Cell conversion method and device, terminal, network equipment and storage medium

Abstract

The invention discloses a cell conversion method and device, a terminal, network equipment and a storage medium, and the method comprises the steps that the terminal carries out cell conversion, and / or receives first information sent by the network equipment; wherein the cell switching time at least comprises interruption time; the first information comprises at least one of the following information: indication information that the terminal preferentially performs service cell synchronization, indication information that the terminal preferentially performs TCI state activation of a neighbor cell, and a cell conversion command.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a cell conversion method, apparatus, terminal, network device, and storage medium. Background Art

[0002] In related technologies, the mobility based on layer one (L1) measurement brings about the activation of the transmission configuration indicator (TCI) state of the neighboring cell, resulting in the inability to meet the transmission timing requirements for both the uplink transmission in the current serving cell and the uplink transmission in the target handover cell, and the system performance is poor. Summary of the Invention

[0003] To solve the related technical problems, embodiments of this application provide a cell conversion method, apparatus, terminal, network device, and storage medium.

[0004] The technical solution of the embodiments of this application is implemented as follows:

[0005] Embodiments of this application provide a cell conversion method applied to a terminal. The method includes at least one of the following:

[0006] Perform cell conversion, and the cell conversion time includes at least an interruption time;

[0007] Receive first information sent by a network device; wherein, the first information includes at least one of the following:

[0008] An indication information for the terminal to preferentially perform serving cell synchronization;

[0009] An indication information for the terminal to preferentially activate the TCI state of the neighboring cell;

[0010] A cell conversion command.

[0011] In the above solution, the method further includes:

[0012] When the first information indicates that the terminal preferentially performs serving cell synchronization, preferentially receive the synchronization signal block (SSB) of the serving cell.

[0013] In the above solution, the method further includes at least one of the following:

[0014] When the first information indicates that the terminal preferentially activates the TCI state of the neighboring cell, preferentially receive the SSB of the neighboring cell;

[0015] When switching to a neighboring cell, send data according to the transmission time index of the corresponding neighboring cell.

[0016] In the above solution, the transmission time error of the first transmission in the target cell is less than or equal to the first threshold; and / or

[0017] After receiving the cell change command, the transmission in the target cell meets the transmission time error requirement.

[0018] In the above solution, when at least one of the following conditions is met, the transmission time error of the first transmission in the target cell is less than or equal to the first threshold:

[0019] There is at least one SSB in the first time;

[0020] The measurement time of the L1 - Reference Signal Receiving Power (RSRP) does not exceed 160 milliseconds.

[0021] In the above solution, the method further includes one of the following:

[0022] When the period of the SSB in the serving cell is less than the set duration and the reception of the SSB in the serving cell is completed, receive the SSB of the neighboring cell;

[0023] When the sum of the period of the SSB in the serving cell and the period of the SSB in the neighboring cell is less than or equal to the set duration and the reception of the SSB in the serving cell is completed, receive the SSB of the neighboring cell;

[0024] When the period of the SSB in the serving cell is equal to the set duration, do not receive the SSB of the neighboring cell.

[0025] In the above solution, the method further includes one of the following:

[0026] When the period of the SSB in the neighboring cell is less than the set duration and the reception of the SSB in the neighboring cell is completed, receive the SSB of the serving cell;

[0027] When the sum of the period of the SSB in the neighboring cell and the period of the SSB in the serving cell is less than or equal to the set duration and the reception of the SSB in the neighboring cell is completed, receive the SSB of the serving cell;

[0028] When the period of the SSB in the neighboring cell is equal to the set duration, do not receive the SSB of the serving cell.

[0029] In the above solution, the method further includes:

[0030] Receive the second information sent by the network device; wherein,

[0031] The second information indicates the priority of the first neighbor cell or multiple second neighbor cells; the first neighbor cell represents the neighbor cell for which TCI state activation is preferentially performed; the second neighbor cell represents the neighbor cell for which TCI state activation is required.

[0032] In the above solution, the method further includes:

[0033] According to the second information, preferentially receive the SSB of the first neighbor cell or the second neighbor cell with a high priority.

[0034] In the above solution, the method further includes:

[0035] Receive the third information sent by the network device, where

[0036] The third information indicates at least one of the following:

[0037] Whether to relax the transmission time metric;

[0038] The relaxation ratio of the transmission time metric, and the relaxation ratio of the transmission time metric is determined according to the number of cells and / or the period of the SSB;

[0039] The identifier / index of the cell for which the transmission time metric is relaxed.

[0040] In the above solution, the method further includes:

[0041] Receive the fourth information sent by the network device; where the fourth information indicates that the terminal relaxes the transmission time metric of the serving cell or relaxes the transmission time metric of the neighbor cell.

[0042] In the above solution, the method further includes:

[0043] When the period of the SSB of the serving cell is equal to the set duration, or the period of the SSB of each cell is the set duration, relax the transmission time metric of the serving cell.

[0044] In the above solution, the interruption time at least includes at least one of the validity check time of the radio resource control (RRC) configuration, the terminal processing time, the time to obtain time information, the SSB processing time, and the interruption uncertainty. In the above solution, the interruption time at least includes the SSB processing time. When at least one of the following conditions is satisfied, the value of the SSB processing time is 0:

[0045] The target TCI state is in the candidate cell activation TCI state list;

[0046] The target TCI state is in the serving cell activation TCI state list;

[0047] The L1-RSRP measurement time does not exceed 160 milliseconds;

[0048] The time between receiving a Media Access Control (MAC) Control Element (CE) and an L1 / L2-Triggered Mobility (LTM) cell change command is equal to or greater than a second threshold, where the MAC CE is the MAC CE that activates the target TCI state.

[0049] In the above solution, the interruption time at least includes the time for obtaining time information, and when at least one of the following conditions is met, the value of the time for obtaining time information is 0:

[0050] The target TCI state is in the candidate cell activation TCI state list;

[0051] The target TCI state is in the serving cell activation TCI state list;

[0052] The L1-RSRP measurement time does not exceed 160 milliseconds;

[0053] The time between receiving the MAC CE and the LTM cell change command is equal to or greater than a second threshold, where the MAC CE is the MAC CE that activates the target TCI state.

[0054] In the above solution, the second threshold at least includes the Hybrid Automatic Repeat Request (HARQ) time and the time from when the MAC CE command is decoded to the transmission of the first SSB.

[0055] An embodiment of the present application further provides a cell change method applied to a network device, and the method includes:

[0056] Sending first information to a terminal; wherein, the first information includes at least one of the following:

[0057] Indication information for the terminal to preferentially perform serving cell synchronization;

[0058] Indication information for preferentially activating the TCI state of a neighboring cell;

[0059] A cell change command.

[0060] In the above solution, the method further includes:

[0061] Sending second information to the terminal; wherein,

[0062] The second information indicates the priority of the first neighbor cell or multiple second neighbor cells; the first neighbor cell represents the neighbor cell for which TCI state activation is preferentially performed; the second neighbor cell represents the neighbor cell for which TCI state activation is required.

[0063] In the above solution, the method further includes:

[0064] Determine the priority of the second neighbor cell according to at least one of the following:

[0065] The layer 3 (L3, Layer3) measurement result of the second neighbor cell;

[0066] The load of the second neighbor cell;

[0067] The capacity of the second neighbor cell;

[0068] The second neighbor cell for which it is desired that the terminal perform an L1 handover;

[0069] The cell type of the second neighbor cell, where the cell type is a co-frequency cell or an inter-frequency cell.

[0070] In the above solution, the method further includes:

[0071] Send third information to the terminal, where

[0072] The third information indicates at least one of the following:

[0073] Whether to relax the transmission time metric;

[0074] The relaxation ratio of the transmission time metric, where the relaxation ratio of the transmission time metric is determined according to the number of cells and / or the period of the SSB;

[0075] The identifier / index of the cell for which the transmission time metric is relaxed.

[0076] In the above solution, the method further includes:

[0077] Send fourth information to the terminal; where the fourth information indicates that the terminal relaxes the transmission time metric for the serving cell or relaxes the transmission time for the neighbor cell.

[0078] An embodiment of the present application further provides a cell conversion device, including:

[0079] A processing unit, configured to perform cell conversion, and the cell conversion time includes at least an interruption time; and / or

[0080] A first receiving unit, configured to receive first information sent by a network device; where the first information includes at least one of the following:

[0081] An indication information for the terminal to preferentially synchronize with the serving cell;

[0082] The indication information for the terminal to preferentially activate the TCI state of neighboring cells;

[0083] Cell conversion command.

[0084] The embodiments of the present application further provide a cell conversion device, including:

[0085] A first sending unit, configured to send first information to a terminal; wherein, the first information includes at least one of the following:

[0086] The indication information for the terminal to preferentially synchronize with the serving cell;

[0087] The indication information for preferentially activating the TCI state of neighboring cells;

[0088] Cell conversion command.

[0089] The embodiments of the present application further provide a terminal, including: a first processor and a first communication interface; wherein,

[0090] The first processor is configured to perform cell conversion, and the cell conversion time includes at least an interruption time;

[0091] The first communication interface is configured to receive the first information sent by a network device; wherein, the first information includes at least one of the following:

[0092] The indication information for the terminal to preferentially synchronize with the serving cell;

[0093] The indication information for the terminal to preferentially activate the TCI state of neighboring cells;

[0094] Cell conversion command.

