Communication method and communication apparatus

Abstract

The present application relates to a communication method and a communication apparatus. The method comprises: a terminal device receiving first information, wherein the first information indicates a first CSI reporting setting and a second CSI reporting setting; receiving second information, and receiving a first signal on the basis of a CSI-RS resource indicated by the second information; and sending third information on the basis of the first CSI reporting setting, and sending fourth information on the basis of the second CSI reporting setting, wherein the third information comprises CSI on an SBFD time unit, and the fourth information comprises CSI on a non-SBFD time unit.

Description

Communication method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 17, 2023, with application number 202311551834.7, and invention name “A Communication Method and Communication Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and more specifically, to a communication method and a communication device. Background Art

[0003] With the rapid development of fifth-generation mobile communication technology, New Radio (NR), a diverse range of communication needs have emerged. To meet the demands of these emerging services, the subband full duplex (SBFD) solution has been proposed to improve the uplink coverage of time division duplex (TDD) systems. Subband full duplex means that in TDD systems, network devices can transmit and receive signals in a single time slot or orthogonal frequency division multiplexing (OFDM) symbol using different subbands.

[0004] The study found that since the number of antenna ports on the SBFD time unit and the non-SBFD time unit may be different, the existing solution is not sufficient to support CSI measurement and reporting on the SBFD time unit and the non-SBFD time unit.

[0005] Summary of the Invention

[0006] In order to solve the above technical problems, the present application provides a communication method and a communication device, which can flexibly implement CSI measurement and reporting on SBFD time units and non-SBFD time units.

[0007] In a first aspect, a communication method is provided. This method can be executed by a sending device, or by a chip or circuit used in the sending device, etc., which is not limited in this application. For ease of description, the following description uses execution by a sending device as an example. The sending device can be a terminal device, or a chip or circuit in the terminal device, or a functional module in the terminal device that can call and execute programs.

[0008] The method includes: receiving first information, the first information indicating a first channel state information (CSI) reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information including CSI on an SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; receiving second information, the second information indicating a channel state information reference signal (CSI-reference signal, CSI-RS) resource, the CSI-RS resource being used to receive a first signal, the CSI-RS resource including a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource being used to determine the third information, and the first signal and the second sub-CSI-RS resource being used to determine the fourth information; receiving the first signal according to the CSI-RS resource; and sending third information according to the first CSI reporting setting, the third information being carried on a first physical uplink control channel (PUCCH) or a first physical uplink shared channel (PUCCH). channel, PUSCH); sending fourth information according to the second CSI reporting setting, and the fourth information is carried on the second PUCCH or the second PUSCH.

[0009] According to the solution provided in the present application, by introducing a first sub-CSI-RS resource and a second sub-CSI-RS resource (such as NZP-CSI-RS-SubResource), the first sub-CSI-RS resource and the second sub-CSI-RS resource are associated with a first CSI reporting setting and a second CSI reporting setting, respectively. That is, the first sub-CSI-RS resource is used to receive and measure the first signal (first part) in the SBFD time unit to obtain the third information, and the second sub-CSI-RS resource is used to receive and measure the first signal (second part) in the non-SBFD time unit to obtain the fourth information. The third information and the fourth information are sent through the reporting resources indicated by the first CSI reporting setting and the second CSI reporting setting, respectively. This enables the transmission and reception of CSI-RS and the performance of CSI measurement in the SBFD time unit and the non-SBFD time unit without increasing the number of CSI resources (such as NZP-CSI-RS-Resource), thereby improving the flexibility of CSI measurement and reporting in the SBFD time unit and the non-SBFD time unit.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the CSI-RS resource also includes a first period and an offset parameter, the first period and the offset parameter indicate a first time domain resource, and the method also includes: determining third information based on the first signal and the first sub-CSI-RS resource in the SBFD time unit in the first time domain resource; and determining fourth information based on the first signal and the second sub-CSI-RS resource in the non-SBFD time unit in the first time domain resource.

[0011] Based on the above solution, by carrying a first periodicity and offset parameter in a CSI-RS resource, the first signal (first portion) is received in the SBFD time unit in the first time domain resource indicated by the first periodicity and offset parameter, and the first signal (second portion) is received in the non-SBFD time unit in the first time domain resource. In this implementation, a CSI-RS resource has only one periodicity and offset parameter. Therefore, by configuring the appropriate periodicity and offset parameters, the first signal can be distributed to both the SBFD time unit and the non-SBFD time unit.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the first sub-CSI-RS resource includes at least one of the following: an identifier of the first sub-CSI-RS resource, a first power control offset (powerControlOffset), a second power control offset (powerControlOffsetSS), a first resource mapping method, or first quasi-co-location (QCL) information, the first power control offset is used to determine the power of the first sub-CSI-RS resource, and the second power control offset is used to determine the power of the first sub-CSI-RS resource. The second sub-CSI-RS resource includes at least one of the following: an identifier of the second sub-CSI-RS resource, a third power control offset, a fourth power control offset, a second resource mapping method, or second QCL information, the third power control offset is used to determine the power of the second sub-CSI-RS resource, and the fourth power control offset is used to determine the power of the second sub-CSI-RS resource.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the method further includes: receiving a first signal based on a first sub-CSI-RS resource on an SBFD time unit in a first time domain resource; and receiving a first signal based on a second sub-CSI-RS resource on a non-SBFD time unit in the first time domain resource.

[0014] Based on the above scheme, the terminal device receives and measures the first signal on the SBFD time unit according to the first sub-CSI-RS resource, and receives and measures the first signal on the non-SBFD time unit according to the second sub-CSI-RS resource, that is, the first sub-CSI-RS resource is associated with the SBFD time unit, and the second sub-CSI-RS resource is associated with the non-SBFD time unit, so as to realize the transmission and reception of CSI-RS and CSI measurement on the SBFD time unit and the non-SBFD time unit, so as to improve the flexibility of CSI measurement and reporting on the SBFD time and non-SBFD time units.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the first sub-CSI-RS resource includes a second period and an offset parameter, the second period and the offset parameter indicate a second time domain resource, the second sub-CSI-RS resource includes a third period and an offset parameter, the third period and the offset parameter indicate a third time domain resource, and the method further includes: determining third information based on the first sub-CSI-RS resource and the first signal in an SBFD time unit in the second time domain resource; and determining fourth information based on the second sub-CSI-RS resource and the first signal in a non-SBFD time unit in the third time domain resource.

[0016] Based on the above scheme, by carrying a period and offset parameter in each sub-CSI-RS resource, it is determined whether the first signal (first part) is received on the SBFD time unit in the time domain resource indicated by the period and offset parameter, or whether the first signal (second part) is received on the non-SBFD time unit. In this implementation, a CSI-RS resource includes two period and offset parameters, which are respectively included in the first sub-CSI-RS resource and the second sub-CSI-RS resource. Therefore, by configuring appropriate period and offset parameters, the second period and offset parameter and the third period and offset parameter can indicate the SBFD time unit and the non-SBFD time unit respectively, and then the terminal device can receive the first part and the second part of the first signal on the SBFD time unit and the non-SBFD time unit respectively.

[0017] In conjunction with the first aspect, in certain implementations of the first aspect, the first sub-CSI-RS resource further includes one or more of the following: an identifier of the first sub-CSI-RS resource, a first power control offset, a second power control offset, a first resource mapping mode, or first QCL information. The second sub-CSI-RS resource further includes one or more of the following: an identifier of the second sub-CSI-RS resource, a third power control offset, a fourth power control offset, a second resource mapping mode, or second QCL information.

[0018] In combination with the first aspect, in certain implementations of the first aspect, a first signal is received based on the first sub-CSI-RS resource in the SBFD time unit in the second time domain resource; and a first signal is received based on the second sub-CSI-RS resource in the SBFD time unit in the third time domain resource.

[0019] With reference to the first aspect, in certain implementations of the first aspect, the second time domain resources include only SBFD time units, and the third time domain resources include only non-SBFD time units.

[0020] Based on the above scheme, the terminal device receives and measures the first signal on the SBFD time unit according to the first sub-CSI-RS resource, and receives and measures the first signal on the non-SBFD time unit according to the second sub-CSI-RS resource, that is, the first sub-CSI-RS resource is associated with the SBFD time unit, and the second sub-CSI-RS resource is associated with the non-SBFD time unit, so as to realize the transmission and reception of CSI-RS and CSI measurement on the SBFD time unit and the non-SBFD time unit, so as to improve the flexibility of CSI measurement and reporting on the SBFD time and non-SBFD time units.

[0021] In combination with the first aspect, in some implementations of the first aspect, the first sub-CSI-RS resource is a sub-CSI-RS resource dedicated to SBFD, and the second sub-CSI-RS resource is a sub-CSI-RS resource not dedicated to SBFD.

[0022] Based on the above solution, by introducing SBFD-dedicated sub-CSI-RS resources (such as NZP-CSI-RS-SubResource-SBFD) and non-SBFD-dedicated sub-CSI-RS resources, without increasing the number of CSI resources (such as NZP-CSI-RS-Resource), CSI-RS reception and CSI measurement can be achieved in SBFD time units and non-SBFD time units, thereby improving the flexibility of CSI measurement in SBFD scenarios.

[0023] In combination with the first aspect, in certain implementations of the first aspect, before receiving the first information and before receiving the second information, the method further includes: sending first capability information, the first capability information indicating support for network-configured SBFD-dedicated sub-CSI-RS resources.

[0024] Based on the above scheme, the terminal device can report to the network device the ability to support SBFD-specific sub-CSI-RS resources, that is, the terminal device supports receiving CSI-RS and performing CSI measurement on the SBFD time unit, so that the network device can send the first information to the terminal device based on the reported capability, which can improve the reliability of communication.

[0025] In combination with the first aspect, in certain implementations of the first aspect, the first CSI reporting setting includes first indication information, the first indication information indicates that the first measurement result is reported through the resources indicated by the first CSI reporting setting, and the first measurement result includes the result measured on the first sub-CSI-RS resource. The second CSI reporting setting includes second indication information, the second indication information indicates that the resource is reported through the second CSI reporting setting, and the second measurement result includes the result measured on the second sub-CSI-RS resource.

[0026] Based on the above scheme, the first CSI report is set to the first sub-CSI-RS resource association through the first indication information, and the second CSI report is set to the second sub-CSI-RS resource association through the second indication information, so that the terminal device can send and receive CSI-RS and perform CSI measurement on the SBFD time unit and the non-SBFD time unit respectively according to the first indication information and the second indication information, so as to improve the flexibility of CSI measurement and reporting on the SBFD time and non-SBFD time units.

[0027] In combination with the first aspect, in some implementations of the first aspect, the first indication information includes an identifier of the first sub-CSI-RS resource, and the second indication information includes an identifier of the second sub-CSI-RS resource.

[0028] Based on the above scheme, the terminal device can determine the correspondence between the first CSI reporting setting and the first sub-CSI-RS resource according to the identifier of the first sub-CSI-RS resource, and can determine the correspondence between the second CSI reporting setting and the second sub-CSI-RS resource according to the identifier of the second sub-CSI-RS resource, and then send and receive CSI-RS and perform CSI measurement on the SBFD time unit and the non-SBFD time unit respectively, so as to improve the flexibility of CSI measurement and reporting on the SBFD time and non-SBFD time units.

[0029] In combination with the first aspect, in certain implementations of the first aspect, the first CSI reporting setting includes an identifier of the first CSI reporting setting, the second CSI reporting setting includes an identifier of the second CSI reporting setting, the first sub-CSI-RS resource includes an identifier of the first sub-CSI-RS resource, and the second sub-CSI-RS resource includes an identifier of the second sub-CSI-RS resource. The method also includes: the identifier of the first CSI reporting setting is smaller than the identifier of the second CSI reporting setting, and the identifier of the first sub-CSI-RS resource is smaller than the identifier of the second sub-CSI-RS resource, third information is determined based on the first signal and the first sub-CSI-RS resource, and fourth information is determined based on the first signal and the second sub-CSI-RS resource; or, the identifier of the first CSI reporting setting is greater than the identifier of the second CSI reporting setting, and the identifier of the first sub-CSI-RS resource is greater than the identifier of the second sub-CSI-RS resource, third information is determined based on the first signal and the first sub-CSI-RS resource, and fourth information is determined based on the first signal and the second sub-CSI-RS resource.

[0030] That is, the CSI reporting setting with a smaller identifier is associated with the sub-CSI-RS resource with a smaller identifier, and the CSI reporting setting with a larger identifier is associated with the sub-CSI-RS resource with a larger identifier. Optionally, the CSI reporting setting with a smaller identifier can be associated with the sub-CSI-RS resource with a larger identifier, and the CSI reporting setting with a larger identifier can be associated with the sub-CSI-RS resource with a smaller identifier. This is sufficient as long as the first CSI reporting setting and the first sub-CSI resource are associated with the SBFD time unit, and the second CSI reporting setting and the second sub-CSI resource are associated with the non-SBFD time unit.

[0031] Based on the above scheme, by making the identifier size of the CSI reporting setting correspond to the identifier size of the sub-CSI-RS resource, the terminal device can determine that the first CSI reporting setting corresponds to the first sub-CSI-RS resource, and the second CSI reporting setting corresponds to the second sub-CSI-RS resource, and then send and receive CSI-RS and perform CSI measurement on the SBFD time unit and non-SBFD time unit respectively, so as to improve the flexibility of CSI measurement and reporting on the SBFD time and non-SBFD time units.

[0032] In combination with the first aspect, in certain implementations of the first aspect, the first CSI reporting setting includes an identifier of the first CSI reporting setting, the second CSI reporting setting includes an identifier of the second CSI reporting setting, and the method further includes: the identifier of the first CSI reporting setting is less than the identifier of the second CSI reporting setting, the third information is determined based on the first signal and the first sub-CSI-RS resource, and the fourth information is determined based on the first signal and the second sub-CSI-RS resource.

[0033] That is, the CSI reporting setting with a small identifier is associated with the sub-CSI-RS resource allocated on the SBFD time unit, and the CSI reporting setting with a large identifier is associated with the sub-CSI-RS resource allocated on the non-SBFD time unit. Optionally, the CSI reporting setting with a large identifier may be associated with the sub-CSI-RS resource allocated on the SBFD time unit, and the CSI reporting setting with a small identifier may be associated with the sub-CSI-RS resource allocated on the non-SBFD time unit. This is sufficient as long as the first CSI reporting setting and the first sub-CSI resource are associated with the SBFD time unit, and the second CSI reporting setting and the second sub-CSI resource are associated with the non-SBFD time unit.

[0034] Based on the above scheme, by associating CSI reporting settings with different identifier sizes with the first sub-CSI-RS resource and the second sub-CSI-RS resource respectively, the terminal device can receive CSI-RS and perform CSI measurement based on the first sub-CSI-RS resource in the SBFD time unit, and receive CSI-RS and perform CSI measurement based on the second sub-CSI-RS resource in the non-SBFD time unit, thereby improving the flexibility of CSI measurement and reporting in the SBFD time and non-SBFD time units.

[0035] In combination with the first aspect, in certain implementations of the first aspect, the second information also indicates N1 CSI reporting configurations. Before receiving the first information and before receiving the second information, the method also includes: sending second capability information, the second capability information indicating the maximum value N of the CSI reporting setting supported by the network configuration, and N1 is a positive integer less than or equal to N.

[0036] Optionally, N is greater than 4.

[0037] Optionally, N is equal to any one of 6, 8, 10, 12, 16, and 32.

[0038] Based on the above solution, the terminal device can report the maximum number N of CSI reporting settings supported to the network device. By increasing the number of CSI reporting settings, the flexibility of CSI measurement and reporting in SBFD time and non-SBFD time units can be improved while improving communication reliability.

[0039] With reference to the first aspect, in certain implementations of the first aspect, the first CSI reporting setting is a CSI reporting setting dedicated to SBFD, and the second CSI reporting setting is a CSI reporting setting not dedicated to SBFD.

[0040] That is, the SBFD-specific CSI reporting setting is used to report the CSI measured in the SBFD time unit.

[0041] Based on the above solution, by introducing SBFD-specific CSI reporting settings (e.g., CSI-ReportConfig-SBFD) and non-SBFD-specific CSI reporting settings, it is possible to receive CSI-RS and perform CSI measurements in SBFD time units and non-SBFD time units without increasing the number of CSI reporting settings, thereby improving the flexibility of CSI measurement in SBFD scenarios.

[0042] In combination with the first aspect, in certain implementations of the first aspect, before receiving the first information and before receiving the second information, the method further includes: sending third capability information, where the third capability information indicates support for network-configured SBFD-specific CSI reporting settings.

[0043] Optionally, the second information further indicates N2 SBFD-dedicated CSI reporting settings and N3 non-SBFD-dedicated CSI reporting settings, where N2≤4, N3≤4, N2+N3≤8, and N2 and N3 are positive integers.

[0044] Based on the above scheme, the terminal device can report to the network device the ability to support SBFD-specific CSI reporting settings, that is, the terminal device supports sending the CSI-RS received and measured on the SBFD time unit through the CSI reporting settings, so that the network device can send the first information to the terminal device based on the reported capability, which can improve the reliability of communication.

[0045] In combination with the first aspect, in certain implementations of the first aspect, before receiving the first information and before receiving the second information, the method also includes: sending fourth capability information, the fourth capability information indicating that the terminal device supports the SBFD-dedicated sub-CSI-RS resources and SBFD-dedicated CSI reporting settings configured by the network device.

[0046] Based on the above scheme, the terminal device sends the fourth capability information to indicate that it supports both the SBFD-specific sub-CSI-RS resources and the SBFD-specific CSI reporting settings. Then, the network device can send the first information and the second information based on the fourth capability information, thereby saving signaling overhead and improving communication reliability.

[0047] Optionally, one or more of the first capability information, the second capability information, the third capability information, and the fourth capability information are carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the third PUSCH.

[0048] In a second aspect, a communication method is provided. This method can be executed by a sending device, or by a chip or circuit used in the sending device, etc., which is not limited in this application. For ease of description, the following description uses execution by a sending device as an example. The sending device can be a terminal device, or a chip or circuit in the terminal device, or a functional module in the terminal device that can call and execute programs.

