Reference signal measuring and reporting method and related apparatus

Abstract

Provided in the embodiments of the present application are a reference signal measuring and reporting method and a related apparatus, which are used for improving the reliability and efficiency of data transmission. The method provided in the present application comprises: measuring a reference signal of a first cell, so as to obtain a channel measurement result, wherein the first cell is a candidate cell for a terminal device; receiving first signaling, wherein the first signaling is used for instructing the terminal device to hand over to the first cell; and sending the channel measurement result by means of a first physical uplink control channel (PUCCH) resource or a first physical uplink shared channel (PUSCH) resource, wherein the first PUCCH resource is a PUCCH resource of the first cell, or the first PUSCH resource is a PUSCH resource of the first cell.

Description

Reference signal measurement and reporting methods and related devices

[0001] This application claims priority to Chinese Patent Application No. 202411983546.3, filed on December 27, 2024, entitled “Reference Signal Measurement and Reporting Method and Related Apparatus”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a reference signal measurement and reporting method and related apparatus. Background Technology

[0003] Currently, access network equipment can configure reference signal resources (RSS) of one or more candidate cells for terminal equipment. The terminal equipment measures the RSS of these candidate cells and can then report the measurement results. The measurement results for each candidate cell include a RSS index and corresponding signal strength information (e.g., reference signal received power (RSRP)). Therefore, the access network equipment can determine whether the terminal equipment should perform cell handover and which candidate cell (i.e., the target cell) to hand over to based on the measurement results reported by the terminal equipment. However, currently, besides signal strength information, it does not support obtaining more channel state information (CSI) information from candidate cells before or during cell handover. This prevents the access network equipment from using appropriate scheduling methods to schedule data for the terminal equipment in the target cell, thus negatively impacting the reliability and efficiency of data transmission. Summary of the Invention

[0004] This application provides a reference signal measurement and reporting method and related apparatus, which are used to improve the reliability and efficiency of data transmission.

[0005] The first aspect of this application provides a reference signal measurement and reporting method. This method can be used in a terminal-side communication device, for example, executed by a terminal device. The terminal device can be a device or apparatus with a chip, or a device or apparatus with integrated circuits, or a chip, chip system, module, or control unit in the aforementioned device or apparatus; specific details are not limited in this application. It should be noted that, in this application, when referring to a terminal device, it can refer to the terminal device itself, or to the chip, functional module, or integrated circuit in the terminal device that performs the method provided in this application; specific details are not limited in this application. In the first aspect and its possible implementations, the method is described as being executed by a terminal device. The method includes: the terminal device measuring a reference signal of a first cell to obtain a channel measurement result, the first cell being a candidate cell of the terminal device; and the terminal device receiving a first signaling, the first signaling being used to instruct the terminal device to switch from the serving cell to the first cell. The terminal device transmits channel measurement results through the first physical uplink control channel (PUCCH) resource or the first physical uplink shared channel (PUSCH) resource, wherein the first PUCCH resource is the PUCCH resource of the first cell, or the first PUSCH resource is the PUSCH resource of the first cell.

[0006] In the above technical solution, when the terminal device receives the first signaling or before receiving the first signaling, the terminal device measures the reference signal of the first cell to obtain the channel measurement result. Then, the terminal device transmits the channel measurement result through the first PUCCH resource or the first PUSCH resource. This enables the acquisition of the channel measurement result of the first cell before the terminal device completes cell handover. This facilitates the network device to determine the transmission parameters based on the channel measurement result after the terminal device hands over to the first cell, and to schedule the terminal device through the transmission parameters. This improves the reliability and efficiency of data transmission. Furthermore, a reporting resource for the terminal device to report the channel measurement result is defined to realize the reporting of the channel measurement result. Optionally, the terminal device obtaining the channel measurement result by measuring the reference signal of the first cell can be replaced by describing it as: the terminal device obtaining the channel measurement result by measuring the reference signal resource of the first cell.

[0007] The second aspect of this application provides a reference signal measurement and reporting method. This method can be used in a network-side communication device, for example, executed by a network device. The network device can be a device or apparatus with a chip, or a device or apparatus with integrated circuits, or a chip, chip system, module, or control unit in the aforementioned device or apparatus; specific details are not limited in this application. It should be noted that, in this application, when referring to a network device, it can refer to the network device itself, or to the chip, functional module, or integrated circuit in the network device that performs the method provided in this application; specific details are not limited in this application. In the second aspect and its possible implementations, the method is described as being executed by a network device. The method includes: the network device transmitting a reference signal of a first cell, where the first cell is a candidate cell of a terminal device. The network device transmitting a first signaling instruction, which instructs the terminal device to switch from the serving cell to the first cell. The network device receiving channel measurement results through a first PUCCH resource or a first PUSCH resource. The first PUCCH resource is the PUCCH resource of the first cell. The first PUSCH resource is the PUSCH resource of the first cell. The channel measurement results are obtained by the terminal device measuring the reference signal of the first cell.

[0008] In the above technical solution, the network device sends a reference signal for a first cell, which is a candidate cell for the terminal device. The network device sends a first signaling message to instruct the terminal device to switch to the first cell. The network device receives channel measurement results through a first PUCCH resource or a first PUSCH resource. The first PUCCH resource is the PUCCH resource of the first cell. The first PUSCH resource is the PUSCH resource of the first cell. This facilitates the network device determining transmission parameters based on the channel measurement results after the terminal device switches to the first cell, and scheduling the terminal device using these transmission parameters. This improves the reliability and efficiency of data transmission. Furthermore, a reporting resource for the terminal device to report channel measurement results is defined to realize the reporting of channel measurement results. Optionally, the network device sending the reference signal for the first cell can be replaced by: the network device sending the reference signal resource for the first cell.

[0009] Based on the first or second aspect, in one possible implementation, the first PUCCH resource is located in the first bandwidth part (BWP) of the first cell; the first BWP includes any of the following: the active BWP of the first cell; the initial BWP of the first cell; the default BWP of the first cell; or the BWP indicated in the first signaling. This implementation defines the BWP where the first PUCCH resource is located, which is beneficial for the implementation of the scheme.

[0010] Based on the first or second aspect, in one possible implementation, the first signaling includes an identifier for the first BWP. In this implementation, the cell handover signaling indicates the first BWP, thereby facilitating the indication of the BWP where the first PUCCH resource resides.

[0011] Based on the first or second aspect, in one possible implementation, the first PUCCH resource is a PUCCH resource pre-configured by the network device for carrying channel measurement results; or, the first PUCCH resource is a PUCCH resource indicated by the first signaling. This first PUCCH resource can be configured or indicated in cell handover signaling, thereby facilitating the reporting of channel measurement results from candidate cells.

[0012] Based on the first aspect, in one possible implementation, the method further includes: a terminal device receiving first configuration information, the first configuration information being used to configure PUCCH resources corresponding to each candidate BWP in the first cell; wherein the first BWP is one of the candidate BWPs in the first cell, and the first PUCCH resource is associated with the first BWP; or, the first configuration information is used to configure a PUCCH resource of the first cell, the first PUCCH resource being the PUCCH resource configured by the first configuration information. This implementation provides two configuration methods for the first PUCCH resource: one is to configure one PUCCH resource for each candidate BWP, and the other is to configure one PUCCH resource for a candidate cell.

[0013] Based on the second aspect, in one possible implementation, the method further includes: the network device sending first configuration information, which is used to configure the PUCCH resource corresponding to each candidate BWP in the first cell; wherein the first BWP is one of the candidate BWPs in the first cell, and the first PUCCH resource is associated with the first BWP; or, the first configuration information is used to configure a PUCCH resource of the first cell, and the first PUCCH resource is the PUCCH resource configured by the first configuration information. This implementation provides two configuration methods for the first PUCCH resource: one is to configure one PUCCH resource for each candidate BWP, and the other is to configure one PUCCH resource for a candidate cell.

[0014] Based on the first or second aspect, in one possible implementation, the transmission time of the first PUCCH resource is the time when the first reference time has elapsed for a first duration. The transmission time of the first PUCCH resource is defined, thereby facilitating the terminal device to transmit channel measurement results through the first PUCCH resource.

[0015] Based on the first or second aspect, in one possible implementation, the first PUSCH resource is either a configured grant PUSCH (CG PUSCH) resource or a dynamic grant PUSCH (DG PUSCH) resource. Providing two forms of the first PUSCH resource enriches the implementation of the scheme.

[0016] Based on the first or second aspect, in one possible implementation, the first PUSCH resource is transmitted at the Xth transmission time of the first CG PUSCH resource after a second duration following the first reference time; X is an integer greater than or equal to 1; the first CG PUSCH resource is a CG PUSCH resource pre-configured by the network device for the first cell; or, the first CG PUSCH resource is the CG PUSCH resource indicated in the first signaling, or the CG PUSCH resource indicated by the pre-configured authorization configuration index included in the first signaling. In this implementation, it is specified that the first PUSCH resource can be the Xth transmission time of the first CG PUSCH resource configured or indicated by the network device. This facilitates the terminal device in transmitting the channel measurement result.

[0017] Based on the first or second aspect, in one possible implementation, the first reference time includes any of the following: the reception time of the first downlink control information (DCI) received by the terminal device, the first DCI being used to schedule the first signaling; the reception time of the first signaling received by the terminal device; the transmission time of the feedback signaling sent by the terminal device, the feedback signaling being the signaling fed back to the first signaling; the time at which the transmission time of the feedback signaling sent by the terminal device has elapsed after a third duration; the time at which the transmission time of the feedback signaling sent by the terminal device has elapsed after the third and fourth durations; or, the time at which the handover of the first cell is completed; wherein the fourth duration is the duration of the cell handover interruption, or the duration of the first cell handover interruption performed by the terminal device. This implementation provides several possible implementations of the first reference time. This enables the terminal device to measure the reference signal of the first cell during cell handover. This facilitates the network device in obtaining the channel measurement results of the first cell, enabling the network device to determine the transmission parameters of the first cell based on the channel measurement results, and to transmit the data with the terminal device through the transmission parameters. This improves data transmission performance.

[0018] Based on the first or second aspect, in one possible implementation, the fourth duration is determined by one or more of the following: the time for the terminal device to parse the configuration information of the first cell; the time for the terminal device to process the configuration information of the first cell; the time required for the terminal device to perform precise timing tracking of the first cell and obtain the timing information of the first cell; or, the processing time of the synchronization signal SSB of the first cell by the terminal device. Precise timing tracking can be understood as precise synchronization.

[0019] Based on the first or second aspect, in one possible implementation, the first PUSCH resource is the DG PUSCH resource called by the second DCI.

[0020] Based on the first or second aspect, in one possible implementation, the second DCI is further used to indicate that the DG PUSCH resources scheduled by the second DCI are used to carry channel measurement results. For example, the second DCI also includes a first field, the value of which is used to indicate that the DG PUSCH resources scheduled by the second DCI are used to carry channel measurement results.

[0021] Based on the first or second aspect, in one possible implementation, the second DCI is further used to indicate the triggering state of the serving cell of the terminal device indicated by the channel state information request field in the second DCI. For example, the second DCI also includes a second field, which is used to indicate the triggering state of the serving cell of the terminal device indicated by the channel state information request field in the second DCI.

[0022] Based on the first aspect, in one possible implementation, the terminal device transmits channel measurement results through a first PUSCH resource or a first PUCCH resource, including: transmitting the channel measurement results through the first PUSCH resource or the first PUCCH resource when a first condition is met; the first condition includes at least one of the following: before the terminal device receives the first signaling, the network device triggers a measurement of the reference signal of the first cell; before the terminal device receives the first signaling, the network device triggers a measurement of the reference signal of the first cell and the channel measurement results are reported after the terminal device receives the first signaling; after the terminal device receives the first signaling, the network device configures or triggers a measurement of the reference signal of the first cell; or, after the terminal device receives the first signaling, the network device configures or triggers a measurement of the reference signal of the first cell and reports it. This specifies some conditions for the terminal device to report channel measurement results, thereby enabling the terminal device to report channel measurement results under appropriate conditions and avoiding unnecessary reporting.

[0023] Based on the first aspect, in one possible implementation, before the terminal device measures the reference signal of the first cell to obtain the channel measurement result, the method further includes: the terminal device receiving a second signaling, the second signaling being used to trigger the measurement of the reference signal of the first cell. In this implementation, the terminal device first receives the signaling to trigger the measurement, and then the terminal device initiates the measurement.

[0024] Based on the second aspect, in one possible implementation, before the network device sends the reference signal of the first cell, the method further includes: the network device sending a second signaling message, the second signaling message being used to trigger a measurement of the reference signal of the first cell. In this implementation, the network device sends a signaling message to trigger the measurement, and then the network device sends the reference signal of the first cell.

[0025] Based on the first or second aspect, in one possible implementation, the first signaling and the second signaling are the same signaling. This reduces signaling overhead, eliminating the need to trigger the measurement of the reference signal through a dedicated signaling.

[0026] Based on the first or second aspect, in one possible implementation, the first signaling includes at least one of the following: trigger status information, report configuration identifier, reference signal resource identifier, or reference signal resource set identifier; wherein, the trigger status information is used to indicate a first trigger state, the first trigger state is associated with one or more report configurations of the serving cell of the terminal device, the one or more report configurations are associated with reference signal resources of the first cell, and the reference signal resources are used to carry the reference signal; the report configuration identifier is used to indicate the one or more report configurations, the one or more report configurations are associated with reference signal resources of the first cell; the reference signal resource identifier is used to indicate one or more reference signal resources, the one or more reference signal resources are used to carry the reference signal; the reference signal resource set identifier is used to indicate one or more reference signal resource sets, the reference signal resources in the one or more reference signal resource sets are used to carry the reference signal.

[0027] Based on the first aspect, in one possible implementation, the method further includes: the terminal device receiving second configuration information, the second configuration information being used to configure one or more reporting configurations for the serving cell.

[0028] Based on the second aspect, in one possible implementation, the method further includes: the network device sending second configuration information, the second configuration information being used to configure one or more reporting configurations for the serving cell.

[0029] Based on the first or second aspect, in one possible implementation, one or more report configurations are associated with reference signal resources of the first cell; or, each of the one or more report configurations is associated with a resource configuration, and the resource configurations associated with the one or more report configurations include the reference signal resources of the first cell. Two association methods for report configurations to reference signal resources are provided.

[0030] Based on the first aspect, in one possible implementation, the method further includes: the terminal device sending capability information, wherein the capability information includes at least one of the following: the terminal device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell before receiving the first signaling; the terminal device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell during the handover of the first cell; the terminal device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell after receiving the first signaling and before completing the handover of the first cell; the terminal device supports the serving cell of the terminal device triggering the acquisition of the channel measurement results of the first cell; or, the terminal device supports the serving cell triggering the acquisition and reporting of the channel measurement results of the first cell.

[0031] Based on the second aspect, in one possible implementation, the method further includes: network device receiving capability information, wherein the capability information includes at least one of the following: the terminal device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell before receiving the first signaling; the terminal device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell during the handover process of the first cell; the terminal device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell after receiving the first signaling and before completing the handover of the first cell; the terminal device supports the acquisition of the channel measurement results of the first cell triggered by the serving cell of the terminal device; or, the terminal device supports the acquisition and reporting of the channel measurement results of the first cell triggered by the serving cell.

[0032] A third aspect of this application provides a first communication device, comprising:

[0033] The processing module is used to measure the reference signal of the first cell to obtain the channel measurement results. The first cell is a candidate cell of the first communication device.

[0034] The transceiver module is used to receive a first signaling, which instructs the first communication device to switch to the first cell; and to transmit channel measurement results through a first PUCCH resource or a first PUSCH resource, wherein the first PUCCH resource is the PUCCH resource of the first cell, or the first PUSCH resource is the PUSCH resource of the first cell.

[0035] A fourth aspect of this application provides a second communication device, comprising:

[0036] The transceiver module is used to transmit a reference signal of a first cell, which is a candidate cell of the first communication device; transmit a first signaling, which is used to instruct the first communication device to switch to the first cell; and receive channel measurement results through a first PUCCH resource or a first PUSCH resource; wherein the first PUCCH resource is the PUCCH resource of the first cell; the first PUSCH resource is the PUSCH resource of the first cell; and the channel measurement results are obtained by the first communication device measuring the reference signal of the first cell.

[0037] Based on the third or fourth aspect, in one possible implementation, the first PUCCH resource is located in the first portion of the bandwidth BWP of the first cell; the first BWP includes any of the following: the active BWP of the first cell; the initial BWP of the first cell; the default BWP of the first cell; or, the BWP indicated in the first signaling.

[0038] Based on the third or fourth aspect, in one possible implementation, the first signaling includes the identifier of the first BWP.