[0095] The embodiments of the present application further provide a network device, including: a second processor and a second communication interface; wherein,

[0096] The second communication interface is configured to send the first information to a terminal; wherein, the first information includes at least one of the following:

[0097] The indication information for the terminal to preferentially synchronize with the serving cell;

[0098] The indication information for preferentially activating the TCI state of neighboring cells;

[0099] Cell conversion command.

[0100] The embodiments of the present application further provide a terminal, including a first processor and a first memory for storing a computer program that can run on the first processor,

[0101] Wherein, when the first processor is used to run the computer program, it executes the steps of any one of the methods on the terminal side described above.

[0102] An embodiment of the present application further provides a network device, including a second processor and a second memory for storing a computer program that can run on the second processor.

[0103] Wherein, when the second processor is used to run the computer program, it executes the steps of any one of the methods on the network device side described above.

[0104] An embodiment of the present application further provides a storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps of any one of the methods on the terminal side, or implements the steps of any one of the methods on the network device side.

[0105] In the cell conversion method, device, terminal, network device, and storage medium provided in the embodiments of the present application, the network device sends first information to the terminal; the terminal receives the first information sent by the network device, and / or performs cell conversion. Among them, the cell conversion time at least includes an interruption time, and the first information includes at least one of the following: indication information for the terminal to preferentially perform serving cell synchronization, indication information for the terminal to preferentially activate the TCI state of a neighboring cell, and a cell conversion command. It can be seen that in the embodiments of the present application, the network device can indicate to the terminal to preferentially perform serving cell synchronization or preferentially activate the TCI state of a neighboring cell through the first information. In this way, even when the uplink transmission of the serving cell and the uplink transmission of the target cell both cannot meet the timing requirements, it can at least ensure that the transmission of the terminal in the serving cell meets the transmission timing requirements, or at least ensure that the transmission of the terminal in the target cell meets the transmission timing requirements, reducing the system performance loss to improve the system performance. Description of the Drawings

[0106] Figure 1 It is a schematic flowchart of a cell conversion method according to an embodiment of the present application;

[0107] Figure 2 It is a schematic flowchart of a cell conversion method according to an embodiment of the present application;

[0108] Figure 3 It is a schematic structural diagram of a cell conversion device according to an embodiment of the present application;

[0109] Figure 4 It is a schematic structural diagram of a cell conversion device according to an embodiment of the present application;

[0110] Figure 5 It is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0111] Figure 6This is a schematic structural diagram of a network device according to an embodiment of the present application. Detailed implementation manners

[0112] In the related art, mobility operations usually first perform a handover to a target cell based on the L3 measurement results reported by a terminal, and then configure the TCI state through an RRC reconfiguration message based on the L1 measurement reporting results in the target cell to enable the terminal to select an appropriate downlink beam for data reception. The above L1 measurement is only performed in the serving cell, and the terminal does not need to perform L1 measurement on neighboring cells; the L1 measurement can be an L1-RSRP measurement or an L1-signal-to-interference-plus-noise ratio (SINR) measurement.

[0113] To reduce the latency and signaling overhead caused by handovers, one research direction is to carry out L1-based inter-cell mobility. L1-based inter-cell mobility can be understood as a bottom-layer-based cell handover or a beam handover to a neighboring cell that is not perceived by the upper layer. This mechanism requires the terminal to perform L1 measurement and reporting on neighboring cells (non-serving cells). Specifically, in order to reduce the handover latency of L1-triggered mobility, the terminal needs to activate the TCI state of neighboring cells (the network may configure the terminal to activate the TCI state of one or more neighboring cells). Activating the TCI state requires the terminal to maintain time / frequency tracking synchronization to prepare for subsequent L1-based handovers, such as ensuring that the subsequent uplink transmission in the target cell meets the transmission timing accuracy requirements. To ensure the time / frequency tracking performance and the transmission performance of subsequent L1-based handovers, the related art stipulates that at least one SSB is received (or described as measured) by the terminal within 160 milliseconds (ms).

[0114] Due to the limited processing capacity of the terminal, when the terminal performs measurements in the millimeter-wave frequency band range FR2 (Frequency range 2), it can only measure one beam direction at a time. For the measurement of multiple cells with different incoming wave directions, the terminal can only be achieved through time-domain polling. The period of the SSB is {5, 10, 20, 40, 80, 160} milliseconds. As mentioned above, the network device may configure the terminal to activate the TCI state of one or more neighboring cells, and the terminal also needs to maintain synchronization with the current serving cell. If the periods of the SSBs of the serving cell and neighboring cells are both relatively large (for example, both are 160 ms), then the terminal cannot complete the reception of the SSBs of multiple cells within 160 ms, that is, it cannot ensure the time / frequency tracking performance and the transmission performance of subsequent L1-based handovers, reducing the system performance.

[0115] In summary, the main problems existing in the related technologies are as follows: The mobility based on L1 measurement brings about the activation of the TCI state of the neighboring cell, resulting in that the uplink transmission in the current serving cell and the uplink transmission in the target handover cell both cannot meet the transmission timing requirements, reducing the system performance and leading to poor system performance.

[0116] Based on this, in various embodiments of the present application, a network device sends first information to a terminal; the terminal receives the first information sent by the network device, and / or performs cell conversion. Wherein, the cell conversion time at least includes an interruption time, and the first information includes at least one of the following: an indication information for the terminal to preferentially perform serving cell synchronization, an indication information for the terminal to preferentially perform activation of the TCI state of the neighboring cell, and a cell conversion command. It can be seen that in the embodiments of the present application, the network device can indicate, through the first information, that the terminal preferentially performs serving cell synchronization or preferentially performs activation of the TCI state of the neighboring cell. In this way, even when the uplink transmissions in both the current serving cell and the target handover cell cannot meet the timing requirements, it can at least ensure that the transmission of the terminal in the current serving cell meets the transmission timing requirements, or at least ensure that the transmission of the terminal in the target handover cell meets the transmission timing requirements, reducing the system performance loss to improve the system performance.

[0117] The following further describes the present application in detail with reference to the accompanying drawings and embodiments.

[0118] An embodiment of the present application provides a cell conversion method, which is applied to a terminal. As Figure 1 shown, the method includes:

[0119] Step 101: Perform cell conversion; and / or

[0120] Receive the first information sent by the network device.

[0121] Wherein, the cell conversion time at least includes an interruption time; the first information includes at least one of the following:

[0122] Indication information for the terminal to preferentially perform serving cell synchronization;

[0123] Indication information for the terminal to preferentially perform activation of the TCI state of the neighboring cell;

[0124] Cell conversion command.

[0125] Here, the problem solved by this application is as follows: L1 / L2-triggered mobility (LTM) requires the activation of the TCI state of one or more neighboring cells (the activation of the TCI state requires at least time / frequency tracking of the target cell for synchronization). The neighboring cells with the TCI state activated are the candidate target cells for subsequent L1 handovers (i.e., the candidate cells for LTM), that is, the terminal needs to maintain synchronization with the current serving cell and neighboring cells. The prior art stipulates that the terminal needs to receive the SSB of a certain cell within 160 ms for synchronization. However, when the terminal performs FR2 (Frequency Range 2) measurements, it can only measure one beam direction at a time. For the measurement of multiple cells with different incoming wave directions, the terminal can only achieve this through time-domain polling. FR2 is the millimeter-wave frequency range. The SSB period is {5, 10, 20, 40, 80, 160} milliseconds, making it impossible for the terminal to receive the SSBs of multiple cells within 160 ms and thus unable to maintain synchronization. This results in the inability to meet the timing requirements for uplink transmission in the current serving cell and the target handover cell, and the terminal behavior will affect the subsequent cell switch delay. It is necessary to ensure that at least the transmission of the terminal in the current serving cell meets the transmission timing, or the transmission in the target handover cell meets the timing requirements to reduce performance losses. Another problem is how the terminal processes candidate cells. For example, whether to activate the TCI state or perform measurements before cell conversion will affect the cell conversion time. It is necessary to standardize the terminal behavior and clarify the cell conversion time (such as whether the cell conversion time includes the synchronization time and the SSB processing time) to improve system performance. The current serving cell can also be described as the serving cell, and the target handover cell can also be described as the target cell.

[0126] Cell conversion can be described as cell switch, which is the cell conversion of L1 / L2-triggered mobility (LTM); or it can be described as L1 / L2 cell switch, or LTM cell switch. The purpose of LTM cell switch is to convert the primary cell (PCell) or the primary secondary cell (PSCell) to another cell.

[0127] The starting point of the cell transition time is the reception of the MAC CE command for cell transition (or described as the end point of the transmission time interval (TTI) of the MAC CE command carrying the cell transition), that is to say, the starting point of the cell transition time can be described as the end point of the last transmission time interval of the MAC CE command carrying the cell transition. The end point of the cell transition time is the terminal sending the first uplink message in the target cell. Further, the uplink message includes MSG1 (MSG1 can be described as the preamble), uplink data, and RRC message.