[0049] The method includes: receiving first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-reporting setting being used to report fourth information, the third information including CSI on an SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; receiving second information, the second information indicating a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource being used to receive a first signal, the second CSI-RS resource being used to receive a second signal, the first signal being used to determine the third information, and the second signal being used to determine the fourth information; receiving the first signal according to the first CSI-RS resource; receiving the second signal according to the second CSI-RS resource; and sending third information and fourth information according to the CSI reporting setting, the third information and fourth information being carried on a first PUCCH or a first PUSCH.

[0050] According to the solution provided in the present application, by introducing the first sub-CSI reporting setting and the second sub-CSI reporting setting (such as CSI-ReportSubConfig), the first sub-CSI reporting setting and the second sub-CSI reporting setting are associated with the first CSI-RS resource and the second CSI-RS resource respectively, that is, the first CSI-RS resource is used to receive and measure the first signal in the SBFD time unit to obtain the third information, and the second CSI-RS resource is used to receive and measure the second signal in the non-SBFD time unit to obtain the fourth information, and the reporting resources indicated by the first sub-CSI reporting setting and the second CSI reporting setting in the same CSI reporting setting are used to send the third information and the fourth information respectively at the same time. Without increasing the number of CSI reporting settings (such as CSI-ReportConfig), it is possible to transmit and receive CSI-RS and perform CSI measurement on the SBFD time unit and the non-SBFD time unit, so as to improve the flexibility of CSI measurement and reporting on the SBFD time and the non-SBFD time unit.

[0051] In combination with the second aspect, in certain implementations of the second aspect, the first CSI-RS resource indicates a first time domain resource, the second CSI-RS resource indicates a second time domain resource, the first time domain resource includes an SBFD time unit, and the second time domain resource includes a non-SBFD time unit.

[0052] In combination with the second aspect, in certain implementations of the second aspect, the first CSI-RS resource is a CSI-RS resource dedicated to SBFD, and the second CSI-RS resource is a CSI-RS resource not dedicated to SBFD.

[0053] In combination with the second aspect, in certain implementations of the second aspect, before receiving the second information, the method further includes: sending first capability information, where the first capability information indicates that the terminal device supports SBFD-dedicated CSI-RS resources configured by the network device.

[0054] In combination with the second aspect, in certain implementations of the second aspect, the number of ports of the first CSI-RS resource is the same as the number of ports of the second CSI-RS resource, and the code division multiplexing (CDM) type of the first CSI-RS resource is the same as the CDM type of the second CSI-RS resource.

[0055] In combination with the second aspect, in certain implementations of the second aspect, the first sub-CSI reporting setting includes fifth information, the fifth information indicates the first port or the first CDM group, and receives the first signal according to the first CSI-RS resource, including: receiving the first signal according to the first port and the first CSI-RS resource, or receiving the first signal according to the first CDM group and the first CSI-RS resource.

[0056] In combination with the second aspect, in certain implementations of the second aspect, the second sub-CSI reporting setting includes sixth information, the sixth information indicates the second port or the second CDM group, and receives the second signal according to the second CSI-RS resource, including: receiving the second signal according to the second port and the second CSI-RS resource, or, receiving the second signal according to the second CDM group and the second CSI-RS resource.

[0057] In combination with the second aspect, in certain implementations of the second aspect, the number of ports of the first CSI-RS resource is different from the number of ports of the second CSI-RS resource, and the CDM type of the first CSI-RS resource is different from the CDM type of the second CSI-RS resource.

[0058] In combination with the second aspect, in certain implementations of the second aspect, the first sub-CSI reporting setting includes an identifier of a first CSI-RS resource, the second sub-CSI reporting setting includes an identifier of a second CSI-RS resource, the identifier of the first CSI-RS resource indicates the first CSI-RS resource, and the identifier of the second CSI-RS resource indicates the second CSI-RS resource.

[0059] In combination with the second aspect, in certain implementations of the second aspect, the first sub-CSI reporting setting includes one or more of the following: an identifier of the first sub-CSI reporting setting, a first CSI-RS port subset indication parameter, a fifth power offset (powerOffset), or a first codebook configuration parameter, the fifth power offset is used to determine the power of the first CSI-RS resource, and the first codebook configuration is used to determine the third information (e.g., CSI); the second sub-CSI reporting setting includes one or more of the following: an identifier of the second sub-CSI reporting setting, a second CSI-RS port subset indication parameter, a sixth power offset (powerOffset), or a second codebook configuration parameter, the sixth power offset is used to determine the power of the second CSI-RS resource, and the second codebook configuration is used to determine the fourth information (e.g., CSI).

[0060] With reference to the second aspect, in certain implementations of the second aspect, the first sub-CSI reporting setting is a sub-CSI reporting setting dedicated to SBFD, and the second sub-CSI reporting setting is a sub-CSI reporting setting not dedicated to SBFD.

[0061] In combination with the second aspect, in certain implementations of the second aspect, the first sub-CSI reporting setting includes first indication information, the second sub-CSI reporting setting includes second indication information, the first indication information indicates that the first measurement result is reported through the resources indicated by the first sub-CSI reporting setting, and the first measurement result includes the result measured on the first CSI-RS resource, the second indication information indicates that the second measurement result is reported through the resources indicated by the second sub-CSI reporting setting, and the second measurement result includes the result measured on the second CSI-RS resource.

[0062] In combination with the second aspect, in certain implementations of the second aspect, before receiving the first information and before receiving the second information, the method also includes: sending third capability information, the third capability information indicating that the terminal device supports the SBFD-dedicated CSI-RS resources and SBFD-dedicated CSI sub-reporting settings configured by the network device.

[0063] In combination with the second aspect, in certain implementations of the second aspect, one or more of the first capability information, the second capability information, and the fourth capability information are carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the third PUSCH.

[0064] The beneficial effects of the above-mentioned second aspect and certain implementation methods of the second aspect can be referred to the description of the first aspect and related implementation methods of the first aspect, and will not be repeated here.

[0065] In a third aspect, a communication method is provided. This method can be executed by a sending device, or by a chip or circuit used in the sending device, etc., which is not limited in this application. For ease of description, the following description uses execution by a sending device as an example. The sending device can be a terminal device, or a chip or circuit in the terminal device, or a functional module in the terminal device that can call and execute programs.

[0066] The method includes: receiving first information, the first information indicating a first CSI reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information being the CSI on an SBFD time unit, and the fourth information being the CSI on a non-SBFD time unit; receiving second information, the second information indicating a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource being used to receive a first signal, the second CSI-RS resource being used to receive a second signal, the first signal being used to determine the third information, and the second signal being used to determine the fourth information; receiving the first signal according to the first CSI-RS resource; receiving the second signal according to the second CSI-RS resource; sending the third information according to the first CSI reporting setting; sending the fourth information according to the second CSI reporting setting, the third information being carried on a first PUCCH or a first PUSCH, and the fourth information being carried on a second PUCCH or a second PUSCH.

[0067] In combination with the third aspect, in certain implementations of the third aspect, the second information further indicates N1 CSI reporting settings, N1≤N, N represents the maximum value of the CSI reporting settings supported by the terminal device and configured by the network device, and N and N1 are positive integers.

[0068] Optionally, N is greater than 4.

[0069] Optionally, N is equal to any one of 6, 8, 10, 12, 16, and 32.

[0070] With reference to the third aspect, in certain implementations of the third aspect, the first CSI reporting setting is a CSI reporting setting dedicated to SBFD, and the second CSI reporting setting is a CSI reporting setting not dedicated to SBFD.

[0071] In conjunction with the third aspect, in certain implementations of the third aspect, the first CSI-RS resource is a CSI-RS resource dedicated to SBFD, and the second CSI-RS resource is a CSI-RS resource not dedicated to SBFD, wherein the SBFD-dedicated CSI reporting setting is associated with the SBFD-dedicated CSI-RS resource, and the non-SBFD-dedicated CSI reporting setting is associated with the non-SBFD-dedicated CSI-RS resource. That is, the SBFD-dedicated CSI-RS resource is used to receive CSI-RS and measure CSI on the SBFD time unit to obtain third information, and the non-SBFD-dedicated CSI-RS resource is used to receive CSI-RS and measure CSI on the non-SBFD time unit to obtain fourth information, and the third information is sent through the reporting resource indicated by the SBFD-dedicated CSI reporting setting, and the fourth information is sent through the reporting resource indicated by the non-SBFD-dedicated CSI reporting setting.

[0072] In combination with the third aspect, in some implementations of the third aspect, before receiving the first information, the method further includes: sending first capability information, where the first capability information indicates N.

[0073] According to the solution provided in the present application, the flexibility of CSI measurement and reporting on SBFD time units and non-SBFD time units is improved by increasing the number of CSI reporting settings (e.g., CSI-ReportConfig) or introducing SBFD-specific CSI reporting settings (e.g., CSI-ReportConfig-SBFD).

[0074] In a fourth aspect, a communication method is provided. This method can be executed by a sending device, or by a chip or circuit used in the sending device, etc., which is not limited in this application. For ease of description, the following description uses execution by a sending device as an example. The sending device can be a terminal device, or a chip or circuit in the terminal device, or a functional module in the terminal device that can call and execute programs.

[0075] The method includes: receiving first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-CSI reporting setting being used to report fourth information, the third information being the CSI on the SBFD time unit, and the fourth information being the CSI on the non-SBFD time unit; receiving second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to receive a first signal, the CSI-RS resource including a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource being used to determine the third information, the first signal and the second sub-CSI-RS resource being used to determine the fourth information; receiving the first signal according to the CSI-RS resource; and sending the third information and the fourth information according to the CSI reporting setting, the third information and the fourth information being carried on the first PUCCH or the first PUSCH.

[0076] According to the solution provided in the present application, by introducing the first sub-CSI reporting setting and the second sub-CSI reporting setting (e.g., CSI-ReportSubConfig), and introducing the first sub-CSI-RS resource and the second sub-CSI-RS resource (e.g., NZP-CSI-RS-SubResource), the first sub-CSI reporting setting and the second sub-CSI reporting setting are respectively associated with the first sub-CSI-RS resource and the second sub-CSI-RS resource, that is, the first sub-CSI-RS resource is used to receive and measure the first signal (first part) in the SBFD time unit to obtain the third information, and the second sub-CSI-RS resource is used to receive and measure the first signal (second part) in the non-SBFD time unit to obtain the fourth information, and the third information and the fourth information are respectively sent at the same time through the reporting resources indicated by the first sub-CSI reporting setting and the second CSI reporting setting in the same CSI reporting setting. Without adding additional CSI reporting settings (such as CSI-ReportConfig) and the number of CSI resources (such as NZP-CSI-RS-Resource), CSI-RS transmission and reception and CSI measurement are achieved in SBFD time units and non-SBFD time units, thereby improving the flexibility of CSI measurement and reporting in SBFD time units and non-SBFD time units.

[0077] In combination with the fourth aspect, in certain implementations of the fourth aspect, the CSI-RS resource also includes a first period and an offset parameter, the first period and the offset parameter indicate a first time domain resource, and the method also includes: determining third information based on the first signal and the first sub-CSI-RS resource on an SBFD time unit in the first time domain resource; and determining fourth information based on the first signal and the second sub-CSI-RS resource on a non-SBFD time unit in the first time domain resource.

[0078] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method further includes: receiving a first signal based on a first sub-CSI-RS resource on an SBFD time unit in a first time domain resource; and receiving a first signal based on a second sub-CSI-RS resource on a non-SBFD time unit in the first time domain resource.

[0079] In combination with the fourth aspect, in certain implementations of the fourth aspect, the second time domain resources include only SBFD time units, and the third time domain resources include only non-SBFD time units.

[0080] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method further includes: receiving a first signal based on a first sub-CSI-RS resource on an SBFD time unit in a second time domain resource; and receiving a first signal based on a second sub-CSI-RS resource on a non-SBFD time unit in a third time domain resource.

[0081] In conjunction with the fourth aspect, in certain implementations of the fourth aspect, the first sub-CSI-RS resource includes one or more of the following: an identifier of the first sub-CSI-RS resource, a first power control offset, a second power control offset, a first resource mapping mode, or first QCL information. The second sub-CSI-RS resource includes one or more of the following: an identifier of the second sub-CSI-RS resource, a third power control offset, a fourth power control offset, a second resource mapping mode, or second QCL information.

[0082] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first sub-CSI-RS resource includes a second period and an offset parameter, the second period and the offset parameter indicate a second time domain resource, the second sub-CSI-RS resource includes a third period and an offset parameter, the third period and the offset parameter indicate a third time domain resource, and the method further includes: determining third information based on the first sub-CSI-RS resource and the first signal in an SBFD time unit in the second time domain resource; and determining fourth information based on the second sub-CSI-RS resource and the first signal in a non-SBFD time unit in the third time domain resource.

[0083] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first sub-CSI-RS resource is a sub-CSI-RS resource dedicated to SBFD, and the second sub-CSI-RS resource is a sub-CSI-RS resource not dedicated to SBFD.

[0084] In combination with the fourth aspect, in certain implementations of the fourth aspect, the number of ports of the first sub-CSI-RS resource is the same as the number of ports of the second sub-CSI-RS resource, and the CDM type of the first sub-CSI-RS resource is the same as the CDM type of the second sub-CSI-RS resource.

[0085] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first sub-CSI reporting setting also includes fifth information, and the fifth information indicates the first port or the first CDM group, and receives the first signal according to the CSI-RS resource, including: receiving the first signal according to the first port and the first sub-CSI-RS resource, or receiving the first signal according to the first CDM group and the first sub-CSI-RS resource.

[0086] In combination with the fourth aspect, in certain implementations of the fourth aspect, the second sub-CSI reporting setting also includes sixth information, and the sixth information indicates the second port or the second CDM group, and receives the first signal according to the CSI-RS resource, including: receiving the first signal according to the second port and the second sub-CSI-RS resource, or receiving the first signal according to the second CDM group and the second sub-CSI-RS resource.

[0087] In combination with the fourth aspect, in certain implementations of the fourth aspect, the number of ports of the first sub-CSI-RS resource is different from the number of ports of the second sub-CSI-RS resource, and the CDM type of the first sub-CSI-RS resource is different from the CDM type of the second sub-CSI-RS resource.

[0088] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first sub-CSI reporting setting includes an identifier of a first sub-CSI-RS resource, the second sub-CSI reporting setting includes an identifier of a second sub-CSI-RS resource, the identifier of the first sub-CSI-RS resource indicates the first sub-CSI-RS resource, and the identifier of the second sub-CSI-RS resource indicates the second sub-CSI-RS resource.

[0089] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first sub-CSI reporting setting is a sub-CSI reporting setting dedicated to SBFD, and the second sub-CSI reporting setting is a sub-CSI reporting setting not dedicated to SBFD.

[0090] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first sub-CSI reporting setting includes first indication information, the second sub-CSI reporting setting includes second indication information, the first indication information indicates that the first measurement result is reported through the resources indicated by the first sub-CSI reporting setting, and the first measurement result includes the result measured on the first sub-CSI-RS resource. The second indication information indicates that the second measurement result is reported through the resources indicated by the second sub-CSI reporting setting, and the second measurement result includes the result measured on the second sub-CSI-RS resource.

[0091] The beneficial effects of the fourth aspect and certain implementation methods of the fourth aspect can be referred to the description of the first aspect and related implementation methods of the first aspect, and will not be repeated here.

[0092] In a fifth aspect, a communication method is provided. This method can be executed by a sending device, or by a chip or circuit used in the sending device, etc., which is not limited in this application. For ease of description, the following description uses execution by a sending device as an example. The sending device can be a terminal device, or a chip or circuit in the terminal device, or a functional module in the terminal device that can call and execute programs.

[0093] The method includes: receiving first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-CSI reporting setting being used to report fourth information, the third information being the CSI on an SBFD time unit, and the fourth information being the CSI on a non-SBFD time unit; receiving second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to receive a first signal, and the first signal being used to determine the third information and the fourth information; receiving the first signal according to the CSI-RS resource; and sending the third information and the fourth information according to the CSI reporting setting, the third information and the fourth information being carried on a first PUCCH or a first PUSCH.

[0094] According to the solution provided in the present application, by introducing the first sub-CSI reporting setting and the second sub-CSI reporting setting (such as CSI-ReportSubConfig), the first sub-CSI reporting setting and the second sub-CSI reporting setting are respectively associated with the same CSI-RS resource, that is, the CSI-RS resource is used to receive and measure the first signal on the SBFD time unit and the non-SBFD time unit to obtain the third information and the fourth information, and the reporting resources indicated by the first sub-CSI reporting setting and the second CSI reporting setting in the same CSI reporting setting are used to send the third information and the fourth information at the same time. Without additionally increasing the number of CSI reporting settings (such as CSI-ReportConfig) and CSI resources (such as NZP-CSI-RS-Resource), it is possible to transmit and receive CSI-RS and perform CSI measurement on the SBFD time unit and the non-SBFD time unit, so as to improve the flexibility of CSI measurement and reporting on the SBFD time and the non-SBFD time unit.

[0095] In combination with the fifth aspect, in certain implementations of the fifth aspect, the CSI resource includes a first period and a bias parameter, the first period and the bias parameter indicate a first time domain resource, and the method further includes: determining third information based on the first signal on an SBFD time unit in the first time domain resource; and determining fourth information based on the first signal on a non-SBFD time unit in the first time domain resource.

[0096] In combination with the fifth aspect, in certain implementations of the fifth aspect, the first sub-CSI reporting setting also includes fifth information, and the fifth information indicates the first port or the first CDM group, and receives the first signal according to the CSI-RS resource, including: receiving the first signal according to the first port and the CSI-RS resource, or receiving the first signal according to the first CDM group and the CSI-RS resource.

[0097] In combination with the fifth aspect, in certain implementations of the fifth aspect, the first sub-CSI reporting setting also includes sixth information, the sixth information indicates the first port or the first CDM group, and the third information is determined based on the first signal, including: determining the third information based on the first signal, the CSI-RS resource and the first port, or determining the third information based on the first signal, the CSI-RS resource and the first CDM group.

[0098] In combination with the fifth aspect, in certain implementations of the fifth aspect, the second sub-CSI reporting setting also includes seventh information, and the seventh information indicates the second port or the second CDM group, and receives the first signal according to the CSI-RS resource, including: receiving the second signal according to the second port and the CSI-RS resource, or receiving the first signal according to the second CDM group and the CSI-RS resource.