[0039] Based on the third or fourth aspect, in one possible implementation, the first PUCCH resource is a PUCCH resource pre-configured by the second communication device for carrying channel measurement results; or, the first PUCCH resource is a PUCCH resource indicated by the first signaling.

[0040] Based on the third aspect, in one possible implementation, the transceiver module is further configured to: receive first configuration information, the first configuration information being used to configure the PUCCH resource corresponding to each candidate BWP in the first cell; wherein, the first BWP is one of the candidate BWPs in the first cell, and the first PUCCH resource is associated with the first BWP; or, the first configuration information being used to configure a PUCCH resource of the first cell, the first PUCCH resource being the PUCCH resource configured by the first configuration information.

[0041] Based on the fourth aspect, in one possible implementation, the transceiver module is further configured to: send first configuration information, the first configuration information being used to configure the PUCCH resource corresponding to each candidate BWP in the first cell; wherein, the first BWP is one of the candidate BWPs in the first cell, and the first PUCCH resource is associated with the first BWP; or, the first configuration information being used to configure a PUCCH resource of the first cell, the first PUCCH resource being the PUCCH resource configured by the first configuration information.

[0042] Based on the third or fourth aspect, in one possible implementation, the transmission time of the first PUCCH resource is the time when the first reference time has elapsed for the first duration.

[0043] Based on the third or fourth aspect, in one possible implementation, the first PUSCH resource is a CG PUSCH resource or a DG PUSCH resource.

[0044] Based on the third or fourth aspect, in one possible implementation, the first PUSCH resource is the Xth transmission opportunity of the first CG PUSCH resource after the second duration has elapsed from the first reference time; X is an integer greater than or equal to 1; the first CG PUSCH resource is a CG PUSCH resource pre-configured by the second communication device for the first cell; or, the first CG PUSCH resource is the CG PUSCH resource indicated in the first signaling, or the CG PUSCH resource indicated by the pre-configured authorization configuration index included in the first signaling.

[0045] Based on the third or fourth aspect, in one possible implementation, the first reference time includes any of the following: the reception time of the first communication device receiving the first DCI, the first DCI being used to schedule the first signaling; the reception time of the first communication device receiving the first signaling; the transmission time of the first communication device sending feedback signaling, the feedback signaling being signaling fed back to the first signaling; the time at which the transmission time of the first communication device sending feedback signaling occurs after a third duration; the time at which the transmission time of the first communication device sending feedback signaling occurs after both the third and fourth durations; or, the time at which the handover of the first cell is completed; wherein the fourth duration is the duration of the cell handover interruption.

[0046] Based on the third or fourth aspect, in one possible implementation, the fourth duration is determined by one or more of the following: the time for the first communication device to parse the configuration information of the first cell; the time for the first communication device to process the configuration information of the first cell; the time required for the first communication device to accurately track the first cell at precise timing and obtain the timing information of the first cell; or, the processing time of the synchronization signal SSB of the first cell by the first communication device.

[0047] Based on the third or fourth aspect, in one possible implementation, the first PUSCH resource is the DG PUSCH resource called by the second DCI.

[0048] Based on the third or fourth aspect, in one possible implementation, the second DCI is also used to indicate that the DG PUSCH resources scheduled by the second DCI are used to carry channel measurement results. For example, the second DCI also includes a first field, the value of which is used to indicate that the DG PUSCH resources scheduled by the second DCI are used to carry channel measurement results.

[0049] Based on the third or fourth aspect, in one possible implementation, the second DCI is further used to indicate the triggering state of the serving cell of the first communication device indicated by the channel state information request field in the second DCI. For example, the second DCI also includes a second field used to indicate the triggering state of the serving cell of the first communication device indicated by the channel state information request field in the second DCI.

[0050] Based on the third aspect, in one possible implementation, the transceiver module is specifically configured to: transmit channel measurement results via a first PUSCH resource or a first PUCCH resource when a first condition is met; the first condition includes at least one of the following: before the first communication device receives the first signaling, the second communication device triggers the measurement of the reference signal of the first cell; before the first communication device receives the first signaling, the second communication device triggers the measurement of the reference signal of the first cell and the channel measurement results are reported after the first communication device receives the first signaling; after the first communication device receives the first signaling, the second communication device configures or triggers the measurement of the reference signal of the first cell; or, after the first communication device receives the first signaling, the second communication device configures or triggers the measurement of the reference signal of the first cell and reports it.

[0051] Based on the third aspect, in one possible implementation, the transceiver module is also used to: receive a second signaling, which is used to trigger the measurement of the reference signal of the first cell.

[0052] Based on the fourth aspect, in one possible implementation, the transceiver module is further configured to: send a second signaling message, which is used to trigger a measurement of the reference signal of the first cell.

[0053] Based on the third or fourth aspect, in one possible implementation, the first signaling and the second signaling are the same signaling.

[0054] Based on the third or fourth aspect, in one possible implementation, the first signaling includes at least one of the following: trigger status information, report configuration identifier, reference signal resource identifier, or reference signal resource set identifier; wherein, the trigger status information is used to indicate a first trigger state, the first trigger state is associated with one or more report configurations of the serving cell of the first communication device, the one or more report configurations are associated with reference signal resources of the first cell, and the reference signal resources are used to carry the reference signal; the report configuration identifier is used to indicate the one or more report configurations, the one or more report configurations are associated with reference signal resources of the first cell; the reference signal resource identifier is used to indicate one or more reference signal resources, the one or more reference signal resources are used to carry the reference signal; the reference signal resource set identifier is used to indicate one or more reference signal resource sets, and the reference signal resources in the one or more reference signal resource sets are used to carry the reference signal.

[0055] Based on the third aspect, in one possible implementation, the transceiver module is further configured to: receive second configuration information, which is used to configure one or more report configurations of the serving cell.

[0056] Based on the fourth aspect, in one possible implementation, the transceiver module is further configured to: send second configuration information, which is used to configure one or more report configurations of the serving cell.

[0057] Based on the first or second aspect, in one possible implementation, one or more reporting configurations are associated with the reference signal resources of the first cell; or, each of the one or more reporting configurations is associated with a resource configuration, and the resource configuration associated with the one or more reporting configurations includes the reference signal resources of the first cell.

[0058] Based on the third aspect, in one possible implementation, the transceiver module is further configured to: receive capability information, wherein the capability information includes at least one of the following: the first communication device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell before receiving the first signaling; the first communication device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell during the handover process of the first cell; the first communication device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell after receiving the first signaling and before completing the handover of the first cell; the first communication device supports the acquisition of the channel measurement results of the first cell triggered by the serving cell of the first communication device; or, the first communication device supports the acquisition and reporting of the channel measurement results of the first cell triggered by the serving cell.

[0059] Based on the fourth aspect, in one possible implementation, the transceiver module is further configured to: transmit capability information, wherein the capability information includes at least one of the following: the first communication device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell before receiving the first signaling; the first communication device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell during the handover process of the first cell; the first communication device supports reporting the measurement results of the reference signal and / or channel measurement of the first cell after receiving the first signaling and before completing the handover of the first cell; the first communication device supports the acquisition of the channel measurement results of the first cell triggered by the serving cell of the first communication device; or, the first communication device supports the acquisition and reporting of the channel measurement results of the first cell triggered by the serving cell.

[0060] A fifth aspect of this application provides a communication device comprising a processor and a memory. The memory stores computer programs or computer instructions, and the processor is configured to call and execute the computer programs or computer instructions stored in the memory, causing the processor to implement any one of the implementation methods of the first to second aspects.

[0061] Optionally, the communication device may also include a transceiver, and the processor is used to control the transceiver to send and receive signals.

[0062] A sixth aspect of this application provides a communication device including a processor and an interface circuit. The processor is configured to communicate with other devices via the interface circuit and to perform the methods described in any one of the first to second aspects. The processor may include one or more devices.

[0063] A seventh aspect of this application provides a communication device including a processor for connection to a memory, for calling a program stored in the memory to execute the method described in any one of the first or second aspects. The memory may be located within or outside the communication device. The processor may include one or more processors.

[0064] In one implementation, the terminal device of the first aspect and the network device of the second aspect can be a chip or a chip system.

[0065] The first communication device shown in the third aspect and the communication devices shown in the fifth to seventh aspects can all be terminal devices, communication modules in terminal devices, or chips in terminal devices that are responsible for communication functions.

[0066] The eighth aspect of this application provides a computer program product, including a computer program or computer instructions, which, when run on a computer or processor, implement any one of the implementations of the first aspect to the second aspect.

[0067] The ninth aspect of this application provides a computer-readable storage medium for storing a computer program or computer instructions that, when executed on a computer or processor, implement any one of the implementations of the first to second aspects.

[0068] The tenth aspect of this application provides a chip device, including a processor for calling a computer program or computer instructions in memory to cause the processor to execute any one of the implementations of the first to second aspects described above.

[0069] Optionally, the processor is coupled to the memory via an interface.

[0070] Optionally, the memory is either built into the chip device or connected to the chip device.

[0071] The eleventh aspect of this application provides a communication system, which includes a terminal device and a network device; the terminal device is used to perform the method as shown in the first aspect, and the network device is used to perform the method as shown in the second aspect.

[0072] In the above technical solution, the terminal device measures the reference signal of the first cell to obtain channel measurement results. The first cell is a candidate cell for the terminal device. Then, the terminal device receives a first signaling message, which instructs the terminal device to hand over to the first cell. The terminal device transmits the channel measurement results through a first PUCCH resource or a first PUSCH resource. The first PUCCH resource is the PUCCH resource of the first cell. The first PUSCH resource is the PUSCH resource of the first cell. Therefore, it can be seen that the terminal device measures the reference signal of the first cell to obtain channel measurement results when or before receiving the first signaling message. Then, the terminal device transmits the channel measurement results through the first PUCCH resource or the first PUSCH resource. This allows the terminal device to obtain the channel measurement results of the first cell before the cell handover is completed. This facilitates the network device to determine transmission parameters based on the channel measurement results after the terminal device hands over to the first cell, and to schedule the terminal device using these transmission parameters. This improves the reliability and efficiency of data transmission. Attached Figure Description

[0073] Figure 1 is a schematic diagram of an open radio access network (open RAN, O-RAN, or ORAN) system according to an embodiment of this application;

[0074] Figure 2 is a structural schematic diagram of an access network device according to an embodiment of this application;

[0075] Figure 3 is a schematic diagram of a communication system according to an embodiment of this application;

[0076] Figure 4 is another schematic diagram of the communication system according to an embodiment of this application;

[0077] Figure 5 is a schematic diagram of an application scenario of an embodiment of this application;

[0078] Figure 6 is a schematic diagram of the structure of a media or medium access control element (MAC CE) according to an embodiment of this application.

[0079] Figure 7 is a schematic diagram of an embodiment of the reference signal measurement and reporting method of this application;

[0080] Figure 8 is a structural schematic diagram of a communication device according to an embodiment of this application;

[0081] Figure 9 is another structural schematic diagram of the communication device according to an embodiment of this application;

[0082] Figure 10 is another structural schematic diagram of the communication device according to an embodiment of this application;

[0083] Figure 11 is a structural schematic diagram of a terminal device according to an embodiment of this application;

[0084] Figure 12 is a schematic diagram of a network device according to an embodiment of this application. Detailed Implementation

[0085] This application provides a reference signal measurement and reporting method and related apparatus to improve the reliability and efficiency of data transmission.

[0086] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0087] References to "one embodiment" or "some embodiments" as described in this application mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0088] In the description of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a and b and c. Where a, b, and c can be single or multiple.

[0089] It is understood that in this application, "instruction" can include direct instruction, indirect instruction, explicit instruction, and implicit instruction. When describing a certain instruction information for the purpose of instructing A, it can be understood that the instruction information carries A, directly instructs A, or indirectly instructs A.

[0090] The technical solutions of this application can be applied to various communication systems. For example, 5th generation (5G) systems, new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, universal mobile telecommunication system (UMTS), future mobile communication systems, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, Internet of Things (IoT) communication systems, industrial internet communication systems, or satellite communication systems, etc. The wireless communication systems involved in this application also include, but are not limited to, narrowband Internet of Things (NB-IoT) systems.

[0091] The communication systems to which this application applies include terminal equipment and network equipment. Terminal equipment and network equipment are described below.

[0092] Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), fixed wireless access (FWA), customer premises equipment (CPE), etc., refers to devices that include wireless communication capabilities (providing voice / data connectivity to users). Examples include handheld devices with wireless connectivity, in-vehicle devices, and machine-type communication (MTC) terminals. Currently, terminal devices can include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving (e.g., drones, vehicles), wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. For example, wireless terminals in self-driving can be drones, helicopters, or airplanes. For example, wireless terminals in vehicle-to-everything (V2X) can be in-vehicle equipment, vehicle-mounted equipment, in-vehicle modules, vehicles, or ships. Wireless terminals in industrial control can be cameras, robots, or robotic arms. Wireless terminals in smart homes can be televisions, air conditioners, robot vacuums, speakers, or set-top boxes. The terminal device can also be a device or module that is connected to the communication system shown above and has corresponding communication functions. The terminal device usually contains a communication module, circuit or chip that performs the corresponding communication function, and the terminal device is also configured with program instructions for performing the corresponding communication function.

[0093] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus with integrated circuitry, or a chip, chip system, module, or control unit in the device or apparatus shown above; the specific application is not limited to any particular type. It should also be noted that in this application, when referring to a terminal device, it can refer to the terminal device itself, or to the chip, functional module, or integrated circuit within the terminal device that performs the method provided in this application; the specific application is not limited to any particular type.

[0094] A network device is a device deployed in a radio access network to provide wireless communication functions for terminal devices. Network devices may also be referred to as radio access network (RAN) entities, access nodes, network nodes, access network equipment, or communication devices, etc.

[0095] Specifically, the network equipment can be access network equipment for cellular systems related to the 3rd Generation Partnership Project (3GPP). For example, fourth-generation (4G) mobile communication systems, 5G mobile communication systems, or future mobile communication systems. The network equipment can also be access network equipment in open RAN (O-RAN or ORAN) or cloud radio access network (CRAN). Alternatively, the network equipment can also be access network equipment in a communication system resulting from the integration of two or more of the above communication systems.

[0096] Network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WIFI) systems, macro base station, micro base station, wireless relay node, donor node, radio controller in CRAN scenarios, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP). Network equipment can also be access network equipment in 5G mobile communication systems. For example, a next-generation NodeB (gNB), TRP, TP in a new radio (NR) system, or one or a group of antenna panels (including multiple antenna panels) in a base station in a 5G mobile communication system. Alternatively, network equipment can also be network nodes that constitute a gNB or transmission point. For example, a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. CU and DU can be set up separately or included in the same network element. For example, a BBU. RU can be included in radio equipment or radio units. For example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). Alternatively, network equipment can also be a server, wearable device, vehicle, or in-vehicle equipment, etc. For example, in V2X technology, network equipment can be a roadside unit (RSU).

[0097] It should be noted that CU (or CU-CP and CU-UP), DU, or RU may have different names in different systems, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called an open centralized unit (O-CU) or an open CU, DU can also be called an open distributed unit (O-DU), centralized unit control plane (CU-CP) can also be called an open centralized unit control plane (O-CU-CP) or an open CU-CP, centralized unit user plane (CU-UP) can also be called an open centralized unit user plane (O-CU-UP) or an open CU-UP, and RU can also be called an open radio unit (O-RU). This application does not impose any specific limitations. Any of the units CU, CU-CP, CU-UP, DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0098] Figure 1 is a schematic diagram of an ORAN system according to an embodiment of this application. The ORAN system includes a core network, access network equipment, and UE. Optionally, the ORAN system may also include other components besides those shown in Figure 1, which is not limited in this application.

[0099] Access network devices can communicate with the core network (CN) via a backhaul link. Access network devices can also communicate with the UE via an air interface. Specifically, the BBU in the access network device communicates with the core network via a backhaul link. The RU in the access network device communicates with at least one UE via an air interface. The BBU communicates with at least one RU via a fronthaul link; the BBU and RU may or may not be co-located.

[0100] A BBU consists of at least one CU and at least one DU, and the CU and DU can communicate with each other via at least one midhaul link.

