A method and device for activating a cell

Abstract

The embodiments of the present application provide a method and device for activating a cell, which relates to the field of communications, and can obtain the timing and beam information of a cell to be activated through a known cell or an activated cell, saving the cell search and beam measurement time during the activation process, and realizing rapid activation. The specific scheme is: the communication device determines a service cell that can synchronize information with the SCell to be activated, and the service cell is an activated cell or a known cell; the communication device determines the first SSB in the SSB sent by the SCell to be activated, and the first SSB corresponds to the second SSB sent by the service cell; the communication device activates the SCell to be activated based on the timing information and beam information of the second SSB and based on the first SSB sent by the SCell to be activated. The embodiments of the present application are used in the process of activating a cell.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular, to a method and device for activating a cell. Background Art

[0002] In the fifth generation mobile communication technology (5G) system, after the terminal device enters the connected state, it can communicate with the source network device through multiple component carriers at the same time. The source network device will specify a primary component carrier (PCC) for the terminal device through explicit configuration or according to the protocol agreement, and the other component carriers are called secondary component carriers (SCC). Among them, the service cell on the PCC is called the primary cell (PCell), and the service cell on the SCC is called the secondary cell (SCell).

[0003] Among them, the time requirement for the terminal device to complete the SCell activation is related to whether the terminal device knows or does not know the SCell. The terminal device determines that the SCell is a known cell if: within a period of time before the terminal device receives the activation command from the network device, the terminal device has performed radio resource management (RRM) measurements for the SCell and reported it to the network device, otherwise the SCell is considered to be an unknown cell. When a terminal device activates an unknown SCell, it is generally necessary to perform a cell search first to obtain the timing information and beam information of the SCell to be activated. In the FR2 band, when there is an activated service cell, or an unactivated but known SCell, the terminal device can directly use the timing information and beam information of the activated service cell or the known SCell when activating the SCell without performing a cell search, so as to achieve rapid activation of the SCell to be activated. However, the prerequisite for the terminal device to use the timing information or beam information of other service cells is to ensure that all service cells in the FR2 band are synchronized, co-located and have the same transmission beam on the same orthogonal frequency division multiplexing (OFDM) symbol.

[0004] However, even if multiple cells have the same transmission beam on the same SSB, there is still a situation where the SSB formats (patterns) of multiple cells are different (SSB pattern: a set of SSBs sent by a cell, represented by a bit sequence (ssb-PositionsInBurst) corresponding to the identifiers of all SSBs sent by the cell in the same NR standard; the same SSB pattern means that two cells send SSBs with the same identifier). This will result in that if the terminal device determines to perform an activation action based on the beam information and timing information of a certain SSB of an activated or known cell, the cell to be activated does not send an SSB at the symbol position of the SSB, and the terminal device cannot determine which SSB should be used for activation on the SCell to be activated. Summary of the invention

[0005] The embodiments of the present application provide a method and device for activating a cell, which obtains the timing and beam information of a cell to be activated through an activated cell or an activated cell, thereby saving the cell search and beam measurement time during the activation process and achieving rapid activation.

[0006] In order to achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0007] In a first aspect, a method for activating a cell is provided, including: a communication device determines a serving cell that can synchronize information with a secondary cell SCell to be activated, the serving cell being an activated cell or a known cell; the communication device determines a first SSB in an SSB sent by the SCell to be activated, the first SSB corresponding to a second SSB sent by the serving cell; the communication device activates the SCell to be activated based on the timing information and beam information of the second SSB and the first SSB sent by the SCell to be activated. The communication device may be, for example, a UE, and the network device may be a base station.

[0008] In an embodiment of the present application, the UE can determine the service cell that can perform information synchronization with the SCell to be activated according to the standard pre-definition or network indication, and is not limited to the service cell in the FR2 band, that is, the service cells in the FR1 band can also be co-located, time synchronized, and have the same transmission beam on the same symbol, and then the service cell that has the same site address, time synchronization, and the same transmission beam on the same symbol as the SCell to be activated in the FR1 band can be determined.

[0009] When the SSB pattern of the SCell to be activated is different from that of the activated service cell or the unactivated but known service cell, the UE can determine the first SSB in the SSB sent by the SCell to be activated, the first SSB being the SSB corresponding to the second SSB with the best transmission beam on the known or activated service cell, and then the UE can determine the timing information and beam information of the first SSB based on the timing information and beam information of the second SSB, so as to receive the first SSB of the SCell to be activated according to the timing information and beam information of the first SSB, so as to ensure that the UE can receive the first SSB with accurate reception timing and reception beam, and complete the activation of the SCell to be activated. In other words, regardless of whether the SSB pattern actually used on each service cell is the same, the UE can always determine the first SSB corresponding to the second SSB with the best transmission beam in the SSB of the service cell on the SCell to be activated, so as to save the cell search and beam measurement time in the cell activation process, and realize rapid activation of the cell.

[0010] In one possible design, the communication device determines that the service cell that can perform information synchronization with the secondary cell to be activated SCell includes: the communication device determines that multiple service cells on the same intra-band continuous carrier aggregation CA as the SCell to be activated are service cells that can perform information synchronization with the SCell to be activated; or, the communication device determines that multiple service cells belonging to the same timing advance TA group as the SCell to be activated are service cells that can perform information synchronization with the SCell to be activated.

[0011] That is, the present application is not limited to the assumption that there are multiple serving cells in the FR2 band with a common site, time synchronization, and the same transmission beam on the same symbol, but such an assumption may also exist in the FR1 band. This assumption may be predefined in the standard predefined, and rapid activation of cells in the FR1 band may be achieved.

[0012] In one possible design, the communication device determines a service cell that can perform information synchronization with the secondary cell to be activated SCell, including: the communication device receives a radio resource control RRC message sent by a network device, the RRC message is used to indicate that the SCell to be activated is a secondary cell of the communication device, and the RRC message includes first indication information, and the first indication information is used to indicate a service cell that can perform information synchronization with the SCell to be activated.

[0013] In other words, the first indication information is used to indicate the index of other serving cells that can synchronize information with the SCell to be activated. In this way, when activating the SCell, the timing information and beam information of other serving cells can be referred to, so as to realize fast activation of the SCell and omit the cell search process.

[0014] In one possible design, the communication device determines a service cell that can perform information synchronization with the secondary cell to be activated SCell, including: the communication device receives a radio resource control RRC message sent by a network device, the RRC message includes second indication information, and the second indication information is used to indicate that the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group.

[0015] In other words, the second indication information is used to indicate whether the UE can assume that the SCell to be activated can be synchronized with multiple serving cells in the same frequency band or the same TA group. If so, the UE can refer to the timing information and beam information of multiple serving cells in the same frequency band or the same TA group as the SCell to be activated to achieve rapid activation of the cell, and omit the search process for the SCell.

[0016] In one possible design, the communication device determines a first SSB among the SSBs sent by the SCell to be activated, and the first SSB corresponds to a second SSB sent by the serving cell, including: the communication device determines that the first SSB among the SSBs sent by the SCell to be activated is an SSB having the same identifier as the second SSB; wherein, when the first SSB corresponds to the second SSB, the first SSB and the second SSB have the same transmission beam.

[0017] Among them, the second SSB is the SSB with the best transmission beam among the SSBs sent by the serving cell, or the SB with the best signal quality. When the SSB pattern of the SCell to be activated is different from that of the activated serving cell or the unactivated but known serving cell, the UE can determine the first SSB in the SSB sent by the SCell to be activated, and the first SSB is the SSB corresponding to the second SSB with the best transmission beam on the known or activated serving cell, and the correspondence can be understood as the same SSB identifier. Then, the UE can determine the timing information and beam information of the first SSB based on the timing information and beam information of the second SSB, so as to receive the first SSB of the SCell to be activated according to the timing information and beam information of the first SSB, so as to ensure that the UE can receive the first SSB with accurate reception timing and reception beam, and complete the activation of the SCell to be activated.

[0018] In one possible design, when the SCell to be activated and the serving cell are serving cells within the same frequency band, the SCell to be activated and the serving cell have the same SSB format; or, when the SCell to be activated and the serving cell can perform information synchronization, the SCell to be activated and the serving cell have the same SSB format; wherein, two service cells have the same SSB format if: the two service cells send SSBs with the same identifier.

[0019] Among them, the two service cells have the same SSB format (pattern): the two service cells send SSBs with the same index. Or it can be understood that the same SSB format, that is, the sb-PositionsInBurst of the two service cells is the same. In this way, when the UE wants to activate the SCell, if the SSB pattern of the SCell to be activated is different from that of the activated service cell or the unactivated but known service cell, the UE can determine the first SSB in the SSB sent by the SCell to be activated, and the first SSB is the SSB corresponding to the second SSB with the best transmission beam on the known or activated service cell. Then, the UE can determine the timing information and beam information of the first SSB based on the timing information and beam information of the second SSB, so as to receive the first SSB of the SCell to be activated according to the timing information and beam information of the first SSB, so as to ensure that the UE can receive the first SSB with accurate reception timing and reception beam, and complete the activation of the SCell to be activated.

[0020] In one possible design, the communication device determines the first SSB in the SSB sent by the SCell to be activated, and the correspondence between the first SSB and the second SSB sent by the serving cell includes: the communication device receives the third indication information sent by the network device; wherein the third indication information is used to indicate the identifier of the first SSB sent by the SCell to be activated, and the transmission beam of the first SSB is the same as the transmission beam of the second SSB sent by the serving cell; in this case, the base station knows the identifier of the second SSB, that is, it knows the SSB index with the optimal transmission beam in the SSB of the serving cell, so the base station can directly indicate the identifier of the first SSB to the UE.

[0021] Alternatively, the third indication information is used to indicate the correspondence between the SSB sent by the SCell to be activated and the SSB sent by the serving cell, so that the communication device determines the identifier of the first SSB based on the correspondence and the identifier of the second SSB. In this case, the base station does not know the identifier of the second SSB, so it tells the UE the correspondence between all SSBs on the SCell and all SSBs on the activated or known cells, and the UE determines the identifier of the first SSB based on the identifier of the second SSB and the correspondence. In this way, the timing information and beam information of the first SSB can be determined based on the timing information and beam information of the second SSB, so as to receive the first SSB of the SCell to be activated based on the timing information and beam information of the first SSB, so as to ensure that the UE can receive the first SSB with accurate reception timing and reception beam, and complete the activation of the SCell to be activated.