[0099] In combination with the fifth aspect, in certain implementations of the fifth aspect, the second sub-CSI reporting setting also includes eighth information, the eighth information indicates the second port or the second CDM group, and the fourth information is determined based on the first signal, including: determining the fourth information based on the first signal, the CSI-RS resource and the second port, or determining the fourth information based on the first signal, the CSI-RS resource and the second CDM group.

[0100] The beneficial effects of the above-mentioned fifth aspect and certain implementation methods of the fifth aspect can be referred to the description of the first aspect and related implementation methods of the first aspect, and will not be repeated here.

[0101] In a sixth aspect, a communication method is provided. The method can be executed by a receiving device, or can also be executed by a chip or circuit for a receiving device, and this application is not limited to this. For ease of description, the following is an example of execution by a receiving device. The receiving device can be a network device, or a chip or circuit in a network device, or a central unit (CU) or distributed unit (DU) in a network device, or a functional module in a network device that can call and execute a program.

[0102] The method includes: sending first information, the first information indicating a first CSI reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information including CSI on an SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; sending second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to send a first signal, the CSI-RS resource including a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource being used to determine the third information, and the first signal and the second sub-CSI-RS resource being used to determine the fourth information; sending the first signal according to the CSI-RS resource; receiving third information according to the first CSI reporting setting, the third information being carried on a first PUCCH or a first PUSCH; receiving fourth information according to the second CSI reporting setting, the fourth information being carried on a second PUCCH or a second PUSCH.

[0103] According to the solution provided in the present application, by introducing the first sub-CSI-RS resource and the second sub-CSI-RS resource (such as NZP-CSI-RS-SubResource), the first sub-CSI-RS resource and the second sub-CSI-RS resource are associated with the first CSI reporting setting and the second CSI reporting setting, respectively, that is, the first sub-CSI-RS resource is used to send the first signal (first part) in the SBFD time unit, and the second sub-CSI-RS resource is used to send the first signal (second part) in the non-SBFD time unit, and the third information and the fourth information are received through the reporting resources indicated by the first CSI reporting setting and the second CSI reporting setting, respectively. Without increasing the number of CSI resources (such as NZP-CSI-RS-Resource), it is possible to transmit and receive CSI-RS and perform CSI measurement on the SBFD time unit and the non-SBFD time unit, thereby improving the flexibility of CSI measurement and reporting on the SBFD time and non-SBFD time units.

[0104] In combination with the sixth aspect, in certain implementations of the sixth aspect, the CSI-RS resource also includes a first period and an offset parameter, the first period and the offset parameter indicate a first time domain resource, and in the SBFD time unit in the first time domain resource, the first signal and the first sub-CSI-RS resource are used to determine the third information; in the non-SBFD time unit in the first time domain resource, the first signal and the second sub-CSI-RS resource are used to determine the fourth information.

[0105] In conjunction with the sixth aspect, in certain implementations of the sixth aspect, the first sub-CSI-RS resource includes at least one of the following: an identifier of the first sub-CSI-RS resource, a first power control offset, a second power control offset, a first resource mapping mode, or first quasi-co-location (QCL) information. The second sub-CSI-RS resource includes at least one of the following: an identifier of the second sub-CSI-RS resource, a third power control offset, a fourth power control offset, a second resource mapping mode, or second QCL information.

[0106] In combination with the sixth aspect, in certain implementations of the sixth aspect, the method further includes: sending a first signal based on the first sub-CSI-RS resource in the SBFD time unit in the first time domain resource; and sending the first signal based on the second sub-CSI-RS resource in the non-SBFD time unit in the first time domain resource.

[0107] In conjunction with the sixth aspect, in certain implementations of the sixth aspect, the first sub-CSI-RS resource includes a second periodicity and an offset parameter, the second periodicity and the offset parameter indicate a second time domain resource, the second sub-CSI-RS resource includes a third periodicity and an offset parameter, the third periodicity and the offset parameter indicate a third time domain resource, and in an SBFD time unit in the second time domain resource, the first sub-CSI-RS resource and the first signal are used to determine third information. In a non-SBFD time unit in the third time domain resource, the second sub-CSI-RS resource and the first signal are used to determine fourth information.

[0108] In combination with the sixth aspect, in certain implementations of the sixth aspect, the second time domain resources include only SBFD time units, and the third time domain resources include only non-SBFD time units.

[0109] In conjunction with the sixth aspect, in certain implementations of the sixth aspect, the first sub-CSI-RS resource further includes one or more of the following: an identifier of the first sub-CSI-RS resource, a first power control offset, a second power control offset, a first resource mapping mode, or first QCL information. The second sub-CSI-RS resource further includes one or more of the following: an identifier of the second sub-CSI-RS resource, a third power control offset, a fourth power control offset, a second resource mapping mode, or second QCL information.

[0110] In combination with the sixth aspect, in certain implementations of the sixth aspect, a first signal is sent based on the first sub-CSI-RS resource on the SBFD time unit in the second time domain resource; and a first signal is sent based on the second sub-CSI-RS resource on the SBFD time unit in the third time domain resource.

[0111] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first sub-CSI-RS resource is a sub-CSI-RS resource dedicated to SBFD, and the second sub-CSI-RS resource is a sub-CSI-RS resource not dedicated to SBFD.

[0112] In combination with the sixth aspect, in certain implementations of the sixth aspect, before sending the second information, the method further includes: receiving first capability information, the first capability information indicating support for network-configured SBFD-dedicated sub-CSI-RS resources.

[0113] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first CSI reporting setting includes first indication information, the first indication information indicates that the first measurement result is reported through the resources indicated by the first CSI reporting setting, and the first measurement result includes the result measured on the first sub-CSI-RS resource; the second CSI reporting setting includes second indication information, the second indication information indicates that the second measurement result is reported through the resources indicated by the second CSI reporting setting, and the second measurement result includes the result measured on the second sub-CSI-RS resource.

[0114] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first indication information includes an identifier of the first sub-CSI-RS resource, and the second indication information includes an identifier of the second sub-CSI-RS resource.

[0115] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first CSI reporting setting includes an identifier of the first CSI reporting setting, the second CSI reporting setting includes an identifier of the second CSI reporting setting, the first sub-CSI-RS resource includes an identifier of the first sub-CSI-RS resource, and the second sub-CSI-RS resource includes an identifier of the second sub-CSI-RS resource. The method also includes: the identifier of the first CSI reporting setting is smaller than the identifier of the second CSI reporting setting, and the identifier of the first sub-CSI-RS resource is smaller than the identifier of the second sub-CSI-RS resource, determining third information based on the first signal and the first sub-CSI-RS resource, and determining fourth information based on the first signal and the second sub-CSI-RS resource; or, the identifier of the first CSI reporting setting is greater than the identifier of the second CSI reporting setting, and the identifier of the first sub-CSI-RS resource is greater than the identifier of the second sub-CSI-RS resource, determining third information based on the first signal and the first sub-CSI-RS resource, and determining fourth information based on the first signal and the second sub-CSI-RS resource.

[0116] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first CSI reporting setting includes an identifier of the first CSI reporting setting, the second CSI reporting setting includes an identifier of the second CSI reporting setting, and the method also includes: the identifier of the first CSI reporting setting is less than the identifier of the second CSI reporting setting, the third information is determined based on the first signal and the first sub-CSI-RS resource, and the fourth information is determined based on the first signal and the second sub-CSI-RS resource.

[0117] In combination with the sixth aspect, in certain implementations of the sixth aspect, the second information also indicates N1 CSI reporting configurations. Before sending the second information, the method also includes: receiving second capability information, the second capability information indicating the maximum value N of the CSI reporting setting supported by the network configuration, and N1 is a positive integer less than or equal to N.

[0118] Optionally, N is greater than 4.

[0119] Optionally, N is equal to any one of 6, 8, 10, 12, 16 or 32.

[0120] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first CSI reporting setting is a CSI reporting setting dedicated to SBFD, and the second CSI reporting setting is a CSI reporting setting not dedicated to SBFD.

[0121] That is, the SBFD-specific CSI reporting setting is used to report the CSI measured in the SBFD time unit.

[0122] In combination with the sixth aspect, in certain implementations of the sixth aspect, before sending the second information, the method further includes: receiving third capability information, where the third capability information indicates support for network-configured SBFD-specific CSI reporting settings.

[0123] Optionally, the second information further indicates N2 SBFD-dedicated CSI reporting settings and N3 non-SBFD-dedicated CSI reporting settings, where N2≤4, N3≤4, N2+N3≤8, and N2 and N3 are positive integers.

[0124] In conjunction with the sixth aspect, in certain implementations of the sixth aspect, before sending the first information and before sending the second information, the method further includes: receiving fourth capability information, where the fourth capability information indicates that the terminal device supports SBFD-specific sub-CSI-RS resources and SBFD-specific CSI reporting settings configured by the network device. One or more of the first capability information, the second capability information, the third capability information, and the fourth capability information are carried in first signaling, where the first signaling is RRC signaling, and the first signaling is carried on a third PUSCH.

[0125] The beneficial effects of the sixth aspect and certain implementation methods of the sixth aspect can be referred to the description of the first aspect and related implementation methods of the first aspect, and will not be repeated here.

[0126] In a seventh aspect, a communication method is provided. This method can be executed by a receiving device, or can also be executed by a chip or circuit for the receiving device, and this application is not limited to this. For ease of description, the following description is based on an example of execution by a receiving device. The receiving device can be a network device, or a chip or circuit in the network device, or a CU or DU in the network device, or a functional module in the network device that can call and execute programs.

[0127] The method includes: sending first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-reporting setting being used to report fourth information, the third information including CSI on an SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; sending second information, the second information indicating a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource being used to send a first signal, the second CSI-RS resource being used to send a second signal, the first signal being used to determine the third information, and the second signal being used to determine the fourth information; sending the first signal according to the first CSI-RS resource; sending the second signal according to the second CSI-RS resource; receiving third information and fourth information according to the CSI reporting setting, the third information and fourth information being carried on a first PUCCH or a first PUSCH.

[0128] According to the solution provided in the present application, by introducing the first sub-CSI reporting setting and the second sub-CSI reporting setting (such as CSI-ReportSubConfig), the first sub-CSI reporting setting and the second sub-CSI reporting setting are associated with the first CSI-RS resource and the second CSI-RS resource respectively, that is, the first CSI-RS resource is used to send the first signal in the SBFD time unit, and the second CSI-RS resource is used to send the second signal in the non-SBFD time unit, and the third information and the fourth information are respectively received at the same time through the reporting resources indicated by the first sub-CSI reporting setting and the second CSI reporting setting in the same CSI reporting setting. Without increasing the number of CSI reporting settings (such as CSI-ReportConfig), it is possible to transmit and receive CSI-RS and perform CSI measurement on SBFD time units and non-SBFD time units, so as to improve the flexibility of CSI measurement and reporting on SBFD time and non-SBFD time units.

[0129] In combination with the seventh aspect, in certain implementations of the seventh aspect, the first CSI-RS resource indicates a first time domain resource, the second CSI-RS resource indicates a second time domain resource, the first time domain resource includes an SBFD time unit, and the second time domain resource includes a non-SBFD time unit.

[0130] In combination with the seventh aspect, in certain implementations of the seventh aspect, the first CSI-RS resource is a CSI-RS resource dedicated to SBFD, and the second CSI-RS resource is a CSI-RS resource not dedicated to SBFD.

[0131] In combination with the seventh aspect, in certain implementations of the seventh aspect, before sending the second information, the method further includes: receiving first capability information, the first capability information indicating that the terminal device supports the SBFD-dedicated CSI-RS resources configured by the network device.

[0132] In combination with the seventh aspect, in certain implementations of the seventh aspect, the number of ports of the first CSI-RS resource is the same as the number of ports of the second CSI-RS resource, and the CDM type of the first CSI-RS resource is the same as the CDM type of the second CSI-RS resource.

[0133] In combination with the seventh aspect, in certain implementations of the seventh aspect, the first sub-CSI reporting setting includes fifth information, the fifth information indicates the first port or the first CDM group, and sends the first signal according to the first CSI-RS resource, including: sending the first signal according to the first port and the first CSI-RS resource, or sending the first signal according to the first CDM group and the first CSI-RS resource.

[0134] In combination with the seventh aspect, in certain implementations of the seventh aspect, the second sub-CSI reporting setting includes sixth information, the sixth information indicates the second port or the second CDM group, and sends a second signal according to the second CSI-RS resource, including: sending a second signal according to the second port and the second CSI-RS resource, or sending a second signal according to the second CDM group and the second CSI-RS resource.

[0135] In combination with the seventh aspect, in certain implementations of the seventh aspect, the number of ports of the first CSI-RS resource is different from the number of ports of the second CSI-RS resource, and the CDM type of the first CSI-RS resource is different from the CDM type of the second CSI-RS resource.

[0136] In combination with the seventh aspect, in certain implementations of the seventh aspect, the first sub-CSI reporting setting includes an identifier of a first CSI-RS resource, the second sub-CSI reporting setting includes an identifier of a second CSI-RS resource, the identifier of the first CSI-RS resource indicates the first CSI-RS resource, and the identifier of the second CSI-RS resource indicates the second CSI-RS resource.

[0137] In conjunction with the seventh aspect, in certain implementations of the seventh aspect, the first sub-CSI reporting setting includes one or more of the following: an identifier of the first sub-CSI reporting setting, a first CSI-RS port subset indication parameter, a fifth power offset (powerOffset), or a first codebook configuration parameter, where the fifth power offset is related to the power of the first CSI-RS resource. The second sub-CSI reporting setting includes one or more of the following: an identifier of the second sub-CSI reporting setting, a second CSI-RS port subset indication parameter, a sixth power offset (powerOffset), or a second codebook configuration parameter, where the sixth power offset is related to the power of the second CSI-RS resource.

[0138] In combination with the seventh aspect, in some implementations of the seventh aspect, the first sub-CSI reporting setting is a sub-CSI reporting setting dedicated to SBFD, and the second sub-CSI reporting setting is a sub-CSI reporting setting not dedicated to SBFD.

[0139] In combination with the seventh aspect, in certain implementations of the seventh aspect, the first sub-CSI reporting setting includes first indication information, the second sub-CSI reporting setting includes second indication information, the first indication information indicates that the first measurement result is reported through the resources indicated by the first sub-CSI reporting setting, and the first measurement result includes the result measured on the first CSI-RS resource, the second indication information indicates that the second measurement result is reported through the resources indicated by the second sub-CSI reporting setting, and the second measurement result includes the result measured on the second CSI-RS resource.

[0140] In combination with the seventh aspect, in certain implementations of the seventh aspect, before sending the first information, the method further includes: receiving second capability information, the second capability information indicating that the terminal device supports the SBFD-specific sub-CSI reporting setting configured by the network device.

[0141] In combination with the seventh aspect, in certain implementations of the seventh aspect, before sending the first information and before sending the second information, the method also includes: receiving third capability information, the third capability information indicating that the terminal device supports the SBFD-dedicated CSI-RS resources and SBFD-dedicated CSI sub-reporting settings configured by the network device.

[0142] In combination with the seventh aspect, in certain implementations of the seventh aspect, one or more of the first capability information, the second capability information, the third capability information, and the fourth capability information are carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the third PUSCH.

[0143] The beneficial effects of the above-mentioned seventh aspect and certain implementation methods of the seventh aspect can be referred to the description of the second aspect and related implementation methods of the second aspect, and will not be repeated here.

[0144] In an eighth aspect, a communication method is provided. This method can be executed by a receiving device, or can also be executed by a chip or circuit for the receiving device, and this application is not limited to this. For ease of description, the following description is based on an example of execution by a receiving device. The receiving device can be a network device, or a chip or circuit in the network device, or a CU or DU in the network device, or a functional module in the network device that can call and execute programs.

[0145] The method includes: sending first information, the first information indicating a first CSI reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information being the CSI on an SBFD time unit, and the fourth information being the CSI on a non-SBFD time unit; sending second information, the second information indicating a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource being used to send a first signal, the second CSI-RS resource being used to send a second signal, the first signal being used to determine the third information, and the second signal being used to determine the fourth information; sending the first signal according to the first CSI-RS resource; sending the second signal according to the second CSI-RS resource; receiving the third information according to the first CSI reporting setting; receiving the fourth information according to the second CSI reporting setting, the third information being carried on a first PUCCH or a first PUSCH, and the fourth information being carried on a second PUCCH or a second PUSCH.

[0146] In combination with the eighth aspect, in certain implementations of the eighth aspect, the second information further indicates N1 CSI reporting settings, N1≤N, N represents the maximum value of the CSI reporting settings supported by the terminal device and configured by the network device, and N and N1 are positive integers.

[0147] Optionally, N is greater than 4.

[0148] Optionally, N is equal to any one of 6, 8, 10, 12, 16, and 32.

[0149] With reference to the third aspect, in certain implementations of the third aspect, the first CSI reporting setting is a CSI reporting setting dedicated to SBFD, and the second CSI reporting setting is a CSI reporting setting not dedicated to SBFD.

[0150] In conjunction with the third aspect, in certain implementations of the third aspect, the first CSI-RS resource is a CSI-RS resource dedicated to SBFD, and the second CSI-RS resource is a CSI-RS resource not dedicated to SBFD, wherein the SBFD-dedicated CSI reporting setting is associated with the SBFD-dedicated CSI-RS resource, and the non-SBFD-dedicated CSI reporting setting is associated with the non-SBFD-dedicated CSI-RS resource. That is, the SBFD-dedicated CSI-RS resource is used to receive CSI-RS and measure CSI on the SBFD time unit to obtain third information, and the non-SBFD-dedicated CSI-RS resource is used to receive CSI-RS and measure CSI on the non-SBFD time unit to obtain fourth information, and the third information is sent through the reporting resource indicated by the SBFD-dedicated CSI reporting setting, and the fourth information is sent through the reporting resource indicated by the non-SBFD-dedicated CSI reporting setting.

[0151] According to the solution provided in the present application, the flexibility of CSI measurement and reporting on SBFD time units and non-SBFD time units is improved by increasing the number of CSI reporting settings (e.g., CSI-ReportConfig) or introducing SBFD-specific CSI reporting settings (e.g., CSI-ReportConfig-SBFD).

[0152] In combination with the eighth aspect, in certain implementations of the eighth aspect, before sending the first information, the method further includes: receiving first capability information, the first capability information indicating N.