[0101] In one possible implementation, as shown in Figure 2, the CU is a logical node carrying the radio resource control (RRC), service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions of the access network equipment. The CU can connect to network nodes such as the core network through interfaces, such as the E2 interface. Optionally, the CU can have some core network functions. The CU (e.g., the PDCP layer and / or higher) connects to the DU (e.g., the radio link control (RLC) layer and lower layers of the DU) through interfaces, such as the F1 interface. Optionally, the F1 interface can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, defining the signaling procedures of F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0102] Optionally, as shown in Figure 2, the CU can be split into CU-CP and CU-UP. CU-CP is a logical node carrying the control plane (PDCP-C) layer, which carries the RRC layer and the Packet Data Convergence Protocol layer, and is used to implement the CU's control plane functions. CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements in the core network can be access and mobility function (AMF) network elements, such as the access and mobility management (AMF) function in a 5G system. The AMF network element is responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration with the network, and terminal device handover. CU-UP is a logical node carrying the user plane (PDCP-U) layer, which carries the SDAP layer and the Packet Data Convergence Protocol layer, and is used to implement the CU's user plane functions. CU-UP can interact with network elements in the core network used to implement user plane functions. In the core network, network elements used to implement user plane functions, such as the user plane function (UPF) in a 5G system, are responsible for forwarding and receiving data in terminal devices. The above configuration of CU and DU is merely an example; in practical applications, the functions of CU and DU can be configured as needed. For example, CU or DU can be configured to have more protocol layer functions, or to have only some protocol layer processing functions. For instance, some RLC layer functions and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of CU or DU can be divided according to service type or other system requirements, such as by latency, placing functions that need to meet low latency requirements in the DU and functions that do not need to meet such latency requirements in the CU.

[0103] In one possible implementation, as shown in Figure 2, the DU is a logical node carrying the RLC layer, the medium or media access control (MAC) layer, the higher physical layer (Higher PHY) layer, and other functions. In some examples, the DU can control at least one RU. The DU connects to the RU through interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0104] In one possible implementation, as shown in Figure 2, the RU is a logical node carrying both lower physical layer (PHY) and radio frequency (RF) processing. In some examples, the RU may be a 3GPP TRP, a remote radio head (RRH), or other similar entity. In some examples, the Low-PHY includes PHY processing functions such as fast fourier transform (FFT), inverse fast fourier transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more UEs via a radio link.

[0105] The DU and RU can be co-located or not. The DU and RU exchange control plane and user plane information via a fronthaul link through the Lower-Layer Split CUS-Plane (LLS-CUS) interface. LLS-CUS may include a Lower-Layer Split control (LLS-C) interface and a Lower-Layer Split user (LLS-U) interface, providing the control plane (C-Plane) and user plane (U-Plane) respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and RU. The DU and RU exchange management information via a Lower-Layer Split management (LLS-M) interface on the fronthaul link; the management plane (M-Plane) refers to non-real-time management operations between the DU and RU.

[0106] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0107] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples.

[0108] It should be noted that network devices can be devices or apparatuses with chips, or devices or apparatuses with integrated circuits, or chips, chip systems, modules, or control units in the devices or apparatuses shown above; this application does not impose any specific limitations. It should also be noted that in this application, the term "network device" can refer to the network device itself, or to chips, functional modules, or integrated circuits within the network device that implement the methods provided in this application; this application does not impose any specific limitations.

[0109] To facilitate understanding of the technical solutions of the embodiments of this application, the following, in conjunction with Figures 3 and 4, illustrates two possible communication systems to which the methods provided in the embodiments of this application are applicable.

[0110] Figure 3 is a schematic diagram of a communication system according to an embodiment of this application. As shown in Figure 3, the communication system includes at least one network device and at least one terminal device. For example, network device 311, terminal device 321, and terminal device 322 are shown in Figure 3. Network device 311 can transmit data with terminal device 321 and terminal device 322. The technical solution of this application can be executed between network device 311 and terminal device 321 or terminal device 322.

[0111] Figure 4 is another schematic diagram of the communication system according to an embodiment of this application. As shown in Figure 4, the communication system may include at least two network devices and at least one terminal device. For example, network devices 411, 412, 413, and terminal device 421 are shown in Figure 4. Terminal device 421 may be provided with communication services by multiple network devices. For example, as shown in Figure 4, network device 411 may transmit with terminal device 421, network device 412 may transmit with terminal device 421, and network device 413 may transmit with terminal device 421. That is, a terminal device may be provided with communication services by multiple network devices simultaneously. The technical solutions of this application can be implemented between terminal device 421 and network devices 411, 412, or 413.

[0112] To facilitate understanding of the technical solution of this application, some technical terms involved in this application will be introduced below.

[0113] 1. Beam: A beam is a communication resource. A beam can be wide, narrow, or other types of beams, and the technology used to form a beam can be beamforming technology or other techniques. Beamforming technology can specifically be digital beamforming technology, analog beamforming technology, and hybrid digital / analog beamforming technology. Different beams can be considered different resources.

[0114] In the NR protocol, beaming can be referred to as a spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial domain setting, spatial setting, quasi-colocation (QCL) information, QCL assumption, or QCL indication, etc. Beaming can be indicated by transmission configuration indicator state (TCI-state) parameters or by spatial relation parameters. Therefore, in this application, beaming can be replaced by spatial domain filter, spatial filter, spatial parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL assumption, QCL indication, TCI-state (including uplink TCI-state and downlink TCI-state), or spatial relation, etc. The above terms are also equivalent to each other. Beaming can also be replaced with other beaming terms, which are not limited herein.

[0115] The beam used to transmit signals can be referred to as a transmission beam (Tx beam), a spatial domain transmission filter, a spatial transmission filter, a spatial domain transmission parameter, a spatial transmission parameter, a spatial domain transmission setting, or a spatial transmission setting. The transmission beam can also be called a downlink beam. In this application, the transmission beam, downlink beam, channel state information reference signal (CSI-RS), TCI State, downlink / joint TCI state, synchronization signal and PBCH block (SSB), and tracking reference signal (TRS) are interchangeable. The DL / joint TCI state can also be called a DL-orjointTCI state; that is, the DL / joint TCI state and the DL-orjointTCI state are interchangeable.

[0116] The beam used to receive signals can be referred to as a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial reception parameter, a spatial domain reception setting, or a spatial reception setting. The uplink transmit beam can be indicated by any of the following: spatial relation, uplink TCI-state, or a sounding reference signal (SRS) resource (indicating the transmit beam using that SRS). The receive beam can also be referred to as the uplink beam. In this application, the receive beam, uplink beam, uplink transmission configuration indication state (UL TCI state), DL / joint TCI state, sounding reference signal (SRS), CSI-RS, SSB, and TRS can be interchanged.

[0117] The transmitting beam can refer to the distribution of signal strength in different directions in space after a signal is transmitted through an antenna, while the receiving beam can refer to the distribution of signal strength in different directions in space of a wireless signal received from an antenna.

[0118] Furthermore, the beam can be a wide beam, a narrow beam, or other types of beam. The beamforming technology can be beamforming technology or other technologies. Specifically, beamforming technology can be digital beamforming technology, analog beamforming technology, hybrid digital beamforming technology, or hybrid analog beamforming technology, etc.

[0119] Beams are generally associated with resources. For example, during beam measurement, network devices measure different beams using different resources. The terminal device provides feedback on the measured resource quality, allowing the network device to determine the quality of the corresponding beam. During data transmission, beam information is also indicated through its corresponding resources. For instance, network devices use the Transmission Configuration Indication (TCI) field in the DCI to indicate the physical downlink shared channel (PDSCH) beam information of the terminal device.

[0120] In one possible implementation, multiple beams with the same or similar communication characteristics are considered as a single beam. A beam may include one or more antenna ports for transmitting data channels, control channels, and probe signals, etc. The one or more antenna ports forming a beam can also be considered as a set of antenna ports.

[0121] 2. Quasi-Co-location: Quasi-co-location indicates that multiple resources share one or more identical or similar communication characteristics. For multiple resources with quasi-co-location, identical or similar communication configurations can be used. For example, if two antenna ports have quasi-co-location, the large-scale channel characteristics of one port transmitting one symbol can be inferred from the large-scale channel characteristics of the other port transmitting one symbol. Large-scale characteristics can include: delay spread, average delay, Doppler spread, Doppler shift, average gain, receive parameters, terminal equipment receive beam number, transmit / receive channel correlation, receive angle of arrival, spatial correlation of receiver antennas, angel-of-arrival (AoA), average angle of arrival, AoA spread, etc. Specifically, this co-location indication is used to indicate whether at least two sets of antenna ports have a co-location relationship, including: the co-location indication indicating whether the channel state information reference signals transmitted by at least two sets of antenna ports originate from the same transmission point, or the co-location indication indicating whether the channel state information reference signals transmitted by at least two sets of antenna ports originate from the same beamgroup.

[0122] 3. TCI: Also known as TCI state. In both uplink and downlink transmission, correct beamforming is required for proper transmission between network devices and terminal devices. In downlink transmission, the network device needs to indicate its downlink transmit beam to the terminal device. The terminal device can then determine a suitable receive beam to receive information from the network device. In uplink transmission, the network device also needs to indicate to the terminal device which uplink transmit beam it uses to send information. The network device can determine the uplink transmit beam with better signal quality for the terminal device. Both uplink and downlink transmit beams can be indicated by their respective TCI states. Specifically, the downlink transmit beam can be indicated by the downlink TCI state, and the uplink transmit beam by the uplink TCI state.

[0123] In the 3GPP protocol, network devices can indicate the TCI status to terminal devices through the TCI field in the DCI (Digital Channel Identity). The TCI field is 3 bits in size and can be represented by 8 different field values ​​(codepoints). Each field value of the TCI field can be associated with an index of a TCI status. This TCI status index uniquely identifies a TCI status, which can be a downlink TCI status or an uplink TCI status. Each field value of the TCI field can also be associated with two TCI status indices, which uniquely identify two TCI statuses, including one downlink TCI status and one uplink TCI status.

[0124] The downlink TCI status includes several parameters that terminal devices can use to determine information related to the downlink transmit beam, thereby determining the appropriate receive beam to receive information from the network device. The TCI status is configured by the network device for each terminal device, and the structure of the downlink TCI status is shown below:

[0125] Each TCI state includes its own index (tci-StateId) and two quasi-colocation information (QCL-info) entries. Each QCL-info entry includes a reference signal resource, indicating that the downlink transmission for that TCI state should use the same downlink timing, frequency offset, or receive beam as that reference signal resource. This is determined by the type of the QCL-info entry. The QCL type can have four values: {typeA, typeB, typeC, typeD}. When the QCL type is typeA, typeB, or typeC, the downlink transmission should use the same downlink timing and frequency offset as that reference signal resource. When the QCL type is typeD, the downlink transmission should use the same receive beam as that reference signal resource. Of the two QCL-info entries mentioned above, one is typeD, and the other is typeA, typeB, or typeC. The terminal device can determine which receive beam to use to receive the corresponding downlink transmission by using the typeD QCL-info entry. The specific execution steps are as follows:

[0126] Network devices indicate a specific downlink TCI state to terminal devices via DCI. The terminal device identifies a reference signal resource in the QCL information for this downlink TCI state (type D). The terminal device then uses the receive beam of this reference signal resource as the receive beam for downlink transmission. It should be noted that the receive beam of this reference signal resource is obtained by the terminal device in advance through a beam management process. Through this beam management process, the terminal device can determine which receive beam is optimal for receiving the reference signal resource and select that beam as the receive beam for that reference signal resource.

[0127] The uplink TCI state includes a reference signal resource, which indicates that uplink transmissions using this TCI state should employ the same uplink transmit beam as the reference signal resource. The terminal device can determine which transmit beam to use for uplink transmission by using this reference signal resource. In the uplink TCI state, the reference signal resource is not included in the QCL-info and does not distinguish between QCL types, because it does not need to reference uplink timing and frequency offset information; only the uplink transmit beam needs to be referenced. The structure of the uplink TCI state is as follows:

[0128] The specific execution steps are as follows:

[0129] Network devices indicate a specific uplink TCI state to terminal devices via DCI. The terminal device then determines the reference signal resource within that uplink TCI state. The terminal device uses the transmission beam of this reference signal resource as its uplink transmission beam. It should be noted that the transmission beam of this reference signal resource is obtained by the terminal device in advance through a beam management process.

[0130] The following describes the configuration, activation, and indication of TCI status.

[0131] TCI-state configuration: Network devices configure multiple TCI-states to terminal devices via RRC signaling. Each of these TCI-states includes a QCL-Info of type type D. Network devices can also configure TCI-states that do not include a QCL-Info of type type D; however, these TCI-states are not used for data transmission beam indication and will not be discussed further here.

[0132] TCI-state activation: After configuring multiple TCI-states on a network device, eight of them need to be activated via MAC CE. These eight TCI-states correspond one-to-one with the eight values ​​of the TCI field in the DCI. That is, which eight TCI-states correspond to the eight values ​​of the TCI field in the DCI is determined by MAC CE.

[0133] TCI-state indication: Network devices indicate a specific TCI-state through the TCI field in the DCI. For example, if the TCI field value in the DCI sent by the network device to the terminal device is 000, it indicates that the data transmission beam uses the TCI state corresponding to 000. The reference signal contained in the type D QCL-Info within this TCI state is the channel state information-reference signal (CSI-RS) with index #1, indicating that the beam used for data transmission is the same as the receiving beam corresponding to CSI-RS with index #1. The receiving beam corresponding to CSI-RS with index #1 can be determined through beam measurement procedures and is known to the terminal device. Therefore, by using the specific value of the TCI field, the terminal device can determine the beam corresponding to the data transmission beam and thus use the appropriate beam to send or receive data.

[0134] It should be noted that the three descriptions of TCI state, TCI-state, and TCI state in this article can be used interchangeably.

[0135] 4. Unified TCI.

[0136] Release 17 introduces Unified TCI, a unified beam indication framework that allows network devices to indicate a common beam for end devices. This common beam can be used simultaneously for multiple channels and / or multiple reference signals. The common beam can be an uplink common beam, a downlink common beam, or an uplink-downlink common beam. The end device can use this common beam in subsequent transmissions. That is, the network device can indicate an uplink common beam for the transmission of multiple uplink channels and / or multiple uplink reference signals. It can also indicate a downlink common beam for the transmission of multiple downlink channels and / or multiple downlink reference signals. Alternatively, it can indicate an uplink-downlink common beam for the transmission of multiple uplink channels and / or multiple uplink reference signals, as well as multiple downlink channels and / or multiple downlink reference signals. In other words, the uplink-downlink common beam can be used for both uplink and downlink transmissions.

[0137] In Release 17 and later, terminal devices can be configured with two TCI states: DL / joint TCI state and UL TCI state. Here, DL stands for Downlink and UL stands for Uplink.

[0138] The terminal can be configured with DL / joint TCI states (up to 128) and UL TCI states (up to 64) simultaneously.

[0139] In the RRC signaling configuration (serving cell config), the network device can configure the TCI mode currently used by the terminal as either joint or separate. In joint mode, it indicates that a joint TCI state can be used for uplink and downlink transmission simultaneously; in separate mode, the network device needs to indicate that the DL TCI state and UL TCI state are used for uplink and downlink transmission respectively.

[0140] When the terminal device receives the TCI state activation signaling indicated by MAC-CE, the activation signaling includes the TCI state identifier (ID). The terminal device determines which TCI is activated by MAC-CE based on the RRC signaling.

[0141] 5. Resources.

[0142] In communication protocols, reference signals are configured in the form of resources. Network devices configure various reference signals to terminals in the form of resources. A resource is a configuration information unit, which usually includes parameters related to a reference signal, such as the time-frequency resource location of the reference signal, the number of ports, the time domain type (periodic / semi-static / aperiodic), etc.

[0143] Resources can be either uplink or downlink signal resources. Uplink signals include, but are not limited to, SRS and demodulation reference signal (DMRS). Downlink signals include, but are not limited to, CSI-RS, cell-specific reference signal (CS-RS), user equipment-specific reference signal (US-RS), demodulation reference signal (DMRS), and synchronization signal / physical broadcast channel block (SS / PBCH block). The SS / PBCH block can be abbreviated as synchronization signal block (SSB). CSI-RS also includes: Non-Zero Power CSI-RS (NZP CSI-RS) and Zero Power CSI-RS (ZP CSI-RS).

[0144] In this application, the terms "reference signal" and "reference signal resource" can be used interchangeably.

[0145] 6. Reference signal.

[0146] The reference signal can be the reference signal of the serving cell. For example, the serving cell can be a primary cell (Pcell), a secondary cell (Scell), or a primary secondary cell (PScell). Cells using the primary component carrier (PCC) can be called Pcells, and cells using the secondary component carrier (SCC) can be called Scells.

[0147] The reference signal can be the reference signal of the neighboring cells of the serving cell (such as the reference signal of the cell corresponding to the additional physical cell identifier (additional PCI)).

[0148] Reference signals can also be reference signals associated with the handover candidate cell configuration. Handover candidate cells can also be called candidate cells or neighboring cells. Handover candidate cells can be the current serving cell or a non-serving cell. The physical cell identifier (PCI) of the handover candidate cell is different from that of the current primary cell (PCell).

[0149] 7. PUCCH resource configuration.