[0022] In one possible design, the communication device sends a first SSB based on the SCell to be activated according to the timing information and beam information of the second SSB, and activating the SCell to be activated includes: the communication device determines the timing information of the first SSB according to the timing information of the second SSB; the communication device determines the beam information of the first SSB according to the beam information of the second SSB; the communication device receives the first SSB sent by the SCell to be activated according to the timing information and beam information of the first SSB, and activates the SCell to be activated.

[0023] In this way, when the SSB pattern of the SCell to be activated is different from that of the activated service cell or the unactivated but known service cell, the UE can determine the timing information and beam information of the first SSB based on the timing information and beam information of the second SSB, and receive the first SSB of the SCell to be activated according to the timing information and beam information of the first SSB, so as to ensure that the UE can receive the first SSB with accurate reception timing and reception beam, and complete the activation of the SCell to be activated.

[0024] In one possible design, information synchronization includes: co-location between serving cells, time synchronization, and having the same transmission beam on the same symbol.

[0025] In a second aspect, a method for activating a cell is provided, including: a network device indicates to a communication device a serving cell that can synchronize information with a secondary cell SCell to be activated, the serving cell being an activated cell or a known cell; and / or the network device instructs the communication device to determine a first SSB in the SSBs sent by the SCell to be activated, the first SSB corresponding to a second SSB in the serving cell; the network device sends the first SSB and the second SSB to the communication device. The network device may be a base station, and the communication device may be a UE.

[0026] In the present application, the assumption that information synchronization can be performed is not limited to the FR2 band, but can also be applied to the FR1 band. When the UE determines the service cell that can perform information synchronization with the SCell to be activated according to the network indication, the UE can determine the timing information and beam information of the SCell to be activated according to the timing information and beam information of the service cell. At the same time, when the SSB pattern of the SCell to be activated is different from that of the activated service cell or the unactivated but known service cell, the UE can determine the first SSB in the SSB sent by the SCell to be activated, and the first SSB is the SSB corresponding to the second SSB with the best transmission beam on the known or activated service cell. Then, the UE can determine the timing information and beam information of the first SSB based on the timing information and beam information of the second SSB, so as to receive the first SSB of the SCell to be activated according to the timing information and beam information of the first SSB, so as to ensure that the UE can receive the first SSB with accurate reception timing and reception beam, complete the activation of the SCell to be activated, omit the cell search process for the SCell to be activated, and realize rapid cell activation.

[0027] In one possible design, the network device indicates to the communication device a service cell that can perform information synchronization with the secondary cell to be activated SCell, including: the network device sends a radio resource control RRC message to the communication device, the RRC message is used to indicate that the SCell to be activated is the secondary cell of the communication device, the RRC message includes first indication information, and the first indication information is used to indicate the service cell that can perform information synchronization with the SCell to be activated.

[0028] That is to say, the base station can configure the SCell for the UE and, at the same time, notify the UE of the serving cell that can synchronize information with the SCell by means of network indication, so that when the UE wants to activate the SCell, it can quickly activate the SCell according to the synchronization information with the serving cell.

[0029] In one possible design, the network device indicates to the communication device a service cell that can perform information synchronization with the secondary cell SCell to be activated, including: the network device sends a radio resource control RRC message to the communication device, the RRC message includes second indication information, and the second indication information is used to indicate that the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group.

[0030] That is to say, the base station can configure the SCell for the UE and, at the same time, notify the UE of the serving cell that can synchronize information with the SCell by means of network indication, so that when the UE wants to activate the SCell, it can quickly activate the SCell according to the synchronization information with the serving cell.

[0031] In one possible design, the network device instructs the communication device to determine the first SSB in the SSB sent by the SCell to be activated, including: the network device sends third indication information to the communication device; wherein the third indication information is used to indicate the identifier of the first SSB sent by the SCell to be activated, and the transmission beam of the first SSB is the same as the transmission beam of the second SSB sent by the serving cell; in this case, the base station knows the identifier of the second SSB, that is, it knows the SSBindex with the optimal transmission beam in the SSB of the serving cell, so the base station can directly indicate the identifier of the first SSB to the UE.

[0032] Alternatively, the third indication information is used to indicate the correspondence between the SSB sent by the SCell to be activated and the SSB sent by the serving cell, so that the communication device determines the identifier of the first SSB based on the correspondence and the identifier of the second SSB. In this case, the base station does not know the identifier of the second SSB, so it tells the UE the correspondence between all SSBs on the SCell and all SSBs on the activated or known cells, and the UE determines the identifier of the first SSB based on the identifier of the second SSB and the correspondence. In this way, the timing information and beam information of the first SSB can be determined based on the timing information and beam information of the second SSB, so as to receive the first SSB of the SCell to be activated based on the timing information and beam information of the first SSB, so as to ensure that the UE can receive the first SSB with accurate reception timing and reception beam, and complete the activation of the SCell to be activated.

[0033] When the first SSB corresponds to the second SSB, the first SSB and the second SSB have the same transmission beam.

[0034] The second SSB is the SSB with the best transmission beam among the SSBs sent by the serving cell, or the SB with the best signal quality. When the SSB pattern of the SCell to be activated is different from that of the activated serving cell or the unactivated but known serving cell, the UE can determine the first SSB among the SSBs sent by the SCell to be activated, and the first SSB is the SSB corresponding to the second SSB with the best transmission beam on the known or activated serving cell.

[0035] In one possible design, information synchronization includes: co-location between serving cells, time synchronization, and having the same transmission beam on the same symbol.

[0036] According to a third aspect, a method for measuring a cell is provided, the method comprising: a communication device receives configuration information sent by a network device, the configuration information is used to configure a measurement target, the measurement target is a first frequency point, the configuration information comprises synchronization information, the synchronization information comprises a second frequency point having a synchronization relationship with the measurement target, a first service cell on the second frequency point, a synchronization accuracy of the measurement target, or at least one of a neighboring cell list; the communication device measures the cell on the measurement target according to the synchronization information.

[0037] Therefore, in the embodiment of the present application, when configuring the target frequency, the synchronization information in the configuration information can indicate the synchronization assumption between cells across MOs. In this way, when the UE performs inter-frequency measurement, the SSB index of the neighboring cell on the non-service frequency can be derived through the SSB index of the serving cell to save the time of reading the SSB index when measuring the target frequency. When the synchronization information also indicates the accuracy of the cell synchronization assumption within or between MOs, if the cell of the network on the first frequency has a synchronization accuracy that meets the preset threshold, the UE can perform measurements on the first frequency by using the timing information of the first serving cell of the second frequency or the known cell on the second frequency, or the timing information of the service cell to be measured on the first frequency, to save the cell search time for measuring the first frequency.

[0038] In a possible design, if the synchronization information includes synchronization accuracy, the communication device measures the cell on the measurement target according to the synchronization information, including: if the synchronization accuracy is less than or equal to a preset first threshold, the communication device measures the cell on the first frequency according to the timing information of the serving cell on the first frequency or the timing information of the known cell in the first frequency. The preset first threshold may be a threshold of synchronization accuracy at the intra-band CA MRTD level, for example, the preset first threshold may be 3us (FR1) or 260ns (FR2).

[0039] Therefore, when the UE measures a cell at a target frequency, the cell search process can be omitted and the measurement can be performed directly according to the obtained timing information.

[0040] In a possible design, if the synchronization information includes synchronization accuracy and a neighboring cell list, the communication device measures the cell on the measurement target according to the synchronization information, including: if the synchronization accuracy is less than or equal to a preset first threshold, the communication device measures multiple neighboring cells on the first frequency point and in the neighboring cell list according to the timing information of the serving cell on the first frequency point or the timing information of the known cell on the first frequency point. The preset first threshold may be a threshold of synchronization accuracy at the intra-bandCA MRTD level, for example, the preset first threshold may be 3us (FR1) or 260ns (FR2).

[0041] Similarly, when measuring a cell at a target frequency, the UE may omit the cell search process and directly perform measurement based on the timing information of a serving cell at the first frequency or the timing information of a known cell at the first frequency.

[0042] In a possible design, if the synchronization information includes the second frequency point or the first service cell, and includes synchronization accuracy, and the synchronization accuracy is less than or equal to a preset second threshold, the communication device measures the cell on the measurement target according to the synchronization information, including: the communication device determines the SSB identifier of the service cell to be measured on the first frequency point according to the SSB identifier of the known cell on the first service cell or the second frequency point. The preset second threshold may be a threshold of the synchronization accuracy at the SSB level, for example, the preset second threshold may be the length of 2 SSB symbols.

[0043] That is, the UE can determine the index of the SSB according to the symbol position of the detected SSB on the cell to be measured on the synchronization information source cell. This can save the time of reading the SSB index when measuring the cell of the first frequency point, thereby saving the time of measuring the cell of the first frequency point.

[0044] In one possible design, if the synchronization information includes the second frequency point or the first service cell, and includes the synchronization accuracy, and the synchronization accuracy is less than or equal to the preset first threshold, the communication device measures the cell on the measurement target according to the synchronization information, including: the communication device determines the timing information of the service cell to be measured on the first frequency point according to the timing information of the first service cell or the known cell on the second frequency point, so as to measure the cell on the first frequency point. Among them, the preset first threshold can be the threshold of the synchronization accuracy of the intra-band CA MRTD level, for example, the preset first threshold can be 3us (FR1) or 260ns (FR2). The accuracy of the preset first threshold is higher than the accuracy of the preset second threshold, that is, the preset first threshold is less than the preset second threshold. Therefore, while saving the time of cell search, the time of SSB index reading is also saved.

[0045] In this way, when measuring the cells on the first frequency point, the UE can save the time of searching for the cells on the first frequency point, and directly measure the cells on the first frequency point according to the timing information of the serving cell on the first frequency point, or the timing information of the known cells in the first frequency point, to obtain the RSRP / RSRQ / SINR of the cells on the first frequency point.

[0046] In a fourth aspect, a method for cell measurement is provided, including: a network device determines configuration information to be sent to a communication device; the network device sends the configuration information to the communication device; wherein the configuration information is used to configure a measurement target, the measurement target is a first frequency point, and the configuration information includes synchronization information, the synchronization information includes a second frequency point that has a synchronization relationship with the measurement target, a first service cell on the second frequency point, the synchronization accuracy between the second frequency point or the first service cell and the measurement target, or at least one in a neighboring cell list.