[0153] The beneficial effects of the above-mentioned eighth aspect and certain implementation methods of the eighth aspect can be referred to the description of the third aspect and related implementation methods of the third aspect, and will not be repeated here.

[0154] In a ninth aspect, a communication method is provided. This method can be executed by a receiving device, or can also be executed by a chip or circuit for the receiving device, and this application is not limited to this. For ease of description, the following description is based on an example of execution by a receiving device. The receiving device can be a network device, or a chip or circuit in the network device, or a CU or DU in the network device, or a functional module in the network device that can call and execute programs.

[0155] The method includes: sending first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-CSI reporting setting being used to report fourth information, the third information being the CSI on an SBFD time unit, and the fourth information being the CSI on a non-SBFD time unit; sending second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to send a first signal, the CSI-RS resource including a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource being used to determine the third information, the first signal and the second sub-CSI-RS resource being used to determine the fourth information; sending a first signal according to the CSI-RS resource; receiving third information and fourth information according to the CSI reporting setting, the third information and the fourth information being carried on a first PUCCH or a first PUSCH.

[0156] According to the solution provided in the present application, by introducing the first sub-CSI reporting setting and the second sub-CSI reporting setting (e.g., CSI-ReportSubConfig), and introducing the first sub-CSI-RS resource and the second sub-CSI-RS resource (e.g., NZP-CSI-RS-SubResource), the first sub-CSI reporting setting and the second sub-CSI reporting setting are respectively associated with the first sub-CSI-RS resource and the second sub-CSI-RS resource, that is, the first sub-CSI-RS resource is used to send the first signal (first part) in the SBFD time unit, and the second sub-CSI-RS resource is used to send the first signal (second part) in the non-SBFD time unit, and the third information and the fourth information are respectively received at the same time through the reporting resources indicated by the first sub-CSI reporting setting and the second CSI reporting setting in the same CSI reporting setting. Without adding additional CSI reporting settings (such as CSI-ReportConfig) and the number of CSI resources (such as NZP-CSI-RS-Resource), CSI-RS transmission and reception and CSI measurement are achieved in SBFD time units and non-SBFD time units, thereby improving the flexibility of CSI measurement and reporting in SBFD time units and non-SBFD time units.

[0157] In combination with the ninth aspect, in certain implementations of the ninth aspect, the CSI-RS resource also includes a first period and an offset parameter, the first period and the offset parameter indicate a first time domain resource, and the method also includes: determining third information based on the first signal and the first sub-CSI-RS resource in the SBFD time unit in the first time domain resource; and determining fourth information based on the first signal and the second sub-CSI-RS resource in the non-SBFD time unit in the first time domain resource.

[0158] In combination with the ninth aspect, in certain implementations of the ninth aspect, the method further includes: sending a first signal based on a first sub-CSI-RS resource on an SBFD time unit in a first time domain resource; and sending a first signal based on a second sub-CSI-RS resource on a non-SBFD time unit in the first time domain resource.

[0159] In combination with the ninth aspect, in certain implementations of the ninth aspect, the second time domain resources include only SBFD time units, and the third time domain resources include only non-SBFD time units.

[0160] In combination with the ninth aspect, in certain implementations of the ninth aspect, the method further includes: sending a first signal based on the first sub-CSI-RS resource on the SBFD time unit in the second time domain resource; and sending a first signal based on the second sub-CSI-RS resource on the non-SBFD time unit in the third time domain resource.

[0161] In conjunction with the ninth aspect, in certain implementations of the ninth aspect, the first sub-CSI-RS resource includes one or more of the following: an identifier of the first sub-CSI-RS resource, a first power control offset, a second power control offset, a first resource mapping mode, or first QCL information. The second sub-CSI-RS resource includes one or more of the following: an identifier of the second sub-CSI-RS resource, a third power control offset, a fourth power control offset, a second resource mapping mode, or second QCL information.

[0162] In combination with the ninth aspect, in certain implementations of the ninth aspect, the first sub-CSI-RS resource includes a second period and an offset parameter, the second period and the offset parameter indicate a second time domain resource, the second sub-CSI-RS resource includes a third period and an offset parameter, the third period and the offset parameter indicate a third time domain resource, and the method further includes: determining third information based on the first sub-CSI-RS resource and the first signal in an SBFD time unit in the second time domain resource; and determining fourth information based on the second sub-CSI-RS resource and the first signal in a non-SBFD time unit in the third time domain resource.

[0163] In combination with the ninth aspect, in certain implementations of the ninth aspect, the first sub-CSI-RS resource is a sub-CSI-RS resource dedicated to SBFD, and the second sub-CSI-RS resource is a sub-CSI-RS resource not dedicated to SBFD.

[0164] In combination with the ninth aspect, in certain implementations of the ninth aspect, the number of ports of the first sub-CSI-RS resource is the same as the number of ports of the second sub-CSI-RS resource, and the CDM type of the first sub-CSI-RS resource is the same as the CDM type of the second sub-CSI-RS resource.

[0165] In combination with the ninth aspect, in certain implementations of the ninth aspect, the first sub-CSI reporting setting also includes fifth information, and the fifth information indicates the first port or the first CDM group, and sends a first signal according to the CSI-RS resource, including: sending the first signal according to the first port and the first sub-CSI-RS resource, or sending the first signal according to the first CDM group and the first sub-CSI-RS resource.

[0166] In combination with the ninth aspect, in certain implementations of the ninth aspect, the second sub-CSI reporting setting also includes sixth information, and the sixth information indicates the second port or the second CDM group, and sends a first signal according to the CSI-RS resource, including: sending the first signal according to the second port and the second sub-CSI-RS resource, or sending the first signal according to the second CDM group and the second sub-CSI-RS resource.

[0167] In combination with the ninth aspect, in certain implementations of the ninth aspect, the number of ports of the first sub-CSI-RS resource is different from the number of ports of the second sub-CSI-RS resource, and the CDM type of the first sub-CSI-RS resource is different from the CDM type of the second sub-CSI-RS resource.

[0168] In combination with the ninth aspect, in certain implementations of the ninth aspect, the first sub-CSI reporting setting includes an identifier of a first sub-CSI-RS resource, the second sub-CSI reporting setting includes an identifier of a second sub-CSI-RS resource, the identifier of the first sub-CSI-RS resource indicates the first sub-CSI-RS resource, and the identifier of the second sub-CSI-RS resource indicates the second sub-CSI-RS resource.

[0169] In combination with the ninth aspect, in certain implementations of the ninth aspect, the first sub-CSI reporting setting is a sub-CSI reporting setting dedicated to SBFD, and the second sub-CSI reporting setting is a sub-CSI reporting setting not dedicated to SBFD.

[0170] In combination with the ninth aspect, in certain implementations of the ninth aspect, the first sub-CSI reporting setting includes first indication information, the second sub-CSI reporting setting includes second indication information, the first indication information indicates that the first measurement result is reported through the resources indicated by the first sub-CSI reporting setting, and the first measurement result includes the result measured on the first sub-CSI-RS resource, the second indication information indicates that the second measurement result is reported through the resources indicated by the second sub-CSI reporting setting, and the second measurement result includes the result measured on the second sub-CSI-RS resource.

[0171] The beneficial effects of the above-mentioned ninth aspect and certain implementation methods of the ninth aspect can be referred to the description of the fourth aspect and related implementation methods of the fourth aspect, and will not be repeated here.

[0172] In a tenth aspect, a communication method is provided. This method can be executed by a receiving device, or can also be executed by a chip or circuit for the receiving device, and this application is not limited to this. For ease of description, the following description is based on an example of execution by a receiving device. The receiving device can be a network device, or a chip or circuit in the network device, or a CU or DU in the network device, or a functional module in the network device that can call and execute programs.

[0173] The method includes: sending first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-CSI reporting setting being used to report fourth information, the third information being the CSI on an SBFD time unit, and the fourth information being the CSI on a non-SBFD time unit; sending second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to send a first signal, and the first signal being used to determine the third information and the fourth information; sending a first signal according to the CSI-RS resource; receiving the third information and the fourth information according to the CSI reporting setting, the third information and the fourth information being carried on a first PUCCH or a first PUSCH.

[0174] According to the solution provided in the present application, by introducing the first sub-CSI reporting setting and the second sub-CSI reporting setting (such as CSI-ReportSubConfig), the first sub-CSI reporting setting and the second sub-CSI reporting setting are respectively associated with the same CSI-RS resource, that is, the CSI-RS resource is used to send the first signal on the SBFD time unit and the non-SBFD time unit, and the third information and the fourth information are respectively received at the same time through the reporting resources indicated by the first sub-CSI reporting setting and the second CSI reporting setting in the same CSI reporting setting. Without additionally increasing the number of CSI reporting settings (such as CSI-ReportConfig) and CSI resources (such as NZP-CSI-RS-Resource), it is possible to transmit and receive CSI-RS and perform CSI measurement on the SBFD time unit and the non-SBFD time unit, so as to improve the flexibility of CSI measurement and reporting on the SBFD time and the non-SBFD time unit.

[0175] In combination with the tenth aspect, in certain implementations of the tenth aspect, the CSI-RS resource includes a first period and an offset parameter, the first period and the offset parameter indicate a first time domain resource, and the method also includes: determining third information based on the first signal on the SBFD time unit in the first time domain resource; and determining fourth information based on the first signal on the non-SBFD time unit in the first time domain resource.

[0176] In combination with the tenth aspect, in certain implementations of the tenth aspect, the first sub-CSI reporting setting also includes fifth information, and the fifth information indicates the first port or the first CDM group, and sends a first signal according to the CSI-RS resource, including: sending the first signal according to the first port and the CSI-RS resource, or, sending the first signal according to the first CDM group and the first CSI-RS resource.

[0177] In combination with the tenth aspect, in certain implementations of the tenth aspect, the first sub-CSI reporting setting also includes sixth information, the sixth information indicates the first port or the first CDM group, and the third information is determined based on the first signal, including: determining the third information based on the first signal, the first CSI-RS resource and the first port, or determining the third information based on the first signal, the CSI-RS resource and the first CDM group.

[0178] In combination with the tenth aspect, in certain implementations of the tenth aspect, the second sub-CSI reporting setting also includes seventh information, and the seventh information indicates the second port or the second CDM group, and receives the first signal according to the CSI-RS resource, including: receiving the second signal according to the second port and the CSI-RS resource, or, receiving the first signal according to the second CDM group and the CSI-RS resource.

[0179] In combination with the tenth aspect, in certain implementations of the tenth aspect, the second sub-CSI reporting setting also includes eighth information, the eighth information indicates the second port or the second CDM group, and the fourth information is determined according to the first signal, including: determining the fourth information according to the first signal, the CSI-RS resource and the second port, or determining the fourth information according to the first signal, the CSI-RS resource and the second CDM group.

[0180] The beneficial effects of the above-mentioned tenth aspect and certain implementation methods of the tenth aspect can be referred to the description of the fifth aspect and related implementation methods of the fifth aspect, and will not be repeated here.

[0181] In an eleventh aspect, a communication device is provided. The communication device includes: a transceiver unit, configured to receive first information, the first information indicating a first CSI reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information including CSI on an SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; the transceiver unit, further configured to receive second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to receive a first signal, the CSI-RS resource including a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource being used to determine the third information, and the first signal and the second sub-CSI-RS resource being used to determine the fourth information; the transceiver unit, further configured to receive the first signal according to the CSI-RS resource; the transceiver unit, further configured to send third information according to the first CSI reporting setting, the third information being carried on a first PUCCH or a first PUSCH; the transceiver unit, further configured to send fourth information according to the second CSI reporting setting, the fourth information being carried on a second PUCCH or a second PUSCH.

[0182] The transceiver unit can perform the reception and transmission processing in the aforementioned first aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned first aspect.

[0183] In a twelfth aspect, a communication device is provided. The communication device includes: a transceiver unit, configured to receive first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-reporting setting being used to report fourth information, the third information including CSI on an SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; the transceiver unit, further configured to receive second information, the second information indicating a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource being used to receive a first signal, the second CSI-RS resource being used to receive a second signal, the first signal being used to determine the third information, and the second signal being used to determine the fourth information; the transceiver unit, further configured to receive the first signal according to the first CSI-RS resource; the transceiver unit, further configured to receive the second signal according to the second CSI-RS resource; the transceiver unit, further configured to send third information and fourth information according to the CSI reporting setting, the third information and fourth information being carried on a first PUCCH or a first PUSCH.

[0184] The transceiver unit can perform the reception and transmission processing in the aforementioned second aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned second aspect.

[0185] In a thirteenth aspect, a communication device is provided. The communication device includes: a transceiver unit, configured to receive first information, the first information indicating a first CSI reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information being the CSI on the SBFD time unit, and the fourth information being the CSI on the non-SBFD time unit; the transceiver unit, further configured to receive second information, the second information indicating a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource being used to receive a first signal, the second CSI-RS resource being used to receive a second signal, the first signal being used to determine the third information, and the second signal being used to determine the fourth information; the transceiver unit, further configured to receive the first signal according to the first CSI-RS resource; the transceiver unit, further configured to receive the second signal according to the second CSI-RS resource; the transceiver unit, further configured to send the third information according to the first CSI reporting setting; the transceiver unit, further configured to send the fourth information according to the second CSI reporting setting, the third information being carried on the first PUCCH or the first PUSCH, and the fourth information being carried on the second PUCCH or the second PUSCH.

[0186] The transceiver unit can perform the receiving and sending processing in the aforementioned third aspect, and the processing unit can perform other processing except receiving and sending in the aforementioned third aspect.

[0187] In a fourteenth aspect, a communication device is provided. The communication device includes: a transceiver unit, configured to receive first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-CSI reporting setting being used to report fourth information, the third information being the CSI on the SBFD time unit, and the fourth information being the CSI on the non-SBFD time unit; the transceiver unit, further configured to receive second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to receive a first signal, the CSI-RS resource including a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource being used to determine the third information, and the first signal and the second sub-CSI-RS resource being used to determine the fourth information; the transceiver unit, further configured to receive the first signal according to the CSI-RS resource; the transceiver unit, further configured to send third information and fourth information according to the CSI reporting setting, the third information and the fourth information being carried on the first PUCCH or the first PUSCH.

[0188] The transceiver unit can perform the receiving and sending processing in the aforementioned fourth aspect, and the processing unit can perform other processing except receiving and sending in the aforementioned fourth aspect.

[0189] In a fifteenth aspect, a communication device is provided. The communication device includes: a transceiver unit, configured to receive first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-CSI reporting setting being used to report fourth information, the third information being the CSI on the SBFD time unit, and the fourth information being the CSI on the non-SBFD time unit; the transceiver unit, further configured to receive second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to receive a first signal, the first signal being used to determine the third information and the fourth information; the transceiver unit, further configured to receive the first signal according to the CSI-RS resource; the transceiver unit, further configured to send the third information and the fourth information according to the CSI reporting setting, the third information and the fourth information being carried on the first PUCCH or the first PUSCH.

[0190] The transceiver unit can perform the reception and transmission processing in the aforementioned fifth aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned fifth aspect.

[0191] In a sixteenth aspect, a communication device is provided. The communication device includes: a transceiver unit, configured to send first information, the first information indicating a first CSI reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information including CSI on an SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; the transceiver unit, further configured to send second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to send a first signal, the CSI-RS resource including a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource being used to determine the third information, and the first signal and the second sub-CSI-RS resource being used to determine the fourth information; the transceiver unit, further configured to send the first signal according to the CSI-RS resource; the transceiver unit, further configured to receive third information according to the first CSI reporting setting, the third information being carried on a first PUCCH or a first PUSCH; the transceiver unit, further configured to receive fourth information according to the second CSI reporting setting, the fourth information being carried on a second PUCCH or a second PUSCH.

[0192] The transceiver unit can perform the reception and transmission processing in the aforementioned sixth aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned sixth aspect.

[0193] In aspect 17, a communication device is provided. The communication device includes: a transceiver unit, configured to send first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-reporting setting being used to report fourth information, the third information including CSI on an SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; the transceiver unit, further configured to send second information, the second information indicating a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource being used to send a first signal, the second CSI-RS resource being used to send a second signal, the first signal being used to determine the third information, and the second signal being used to determine the fourth information; the transceiver unit, further configured to send the first signal according to the first CSI-RS resource; the transceiver unit, further configured to send the second signal according to the second CSI-RS resource; the transceiver unit, further configured to receive third information and fourth information according to the CSI reporting setting, the third information and fourth information being carried on a first PUCCH or a first PUSCH.

[0194] The transceiver unit can perform the receiving and sending processing in the aforementioned seventh aspect, and the processing unit can perform other processing in addition to receiving and sending in the aforementioned seventh aspect.

[0195] In aspect 18, a communication device is provided. The communication device includes: a transceiver unit, configured to send first information, the first information indicating a first CSI reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information being the CSI on the SBFD time unit, and the fourth information being the CSI on the non-SBFD time unit; the transceiver unit, further configured to send second information, the second information indicating a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource being used to send a first signal, the second CSI-RS resource being used to send a second signal, the first signal being used to determine the third information, and the second signal being used to determine the fourth information; the transceiver unit, further configured to send the first signal according to the first CSI-RS resource; the transceiver unit, further configured to send the second signal according to the second CSI-RS resource; the transceiver unit, further configured to receive the third information according to the first CSI reporting setting; and the transceiver unit, further configured to receive the fourth information according to the second CSI reporting setting, the third information being carried on the first PUCCH or the first PUSCH, and the fourth information being carried on the second PUCCH or the second PUSCH.

[0196] The transceiver unit can perform the receiving and sending processing in the aforementioned eighth aspect, and the processing unit can perform other processing in addition to receiving and sending in the aforementioned eighth aspect.

[0197] In a nineteenth aspect, a communication device is provided. The communication device includes: a transceiver unit, configured to send first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-CSI reporting setting being used to report fourth information, the third information being the CSI on the SBFD time unit, and the fourth information being the CSI on the non-SBFD time unit; the transceiver unit, further configured to send second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to send a first signal, the CSI-RS resource including a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource being used to determine the third information, and the first signal and the second sub-CSI-RS resource being used to determine the fourth information; the transceiver unit, further configured to send the first signal according to the CSI-RS resource; the transceiver unit, further configured to receive third information and fourth information according to the CSI reporting setting, the third information and the fourth information being carried on the first PUCCH or the first PUSCH.