[0150] The configuration of the PUCCH resource is shown below:

[0151] In the PUCCH resource configuration described above, the PUCCH resource identifier (pucch-ResourceId) field indicates the identifier of the PUCCH resource. The value of pucch-ResourceId can be from 0 to 127. The starting physical resource block (starting PRB) field indicates the identifier of the starting PRB. The intraSlotFrequencyHopping field indicates that intraSlot Frequency Hopping is enabled. If this intraSlot Frequency Hopping field exists, it indicates that intraSlot Frequency Hopping is enabled. The second Hopping Physical Resource Block (secondHopPRB) field indicates the identifier of the first PRB where the PUCCH is located after frequency hopping when intraSlot or interSlot Frequency Hopping is enabled. The Format field indicates the selected PUCCH format. For example, Format 0, Format 1, Format 2, Format 3, or Format 4.

[0152] 8. Reference signal resource index, reference signal resource identifier, reference signal resource indicator.

[0153] Specifically, the network device configures one or more reference signal resources for the terminal device. These reference signal resources are used to carry reference signals. In this application, the terms "reference signal" and "reference signal resource" are interchangeable. During configuration, each reference signal resource corresponds to a reference signal resource index or a reference signal resource identifier (id) for distinguishing reference signal resources. Furthermore, the network device can configure one or more sets of reference signal resources for the terminal device. Each set of reference signal resources includes one or more reference signal resources, and each set corresponds to a reference signal resource set identifier. Within each set, each reference signal resource corresponds to a reference signal resource indicator. A reference signal resource indicator of 0 indicates the first reference signal resource in the set, a reference signal resource indicator of 1 indicates the second reference signal resource, and so on. When the network device indicates a reference signal resource within the set, or when the terminal device reports a measurement result for a reference signal resource within the set, the reference signal resource indicator can be used to indicate the corresponding reference signal resource.

[0154] For example, a network device configures one or more NZP CSI-RS resources for a terminal device. These NZP CSI-RS resources are used to carry NZP CSI-RS signals. The terms "NZP CSI-RS" and "NZP CSI-RS resource" are interchangeable. Each NZP CSI-RS resource corresponds to a non-zero power CSI-RS resource identifier (NZP-CSI-RS-ResourceId) used to distinguish each NZP CSI-RS resource. Furthermore, a network device can configure one or more NZP CSI-RS resource sets. Each NZP CSI-RS resource set includes one or more NZP CSI-RS resources, and each NZP CSI-RS resource set includes an NZP CSI-RS resource set identifier (NZP-CSI-RS-ResourceSetId). Within each NZP CSI-RS resource set, each NZP CSI-RS resource corresponds to a CSI-RS resource indicator (CRI). For example, a CRI of 0 indicates the first NZP CSI-RS resource in the NZP CSI-RS resource set, a CRI of 1 indicates the second NZP CSI-RS resource in the same set, and so on. When a network device instructs a network device to measure and report an NZP CSI-RS resource in a specific NZP CSI-RS resource set, or when a terminal device measures and reports an NZP CSI-RS resource in a specific NZP CSI-RS resource set, the CRI can be used to indicate the corresponding NZP CSI-RS resource. The NZP-CSI-RS-ResourceId can be understood as a global identifier among all configured NZP-CSI-RS-Resources, and the CRI can be understood as a local identifier among all NZP-CSI-RS-Resources in the NZP CSI-RS resource set.

[0155] For example, a network device configures one or more ZP CSI-RS resources for a terminal device. These ZP CSI-RS resources are used to carry ZP CSI-RS. The terms "ZP CSI-RS" and "ZP CSI-RS resource" are often used interchangeably. Each NP CSI-RS resource corresponds to a zero-power CSI-RS resource identifier (ZP-CSI-RS-ResourceId) used to distinguish each ZP CSI-RS resource. Furthermore, a network device can configure one or more ZP CSI-RS resource sets. Each ZP CSI-RS resource set includes one or more ZP CSI-RS resources, and each ZP CSI-RS resource set includes a ZP CSI-RS resource set identifier (ZP-CSI-RS-ResourceSetId). Within each ZP CSI-RS resource set, each ZP CSI-RS resource corresponds to a CSI-RS resource indicator (CRI). For example, a CRI of 0 indicates the first ZP CSI-RS resource in the ZP CSI-RS resource set, a CRI of 1 indicates the second ZP CSI-RS resource in the same set, and so on. The ZP-CSI-RS-ResourceId can be understood as a global identifier among all configured ZP-CSI-RS-Resources, while the CRI can be understood as a local identifier among all ZP-CSI-RS-Resources within the ZP CSI-RS resource set.

[0156] For example, a network device may configure one or more Channel State Information Interference Measurement (CSI-IM) resources for a terminal device. These CSI-IM resources are used to carry the Channel State Information Interference Measurement Reference Signal (CSI-IM RS). The terms CSI-IM RS and CSI-IM resources are interchangeable. Each CSI-IM resource corresponds to a CSI-IM resource identifier (CSI-IM-ResourceId) used to distinguish each CSI-IM resource. Furthermore, the network device may configure one or more CSI-IM resource sets. Each CSI-IM resource set includes one or more CSI-IM resources, and each CSI-IM resource set includes a CSI-IM resource set identifier (CSI-IM-ResourceSetId). Within a CSI-IM resource set, each CSI-IM resource corresponds to a CSI-RS resource indicator (CRI). For example, a CRI of 0 indicates the first CSI-IM resource in the CSI-IM resource set, a CRI of 1 indicates the second CSI-IM resource in the same set, and so on. CRI can be used to indicate the corresponding CSI-IM resource when a network device instructs a CSI-IM resource in a set, or when a terminal device measures and reports a CSI-IM resource in a set. CSI-IM-ResourceId can be understood as a global identifier among all configured CSI-IM resources, while CRI can be understood as a local identifier among all CSI-IM resources in a CSI-IM resource set.

[0157] For example, a network device configures one or more SSB resources for a terminal device. These SSB resources are used to carry SSBs. The terms "SSB" and "SSB resource" are interchangeable. Each SSB resource corresponds to an SSB resource index (SSB-Index) used to distinguish each SSB resource. Furthermore, a network device can configure one or more SSB resource sets. Each SSB resource set includes one or more SSB resources, and each SSB resource set includes an SSB resource set identifier (CSI-SSB-ResourceSetId). Within an SSB resource set, each SSB resource corresponds to an SSB resource indicator (SS / PBCH Block Resource indicator, SSBRI). For example, an SSBRI of 0 indicates the first SSB resource in the SSB resource set, an SSBRI of 1 indicates the second SSB resource, and so on. When a network device indicates the SSB resources of a certain SSB resource set, or when a terminal device measures and reports the SSB resources of a certain SSB resource set, the SSBRI can be used to indicate the corresponding SSB resource. SSB-Index can be understood as a global identifier among all configured SSB resources, while SSBRI can be understood as a local identifier among all SSB resources in the SSB resource set.

[0158] For example, a network device configures one or more SRS resources for a terminal device. These SRS resources are used to carry SRS (Service Support Routing). The terms "SRS" and "SRS resource" are interchangeable. Each SRS resource corresponds to an SRS resource index (SRS-ResourceId) used to distinguish each SRS resource. Furthermore, a network device can configure one or more SRS resource sets. Each SRS resource set includes one or more SRS resources, and each SRS resource set includes an SRS resource set identifier (SRS-ResourceSetId). Within an SRS resource set, each SRS resource corresponds to an SRS resource indicator (SRI). For example, an SRI of 0 indicates the first SRS resource in the set, an SRI of 1 indicates the second SRS resource, and so on. When a network device indicates an SRS resource within a specific SRS resource set, or when a terminal device reports an SRS resource within a specific SRS resource set, the SRI can be used to indicate the corresponding SRS resource. SRS-ResourceId can be understood as a global identifier among all configured SRS resources, while SRI can be understood as a local identifier among all SRS resources in the SRS resource set.

[0159] The terminal device can be configured with one or more candidate cells, and the configuration of each candidate cell can include the configuration of reference signal resources. The reference signal carried by these reference signal resources can be an SSB (Security Signal Branch), CSI-RS (Central Signal Indicator), etc. This application embodiment mainly uses CSI-RS as an example for illustrative explanation.

[0160] In mobile communication systems, terminal devices measuring signals transmitted by network devices and reporting the measurement results is a common method to help network devices determine transmission parameters. For example, a network device may transmit multiple signals using different time-domain resources or different beams. The terminal device measures these multiple signals and reports the corresponding measurement results for each signal, thereby helping the network device determine the transmission parameters used for communication transmission. These parameters may include beamforming and channel coding rate.

[0161] In scenarios involving terminal devices moving between multiple cells, network devices need to determine, based on the measurement results of reference signals from candidate cells (not only geographically but also logically) fed back by the terminal, whether the terminal device should prepare for cell handover, whether to perform cell handover, or which candidate cell to hand over to. For example, when the network device decides that the terminal device should perform cell handover, the network device sends cell handover signaling to the terminal. Specifically, this involves the following steps:

[0162] Step 1: The network device sends measurement resources and reports configuration information.

[0163] The network device sends a report configuration (ReportConfig) for the serving cell. This report configuration is associated with the reference signal resources of one or more candidate cells. The report configuration also includes the content information to be reported, such as the number of candidate cells L for which the terminal reports measurement results, the number of reference signals M reported by each cell, and whether to report the measurement results of the current serving cell.

[0164] Step 2: The terminal device measures the reference signal and reports the measurement results.

[0165] The measurement results include measurements from L cells, with each cell containing measurements of M reference signals. Each reference signal measurement includes a reference signal resource index (e.g., SSBRI) and corresponding signal strength information (e.g., RSRP or differential RSRP). Currently, only SSB resources of candidate cells are supported for measurement, reporting the SSB's RSRP or differential RSRP (i.e., the difference from the reported maximum RSRP).

[0166] Step 3: The network device sends a cell handover signaling message. This message instructs the terminal to hand over to the target candidate cell. Correspondingly, the terminal device receives the cell handover signaling message.

[0167] For example, as shown in Figure 5, the terminal device is located in the serving cell and receives a cell handover signaling message. This cell handover signaling message indicates that the device should hand over to candidate cell #2. The terminal device may then hand over to candidate cell #2.

[0168] The cell handover signaling is an L1 / L2 triggered mobility cell switch command media access control (LTM Cell Switch Command MAC CE) signaling. It should be noted that in this application, the cell handover signaling and the L1 / L2 triggered mobility cell switch command media access control (LTM Cell Switch Command MAC CE) signaling can be described interchangeably. As shown in Figure 6, the cell handover signaling includes the following information:

[0169] (1) C: Indicates whether the MAC-CE includes contention-free random access (CFRA) related fields (such as Random Access Preamble index, Synchronization Signal Block / Physical Broadcast Channel index, Physical Random Access Channel Mask index, Secondary Uplink / Normal Uplink (S / U), Repetition Number). A value of 1 for the C field indicates inclusion; a value of 0 indicates exclusion.

[0170] (2) Target Config ID: This indicates the candidate target configuration index for cell handover, corresponding to the candidate cell index (ltm-CandidateId-1), indicating the target candidate cell to be switched to. The Target Config ID field is indicated by 3 bits.

[0171] (3) TA command: Timing advance (TA) for the target candidate cell. A value of all 1s in this field indicates invalidity (i.e., no valid TA is indicated).

[0172] (4) TCI state ID: Indicates the TCI state of the target candidate cell (indicates one from the TCI-state list in ltm-candidate).

[0173] (5) UL TCI state ID: Indicates the UL TCI state of the target candidate cell (one is indicated from the UL TCI-state list in ltm-candidate). (5) above exists only in separate mode. When the terminal device uses joint mode, it transmits using the TCI state indicated by the TCI state ID in (4) above. When the terminal device uses separate mode, in the downlink direction, it transmits using the TCI state indicated by the TCI state ID in (4) above. In the uplink direction, it transmits using the UL TCI state indicated by the UL TCI state ID in (5) above.

[0174] (6) Random Access Preamble index: Indicates the preamble ID of CFRA, used to trigger CFRA.

[0175] (7) SSB / PBCH index: Indicates the SSB corresponding to CFRA.

[0176] (8) PRACH Mask index: Used to indicate an RO from the random access channel occasion (RACH occasion, RO) associated with the above SSB. When the repetition number is non-zero, the terminal ignores this field.

[0177] (9) Repetition number: The number of times the CFRA preamble is repeated (the field value k indicates that it is sent 2k times, and 0 indicates that it is not sent repeatedly). The length of this field is 2 bits.

[0178] (10) S / U: Indicates the uplink subcarrier of CFRA. 1 indicates supplementary uplink (SUL), and 0 indicates normal uplink (NUL).

[0179] (11)R: Reserved field.

[0180] Currently, it only supports terminal devices measuring SSB to obtain the RSRP of candidate cells before cell handover (this RSRP is generally used to determine one or more beam strengths of candidate cells). It does not support obtaining other CSI information of candidate cells besides RSRP before or during cell handover (such as signal to interference plus noise ratio (SINR), precoding matrix indicator (PMI), rank indicator (RI), layer indicator (LI), channel quality indicator (CQI), codebook index i1, etc.). As a result, network devices cannot use transmission parameters to schedule data for terminal devices after cell handover, which is detrimental to the reliability and efficiency of data transmission.

[0181] This application provides a corresponding technical solution whereby a terminal device measures a reference signal of a first cell to obtain channel measurement results. The first cell is a candidate cell for the terminal device. Then, the terminal device receives a first signaling instruction, which instructs the terminal device to hand over to the first cell. The terminal device transmits the channel measurement results via a first PUCCH resource or a first PUSCH resource. The first PUCCH resource is the PUCCH resource of the first cell. The first PUSCH resource is the PUSCH resource of the first cell. Therefore, the terminal device measures the reference signal of the first cell to obtain channel measurement results when or before receiving the first signaling instruction. Then, the terminal device transmits the channel measurement results via the first PUCCH resource or the first PUSCH resource. This allows the terminal device to obtain the channel measurement results of the first cell before the cell handover is completed. This facilitates the network device in determining transmission parameters based on the channel measurement results after the terminal device hands over to the first cell, and scheduling the terminal device using these transmission parameters. This improves the reliability and efficiency of data transmission. Furthermore, the application specifies the resources used by the terminal device to report the channel measurement results.

[0182] As described above, in this application, the terms "reference signal" and "reference signal resource" can be used interchangeably. For example, the reference signal resource involved in this application can be a CSI-RS resource, CS-RS resource, US-RS resource, DMRS resource, SSB resource, etc. For ease of understanding, the following description will primarily use CSI-RS resources as the reference signal resource and a CSI-RS resource set as the reference signal resource set for illustrative purposes. Optionally, a reference signal resource set can also be called a reference signal resource list; for example, a CSI-RS resource set can also be called a CSI-RS resource list.

[0183] Optionally, in this application, "before cell handover" can be understood as before the terminal device receives the cell handover signaling. "During cell handover" can be understood as after the terminal device receives the cell handover signaling, but before the cell handover is completed. "After cell handover" can be understood as the terminal device receiving the cell handover signaling and completing the cell handover. The phrase "during cell handover" described in this application can also be called "during cell handover," and "after cell handover" can also be called "after cell handover." The cell handover described in this application can also be called handover, or L1 / L2 triggered mobility (LTM) cell handover, etc. RSRP can also be called layer 1 reference signal received power (L1-RSRP), and SINR can also be called layer 1 signal to interference plus noise ratio (L1-SINR).

[0184] In this application, the terms "cell," "serving cell," and "component carrier (CC)" are used interchangeably. A serving cell can be a primary cell (Pcell), a secondary cell (Scell), or a primary secondary cell (PScell). A cell with a primary component carrier (PCC) can be called a Pcell, and a cell with a secondary component carrier (SCC) can be called an Scell. Furthermore, a cell can also configure corresponding candidate cells for the serving cell's neighboring cells (e.g., cells corresponding to additional physical cell identifiers (PCIs), candidate cells, and L1 / L2 triggered mobility (LTM)).

[0185] The technical solution of this application is described below with reference to specific embodiments.

[0186] Figure 7 is a schematic diagram of an embodiment of the reference signal measurement and reporting method of this application. Referring to Figure 7, the method includes the following steps.

[0187] 701. The terminal equipment measures the reference signal of the first cell to obtain the channel measurement results.

[0188] The first cell is a candidate cell for the terminal device. Channel measurement results may include at least one of the following: RSRP, SINR, PMI, LI CQI, i1, RI, CRI, SSBRI. The candidate cells for the terminal device may include the serving cell.

[0189] Specifically, after receiving the first signaling, or before receiving the first signaling, the network device sends a reference signal for the first cell; correspondingly, the terminal device measures the reference signal of the first cell to obtain channel measurement results. The first signaling is used to instruct the terminal device to switch to the first cell. For example, the first signaling includes a target configuration ID field, which indicates the identifier of the first cell, or indicates the candidate cell index-1 (ltm-CandidateId-1) corresponding to the first cell.