[0128] The cell transition time can be described as the cell switch delay. Whether the first information indicates to prioritize serving cell synchronization or prioritize serving neighbor cell TCI state activation will affect the cell transition time. For example, if prioritizing neighbor cell TCI state activation, then if the terminal completes TCI state activation (TCI state activation requires receiving SSB for synchronization) before receiving the cell transition command, then the value of the synchronization-related operation in the cell transition time can be zero, that is, the cell transition time is reduced.

[0129] The cell transition time can include the time between the cell transition command and the confirmation, usually described as the HARQ time, specifically the time between the terminal receiving the MAC CE command and sending back the ACK / NACK. ACK refers to Acknowledgement, and NACK refers to Negative Acknowledgement.

[0130] The indication information for prioritizing serving cell synchronization can be described as the indication information for preferentially receiving the SSB of the serving cell. When there are L1 measurements of at least 2 cells, first receive the SSB of the serving cell, and then receive the SSB of the neighbor cell. Further, if time does not permit, the reception of the SSB of the neighbor cell can be abandoned.

[0131] The indication information for prioritizing neighbor cell TCI state activation can be described as the indication information for preferentially receiving the SSB of the neighbor cell. When there are L1 measurements of at least 2 cells, first receive the SSB of the neighbor cell, and then receive the SSB of the serving cell. Further, if time does not permit, the reception of the SSB of the serving cell can be abandoned.

[0132] The neighbor cell can also be described as the target cell, or described as the candidate cell. Specifically, the neighbor cell includes the target cell for LTM cell transition.

[0133] Gain of the first piece of information (gain of the indication information on which cell to preferentially receive): When the terminal cannot complete the reception and measurement of the SSBs of multiple cells including the serving cell within 160 ms (for example, the SSB period of each cell is 160 ms), the network indication can be used to help the terminal make a choice. The network can be described as a network device or a network side device. Specifically, when the network hopes to ensure the connection of the current serving cell (cell center), the network can indicate the terminal to preferentially process the serving cell. When the network hopes to ensure the activation performance of the neighbor cell TCI state, the network can indicate the terminal to preferentially process the neighbor cell.

[0134] Gain of the cell handover command: Helps the terminal determine the starting point of cell handover, and thus determine the cell handover time.

[0135] To successfully implement cell handover, in one embodiment, the interruption time includes at least one of the RRC configuration validity check time, the terminal processing time, the time to obtain time information, the SSB processing time, and the interruption uncertainty.

[0136] Here, the RRC configuration validity check can be described as the RRC configuration validity check of the LTM target cell. The RRC configuration validity check time can include the ASN.1 (Abstract Syntax Notation One) decoding time. The RRC configuration validity check time is 10 milliseconds.

[0137] The terminal processing time includes the time to apply the target cell configuration. For cell handover from FR1 to FR1 and from FR2 to FR2, the terminal processing time is 20 milliseconds. For cell handover from FR1 to FR2 and from FR2 to FR1, the terminal processing time is 40 milliseconds.

[0138] The time to obtain time information can be described as the time for fine (or described as fine-grained) time tracking and obtaining complete timing information. The time for fine (or described as fine-grained) time tracking and obtaining complete timing information can be understood as the time required for precise synchronization.

[0139] The interruption uncertainty can be described as the interruption uncertainty during the LTM cell handover process; the interruption uncertainty can be understood as giving a certain time margin. For the RACH-based LTM cell handover, the interruption uncertainty refers to the uncertainty in obtaining the first available PRACH opportunity. For the RACH-less LTM cell handover, the interruption uncertainty refers to the uncertainty in transmitting the first uplink transmission. RACH is the abbreviation of Random Access Channel.

[0140] In order to shorten the duration consumed by the cell handover and improve the efficiency of the cell handover, in one embodiment, the interruption time at least includes the SSB processing time, and the value of the SSB processing time is 0 when at least one of the following conditions is met:

[0141] The target TCI state is in the candidate cell active TCI state list;

[0142] The target TCI state is in the serving cell active TCI state list;

[0143] The L1-RSRP measurement time does not exceed 160 milliseconds;

[0144] The time between receiving the MAC CE and the LTM cell handover command is equal to or greater than a second threshold, where the MAC CE is the MAC CE for activating the target TCI state.

[0145] Here, both the SSB processing time and the time for obtaining time information are related to synchronization. When the target TCI state is in the active TCI state list, it means that the target TCI state is active. An active TCI state means that the terminal has measured the reference signal (such as SSB, CSI-RS) associated with the TCI state, that is, the synchronization information has been obtained. Therefore, the value of the SSB processing time and / or the value of the time for obtaining time information can be 0. Among them, the target TCI state includes the TCI state indicated in the LTM cell handover command. The active TCI state list includes the candidate cell active TCI state list, and / or, the serving cell active TCI state list. The candidate cell can be described as the LTM candidate cell.

[0146] The L1-RSRP measurement time does not exceed 160 milliseconds, which can be understood as completing the L1-RSRP measurement within 160 milliseconds, that is, measuring reference signals (such as SSB, CSI-RS) within 160 milliseconds and obtaining synchronization information. Therefore, the value of the SSB processing time and / or the value of the time for obtaining time information can be 0. The L1-RSRP measurement time does not exceed 160 milliseconds because the requirement for the terminal to maintain synchronization is that the terminal can receive / measure the SSB at least within 160 milliseconds. The time between receiving the MAC CE and the LTM cell transition command being equal to or greater than the second threshold allows sufficient processing time for the terminal. The L1-RSRP measurement time can also be described as the L1-RSRP measurement delay or the L1-RSRP measurement period.

[0147] In order to improve the efficiency of cell transition, in one embodiment, the interruption time at least includes the time for obtaining time information, and the value of the time for obtaining time information is 0 when at least one of the following conditions is met:

[0148] The target TCI state is in the candidate cell activation TCI state list;

[0149] The target TCI state is in the serving cell activation TCI state list;

[0150] The L1-RSRP measurement time does not exceed 160 milliseconds;

[0151] The time between receiving the MAC CE and the LTM cell transition command is equal to or greater than the second threshold, where the MAC CE is the MAC CE for activating the target TCI state.

[0152] In order to successfully implement cell transition, in one embodiment, the second threshold at least includes the HARQ time and the time from when the MAC CE command is decoded to the transmission of the first SSB.

[0153] In order to ensure that the transmission of the terminal in the serving cell meets the transmission timing requirements, in one embodiment, after receiving the first information sent by the network device, the method further includes:

[0154] When the first information indicates that the terminal gives priority to synchronizing with the serving cell, preferentially receive the SSB of the serving cell.

[0155] Here, if the first piece of information indicates that the terminal should prioritize serving cell synchronization, then the terminal preferentially receives the SSB of the serving cell, and the terminal needs to meet the transmission accuracy requirements of the serving cell (such as transmitting a preamble). The activation of the neighbor cell TCIstate is the best effort of the terminal, that is, if the terminal has the opportunity to measure, it can measure, and if not, it can also choose not to measure, and the transmission accuracy requirements of the neighbor cell can be not met.

[0156] In order to ensure that the transmission of the terminal in the target cell meets the transmission timing requirements, in one embodiment, after receiving the first piece of information sent by the network device, the method further includes at least one of the following:

[0157] When the first piece of information indicates that the terminal should prioritize the activation of the TCI state of the neighbor cell, preferentially receive the SSB of the neighbor cell;

[0158] When switching to a neighbor cell, send data according to the transmission time index of the corresponding neighbor cell.

[0159] Here, if the first piece of information indicates that the terminal should prioritize the activation of the neighbor cell TCI state, then the terminal preferentially receives the SSB of the neighbor cell, and the terminal needs to meet the subsequent transmission accuracy requirements in the neighbor cell. The serving cell synchronization is the best effort of the terminal, that is, if the terminal has the opportunity to measure, it can measure, and if not, it can also choose not to measure, and the serving cell transmission accuracy requirements can be not met.

[0160] The transmission time index can be described as the transmission time requirement, or described as the transmission timing requirement. The transmission time requirement includes the transmission time error requirement (or described as the transmission timing error requirement), and the time adjustment requirement (or described as the timing adjustment requirement). The transmission time index is an index in the time dimension, representing the deviation between the actual transmission time and the ideal transmission time.

[0161] In order to ensure that the transmission of the terminal in the target cell meets the transmission timing requirements, in one embodiment, the transmission time error of the first transmission in the target cell is less than or equal to the first threshold; and / or

[0162] After receiving the cell change command, the transmission in the target cell meets the transmission time error requirement.

[0163] Here, the first transmission can be described as an initial transmission. The first threshold can be defined in the protocol. The first threshold is a time error limit, which can be understood as the maximum allowable time error (or described as the transmission time error requirement). The value of the first threshold is related to the frequency range, the sub-carrier spacing (SCS) of the SSB, and the SCS of the uplink signal. Taking 15KHz SSB SCS as an example, when the SCS of the uplink signal is 15KHz, the value of the first threshold is 12×64×Tc; when the SCS of the uplink signal is 30KHz, the value of the first threshold is 10×64×Tc; when the SCS of the uplink signal is 60KHz, the value of the first threshold is 10×64×Tc. Tc is a time unit, and Tc = 1 / (480×1000×4096), approximately 0.509 nanoseconds.