[0198] The transceiver unit can perform the receiving and sending processing in the aforementioned ninth aspect, and the processing unit can perform other processing in addition to receiving and sending in the aforementioned ninth aspect.

[0199] In the twentieth aspect, a communication device is provided. The communication device includes: a transceiver unit, configured to send first information, the first information indicating a CSI reporting setting, the CSI reporting setting including a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting being used to report third information, the second sub-CSI reporting setting being used to report fourth information, the third information being the CSI on the SBFD time unit, and the fourth information being the CSI on the non-SBFD time unit; the transceiver unit, further configured to send second information, the second information indicating a CSI-RS resource, the CSI-RS resource being used to send a first signal, the first signal being used to determine the third information and the fourth information; the transceiver unit, further configured to send the first signal according to the CSI-RS resource; the transceiver unit, further configured to receive the third information and the fourth information according to the CSI reporting setting, the third information and the fourth information being carried on the first PUCCH or the first PUSCH.

[0200] The transceiver unit can perform the reception and transmission processing in the aforementioned tenth aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned tenth aspect.

[0201] In a twenty-first aspect, a communication device is provided. The communication device includes a transceiver, a processor, and a memory, wherein the processor is configured to control the transceiver to transmit and receive signals, the memory is configured to store a computer program, and the processor is configured to retrieve and execute the computer program from the memory, so that the communication device performs the method of any possible implementation of the first to tenth aspects.

[0202] Optionally, there are one or more processors and one or more memories.

[0203] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0204] Optionally, the communication device further includes a transmitter (transmitter) and a receiver (receiver).

[0205] In a twenty-second aspect, a communication system is provided. The communication system includes a transmitting device and a receiving device, wherein the transmitting device is configured to execute the method in any possible implementation of the first to fifth aspects, and the receiving device is configured to execute the method in any possible implementation of the sixth to tenth aspects.

[0206] Exemplarily, the sending device may be a terminal device, or a chip or circuit in the terminal device, or a functional module in the terminal device that can call and execute a program.

[0207] Exemplarily, the receiving device may be a network device, or a chip or circuit in the network device, or a CU or DU in the network device, or a functional module in the network device that can call and execute a program.

[0208] In a twenty-third aspect, a computer program is provided, which, when executed, causes the method in any possible implementation of the first to tenth aspects to be executed.

[0209] In a twenty-fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program or code, and when the computer program or code is executed, the method in any possible implementation manner of the first to tenth aspects is executed.

[0210] In a twenty-fifth aspect, a chip is provided. The chip includes at least one processor coupled to a memory, the memory being configured to store a computer program, and the processor being configured to retrieve and execute the computer program from the memory, so that a communication device equipped with the chip system performs the method of any possible implementation of aspects 1 to 10 above.

[0211] The chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0212] In a twenty-sixth aspect, a computer program product is provided, comprising: computer program code, which, when executed, causes the method in any possible implementation manner of the first to tenth aspects to be executed.

[0213] In a twenty-seventh aspect, a computer program is provided, which, when executed, causes the method in any possible implementation of the first to tenth aspects to be executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0214] FIG1 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0215] FIG2 is a schematic diagram of time-frequency division of SBFD;

[0216] FIG3 is a schematic diagram of a configuration of SBFD dedicated uplink and downlink time slots;

[0217] FIG4 is a schematic flow chart of the communication method proposed in this application;

[0218] FIG5 is a schematic flow chart of the communication method proposed in this application;

[0219] FIG6 is a schematic flow chart of the communication method proposed in this application;

[0220] FIG7 is a schematic flow chart of the communication method proposed in this application;

[0221] FIG8 is a schematic flow chart of the communication method proposed in this application;

[0222] FIG9 is a schematic block diagram of a communication device provided in an embodiment of the present application;

[0223] FIG10 is a schematic block diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0224] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0225] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR) and future communication systems, vehicle-to-other devices (V2X), where V2X may include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), etc., long term evolution-vehicle (LTE-V), Internet of Vehicles, machine type communication (MTC), Internet of Things (IoT), etc. things, IoT), long term evolution-machine (LTE-M), machine to machine (M2M), etc.

[0226] Figure 1 is a schematic diagram of a communication system provided by an embodiment of the present application. As shown in Figure 1 , the communication system 100 includes at least one network device, such as the network device 110 shown in Figure 1 ; the communication system 100 may also include at least one terminal device, such as the terminal device 120 and / or the terminal device 130 shown in Figure 1 . The network device 110 and the terminal devices 120 / 130 can communicate via a wireless link and exchange information. It is understood that network devices and terminal devices may also be referred to as communication devices.

[0227] A network device is a network-side device with wireless transceiver functions. A network device may be a device in a radio access network (RAN) that provides wireless communication functions for terminal devices, and is called a RAN device. For example, the network device may be a base station, an evolved NodeB (eNodeB), a next-generation NodeB (gNB) in a 5G mobile communication system, a base station that has been subsequently evolved by 3GPP, a transmission reception point (TRP), an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. In communication systems using different radio access technologies (RAT), the names of devices with base station functions may be different. For example, in an LTE system, it may be called an eNB or eNodeB, and in a 5G system or NR system, it may be called a gNB. This application does not limit the specific name of the base station. The network device may include one or more co-located or non-co-located transmission and reception points. For another example, the network device may include at least one of the following items: one or more centralized units (CU), one or more distributed units (DU), and one or more radio units (RU). In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, the radio access network may also be an open radio access network (O-RAN) architecture. In the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. Any of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. Exemplarily, the functions of the CU may be implemented by one entity or different entities. For example, the functions of the CU are further divided, that is, the control plane and the user plane are separated and implemented through different entities, namely the control plane CU entity (i.e., CU-CP entity) and the user plane CU entity (i.e., CU-UP entity). The CU-CP entity and the CU-UP entity can be coupled with the DU to jointly complete the functions of the access network device.For example, the CU is responsible for processing non-real-time protocols and services, implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, implementing the functions of the radio link control (RLC), media access control (MAC), and physical (PHY) layers. In this way, some functions of the wireless access network device can be implemented through multiple network function entities. These network function entities can be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (for example, a cloud platform). The network device may also include an active antenna unit (AAU). The AAU implements some physical layer processing functions, RF processing, and related functions of the active antenna. Since RRC layer information will eventually become PHY layer information, or be converted from PHY layer information, in this architecture, high-layer signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by the DU+AAU. It can be understood that the network device can be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU can be divided into a network device in the access network (radio access network, RAN), or the CU can be divided into a network device in the core network (core network, CN), and this application does not limit this. For example, in the vehicle to everything (V2X) technology, the access network device can be a road side unit (RSU). The multiple access network devices in the communication system can be base stations of the same type or different types. The base station can communicate with the terminal device or communicate with the terminal device through a relay station. In an embodiment of the present application, the device for realizing the function of the network device can be the network device itself, or it can be a device that can support the network device to realize the function, such as a chip system or a combination device or component that can realize the function of the access network device, and the device can be installed in the network device. In an embodiment of the present application, the chip system can be composed of chips, or it can include chips and other discrete devices.

[0228] A terminal device is a user-side device with wireless transceiver capabilities. It can be a fixed device, mobile device, handheld device (such as a mobile phone), wearable device, in-vehicle device, or a wireless device built into any of the above devices (such as a communication module, modem, or chip system). Terminal devices are used to connect people, objects, and machines, and can be used in a wide range of scenarios, such as cellular communications, device-to-device (D2D) communications, vehicle-to-everything (V2X) communications, machine-to-machine / machine-type communications (M2M / MTC) communications, the Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, drones, robots, and other scenarios. Exemplarily, the terminal device can be a handheld terminal in cellular communication, a communication device in D2D, an IoT device in MTC, a surveillance camera in intelligent transportation and smart cities, or a communication device on a drone, etc. The terminal device may sometimes be referred to as user equipment (UE), user terminal, user device, user unit, user station, terminal, access terminal, access station, UE station, remote station, mobile device or wireless communication device, etc. The terminal device may also be a terminal device in an IoT system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection. In an embodiment of the present application, IoT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, narrowband (NB) technology. In an embodiment of the present application, the device for realizing the function of the terminal device may be a terminal device, or a device that can support the terminal device to realize the function, such as a chip system or a combination device or component that can realize the function of the terminal device. The device can be installed in the terminal device.

[0229] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0230] For example, the communication system 100 may further include an application function (AF) network element, which is a control plane network function provided by the operator network and is used to provide application layer information; the communication system 100 may further include a session management function (SMF) network element, which is a control plane network function provided by the operator network. In the embodiment of the present application, when the communication system 100 includes the AF network element and the SMF network element, the AF can send service-related information to the network device via the SMF.

[0231] To facilitate understanding of the embodiments of the present application, the terms or technologies involved in the present application are first explained.

[0232] 1.TDD.

[0233] TDD divides time domain resources into uplink and downlink. For example, a possible TDD uplink / downlink configuration is DDDSU, where D represents a downlink timeslot, where every symbol is a downlink symbol; U represents an uplink timeslot, where every symbol is an uplink symbol; and S represents a special timeslot, which at least includes flexible symbols. Limited uplink time domain resource allocation leads to reduced uplink coverage and increased latency in TDD.

[0234] 2.SBFD.

[0235] In the SBFD scheme, a carrier is divided into multiple overlapping or non-overlapping subbands, and the transmission directions of different subbands can be different. That is, a carrier includes a non-overlapping first subband and a second subband, and the transmission directions of the first subband and the second subband are different. It should be noted that the first subband and the second subband refer to two types of subbands with different transmission directions, and do not mean that a carrier contains only two subbands. For example, a carrier includes subband #1 and subband #2, where the transmission directions of subband #1 and subband #2 are different. Alternatively, a carrier includes subband #1, subband #2, and subband #3, where the transmission directions of subband #1 and subband #3 are the same, and the transmission directions of subband #1 and subband #2 are different.

[0236] In this application, SBFD includes subband overlapping full duplex and subband non-overlapping full duplex.

[0237] 3. Sub-band.

[0238] A subband is a partial frequency band in a carrier, that is, one or more consecutive physical resource blocks (PRBs) in the frequency domain. In this application, the subband used for uplink transmission is called an uplink subband, and the subband used for downlink transmission is called a downlink subband. The subband can also be understood as a frequency resource. Currently, the base station supports FD SBFD, that is, it can simultaneously transmit on the uplink subband and receive on the downlink subband in one time slot. The terminal device only supports half-duplex (HF) SBFD, that is, it can only transmit on the uplink subband or only receive on the downlink subband in one time slot.

[0239] 4. SBFD time unit.

[0240] Frequency resources within an SBFD time unit include uplink frequency resources and downlink frequency resources, where uplink frequency resources are used for uplink transmission and downlink frequency resources are used for downlink transmission. It is understood that an SBFD time unit includes subbands for uplink and downlink transmission, and the gNB may use the subbands within the SBFD time unit for SBFD operation. In this embodiment of the present application, when the time unit is a symbol, the SBFD time unit is an SBFD symbol. When the time unit is a timeslot, a subframe, a half-frame, a frame, a mini-subframe, a mini-slot, or a transmission occasion (TO), the SBFD time unit may refer to a time unit containing an SBFD symbol.

[0241] 5. Non-SBFD time unit.

[0242] The frequency resource corresponding to each of all the symbols contained in the non-SBFD time unit is used only for downlink transmission or only for uplink transmission. In the embodiment of the present application, when the time unit is a symbol, the non-SBFD time unit is a non-SBFD symbol. When the time unit is a time slot, or a subframe, or a half frame, or a frame, or a mini-subframe, or a mini-time slot, or a TO, the non-SBFD time unit may refer to a time unit that does not contain an SBFD symbol. As an example, all the symbols in the non-SBFD time unit are downlink symbols, or all the symbols in the non-SBFD time unit are uplink symbols, or all the symbols in the non-SBFD time unit are flexible symbols, or part of the symbols in the non-full-duplex time unit are downlink symbols and part of the uplink symbols, or part of the symbols in the non-full-duplex time unit are downlink symbols, part of the uplink symbols and part of the flexible symbols, or part of the symbols in the non-full-duplex time unit are downlink symbols and part of the flexible symbols, or part of the symbols in the non-full-duplex time unit are uplink symbols and part of the flexible symbols. For example, the rectangular blocks filled with right slashes in Figure 2 represent a set of time-frequency resources for uplink transmission. The time slots occupied by them in the time domain are called uplink time units. The transmission direction of all frequency resources on these time units is uplink. These time units can be called non-SBFD time units.

[0243] Figure 2 is a schematic diagram of the time-frequency partitioning for an SBFD solution. The horizontal axis represents the time domain, and the vertical axis represents the frequency domain. Rectangles filled with left slashes in Figure 2 represent a set of time-frequency resources for downlink transmission, while rectangles filled with vertical bars represent a set of time-frequency resources for communication. The frequency resources in an SBFD time unit include uplink and downlink subbands. Non-SBFD time unit #1 may be a downlink symbol or a flexible symbol. Non-SBFD time unit #2 may be an uplink symbol or a flexible symbol.

[0244] 6. SBFD dedicated uplink and downlink timeslot configuration.

[0245] According to the different configurations of the uplink subband and downlink subband in a time slot, SBFD dedicated uplink and downlink time slot configurations may include the following three types: XXXXX, XXXXU and DXXXU, where D represents the downlink time unit, all symbols in the downlink time unit are downlink symbols, and the uplink subband cannot be configured on the downlink symbol; U represents the uplink time unit, all symbols in the uplink time unit are uplink symbols, and the downlink subband cannot be configured on the uplink symbol; X represents the SBFD time unit, and each symbol in the SBFD time unit can be configured with at least one uplink subband and at least one downlink subband at the same time.

[0246] It should be understood that the number of Xs in XXXXX, XXXXU, and DXXXU is only an example description, and the number of Xs can be configured by the network device according to actual conditions. In addition, XXXXX, XXXXU, and DXXXU can be configured through cell-level uplink and downlink time slot configuration signaling and UE-level uplink and downlink time slot configuration signaling.

[0247] Figure 3 is a schematic diagram of a dedicated uplink and downlink time slot configuration for SBFD. Figure 3(a) is a possible example of XXXXX, Figure 3(b) is a possible example of XXXXU, and Figure 3(c) is a possible example of DXXXU. In this configuration method, the UE is not aware of the uplink and downlink subbands configured on the flexible symbols, that is, the UE does not know the frequency resource locations of the uplink and downlink subbands. Therefore, if the UE determines to perform downlink transmission on the flexible symbols, the gNB should ensure that the UE is instructed to perform downlink reception only in the downlink subbands configured with the flexible symbols. If the UE determines to perform uplink transmission on the flexible symbols, the gNB should ensure that the UE is instructed to perform uplink transmission only in the uplink subbands configured with the flexible symbols.

[0248] 7. Channel state information CSI.

[0249] In the process of wireless signals traveling from the transmitter to the receiver through the wireless channel, they may experience scattering, reflection, and energy attenuation with distance, resulting in fading. In addition, wireless signals may also be interfered with by other signals at the receiver, thereby affecting the reception of wireless signals. Characteristics such as signal attenuation and interference can be characterized by CSI. Specifically, CSI may include CSI-RS resource indicator (CSI-RS resource indicator, CRI), rank indicator RI, precoding matrix indicator PMI, channel quality indicator (channel quantity indicator, CQI), synchronization signal and physical broadcast channel block (SSB) resource indicator (SSBRI), layer indicator (layer indicator, LI), L1-reference signal received power (RSRP) and L1-signal to interference plus noise ratio (SINR). CSI can be sent by the terminal to the base station through PUCCH or PUSCH.

[0250] 8. Code division multiplexing (CDM) type and CDM group.

[0251] As shown in Table 1 below, the CDM type is indicated by the cdm-Type field in the RRC information element CSI-RS-ResourceMapping, where Tables 2 to 5 show schematic diagrams of sequences corresponding to CDM types of 'noCDM', 'noCDM2', 'cdm4-FD2-TD2', and 'cdm8-FD2-TD4', where k' and w f (k′) indicates the frequency domain orthogonal cover code (OCC) used by a CDM group, l′ and w t (l′) indicates the time domain OCC used by a CDM group.

[0252] Table 1: CSI-RS locations within a slot

[0253] Table 2: Sequence w corresponding to CDM type 'noCDM' f (k′) and w t (l′)

[0254] Table 3: Sequence w corresponding to CDM type 'fd-CDM2' f (k′) and w t (l′)

[0255] Table 4: Sequence w corresponding to CDM type 'cdm4-FD2-TD2' f (k′) and w t (l′)

[0256] Table 5: Sequence w corresponding to CDM type 'cdm8-FD2-TD4' f (k′) and w t (l′)

[0257] 9. Antenna configuration on the base station side.

[0258] TDD base station antenna configuration: Transmitters and receivers on the TDD base station share a single antenna panel. Assume the total number of antenna elements is L, and the number of transmit and receive TxRUs (transceiver units) is K. For example, in an uplink time unit, K transmit TxRUs are connected to the antenna panel; in a downlink time unit, K receive TxRUs are connected to the antenna panel. In short, the number of TxRUs and antenna elements used for both transmission and reception is the same.

[0259] There are two types of SBFD base station side antenna configurations.

[0260] The first type of SBFD base station antenna configuration includes two antenna panel groups, each with L antenna elements and K transmit and receive TxRUs. During downlink time units, only the K transmit TxRUs are connected to one antenna panel group; during uplink time units, only the K receive TxRUs are connected to the other antenna panel group. During SBFD time units, the K transmit TxRUs are connected to one antenna panel group, while the K receive TRUs are connected to the other antenna panel group. In summary, in the first type of SBFD antenna configuration, the addition of an antenna panel group ensures that the number of transmit and receive TxRUs is the same during SBFD and non-SBFD time units.

[0261] The second type of SBFD base station antenna configuration includes two antenna panel groups, each with L / 2 antenna elements and K transmit and receive TxRUs. In downlink time units, the K transmit TxRUs are linked to the two antenna panel groups; in uplink time units, the K receive TxRUs are linked to the two antenna panels. During SBFD time units, K / 2 transmit TxRUs are linked to one antenna panel, while K / 2 receive TxRUs are linked to the other antenna panel. In summary, in the second type of SBFD antenna configuration, the number of transmit and receive TxRUs differs between SBFD and non-SBFD time units, requiring different CSI measurement and reporting configurations.

[0262] Below, examples are given for CSI reporting settings and CSI measurement configuration.