[0190] Optionally, the first signaling may be called L1 / L2 triggered mobility cell handover MAC CE signaling (LTM Cell Switch Command MAC CE), cell handover signaling, or handover signaling, etc. This application does not specify the name of the first signaling. Optionally, the first signaling may be carried by RRC signaling, MAC CE signaling, or DCI signaling.

[0191] It should be noted that this application mainly uses the example of a terminal device measuring the reference signal of the first cell and reporting the channel measurement results, and the first signaling used to instruct the terminal device to hand over to the first cell to illustrate the technical solution of this application. In practical applications, the cell to be handed over by the terminal device indicated by the first signaling may not be the same cell as the first cell, and this application does not impose any specific restrictions on this.

[0192] Optionally, step 701 above can be described as follows: The terminal device measures the reference signal resources of the first cell to obtain channel measurement results.

[0193] Optionally, the reference signal resources of the first cell can be semi-persistent reference signal resources, periodic reference signal resources, or aperiodic reference signal resources.

[0194] Optionally, the embodiment shown in FIG7 further includes step 701a. Step 701a may be performed before step 701.

[0195] 701a. The network device sends a second signaling message to the terminal device. Correspondingly, the terminal device receives the second signaling message from the network device.

[0196] Specifically, the second signaling is used to trigger the terminal device to measure and / or report the channel measurement results of the reference signal of the first cell. Alternatively, the second signaling is used to trigger the terminal device to measure and / or report the channel measurement results of the reference signal resources of the first cell.

[0197] Optionally, the second signaling is carried on RRC signaling, MAC CE signaling, or DCI signaling.

[0198] For example, the second signaling is carried on RRC signaling. This RRC signaling is used to configure the reference signal resources of the first cell. When the terminal device receives this RRC signaling, it is triggered to measure the reference signal of the first cell and / or report the channel measurement results. Alternatively, if the terminal device receives and the RRC signaling is active, it is triggered to measure the reference signal of the first cell and / or report the channel measurement results. For example, if the reference signal resources of the first cell are periodic reference signal resources, and the terminal device receives this RRC signaling, it will perform periodic measurements of the reference signal of the first cell.

[0199] For example, the second signaling is carried on a DCI. In one possible implementation, this DCI is used to schedule the first signaling, that is, the DCI used to schedule downlink transmission (which can be called DL DCI). For example, any one of downlink control information format 1_0 (DCI format1_0), DCI format1_1, DCI format1_2, and DCI format1_3. In another possible implementation, this DCI includes a Channel State Information Request (CSI request) field, and this DCI can be used to schedule uplink transmission (which can be called UL DCI). For example, any one of DCI 0_0, DCI0_1, DCI 0_2, and DCI0_3. For example, if the reference signal resources of the first cell are aperiodic reference signal resources, and these aperiodic reference signal resources are associated with aperiodic reporting configurations, when the terminal device receives this DCI signaling, the terminal device measures and reports the reference signals of the first cell.

[0200] For example, the second signaling is carried by a MAC CE. In one possible implementation, the MAC CE is the first signaling in step 702 above, i.e., cell handover signaling. When the terminal device receives the first signaling, it is triggered to measure the reference signal of the first cell and / or report the channel measurement results. Alternatively, when the terminal device receives the first signaling and the first signaling is active, it is triggered to measure the reference signal of the first cell and / or report the channel measurement results. In another possible implementation, the MAC CE is used to activate or deactivate the semi-persistent reference signal resource set. For example, the semi-persistent reference signal resource set can be a semi-persistent channel state information (SSI-RS) resource set (SP CSI-RS Resource Set), a semi-persistent non-zero power (SNI) channel state information (SSI-RS) resource set (SP NZP CSI-RS Resource Set), or a semi-persistent channel state information-interference measurement (SSI-IR) resource set (SP CSI-IR Resource Set). For instance, the semi-persistent reference signal resource set may include the reference signal resources of the first cell.

[0201] For example, the second signaling can be a combination of RRC signaling, MAC CE signaling, or DCI signaling. The network device triggers the measurement of the reference signal of the first cell and the reporting of the channel measurement results of the reference signal of the first cell through different signaling.

[0202] For example, the second signaling carries RRC signaling and MAC CE signaling. The RRC signaling is used to configure the reference signal resources of the first cell. When the terminal device receives the RRC signaling, or in other words, when the terminal device receives the RRC signaling and the RRC signaling is active, the terminal device performs periodic measurements of the reference signal of the first cell. The MAC CE signaling is used to trigger the reporting of the channel measurement results of the reference signal of the first cell. When the terminal device receives the MAC CE signaling, it triggers the reporting of the channel measurement results of the reference signal of the first cell. Or, when the terminal device receives the MAC CE signaling and the MAC CE signaling is active, it triggers the reporting of the channel measurement results of the reference signal of the first cell.

[0203] For example, the second signaling can be two different MAC CE signaling messages, one of which is used to trigger or activate the reference signal measurement of the first cell, and the other MAC CE signaling message (e.g., cell handover signaling) is used to trigger the reporting of the channel measurement results of the reference signal of the first cell. Optionally, the second signaling message includes at least one of the following: trigger status information, report configuration identifier, reference signal resource identifier, or reference signal resource set identifier, and identifier or index of the first cell.

[0204] Trigger status information is used to indicate a first trigger status. The first trigger status is one of the trigger statuses activated by the network device for the terminal device, or one of the trigger statuses configured by the network device. The first trigger status is associated with one or more reporting configurations of the serving cell. These one or more reporting configurations are associated with reference signal resources of the first cell. The reference signal resources are used to carry reference signals. The terminal device can determine the reference signal resources of the second cell based on the association between the first trigger status, the reporting configurations, and the reference signal resources. Based on this trigger status information, the terminal measures the reference signal resources of the first cell (i.e., the reference signal resources associated with one or more reporting configurations of the serving cell associated with the trigger status information), and / or reports the channel measurement results of the reference signal resources of the first cell (i.e., the reference signal resources associated with one or more reporting configurations of the serving cell associated with the trigger status information).

[0205] The report configuration identifier is used to indicate one or more report configurations of the serving cell. These one or more report configurations are associated with the reference signal resources of the first cell. The terminal device determines the reference signal resources of the first cell based on the report configuration identifier and the association between the report configuration identifier and the reference signal resources. Based on the report configuration identifier, the terminal measures the reference signal resources of the first cell (i.e., the reference signal resources associated with one or more report configurations of the serving cell associated with the report configuration identifier), and / or reports the channel measurement results of the reference signal resources of the first cell (i.e., the reference signal resources associated with one or more report configurations of the serving cell associated with the report configuration identifier).

[0206] A reference signal resource identifier is used to indicate one or more reference signal resources of a first cell. The terminal device determines the reference signal resources of the first cell based on the reference signal resource identifier. The terminal device measures the reference signal resources of the first cell corresponding to the reference signal resource identifier, and / or reports the channel measurement results of the reference signal resources of the first cell corresponding to the reference signal resource identifier.

[0207] A reference signal resource set identifier is used to indicate one or more reference signal resource sets of a first cell. A reference signal resource set includes one or more reference signal resources of the first cell. The terminal device determines the reference signal resources of the first cell based on this reference signal resource set identifier. The terminal device measures the reference signal resources of the first cell corresponding to the reference signal resource set identifier, and / or reports the channel measurement results of the reference signal resources of the first cell corresponding to the reference signal resource set identifier. An identifier or index of the first cell is used to indicate the first cell. Optionally, the identifier or index of the first cell can be a candidate cell identifier corresponding to the first cell, or a candidate cell identifier -1. The terminal device determines the reference signal resources of the first cell to be measured based on this identifier.

[0208] In one possible implementation, the second signaling may include any of the aforementioned information, thereby enabling the terminal device to determine the reference signal resources of the first cell. In another possible implementation, the second signaling may include multiple types of the aforementioned information. For example, the first signaling may include trigger status information and a report configuration identifier. In this implementation, the report configuration identifier indicates one of one or more report configurations associated with the first trigger status indicated by the trigger status information. The terminal device determines the corresponding report configuration based on the trigger status information and the report configuration identifier. Then, the terminal device determines the reference signal resources of the first cell based on the report configuration and its association with the reference signal resources. As another example, the first signaling may include an identifier or index of the first cell and a reference signal resource set identifier. In this implementation, the first signaling indicates one or more sets of reference signal resources for the first cell.

[0209] Optionally, the embodiment shown in FIG7 further includes step 701b. Step 701b may be performed before step 701.

[0210] 701b. The network device sends second configuration information to the terminal device. Correspondingly, the terminal device receives the second configuration information from the network device.

[0211] The second configuration information is used to configure one or more reporting configurations for the serving cell of the terminal device. For example, the reporting configuration could be a Layer 1 / L2 triggered mobility channel state information report configuration (LTM-CSI-ReportConfig). This report configuration is used to configure the relevant parameters for CSI reporting by candidate cells before or during cell handover. One report configuration can be associated with the reference signal resources of one or more candidate cells. Two possible implementation methods are described below.

[0212] Implementation Method 1: The network device configures one or more resource configurations for the terminal device. Each resource configuration is associated with a report configuration. This resource configuration can be an LTM-CSI resource configuration (LTM-CSI-ResourceConfig). A resource configuration can be associated with reference signal resources of one or more candidate cells, or it can be associated with one or more sets of reference signal resources. Each set of reference signal resources includes one or more reference signal resources of a candidate cell. For example, there is a one-to-one correspondence between a candidate cell identifier or index and a reference signal resource identifier or index; the resource configuration includes reference signal resources of one or more candidate cells. Alternatively, the resource configuration includes a reference signal resource identifier or a reference signal resource set identifier.

[0213] Implementation Method 2: A report configuration is directly associated with the reference signal resources of one or more candidate cells, or a report configuration is directly associated with a set of reference signal resources of one or more candidate cells. For example, the report configuration includes reference signal resource identifiers for one or more candidate cells. Alternatively, the report configuration includes a set identifier of reference signal resources for one or more candidate cells.

[0214] Optionally, the second configuration information is also used to configure the reference signal resources of one or more candidate cells. Of course, the reference signal resources of the one or more candidate cells can also be configured using other information, which is not limited in this application.

[0215] It should be noted that if the embodiment shown in Figure 7 further includes step 701a, step 701b can be performed before step 701a. Alternatively, step 701b and step 701a can be performed simultaneously; this application does not limit the specific execution.

[0216] 702. The network device sends the first signaling message to the terminal device. Correspondingly, the terminal device receives the first signaling message from the network device.

[0217] Please refer to the aforementioned introduction for information on the first signaling.

[0218] It should be noted that there is no fixed execution order between steps 701 and 702. Step 701 can be executed first, followed by step 702; or step 702 can be executed first, followed by step 701. This application does not limit the specific execution order. For example, the terminal device receives the first signaling, and then the terminal device begins measuring the reference signal of the first cell to obtain the channel measurement result. This enables the terminal device to measure the reference signal of the first cell to obtain the channel measurement result during cell handover. That is, after receiving the first signaling and before the first cell handover is completed, the terminal device measures the reference signal of the first cell to obtain the channel measurement result. As another example, before receiving the first signaling, the terminal device measures the reference signal of the first cell to obtain the channel measurement result. Then, the terminal device receives the first signaling. This enables the measurement of the reference signal of the first cell to obtain the channel measurement result before cell handover. Therefore, in this embodiment, the terminal device is located in the serving cell. The terminal device measures the reference signal of the first cell to obtain the channel measurement result during or before cell handover.

[0219] It should be noted that there is no fixed execution order between steps 702 and 701a. Step 702 can be executed first, followed by step 701a; or step 701a can be executed first, followed by step 702; or, depending on the circumstances, steps 702 and 701a can be executed simultaneously. This application does not impose any specific restrictions on this.

[0220] Optionally, the first signaling and the second signaling may be the same signaling. For example, if the terminal device receives a cell handover signaling, it is triggered to measure the reference signal of the first cell and / or report the channel measurement results of the reference signal of the first cell.

[0221] It should be noted that step 702 can be performed after step 701b.

[0222] Optionally, the embodiment shown in FIG7 further includes step 702a, which may be performed before step 702.

[0223] 702a. The network device sends the first DCI to the terminal device. Correspondingly, the terminal device receives the first DCI from the network device.

[0224] The first DCI is used to schedule the first signaling.

[0225] It should be noted that there is no fixed execution order between steps 702a and 701. Step 702a can be executed first, followed by step 701; or step 701 can be executed first, followed by step 702a; or, depending on the circumstances, steps 702a and 701 can be executed simultaneously. This application does not impose any specific restrictions on this.

[0226] Optionally, the embodiment shown in FIG7 further includes step 702b. Step 702b may be performed after step 702.

[0227] 702b. The terminal device sends a feedback signaling message to the network device. Correspondingly, the network device receives the feedback signaling message from the terminal device.

[0228] The feedback signaling refers to the signaling provided in response to the first signaling. This occurs when the terminal device sends a PUSCH carrying a hybrid automatic repeat request acknowledgement (HARQ-ACK) or a PUCCH carrying a HARQ-ACK. The HARQ-ACK is an acknowledgment (ACK) of the PDSCH feedback carrying the first signaling.

[0229] 703. The terminal device sends channel measurement results to the network device through the first PUCCH resource or the first PUSCH resource. Correspondingly, the network device receives the channel measurement results from the terminal device through the first PUCCH resource or the first PUSCH resource.

[0230] The first PUCCH resource is the PUCCH resource of the first cell. The first PUSCH resource is the PUSCH resource of the first cell.

[0231] Optionally, the first PUCCH resource or the first PUSCH resource is the first uplink transmission resource when the terminal switches to the first cell.

[0232] In this embodiment, the terminal device is located in the serving cell. Before the terminal device receives the first signaling, or after the terminal device receives the first signaling but before the terminal device completes the handover of the first cell, the terminal device measures the reference signal of the first cell (i.e., the candidate cell). Then, the terminal device reports the channel measurement results to the network device using the PUCCH resources or PUSCH resources of the first cell.

[0233] Optionally, the first PUCCH resource is located in the first BWP of the first cell. The first BWP includes any of the following: the active BWP of the first cell, the initial BWP, the default BWP, or the BWP indicated in the first signaling. The first PUCCH resource is described below in two implementation methods.

[0234] Implementation Method 1: The first PUCCH resource is the PUCCH resource configured by the network device. Optionally, the embodiment shown in Figure 7 also includes 701c.

[0235] 701c: The network device sends first configuration information to the terminal device. Correspondingly, the terminal device receives the first configuration information from the network device.

[0236] In one possible implementation, the first configuration information is used to configure the PUCCH resources corresponding to each candidate BWP in the first cell. The PUCCH resources corresponding to each candidate BWP are used to carry channel measurement results. The first BWP is one of the candidate BWPs in the first cell. The first PUCCH resources are associated with the first BWP. Here, the candidate BWP is also called the candidate uplink bandwidth part (UL BWP).

[0237] Specifically, the network device configures a PUCCH resource for each candidate BWP in the first cell. When the terminal device receives the first signaling, it establishes a connection with the network device through the first BWP of the first cell. Then, the terminal device reports the channel measurement results through the first PUCCH resource associated with the first BWP.

[0238] Specifically, the network device configures a PUCCH resource for each candidate BWP in the first cell. When the terminal device receives the first signaling, it establishes a connection with the network device through the first BWP of the first cell. Optionally, the PUCCH resource of each candidate BWP is associated with any one or more of the following: the triggering state, reporting configuration, reference signal resource set of the first cell, and / or the reference signal resources of the first cell. The terminal device determines the first PUCCH resource based on the second signaling and this association. This first PUCCH resource is the PUCCH resource associated with the first BWP. For example, the PUCCH resource of each candidate BWP is associated with the reference signal resources of the first cell. After receiving the first signaling, the terminal device establishes a connection with the network device through the first BWP of the first cell. The second signaling is used to trigger the measurement and reporting of reference signals in the first cell. The terminal device can determine the PUCCH resource of the first BWP based on the second signaling and the association between the PUCCH resource of the first BWP and the reference signal resources of the first cell. The terminal device reports the channel measurement results of the first cell through the PUCCH resource of the first BWP.

[0239] For example, the PUCCH resources of each candidate BWP are associated with the triggering state of the serving cell. The triggering state of the serving cell is associated with one or more reporting configurations of the serving cell. Each reporting configuration is associated with the reference signal resources of one or more candidate cells. Therefore, after receiving the first signaling, the terminal device establishes a connection with the network device through the first BWP of the first cell. The second signaling is used to trigger the measurement and reporting of the reference signals of the first cell. The terminal device can determine the PUCCH resources of the first BWP based on the second signaling and the association between the PUCCH resources of the first BWP and the triggering state of the serving cell. The terminal device reports the channel measurement results of the first cell through the PUCCH resources of the first BWP.