[0164] After receiving the cell handover command, the transmission in the target cell meets the transmission time error requirement, which can also be described as: after receiving the LTM cell handover command, the transmission in the target cell meets the transmission time error requirement. The transmission in the target cell meets the transmission time error, which can also be described as: the error of the transmission in the target cell does not exceed the transmission time error requirement.

[0165] The transmission time error refers to the difference between the actual transmission time of the terminal and the ideal transmission time (the ideal transmission time can also be described as the reference point of the terminal's initial transmission). The above reference point is the downlink time of the reference cell (or described as downlink timing) minus (N TA +N TA offset )×Tc, and the values of N TA and N TA offset are configured through the network or predefined in the protocol; that is, the reference point = the downlink time of the reference cell - (N TA +N TA offset )×Tc. Tc is a time unit. The downlink time is the time of the first path of the downlink frame received by the terminal in the reference cell. Further, the above downlink frame is the downlink frame used by the terminal to determine the downlink time. Since there will be deviations when the terminal determines the downlink time and when applying N TA and N TA offset , there is a deviation between the actual transmission time of the terminal and the ideal transmission time, that is, there is a transmission time error.

[0166] The transmission time error requirement refers to the maximum allowable transmission time error, that is, the transmission time error of the terminal needs to be less than or equal to the transmission time error requirement.

[0167] In one embodiment, when at least one of the following conditions is met, the transmission time error of the first transmission in the target cell is less than or equal to the first threshold:

[0168] There is at least one SSB in the first time.

[0169] The L1-RSRP measurement time does not exceed 160 milliseconds.

[0170] Here, the first time can be configured by the network device or pre-defined in the protocol, for example, with a value of 160 milliseconds. There is at least one SSB in the first time, which can be described as at least one SSB is available in the first time; it can also be described as the terminal receives at least one SSB in the first time, or the terminal receives one SSB within the first time.

[0171] In order to at least ensure that the transmission of the terminal in the serving cell meets the transmission timing requirements, and to try to ensure that the transmission of the terminal in the target cell meets the transmission timing requirements, the terminal can preferentially receive the SSB of the serving cell according to the first information to perform serving cell synchronization first; after the reception of the SSB of the serving cell is completed, if there is an opportunity, then receive the SSB of the neighboring cell, and if there is no opportunity, then do not receive the SSB of the neighboring cell. Based on this, in one embodiment, after receiving the first information sent by the network device, the method further includes one of the following:

[0172] When the period of the SSB of the serving cell is less than the set duration and the reception of the SSB of the serving cell is completed, receive the SSB of the neighboring cell;

[0173] When the sum of the period of the SSB of the serving cell and the period of the SSB of the neighboring cell is less than or equal to the set duration and the reception of the SSB of the serving cell is completed, receive the SSB of the neighboring cell;

[0174] When the period of the SSB of the serving cell is equal to the set duration, do not receive the SSB of the neighboring cell.

[0175] Here, when receiving the first information sent by the network device, if the first information includes the indication information for the terminal to preferentially perform serving cell synchronization, then the terminal preferentially receives the SSB of the serving cell to preferentially perform serving cell synchronization. On the basis of preferentially receiving the SSB of the serving cell, the terminal can perform at least one of the following:

[0176] When the period of the SSB of the serving cell is less than the set duration and the reception of the SSB of the serving cell is completed, receive the SSB of the neighboring cell;

[0177] When the sum of the period of the SSB of the serving cell and the period of the SSB of the neighboring cell is less than or equal to the set duration and the reception of the SSB of the serving cell is completed, receive the SSB of the neighboring cell;

[0178] When the period of the SSB of the serving cell is equal to the set duration, the SSB of the neighboring cell is not received.

[0179] It should be noted that the set duration can be a fixed value, such as 160 milliseconds, or an integer multiple of the SSB period. When the period of the SSB of the serving cell is less than the set duration, and / or when the sum of the period of the SSB of the serving cell and the period of the SSB of the neighboring cell is less than or equal to the set duration, it indicates that after the terminal completes receiving the SSB of the serving cell, there is still a chance to receive the SSB of the neighboring cell. When the period of the SSB of the serving cell is equal to the set duration, it indicates that after the terminal receives the SSB of the serving cell, there is no chance to receive the SSB of the neighboring cell.

[0180] In order to at least ensure that the transmission of the terminal in the target cell meets the transmission timing requirements, and to try to ensure that the transmission of the terminal in the serving cell meets the transmission timing requirements, the terminal can preferentially receive the SSB of the neighboring cell according to the first information to preferentially activate the TCI state of the neighboring cell; after the SSB of the neighboring cell is received, if there is a chance, then receive the SSB of the serving cell, and if there is no chance, then do not receive the SSB of the serving cell. Based on this, in one embodiment, after receiving the first information sent by the network device, the method further includes one of the following:

[0181] When the period of the SSB of the neighboring cell is less than the set duration and the SSB of the neighboring cell is received, receive the SSB of the serving cell;

[0182] When the sum of the period of the SSB of the neighboring cell and the period of the SSB of the serving cell is less than or equal to the set duration and the SSB of the neighboring cell is received, receive the SSB of the serving cell;

[0183] When the period of the SSB of the neighboring cell is equal to the set duration, do not receive the SSB of the serving cell.

[0184] Here, when the terminal receives the first information sent by the network device, if the first information includes the indication information that the terminal preferentially activates the TCI state of the neighboring cell, then the terminal preferentially receives the SSB of the neighboring cell to preferentially activate the TCI state of the neighboring cell. On the basis of preferentially receiving the SSB of the neighboring cell, the terminal can perform at least one of the following:

[0185] When the period of the SSB of the neighboring cell is less than the set duration and the SSB of the neighboring cell is received, receive the SSB of the serving cell;

[0186] When the sum of the period of the SSB of the neighboring cell and the period of the SSB of the serving cell is less than or equal to the set duration and the SSB of the neighboring cell is received, receive the SSB of the serving cell;

[0187] When the period of the SSB of the neighboring cell is equal to the set duration, the SSB of the serving cell is not received.

[0188] Among them, when the period of the SSB of the neighboring cell is less than the set duration, and / or the sum of the period of the SSB of the neighboring cell and the period of the SSB of the serving cell is less than or equal to the set duration, it indicates that after the terminal completes receiving the SSB of the neighboring cell, there is an opportunity to receive the SSB of the serving cell. When the period of the SSB of the neighboring cell is equal to the set duration, it indicates that after the terminal receives the SSB of the neighboring cell, there is no opportunity to receive the SSB of the serving cell.

[0189] When the first information can indicate that the terminal preferentially activates the TCI state of the neighboring cell, if the terminal cannot complete the reception and measurement of the SSBs of multiple neighboring cells within 160 ms, the network device can also indicate to the terminal which cells to preferentially activate the TCI state, so as to preferentially ensure that the transmission of the terminal in the neighboring cell with a higher priority meets the transmission timing requirements. Based on this, in one embodiment, after receiving the first information sent by the network device, the method further includes:

[0190] Receiving the second information sent by the network device; where

[0191] The second information indicates the priority of the first neighboring cell or multiple second neighboring cells; the first neighboring cell represents the neighboring cell for which the TCI state activation is preferentially performed; the second neighboring cell represents the neighboring cell for which the TCI state activation is required.

[0192] Here, the network device can send the second information after sending the first information, or can send the second information before sending the first information, or can also send the first information and the second information to the terminal at the same time. The second information indicates the first neighboring cell, or indicates the priorities of multiple second neighboring cells.

[0193] Gain of the second information: When multiple neighboring cells need to activate the TCI state, if the terminal cannot complete the reception / measurement of the SSBs of multiple neighboring cells within 160 ms, the second information can indicate to the terminal which neighboring cells to preferentially activate the TCI state.

[0194] The terminal can, according to the second information, preferentially activate the TCI state for cells with high priority. If uplink transmission is to be performed in these cells subsequently, the transmission accuracy requirements need to be met. Specifically, the network device can determine the priorities for activating the TCI state for multiple neighboring cells based on the L3 measurement results reported by the terminal before. For example, for neighboring cells with better L3 measurement results, the corresponding priorities are higher. If there are no L3 measurement results, the network device can also, based on factors such as load / capacity, rank higher the priorities of the cells for which the L1 handover of the terminal is expected, or rank lower the priorities of inter-frequency cells. That is to say, the network device can configure higher priorities for the cells for which the L1 handover of the terminal is expected and lower priorities for inter-frequency cells.

[0195] To preferentially ensure that the transmission of the terminal in high-priority neighboring cells meets the transmission timing requirements, in one embodiment, after receiving the second information sent by the network device, the method further includes:

[0196] According to the second information, preferentially receive the SSB of the first neighboring cell or the second neighboring cell with high priority.

[0197] Here, in the case where the second information indicates the first neighboring cell, the terminal preferentially receives the SSB of the first neighboring cell. After the reception of the SSB of the first neighboring cell is completed, if there is an opportunity, it can also receive the SSB of other neighboring cells. In the case where the second information indicates the priorities of multiple second neighboring cells, the terminal sorts according to the priorities of the second neighboring cells and preferentially receives the SSB of the second neighboring cell with high priority. In the case where the reception of the SSB of the second neighboring cell with high priority is completed, if there is an opportunity, it can also receive the SSB of the second neighboring cell with lower priority.