[0047] Therefore, in the embodiment of the present application, when configuring the target frequency, the synchronization information in the configuration information can indicate the synchronization assumption between cells across MOs. In this way, when the UE performs inter-frequency measurement, the SSB index of the neighboring cell on the non-service frequency can be derived through the SSB index of the serving cell to save the time of reading the SSB index when measuring the target frequency. When the synchronization information also indicates the accuracy of the cell synchronization assumption within or between MOs, if the cell of the network on the first frequency has a synchronization accuracy that meets the preset threshold, the UE can perform measurements on the first frequency by using the timing information of the first serving cell of the second frequency or the known cell on the second frequency, or the timing information of the service cell to be measured on the first frequency, to save the cell search time for measuring the first frequency.

[0048] In a fifth aspect, a communication device is provided, comprising a processor, the processor being connected to a memory, the memory being used to store a computer program, and the processor being used to execute the computer program stored in the memory, so that the device executes the method described in the first aspect and any possible design of the first aspect.

[0049] In a sixth aspect, a communication device is provided, comprising a processor, the processor being connected to a memory, the memory being used to store a computer program, and the processor being used to execute the computer program stored in the memory, so that the device executes the method described in the third aspect and any possible design of the third aspect.

[0050] In the seventh aspect, a network device is provided, comprising a processor, the processor being connected to a memory, the memory being used to store a computer program, and the processor being used to execute the computer program stored in the memory, so that the device executes the method described in the second aspect and any possible design of the second aspect.

[0051] In an eighth aspect, a network device is provided, comprising a processor, the processor being connected to a memory, the memory being used to store a computer program, and the processor being used to execute the computer program stored in the memory, so that the device executes the method described in the fourth aspect.

[0052] In a ninth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method described in the first aspect and any possible design of the first aspect is implemented.

[0053] In a tenth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method described in the third aspect and any possible design of the third aspect is implemented.

[0054] In an eleventh aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method described in the second aspect and any possible design of the second aspect is implemented.

[0055] In a twelfth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method described in the fourth aspect is implemented.

[0056] In the thirteenth aspect, a communication system is provided, comprising the communication device described in the fifth aspect and the network equipment described in the seventh aspect, or comprising the communication device described in the sixth aspect and the network equipment described in the eighth aspect.

[0057] In a fourteenth aspect, a communication device is provided, including: a processing module, used to determine a service cell that can synchronize information with a secondary cell to be activated SCell, the service cell being an activated cell or a known cell; the processing module, further used to determine a first SSB in the SSBs sent by the SCell to be activated, the first SSB corresponding to a second SSB sent by the service cell; the transceiver module, further used to receive the first SSB from the SCell to be activated according to the timing information and beam information of the second SSB, and activate the SCell to be activated. The beneficial effects of each design on the communication device side can be referred to the first aspect and the beneficial effects of each design of the first aspect.

[0058] In one possible design, the processing module is used to: determine a service cell on the same intra-band continuous carrier aggregation CA as the SCell to be activated in the frequency band FR1, as a service cell that can perform information synchronization with the SCell to be activated; or determine a service cell that belongs to the same timing advance TA group as the SCell to be activated, as a service cell that can perform information synchronization with the SCell to be activated.

[0059] In one possible design, the transceiver module is used to: receive a wireless resource control RRC message sent by a network device, the RRC message is used to indicate that the SCell to be activated is a secondary cell of the communication device, the RRC message includes first indication information, and the first indication information is used to indicate a service cell that can perform information synchronization with the SCell to be activated.

[0060] In one possible design, the transceiver module is used to: receive a wireless resource control RRC message sent by a network device, the RRC message includes second indication information, and the second indication information is used to indicate that the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group.

[0061] In one possible design, the processing module is used to: determine that the first SSB among the SSBs sent by the SCell to be activated is an SSB whose identifier is the same as the identifier of the second SSB; wherein the first SSB and the second SSB have the same transmission beam.

[0062] In one possible design, when the SCell to be activated and the serving cell are serving cells within the same frequency band, the SCell to be activated and the serving cell have the same SSB format; or, when the SCell to be activated and the serving cell can perform information synchronization, the SCell to be activated and the serving cell have the same SSB format; wherein, two service cells have the same SSB format if: the two service cells send SSBs with the same identifier.

[0063] In one possible design, the transceiver module is used to: receive third indication information sent by a network device; wherein the third indication information is used to indicate the identifier of a first SSB sent by the SCell to be activated, and the transmission beam of the first SSB is the same as the transmission beam of a second SSB sent by a serving cell; or, the third indication information is used to indicate the correspondence between the SSB sent by the SCell to be activated and the SSB sent by the serving cell, so that the communication device determines the identifier of the first SSB based on the correspondence and the identifier of the second SSB.

[0064] In one possible design, the processing module is used to: determine the timing information of the first SSB according to the timing information of the second SSB; determine the beam information of the first SSB according to the beam information of the second SSB; the transceiver module is used to: receive the first SSB sent by the SCell to be activated, and activate the SCell to be activated according to the timing information and beam information of the first SSB.

[0065] In one possible design, information synchronization includes: co-location between serving cells, time synchronization, and having the same transmission beam on the same symbol.

[0066] In a fifteenth aspect, a network device is provided, including: a transceiver module, used to indicate to a communication device a service cell that can synchronize information with a secondary cell SCell to be activated, the service cell being an activated cell or a known cell; and / or, a transceiver module, used to indicate to the communication device to determine a first SSB in the SSBs sent by the SCell to be activated, the first SSB corresponding to a second SSB in the service cell; the transceiver module is further used to send the first SSB and the second SSB to the communication device. The beneficial effects of each design on the network device side can be referred to the second aspect and the beneficial effects of each design of the second aspect.

[0067] In one possible design, the transceiver module is used to: send a wireless resource control RRC message to a communication device, the RRC message is used to indicate that the SCell to be activated is a secondary cell of the communication device, the RRC message includes first indication information, and the first indication information is used to indicate a service cell that can perform information synchronization with the SCell to be activated.

[0068] In one possible design, the transceiver module is used to: send a wireless resource control RRC message to a communication device, the RRC message includes second indication information, and the second indication information is used to indicate that the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group.

[0069] In one possible design, the transceiver module is used to: send third indication information to the communication device; wherein the third indication information is used to indicate the identifier of the first SSB sent by the SCell to be activated, and the transmission beam of the first SSB is the same as the transmission beam of the second SSB sent by the serving cell; or, the third indication information is used to indicate the correspondence between the SSB sent by the SCell to be activated and the SSB sent by the serving cell, so that the communication device determines the identifier of the first SSB based on the corresponding relationship and the identifier of the second SSB.

[0070] In one possible design, information synchronization includes: co-location between serving cells, time synchronization, and having the same transmission beam on the same symbol.

[0071] In the sixteenth aspect, a communication system is provided, comprising the communication device of the fourteenth aspect and the network device of the fifteenth aspect. In the seventeenth aspect, a communication device is provided, comprising: a transceiver module for receiving configuration information sent by the network device, the configuration information is used to configure the measurement target, the measurement target is a first frequency point, the configuration information includes synchronization information, the synchronization information includes a second frequency point that has a synchronization relationship with the measurement target, the first service cell on the second frequency point, the synchronization accuracy of the measurement target, or at least one of the neighboring cell list; a processing module for measuring the cell on the measurement target according to the synchronization information. The beneficial effects on the communication device side of the seventeenth aspect can be found in the third aspect.

[0072] In one possible design, if the synchronization information includes synchronization accuracy, the processing module is used to: if the synchronization accuracy is less than or equal to a preset first threshold, measure the cell on the first frequency point according to the timing information of the serving cell on the first frequency point or the timing information of the known cells in the first frequency point.

[0073] In one possible design, if the synchronization information includes synchronization accuracy and a neighboring cell list, the processing module is used to: if the synchronization accuracy is less than or equal to a preset first threshold, measure multiple neighboring cells on the first frequency point and in the neighboring cell list based on the timing information of the serving cell on the first frequency point or the timing information of the known cell on the first frequency point.

[0074] In one possible design, if the synchronization information includes the second frequency point or the first service cell, and includes synchronization accuracy, and the synchronization accuracy is less than or equal to a preset second threshold, the processing module is used to: determine the SSB identifier of the service cell to be tested on the first frequency point according to the SSB identifier of the known cell on the first service cell or the second frequency point. The preset second threshold may be a threshold of the synchronization accuracy of the SSB level, for example, the preset second threshold may be the length of 2 SSB symbols.

[0075] In one possible design, if the synchronization information includes the second frequency point or the first service cell, and includes synchronization accuracy, and the synchronization accuracy is less than or equal to a preset first threshold, the processing module is used to: determine the timing information of the service cell to be measured on the first frequency point based on the timing information of the first service cell or the known cell on the second frequency point, so as to measure the cell on the first frequency point.

[0076] In an eighteenth aspect, a network device is provided, comprising: a processing module, configured to determine configuration information to be sent to a communication device; a transceiver module, configured to send configuration information to the communication device; wherein the configuration information is used to configure a measurement target, the measurement target is a first frequency point, the configuration information includes synchronization information, and the synchronization information includes a second frequency point having a synchronization relationship with the measurement target, a first service cell on the second frequency point, a synchronization accuracy between the second frequency point or the first service cell and the measurement target, or at least one of a neighboring cell list. The beneficial effects of the communication device side of the eighteenth aspect can be referred to the fourth aspect.

[0077] In the nineteenth aspect, a communication system is provided, comprising the communication device described in the seventeenth aspect and the network equipment described in the eighteenth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 A schematic diagram of a network architecture provided for an embodiment of the present application;

[0079] Figure 2A schematic diagram of the symbol position of SSB of a cell at different frequencies provided in an embodiment of the present application;

[0080] Figure 3 A schematic diagram of a method for activating a cell provided in an embodiment of the present application;

[0081] Figure 4 A schematic diagram of the symbol position of SSB of a cell at different frequencies provided in an embodiment of the present application;

[0082] Figure 5 A schematic diagram of the symbol position of SSB of a cell at different frequencies provided in an embodiment of the present application;

[0083] Figure 6 A schematic diagram of a cell measurement method flow provided in an embodiment of the present application;

[0084] Figure 7 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0085] Figure 8 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0086] Fig. 9 A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0087] Fig.10 A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0088] Fig.11 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0089] Fig.12 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0090] Fig.13 A schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0091] Fig.14 A schematic diagram of the structure of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0092] For ease of understanding, some examples of concepts related to the embodiments of the present application are provided for reference, as shown below:

[0093] RRM measurement: In 5G, in order to assist its mobility management, for example, when switching cells, terminal devices will perform measurements such as reference signal receiving power (RSRP) or reference signal receiving quality (RSRQ). During the measurement, the network equipment will configure the SSB based measurement timing configuration (SMTC) for each target frequency point in units of frequency points, and periodically send synchronization signal blocks (synchronization signal and (physical broadcast channel, physical broadcast channel, PBCH) block, SSB) to the cells under each frequency point according to the SMTC. The terminal device calculates the RSRP or RSRQ of the cell based on the received SSB to determine the signal quality of the cell. Different from the design of separating the cell downlink synchronization signal and the physical broadcast channel in 4G, the cell primary and secondary synchronization signals SS and the physical broadcast channel PBCH are coupled to a certain extent in 5G, and appear in the form of SS / PBCH resource blocks, referred to as SSB (synchronization signal and PBCH block).