[0240] For example, the PUCCH resources of each candidate BWP are associated with the reporting configuration of the serving cell, and this reporting configuration is associated with the reference signal resources of one or more candidate cells. Therefore, after receiving the first signaling, the terminal device establishes a connection with the network device through the first BWP of the first cell. The second signaling is used to trigger the measurement and reporting of the reference signals of the first cell. The terminal device can determine the PUCCH resources of the first BWP based on the second signaling and the association between the PUCCH resources of the first BWP and the reporting configuration of the serving cell. The terminal device reports the channel measurement results of the first cell through the PUCCH resources of the first BWP.

[0241] In another possible implementation, the first configuration information is used to configure a PUCCH resource for the first cell. This PUCCH resource is used to carry channel measurement results. The first PUCCH resource is the PUCCH resource configured by the first configuration information.

[0242] Specifically, the network device is configured with only one PUCCH resource in the first cell. When the terminal device receives the first signaling, it establishes a connection with the network device through the first BWP of the first cell. Then, the terminal device sends the PUCCH resource on the first BWP and carries the channel measurement results on the PUCCH resource.

[0243] Specifically, the network device configures only one PUCCH resource for the first cell. When the terminal device receives the first signaling, it establishes a connection with the network device through the first BWP of the first cell. The first PUCCH resource is the PUCCH resource associated with the first BWP. For example, this PUCCH resource may be associated with the reference signal resources of the first cell. After receiving the first signaling, the terminal device establishes a connection with the network device through the first BWP of the first cell. The second signaling is used to trigger the measurement and reporting of the reference signal of the first cell. The terminal device determines the PUCCH resource based on the second signaling and the association between the PUCCH resource and the reference signal resources of the first cell. The terminal device reports the channel measurement results of the first cell through this PUCCH resource.

[0244] For example, the PUCCH resource is associated with the triggering state of the serving cell. The triggering state of the serving cell is associated with one or more reporting configurations of the serving cell. Each reporting configuration is associated with the reference signal resources of one or more candidate cells. Therefore, after receiving the first signaling, the terminal device establishes a connection with the network device through the first BWP of the first cell. The second signaling is used to trigger the measurement and reporting of the reference signals of the first cell. The terminal device can determine the PUCCH resource based on the second signaling and the association between the PUCCH resource and the triggering state of the serving cell. The terminal device reports the channel measurement results of the first cell through this PUCCH resource.

[0245] For example, the PUCCH resource is associated with the reporting configuration of the serving cell. This reporting configuration is associated with the reference signal resources of one or more candidate cells. Therefore, after receiving the first signaling, the terminal device establishes a connection with the network device through the first BWP of the first cell. The second signaling is used to trigger the measurement and reporting of the reference signals of the first cell. The terminal device can determine the PUCCH resource based on the second signaling and the association between the PUCCH resource and the reporting configuration of the serving cell. The terminal device reports the channel measurement results of the first cell through this PUCCH resource.

[0246] It should be noted that step 701c can be performed before steps 701a and 702.

[0247] It should be noted that there is no fixed execution order between steps 701c and 701b. For example, step 701c may be executed first, followed by step 701b; or step 701b may be executed first, followed by step 701c; or, depending on the circumstances, steps 701b and 701c may be executed simultaneously. This application does not impose any specific restrictions on this.

[0248] Optionally, the first configuration information shown in step 701c and the second configuration information shown in step 701b can be the same configuration information or different configuration information. This application does not limit the specifics.

[0249] Implementation Method 2: The first PUCCH resource is a PUCCH resource of the first cell indicated in the first signaling. For example, the first signaling includes an identifier for the first PUCCH resource. After receiving the first signaling, the terminal device reports the channel measurement results of the first cell through this first PUCCH resource.

[0250] In one possible implementation, the terminal device transmits a first PUCCH resource on the first BWP and carries the channel measurement results of the first cell on the first PUCCH resource. Optionally, the first BWP can be an initial BWP or an active BWP.

[0251] In another possible implementation, the first signaling also includes an identifier for the first BWP. In this implementation, the terminal device transmits a first PUCCH resource on the first BWP and carries the channel measurement results of the first cell on the first PUCCH resource.

[0252] Optionally, the first PUCCH resource is sent at the time when the first reference time has elapsed for the first duration. In other words, the first PUCCH resource is sent at the time when the first reference time plus the first duration is reached.

[0253] 1. The terminal device receives the first DCI at the designated time. The first DCI is used to schedule the first signaling. The first DCI can be called a DL DCI. For example, the format of the first DCI is any one of DCI format1_0, DCI format1_1, DCI format1_2, and DCI format1_3.

[0254] In one possible implementation, if the time slot where the first DCI is located is n, then the first reference time is time slot n. Alternatively, if the time slot where the network device sends the first DCI is n, then the first reference time is time slot n. Another alternative implementation is if the time slot where the terminal device receives the first DCI is n, then the first reference time is time slot n.

[0255] In another possible implementation, if the time slot where the first DCI is located is n, the first reference time is the time slot. Where, μ CSI-RS For configuring the subcarrier spacing for transmitting reference signals (e.g., CSI-RS), μ PDCCHThis configures the subcarrier spacing for the physical downlink control channel (PDCCH) used to transmit the first DCI. Alternatively, if the time slot in which the network device transmits the first DCI is n, the first reference time is [time slot number missing]. Alternatively, if the time slot in which the terminal device receives the first DCI is n, then the first reference time is the time slot.

[0256] 2. The moment when the terminal device receives the first signaling.

[0257] In one possible implementation, if the time slot where the first signaling occurs is n, then the first reference time is time slot n. Alternatively, if the time slot where the network device sends the first signaling occurs is n, then the first reference time is time slot n. Another alternative implementation is if the time slot where the terminal device receives the first signaling occurs is n, then the first reference time is time slot n.

[0258] In another possible implementation, if the time slot where the first signaling occurs is n, then the first reference time is the time slot. Where, μ CSI-RS For configuring the subcarrier spacing for transmitting reference signals (e.g., CSI-RS), μ PDCCH This configures the subcarrier spacing for the PDSCH used to send the first signaling. Alternatively, if the time slot in which the network device sends the first signaling is n, the first reference time is the time slot. Alternatively, if the time slot in which the terminal device receives the first signaling is n, then the first reference time is the time slot.

[0259] 3. The timing of the terminal device sending feedback signaling. Here, feedback signaling refers to the signaling sent in response to the first signaling. In other words, the first reference time is the time when the terminal device sends either a PUSCH carrying HARQ-ACK or a PUCCH carrying HARQ-ACK. HARQ-ACK is the ACK sent in response to the PDSCH carrying the first signaling.

[0260] In one possible implementation, if the time slot where the feedback signaling resides is n, then the first reference time is time slot n. Alternatively, if the time slot where the terminal device sends the feedback signaling is n, then the first reference time is time slot n. The time slot where the feedback signaling resides can be understood as either the PUSCH carrying HARQ-ACK or the PUCCH carrying HARQ-ACK.

[0261] In another possible implementation, if the time slot where the feedback signaling resides is n, then the first reference time is the time slot. Where, μ CSI-RSFor configuring the subcarrier spacing for transmitting reference signals (e.g., CSI-RS), μ HARQ-ACK This configures the subcarrier spacing for sending feedback signaling. Alternatively, if the time slot in which the network device receives feedback signaling is n, then the first reference time is time slot n. Alternatively, if the time slot in which the terminal device sends the feedback signaling is n, then the first reference time is the time slot.

[0262] 4. The time at which the terminal device sends the feedback signaling after the third time interval has elapsed. In other words, the first reference time is the time at which the terminal device sends the feedback signaling plus the third time interval.

[0263] For example, the third duration is 3ms. Optionally, the third duration is related to one or more of the time required for the terminal device to parse the first signaling and the time required for the base station to process the feedback signaling.

[0264] In one possible implementation, the time slot where the feedback signaling resides is n, and the first reference time is... Alternatively, if the time slot in which the network device receives the feedback signaling is n, the first reference time is... Alternatively, if the time slot in which the terminal device sends the feedback signaling is n, the first reference time is... Configure the subcarrier spacing as μ HARQ-ACK At that time, the number of time slots corresponding to a subframe.

[0265] In another possible implementation, if the time slot where the feedback signaling resides is n, the first reference time is... μ CSI-RS For configuring the subcarrier spacing for transmitting reference signals (e.g., CSI-RS), μ HARQ-ACK Configure the subcarrier spacing for transmitting PUSCH or PUCCH carrying feedback signaling. Configure the subcarrier spacing as μ HARQ-ACK The time slot is the number of time slots corresponding to a subframe. Alternatively, if the time slot in which the terminal device sends feedback signaling is n, the first reference time is time slot n. Alternatively, if the time slot in which the network device receives the feedback signaling is n, then the first reference time is the time slot.

[0266] 5. The time at which the terminal device sends the feedback signaling occurs after the third and fourth time intervals. In other words, the first reference time is the time at which the terminal device sends the feedback signaling plus the third and fourth time intervals.

[0267] In one possible implementation, the time slot where the feedback signaling resides is n, and the first reference time is... The third duration is 3 milliseconds, and the fourth duration is x milliseconds. x is greater than or equal to 0. Please refer to the relevant introduction below for details on the fourth duration. Alternatively, if the time slot in which the terminal device sends the feedback signaling is n, the first reference time is n+3. Alternatively, if the time slot in which the network device receives the feedback signaling is n, then the first reference time is the time slot.

[0268] In another possible implementation, the time slot where the feedback signaling resides is n, and the first reference time is... Alternatively, if the time slot in which the terminal device sends the feedback signaling is n, the first reference time is... Alternatively, if the time slot in which the network device receives the feedback signaling is n, the first reference time is...

[0269] The third duration is described in the preceding section. The fourth duration is the duration of the cell handover interruption. In other words, it is the duration required for the terminal device to perform the first cell handover. The fourth duration is determined by one or more of the following:

[0270] a. The time it takes for the terminal device to parse the configuration information of the first cell. For example, this time is T. LTM-RRC-processing T LTM-RRC-processing The time required for decoding the abstract syntax notation 1 (ASN.1) and performing validity / consistency checks on the configuration information of the first cell indicated in the first signaling. LTM-RRC-processing It can be 0 or 10ms. Refer to the communication protocol TS 38.133 for the specific value to use.

[0271] b. The time taken for the terminal device to process the configuration information of the first cell. For example, this time is T. LTM-processing T LTM-processing The processing time for the UE includes the time for applying target cell parameters and the time for layer 1 (L1) / layer 2 (L2) changes. LTM-processing For specific values ​​and definitions, please refer to the communication protocol TS 38.133.

[0272] c. The time required for the terminal device to accurately track and acquire timing information of the first cell. This time is T. first-RS T first-RSIt can be 0, or it can be 3ms after the feedback signaling is sent, the time when the first cell sends the first synchronization signal block or the synchronization signal-PBCH block (SSB) measurement is sent.

[0273] d. The processing time of the synchronization signal SSB of the first cell by the terminal equipment.

[0274] Specifically, if the first signaling indicates a TCI state, but that TCI state has not been activated in advance or has been activated for too long, the terminal device needs to re-receive the SSB of the first cell to obtain synchronization information. This can be understood as the processing time of the terminal device for the SSB of the first cell. This time is T. RS-pro T RS-pro It can be 0 or 2ms. Refer to the communication protocol TS 38.133 for details.

[0275] 6. The time when the first cell handover is completed. For example, the time when the terminal device sends the first uplink message (first UL message) in the first cell. Another example is the time when the cell handover for a random access channel (RACH) procedure is completed, corresponding to the RACH procedure completion time. Yet another example is the time when the terminal device sends the cell reconfiguration completion message.

[0276] 7. The time when the terminal device completes the reporting of the channel measurement results corresponding to the reference signal resources of the second cell after receiving the first signaling.

[0277] It should be noted that the first duration is configured or indicated by the network device, reported by the terminal device based on capability information, or determined by any one or more combinations of communication protocols. For example, the first duration is a time offset value configured by the network device, such as the time offset value configured by the network device to trigger the measurement of a reference signal resource set. This reference signal resource set includes reference signal resources of the first cell. When the network device triggers the measurement of this reference signal resource set, the transmission start time of this reference signal resource set is the first reference time plus the time offset value. For example, the first duration is 0, or the first duration can be jointly determined based on the terminal device's capability information and the network device's configuration. For example, the terminal device reports the minimum supported duration, and the network device configures the first duration based on this minimum duration. For example, the first duration is greater than or equal to the minimum duration.

[0278] Optionally, the unit of the first duration can be Tc, Ts, frame, subframe, time slot, symbol, millisecond, nanosecond, microsecond, or second, etc., and this application does not limit the specific unit. c =1 / (Δf)max ·N f ), Δf max =480·10 3 Hz, N f =4096; T s =1 / (Δf) ref ·N f,ref )Δf ref =15·10 3 Hz, N f,ref =2048.

[0279] Optionally, if the configuration parameters related to the first PUCCH resource are included in the configuration message of the serving cell, then the first reference time can be any one of the first to seventh items in the aforementioned first reference time. If the configuration parameters related to the first PUCCH resource are included in the configuration message of the first cell, the terminal device needs to parse the configuration message of the first cell after receiving the first signaling (i.e., cell handover signaling) in order to determine the specific information of the first PUCCH resource. Therefore, the first reference time can be any one of the fifth to seventh items in the aforementioned first reference time.

[0280] The following section introduces some possible implementations of the first PUSCH resource.

[0281] Implementation Method 1: The first PUSCH resource is the CG PUSCH resource of the first cell.

[0282] The first PUSCH resource is the Xth transmission opportunity of the first CG PUSCH resource after the second duration following the first reference time. X is an integer greater than or equal to 1. This Xth transmission opportunity is the Xth valid transmission opportunity of the first CG PUSCH resource. Optionally, a valid transmission opportunity refers to a transmission opportunity that does not conflict with other uplink resources of the terminal device, or in other words, a transmission opportunity that is not occupied by other uplink transmissions of the terminal device. For example, if X = 1, the first PUSCH resource is the first transmission opportunity of the first CG PUSCH resource after the second duration following the first reference time. Of course, the first PUSCH resource can also be one of multiple transmission opportunities of the first CG PUSCH resource after the second duration following the first reference time. This application does not limit the specifics.

[0283] Please refer to the aforementioned introduction to the first reference time. The second duration is similar to the first duration; for details, please refer to the aforementioned introduction to the first duration, which will not be repeated here.

[0284] Optionally, the terminal device sends the CG PUSCH resource via the first BWP. Please refer to the aforementioned introduction to the first BWP for details.

[0285] In one possible implementation, the first CG PUSCH resource is a CG PUSCH resource configured by the network device for the first cell.

[0286] Specifically, the network equipment configures one CG PUSCH resource for the first cell. This CG PUSCH resource is called the first CG PUSCH resource. The first CG PUSCH resource is used to carry the channel measurement results reported by the terminal equipment for the first time after receiving the first signaling. In other words, the first CG PUSCH resource is used to carry the channel measurement results of the first cell reported by the terminal equipment after receiving the first signaling, which are obtained before or during cell handover. Since the first CG PUSCH resource is a periodic resource, there are multiple transmission opportunities for it. The terminal equipment reports the channel measurement results of the first cell at the Xth transmission opportunity of the first CG PUSCH resource after the second time interval following the first reference time. X is an integer greater than or equal to 1. For example, if X = 1, the terminal equipment reports the channel measurement results of the first cell at the 1st transmission opportunity of the first CG PUSCH resource after the second time interval following the first reference time.

[0287] In another possible implementation, the first CG PUSCH resource is the CG PUSCH resource indicated in the first signaling. Alternatively, the first CG PUSCH resource is the CG PUSCH resource indicated by the pre-configured authorization configuration index included in the first signaling.

[0288] Specifically, the first signaling includes the identifier of the first CG PUSCH resource, or a pre-configured grant configuration index, such as `ConfiguredGrantConfigIndex`. The terminal device reports the channel measurement results of the first cell through the first CG PUSCH resource or the first CG PUSCH resource corresponding to the pre-configured grant configuration index. Since the first CG PUSCH resource is a periodic resource, there are multiple transmission opportunities for it. The terminal device reports the channel measurement results of the first cell at the Xth transmission opportunity of the first CG PUSCH resource after a second duration has elapsed from the first reference time. X is an integer greater than or equal to 1. For example, if X = 1, the terminal device reports the channel measurement results of the first cell at the 1st transmission opportunity of the first CG PUSCH resource after a second duration has elapsed from the first reference time.

[0289] It should be noted that if the configuration parameters related to the first CG PUSCH resource are included in the configuration message of the serving cell, then the first reference time is any one of the first to seventh items of the first reference time shown above. If the configuration parameters related to the first CG PUSCH resource are included in the configuration message of the first cell, then the terminal device needs to receive the first signaling and parse the configuration message of the first cell to determine the specific information of the first CG PUSCH resource. Therefore, the first reference time is any one of the fifth to seventh items of the first reference time shown above.