[0198] To further standardize the behavior of the terminal and improve the performance of the system, in one embodiment, the method further includes:

[0199] Receive the third information sent by the network device, where

[0200] The third information indicates at least one of the following:

[0201] Whether to relax the transmission time metric;

[0202] The relaxation ratio of the transmission time metric, and the relaxation ratio of the transmission time metric is determined according to the number of cells and / or the period of the SSB;

[0203] The identifier / index of the cell for which the transmission time metric is relaxed.

[0204] Here, the order among the first information, the second information, and the third information is not limited. The terminal can receive the third information sent by the network device after receiving the first information and / or the second information.

[0205] The transmission time indicator can be described as a transmission time requirement or a transmission timing requirement. The transmission time requirement includes a transmission time error requirement (or described as a transmission timing error requirement) and a time adjustment requirement (or described as a timing adjustment requirement). The transmission time indicator is an indicator in the time dimension, representing the deviation between the actual transmission time and the ideal transmission time, such as N×Ts more or M×Tc; Ts and Tc are time units related to the Fast Fourier Transform (FFT) size and SCS, and N and M are integers.

[0206] Relaxing the transmission time indicator can be understood as formulating a new transmission time indicator or transmission timing requirement, allowing a larger deviation between the transmission time and the ideal transmission time. For example: The new transmission timing requirement is P×Ts or Q×Tc, where P and Q are integers, P > N, Q > M. Another example: The new transmission timing requirement is A×N×Ts or B×M×Tc, and A and B are scaling factors that can be sent by the network device.

[0207] The number of cells includes "the number of neighboring cells" or "the number of neighboring cells for which the TCI state needs to be activated". The network device can determine the relaxation ratio of the transmission time indicator based on the number of cells and / or the SSB. For example, if the terminal needs to activate the TCI state for 5 cells, and the period of the SSB of each cell is 40 ms, then within 160 ms, the terminal can only receive / measure the SSBs of 4 cells. Combining with the previous second information, if the number of cells for which the terminal preferentially activates the TCI state is 2, then the transmission time indicators of the remaining 3 cells need to be relaxed, and the relaxation ratio of the transmission time indicator can be 3 / 2 (or described as the scaling factor is 3 / 2).

[0208] The third information includes the gain of the scheme for relaxing the transmission time indicator: Compared with the case without a precision indicator (such as a transmission timing indicator) requirement, the third information can appropriately relax the transmission precision by referring to the periods of the SSBs of multiple cells, and standardize the behavior of the terminal through the updated precision indicator requirement, which is more conducive to improving the performance of the system. The relaxed transmission time indicator can be understood as: compared with the prior art, the maximum allowable transmission time error can be larger, that is, a larger error can be allowed.

[0209] To improve the system performance, the network device can also indicate whether to relax the transmission precision of the serving cell or the neighboring cells for the terminal. Based on this, in an embodiment, after receiving the third information sent by the network device, the method further includes:

[0210] Receive the fourth information sent by the network device; wherein, the fourth information indicates that the terminal relaxes the transmission time indicator for the serving cell or relaxes the transmission time indicator for the neighboring cell.

[0211] In an embodiment, before performing cell conversion, the method further includes:

[0212] Relax the transmission time indicator for the serving cell when the period of the SSB of the serving cell is equal to a set duration, or when the period of the SSB of each cell is the set duration.

[0213] Here, in practical applications, it is usually necessary to ensure the performance of the serving cell first. If it is not indicated by network signaling whether to perform low-priority processing on the serving cell, then the terminal can autonomously decide whether to relax the serving cell through the following events:

[0214] The period of the SSB of the serving cell is equal to the set duration, or

[0215] The period of the SSB of each cell is the set duration.

[0216] It should be noted that the set duration can be a fixed value, such as 160 milliseconds, or an integer multiple of the period of the SSB. Except for the above two scenarios, the terminal can find an opportunity to receive / measure the SSB of the serving cell every 160 ms.

[0217] Correspondingly, an embodiment of the present application further provides a cell conversion method applied to a network device. The network device can be described as a network or a network-side device; the network device includes a base station. As Figure 2 shown, the method includes:

[0218] Step 201: Send the first information to the terminal.

[0219] Wherein, the first information includes at least one of the following:

[0220] Indication information for the terminal to give priority to synchronizing with the serving cell;

[0221] Indication information for preferentially activating the TCI state of the neighboring cell;

[0222] Cell conversion command.

[0223] Here, the network device determines the first information and sends the first information to the terminal.

[0224] In a case where the first information can indicate that the terminal preferentially activates the TCI state of a neighboring cell, the network device can further indicate to the terminal which cells to preferentially activate the TCI state for, so as to preferentially ensure that the transmission of the terminal in the neighboring cell with a higher priority meets the transmission timing requirements. Based on this, in one embodiment, the method further includes:

[0225] Sending second information to the terminal; wherein,

[0226] The second information indicates the priority of a first neighboring cell or a plurality of second neighboring cells; the first neighboring cell represents a neighboring cell for preferentially activating the TCI state; the second neighboring cell represents a neighboring cell for which the TCI state needs to be activated.

[0227] Here, the network device determines the second information and sends the second information to the terminal.

[0228] It should be noted that the network device can send the second information to the terminal after sending the first information to the terminal, or can send the first information and the second information to the terminal simultaneously.

[0229] Before the network device sends the second information to the terminal, it is necessary to first determine the priority of the second neighboring cell, so as to preferentially ensure that the transmission of the terminal in the second neighboring cell with a higher priority meets the transmission timing requirements. Based on this, in one embodiment, before sending the second information to the terminal, the method further includes:

[0230] Determining the priority of the second neighboring cell according to at least one of the following:

[0231] The L3 measurement result of the second neighboring cell;

[0232] The load of the second neighboring cell;

[0233] The capacity of the second neighboring cell;

[0234] The second neighboring cell for which the terminal is expected to perform L1 handover;

[0235] The cell type of the second neighboring cell, and the cell type is a co-frequency cell or an inter-frequency cell.

[0236] Here, the network device can determine the priority of activating the TCI state for multiple second neighboring cells based on the L3 measurement results of the second neighboring cells previously reported by the terminal. For example, for a second neighboring cell with better L3 measurement results, the corresponding priority is higher. That is to say, the better the signal quality characterized by the L3 measurement results of the second neighboring cell, the higher the priority of the second neighboring cell. If there are no L3 measurement results, the network device can also determine the priority of each second neighboring cell based on factors such as the load and / or capacity of the second neighboring cell. The network device can also give a higher priority to the second neighboring cell where it is expected that the terminal will perform an L1 handover. The network device can also determine the priority of each second neighboring cell according to the cell type of each second neighboring cell, where the priority configured for a co-frequency cell is higher than the priority configured for an inter-frequency cell.

[0237] To improve system performance, the network device can also instruct the terminal to appropriately relax the transmission accuracy. Based on this, in one embodiment, the method further includes:

[0238] Sending third information to the terminal, where

[0239] the third information indicates at least one of the following:

[0240] Whether to relax the transmission time indicator;

[0241] The relaxation ratio of the transmission time indicator, and the relaxation ratio of the transmission time indicator is determined according to the number of cells and / or the period of the SSB;

[0242] The identifier / index of the cell for which the transmission time indicator is relaxed.

[0243] Here, the network device determines the third information and sends the third information to the terminal.

[0244] The number of cells includes the number of neighboring cells or the number of neighboring cells for which the TCI state needs to be activated.

[0245] The network device can determine the relaxation ratio of the transmission time indicator according to a set duration (such as 160 ms) and the period of the SSB; it can also determine the relaxation ratio of the transmission time indicator according to the number of cells.

[0246] The network device can also determine the relaxation ratio of the transmission time indicator based on the period of the SSB and the number of cells. For example, if the terminal needs to activate the TCI state for 5 cells, and the period of the SSB for each cell is 40 ms, then within 160 ms, the terminal can only receive / measure the SSBs of 4 cells. Combining the second information mentioned above, if the number of cells for which the terminal preferentially activates the TCI state is 2, then the transmission time indicators of the remaining 3 cells need to be relaxed. The network device can determine the relaxation ratio of the transmission time indicator as 3 / 2, that is, the scaling factor of the transmission time indicator is 3 / 2.

[0247] It should be noted that in the embodiments of the present application, the order of sending the first information, the second information, and the third information is not limited. The network device can send the third information to the terminal after sending the first information and / or the second information, or can send the third information to the terminal before sending the first information and / or the second information.

[0248] To improve system performance, the network device can also instruct the terminal to relax the transmission accuracy of the serving cell or the neighboring cell. Based on this, in one embodiment, the method further includes:

[0249] Sending fourth information to the terminal; wherein the fourth information instructs the terminal to relax the transmission time indicator of the serving cell or the transmission time of the neighboring cell.

[0250] To implement the method on the terminal side in the embodiments of the present application, the embodiments of the present application further provide a cell conversion device, which is set on the terminal, as Figure 3 shown, the device includes:

[0251] A processing unit 301, configured to perform cell conversion, and the cell conversion time at least includes an interruption time; and / or

[0252] A first receiving unit 302, configured to receive the first information sent by the network device; wherein the first information includes at least one of the following:

[0253] An indication information for the terminal to preferentially synchronize with the serving cell;

[0254] An indication information for the terminal to preferentially activate the TCI state of the neighboring cell;

[0255] A cell conversion command.