[0094] SCell activation: After the network device configures an SCell for a terminal device, the SCell is in a deactivated state by default and cannot be used for data transmission. When the SCell is needed for data transmission, the network device can send an activation command to the terminal device. After the terminal device completes the activation-related actions, the SCell can be used for data transmission.

[0095] Frequency: refers to the specific absolute frequency value, generally the center frequency of the modulation signal.

[0096] Maximum receive timing difference (MRTD): When a terminal device receives signals from two cells, there is a receive timing difference (RTD) between the two cell signals. MRTD is the maximum value of RTD that the UE needs to support as defined in the standard. If the RTD exceeds MRTD, the terminal device may not be able to correctly receive the signals from the two cells.

[0097] Timing advance group (TAG): consists of one or more serving cells with the same uplink timing advance and the same downlink reference cell.

[0098] FR1 intra-band contiguous carrier aggregation (CA): When multiple carriers of different frequencies are in the same frequency band, the multiple carriers are intra-band CA. If the multiple carriers are continuous, it can be called intra-band contiguous CA. If the multiple carriers are at the FR1 frequency point at the same time, it can be called FR1 intra-band contiguous CA.

[0099] FR1 intra-band non-contiguous CA: Referring to the above description, when multiple carriers of different frequencies are in the same band but not continuous, the multiple carriers can be called intra-band non-contiguous CA. If the multiple carriers are at the FR1 frequency at the same time, it can be called FR1 intra-band non-contiguous CA.

[0100] FR1 inter-band CA: Referring to the above description, when multiple carriers of different frequencies are in different bands, the multiple carriers can be called inter-band CA. If the multiple carriers are in FR1 frequency at the same time, it can be called FR1 inter-band CA.

[0101] Among them, according to the definition of 5G frequency range by the 3rd generation partnership project (3GPP), it is divided into frequency band (Frequency Range, FR) 1 (450MHz-6000MHz, also known as Sub-6GHz) and FR2 (24250MHz-52600MHz, also known as Above-6GHz or millimeter wave).

[0102] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0103] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this embodiment, unless otherwise specified, "plurality" means two or more.

[0104] The embodiments of the present application can be used in a 5G communication system, and specifically can be applied to all CA scenarios, such as FR1intra-band contiguous CA scenarios, FR1intra-band non-contiguous CA or FR1inter-band CA scenarios, etc.

[0105] Currently, the standard stipulates that in the FR1 intra-band contiguous CA scenario, multiple service cells are co-located and synchronized. The so-called synchronization means that the transmission timing difference between the two cells is less than or equal to a certain threshold, such as 260ns. However, no conclusion is given on whether multiple service cells in the FR1 intra-band contiguous CA scenario can assume the same transmission beam on the same symbol, nor is a conclusion given on whether the FR1 intra-band non-contiguous CA or FR1 inter-band CA scenarios can assume co-location, synchronization and / or the same transmission beam. This application will explain in subsequent embodiments whether co-location, synchronization and / or the same transmission beam can be assumed in these scenarios. Among them, having the same transmission beam, that is, the angle of the transmission beam is the same, is reflected in the standard as using the same transmission spatial filter parameters (downlink spatial domain transmission filter) on the same symbol of the two cells.

[0106] Even if multiple cells have the same transmission beam on the same SSB, there are still situations where the SSB formats (patterns) of multiple cells are different. This will result in that if the terminal device determines to perform an activation action by referring to the beam information and timing information of a certain SSB of an activated or known cell, the cell to be activated does not send an SSB at the symbol position of the SSB, and the terminal device cannot determine which SSB should be used for activation on the cell to be activated. This application will explain how the terminal device determines the SSB used in the rapid activation process in these scenarios in subsequent embodiments.

[0107] The network architecture of the present application may include multiple network devices and multiple communication apparatuses.

[0108] Among them, the network device in the embodiment of the present application can be a base station gNB (gNodeB) in a 5G communication system, or a transmission point (transmission and reception point, TRP or transmission point, TP), etc., one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G communication system, or it can also be a network node constituting a gNB or a transmission point, such as a baseband unit (baseband unit, BBU), or a distributed unit (DU, distributed unit), etc., or it can be a vehicle-mounted device, a wearable device or a network device in a future evolved PLMN network, etc.

[0109] The communication device in the embodiment of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The communication device in the embodiment of the present application may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a terminal device in 5G network or a terminal device in the future public land mobile communication network (PLMN), etc. The embodiment of the present application does not limit the application scenario. The methods and steps implemented by the communication device in this application may also be implemented by components (such as chips or circuits) that can be used in the communication device. In this application, the aforementioned communication device and components (such as chips or circuits) that can be set in the aforementioned communication device are collectively referred to as communication devices.

[0110] In the above network architecture, reference Figure 1, taking the communication device as UE and the network equipment as base station as an example, the UE can be in a single connection, that is, connected to one base station, or it can send and receive data at two base stations at the same time, that is, in dual-connectivity. One of the base stations is responsible for sending radio resource control (RRC) messages to the UE and is responsible for interacting with the core network control plane entity. The base station is called the main base station MeNB, and the other base station is called the secondary base station SeNB. The UE has a cell in the main base station, which is the main cell PCell of the UE. RRC messages are sent to the UE through the main cell, and other cells are secondary cells SCell. In the following embodiments, the main base station is referred to as the base station. The base station in this application can be in a single connection, a dual connection or other connection state.

[0111] The network device will configure SMTC for each target frequency point in units of frequency points. The cells under each frequency point periodically send SSBs, and the network device ensures that the SSBs sent by multiple cells under one frequency point are within the SMTC window. During the movement process, the UE will periodically perform RRM measurements. During the measurement, the UE can periodically measure the SSBs of multiple SCells to calculate the RSRP or RSRQ of each SCell based on the SSBs of multiple SCells received. When the UE determines that the RSRP or RSRQ meets certain conditions, the UE reports the RSRP or RSRQ of the SCell to the base station. When the base station determines that the SCell needs to send a certain amount of data to the UE, it will send an activation command to the UE to notify the UE that the Scell ​​needs to be activated. However, when the UE receives the activation command, the SCell may be known to the UE or unknown. Known means that the UE has performed RRM measurements for the SCell and reported it to the base station within a preset time before receiving the activation command, otherwise it is unknown. For example, the preset time can be 5s or other values.

[0112] When the UE determines to activate an unknown SCell, the UE generally needs to perform a cell search first to obtain the timing information of the SCell to be activated. However, in the FR2 band, if the UE determines that there is an activated service cell or an unactivated but known SCell, the UE does not need to perform a cell search at this time, and directly uses the timing information and beam information of the activated service cell or the known service cell to receive the SSB sent by the base station, thereby achieving rapid activation. However, in the FR2 band, the prerequisite for the UE to use the timing information and beam information of the activated service cell or the known service cell is that the base station needs to ensure that all service cells in the FR2 band are co-located, time synchronized, and have the same transmission beam on the same symbol.

[0113] Among them, co-site can be understood as two service cells being within the coverage range of the same antenna; time synchronization can be understood as the alignment of the starting positions of the symbols, slots and frames of the signals sent by the two service cells, or the error is within a certain range (for example, 260ns); having the same transmission beam on the same symbol can be understood as the angles of the transmission beams are the same when the two cells transmit on the same symbol, which is reflected in the standard as the use of the same transmission spatial filter parameters (downlink spatial domain transmission filter) on the same symbols of the two cells.

[0114] Under the premise that multiple service cells have the same transmission beam on the same symbol, if the SCell to be activated directly refers to the timing information and beam information of the activated service cell or the known service cell to receive the SSB, there may be a situation where the SSB format (patter) of the SCell to be activated is different from that of the activated service cell or the known service cell. The SSB patterns of the two cells are different, that is, the sets of SSB identifiers (index) sent by the two cells to the UE are different.

[0115] For example, refer to Figure 2 , cell1 and cell2 are cells on different frequencies, and are co-located, time-synchronized, and have the same transmission beam. UE determines that cell1 is an activated cell, or an unactivated but known cell, and cell 2 is a cell to be activated. Cell1 and cell 2 have the same transmission beam on the same symbol. However, the SSB pattern sent by cell1 and cell 2 is different. Cell1 sends SSB0 and SSB1, and cell2 sends SSB2 and SSB3. 0, 1, 2, and 3 are the indexes of SSB. If the UE determines that the transmission beam corresponding to SSB0 of cell1 is the optimal transmission beam, that is, the transmission beam with the best signal quality, the UE cannot directly refer to the symbol position of SSB0 to receive the SSB sent by cell2, because cell2 does not send any SSB at the symbol position of SSB0. At the same time, the UE cannot determine whether the transmission beam of SSB2 or SSB3 sent on cell2 is the same as the transmission beam of SSB0 on ​​cell1. Therefore, it cannot determine whether SSB2 or SSB3 can be received with the timing and receiving beam of SSB0, so as to realize the rapid activation of cell2. Among them, Figure 2 The example in the figure shows that each SSB occupies 4 symbols.

[0116] Therefore, the present application is used to solve the problem of how the UE can use the synchronization information of an activated service cell or an unactivated but known service cell to quickly activate the service cell to be activated if two service cells have the same site, time synchronization and the same transmission beam, but different SSB patterns. Moreover, the current standard stipulates that the FR2 band can assume that multiple service cells meet the conditions of co-site, time synchronization and the same transmission beam, but does not give a conclusion on whether other scenarios can also assume this condition. Therefore, the present application also describes how the UE can use the synchronization information of an activated service cell or an unactivated but known service cell to quickly activate the service cell to be activated in other scenarios (such as FR1 band).