[0290] Implementation Method 2: The first PUSCH resource is the DG PUSCH resource of the first cell.

[0291] The first PUSCH resource is the DG PUSCH resource scheduled by the second DCI. The second DCI is used to schedule uplink transmissions, and the second DCI can be called the UL DCI. For example, the second DCI can be any one of DCI 0_0, DCI0_1, DCI 0_2, and DCI0_3. Optionally, the second DCI is the UL DCI received by the terminal device for the first time after switching to the first cell. Optionally, the DG PUSCH resource scheduled by the second DCI is the PUSCH resource scheduled for the first uplink after the terminal device switches to the first cell.

[0292] Optionally, the terminal device sends the DG PUSCH resource via the first BWP. Please refer to the aforementioned introduction to the first BWP for details.

[0293] In one possible implementation, the second DCI also includes a first field. The value of the first field is used to indicate the channel measurement results of the DG PUSCH resources scheduled by the second DCI for carrying the reference signal of the first cell.

[0294] Specifically, the terminal device receives a second DCI (e.g., the first UL DCI of the first cell). The second DCI includes a first field. The first field is used to indicate whether the scheduled DG PUSCH resources carry channel measurement results of the reference signal of the first cell. For example, the first field is indicated by 1 bit. When the value of the first field is 1, it indicates that the DG PUSCH resources scheduled by the second DCI are used to carry the channel measurement results of the first cell; or, it indicates that the DG PUSCH resources scheduled by the second DCI are used for the first CSI report of the first cell after cell handover; or, it indicates that the DG PUSCH resources scheduled by the second DCI are used for LTM CSI report after cell handover. When the value of the first field is 0, it indicates that the DG PUSCH resources scheduled by the second DCI do not carry the channel measurement results of the first cell; or, it indicates that the DG PUSCH resources scheduled by the second DCI are not used for the first CSI report of the first cell after cell handover; or, it indicates that the DG PUSCH resources scheduled by the second DCI are not used for LTM CSI report after cell handover.

[0295] Alternatively, when the value of the first field is 1, it indicates that the DG PUSCH resources scheduled by the second DCI do not carry the channel measurement results of the first cell, or that the DG PUSCH resources scheduled by the second DCI are not used for the first CSI report of the first cell after cell handover, or that the DG PUSCH resources scheduled by the second DCI are not used for LTM CSI report after cell handover. When the value of the first field is 0, it indicates that the DG PUSCH resources scheduled by the second DCI are used to carry the channel measurement results of the first cell; or that the DG PUSCH resources scheduled by the second DCI are used for the first CSI report of the first cell after cell handover; or that the DG PUSCH resources scheduled by the second DCI are used for LTM CSI report after cell handover.

[0296] In another possible implementation, the second DCI further includes a second field. This second field indicates whether the Channel State Information Request (CSI) field in the second DCI corresponds to the triggering state of the original serving cell or the triggering state of the first cell of the terminal device. For example, the second field uses 1 bit for indication. When this bit is 1, it indicates that the CSI field in the second DCI corresponds to the triggering state of the serving cell. When this bit is 0, it indicates that the CSI field in the second DCI corresponds to the triggering state of the first cell. Alternatively, when this bit is 0, it indicates that the CSI field in the second DCI corresponds to the triggering state of the serving cell. When this bit is 1, it indicates that the CSI field in the second DCI corresponds to the triggering state of the first cell. In this embodiment, the value of the second field should indicate the triggering state of the serving cell in the CSI field of the second DCI. The triggering state of the serving cell is associated with one or more reporting configurations of the serving cell. Each reporting configuration is associated with the reference signal resources of one or more candidate cells, including the first cell. Therefore, the terminal device can report channel measurement results corresponding to one or more report configurations associated with the reference signal resources of the original serving cell through the first PUSCH resource. These reference signal resources include the reference signal resources of the first cell. The terminal device can also report the channel measurement results of the reference signals of the first cell associated with one or more report configurations of the original serving cell through the DG PUSCH resource scheduled by the second DCI. In this implementation, the terminal device can immediately report the channel measurement results of the reference signal resources of the first cell.

[0297] It should be noted that if the value of the second field is used to indicate the triggering state of the first cell corresponding to the channel state information request field in the second DCI, then in this implementation, after the terminal device completes the handover to the first cell, the terminal device is located in the first cell. The terminal device can trigger the measurement of the reference signal of the first cell to obtain the channel measurement result, and report the channel measurement result through the first PUSCH resource. In this implementation, the terminal device must complete the measurement before it can report the channel measurement result of the reference signal resource of the first cell.

[0298] Optionally, when the first condition is met, the terminal device transmits the channel measurement results through the first PUSCH resource or the first PUCCH resource. The first condition includes at least one of the following:

[0299] Before the terminal device receives the first signaling, the network device triggers the measurement of the reference signal of the first cell;

[0300] Before the terminal device receives the first signaling, the network device triggers the measurement of the reference signal of the first cell, and the channel measurement results must be reported after the terminal device receives the first signaling;

[0301] After the terminal device receives the first signaling, the network device configures or triggers the measurement of the reference signal of the first cell; or,

[0302] After the terminal device receives the first signaling, the network device configures or triggers the measurement and reporting of the reference signal of the first cell.

[0303] Optionally, the embodiment shown in FIG7 further includes step 700. Step 700 may be performed before step 701.

[0304] 700. The terminal device sends capability information to the network device. Correspondingly, the network device receives the capability information from the terminal device.

[0305] The capability information includes at least one of the following:

[0306] 1. Does the terminal device support reporting the reference signal and / or channel measurement results of the first cell before receiving the first signaling? In other words, does the terminal device support reporting the reference signal resources and / or channel measurement results of the first cell before receiving the first signaling?

[0307] 2. Does the terminal equipment support reporting the measurement results of the reference signal and / or channel of the first cell during the handover process of the first cell? In other words, does the terminal equipment support reporting the measurement results of the reference signal resources and / or channel of the first cell during the handover process of the first cell?

[0308] 3. Does the terminal device support reporting the measurement results of the reference signal and / or channel of the first cell after receiving the first signaling and before completing the handover of the first cell? In other words, does the terminal device support reporting the measurement results of the reference signal resources and / or channel of the first cell after receiving the first signaling and before completing the handover of the first cell?

[0309] 4. Does the terminal device support the acquisition of channel measurement results of the first cell triggered by the serving cell of the terminal device?

[0310] 5. Does the terminal device support the acquisition and reporting of channel measurement results triggered by the serving cell in the first cell?

[0311] 6. Before or during the handover of the first cell, the terminal device supports the acquisition of the maximum number of candidate cells for channel measurement results.

[0312] 7. Before or during the handover of the first cell, the terminal device supports the maximum number of candidate cells that can be simultaneously triggered to obtain channel measurement results.

[0313] It should be noted that, in one possible implementation, if the terminal device reports the capability information, it indicates that the terminal device supports the capability indicated by the capability information. If the terminal device does not report the capability information, it indicates that the terminal device does not support the capability indicated by the capability information. In another possible implementation, if the terminal device reports the capability information, it indicates that the terminal device supports the capability indicated by the capability information. If the terminal device reports that it does not support the capability indicated by the capability information, it indicates that the terminal device does not support the capability indicated by the capability information. In yet another possible implementation, if the terminal device supports some capabilities indicated by the aforementioned capability information, then the terminal device must support other capabilities indicated by the capability information; that is, if the terminal device does not report some of these other capabilities, it also indicates that the terminal device supports these other capabilities. This application does not impose any specific limitations on this.

[0314] Optionally, step 700 may be performed before steps 701a to 701c.

[0315] In the above embodiment, the terminal device measures the reference signal of the first cell to obtain channel measurement results. The first cell is a candidate cell for the terminal device. Then, the terminal device receives a first signaling, which instructs the terminal device to hand over to the first cell. The terminal device transmits the channel measurement results through a first PUCCH resource or a first PUSCH resource. The first PUCCH resource is the PUCCH resource of the first cell. The first PUSCH resource is the PUSCH resource of the first cell. Therefore, the terminal device measures the reference signal of the first cell to obtain channel measurement results when it receives the first signaling or before it receives the first signaling. Then, the terminal device transmits the channel measurement results through the first PUCCH resource or the first PUSCH resource. This allows the terminal device to obtain the channel measurement results of the first cell before the cell handover is completed. This facilitates the network device to determine transmission parameters based on the channel measurement results after the terminal device hands over to the first cell, and to schedule the terminal device using these transmission parameters. This improves the reliability and efficiency of data transmission.

[0316] The following is a schematic diagram of a communication device according to an embodiment of this application. Referring to Figure 8, the communication device can be used to execute the process performed by the terminal device in the embodiment shown in Figure 7. For details, please refer to the relevant description in the foregoing method embodiments.

[0317] The communication device 800 includes a transceiver module 801 and a processing module 802.

[0318] The processing module 802 is used for data processing. The transceiver module 801 can implement the corresponding communication functions. The transceiver module 801 can also be called a communication interface or a communication module.

[0319] Optionally, the communication device 800 may further include a storage module, which can be used to store program code, program instructions and / or data. The processing module 802 can read the instructions and / or data in the storage module so that the communication device 800 can implement the aforementioned method embodiments.

[0320] The communication device 800 can be used to perform the actions performed by the terminal device in the embodiment shown in FIG. 7. For example, it can be the terminal device, a communication module in the terminal device, or a circuit or chip in the terminal device responsible for communication functions. The communication device 800 can be the terminal device or a component configurable in the terminal device. The processing module 802 is used to perform processing-related operations on the terminal device side in the embodiment shown in FIG. 7. The transceiver module 801 is used to perform receiving-related operations on the terminal device side in the embodiment shown in FIG. 7.

[0321] Optionally, the transceiver module 801 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the embodiment shown in FIG. 7. The receiving module is used to perform the receiving operation in the embodiment shown in FIG. 7.

[0322] It should be noted that the communication device 800 may include a transmitting module but not a receiving module. Alternatively, the communication device 800 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 800 includes both transmitting and receiving actions. For example, the communication device 800 is used to execute the actions performed by the terminal device in the embodiment shown in Figure 7. For details, please refer to the relevant descriptions in the embodiment shown in Figure 7, which will not be elaborated here. For example, the communication device 800 is used to execute the following scheme:

[0323] The processing module 802 is used to measure the reference signal of the first cell to obtain the channel measurement result. The first cell is a candidate cell of the communication device 800.

[0324] The transceiver module 801 is used to receive a first signaling, which instructs the communication device 800 to switch to a first cell; and to transmit channel measurement results through a first PUCCH resource or a first PUSCH resource, wherein the first PUCCH resource is the PUCCH resource of the first cell, or the first PUSCH resource is the PUSCH resource of the first cell.

[0325] In one possible implementation, the transceiver module 801 is further configured to: receive first configuration information, the first configuration information being used to configure the PUCCH resource corresponding to each candidate BWP in the first cell; wherein, the first BWP is one of the candidate BWPs in the first cell, and the first PUCCH resource is associated with the first BWP; or, the first configuration information is used to configure a PUCCH resource of the first cell, the first PUCCH resource being the PUCCH resource configured by the first configuration information.

[0326] In another possible implementation, the first PUSCH resource is transmitted at the Xth time after the second duration following the first reference time; X is an integer greater than or equal to 1; the first CG PUSCH resource is a CG PUSCH resource pre-configured by the network device for the first cell; or, the first CG PUSCH resource is the CG PUSCH resource indicated in the first signaling, or the CG PUSCH resource indicated by the pre-configured authorization configuration index included in the first signaling.

[0327] In another possible implementation, the first PUSCH resource is the DG PUSCH resource called by the second DCI.

[0328] In another possible implementation, the transceiver module is specifically configured to: transmit channel measurement results via a first PUSCH resource or a first PUCCH resource when a first condition is met; the first condition includes at least one of the following: before the communication device 800 receives the first signaling, the network device triggers the measurement of the reference signal of the first cell; before the communication device 800 receives the first signaling, the network device triggers the measurement of the reference signal of the first cell and the channel measurement results are reported after the communication device 800 receives the first signaling; after the communication device 800 receives the first signaling, the network device configures or triggers the measurement of the reference signal of the first cell; or, after the communication device 800 receives the first signaling, the network device configures or triggers the measurement of the reference signal of the first cell and reports it.

[0329] In another possible implementation, the transceiver module is also used to: receive a second signaling, which is used to trigger a measurement of the reference signal of the first cell.

[0330] In another possible implementation, the transceiver module is also used to: receive second configuration information, which is used to configure one or more report configurations of the serving cell.

[0331] For other implementation methods, please refer to the relevant descriptions in the embodiments shown in Figure 7 above.

[0332] It should be understood that the specific procedures for each module to perform the above-mentioned corresponding processes have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0333] Optionally, when the communication device 800 is a terminal device or a communication module within a terminal device, the processing module 802 in the above embodiments can be implemented by at least one processor or processor-related circuitry. Specifically, the processor may include a modem chip, or a system-on-a-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip. The transceiver module 801 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 801 may also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0334] Optionally, when the communication device 800 is a circuit or chip in a terminal device responsible for communication functions, such as a modem chip or a SoC chip or SIP chip containing a modem core, the function of the processing module 802 can be implemented by a circuit system in the aforementioned chip that includes one or more processors or processing cores. The function of the transceiver module 801 can be implemented by the interface circuit or data transceiver circuit on the aforementioned chip.

[0335] The following is another structural schematic diagram of the communication device according to an embodiment of this application. Referring to Figure 9, the communication device can be used to execute the process performed by the network device in the embodiment shown in Figure 7. For details, please refer to the relevant descriptions in the foregoing method embodiments.

[0336] The communication device 900 includes a transceiver module 901. Optionally, the communication device 900 may also include a processing module 902.

[0337] The processing module 902 is used for data processing. The transceiver module 901 can implement the corresponding communication functions. The transceiver module 901 can also be called a communication interface or a communication module.

[0338] Optionally, the communication device 900 may further include a storage module, which can be used to store program code, program instructions and / or data. The processing module 902 can read the instructions and / or data in the storage module so that the communication device 900 can implement the aforementioned method embodiments.

[0339] In one possible implementation, the communication device 900 can be used to perform the actions performed by the network device in the above method embodiments. For example, it can be a network device or a communication module within a network device, or a circuit or chip within a network device responsible for communication functions. The communication device 900 can be a network device or a component configurable within a network device. The processing module 902 is used to perform processing-related operations on the network device side in the above method embodiments. The transceiver module 901 is used to perform reception-related operations on the network device side in the above method embodiments.

[0340] Optionally, the transceiver module 901 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiments. The receiving module is used to perform the receiving operation in the above method embodiments.

[0341] It should be noted that the communication device 900 may include a transmitting module but not a receiving module. Alternatively, the communication device 900 may include a receiving module but not a transmitting module. Specifically, it depends on whether the above-described scheme executed by the communication device 900 includes both transmitting and receiving actions.

[0342] For example, the communication device 900 is used to perform the actions performed by the network device in the embodiment shown in FIG7 above. For details, please refer to the relevant description in the embodiment shown in FIG7 above; it will not be elaborated here.

[0343] For example, the communication device 900 is used to execute the following scheme:

[0344] The transceiver module 901 is used to transmit a reference signal of a first cell, which is a candidate cell of the terminal device; transmit a first signaling, which is used to instruct the terminal device to switch to the first cell; and receive channel measurement results through a first PUCCH resource or a first PUSCH resource; wherein the first PUCCH resource is the PUCCH resource of the first cell; the first PUSCH resource is the PUSCH resource of the first cell; and the channel measurement results are obtained by the terminal device measuring the reference signal of the first cell.

[0345] In one possible implementation, the first PUCCH resource is located in the first BWP of the first cell; the first BWP includes any of the following: the activation BWP of the first cell; the initial BWP of the first cell; the default BWP of the first cell; or the BWP indicated in the first signaling.

[0346] In another possible implementation, the first PUCCH resource is a PUCCH resource pre-configured by the communication device 900 for carrying channel measurement results; or, the first PUCCH resource is a PUCCH resource indicated by the first signaling.

[0347] In another possible implementation, the transceiver module 901 is further configured to: send first configuration information, which is used to configure the PUCCH resource corresponding to each candidate BWP in the first cell; wherein, the first BWP is one of the candidate BWPs in the first cell, and the first PUCCH resource is associated with the first BWP; or, the first configuration information is used to configure a PUCCH resource of the first cell, and the first PUCCH resource is the PUCCH resource configured by the first configuration information.

[0348] In another possible implementation, the transmission time of the first PUCCH resource is the time when the first reference time has elapsed for the first duration.