[0263] The CSI reporting setting (CSI Reporting Setting, CSI-ReportConfig) includes one or more of the following: CSI reporting setting ID (reportConfigId), time domain behavior of CSI reporting (reportConfigType), frequency domain granularity of CSI reporting (reportFreqConfiguration), CSI reporting quantity (reportQuantity), codebook configuration (codebookConfig), CSI measurement restriction, NZP-CSI-RS resources for channel measurement (resourcesForChannelMeasurement), NZP-CSI-RS resources for interference measurement (csi-IM-ResourcesForInterference), and CSI-IM resources for interference measurement (nzp-CSI-RS-ResourcesForInterference).

[0264] The CSI measurement setting (CSI Resource Setting, CSI-ResourceConfig) includes one or more of the following: CSI measurement setting ID (CSI-ResourceConfigId), CSI-RS resource set table (CSI-RS-ResourceSetList), and time domain behavior of CSI measurement (resourceType).

[0265] The CSI-ReportConfig is configured with at least one CSI-ResourceConfigId for channel measurement (CSI measurement), where the CSI-ResourceConfigId is an index of a CSI resource configuration (CSI-ResourceConfig).

[0266] Configure one or more NZP-CSI-RS resource sets (NZP-CSI-RS-ResourceSet) in CSI-ResourceConfig. For periodic or semi-static CSI reporting, only one NZP-CSI-RS-ResourceSet is configured in CSI-ResourceConfig; for aperiodic CSI reporting, only one or more non-zero-power CSI-RS resource sets (NZP-CSI-RS-ResourceSet) are configured in CSI-ResourceConfig.

[0267] An NZP-CSI-RS-ResourceSet may include one or more CSI-RS resources (NZP-CSI-RS-resource), and the multiple NZP-CSI-RS-resources have the same frequency domain resource configuration (starting RB, number of RBs, density (density)), number of CSI-RS ports (nrofPorts), and CDM configuration.

[0268] For example, the base station can instruct the UE to perform relevant configurations for CSI reporting through RRC parameters, such as CSI-ReportConfig. Correspondingly, when reporting, the UE reports the measurement results of the CSI-RS included in the NZP-CSI-RS-ResourceSet corresponding to the CSI-ReportConfig to the base station. The reported content may include the following: an index of an NZP CSI-RS resource, the CQI of the NZP CSI-RS resource, the PMI of the NZP CSI-RS resource, the RI of the NZP CSI-RS resource, etc. It should be noted that the UE decides which of the above contents to report based on the configuration of the base station, such as: if the base station configures the UE to report 'cri-CQI-PMI', the UE reports an index of an NZP CSI-RS resource, the CQI of the NZP CSI-RS resource, and the PMI of the NZP CSI-RS resource.

[0269] Based on the aforementioned second-category SBFD base station-side antenna configuration scheme, the number of antenna ports differs between SBFD and non-SBFD time units. Using existing schemes to measure and report CSI requires more CSI measurement and reporting resources. However, current protocols support limited CSI measurement and reporting resources, and excessive CSI measurement and reporting resources increase UE complexity and costs, making them insufficient to support CSI measurement and reporting in SBFD and non-SBFD time units.

[0270] In order to solve the above technical problems, the present application provides a communication method and a communication device, which can flexibly implement CSI measurement and reporting on SBFD time units and non-SBFD time units.

[0271] The communication method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings. The embodiment provided by the present application can be applied to the communication system shown in Figure 1 above. The technical solution of the present application is specifically described in conjunction with Figures 4 to 8. The execution subject can be a sending device or a receiving device, or a chip or circuit for a sending device or a receiving device. Among them, the sending device can be a terminal device, or a chip, a chip system or a circuit in a terminal device, or a functional module in a terminal device that can call and execute a program. The receiving device can be a network device, or a chip, a chip system or a circuit in a network device, or a CU or distributed unit DU in a network device, or a functional module in a network device that can call and execute a program. For the sake of convenience of description, the following is an example of execution by a terminal device and a network device.

[0272] Figure 4 is a flow chart of a communication method provided in an embodiment of the present application. As shown in Figure 4, the method includes the following steps.

[0273] S410, the network device sends first information to the terminal device, and correspondingly, the terminal device receives the first information from the network device.

[0274] Among them, the first information indicates the first CSI reporting setting (protocol name: CSI Reporting Setting, high-level signaling: CSI-ReportConfig) and the second CSI reporting setting. The first CSI reporting setting is used to report the third information, and the second CSI reporting setting is used to report the fourth information. The third information includes the CSI on the SBFD time unit, and the fourth information includes the CSI on the non-SBFD time unit.

[0275] Exemplarily, the third information and the fourth information may be CSI.

[0276] That is, the first CSI reporting setting is used to report CSI obtained by performing CSI measurement on SBFD time units, and the second CSI reporting setting is used to report CSI obtained by performing CSI measurement on non-SBFD time units.

[0277] Detailed descriptions of SBFD time units and non-SBFD time units can be found above and are not detailed here. Optionally, the non-SBFD time units in this application include downlink time units and flexible time units, but do not include uplink time units. It is understood that the solutions in the embodiments of this application are applicable to downlink transmissions, and downlink transmissions cannot be performed on uplink time units. Therefore, non-SBFD time units do not include uplink time units.

[0278] Below, an example is given to illustrate a specific implementation manner of the first information indicating the first CSI reporting setting and the second CSI reporting setting.

[0279] Option 1:

[0280] In a first implementation, the first CSI reporting setting includes first indication information, the first indication information indicates that the first measurement result is reported through the resources indicated by the first CSI reporting setting, and the first measurement result includes the result measured on the first sub-CSI-RS resource. The second CSI reporting setting includes second indication information, the second indication information indicates that the second measurement result is reported through the resources indicated by the second CSI reporting setting, and the second measurement result includes the result measured on the second sub-CSI-RS resource.

[0281] That is, the first CSI reporting setting may be associated only with the first sub-CSI-RS resource, and the second CSI reporting setting may be associated only with the second sub-CSI-RS resource.

[0282] Optionally, the first information indicates one or more pairs of CSI reporting settings (e.g., a first CSI reporting setting and a second CSI reporting setting). Each pair of CSI reporting settings may be associated with the same CSI resource setting, and different pairs of CSI reporting settings may be associated with different CSI resource settings. For example, the first CSI reporting setting and the second CSI reporting setting are associated with the same CSI resource setting, i.e., each CSI resource indicated by the CSI resource setting includes the first sub-CSI-RS resource and the second sub-CSI-RS resource.

[0283] Optionally, the CSI resource setting involved in this application is only used for channel measurement (high-layer signaling: resourcesForChannelMeasurement).

[0284] Exemplarily, the first indication information and the second indication information may be 1 bit in size. For example, the first indication information may be a first value of "0" and the second indication information may be a second value of "1." Assuming that the first CSI reporting configuration and the second CSI reporting configuration are associated with CSI resource configuration #1, and the CSI-RS resources in CSI resource configuration #1 include a first sub-CSI-RS resource and a second sub-CSI-RS resource, the first sub-CSI-RS resource includes an SBFD time unit, and the second sub-CSI-RS resource includes a non-SBFD time unit, then "0" may indicate that the first CSI reporting configuration is associated with the first sub-CSI-RS resource including the SBFD time unit, and "1" may indicate that the second CSI reporting configuration is associated with the second sub-CSI-RS resource including the non-SBFD time unit. For another example, the first indication information may be a first value of "1" and the second indication information may be a second value of "0." In this case, "1" may indicate that the first CSI reporting configuration is associated with the first sub-CSI-RS resource including the SBFD time unit, and "0" may indicate that the second CSI reporting configuration is associated with the second sub-CSI-RS resource including the non-SBFD time unit. That is, the first CSI reporting setting is used to report CSI obtained by performing CSI measurement on SBFD time units, and the second CSI reporting setting is used to report CSI obtained by performing CSI measurement on non-SBFD time units.

[0285] Exemplarily, the first indication information includes an identifier of the first sub-CSI-RS resource, and the second indication information includes an identifier of the second sub-CSI-RS resource. Therefore, the terminal device can determine the first sub-CSI-RS resource based on the identifier of the first sub-CSI-RS resource included in the first CSI reporting setting, and then determine that the first CSI reporting setting is used to report the results obtained by measuring on the first sub-CSI-RS resource, and the terminal device can determine the second sub-CSI-RS resource based on the identifier of the second sub-CSI-RS resource included in the second CSI reporting setting, and then determine that the second CSI reporting setting is used to report the results obtained by measuring on the second sub-CSI-RS resource. That is, the first CSI reporting setting is used to report the CSI obtained by performing CSI measurement on the first sub-CSI-RS resource, and the second CSI reporting setting is used to report the CSI obtained by performing CSI measurement on the second sub-CSI-RS resource.

[0286] In a second implementation, the first CSI reporting setting includes an identifier of the first CSI reporting setting, the second CSI reporting setting includes an identifier of the second CSI reporting setting, the first sub-CSI-RS resource includes an identifier of the first sub-CSI-RS resource, and the second sub-CSI-RS resource includes an identifier of the second sub-CSI-RS resource. For example, when the identifier of the first CSI reporting setting is smaller than the identifier of the second CSI reporting setting, and the identifier of the first sub-CSI-RS resource is smaller than the identifier of the second sub-CSI-RS resource, the terminal device determines the third information based on the first signal and the first sub-CSI-RS resource, and determines the fourth information based on the first signal and the second sub-CSI-RS resource; for another example, when the identifier of the first CSI reporting setting is greater than the identifier of the second CSI reporting setting, and the identifier of the first sub-CSI-RS resource is greater than the identifier of the second sub-CSI-RS resource, the terminal device determines the third information based on the first signal and the first sub-CSI-RS resource, and determines the fourth information based on the first signal and the second sub-CSI-RS resource.

[0287] That is to say, the size of the identifier of the CSI reporting setting is associated with the size of the identifier of the sub-CSI-RS resource. For example, the CSI reporting setting with a large ID is associated with the sub-CSI-RS resource with a large ID, and the CSI reporting setting with a small ID is associated with the sub-CSI-RS resource with a small ID.

[0288] In a third implementation, the first CSI reporting setting includes an identifier of the first CSI reporting setting, and the second CSI reporting setting includes an identifier of the second CSI reporting setting. For example, when the identifier of the first CSI reporting setting is less than the identifier of the second CSI reporting setting, the terminal device can determine the third information based on the first signal and the first sub-CSI-RS resource, and determine the fourth information based on the first signal and the second sub-CSI-RS resource. For another example, when the identifier of the first CSI reporting setting is greater than the identifier of the second CSI reporting setting, the terminal device can determine the third information based on the first signal and the first sub-CSI-RS resource, and determine the fourth information based on the first signal and the second sub-CSI-RS resource.

[0289] That is to say, the size of the identifier of the CSI reporting setting is associated with the sub-CSI-RS resource allocated on the SBFD time unit or the non-SBFD time unit, for example, the first CSI reporting setting with a small ID is associated with the first sub-CSI-RS resource allocated on the SBFD time unit, and the second CSI reporting setting with a large ID is associated with the second sub-CSI-RS resource allocated on the non-SBFD time unit, or the first CSI reporting setting with a large ID is associated with the first sub-CSI-RS resource allocated on the SBFD time unit, and the second CSI reporting setting with a small ID is associated with the second sub-CSI-RS resource allocated on the non-SBFD time unit.

[0290] Optionally, before receiving the first information and before receiving the second information, the method further includes: the terminal device sending second capability information to the network device, the second capability information indicating that the terminal device supports a maximum value N of CSI reporting settings configured by the network. Optionally, the second information further indicates N1 CSI reporting configurations, where N1 is a positive integer less than or equal to N. In other words, the terminal device does not expect the number of CSI reporting settings configured for it by the network to exceed N.

[0291] Exemplarily, N is greater than 4, for example, N may be equal to any one of 6, 8, 10, 12, 16, and 32. By increasing the number of CSI reporting settings, the flexibility of CSI reporting in the SBFD scenario may be improved.

[0292] Optionally, the second capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0293] Option 2:

[0294] In one implementation, the first CSI reporting setting is a CSI reporting setting dedicated to SBFD, and the second CSI reporting setting is a CSI reporting setting not dedicated to SBFD. That is, the first information in this implementation may indicate two types of CSI reporting settings, for example, a first type of CSI reporting setting (i.e., a CSI reporting setting dedicated to SBFD) and a second type of CSI reporting setting (i.e., a CSI reporting setting not dedicated to SBFD).

[0295] Optionally, the SBFD-specific CSI reporting setting is used to report the CSI measured in the SBFD time unit, and the non-SBFD-specific CSI reporting setting is used to report the CSI measured in the non-SBFD time unit.

[0296] Optionally, the first type of CSI reporting setting is associated only with the first type of sub-CSI-RS resources in the following step S420, and the second CSI reporting setting is associated only with the second type of sub-CSI-RS resources in the following step S420. In other words, the SBFD-specific CSI reporting setting is associated only with the SBFD-specific sub-CSI-RS resources, and the non-SBFD-specific CSI reporting setting is associated only with the non-SBFD-specific sub-CSI-RS resources. Therefore, the SBFD-specific CSI reporting setting is used to report the CSI measured on the SBFD-specific sub-CSI-RS resources, and the non-SBFD-specific CSI reporting setting is used to report the CSI measured on the non-SBFD-specific sub-CSI-RS resources.

[0297] It should be noted that the names of the above-mentioned first type of CSI reporting settings (or, SBFD-specific CSI reporting settings) and the second type of CSI reporting settings (or, non-SBFD-specific CSI reporting settings) are only examples given for ease of understanding, and this application does not limit them. It should be understood that they can be distinguished by different high-layer signaling names. For example, high-layer signaling CSI-ReportConfig-SBFD and CSI-ReportConfig can be used to indicate the SBFD-specific CSI reporting settings and the non-SBFD-specific CSI reporting settings, respectively, so as to distinguish them from the CSI reporting settings of the prior art (such as CSI-ReportConfig, csi-ReportConfigId). Optionally, an ID is reallocated for the SBFD-specific CSI reporting settings (such as csi-ReportConfigId-SBFD).

[0298] Optionally, before receiving the first information and before receiving the second information, the method further includes: the terminal device sends third capability information to the network device, the third capability information indicating that the terminal device supports the SBFD-specific CSI reporting setting configured by the network.

[0299] Optionally, the third capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0300] Optionally, the second information may further indicate N2 SBFD-specific CSI reporting settings and N3 non-SBFD-specific CSI reporting settings, where N2 ≤ 4, N3 ≤ 4, N2 + N3 ≤ 8, and N2 and N3 are positive integers. It should be understood that the number of SBFD-specific CSI reporting settings and non-SBFD-specific CSI reporting settings is less than or equal to 4, maintaining consistency with the number of CSI reporting settings in existing solutions, minimizing changes to the standard, and implicitly increasing the total number of CSI reporting settings by adding SBFD-specific CSI reporting settings.

[0301] S420, the network device sends second information to the terminal device, and correspondingly, the terminal device receives the second information from the network device.

[0302] Among them, the second information indicates the CSI-RS resource (protocol name: NZP CSI-RS resource, high-layer signaling: nzp-CSI-RS-Resource), the CSI-RS resource is used to receive the first signal, the CSI-RS resource includes the first sub-CSI-RS resource and the second sub-CSI-RS resource, the first signal and the first sub-CSI-RS resource are used to determine the third information, and the first signal and the second sub-CSI-RS resource are used to determine the fourth information.

[0303] Optionally, the CSI-RS resource is included in a CSI resource setting (protocol name: CSI Resource Setting, higher layer signaling: CSI-ResourceConfig). For example, the second information indicates the CSI resource setting, and the CSI resource setting indicates the CSI-RS resource.

[0304] The following is an example of a specific implementation manner in which the second information indicates the CSI-RS resource.

[0305] Option 1:

[0306] In one implementation, the CSI-RS resource further includes a first periodicity and offset parameter, which (higher layer signaling: periodicityAndOffset) indicates a first time domain resource. That is, the second information in this implementation may indicate all CSI-RS resources in a CSI resource configuration, where each CSI-RS resource includes the first periodicity and offset parameter, as well as two sub-CSI-RS resources (e.g., a first sub-CSI-RS resource and a second sub-CSI-RS resource).

[0307] Optionally, in the SBFD time unit in the first time domain resource, the terminal device determines the third information based on the first signal and the first sub-CSI-RS resource; and / or, in the non-SBFD time unit in the first time domain resource, the terminal device determines the fourth information based on the first signal and the second sub-CSI-RS resource.

[0308] Optionally, the first sub-CSI-RS resource indicates the parameters used for sending / receiving CSI-RS and measuring CSI on the SBFD time unit, and the second sub-CSI-RS resource indicates the parameters used for sending / receiving CSI-RS and measuring CSI on the non-SBFD time unit.

[0309] Exemplarily, the first sub-CSI-RS resource includes at least one of the following parameters:

[0310] (1) An identifier of the first sub-CSI-RS resource, such as a sub-NZP-CSI-RS resource ID, used to identify the first sub-CSI-RS resource;

[0311] (2) a first power control offset (higher layer signaling: powerControlOffset), where powerControlOffset is used to represent the power difference / ratio between the power of the PDSCH resource and the power of the NZP CSI-RS resource. The first power control offset is used to determine the power of the first sub-CSI-RS resource. Optionally, the terminal device determines the power of the first sub-CSI-RS resource based on the first power control offset and the power on the PDSCH resource.

[0312] (3) A second power control offset (high-layer signaling: powerControlOffsetSS), where powerControlOffsetSS is used to represent the power difference / ratio between the power of the NZP CSI-RS resource and the power of the SSS resource. The second power control offset is used to determine the power of the second sub-CSI-RS resource. Optionally, the terminal device determines the power of the second sub-CSI-RS resource based on the second power control offset and the power on the Secondary Synchronization Signal (SSS) resource.