[0117] Based on the above description, the present application embodiment proposes a method for activating a cell, such as Figure 3 As shown, the method includes:

[0118] 301. The network device sends a command to activate the SCell to be activated to the terminal device.

[0119] The embodiment of the present application is described by taking the terminal device as UE, the network device as base station, and the service cell as cell1 as an example.

[0120] As described above, after being configured, the SCell is in a deactivated state by default. When the base station determines that data needs to be exchanged with the UE through the SCell, the base station can send a command to activate the SCell to the UE. At this time, the SCell is a cell to be activated.

[0121] At the same time, the base station can configure the UE to periodically measure the RSRP or RSRQ of each serving cell (SCell). When the RSRP or RSRQ of any SCell meets the conditions, the UE reports to the base station. If the UE has reported the RSRP or RSRQ of the SCell within a period of time before the UE receives the SCell activation command, the SCell is a known cell, otherwise it is an unknown cell.

[0122] 302. The terminal device determines a serving cell that can perform information synchronization with the SCell to be activated, where the serving cell is an activated cell or a known cell.

[0123] In some embodiments, the standard predefines that information synchronization can be performed between multiple serving cells on FR1 intra-band contiguous CA.

[0124] Or, in the standard pre-defined, multiple service cells belonging to the same TAG can perform information synchronization.

[0125] That is, if the UE receives the activation command sent by the base station, if the UE determines that the SCell to be activated and cell1 are both serving cells on the FR1 intra-band contiguous CA, and cell1 is an activated serving cell, or is an unactivated serving cell but known to the UE, then the UE can determine that information synchronization can be performed between the SCell to be activated and cell1;

[0126] Alternatively, if the UE receives the activation command sent by the base station, if the UE determines that the SCell to be activated and cell1 belong to the same TAG, then the UE can determine that information synchronization can be performed between the SCell to be activated and cell1.

[0127] The ability to synchronize information between two service cells means that the service cells share the same site, are time synchronized, and have the same transmission beam on the same symbol.

[0128] In some embodiments, the standard predefines that information synchronization can be performed between multiple serving cells on FR1 intra-band non-contiguous CA; or information synchronization can be performed between multiple serving cells on FR1 inter-band CA.

[0129] Of course, the standard pre-definition in step 302 may also include that information synchronization can be performed between multiple serving cells on FR2 intra-band CA.

[0130] In some embodiments, the UE may not need to determine the service cell that can synchronize information with the SCell to be activated according to the standard pre-definition, but may indicate in advance the service cell that can synchronize information with the SCell in the RRC message that the base station configures the SCell to the UE. That is, when the base station configures the SCell to the UE, the UE can receive the RRC message sent by the base station, and the RRC message is used to indicate that the SCell to be activated is the secondary cell of the UE. Different from the current RRC message, the RRC message includes the first indication information, and the first indication information is used to indicate the service cell that can synchronize information with the SCell to be activated.

[0131] For example, the first indication information is used to indicate the identifier of the serving cell that can perform information synchronization with the SCell to be activated (index of the serving cell).

[0132] In some embodiments, the base station may also indicate whether the UE can assume that the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group. When the assumption is established, the UE can receive an RRC message sent by the base station, and the RRC message includes second indication information, and the second indication information is used to indicate that the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group.

[0133] For example, the second indication information can be 1 bit. When the value of 1 bit is 1, it is used to indicate that the assumption is true, that is, the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group; when the value of 1 bit is 0, it is used to indicate that the assumption is not true, that is, the SCell to be activated cannot perform information synchronization with multiple service cells in the same frequency band or the same TA group.

[0134] 303. The terminal device determines a first SSB in the SSBs sent by the SCell to be activated, and the first SSB corresponds to a second SSB sent by the serving cell.

[0135] When the UE determines the service cell that can perform information synchronization with the SCell to be activated, the UE can further determine which SSB among the SSBs sent by the SCell to be activated is used to activate the SCell to be activated, that is, determine the index of the SSB among the SSBs sent by the SCell to be activated that is suitable for activating the SCell to be activated, which is recorded as the first SSB in the embodiment of the present application.

[0136] Since the activated service cell cell1 that can perform information synchronization, or the unactivated but known cell1, is determined in step 302, the UE can determine the optimal transmission beam in the SSB of cell1, that is, the SSB with the best signal quality in the SSB of cell1. SSBs of different indexes occupy different symbol positions, and the corresponding transmission beams are also different, which are predefined in the standard. When the UE determines that the SSB corresponding to the optimal transmission beam in the SSB of cell1 is the second SSB, the UE determines that the first SSB used to activate the SCell to be activated is the SSB with the same transmission beam as the second SSB. Therefore, the present application can determine the SSB corresponding to the second SSB in the SSB of the SCell to be activated as the first SSB, and the first SSB is used to activate the cell to be activated.

[0137] There may be multiple implementations for determining the first SSB corresponding to the second SSB in the SSB of the SCell to be activated. The following implementations are listed in the embodiment of the present application:

[0138] In some embodiments, the UE may determine, according to standard predefinition, a first SSB among the SSBs sent by the SCell to be activated, where the first SSB corresponds to a second SSB in the serving cell.

[0139] For example, the standard pre-definition may stipulate that: service cells in the same frequency band have the same SSB pattern; or, the standard pre-definition stipulates that service cells capable of information synchronization have the same SSB pattern.

[0140] The two serving cells have the same SSB pattern when the two serving cells send SSBs with the same index. Alternatively, it can be understood that the same SSB format means that the sb-PositionsInBurst of the two serving cells is the same.

[0141] Then, when it is determined in step 302 that the SCell to be activated and cell1 are both service cells under the FR1 band, the UE can determine that the SCell to be activated and cell1 have the same SSB pattern. Alternatively, when it is determined in step 302 that cell1 is a service cell that can synchronize information with the SCell to be activated, the UE can determine that the SCell to be activated and cell1 have the same SSB pattern. Then, if the second SSB is the SSB with the best transmission beam among the SSBs sent by cell1, the UE can determine that the first SSB is an SSB with the same identifier as the second SSB according to the standard pre-definition.

[0142] For example, if the SCell to be activated is cell2, refer to Figure 4 , assuming that the SSB pattern sent by cell1 is: SSB0 and SSB1, the symbol index of SSB0 and SSB1 is different from the transmission beam, for example, SSB0 sent by cell1 occupies symbols 0, 1, 2 and 3 in the time domain, and SSB1 sent by cell1 occupies symbols 4, 5, 6 and 7 in the time domain. Then, when the UE determines that the SSB of the optimal transmission beam of cell1 is SSB0, that is, when the second SSB is SSB0 of cell1, since the SSB patterns of the two cells are the same and the same transmission beam is used on the same symbol, the transmission beams of SSB0 of cell1 and SSB0 of cell2 are the same, and the UE determines that the first SSB is SSB0 of cell2. The symbols occupied by the first SSB are symbols 0, 1, 2 and 3, and the starting position of symbol 0 occupied by the first SSB is the same as the starting position of symbol 0 of the second SSB, that is, the timing information is the same, and the transmission beam of the first SSB is the transmission beam of SSB0 sent by cell1.

[0143] In some embodiments, the UE may determine, according to network instructions, a first SSB in the SSBs sent by the SCell to be activated, the first SSB corresponding to the second SSB in the serving cell, that is, the first SSB is an SSB having the same transmission beam as the second SSB.

[0144] For example, the UE may receive the third indication information sent by the base station.

[0145] Among them, the third indication information is used to indicate the index of the first SSB sent by the SCell to be activated, and the transmission beam of the first SSB is the same as the transmission beam of the second SSB sent by the serving cell.

[0146] That is, in this implementation, the base station has learned the index of the second SSB with the best transmission beam on cell1 (for example, through the UE's measurement report on cell1). Therefore, the base station can determine the index of the SSB on cell2 that has the same transmission beam as the second SSB, and directly indicate to the UE the index of the first SSB in the SSB sent by the SCell to be activated. The index of the first SSB may be the same as or different from the index of the second SSB. For example, the index of the second SSB is SSB0, and the network determines that the index of the first SSB is SSB1. The starting positions of the symbols occupied by the first SSB and the second SSB are different. The UE determines the starting position of the first SSB (the position of symbol 4) through the symbol starting position of the second SSB (that is, the position of symbol 0).

[0147] Alternatively, the third indication information is used to indicate the correspondence between the SSB sent by the SCell to be activated and the SSB sent by the serving cell, so that the UE determines the index of the first SSB based on the correspondence and the index of the second SSB.

[0148] In this implementation, the base station does not know the index of the second SSB with the best transmission beam on cell1. Therefore, the base station can notify the UE of the correspondence between all SSBs on the SCell to be activated and all SSBs on the activated or known service cells. The UE can determine the index of the first SSB based on the index of the second SSB corresponding to the best transmission beam on cell1 and the correspondence. For example, the index of the second SSB is SSB0. In the correspondence, SSB0 of cell1 corresponds to SSB2 in the SSB of the SCell to be activated. Then SSB2 of the SCell to be activated has the same transmission beam as SSB0 of cell1, and the UE determines that the index of the first SSB is 2. If the starting position of the symbol corresponding to SSB0 is symbol 0, the UE can determine the timing information of symbol 0 on the SCell to be activated based on the timing information of symbol 0 of SSB0, and thus can derive the timing information of the symbol of SSB2 based on the timing information of symbol 0 on the SCell to be activated.

[0149] refer to Figure 5 If the SCell to be activated is cell2, assuming that the symbols of SSB2 on the SCell to be activated are 10, 11, 12 and 13, then when the timing information of symbol 0 on the SCell to be activated, that is, the starting position of symbol 0, is determined, the starting position of symbol 10 can be determined based on the starting position of symbol 0.

[0150] 304. The terminal device activates the SCell to be activated based on the first SSB sent by the SCell to be activated according to the timing information and beam information of the second SSB.

[0151] When the UE determines the second SSB, as well as the timing information and beam information of the second SSB, the UE can determine the timing information of the first SSB according to the timing information of the second SSB according to the instructions in step 303, that is, derive the timing information of the first SSB according to the timing information of the second SSB; and determine the beam information of the first SSB according to the beam information of the second SSB. The first SSB and the second SSB have the same transmission beam. Therefore, the UE can receive the first SSB sent by the SCell to be activated according to the timing information and beam information of the second SSB to activate the SCell to be activated.

