted.

[0256] In some embodiments, the processor 1300 is configured to read the computer program in the memory 1320 and perform the following operations:

[0257] Measure the downlink reference signals of different cells and determine the downlink arrival time difference between cells based on the measurement results;

[0258] The value of TA is adjusted according to the downlink arrival time difference.

[0259] In some embodiments, the processor 1300 is configured to read the computer program in the memory 1320 and perform the following operations:

[0260] The terminal moves from the source cell to the target cell, measures the arrival time of the downlink reference signals of the source cell and the target cell, and obtains the downlink arrival time difference between the cells; and adds the TA value of the source cell to the downlink arrival time difference to obtain the TA value of the target cell.

[0261] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells.

[0262] In some embodiments, when the TA acquisition indication information includes a manner in which the terminal determines a TA value, the processor 1300 is configured to read the computer program in the memory 1320 and perform the following operations:

[0263] Receive inter-cell synchronization information from a network device, and adjust the value of TA according to the inter-cell synchronization information.

[0264] In some embodiments, the inter-cell synchronization information includes a synchronization difference of each cell relative to a reference cell.

[0265] The transceiver 1310 is configured to receive and send data under the control of the processor 1300 .

[0266] In FIG6 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits connected together by one or more processors represented by processor 1300 and memory represented by memory 1320. The bus architecture may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1310 may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface may also be an interface capable of connecting external or internal devices as required, and the connected devices may include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0267] The processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1320 can store data used by the processor 1300 when performing operations.

[0268] In some embodiments, the processor 1300 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0269] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0270] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0271] An embodiment of the present disclosure provides a timing advance (TA) determination device, as shown in FIG7 , including:

[0272] The receiving unit 410 is configured to receive TA acquisition indication information from a network device;

[0273] The determining unit 430 is configured to determine a value of the TA according to the TA acquisition indication information by using at least one of the following methods:

[0274] Keep the value of TA unchanged;

[0275] The value of TA is determined by using preset rules;

[0276] The terminal adjusts the value of TA;

[0277] The value of TA is 0.

[0278] In some embodiments, the TA obtaining indication information includes:

[0279] The terminal determines the value of TA; or

[0280] TA type identifier;

[0281] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0282] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0283] In some embodiments, when the TA acquisition indication information includes a TA type identifier,

[0284] The terminal moves from a source cell to a target cell. If the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the terminal uses the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the determining unit 430 adjusts the value of the TA; or

[0285] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the determination unit 430 adjusts the TA value.

[0286] In some embodiments, the determining unit 430 is specifically configured to: measure downlink reference signals of different cells, determine the downlink arrival time difference between the cells according to the measurement results; and adjust the value of TA according to the downlink arrival time difference.

[0287] In some embodiments, the terminal moves from a source cell to a target cell, and the determination unit 430 is specifically used to: measure the arrival time of the downlink reference signals of the source cell and the target cell to obtain the downlink arrival time difference between the cells; and add the value of the TA of the source cell to the downlink arrival time difference to obtain the value of the TA of the target cell.

[0288] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells.

[0289] In some embodiments, when the TA acquisition indication information includes a method for the terminal to determine the value of TA, the receiving unit 410 is further used to: receive inter-cell synchronization information of a network device, and adjust the value of TA according to the inter-cell synchronization information.

[0290] In some embodiments, the inter-cell synchronization information includes a synchronization difference of each cell relative to a reference cell.

[0291] An embodiment of the present disclosure provides a timing advance (TA) determination device, as shown in FIG8 , including:

[0292] The sending unit 420 is configured to send TA acquisition indication information to the terminal, where the TA acquisition indication information instructs the terminal to determine the TA in at least one of the following ways:

[0293] Keep the value of TA unchanged;

[0294] The value of TA is determined by using preset rules;

[0295] The terminal adjusts the value of TA;

[0296] The value of TA is 0.

[0297] In some embodiments, the TA obtaining indication information includes:

[0298] The terminal determines the value of TA; or

[0299] TA type identifier;

[0300] The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0;

[0301] The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

[0302] In some embodiments, the TA acquisition indication information is configured independently for each cell; or, the TA acquisition indication information is configured for multiple cells.

[0303] In some embodiments, when the TA acquisition indication information includes a method for the terminal to determine the value of TA, the sending unit 420 is further used to: send inter-cell synchronization information to the terminal, instructing the terminal to adjust the value of TA according to the inter-cell synchronization information.