[0313] (4) A first resource mapping mode (high-layer signaling: resourceMapping), indicating the time-frequency resource location and / or size of the first sub-CSI-RS resource;

[0314] (5) First QCL information (high-layer signaling: qcl-InfoPeridicCSI-RS);

[0315] Exemplarily, the second sub-CSI-RS resource includes at least one of the following parameters:

[0316] (1) an identifier of the second sub-CSI-RS resource, such as sub-NZP-CSI-RS resource ID2, used to identify the second sub-CSI-RS resource;

[0317] (2) a third power control offset (higher layer signaling: powerControlOffset), where powerControlOffset is used to represent the power difference / ratio between the power of the PDSCH resource and the power of the NZP CSI-RS resource. The third power control offset is used to determine the power of the first sub-CSI-RS resource. Optionally, the terminal device determines the power of the second sub-CSI-RS resource based on the third power control offset and the power on the PDSCH resource.

[0318] (3) A fourth power control offset (high-layer signaling: powerControlOffsetSS), where powerControlOffsetSS is used to represent the power difference / ratio between the power of the NZP CSI-RS resource and the power of the SSS resource. The fourth power control offset is used to determine the power of the first sub-CSI-RS resource. Optionally, the terminal device determines the power of the second sub-CSI-RS resource based on the fourth power control offset and the power on the SSS resource.

[0319] (4) A second resource mapping mode (high-layer signaling: resourceMapping), indicating the time-frequency resource location and / or size of the second sub-CSI-RS resource;

[0320] (5) Second QCL information (high-layer signaling: qcl-InfoPeridicCSI-RS).

[0321] Exemplarily, the parameters included in the first sub-CSI-RS resource or the second sub-CSI-RS resource are as follows.

[0322] It should be understood that a CSI-RS resource in this implementation has only one period and offset parameter (e.g., a first period and offset parameter), which is included in the CSI-RS resource. By configuring appropriate first period and offset parameters, the CSI-RS can be allocated to both the SBFD time unit and the non-SBFD time unit.

[0323] Option 2:

[0324] In one implementation, the first sub-CSI-RS resource includes a second periodicity and an offset parameter, which indicate a second time domain resource. The second sub-CSI-RS resource includes a third periodicity and an offset parameter, which indicate a third time domain resource. That is, the second information in this implementation may indicate all CSI-RS resources in a CSI resource setting, where each CSI-RS resource includes two sub-CSI-RS resources, such as a first sub-CSI-RS resource and a second sub-CSI-RS resource.

[0325] Optionally, in the SBFD time unit in the second time domain resource, the terminal device determines the third information based on the first sub-CSI-RS resource and the first signal; and / or, in the non-SBFD time unit in the third time domain resource, the terminal device determines the fourth information based on the second sub-CSI-RS resource and the first signal.

[0326] Optionally, the second time domain resources include only SBFD time units, and the third time domain resources include only non-SBFD time units. In other words, the second time domain resources do not include non-SBFD time units, and the third time domain resources do not include SBFD time units. Therefore, the first sub-CSI-RS resource can indicate the parameters used for CSI-RS transmission / reception and CSI measurement on the SBFD time unit, and the second sub-CSI-RS resource can indicate the parameters used for CSI-RS transmission / reception and CSI measurement on the non-SBFD time unit. It should be noted that this optional implementation method has no standard impact and can be implemented by the network device configuring appropriate period and offset parameters.

[0327] Exemplarily, the first sub-CSI-RS resource also includes at least one of the following parameters: an identifier of the first sub-CSI-RS resource; a first power control bias, a second power control bias, a first resource mapping method, or a first QCL information; the second sub-CSI-RS resource also includes one or more of the following: an identifier of the second sub-CSI-RS resource, a third power control bias, a fourth power control bias, a second resource mapping method, or a second QCL information. For specific explanations, please refer to the relevant description in the above-mentioned scheme 1.

[0328] Exemplarily, the parameters included in the first sub-CSI-RS resource or the second sub-CSI-RS resource are as follows.

[0329] It should be understood that a CSI-RS resource in this implementation includes two periods and offset parameters (for example, a second period and offset parameter, a third period and offset parameter), which are respectively included in the first sub-CSI-RS resource and the second sub-CSI-RS resource. By configuring appropriate period and offset parameters, the second time domain resource indicated by the second period and offset parameter can include (or only include) SBFD time units, and the third time domain resource indicated by the third period and offset parameter can include (or only include) non-SBFD units.

[0330] Option 3:

[0331] In one implementation, the first sub-CSI-RS resource is a sub-CSI-RS resource dedicated to SBFD, and the second sub-CSI-RS resource is a sub-CSI-RS resource not dedicated to SBFD. That is, the second information in this implementation may indicate all CSI-RS resources in a CSI resource setting, where each CSI-RS resource includes two types of sub-CSI-RS resources, such as a first type of sub-CSI-RS resource (i.e., a sub-CSI-RS resource dedicated to SBFD) and a second type of sub-CSI-RS resource (i.e., a sub-CSI-RS resource not dedicated to SBFD).

[0332] Optionally, in the SBFD time unit, the terminal device determines the third information based on the first signal and the sub-CSI-RS resource dedicated to SBFD; and / or, in the non-SBFD time unit, the terminal device determines the fourth information based on the first signal and the sub-CSI-RS resource dedicated to non-SBFD.

[0333] Optionally, the SBFD-dedicated sub-CSI-RS resource may indicate the parameters used for CSI-RS transmission / reception and CSI measurement on the SBFD time unit, and the non-SBFD-dedicated sub-CSI-RS resource may indicate the parameters used for CSI-RS transmission / reception and CSI measurement on the non-SBFD time unit.

[0334] In one example, the CSI resource includes a first period and an offset parameter. Optionally, the first type of CSI-RS resource includes at least one of the following parameters: an identifier of a first sub-CSI-RS resource, a first power control offset, a second power control offset, a first resource mapping method (high-layer signaling: resourceMapping), and a first QCL information. The second sub-CSI-RS resource includes at least one of the following parameters: an identifier of a second sub-CSI-RS resource, a third power control offset, a fourth power control offset, a second resource mapping method, and a second QCL information. For specific explanations, please refer to the relevant description in the above-mentioned solution 1.

[0335] In another example, the first type of CSI-RS resources includes a second period and an offset parameter, and the second type of CSI-RS resources includes a third period and an offset parameter. Optionally, the first type of CSI-RS resources also includes at least one of the following parameters: an identifier of a first sub-CSI-RS resource; a first power control offset, a second power control offset, a first resource mapping method, or a first QCL information; the second sub-CSI-RS resources also include one or more of the following: an identifier of a second sub-CSI-RS resource, a third power control offset, a fourth power control offset, a second resource mapping method, or a second QCL information. For specific explanations, please refer to the relevant description in the above-mentioned solution 2.

[0336] It should be noted that the names of the above-mentioned first type of sub-CSI-RS resources (or, sub-CSI-RS resources dedicated to SBFD) and the second type of sub-CSI-RS resources (or, sub-CSI-RS resources dedicated to non-SBFD) are only examples given for ease of understanding, and this application does not limit them. It should be understood that they can be distinguished by different high-layer signaling names. For example, high-layer signaling nzp-CSI-RS-SubResource-SBFD and nzp-CSI-RS-SubResource can be used to indicate the sub-CSI-RS resources dedicated to SBFD and the sub-CSI-RS resources dedicated to non-SBFD, respectively, so as to distinguish them from the CSI-RS resources (nzp-CSI-RS-Resource, nzp-CSI-RS-ResourceId) in the prior art. Optionally, the ID of the sub-CSI-RS resource dedicated to SBFD is reallocated (for example, nzp-CSI-RS-SubResourceId-SBFD).

[0337] Exemplarily, the parameters included in the SBFD-dedicated sub-CSI-RS resources and the non-SBFD-dedicated sub-CSI-RS resources are as follows.

[0338] Optionally, before executing the above steps S410 and S420, that is, before the terminal device receives the first information and before receiving the second information, the method also includes: the terminal device sends first capability information to the network device, and the first capability information indicates that the terminal device supports the SBFD dedicated sub-CSI-RS resources configured by the network.

[0339] Optionally, the first capability information is carried in a first signaling, the first signaling is an RRC signaling, and the first signaling is carried on a PUSCH.

[0340] Optionally, the first capability information and the third capability information involved above may be sent via fourth capability information. For example, before receiving the first information and before receiving the second information, the method further includes: the terminal device sending fourth capability information to the network device, the fourth capability information indicating that the terminal device supports the SBFD-specific sub-CSI-RS resources and SBFD-specific CSI reporting settings configured by the network device.

[0341] Optionally, the fourth capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0342] Optionally, this application does not limit the order of execution of the above steps S410 and S420. For example, the network device may first send the first information to the terminal device, and then send the second information; or, the network device may first send the second information to the terminal device, and then send the first information; or, the network device may send the first information and the second information to the terminal device at the same time. Optionally, when the network device sends the first information and the second information to the terminal device at the same time, the first information and the second information may be sent through the same signaling (such as RRC, DCI signaling), or carried in the same data packet; or, the first information and the second information may also be sent through two signalings, or carried in two data packets, and this application does not limit this.

[0343] S430, the network device sends a first signal to the terminal device, and correspondingly, the terminal device receives the first signal from the network device.

[0344] Exemplarily, the first signal is a CSI-RS. In this implementation, the first signal is a CSI-RS allocated to both the SBFD time unit and the non-SBFD time unit. For example, the network device transmits the first signal on the first sub-CSI-RS resource and the second sub-CSI-RS resource, and the terminal device receives the first signal on the first sub-CSI-RS resource and the second sub-CSI-RS resource.

[0345] It should be understood that the CSI-RS in the embodiment of the present application cannot be sent on the uplink time unit.

[0346] In one implementation, based on solution 1 of step S420 above, during an SBFD time unit in the first time domain resource, the network device sends a first signal to the terminal device based on the first sub-CSI-RS resource, and correspondingly, the terminal device receives the first signal from the network device based on the first sub-CSI-RS resource. During a non-SBFD time unit in the first time domain resource, the network device sends a first signal to the terminal device based on the second sub-CSI-RS resource, and correspondingly, the terminal device receives the first signal from the network device based on the second sub-CSI-RS resource.

[0347] That is, the network device sends CSI in the SBFD time unit and the non-SBFD time unit in the first time domain resource, and correspondingly, the terminal device receives CSI in the SBFD time unit and the non-SBFD time unit in the first time domain resource.

[0348] In one implementation, based on solution 2 of step S420 above, in the SBFD time unit in the second time domain resource, the network device sends a first signal to the terminal device according to the first sub-CSI-RS resource, and correspondingly, the terminal device receives the first signal from the network device according to the first sub-CSI-RS resource; and in the non-SBFD time unit in the third time domain resource, the network device sends a first signal to the terminal device according to the second sub-CSI-RS resource, and correspondingly, the terminal device receives the first signal from the network device according to the second sub-CSI-RS resource.

[0349] That is, the network device sends CSI on the SBFD time unit in the second time domain resources and the non-SBFD time unit in the third time domain resources. Correspondingly, the terminal device receives CSI on the SBFD time unit in the second time domain resources and the non-SBFD time unit in the third time domain resources.

[0350] S440: The terminal device determines third information based on the first signal and the first sub-CSI-RS resource.

[0351] Exemplarily, the first signal may be a CSI-RS, and the third information may be a CSI.

[0352] Optionally, the third information may be CSI on a SBFD time unit, which may be understood as: the terminal device measures CSI-RS on a SBFD time unit to obtain the third information.

[0353] Exemplarily, the third information may be determined according to the first signal (first part) of the first (type) sub-CSI-RS resource indication associated with the first (type) CSI reporting setting.

[0354] Exemplarily, the terminal device receives a first signal (first part) on a first (type) sub-CSI-RS resource, and measures the received first signal according to information contained in the first (type) sub-CSI-RS resource to obtain third information.

[0355] S450, the terminal device sends third information to the network device according to the first CSI reporting setting, and correspondingly, the network device receives the third information from the terminal device according to the first CSI reporting setting.

[0356] The third information may be carried on the first PUCCH or the first PUSCH. Optionally, the first PUCCH or the first PUSCH may be considered as a PUCCH or a PUSCH.

[0357] Optionally, the third information may be carried on a third signal, where the third signal is determined according to the first (type) CSI reporting setting.

[0358] S460: The terminal device determines fourth information according to the first signal and the second sub-CSI-RS resource.

[0359] Exemplarily, the first signal may be a CSI-RS, and the fourth information may be a CSI.

[0360] Optionally, the fourth information may be CSI on a non-SBFD time unit, which may be understood as: the terminal device measures the CSI-RS on a non-SBFD time unit to obtain the fourth information.

[0361] Exemplarily, the fourth information may be determined according to the first signal (second part) of the second (type) sub-CSI-RS resource indication associated with the second (type) CSI reporting setting.

[0362] Exemplarily, the terminal device receives the first signal (second part) on the second (type) sub-CSI-RS resource, and measures the received first signal according to the information contained in the second (type) sub-CSI-RS resource to obtain fourth information.

[0363] S470, the terminal device sends fourth information to the network device according to the second CSI reporting setting, and correspondingly, the network device receives the fourth information from the terminal device according to the second CSI reporting setting.

[0364] The fourth information may be carried on a second PUCCH or a second PUSCH. Optionally, the second PUCCH or the second PUSCH may be considered as a PUCCH or a PUSCH.

[0365] Optionally, the fourth information may be carried on a fourth signal, where the fourth signal is determined according to the second (type) CSI reporting setting.

[0366] It should be understood that in the above steps S440 and S460, the third information (such as CSI) on the SBFD time unit and the fourth information (such as CSI) on the non-SBFD time unit are measured separately. This is because the first CSI reporting setting and the second CSI reporting setting are respectively associated with two different sub-CSI-RS resources (for example, the first sub-CSI-RS resource and the second sub-CSI-RS resource).

[0367] It should also be understood that in the above steps S450 and S470, the third information (such as CSI) on the SBFD time unit and the fourth information (such as CSI) on the non-SBFD time unit are reported separately. This is because two CSI reporting settings are used (for example, the first CSI reporting setting and the second CSI reporting setting), that is, the third information and the fourth information are carried on different PUSCHs or PUCCHs.

[0368] Optionally, this application does not limit the order of execution of the above steps S440-S450 and steps S460-S470, that is, this application does not specifically limit the order of determining and sending the third information, and determining and sending the fourth information. For example, the terminal device may first determine the third information, then determine the fourth information, and then send the third information and the fourth information through the first CSI reporting setting and the second CSI reporting setting respectively, that is, this application does not limit the order of sending the third information and the fourth information, and they may be sent simultaneously or separately. Alternatively, the terminal device may first determine the fourth information, and then send the fourth information according to the second CSI reporting setting, and then determine the third information, and send the third information according to the first CSI reporting setting, etc. This application does not limit this.

[0369] Based on the above solution, by increasing the number of CSI reporting settings (e.g., CSI-ReportConfig), or by introducing a CSI reporting setting dedicated to SBFD (e.g., CSI-ReportConfig-SBFD), the flexibility of CSI reporting in SBFD scenarios is improved. In addition, by introducing the first sub-CSI-RS resource and the second sub-CSI-RS resource (e.g., NZP-CSI-RS-SubResource), without increasing the number of CSI resources (e.g., NZP-CSI-RS-Resource), CSI-RS can be sent and CSI measurements can be performed on SBFD time units and non-SBFD time units, thereby improving the flexibility of CSI measurements in SBFD scenarios.

[0370] Figure 5 is a flow chart of a communication method provided by an embodiment of the present application. As shown in Figure 5, the method includes the following steps.

[0371] S510, the network device sends first information to the terminal device, and correspondingly, the terminal device receives the first information from the network device.

[0372] The first information indicates a CSI reporting setting (protocol name: CSI Reporting Setting, high-layer signaling: CSI-ReportConfig), the CSI reporting setting includes a first sub-CSI reporting setting and a second sub-CSI reporting setting, the first sub-CSI reporting setting is used to report third information, the second sub-reporting setting is used to report fourth information, the third information includes CSI on SBFD time units, and the fourth information includes CSI on non-SBFD time units. Exemplarily, the third information and the fourth information may be CSI.

[0373] That is, the first sub-CSI reporting setting is used to report CSI obtained by performing CSI measurement on SBFD time units, and the second sub-CSI reporting setting is used to report CSI obtained by performing CSI measurement on non-SBFD time units.

[0374] For detailed descriptions of the SBFD time unit and the non-SBFD time unit, please refer to the above and will not be repeated here.

[0375] Below, an example is given to illustrate a specific implementation method of the first information indicating the CSI reporting setting.

[0376] Option 1:

[0377] In one implementation, the first sub-CSI reporting setting includes first indication information, and the second sub-CSI reporting setting includes second indication information. The first indication information indicates that the first measurement result is reported through the resources indicated by the first sub-CSI reporting setting, and the first measurement result includes a result measured on the first CSI-RS resource. The second indication information indicates that the second measurement result is reported through the resources indicated by the second sub-CSI reporting setting, and the second measurement result includes a result measured on the second CSI-RS resource.

[0378] That is, the first sub-CSI reporting setting may be associated only with the first CSI-RS resource, and the second sub-CSI reporting setting may be associated only with the second CSI-RS resource.

[0379] Optionally, the first information indicates one or more pairs of sub-CSI reporting settings (e.g., a first sub-CSI reporting setting and a second sub-CSI reporting setting). Each pair of sub-CSI reporting settings may be associated with the same CSI resource setting, and different pairs of sub-CSI reporting settings may be associated with different CSI resource settings. For example, the first sub-CSI reporting setting and the second sub-CSI reporting setting are associated with the same CSI resource setting, i.e., the CSI resources indicated by the CSI resource setting include the first CSI-RS resource and the second CSI-RS resource.

[0380] Exemplarily, the first indication information and the second indication information may be 1 bit in size. For example, the first indication information may be a first value of "0" and the second indication information may be a second value of "1." Assuming that the first sub-CSI reporting setting and the second sub-CSI reporting setting are associated with CSI resource setting #1, and CSI resource setting #1 includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource includes an SBFD time unit, and the second CSI-RS resource includes a non-SBFD time unit, then "0" may indicate that the first sub-CSI reporting setting is associated with the first CSI-RS resource including the SBFD time unit, and "1" may indicate that the second sub-CSI reporting setting is associated with the second CSI-RS resource including the non-SBFD time unit. For another example, the first indication information may be a first value of "1" and the second indication information may be a second value of "0." In this case, "1" may indicate that the first sub-CSI reporting setting is associated with the first CSI-RS resource including the SBFD time unit, and "0" may indicate that the second sub-CSI reporting setting is associated with the second CSI-RS resource including the non-SBFD time unit. That is, the first sub-CSI reporting setting is used to report CSI obtained by performing CSI measurement on SBFD time units, and the second sub-CSI reporting setting is used to report CSI obtained by performing CSI measurement on non-SBFD time units.