[0152] Therefore, in an embodiment of the present application, the UE can determine the service cell that can perform information synchronization with the SCell to be activated according to the standard pre-definition or network indication, and is not limited to the service cell in the FR2 band, that is, the service cells in the FR1 band can also have a common site, time synchronization, and the same transmission beam on the same symbol, and then determine the service cell that has a common site, time synchronization, and the same transmission beam on the same symbol with the SCell to be activated in the FR1 band.

[0153] Furthermore, when the SSB pattern of the SCell to be activated is different from that of the activated service cell or the unactivated but known service cell, the UE can determine the first SSB in the SSB sent by the SCell to be activated, and the first SSB is the SSB corresponding to the second SSB with the best transmission beam on the known or activated service cell. Then, the UE can determine the timing information and beam information of the first SSB based on the timing information and beam information of the second SSB, so as to receive the first SSB of the SCell to be activated according to the timing information and beam information of the first SSB, so as to ensure that the UE can receive the first SSB with accurate reception timing and reception beam, and complete the activation of the SCell to be activated. In other words, regardless of whether the SSB pattern actually used on each service cell is the same, the UE can always determine the first SSB corresponding to the second SSB with the best transmission beam in the SSB of the service cell on the SCell to be activated, so as to save the cell search and beam measurement time in the cell activation process and realize rapid activation of the cell.

[0154] In addition, the network will also configure multiple frequency points for the UE. Each configured frequency point can be used as a measurement object (MO). Each frequency point can correspond to multiple cells, and the cells under each frequency point can belong to the same site or different sites. For example, the frequency point where the UE's current service cell is located is the first frequency point, but according to the UE's measurement result of the first frequency point, the UE's signal instruction at the first frequency point is poor. At this time, the base station can configure a new frequency point to the UE, such as the second frequency point, so that the UE measures the cell under the second frequency point. When the UE notifies the base station of the cell measurement result of the second frequency point, the base station can determine whether the UE needs to switch to the second frequency point based on the cell measurement result of the second frequency point. If there is a cell measurement result that meets the conditions at the second frequency point, the base station can instruct the UE to switch to the target cell; if there is no cell measurement result that meets the conditions at the second frequency point, the base station can instruct the UE to measure other frequencies, such as the third frequency point.

[0155] Currently, the standard defines that the network can configure the deriveSSB-IndexFromCell parameter when configuring MO. The configuration of this parameter means that the UE can derive the SSBindex of other cells through the SSB index of the serving cell on the configured MO (the target frequency of the MO is the frequency where the serving cell is located) or any cell (the target frequency of the MO is not the frequency where the serving cell is located) to save the SSB index reading time when measuring the cell of the first frequency.

[0156] In this application, when configuring MO, the network may also include synchronization information, which is used to achieve synchronization across frequency points. For example, when the network deploys two basically synchronized frequency points, when the UE performs inter-frequency measurement, it can derive the SSB index of the neighboring cell on the non-service frequency point through the SSB index on the service cell, so as to save the time of reading the SSB index when measuring the target frequency point, thereby saving the cell search time during the frequency point measurement process.

[0157] In the present application, when the cells deployed by the network at one frequency point have good synchronization accuracy, the UE can obtain the timing of other neighboring cells through the timing of the serving cell or a detected cell when performing measurements at the frequency point, thereby saving the cell search time during the measurement process.

[0158] Therefore, the embodiment of the present application also provides a method for measuring a cell, such as Figure 6 As shown, the method includes:

[0159] 601. A terminal device receives configuration information sent by a network device, where the configuration information is used to configure a measurement target, where the measurement target is a first frequency point, and the configuration information includes synchronization information, where the synchronization information includes a second frequency point having a synchronization relationship with the measurement target, a first service cell on the second frequency point, a synchronization accuracy of the measurement target, or at least one of a neighbor cell list.

[0160] The embodiment of the present application is described by taking the terminal device as UE and the network device as a base station as an example.

[0161] That is, the base station can send configuration information to the UE, and the configuration information is used to configure the MO, and the configured MO is recorded as the first frequency point. When configuring the first frequency point, the configuration information also includes synchronization information, and the synchronization information can carry at least one of the following information:

[0162] 1) A second frequency point that is synchronized with the first frequency point, or a first service cell on the second frequency point that is synchronized with the first frequency point.

[0163] 2) Synchronization accuracy of the first frequency point.

[0164] Among them, the synchronization accuracy can be SSB level synchronization, or the synchronization accuracy can be MRTD level synchronization, or other levels of synchronization accuracy, which is not limited in this application.

[0165] The synchronization accuracy is the synchronization accuracy between the cell on the first frequency and the synchronization information source. The synchronization information source may be a serving cell on the first frequency, or a known non-serving cell on the first frequency. When the synchronization information includes the second frequency or the first serving cell, the synchronization information source may be the first serving cell or a known non-serving cell on the second frequency.

[0166] 3) Neighboring area list.

[0167] Among them, the cells in the neighbor cell list are: relative to the service cell of the UE, it may be a non-service cell at another site under the first frequency, or it may be a non-service cell on other frequencies.

[0168] 602. The terminal device measures the cell on the measurement target according to the synchronization information.

[0169] In some embodiments, if the synchronization information does not include information 1), but includes information 2), that is, synchronization accuracy, the UE measures the cell on the measurement target according to the synchronization information, including: if the synchronization accuracy is less than or equal to the preset first threshold, the UE can measure the cell on the first frequency point according to the timing information of the serving cell on the first frequency point, or the timing information of the known cell in the first frequency point. In this way, when measuring the cell on the first frequency point, the UE can save the time of searching the cell on the first frequency point, and directly measure the cell on the first frequency point according to the timing information of the serving cell on the first frequency point, or the timing information of the known cell in the first frequency point, to obtain the RSRP / RSRQ / SINR of the cell on the first frequency point.

[0170] The preset first threshold may be predefined in the standard. For example, the maximum timing error that can be tolerated by RSRP / RSRQ / SINR measurement performance can be studied through simulation. In other words, the preset first threshold may be a threshold of synchronization accuracy of the maximum timing error level.

[0171] For example, when the synchronization accuracy is at the intra-band CA MRTD level, the preset first threshold may be 3 us (FR1) or 260 ns (FR2).

[0172] If the synchronization information also includes information 3), the UE can measure multiple neighboring cells on the first frequency point and in the neighboring cell list. If the synchronization information does not include information 3), the UE needs to measure all cells on the first frequency point.

[0173] In some embodiments, if the synchronization information includes information 1) and information 2), that is, includes the second frequency point or the first service cell, and includes synchronization accuracy, and the synchronization accuracy is less than a preset second threshold value, then the terminal device measures the cell on the measurement target according to the synchronization information, including: the UE can determine the index of the SSB of the service cell to be measured on the first frequency point according to the index of the SSB of the known cell on the first service cell or the second frequency point (determine the index of the SSB according to the symbol position of the detected SSB on the cell to be measured on the synchronization information source cell). This can save the time of reading the SSB index when measuring the cell of the first frequency point, thereby saving the time of measuring the cell of the first frequency point.

[0174] Among them, the preset second threshold can be a threshold of SSB level synchronization accuracy.

[0175] For example, when the second threshold is preset to be the synchronization accuracy of the SSB level, the preset second threshold may be the length of 2 SSB symbols.

[0176] In some embodiments, if the synchronization information includes information 1) and information 2), that is, includes the second frequency point or the first service cell, and includes synchronization accuracy, then if the synchronization accuracy is less than or equal to the preset first threshold, the terminal device measures the cell on the measurement target according to the synchronization information, including: the UE determines the timing information of the service cell to be measured on the first frequency point according to the timing information of the first service cell or the known cell on the second frequency point, so as to measure the cell on the first frequency point. In this way, when measuring the cell on the first frequency point, the UE can save the time of searching the cell on the first frequency point, and directly measure the cell on the first frequency point according to the timing information of the service cell on the first frequency point, or the timing information of the known cell in the first frequency point, to obtain the RSRP / RSRQ / SINR of the cell on the first frequency point.

[0177] It should be noted that, according to the above description of the preset first threshold and the preset second threshold, the preset first threshold is smaller than the preset second threshold, that is, the synchronization accuracy corresponding to the preset first threshold is higher than the synchronization accuracy corresponding to the preset second threshold. Therefore, when the synchronization accuracy is smaller than the preset first threshold, it must also be smaller than the preset second threshold. Therefore, while saving the time for cell search, the time for SSB index reading is further saved.

[0178] Therefore, in the embodiment of the present application, when configuring the target frequency, the synchronization information in the configuration information can indicate the synchronization assumption between cells across MOs. In this way, when the UE performs inter-frequency measurement, the SSB index of the neighboring cell on the non-service frequency can be derived through the SSB index of the serving cell to save the time of reading the SSB index when measuring the target frequency. When the synchronization information also indicates the accuracy of the cell synchronization assumption within or between MOs, if the cell of the network on the first frequency has a synchronization accuracy that meets the preset threshold, the UE can perform measurements on the first frequency by using the timing information of the first serving cell of the second frequency or the known cell on the second frequency, or the timing information of the service cell to be measured on the first frequency, to save the cell search time for measuring the first frequency. The above describes the communication method provided in the embodiment of the present application, and the following describes the terminal device and network device provided in the embodiment of the present application.

[0179] Figure 7 The schematic block diagram of the terminal device 700 provided in the embodiment of the present application can be used to execute the above-mentioned method of activating a cell. The terminal device 700 includes:

[0180] The processing module 710 is configured to determine a serving cell that can perform information synchronization with the secondary cell to be activated SCell, where the serving cell is an activated cell or a known cell;

[0181] The processing module 710 is further configured to determine a first SSB in the SSBs sent by the SCell to be activated, where the first SSB corresponds to a second SSB sent by the serving cell;

[0182] The processing module 710 is also used to activate the SCell to be activated based on the timing information and beam information of the second SSB and based on the first SSB sent by the SCell to be activated received by the transceiver module 720.

[0183] In an embodiment of the present application, in the standard pre-defined, information synchronization can be performed between multiple service cells on the intra-band continuous carrier aggregation CA in the FR1 frequency band; or, in the standard pre-defined, information synchronization can be performed between multiple service cells belonging to the same timing advance TA group.

[0184] In an embodiment of the present application, the transceiver module 720 is used to: receive a radio resource control RRC message sent by a network device, the RRC message is used to indicate that the SCell to be activated is a secondary cell of the communication device, and the RRC message includes first indication information, and the first indication information is used to indicate a service cell that can perform information synchronization with the SCell to be activated.