[0304] In some embodiments, the inter-cell synchronization information includes a synchronization difference of each cell relative to a reference cell.

[0305] In some embodiments, when the TA acquisition indication information includes a TA type identifier,

[0306] The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to use the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to adjust the TA value; or

[0307] The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA acquisition indication information instructs the terminal to adjust the TA value.

[0308] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0309] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0310] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0311] An embodiment of the present disclosure provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor-readable storage medium to execute the above-mentioned TA determination method.

[0312] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), etc.), optical storage (such as compact disk (CD), digital video disc (DVD), Blu-ray disc (BD), high-definition versatile disc (HVD), etc.), and semiconductor memory (such as read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0313] Among them, the implementation embodiments of the above-mentioned TA determination method are all applicable to the embodiments of the processor-readable storage medium and can achieve the same technical effects.

[0314] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0315] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0316] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0317] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0318] It should be noted that it should be understood that the division of the above modules is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, these modules can all be implemented in the form of software called by a processing element; or they can all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. For example, the determination module can be a separately established processing element, or it can be integrated into a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called by a processing element of the above-mentioned device to perform the functions of the above-mentioned determination module. The implementation of other modules is similar. In addition, these modules can all or partly be integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed by the hardware integrated logic circuit in the processor element or by instructions in the form of software.

[0319] For example, each module, unit, sub-unit, or sub-module may be one or more integrated circuits configured to implement the above method, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented by scheduling program code on a processing element, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0320] The terms "first," "second," and the like in the specification and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure described herein may be implemented in a sequence other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units need not be limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or devices. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, for example, A and / or B and / or C, means that seven situations are included: A alone, B alone, C alone, both A and B present, both B and C present, both A and C present, and all A, B, and C present. Similarly, the use of "at least one of A and B" in the specification and claims should be understood to mean "A alone, B alone, or both A and B present."

[0321] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A method for determining a timing advance (TA), performed by a terminal, comprising: Receiving TA acquisition indication information of the network device; The value of TA is determined according to the TA acquisition indication information using at least one of the following methods: Keep the value of TA unchanged; The value of TA is determined by using preset rules; The terminal adjusts the value of TA; The value of TA is 0.

2. The TA determination method according to claim 1, wherein: The TA acquisition instruction information includes: The terminal determines the value of TA; or TA type identifier; The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0; The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

3. The TA determination method according to claim 2, wherein: In the case where the TA acquisition indication information includes a TA type identifier, The terminal moves from a source cell to a target cell. If the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the terminal uses the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the terminal adjusts the TA value; or The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the terminal adjusts the TA value.

4. The TA determination method according to claim 1, 2 or 3, wherein: The value of adjusting TA includes: The terminal measures downlink reference signals of different cells and determines the downlink arrival time difference between the cells according to the measurement results; The value of TA is adjusted according to the downlink arrival time difference.

5. The TA determination method according to claim 4, wherein: The terminal measures downlink reference signals of different cells, determines a downlink arrival time difference between the cells according to the measurement result, and adjusts a value of TA according to the downlink arrival time difference, including: The terminal moves from the source cell to the target cell, and measures the arrival time of the downlink reference signals of the source cell and the target cell to obtain the downlink arrival time difference between the cells; the value of the TA of the source cell is added to the downlink arrival time difference to obtain the value of the TA of the target cell.

6. The TA determination method according to claim 1 or 2, wherein: The TA acquisition indication information is independently configured for each cell; or, the TA acquisition indication information is configured for multiple cells.

7. The TA determination method according to claim 2, wherein: In a case where the TA acquisition indication information includes a manner in which the terminal determines a value of the TA, the method further includes: Receive inter-cell synchronization information from a network device, and adjust the value of TA according to the inter-cell synchronization information.

8. The TA determination method according to claim 7, wherein: The inter-cell synchronization information includes a synchronization difference between each cell and a reference cell.

9. A method for determining a timing advance (TA), performed by a network device, the method comprising: Sending TA acquisition indication information to the terminal, where the TA acquisition indication information instructs the terminal to determine the TA in at least one of the following ways: Keep the value of TA unchanged; The value of TA is determined by using preset rules; The terminal adjusts the value of TA; The value of TA is 0.