[0256] In one embodiment, the device further includes:

[0257] A second receiving unit, configured to preferentially receive the SSB of the serving cell when the first information indicates that the terminal preferentially synchronizes with the serving cell.

[0258] In one embodiment, the apparatus further includes at least one of the following:

[0259] A third receiving unit, configured to preferentially receive the SSB of a neighboring cell when the first information indicates that the terminal preferentially activates the TCI state of the neighboring cell;

[0260] A second transmitting unit, configured to transmit data according to the transmission time index of the corresponding neighboring cell when switching to the neighboring cell.

[0261] In one embodiment, the transmission time error of the first transmission of the target cell is less than or equal to a first threshold; and / or,

[0262] After receiving the cell conversion command, the transmission of the target cell meets the transmission time error requirement.

[0263] In one embodiment, when at least one of the following conditions is satisfied, the transmission time error of the first transmission of the target cell is less than or equal to a first threshold:

[0264] There is at least one SSB in the first time;

[0265] The L1-RSRP measurement time does not exceed 160 milliseconds.

[0266] In one embodiment, the second receiving unit is further configured to perform one of the following:

[0267] Receive the SSB of the neighboring cell when the period of the SSB of the serving cell is less than a set duration and the reception of the SSB of the serving cell is completed;

[0268] Receive the SSB of the neighboring cell when the sum of the period of the SSB of the serving cell and the period of the SSB of the neighboring cell is less than or equal to a set duration and the reception of the SSB of the serving cell is completed;

[0269] Do not receive the SSB of the neighboring cell when the period of the SSB of the serving cell is equal to a set duration.

[0270] In one embodiment, the third receiving unit is further configured to perform one of the following:

[0271] Receive the SSB of the serving cell when the period of the SSB of the neighboring cell is less than a set duration and the reception of the SSB of the neighboring cell is completed;

[0272] Receive the SSB of the serving cell when the sum of the period of the SSB of the neighboring cell and the period of the SSB of the serving cell is less than or equal to a set duration and the reception of the SSB of the neighboring cell is completed;

[0273] When the period of the SSB of the neighboring cell is equal to the set duration, the SSB of the serving cell is not received.

[0274] In one embodiment, the apparatus further comprises:

[0275] A fourth receiving unit, configured to receive second information sent by the network device; wherein,

[0276] The second information indicates the priority of a first neighboring cell or a plurality of second neighboring cells; the first neighboring cell represents a neighboring cell for which TCI state activation is preferentially performed; the second neighboring cell represents a neighboring cell for which TCI state activation is required.

[0277] In one embodiment, the apparatus further comprises:

[0278] A fifth receiving unit, configured to preferentially receive the SSB of the first neighboring cell or the second neighboring cell with a high priority according to the second information.

[0279] In one embodiment, the apparatus further comprises:

[0280] A sixth receiving unit, configured to receive third information sent by the network device, wherein,

[0281] The third information indicates at least one of the following:

[0282] Whether to relax the transmission time metric;

[0283] The relaxation ratio of the transmission time metric, and the relaxation ratio of the transmission time metric is determined according to the number of cells and / or the period of the SSB;

[0284] The identifier / index of the cell for which the transmission time metric is relaxed.

[0285] In one embodiment, the apparatus further comprises:

[0286] A seventh receiving unit, configured to receive fourth information sent by the network device; wherein the fourth information indicates that the terminal relaxes the transmission time metric of the serving cell or relaxes the transmission time metric of the neighboring cell.

[0287] In one embodiment, the processing unit 301 is further configured to relax the transmission time metric of the serving cell when the period of the SSB of the serving cell is equal to the set duration, or when the period of the SSB of each cell is the set duration.

[0288] In one embodiment, the interruption time includes at least one of the validity check time of the RRC configuration, the terminal processing time, the time for obtaining time information, the SSB processing time, and the interruption uncertainty. In one embodiment, the interruption time includes at least the SSB processing time, and when at least one of the following conditions is met, the value of the SSB processing time is 0:

[0289] The target TCI state is in the active TCI state list of the candidate cell;

[0290] The target TCI state is in the active TCI state list of the serving cell;

[0291] The L1-RSRP measurement time does not exceed 160 milliseconds;

[0292] The time between receiving the MAC CE and the LTM cell transition command is equal to or greater than a second threshold, where the MAC CE is the MAC CE for activating the target TCI state.

[0293] In one embodiment, the interruption time includes at least the time for obtaining time information, and when at least one of the following conditions is met, the value of the time for obtaining time information is 0:

[0294] The target TCI state is in the active TCI state list of the candidate cell;

[0295] The target TCI state is in the active TCI state list of the serving cell;

[0296] The L1-RSRP measurement time does not exceed 160 milliseconds;

[0297] The time between receiving the MAC CE and the LTM cell transition command is equal to or greater than a second threshold, where the MAC CE is the MAC CE for activating the target TCI state.

[0298] In one embodiment, the second threshold includes at least the HARQ time and the time from when the MAC CE command is decoded to the transmission of the first SSB.

[0299] In practical applications, the processing unit 301 can be implemented by a processor in the cell transition device, and the first receiving unit 302, the second receiving unit, the second sending unit, the third receiving unit, the fourth receiving unit, the fifth receiving unit, the sixth receiving unit, and the seventh receiving unit can be implemented by a processor in the cell transition device in combination with a communication interface.

[0300] To implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide a cell conversion device, which is arranged on the network device, such as Figure 4 As shown, the device includes:

[0301] A first sending unit 401, configured to send first information to a terminal; wherein, the first information includes at least one of the following:

[0302] An indication message for the terminal to preferentially synchronize the serving cell;

[0303] An indication message for preferentially activating the TCI state of a neighboring cell;

[0304] A cell conversion command.

[0305] In one embodiment, the device further includes:

[0306] A third sending unit, configured to send second information to the terminal; wherein,

[0307] The second information indicates the priority of a first neighboring cell or multiple second neighboring cells; the first neighboring cell represents a neighboring cell for preferentially activating the TCI state; the second neighboring cell represents a neighboring cell that needs to activate the TCI state.

[0308] In one embodiment, the device further includes:

[0309] A determining unit, configured to determine the priority of the second neighboring cell according to at least one of the following:

[0310] The L3 measurement result of the second neighboring cell;

[0311] The load of the second neighboring cell;

[0312] The capacity of the second neighboring cell;

[0313] The second neighboring cell that expects the terminal to perform an L1 handover;

[0314] The cell type of the second neighboring cell, and the cell type is a co-frequency cell or an inter-frequency cell.

[0315] In one embodiment, the device further includes:

[0316] A fourth sending unit, configured to send third information to the terminal, wherein,

[0317] The third information indicates at least one of the following:

[0318] Whether to relax the transmission time index;

[0319] The relaxation ratio of the transmission time index, and the relaxation ratio of the transmission time index is determined according to the number of cells and / or the period of the SSB;

[0320] Identity / index of the cell that relaxes the transmission time metric.

[0321] In one embodiment, the apparatus further includes:

[0322] A fifth transmission unit, configured to send fourth information to the terminal; wherein, the fourth information indicates that the terminal relaxes the transmission time metric of the serving cell or relaxes the transmission time of the neighboring cell.

[0323] In actual application, the determining unit may be implemented by a processor in the cell conversion device, and the first transmission unit 401, the third transmission unit, the fourth transmission unit, and the fifth transmission unit may be implemented by a processor in the cell conversion device in combination with a communication interface.

[0324] It should be noted that: when the above-mentioned cell conversion device performs cell conversion, only the division of the above-mentioned program modules is used for illustration. In actual application, the above-mentioned processing may be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-mentioned processing. In addition, the cell conversion device provided in the above-mentioned embodiment and the cell conversion method embodiment belong to the same concept. For the specific implementation process, please refer to the method embodiment, which will not be elaborated here.

[0325] Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiments of the present application, the embodiments of the present application further provide a terminal, as Figure 5 shown, the terminal 500 includes:

[0326] A first communication interface 501, capable of interacting with other network nodes for information;

[0327] A first processor 502, connected to the first communication interface 501 to implement information interaction with other network nodes, and when running a computer program, executes the method provided by one or more of the above technical solutions on the terminal side. And the computer program is stored on the first memory 503.

[0328] Specifically, the first processor 502 is configured to perform cell conversion, and the cell conversion time at least includes an interruption time; and / or

[0329] The first communication interface 501 is configured to receive first information sent by a network device; wherein, the first information includes at least one of the following:

[0330] An indication information for the terminal to preferentially synchronize with the serving cell;

[0331] An indication information for the terminal to preferentially activate the TCI state of the neighboring cell;

[0332] Cell conversion command.

[0333] In one embodiment, the first communication interface 501 is further configured to preferentially receive the SSB of the serving cell when the first information indicates that the terminal preferentially performs serving cell synchronization.

[0334] In one embodiment, the first communication interface 501 is further configured to perform at least one of the following:

[0335] When the first information indicates that the terminal preferentially activates the TCI state of the neighboring cell, preferentially receive the SSB of the neighboring cell;

[0336] When switching to a neighboring cell, send data according to the transmission time index of the corresponding neighboring cell.