[0185] In an embodiment of the present application, the transceiver module 720 is used to: receive a wireless resource control RRC message sent by a network device, the RRC message includes second indication information, and the second indication information is used to indicate that the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group.

[0186] In an embodiment of the present application, the processing module 710 is used to determine the first SSB in the SSB sent by the SCell to be activated according to standard pre-definition or network indication, and the first SSB corresponds to the second SSB in the service cell; wherein, when the first SSB corresponds to the second SSB, the first SSB and the second SSB have the same transmission beam.

[0187] In the embodiment of the present application, in the standard pre-definition: the service cells in the same frequency band have the same SSB format; or, in the standard pre-definition, the service cells capable of information synchronization have the same SSB format; wherein two service cells have the same SSB format: the two service cells send SSBs with the same identifier;

[0188] The processing module 710 is used to: determine, according to standard predefinition, that the first SSB is an SSB whose identifier is the same as the identifier of the second SSB.

[0189] In the embodiment of the present application, the transceiver module 720 is used to: receive third indication information sent by the network device;

[0190] The third indication information is used to indicate the identifier of the first SSB sent by the SCell to be activated, and the transmission beam of the first SSB is the same as the transmission beam of the second SSB sent by the serving cell;

[0191] Alternatively, the third indication information is used to indicate the correspondence between the SSB sent by the SCell to be activated and the SSB sent by the serving cell, so that the communication device determines the identifier of the first SSB based on the correspondence and the identifier of the second SSB.

[0192] In an embodiment of the present application, the processing module 710: determines the timing information of the first SSB according to the timing information of the second SSB; determines the beam information of the first SSB according to the beam information of the second SSB; the transceiver module 720 is used to: receive the first SSB sent by the SCell to be activated according to the timing information and beam information of the first SSB, and activate the SCell to be activated.

[0193] In the embodiment of the present application, information synchronization includes: co-location between service cells, time synchronization, and having the same transmission beam on the same symbol.

[0194] Therefore, regardless of whether the SSB pattern actually used on each service cell is the same, the UE can always determine the first SSB corresponding to the second SSB with the best transmission beam in the SSB of the service cell on the SCell to be activated, so as to save the cell search and beam measurement time during the cell activation process and realize rapid activation of the cell.

[0195] In some other embodiments, the terminal device of the present application is further used to perform a method for measuring a cell, in which case:

[0196] The transceiver module 720 is used to: receive configuration information sent by the network device, where the configuration information is used to configure a measurement target, where the measurement target is a first frequency point, and the configuration information includes synchronization information, where the synchronization information includes a second frequency point having a synchronization relationship with the measurement target, a first serving cell on the second frequency point, a synchronization accuracy of the measurement target, or at least one of a neighboring cell list;

[0197] The processing module 710 is configured to measure a cell on a measurement target according to the synchronization information.

[0198] In some embodiments, if the synchronization information includes synchronization accuracy, the processing module 710 is configured to:

[0199] If the synchronization accuracy is less than or equal to the preset first threshold, the cell on the first frequency is measured according to the timing information of the serving cell on the first frequency or the timing information of the known cells in the first frequency.

[0200] In some embodiments, if the synchronization information includes synchronization accuracy and a neighboring cell list, the processing module 710 is used to: if the synchronization accuracy is less than or equal to a preset first threshold, the communication device measures multiple neighboring cells on the first frequency point and in the neighboring cell list based on the timing information of the serving cell on the first frequency point or the timing information of the known cell on the first frequency point.

[0201] In some embodiments, if the synchronization information includes the second frequency point or the first service cell, and includes synchronization accuracy, and the synchronization accuracy is less than a preset second threshold, the processing module 710 is used to: determine the SSB identifier of the service cell to be tested on the first frequency point based on the SSB identifier of the first service cell or the known cell on the second frequency point.

[0202] In some embodiments, if the synchronization information includes the second frequency point or the first service cell, and includes synchronization accuracy, and the synchronization accuracy is less than or equal to a preset first threshold, the processing module 710 is used to: determine the timing information of the service cell to be measured on the first frequency point based on the timing information of the first service cell or the known cell on the second frequency point, so as to measure the cell on the first frequency point.

[0203] Therefore, in the embodiment of the present application, when configuring the target frequency, the synchronization information in the configuration information can indicate the synchronization assumption between cells across MOs. In this way, when the UE performs inter-frequency measurement, the SSB index of the neighboring cell on the non-service frequency can be derived through the SSB index of the serving cell to save the time of reading the SSB index when measuring the target frequency. When the synchronization information also indicates the accuracy of the cell synchronization assumption within or between MOs, if the cell of the network on the first frequency has a synchronization accuracy that meets the preset threshold, the UE can perform measurements on the first frequency by using the timing information of the first serving cell of the second frequency or the known cell on the second frequency, or the timing information of the service cell to be measured on the first frequency, to save the cell search time for measuring the first frequency.

[0204] It should be understood that the processing module 710 in the embodiment of the present application can be implemented by a processor or a processor-related circuit component, and the transceiver module 720 can be implemented by a transceiver or a transceiver-related circuit component.

[0205] like Figure 8 As shown, the embodiment of the present application further provides a terminal device 800, which includes a processor 810, a memory 820 and a transceiver 830, wherein the memory 820 stores instructions or programs, and the processor 810 is used to execute the instructions or programs stored in the memory 820. When the instructions or programs stored in the memory 820 are executed, the processor 810 is used to execute the operations performed by the processing module 710 in the above embodiment, and the transceiver 830 is used to execute the operations performed by the transceiver module 720 in the above embodiment.

[0206] It should be understood that the terminal device 700 or the terminal device 800 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the embodiment of the present application, and the operations and / or functions of each module in the terminal device 700 or the terminal device 800 are respectively to implement Figures 3 to 6 For the sake of brevity, the corresponding processes of each method in are not repeated here.

[0207] Fig. 9 The structural block diagram of the network device 900 provided in the embodiment of the present application is used to activate a cell. The network device 900 includes:

[0208] The processing module 910 is used to determine a serving cell that can perform information synchronization with the secondary cell to be activated SCell;

[0209] The transceiver module 920 is used to indicate to the communication device a serving cell that can perform information synchronization with the secondary cell to be activated SCell, where the serving cell is an activated cell or a known cell;

[0210] The transceiver module 920 is also used to send a first SSB to the communication device, and the first SSB corresponds to the second SSB sent by the serving cell.

[0211] In an embodiment of the present application, the transceiver module 920 can be used to: send a radio resource control RRC message to a communication device, the RRC message is used to indicate that the SCell to be activated is a secondary cell of the communication device, the RRC message includes first indication information, and the first indication information is used to indicate a service cell that can perform information synchronization with the SCell to be activated.

[0212] In an embodiment of the present application, the transceiver module 920 can be used to: send a wireless resource control RRC message to a communication device, the RRC message includes second indication information, and the second indication information is used to indicate that the SCell to be activated can perform information synchronization with multiple service cells in the same frequency band or the same TA group.

[0213] In an embodiment of the present application, the transceiver module 920 can be used to: before the network device sends the first SSB to the communication device, indicate to the communication device the first SSB in the SSB sent by the SCell to be activated, and the first SSB corresponds to the second SSB in the service cell; wherein, when the first SSB corresponds to the second SSB, the first SSB and the second SSB have the same transmission beam.

[0214] In the embodiment of the present application, the transceiver module 920 may be used to: send third indication information to the communication device;

[0215] The third indication information is used to indicate the identifier of the first SSB sent by the SCell to be activated, and the transmission beam of the first SSB is the same as the transmission beam of the second SSB sent by the serving cell;

[0216] Alternatively, the third indication information is used to indicate the correspondence between the SSB sent by the SCell to be activated and the SSB sent by the serving cell, so that the communication device determines the identifier of the first SSB based on the correspondence and the identifier of the second SSB.

[0217] Information synchronization includes: sharing the same site between service cells, time synchronization, and having the same transmission beam on the same symbol.

[0218] In some other embodiments, when the network device 900 is used to measure a cell:

[0219] The processing module 910 is used to determine the configuration information to be sent to the communication device;

[0220] The transceiver module 920 is used to send configuration information to the communication device;

[0221] The configuration information is used to configure the measurement target, the measurement target is the first frequency point, the configuration information includes synchronization information, and the synchronization information includes a second frequency point that has a synchronization relationship with the measurement target, a first service cell on the second frequency point, the synchronization accuracy of the measurement target, or at least one of a neighbor cell list.

[0222] The beneficial effects on the network device side can be found in the description of the terminal device side and will not be repeated here.

[0223] It should be understood that the processing module 910 in the embodiment of the present application can be implemented by a processor or a processor-related circuit component, and the transceiver module 920 can be implemented by a transceiver or a transceiver-related circuit component.

[0224] like Fig.10 As shown, the embodiment of the present application further provides a network device 1000, which includes a processor 1010, a memory 1020 and a transceiver 1030, wherein the memory 1020 stores instructions or programs, and the processor 1010 is used to execute the instructions or programs stored in the memory 1020. When the instructions or programs stored in the memory 1020 are executed, the processor 1010 is used to execute the operations performed by the processing module 910 in the above embodiment, and the transceiver 1030 is used to execute the operations performed by the transceiver module 920 in the above embodiment.

[0225] It should be understood that the network device 900 or the network device 1000 according to the embodiment of the present application may correspond to the network device in the communication method of the embodiment of the present application, and the operations and / or functions of each module in the network device 900 or the network device 1000 are respectively to implement Figures 3 to 6 For the sake of brevity, the corresponding processes of each method in are not repeated here.

[0226] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it can implement the process related to the terminal device in the communication method provided in the above method embodiment.

[0227] The embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the process related to the network device in the communication method provided by the above method embodiment can be implemented.

[0228] The embodiment of the present application also provides a communication device, which can be a terminal device or a circuit. The communication device can be used to execute the actions executed by the terminal device in the above method embodiment.

[0229] When the communication device is a terminal device, Fig.11 A simplified schematic diagram of the structure of a terminal device is shown. For ease of understanding and illustration, Fig.11In the example, a mobile phone is used as the terminal device. Fig.11 As shown, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used to process communication protocols and communication data, as well as to control the terminal device, execute software programs, process software program data, etc. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input-output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input-output devices.

[0230] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, Fig.11 Only one memory and processor are shown. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device. The memory may be set independently of the processor or may be integrated with the processor, and the embodiments of the present application do not limit this.