10. The TA determination method according to claim 9, wherein: The TA acquisition instruction information includes: The terminal determines the value of TA; or TA type identifier; The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0; The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

11. The TA determination method according to claim 9 or 10, wherein: The TA acquisition indication information is independently configured for each cell; or, the TA acquisition indication information is configured for multiple cells.

12. The TA determination method according to claim 10, wherein: In a case where the TA acquisition indication information includes a manner in which the terminal determines a value of the TA, the method further includes: Sending inter-cell synchronization information to the terminal, instructing the terminal to adjust the value of TA according to the inter-cell synchronization information.

13. The TA determination method according to claim 12, wherein: The inter-cell synchronization information includes a synchronization difference between each cell and a reference cell.

14. The TA determination method according to claim 10, wherein: In the case where the TA acquisition indication information includes a TA type identifier, The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to use the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to adjust the TA value; or The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA acquisition indication information instructs the terminal to adjust the TA value.

15. A timing advance (TA) determination device, comprising a memory, a transceiver, and a processor: memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Receiving TA acquisition indication information of the network device; The value of TA is determined according to the TA acquisition indication information using at least one of the following methods: Keep the value of TA unchanged; The value of TA is determined by using preset rules; The terminal adjusts the value of TA; The value of TA is 0.

16. The TA determination device according to claim 15, wherein: The TA acquisition instruction information includes: The terminal determines the value of TA; or TA type identifier; The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0; The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

17. The TA determination device according to claim 16, wherein: In a case where the TA acquisition indication information includes a TA type identifier, the processor is configured to read the computer program in the memory and perform the following operations: The terminal moves from a source cell to a target cell. If the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the terminal uses the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the terminal adjusts the value of the TA; or The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA value is adjusted.

18. The TA determination device according to claim 15, 16 or 17, wherein: The processor is configured to read the computer program in the memory and perform the following operations: Measure the downlink reference signals of different cells and determine the downlink arrival time difference between cells based on the measurement results; The value of TA is adjusted according to the downlink arrival time difference.

19. The TA determination device according to claim 18, wherein: The processor is configured to read the computer program in the memory and perform the following operations: The terminal moves from the source cell to the target cell, measures the arrival time of the downlink reference signals of the source cell and the target cell, and obtains the downlink arrival time difference between the cells; and adds the TA value of the source cell to the downlink arrival time difference to obtain the TA value of the target cell.

20. The TA determination device according to claim 15 or 16, wherein: The TA acquisition indication information is independently configured for each cell; or, the TA acquisition indication information is configured for multiple cells.

21. The TA determination device according to claim 16, wherein: In a case where the TA acquisition indication information includes a manner in which the terminal determines a value of the TA, the processor is further configured to read a computer program in the memory and perform the following operations: Receive inter-cell synchronization information from a network device, and adjust the value of TA according to the inter-cell synchronization information.

22. The TA determination device according to claim 21, wherein: The inter-cell synchronization information includes a synchronization difference between each cell and a reference cell.

23. A timing advance (TA) determination device, comprising a memory, a transceiver, and a processor: A memory for storing computer programs; a transceiver for transmitting and receiving data under the control of the processor. data; and a processor configured to read the computer program in the memory and perform the following operations: Sending TA acquisition indication information to the terminal, where the TA acquisition indication information instructs the terminal to determine the TA in at least one of the following ways: Keep the value of TA unchanged; The value of TA is determined by using preset rules; The terminal adjusts the value of TA; The value of TA is 0.

24. The TA determination device according to claim 23, wherein: The TA acquisition instruction information includes: The terminal determines the value of TA; or TA type identifier; The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0; The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

25. The TA determination device according to claim 23 or 24, wherein: The TA acquisition indication information is independently configured for each cell; or, the TA acquisition indication information is configured for multiple cells.

26. The TA determination device according to claim 25, wherein: In a case where the TA acquisition indication information includes a manner in which the terminal determines a value of the TA, the processor is configured to read the computer program in the memory and perform the following operations: Sending inter-cell synchronization information to the terminal, instructing the terminal to adjust the value of TA according to the inter-cell synchronization information.

27. The TA determination device according to claim 26, wherein: The inter-cell synchronization information includes a synchronization difference between each cell and a reference cell.