[0337] In one embodiment, the transmission time error of the first transmission of the target cell is less than or equal to the first threshold; and / or

[0338] After receiving the cell conversion command, the transmission of the target cell meets the transmission time error requirement.

[0339] In one embodiment, when at least one of the following conditions is met, the transmission time error of the first transmission of the target cell is less than or equal to the first threshold:

[0340] There is at least one SSB in the first time;

[0341] The L1-RSRP measurement time does not exceed 160 milliseconds.

[0342] In one embodiment, the first communication interface 501 is further configured to perform one of the following:

[0343] When the period of the SSB of the serving cell is less than the set duration and the reception of the SSB of the serving cell is completed, receive the SSB of the neighboring cell;

[0344] When the sum of the period of the SSB of the serving cell and the period of the SSB of the neighboring cell is less than or equal to the set duration and the reception of the SSB of the serving cell is completed, receive the SSB of the neighboring cell;

[0345] When the period of the SSB of the serving cell is equal to the set duration, do not receive the SSB of the neighboring cell.

[0346] In one embodiment, the first communication interface 501 is further configured to perform one of the following:

[0347] When the period of the SSB of the neighboring cell is less than the set duration and the reception of the SSB of the neighboring cell is completed, receive the SSB of the serving cell;

[0348] When the sum of the period of the SSB of the neighboring cell and the period of the SSB of the serving cell is less than or equal to the set duration and the reception of the SSB of the neighboring cell is completed, receive the SSB of the serving cell;

[0349] When the period of the SSB of the neighboring cell is equal to the set duration, do not receive the SSB of the serving cell.

[0350] In one embodiment, the first communication interface 501 is further configured to receive second information sent by the network device; wherein,

[0351] The second information indicates the priority of the first neighboring cell or multiple second neighboring cells; the first neighboring cell represents the neighboring cell for which TCI state activation is preferentially performed; the second neighboring cell represents the neighboring cell for which TCI state activation is required.

[0352] In one embodiment, the first communication interface 501 is further configured to preferentially receive the SSB of the first neighboring cell or the second neighboring cell with a high priority according to the second information.

[0353] In one embodiment, the first communication interface 501 is further configured to receive third information sent by the network device, wherein,

[0354] The third information indicates at least one of the following:

[0355] Whether to relax the transmission time metric;

[0356] The relaxation ratio of the transmission time metric, and the relaxation ratio of the transmission time metric is determined according to the number of cells and / or the period of the SSB;

[0357] The identifier / index of the cell for which the transmission time metric is relaxed.

[0358] In one embodiment, the first communication interface 501 is further configured to receive fourth information sent by the network device; wherein the fourth information indicates that the terminal relaxes the transmission time metric of the serving cell or relaxes the transmission time metric of the neighboring cell.

[0359] In one embodiment, the first processor 502 is further configured to relax the transmission time metric of the serving cell when the period of the SSB of the serving cell is equal to the set duration or the period of the SSB of each cell is the set duration.

[0360] In one embodiment, the interruption time includes at least one of the validity check time of the RRC configuration, the terminal processing time, the time for obtaining time information, the SSB processing time, and the interruption uncertainty. In one embodiment, the interruption time includes at least the SSB processing time, and the value of the SSB processing time is 0 when at least one of the following conditions is satisfied:

[0361] The target TCI state is in the active TCI state list of the candidate cell;

[0362] The target TCI state is in the active TCI state list of the serving cell;

[0363] The L1-RSRP measurement time does not exceed 160 milliseconds;

[0364] The time between receiving the MAC CE and the LTM cell transition command is equal to or greater than a second threshold, where the MAC CE is the MAC CE that activates the target TCI state.

[0365] In one embodiment, the interruption time at least includes the time for obtaining time information, and when at least one of the following conditions is met, the value of the time for obtaining time information is 0:

[0366] The target TCI state is in the active TCI state list of the candidate cell;

[0367] The target TCI state is in the active TCI state list of the serving cell;

[0368] The L1-RSRP measurement time does not exceed 160 milliseconds;

[0369] The time between receiving the MAC CE and the LTM cell transition command is equal to or greater than a second threshold, where the MAC CE is the MAC CE that activates the target TCI state.

[0370] In one embodiment, the second threshold at least includes the HARQ time and the time from when the MAC CE command is decoded to the transmission of the first SSB.

[0371] It should be noted that: The specific processing procedures of the first processor 502 and the first communication interface 501 can be understood with reference to the above method.

[0372] Of course, in actual applications, the various components in the terminal 500 are coupled together through the bus system 504. It can be understood that the bus system 504 is used to implement the connection and communication between these components. The bus system 504 includes not only a data bus, but also a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 5 all kinds of buses are labeled as the bus system 504.

[0373] The first memory 503 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 500. Examples of these data include: any computer program for operating on the terminal 500.

[0374] The method disclosed in the embodiments of the present application can be applied to or implemented by the first processor 502. The first processor 502 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method can be completed by the integrated logic circuit of the hardware in the first processor 502 or the instructions in the form of software. The above-mentioned first processor 502 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 502 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed and completed by the hardware decoding processor, or executed and completed by the combination of the hardware and software modules in the decoding processor. The software module may be located in the storage medium, and this storage medium is located in the first memory 503. The first processor 502 reads the information in the first memory 503 and combines its hardware to complete the steps of the foregoing method.

[0375] In an exemplary embodiment, the terminal 500 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontroller units (MCUs), microprocessors, or other electronic components, and is used to execute the foregoing method.

[0376] Based on the above hardware implementation of the program module, and in order to implement the method on the network device side in the embodiments of the present application, the embodiments of the present application also provide a network device. As Figure 6 shown, this network device 600 includes:

[0377] A second communication interface 601, capable of interacting with other network nodes for information;

[0378] A second processor 602, connected to the second communication interface 601 to enable information interaction with other network nodes, is configured to execute the method provided by one or more of the above technical solutions on the network device side when running a computer program. The computer program is stored on a second memory 603.

[0379] Specifically, the second communication interface 601 is configured to send first information to a terminal; wherein, the first information includes at least one of the following:

[0380] Indication information for the terminal to prioritize serving cell synchronization;

[0381] Indication information for preferentially activating the TCI state of a neighboring cell;

[0382] A cell transition command.

[0383] In one embodiment, the second communication interface 601 is further configured to send second information to the terminal; wherein, the second information indicates the priority of a first neighboring cell or multiple second neighboring cells; the first neighboring cell represents a neighboring cell for which TCI state activation is prioritized; the second neighboring cell represents a neighboring cell for which TCI state activation is required.

[0384] In one embodiment, the second processor 602 is configured to determine the priority of a second neighboring cell based on at least one of the following:

[0385] The L3 measurement result of the second neighboring cell;

[0386] The load of the second neighboring cell;

[0387] The capacity of the second neighboring cell;

[0388] A second neighboring cell for which the terminal is expected to perform an L1 handover;

[0389] The cell type of the second neighboring cell, where the cell type is a co-frequency cell or an inter-frequency cell.

[0390] In one embodiment, the second communication interface 601 is further configured to send third information to the terminal, where the third information indicates at least one of the following:

[0391] Whether to relax the transmission time metric;

[0392] The relaxation ratio of the transmission time metric, where the relaxation ratio of the transmission time metric is determined based on the number of cells and / or the period of the SSB;

[0393] The identifier / index of the cell for which the transmission time metric is relaxed.

[0394] In one embodiment, the second communication interface 601 is further configured to send fourth information to the terminal; wherein the fourth information instructs the terminal to relax the transmission time metric of the serving cell or to relax the transmission time of the neighboring cell.

[0395] It should be noted that: The specific processing procedures of the second processor 602 and the second communication interface 601 can be understood with reference to the above method.

[0396] Of course, in actual applications, the various components in the network device 600 are coupled together through the bus system 604. It can be understood that the bus system 604 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 604 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, in Figure 6 all kinds of buses are labeled as the bus system 604.

[0397] The second memory 603 in the embodiments of the present application is used to store various types of data to support the operation of the network device 600. Examples of these data include: any computer program for operating on the network device 600.

[0398] The method disclosed in the above embodiments of the present application can be applied to the second processor 602 or implemented by the second processor 602. The second processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method can be completed by the integrated logic circuit in the hardware of the second processor 602 or by instructions in software form. The above-mentioned second processor 602 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 602 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the second memory 603. The second processor 602 reads the information in the second memory 603 and combines its hardware to complete the steps of the foregoing method.

[0399] In an exemplary embodiment, the network device 600 can be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, Microprocessors, or other electronic components for executing the foregoing method.