[0231] In the embodiments of the present application, the antenna and the radio frequency circuit having transceiver functions may be regarded as the transceiver unit of the terminal device, and the processor having the processing function may be regarded as the processing unit of the terminal device. Fig.11 As shown, the terminal device includes a transceiver unit 1110 and a processing unit 1120. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, etc. The processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, the device used to implement the receiving function in the transceiver unit 1110 may be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 1110 may be regarded as a sending unit, that is, the transceiver unit 1110 includes a receiving unit and a sending unit. The transceiver unit may also be sometimes referred to as a transceiver, a transceiver, or a transceiver circuit, etc. The receiving unit may also be sometimes referred to as a receiver, a receiver, or a receiving circuit, etc. The sending unit may also be sometimes referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0232] It should be understood that the transceiver unit 1110 is used to perform sending operations and receiving operations on the terminal device side in the above method embodiment, and the processing unit 1120 is used to perform other operations on the terminal device except the sending and receiving operations in the above method embodiment.

[0233] For example, in one implementation, the transceiver unit 1110 is used to execute Figure 3 The receiving operation on the terminal device side in step 304 in the above embodiment, and / or the transceiver unit 1110 is also used to perform other transceiver steps on the terminal device side in the embodiment of the present application. The processing unit 1120 is used to perform Figure 3 Steps 302 and 303 in the embodiment of the present application, and / or the processing unit 1120 is also used to execute other processing steps on the terminal device side.

[0234] For another example, in another implementation, the transceiver unit 1110 is used to execute Figure 6 The processing unit 1120 is used to execute the step 601 in the embodiment of the present application, and / or the transceiver unit 1110 is also used to execute other transceiver steps on the terminal device side. Figure 6 Step 602 in the embodiment of the present application, and / or the processing unit 1120 is also used to execute other processing steps on the terminal device side.

[0235] When the communication device is a chip-type device or circuit, the chip device may include a transceiver unit and a processing unit. The transceiver unit may be an input / output circuit and / or a communication interface; the processing unit may be a processor or microprocessor or integrated circuit integrated on the chip.

[0236] When the communication device in this embodiment is a terminal device, it can refer to Fig.12 As an example, the device can perform similar Figure 8 The functions of the processor 810 are as follows. Fig.12 In the embodiment, the device includes a processor 1210, a sending data processor 1220, and a receiving data processor 1230. The processing module 710 in the above embodiment can be Fig.12 The processor 1210 in the embodiment can perform corresponding functions. Fig.12 The sending data processor 1220 and / or the receiving data processor 1230 in the embodiment of the present invention. Fig.12 A channel encoder, a channel decoder, a modulator, a demodulator, a symbol generation module and a channel estimation module are shown in the figure, but it can be understood that these modules do not constitute a restrictive description of this embodiment and are only illustrative.

[0237] Fig.13Another form of this embodiment is shown. The processing device 1300 includes modules such as a modulation subsystem, a central processing subsystem, a peripheral subsystem, and a multimedia subsystem. The communication device in this embodiment can be used as a modulation subsystem therein, and can communicate with a radio frequency device. Specifically, the modulation subsystem may include a processor 1303 and an interface 1304. The processor 1303 performs the functions of the above-mentioned processing module 710, and the interface 1304 performs the functions of the above-mentioned transceiver module 720. As another variation, the modulation subsystem includes a memory 1306, a processor 1303, and a program stored on the memory 1306 and executable on the processor, and the processor 1303 implements the method on the terminal device side in the above-mentioned method embodiment when executing the program. It should be noted that the memory 1306 may be non-volatile or volatile, and its location may be located inside the modulation subsystem or in the processing device 1300, as long as the memory 1306 can be connected to the processor 1303.

[0238] As another form of this embodiment, a computer-readable storage medium is provided, on which instructions are stored. When the instructions are executed, the method on the terminal device side in the above method embodiment is executed.

[0239] As another form of this embodiment, a computer program product including instructions is provided, and when the instructions are executed, the method on the terminal device side in the above method embodiment is executed.

[0240] When the device in this embodiment is a network device, the network device can be as follows Fig.14 As shown, the device 1400 includes one or more radio frequency units, such as a remote radio unit (RRU) 1410 and one or more baseband units (BBU) (also referred to as digital units, digital units, DU) 1420. The RRU 1410 can be referred to as a transceiver module. Fig. 9 The RRU 1410 corresponds to the transceiver module 920 in the figure. Optionally, the transceiver module can also be called a transceiver, a transceiver circuit, or a transceiver, etc., which can include at least one antenna 1411 and a radio frequency unit 1412. The RRU 1410 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals into baseband signals, for example, for sending indication information to terminal devices. The BBU 1420 part is mainly used for baseband processing, controlling the base station, etc. The RRU 1410 and BBU 1420 can be physically arranged together or physically separated, that is, a distributed base station.

[0241] The BBU 1420 is the control center of the base station, which can also be called a processing module. Fig. 9The processing module 910 in the embodiment corresponds to the baseband processing module 910, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, etc. For example, the BBU (processing module) can be used to control the base station to execute the operation process of the network device in the above method embodiment, for example, to generate the above indication information, etc.

[0242] In one example, the BBU 1420 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network of a single access standard (such as an LTE network), or may respectively support wireless access networks of different access standards (such as an LTE network, a 5G network, or other networks). The BBU 1420 also includes a memory 1421 and a processor 1422. The memory 1421 is used to store necessary instructions and data. The processor 1422 is used to control the base station to perform necessary actions, for example, to control the base station to execute the operation process of the network device in the above method embodiment. The memory 1421 and the processor 1422 can serve one or more single boards. In other words, a memory and a processor may be separately set on each single board. It is also possible that multiple single boards share the same memory and processor. In addition, necessary circuits may also be set on each single board.

[0243] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0244] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0245] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor.

[0246] It should be noted that the memory described herein is intended to include, without being limited to, these and any other suitable types of memory.

[0247] It should be understood that in various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0248] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0249] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0250] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0251] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0252] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0253] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0254] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for cell measurement, characterized in that: The method comprises: receiving configuration information from a network device; wherein the configuration information is used to configure a measurement target, the measurement target is a first frequency point, the configuration information includes synchronization information, the synchronization information includes a first serving cell on a second frequency point, and the first serving cell has a synchronization relationship with the measurement target; The first cell on the first frequency point is measured according to the synchronization information.

2. The method according to claim 1, characterized in that The measuring the cell on the measurement target according to the synchronization information includes: Determine the identifier of the SSB of the first cell according to the symbol position of the synchronization signal block SSB of the first cell on the first serving cell.

3. The method according to claim 2, characterized in that The method further comprises: Determine not to read the identifier of the SSB of the first cell.

4. The method according to claim 2 or 3, characterized in that: The time for measuring the first cell does not include the time for reading the identifier of the SSB of the first cell.

5. The method according to claim 2 or 3, characterized in that: The determining, according to a symbol position of a synchronization signal block SSB of the first cell on the first serving cell, an identifier of the SSB of the first cell includes: If the synchronization accuracy of the measurement target is less than or equal to a preset threshold, the identifier of the SSB of the first cell is determined according to the symbol position of the SSB of the first cell on the first serving cell.

6. The method according to claim 5, characterized in that The synchronization accuracy of the measurement target is the synchronization accuracy between the first cell and the first serving cell.

7. The method according to claim 5, characterized in that The preset threshold is the length of two SSB symbols.

8. The method according to claim 1 or 2, characterized in that: The measurement is an out-of-frequency measurement.

9. A method for cell measurement, characterized in that: The method comprises: Send configuration information to a communication device; wherein the configuration information is used to configure a measurement target, the measurement target is a first frequency point, the configuration information includes synchronization information, the synchronization information includes a first service cell on a second frequency point, and the first service cell has a synchronization relationship with the measurement target; the synchronization information is used to measure a first cell on the first frequency point.

10. The method according to claim 9, characterized in that The measurement is an out-of-frequency measurement.

11. A communication device, characterized in that: The communication device comprises: A transceiver module, configured to receive configuration information from a network device; wherein the configuration information is used to configure a measurement target, the measurement target is a first frequency point, the configuration information includes synchronization information, the synchronization information includes a first serving cell on a second frequency point, and the first serving cell has a synchronization relationship with the measurement target; The processing module is used to measure the first cell on the first frequency point according to the synchronization information.

12. The communication device according to claim 11, characterized in that: The processing module is specifically used for: Determine the identifier of the SSB of the first cell according to the symbol position of the synchronization signal block SSB of the first cell on the first serving cell.

13. The communication device according to claim 12, characterized in that: The processing module is also used for: Determine not to read the identifier of the SSB of the first cell.

14. The communication device according to claim 12 or 13, characterized in that: The time for measuring the first cell does not include the time for reading the identifier of the SSB of the first cell.

15. The communication device according to claim 12 or 13, characterized in that: The processing module is specifically used for: If the synchronization accuracy of the measurement target is less than or equal to a preset threshold, the identifier of the SSB of the first cell is determined according to the symbol position of the SSB of the first cell on the first serving cell.

16. The communication device according to claim 15, characterized in that: The synchronization accuracy of the measurement target is the synchronization accuracy between the first cell and the first serving cell.

17. The communication device according to claim 15, characterized in that: The preset threshold is the length of two SSB symbols.

18. The communication device according to claim 11 or 12, characterized in that: The measurement is an out-of-frequency measurement.

19. A network device, characterized in that: The network equipment includes: A transceiver module is used to send configuration information to a communication device; wherein the configuration information is used to configure a measurement target, the measurement target is a first frequency point, the configuration information includes synchronization information, the synchronization information includes a first service cell on a second frequency point, the first service cell has a synchronization relationship with the measurement target, and the synchronization information is used to measure the first cell on the first frequency point.

20. The network device according to claim 19, characterized in that: The measurement is an out-of-frequency measurement.

21. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 8 is implemented.

22. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to claim 9 or 10 is implemented.

23. A communication device, characterized in that: The communication device comprises a processor and a communication interface, wherein the processor is configured to enable the method according to any one of claims 1 to 8 to be implemented.

24. A communication device, characterized in that: The communication device comprises a processor and a communication interface, wherein the processor is configured to enable the method according to claim 9 or 10 to be implemented.

25. A computer program product, characterized in that The computer program product comprises instructions, which, when executed, cause the method according to any one of claims 1 to 8 to be implemented.

26. A computer program product, characterized in that The computer program product comprises instructions which, when executed, cause the method according to claim 9 or 10 to be implemented.

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