[0349] In another possible implementation, the first PUSCH resource is transmitted at the Xth time after the second duration following the first reference time; X is an integer greater than or equal to 1; the first CG PUSCH resource is a CG PUSCH resource pre-configured by the network device for the first cell; or, the first CG PUSCH resource is the CG PUSCH resource indicated in the first signaling, or the CG PUSCH resource indicated by the pre-configured authorization configuration index included in the first signaling.

[0350] In another possible implementation, the first PUSCH resource is the DG PUSCH resource called by the second DCI.

[0351] In another possible implementation, the transceiver module 901 is also used to: send a second signaling message, which is used to trigger a measurement of the reference signal of the first cell.

[0352] In another possible implementation, the transceiver module 901 is also used to: send second configuration information, which is used to configure one or more report configurations of the serving cell.

[0353] For other implementation methods, please refer to the relevant descriptions in the embodiments shown in Figure 7 above.

[0354] It should be understood that the specific procedures for each module to perform the above-mentioned corresponding processes have been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0355] Optionally, the processing module 902 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver module 901 can be implemented by a transceiver or transceiver-related circuitry. The transceiver module 901 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0356] This application embodiment also provides a communication device 1000. Referring to FIG10, the communication device 1000 includes a processor 1010, which is coupled to a memory 1020. The memory 1020 is used to store computer programs or instructions and / or data. The processor 1010 is used to execute the computer programs or instructions and / or data stored in the memory 1020, causing the methods in the above method embodiments to be executed. The communication device 1000 is used to implement the operations performed by the terminal device or network device in the above method embodiments.

[0357] Optionally, the communication device 1000 may include one or more processors 1010.

[0358] Optionally, as shown in Figure 10, the communication device 1000 may also include a memory 1020.

[0359] Optionally, the communication device 1000 may include one or more memory 1020.

[0360] Optionally, the memory 1020 can be integrated with the processor 1010 or set separately.

[0361] Optionally, as shown in FIG10, the communication device 1000 may further include a transceiver 1030, which is used for receiving and / or transmitting signals. For example, the processor 1010 is used to control the transceiver 1030 to receive and / or transmit signals.

[0362] This application also provides a communication device 1100, which can be a terminal device, a processor in the terminal device, or a chip. The communication device 1100 can be used to perform the operations performed by the terminal device in the above method embodiments.

[0363] When the communication device 1100 is a terminal device, Figure 11 shows a simplified structural diagram of the terminal device. As shown in Figure 11, the terminal device includes a processor, a memory, and a transceiver. The memory can store computer program code, and the transceiver includes a transmitter 1131, a receiver 1132, radio frequency circuitry (not shown in the figure), an antenna 1133, and input / output devices (not shown in the figure).

[0364] The processor is mainly used to process communication protocols and communication data; control terminal devices; execute software programs; and process data from software programs.

[0365] Memory is mainly used to store software programs and data.

[0366] Radio frequency (RF) circuits are mainly used for the conversion between baseband signals and RF signals, as well as for the processing of RF signals.

[0367] Antennas are primarily used for transmitting and receiving radio frequency signals in the form of electromagnetic waves.

[0368] Input / output devices can include touchscreens, displays, or keyboards. They are primarily used to receive user input and output data to the user. It should be noted that some types of terminal devices may not have input / output devices.

[0369] When data needs to be transmitted, the processor performs baseband processing on the data to be transmitted and outputs a baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outwards as electromagnetic waves via an antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna. The RF circuit converts the RF signal back into a baseband signal and outputs it to the processor. The processor converts the baseband signal back into data and processes the data. For ease of explanation, Figure 11 only shows one memory, processor, and transceiver. In actual terminal device products, there may be one or more processors and one or more memories. Memory can also be called storage medium or storage device, etc. Memory can be set up independently of the processor or integrated with the processor; this embodiment does not limit this.

[0370] In this embodiment, the antenna and radio frequency circuit with transceiver function can be regarded as the transceiver module of the terminal device, and the processor with processing function can be regarded as the processing module of the terminal device.

[0371] As shown in Figure 11, the terminal device includes a processor 1110, a memory 1120, and a transceiver 1130. The processor 1110 can also be referred to as a processing unit, processing board, processing module, or processing device, etc. The transceiver 1130 can also be referred to as a transceiver unit, transceiver, or transceiver device, etc.

[0372] Optionally, the device in transceiver 1130 used to implement the receiving function can be considered a receiving module, and the device in transceiver 1130 used to implement the transmitting function can be considered a transmitting module. That is, transceiver 1130 includes a receiver and a transmitter. A transceiver may sometimes be called a transceiver unit, transceiver module, or transceiver circuit, etc. A receiver may sometimes be called a receiver unit, receiving module, or receiving circuit, etc. A transmitter may sometimes be called a transmitter, transmitting module, or transmitting circuit, etc.

[0373] The processor 1110 is used to execute the processing actions on the terminal device side in the embodiment shown in FIG. 7. The transceiver 1130 is used to execute the sending and receiving actions on the terminal device side in the embodiment shown in FIG. 7.

[0374] It should be understood that Figure 11 is merely an example and not a limitation, and the terminal device described above, including the transceiver module and the processing module, may not depend on the structure shown in Figure 8, Figure 10, or Figure 11.

[0375] When the communication device 1100 is a chip, the chip includes a processor and a transceiver. The processor can be a processing module integrated on the chip, a microprocessor, or an integrated circuit. The transceiver can be an input / output circuit or a communication interface. In the above method embodiments, the sending operation of the terminal device can be understood as the output of the chip, and the receiving operation of the terminal device in the above method embodiments can be understood as the input of the chip.

[0376] Optionally, the communication device 1100 may also include a memory, which may be a memory built into the chip or a memory connected to the chip.

[0377] This application also provides a communication device 1200, which can be a network device or a chip. The communication device 1200 can be used to perform the operations performed by the network device in the embodiment shown in FIG7 above.

[0378] When the communication device 1200 is a network device, such as a base station, Figure 12 shows a simplified schematic diagram of a base station structure. The base station includes parts 1210, 1220, and 1230.

[0379] The 1210 section is mainly used for baseband processing and controlling the base station; the 1210 section is usually the control center of the base station, which can be called the processor, and is used to control the base station to perform the processing operations on the network device side in the above method embodiments.

[0380] Section 1220 is primarily used to store computer program code and data.

[0381] Section 1230 is primarily used for transmitting and receiving radio frequency (RF) signals, as well as converting RF signals to baseband signals. Section 1230 is commonly referred to as a transceiver module, transceiver, transceiver circuit, or transceiver unit. The transceiver module of section 1230, also called a transceiver or transceiver unit, includes antenna 1233 and RF circuitry (not shown in the figure), where the RF circuitry is mainly used for RF processing. Optionally, the device in section 1230 that performs the receiving function can be considered a receiver, and the device that performs the transmitting function can be considered a transmitter; that is, section 1230 includes receiver 1232 and transmitter 1231. The receiver can also be called a receiving module, receiver circuit, or receiving circuit, and the transmitter can be called a transmitting module, transmitter, or transmitting circuit.

[0382] Sections 1210 and 1220 may include one or more circuit boards, each of which may include one or more processors and one or more memories. The processors are used to read and execute programs from the memories to implement baseband processing functions and control the base station. If multiple circuit boards exist, they can be interconnected to enhance processing capabilities. As an optional implementation, multiple circuit boards may share one or more processors, multiple circuit boards may share one or more memories, or multiple circuit boards may simultaneously share one or more processors.

[0383] For example, in one implementation, the transceiver module of section 1230 is used to execute the transceiver-related processes performed by the network device in the embodiment shown in FIG. 7. The processor of section 1210 is used to execute the processing-related processes performed by the network device in the embodiment shown in FIG. 7.

[0384] It should be understood that Figure 12 is merely an example and not a limitation, and the network device described above, including the processor, memory, and transceiver, may not depend on the structure shown in Figures 9, 10, or 12.

[0385] When the communication device 1200 is a chip, the chip includes a processor and a transceiver. The processor is an integrated processor, microprocessor, or integrated circuit on the chip. The transceiver can be an input / output circuit or a communication interface. In the above method embodiments, the transmitting operation of the network device can be understood as the output of the chip, and the receiving operation of the network device in the above method embodiments can be understood as the input of the chip.

[0386] Optionally, the communication device 1200 may also include a memory, which may be a memory built into the chip or a memory connected to the chip.

[0387] This application also provides a computer-readable storage medium having stored thereon computer instructions or computer programs for implementing the methods executed by a terminal device or network device in the above method embodiments.

[0388] For example, when the computer instruction or computer program is executed by a computer or processor, it can implement the method executed by the terminal device or network device in the above method embodiments.

[0389] This application also provides a computer program product containing computer instructions or computer programs, which, when executed by a computer or processor, implement the method executed by the terminal device or network device in the above method embodiments.

[0390] This application also provides a communication system, which includes a terminal device and a network device. The terminal device is used to perform some or all of the operations performed by the terminal device in the embodiment shown in FIG. 7 above, and the network device is used to perform some or all of the operations performed by the network device in the embodiment shown in FIG. 7 above.

[0391] This application also provides a chip device, including a processor, for calling a computer program or computer instructions stored in the memory, so that the processor executes the method provided in the embodiment shown in FIG7 above.

[0392] In one possible implementation, the input of the chip device corresponds to the receiving operation in any of the embodiments shown in FIG7, and the output of the chip device corresponds to the sending operation in any of the embodiments shown in FIG7.

[0393] Optionally, the processor is coupled to the memory via an interface.

[0394] Optionally, the chip device may also include a memory that stores computer programs or computer instructions.

[0395] The processor mentioned above can be a general-purpose central processing unit, a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of a program for controlling the method provided in any of the embodiments shown in Figure 7. The memory mentioned above can be read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, such as random access memory (RAM).

[0396] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the explanations and beneficial effects of the relevant contents in any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, and will not be repeated here.

[0397] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0398] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0399] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0400] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essential contribution of the technical solution of this application, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0401] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for measuring and reporting a reference signal, characterized in that, The method includes: The channel measurement results are obtained by measuring the reference signal of the first cell, which is a candidate cell for the terminal device; Receive a first signaling message, the first signaling message being used to instruct the terminal device to switch from the serving cell to the first cell; The channel measurement results are transmitted via a first physical uplink control channel (PUCCH) resource or a first physical uplink shared channel (PUSCH) resource, wherein the first PUCCH resource is the PUCCH resource of the first cell, or the first PUSCH resource is the PUSCH resource of the first cell.

2. The method of claim 1, wherein, The first PUCCH resource is located in the first portion of the bandwidth (BWP) of the first cell; the first BWP includes any of the following: Activation of BWP in the first cell; The initial BWP of the first cell; The default BWP for the first cell; or, The BWP indicated in the first signaling.

3. The method of claim 2, wherein, The first signaling includes the identifier of the first BWP.

4. The method according to claim 2 or 3, characterized in that, The first PUCCH resource is a PUCCH resource pre-configured by the network device for carrying the channel measurement results; or, The first PUCCH resource is the PUCCH resource indicated by the first signaling.

5. The method of claim 4, wherein, The method further includes: Receive first configuration information, which is used to configure the PUCCH resource corresponding to each candidate BWP in the first cell; wherein, the first BWP is one of the candidate BWPs in the first cell, and the first PUCCH resource is associated with the first BWP. Alternatively, the first configuration information is used to configure a PUCCH resource of the first cell, wherein the first PUCCH resource is the PUCCH resource configured by the first configuration information.

6. The method according to any one of claims 1 to 5, characterized in that, The transmission time of the first PUCCH resource is the time when the first reference time has elapsed for the first duration.

7. The method of claim 1, wherein, The first PUSCH resource is either a configured licensed physical uplink shared channel (CG) PUSCH resource or a dynamically licensed physical uplink shared channel (DG) PUSCH resource.

8. The method according to claim 1 or 7, characterized in that, The first PUSCH resource is the Xth transmission opportunity of the first configured authorized physical uplink shared channel (CG) PUSCH resource after the second duration following the first reference time; where X is an integer greater than or equal to 1. The first CG PUSCH resource is a CG PUSCH resource pre-configured by the network device for the first cell; or, The first CG PUSCH resource is either the CG PUSCH resource indicated in the first signaling or the CG PUSCH resource indicated by the pre-configured authorization configuration index included in the first signaling.

9. The method according to claim 6 or 8, characterized in that, The first reference time includes any of the following: The terminal device receives the first downlink control information (DCI) at the time of reception, and the first DCI is used to schedule the first signaling; The terminal device receives the first signaling at the time of reception; The timing of the terminal device sending the feedback signaling, wherein the feedback signaling is a signaling that is fed back in response to the first signaling; The time at which the terminal device sends the feedback signaling occurs after the third time interval; The time at which the terminal device sends the feedback signaling occurs after the third and fourth time durations, where the fourth time duration is the duration of the cell handover interruption; or, The moment when the handover of the first cell is completed.

10. The method of any one of claims 1, 7-9, wherein, The first PUSCH resource is the DG PUSCH resource called by the second DCI.

11. The method of claim 10, wherein, The second DCI is also used to instruct the DG PUSCH resources scheduled by the second DCI to be used to carry the channel measurement results.

12. The method of claim 10, wherein, The second DCI is also used to indicate the triggering state of the serving cell of the terminal device as indicated by the channel state information request field in the second DCI.

13. The method according to any one of claims 1 to 12, characterized in that, The step of transmitting the channel measurement results via the first PUSCH resource or the first PUCCH resource includes: When the first condition is met, the channel measurement result is sent through the first PUSCH resource or the first PUCCH resource; The first condition includes at least one of the following: Before the terminal device receives the first signaling, the network device triggers a measurement of the reference signal of the first cell; Before the terminal device receives the first signaling, the network device triggers a measurement of the reference signal of the first cell, and the channel measurement result is reported after the terminal device receives the first signaling; After the terminal device receives the first signaling, the network device configures or triggers a measurement of the reference signal of the first cell; or, After the terminal device receives the first signaling, the network device configures or triggers the measurement and reporting of the reference signal of the first cell.

14. The method according to any one of claims 1 to 13, characterized in that, Before obtaining the channel measurement results by measuring the reference signal of the first cell, the method further includes: Receive a second signaling message, which is used to trigger a measurement of the reference signal of the first cell.

15. The method of claim 14, wherein, The first signaling and the second signaling are the same signaling.

16. The method according to claim 14 or 15, characterized in that The first signaling includes at least one of the following: trigger status information, report configuration identifier, reference signal resource identifier, or reference signal resource set identifier; Wherein, the trigger state information is used to indicate a first trigger state, the first trigger state is associated with one or more reporting configurations of the serving cell of the terminal device, the one or more reporting configurations are associated with the reference signal resources of the first cell, and the reference signal resources are used to carry the reference signal; the reporting configuration identifier is used to indicate the one or more reporting configurations, the one or more reporting configurations are associated with the reference signal resources of the first cell; the reference signal resource identifier is used to indicate one or more reference signal resources, the one or more reference signal resources are used to carry the reference signal; the reference signal resource set identifier is used to indicate one or more reference signal resource sets, the reference signal resources in the one or more reference signal resource sets are used to carry the reference signal.

17. The method of claim 16, wherein, The method further includes: Receive second configuration information, which is used to configure one or more reporting configurations for the serving cell.

18. The method according to claim 16 or 17, characterized in that The one or more report configurations are associated with the reference signal resources of the first cell, including: Each of the one or more report configurations is associated with a resource configuration, and the resource configuration associated with the one or more report configurations includes the reference signal resources of the first cell.

19. The method of any one of claims 1 to 18, wherein, The method further includes: Receive capability information, wherein the capability information includes at least one of the following: The terminal device supports reporting the reference signal and / or channel measurement results of the first cell before receiving the first signaling; The terminal device supports reporting the reference signal and / or channel measurement results of the first cell during the handover process of the first cell. The terminal device supports reporting the reference signal and / or channel measurement results of the first cell after receiving the first signaling and before completing the handover of the first cell. The terminal device supports the acquisition of channel measurement results of the first cell triggered by the serving cell of the terminal device; or, The terminal device supports the acquisition and reporting of channel measurement results of the first cell triggered by the serving cell.

20. A communications device, characterized by The communication device includes a transceiver module and a processing module; the transceiver module is used to perform the transceiver operation of the method as described in any one of claims 1 to 19, and the processing module is used to perform the processing operation of the method as described in any one of claims 1 to 19.

21. A communications device, characterized by The communication device includes a processor for executing a computer program or computer instructions stored in a memory to perform the method as described in any one of claims 1 to 19.

22. A computer-readable storage medium, characterized in that, Used to store computer programs or computer instructions that, when run on a computer or processor, implement the method as described in any one of claims 1 to 19.

23. A computer program product, characterised in that, Includes a computer program or computer instructions that, when executed on a computer or processor, implement the method as described in any one of claims 1 to 19.

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