[0400] It can be understood that the memories (the first memory 503 and the second memory 603) in the embodiments of the present application can be volatile memories or non-volatile memories, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), a ferromagnetic random access memory (FRAM, ferromagnetic random access memory), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM, Compact Disc Read-Only Memory); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM, Static Random Access Memory), a synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), a dynamic random access memory (DRAM, Dynamic Random Access Memory), a synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), a double data rate synchronous dynamic random access memory (DDR SDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), an enhanced synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), a synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), a direct rambus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0401] In an exemplary embodiment, the embodiments of this application also provide a storage medium, specifically a computer storage medium, and more specifically a computer-readable storage medium. For example, it includes a first memory 503 that stores a computer program, and the above computer program can be executed by a first processor 502 of the terminal 500 to complete the steps described in the foregoing terminal-side method. Another example is a second memory 603 that stores a computer program, and the above computer program can be executed by a second processor 602 of the network device 600 to complete the steps described in the foregoing network device-side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0402] It should be noted that: "first", "second", etc. are used to distinguish similar objects and do not necessarily describe a specific order or sequence.

[0403] In addition, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0404] The above is only a preferred embodiment of this application and is not intended to limit the protection scope of this application.

Claims

1. A cell conversion method, characterized in that, Applied to a terminal, the method includes at least one of the following: Perform cell handover, and the cell handover time includes at least an interruption time; Receive first information sent by a network device; wherein, the first information includes at least one of the following: An indication information for the terminal to preferentially perform serving cell synchronization; An indication information for the terminal to preferentially activate the transmission configuration indication state (TCI state) of a neighbor cell; A cell handover command.

2. The method according to claim 1, wherein The method further includes: When the first information indicates that the terminal preferentially performs serving cell synchronization, preferentially receive the synchronization signal block (SSB) of the serving cell.

3. The method according to claim 1, wherein The method further includes at least one of the following: When the first information indicates that the terminal preferentially activates the TCI state of a neighbor cell, preferentially receive the SSB of the neighbor cell; When switching to a neighbor cell, send data according to the transmission time metric of the corresponding neighbor cell.

4. The method according to claim 1, wherein The transmission time error of the first transmission in the target cell is less than or equal to a first threshold; and / or After receiving the cell handover command, the transmission in the target cell meets the transmission time error requirement.

5. The method according to claim 1, wherein When at least one of the following conditions is met, the transmission time error of the first transmission in the target cell is less than or equal to the first threshold: There is at least one SSB in the first time; The measurement time of the layer 1 (L1) reference signal received power (RSRP) does not exceed 160 milliseconds.

6. The method according to claim 2, characterized in that The method further includes one of the following: When the period of the SSB of the serving cell is less than a set duration and the reception of the SSB of the serving cell is completed, receive the SSB of the neighbor cell; When the sum of the period of the SSB of the serving cell and the period of the SSB of the neighbor cell is less than or equal to the set duration and the reception of the SSB of the serving cell is completed, receive the SSB of the neighbor cell; When the period of the SSB of the serving cell is equal to the set duration, do not receive the SSB of the neighbor cell.

7. The method according to claim 3, wherein The method further includes one of the following: When the period of the SSB of the neighbor cell is less than a set duration and the reception of the SSB of the neighbor cell is completed, receive the SSB of the serving cell; When the sum of the period of the SSB of the neighbor cell and the period of the SSB of the serving cell is less than or equal to the set duration and the reception of the SSB of the neighbor cell is completed, receive the SSB of the serving cell; When the period of the SSB of the neighbor cell is equal to the set duration, do not receive the SSB of the serving cell.

8. The method according to any one of claims 1, 3 to 6, characterized in that The method further includes: Receive second information sent by the network device; wherein The second information indicates the priority of a first neighbor cell or multiple second neighbor cells; the first neighbor cell represents a neighbor cell for preferentially activating the TCI state; the second neighbor cell represents a neighbor cell that needs to activate the TCI state.

9. The method according to claim 8, wherein The method further includes: According to the second information, preferentially receive the SSB of the first neighbor cell or the second neighbor cell with a high priority.

10. The method according to any one of claims 1 to 7 and 9, characterized in that The method further includes: Receive third information sent by the network device, wherein The third information indicates at least one of the following: Whether to relax the transmission time metric; The relaxation ratio of the transmission time metric, and the relaxation ratio of the transmission time metric is determined according to the number of cells and / or the period of the SSB; Identity / index of the cell that relaxes the transmission time metric.

11. The method according to claim 10, wherein The method further includes: Receiving fourth information sent by the network device; wherein, the fourth information indicates that the terminal relaxes the transmission time metric of the serving cell or relaxes the transmission time metric of the neighboring cell.

12. The method according to any one of claims 1 to 7, 9, and 11, characterized in that, The method further includes: Relaxing the transmission time metric of the serving cell when the period of the SSB of the serving cell is equal to a set duration or the period of the SSB of each cell is the set duration.

13. The method according to claim 1, characterized in that, The interruption time includes at least one of the validity check time of the radio resource control (RRC) configuration, the terminal processing time, the time to obtain time information, the SSB processing time, and the interruption uncertainty.

14. The method according to claim 1 or 13, characterized in that, The interruption time includes at least the SSB processing time, and the value of the SSB processing time is 0 when at least one of the following conditions is met: The target TCI state is in the active TCI state list of the candidate cell; The target TCI state is in the active TCI state list of the serving cell; The L1-RSRP measurement time does not exceed 160 milliseconds; The time between receiving the media access control (MAC) control element (CE) and the layer 1 or layer 2 triggered mobility (LTM) cell transition command is equal to or greater than a second threshold, where the MAC CE is the MAC CE that activates the target TCI state.

15. The method according to claim 1 or 13, characterized in that The interruption time includes at least the time to obtain time information, and the value of the time to obtain time information is 0 when at least one of the following conditions is met: The target TCI state is in the active TCI state list of the candidate cell; The target TCI state is in the active TCI state list of the serving cell; The L1-RSRP measurement time does not exceed 160 milliseconds; The time between receiving the MAC CE and the LTM cell transition command is equal to or greater than a second threshold, where the MAC CE is the MAC CE that activates the target TCI state.

16. The method according to claim 14 or 15, characterized in that The second threshold includes at least the hybrid automatic repeat request (HARQ) time and the time from when the MAC CE command is decoded to the transmission of the first SSB.

17. A cell conversion method, characterized in that, Applied to a network device, the method includes: Sending first information to the terminal; wherein, the first information includes at least one of the following: Indication information for the terminal to preferentially synchronize with the serving cell; Indication information for preferentially activating the TCI state of the neighboring cell; Cell transition command.

18. The method according to claim 17, wherein The method further includes: Sending second information to the terminal; wherein, The second information indicates the priority of the first neighboring cell or multiple second neighboring cells; the first neighboring cell represents the neighboring cell for preferentially activating the TCI state; the second neighboring cell represents the neighboring cell that needs to activate the TCI state.

19. The method according to claim 18, characterized in that, The method further includes: Determining the priority of the second neighboring cell according to at least one of the following: The layer 3 (L3) measurement result of the second neighboring cell; The load of the second neighboring cell; The capacity of the second neighboring cell; The second neighboring cell for which it is desired that the terminal performs an L1 handover; The cell type of the second neighboring cell, and the cell type is a co-frequency cell or an inter-frequency cell.

20. The method according to any one of claims 17 to 19, characterized in that, The method further includes: Sending third information to the terminal, wherein, The third information indicates at least one of the following: Whether to relax the transmission time indicator; The relaxation ratio of the transmission time indicator, where the relaxation ratio of the transmission time indicator is determined according to the number of cells and / or the period of the SSB; The identifier / index of the cell for which the transmission time indicator is relaxed.

21. The method according to claim 20, wherein The method further includes: Sending fourth information to the terminal; wherein, the fourth information indicates that the terminal relaxes the transmission time indicator of the serving cell or relaxes the transmission time of the neighboring cell.

22. A cell conversion device, characterized in that, including: A processing unit for performing cell conversion, where the cell conversion time includes at least an interruption time; and / or A first receiving unit for receiving first information sent by a network device; wherein, the first information includes at least one of the following: An indication information for the terminal to prioritize serving cell synchronization; An indication information for the terminal to prioritize activating the TCI state of the neighboring cell; A cell conversion command.

23. A cell conversion device, characterized in that, including: A first sending unit for sending first information to the terminal; wherein, the first information includes at least one of the following: An indication information for the terminal to prioritize serving cell synchronization; An indication information for prioritizing activating the TCI state of the neighboring cell; A cell conversion command.

24. A terminal, characterized in that, including: A first processor and a first communication interface; wherein, The first processor is used for performing cell conversion, and the cell conversion time includes at least an interruption time; The first communication interface is used for receiving first information sent by a network device; wherein, the first information includes at least one of the following: An indication information for the terminal to prioritize serving cell synchronization; An indication information for the terminal to prioritize activating the TCI state of the neighboring cell; A cell conversion command.

25. A network device, characterized in that, including: A second processor and a second communication interface; wherein, The second communication interface is used for sending first information to the terminal; wherein, the first information includes at least one of the following: An indication information for the terminal to prioritize serving cell synchronization; An indication information for prioritizing activating the TCI state of the neighboring cell; A cell conversion command.

26. A terminal, characterized in that, including a first processor and a first memory for storing a computer program that can run on the first processor, wherein, when the first processor is used to run the computer program, it executes the steps of the method according to any one of claims 1 to 16.

27. A network device, characterized in that, including a second processor and a second memory for storing a computer program that can run on the second processor, wherein, when the second processor is used to run the computer program, it executes the steps of the method according to any one of claims 17 to 21.

28. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 16, or implements the steps of the method according to any one of claims 17 to 21.

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