28. The TA determination device according to claim 24, wherein: In the case where the TA acquisition indication information includes a TA type identifier, The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to use the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to adjust the TA value; or The terminal moves from the source cell to the target cell, and the target cell uses the same The value of TA, the first cell is a cell having the same TA type identifier as the target cell. If the value of TA of the first cell is unknown, the TA acquisition indication information instructs the terminal to adjust the value of TA.

29. A timing advance (TA) determination device, comprising: A receiving unit, configured to receive TA acquisition instruction information from a network device; A determining unit is configured to determine a value of the TA according to the TA acquisition indication information by using at least one of the following methods: Keep the value of TA unchanged; The value of TA is determined by using preset rules; The terminal adjusts the value of TA; The value of TA is 0.

30. The TA determination device according to claim 29, wherein: The TA acquisition instruction information includes: The terminal determines the value of TA; or TA type identifier; The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0; The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

31. The TA determination device according to claim 30, wherein: In the case where the TA acquisition indication information includes a TA type identifier, The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the terminal uses the same TA as the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the determining unit adjusts the value of the TA; or The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the determination unit adjusts the TA value.

32. The TA determination device according to claim 29, 30 or 31, wherein: The determining unit is specifically configured to: Measure the downlink reference signals of different cells and determine the downlink arrival time between cells based on the measurement results Difference; The value of TA is adjusted according to the downlink arrival time difference.

33. The TA determination device according to claim 32, wherein: The terminal moves from the source cell to the target cell, and the determination unit is specifically used to: measure the arrival time of the downlink reference signals of the source cell and the target cell to obtain the downlink arrival time difference between the cells; add the TA value of the source cell to the downlink arrival time difference to obtain the TA value of the target cell.

34. The TA determination device according to claim 29 or 30, wherein: The TA acquisition indication information is independently configured for each cell; or, the TA acquisition indication information is configured for multiple cells.

35. The TA determination device according to claim 30, wherein: In a case where the TA acquisition indication information includes a manner in which the terminal determines a value of the TA, the receiving unit is further configured to: Receive inter-cell synchronization information from a network device, and adjust the value of TA according to the inter-cell synchronization information.

36. The TA determination device according to claim 35, wherein: The inter-cell synchronization information includes a synchronization difference between each cell and a reference cell.

37. A timing advance (TA) determination device, comprising: A sending unit is configured to send TA acquisition indication information to the terminal, where the TA acquisition indication information instructs the terminal to determine the TA in at least one of the following ways: Keep the value of TA unchanged; The value of TA is determined by using preset rules; The terminal adjusts the value of TA; The value of TA is 0.

38. The TA determination device according to claim 37, wherein: The TA acquisition instruction information includes: The terminal determines the value of TA; or TA type identifier; The manner in which the terminal determines the value of TA indicates at least one of the following: keeping the value of TA unchanged, adjusting the value of TA by the terminal, and setting the value of TA to 0; The TA type identifier indicates the TA type corresponding to the cell within the valid area where the terminal is located.

39. The TA determination apparatus according to claim 37 or 38, wherein: The TA acquisition indication information is independently configured for each cell; or, the TA acquisition indication information is configured for multiple cells.

40. The TA determination device according to claim 39, wherein: In a case where the TA acquisition indication information includes a manner in which the terminal determines a value of the TA, the sending unit is further configured to: Sending inter-cell synchronization information to the terminal, instructing the terminal to adjust the value of TA according to the inter-cell synchronization information.

41. The TA determination device according to claim 40, wherein: The inter-cell synchronization information includes a synchronization difference between each cell and a reference cell.

42. The TA determination apparatus according to claim 38, wherein: In the case where the TA acquisition indication information includes a TA type identifier, The terminal moves from a source cell to a target cell, and if the TA type identifier of the source cell is the same as the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to use the same TA as that of the source cell; if the TA type identifier of the source cell is different from the TA type identifier of the target cell, the TA acquisition indication information instructs the terminal to adjust the TA value; or The terminal moves from a source cell to a target cell, and the target cell uses the same TA value as the first cell. The first cell is a cell having the same TA type identifier as the target cell. If the TA value of the first cell is unknown, the TA acquisition indication information instructs the terminal to adjust the TA value.

43. A processor-readable storage medium storing a computer program, wherein the computer program is configured to cause the processor-readable storage medium to execute the method according to any one of claims 1 to 8.

44. A processor-readable storage medium storing a computer program, wherein the computer program is configured to cause the processor-readable storage medium to execute the method according to any one of claims 9 to 14.

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