[0381] Exemplarily, the first indication information includes an identifier of a first CSI-RS resource, and the second indication information includes an identifier of a second CSI-RS resource. Therefore, the terminal device can determine the first CSI-RS resource based on the identifier of the first CSI-RS resource included in the first sub-CSI reporting setting, and then determine that the first sub-CSI reporting setting is used to report the result obtained by measuring on the first CSI-RS resource, and the terminal device can determine the second CSI-RS resource based on the identifier of the second CSI-RS resource included in the second sub-CSI reporting setting, and then determine that the second sub-CSI reporting setting is used to report the result obtained by measuring on the second CSI-RS resource. That is, the first sub-CSI reporting setting is used to report the CSI obtained by performing CSI measurement on the first CSI-RS resource, and the second sub-CSI reporting setting is used to report the CSI obtained by performing CSI measurement on the second CSI-RS resource.

[0382] Exemplarily, the first sub-CSI reporting setting includes one or more of the following:

[0383] (1) The identifier of the first sub-CSI reporting configuration (high-layer signaling: csi-ReportSubConfigID), which is used to identify the first sub-CSI reporting configuration;

[0384] (2) First CSI-RS port subset indicator parameter (high-layer signaling: port-subsetIndicator);

[0385] (3) a fifth power offset (high-layer signaling: powerOffset), which is used to determine the power of the first CSI-RS resource. Optionally, the terminal device determines the power of the first CSI-RS resource based on the fifth power offset, the first power control offset (powerControlOffset), and the power on the PDSCH resource;

[0386] (4) First codebook configuration parameter (high-layer signaling: codebookType), the first codebook configuration parameter is used to determine the third information (such as CSI).

[0387] Exemplarily, the second sub-CSI reporting setting includes one or more of the following:

[0388] (1) The identifier of the second sub-CSI reporting configuration (high-layer signaling: csi-ReportSubConfigID), which is used to identify the second sub-CSI reporting configuration;

[0389] (2) Second CSI-RS port subset indicator parameter (high-layer signaling: port-subsetIndicator);

[0390] (3) a sixth power offset (high-layer signaling: powerOffset), which is used to determine the power of the second CSI-RS resource. Optionally, the terminal device determines the power of the second CSI-RS resource based on the sixth power offset, the third power control offset (powerControlOffset), and the power on the SSS resource;

[0391] (4) Second codebook configuration parameter (high-layer signaling: codebookType), the second codebook configuration parameter is used to determine the fourth information (such as CSI).

[0392] Option 2:

[0393] In one implementation, the first sub-CSI reporting setting is a sub-CSI reporting setting dedicated to SBFD, and the second sub-CSI reporting setting is a sub-CSI reporting setting not dedicated to SBFD. That is, the first information in this implementation may indicate two types of sub-CSI reporting settings, for example, a first type of sub-CSI reporting setting (i.e., a sub-CSI reporting setting dedicated to SBFD) and a second type of sub-CSI reporting setting (i.e., a sub-CSI reporting setting not dedicated to SBFD).

[0394] Optionally, the SBFD-specific sub-CSI reporting setting is used to report CSI measured in SBFD time units, and the non-SBFD-specific sub-CSI reporting setting is used to report CSI measured in non-SBFD time units.

[0395] Optionally, the first-type sub-CSI reporting setting is associated only with the first-type CSI-RS resources in the following step S520, and the second-type sub-CSI reporting setting is associated only with the second-type CSI-RS resources in the following step S520. In other words, the SBFD-specific sub-CSI reporting setting is associated only with the SBFD-specific CSI-RS resources, and the non-SBFD-specific sub-CSI reporting setting is associated only with the non-SBFD-specific CSI-RS resources. Therefore, the SBFD-specific sub-CSI reporting setting is used to report the CSI measured on the SBFD-specific CSI-RS resources, and the non-SBFD-specific sub-CSI reporting setting is used to report the CSI measured on the non-SBFD-specific CSI-RS resources.

[0396] It should be noted that the names of the above-mentioned first type of sub-CSI reporting settings (or, SBFD-specific sub-CSI reporting settings) and the second type of sub-CSI reporting settings (or, non-SBFD-specific sub-CSI reporting settings) are only examples given for ease of understanding, and this application does not limit them. It should be understood that they can be distinguished by different high-layer signaling names. For example, high-layer signaling CSI-ReportSubConfig-SBFD and CSI-ReportSubConfig can be used to indicate the SBFD-specific sub-CSI reporting settings and the non-SBFD-specific sub-CSI reporting settings, respectively, so as to distinguish them from the names of the CSI reporting settings (such as CSI-ReportConfig, csi-ReportConfigId) in the prior art. Optionally, the ID is reallocated for the SBFD-specific sub-CSI reporting setting (such as csi-ReportSubConfigId-SBFD)

[0397] Exemplarily, the first type of sub-CSI reporting setting includes one or more of the following: a first sub-CSI reporting setting identifier, a first CSI-RS port subset indication parameter, a fifth power offset, and a first codebook configuration parameter. The second type of sub-CSI reporting setting includes one or more of the following: a second sub-CSI reporting setting identifier, a second CSI-RS port subset indication parameter, a sixth power offset, and a second codebook configuration parameter. For specific explanations, please refer to the relevant description in the above solution 1.

[0398] Optionally, before receiving the first information and before receiving the second information, the method further includes: the terminal device sends third capability information to the network device, the third capability information indicating that the terminal device supports the SBFD-specific sub-CSI reporting setting configured by the network.

[0399] Optionally, the third capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0400] Optionally, the second information may further indicate N2 SBFD-specific sub-CSI reporting settings and N3 non-SBFD-specific sub-CSI reporting settings, where N2 ≤ 4, N3 ≤ 4, and N2 + N3 ≤ 8, and N2 and N3 are positive integers. It should be understood that the number of SBFD-specific sub-CSI reporting settings and non-SBFD-specific sub-CSI reporting settings is less than or equal to 4, maintaining consistency with the number of CSI reporting settings in existing solutions, minimizing changes to the standard, and implicitly increasing the total number of CSI reporting settings by adding SBFD-specific sub-CSI reporting settings.

[0401] S520, the network device sends second information to the terminal device, and correspondingly, the terminal device receives the second information from the network device.

[0402] The second information indicates a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is used to receive a first signal, the second CSI-RS resource is used to receive a second signal, the first signal is used to determine the third information, and the second signal is used to determine the fourth information.

[0403] Optionally, the first CSI-RS resource and the second CSI-RS resource are included in a CSI resource setting (protocol name: CSI Resource Setting, higher layer signaling: CSI-ResourceConfig). For example, the second information indicates a CSI resource setting, and the CSI resource setting includes the first CSI-RS resource and the second CSI-RS resource.

[0404] Optionally, the present application does not specifically limit the number of first CSI-RS resources and second CSI-RS resources included in the CSI resource setting. For example, the number of first CSI-RS resources or second CSI-RS resources can be one or more.

[0405] Below, a specific implementation manner in which the second information indicates the first CSI-RS resource and the second CSI-RS resource is described with examples.

[0406] Option 1:

[0407] In one implementation, the first CSI-RS resource indicates a first time domain resource, the second CSI-RS resource indicates a second time domain resource, the first time domain resource includes an SBFD time unit, and the second time domain resource includes a non-SBFD time unit.

[0408] Optionally, the first CSI-RS resource is a CSI-RS resource allocated only on SBFD time units, and the second CSI-RS resource is a CSI-RS resource allocated only on non-SBFD time units. In other words, the terminal device does not expect the first CSI-RS resource or the second CSI-RS resource included in a CSI resource setting to be allocated on both SBFD time units and non-SBFD time units.

[0409] Optionally, the first time domain resource includes only SBFD time units, and the second time domain resource includes only non-SBFD time units. In other words, the first time domain resource does not include non-SBFD time units, and the second time domain resource does not include SBFD time units. Therefore, the first CSI-RS resource is only used for CSI measurement on SBFD time units, and the second CSI-RS resource is only used for CSI measurement on non-SBFD time units. That is, the first CSI-RS resource can indicate the parameters used for CSI-RS transmission / reception and CSI measurement on SBFD time units, and the second CSI-RS resource can indicate the parameters used for CSI-RS transmission / reception and CSI measurement on non-SBFD time units. It should be noted that this optional method has no standard impact, and the relevant limitations of the above-mentioned first CSI-RS resource and the second CSI-RS resource can be implemented by network device configuration.

[0410] Optionally, in the SBFD time unit in the first time domain resource, the terminal device determines the third information based on the first CSI-RS resource and the first signal; and / or, in the non-SBFD time unit in the second time domain resource, the terminal device determines the fourth information based on the second CSI-RS resource and the second signal.

[0411] Optionally, the present application does not limit the size of the number of ports of the first CSI-RS resource and the number of ports of the second CSI-RS resource, or whether the CDM type of the first CSI-RS resource and the CDM type of the second CSI-RS resource are the same.

[0412] In the first example, the number of ports of the first CSI-RS resource is the same as the number of ports of the second CSI-RS resource, and the CDM type of the first CSI-RS resource is the same as the CDM type of the second CSI-RS resource.

[0413] Exemplarily, the first sub-CSI reporting configuration includes fifth information, where the fifth information indicates the first port or the first CDM group. For example, the terminal device receiving the first signal according to the first CSI-RS resource includes: the terminal device receiving the first signal according to the first port and the first CSI-RS resource; or the terminal device receiving the first signal according to the first CDM group and the first CSI-RS resource.

[0414] Exemplarily, the second sub-CSI reporting configuration includes sixth information, where the sixth information indicates a second port or a second CDM group. For example, the terminal device receiving the second signal according to the second CSI-RS resource includes: the terminal device receiving the second signal according to the second port and the second CSI-RS resource; or the terminal device receiving the second signal according to the second CDM group and the second CSI-RS resource.

[0415] In the second example, the number of ports of the first CSI-RS resource is different from the number of ports of the second CSI-RS resource, and the CDM type of the first CSI-RS resource is different from the CDM type of the second CSI-RS resource.

[0416] Exemplarily, the first sub-CSI reporting setting includes an identifier of a first CSI-RS resource, the second sub-CSI reporting setting includes an identifier of a second CSI-RS resource, the identifier of the first CSI-RS resource indicates the first CSI-RS resource, and the identifier of the second CSI-RS resource indicates the second CSI-RS resource.

[0417] Option 2:

[0418] In one implementation, the first CSI-RS resource is a CSI-RS resource dedicated to SBFD, and the second CSI-RS resource is a CSI-RS resource not dedicated to SBFD. That is, the second information in this implementation may indicate all CSI-RS resources in a CSI resource setting, where each CSI-RS resource includes two types of CSI-RS resources, such as a first type of CSI-RS resource (i.e., a CSI-RS resource dedicated to SBFD) and a second type of CSI-RS resource (i.e., a CSI-RS resource not dedicated to SBFD).

[0419] Optionally, SBFD-dedicated CSI-RS resources are CSI-RS resources allocated only in SBFD time units, and non-SBFD-dedicated CSI-RS resources are CSI-RS resources allocated only in non-SBFD time units. In other words, the terminal device does not expect any first-class CSI-RS resources to be allocated in non-SBFD time units, and the terminal device does not expect any second-class CSI-RS resources to be allocated in SBFD time units.

[0420] Optionally, the SBFD-dedicated CSI-RS resources may indicate the parameters used for CSI-RS transmission / reception and CSI measurement on the SBFD time unit, and the non-SBFD-dedicated CSI-RS resources may indicate the parameters used for CSI-RS transmission / reception and CSI measurement on the non-SBFD time unit.

[0421] Optionally, in the SBFD time unit, the terminal device determines the third information based on the first signal and the CSI-RS resources dedicated to SBFD; and / or, in the non-SBFD time unit, the terminal device determines the fourth information based on the second signal and the CSI-RS resources dedicated to non-SBFD.

[0422] In the first example, the number of ports of the first type of CSI-RS resources is the same as the number of ports of the second type of CSI-RS resources, and the CDM type of the first type of CSI-RS resources is the same as the CDM type of the second type of CSI-RS resources.

[0423] Exemplarily, the first sub-CSI reporting configuration includes fifth information, where the fifth information indicates the first port or the first CDM group. For example, the terminal device receives the first signal based on the first port and the first type of CSI-RS resource; or the terminal device receives the first signal based on the first CDM group and the first type of CSI-RS resource.

[0424] Exemplarily, the second sub-CSI reporting configuration includes sixth information, where the sixth information indicates a second port or a second CDM group. For example, the terminal device receives the second signal based on the second port and the second type of CSI-RS resource; or the terminal device receives the second signal based on the second CDM group and the second type of CSI-RS resource.

[0425] In the second example, the number of ports of the first type of CSI-RS resources is different from the number of ports of the second type of CSI-RS resources, and the CDM type of the first type of CSI-RS resources is different from the CDM type of the second type of CSI-RS resources.

[0426] Exemplarily, the first sub-CSI reporting setting includes an identifier of a first type of CSI-RS resource, the second sub-CSI reporting setting includes an identifier of a second type of CSI-RS resource, the identifier of the first type of CSI-RS resource indicates the first type of CSI-RS resource, and the identifier of the second type of CSI-RS resource indicates the second CSI-RS resource.

[0427] It should be noted that the names of the above-mentioned first type of CSI-RS resources (or, CSI-RS resources dedicated to SBFD) and the second type of CSI-RS resources (or, CSI-RS resources dedicated to non-SBFD) are only examples given for ease of understanding, and this application does not limit them. It should be understood that they can be distinguished by different high-layer signaling names. For example, high-layer signaling nzp-CSI-RS-Resource-SBFD and nzp-CSI-RS-Resource can be used to indicate the CSI-RS resources dedicated to SBFD and the CSI-RS resources dedicated to non-SBFD, respectively, and the ID of the CSI-RS resources dedicated to SBFD can be reallocated (for example, nzp-CSI-RS-ResourceId-SBFD) to distinguish them from the CSI-RS resources (nzp-CSI-RS-Resource, nzp-CSI-RS-ResourceId) in the prior art.

[0428] Optionally, before executing the above steps S510 and S520, that is, before the terminal device receives the first information and before receiving the second information, the method also includes: the terminal device sends first capability information to the network device, and the first capability information indicates that the terminal device supports the SBFD dedicated CSI-RS resources configured by the network.

[0429] Optionally, the first capability information is carried in a first signaling, the first signaling is an RRC signaling, and the first signaling is carried on a PUSCH.

[0430] Optionally, the first capability information and the third capability information involved above may be sent via fourth capability information. For example, before receiving the first information and before receiving the second information, the method further includes: the terminal device sending fourth capability information to the network device, the fourth capability information indicating that the terminal device supports the SBFD-specific CSI-RS resources and SBFD-specific sub-CSI reporting settings configured by the network device.

[0431] Optionally, the fourth capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0432] Optionally, this application does not limit the order of execution of the above steps S510 and S520. For example, the network device may first send the first information to the terminal device, and then send the second information; or, the network device may first send the second information to the terminal device, and then send the first information; or, the network device may send the first information and the second information to the terminal device at the same time. Optionally, when the network device sends the first information and the second information to the terminal device at the same time, the first information and the second information may be sent through the same signaling (such as RRC, DCI signaling), or carried in the same data packet; or, the first information and the second information may also be sent through two signalings, or carried in two data packets, and this application does not limit this.

[0433] S530: The network device sends a first signal to the terminal device. Correspondingly, the terminal device receives the first signal from the terminal device.

[0434] S540: The network device sends a second signal to the terminal device. Correspondingly, the terminal device receives the second signal from the terminal device.

[0435] Exemplarily, both the first signal and the second signal are CSI-RS. In this implementation, the first signal is a CSI-RS allocated on an SBFD time unit, and the second signal is a CSI-RS allocated on a non-SBFD time unit. For example, a network device sends a first signal on a first CSI-RS resource, and correspondingly, a terminal device receives the first signal on the first CSI-RS resource; a network device sends a second signal on a second CSI-RS resource, and correspondingly, a terminal device receives the second signal on the second CSI-RS resource.

[0436] It should be understood that the CSI-RS in the embodiment of the present application cannot be sent on the uplink time unit.

[0437] In one implementation, during an SBFD time unit in a first time domain resource, the network device sends a first signal to a terminal device based on a first CSI-RS resource, and correspondingly, the terminal device receives the first signal from the network device based on the first CSI-RS resource. During a non-SBFD time unit in a second time domain resource, the network device sends a second signal to the terminal device based on a second CSI-RS resource, and correspondingly, the terminal device receives the second signal from the network device based on the second CSI-RS resource.

[0438] That is, the network device sends CSI on the SBFD time unit in the first time domain resource and the non-SBFD time unit in the second time domain resource. Correspondingly, the terminal device receives CSI on the SBFD time unit in the first time domain resource and the non-SBFD time unit in the second time domain resource.

[0439] S550: The terminal device determines third information according to the first signal.

[0440] Exemplarily, the first signal may be a CSI-RS, and the third information may be a CSI.

[0441] Optionally, the third information may be CSI on a SBFD time unit, which may be understood as: the terminal device measures CSI-RS on a SBFD time unit to obtain the third information.

[0442] Exemplarily, the third information may be determined according to the first signal (first part) of the first (type) CSI-RS resource indication associated with the first (type) sub-CSI reporting setting.

[0443] Exemplarily, the terminal device receives a first signal (first part) on a first (type of) CSI-RS resource, and measures the received first signal according to information contained in the first (type of) CSI-RS resource to obtain third information.

[0444] S560: The terminal device determines fourth information according to the second signal.

[0445] Exemplarily, the second signal may be a CSI-RS, and the fourth information may be a CSI.

[0446] Optionally, the fourth information may be CSI on a non-SBFD time unit, which may be understood as: the terminal device measures the CSI-RS on a non-SBFD time unit to obtain the fourth information.

[0447] Exemplarily, the fourth information may be determined according to the first signal (second part) of the second (type) CSI-RS resource indication associated with the second (type) sub-CSI reporting setting.

[0448] Exemplarily, the terminal device receives the first signal (second part) on the second (type) CSI-RS resource, and measures the received second signal according to the information contained in the second (type) CSI-RS resource to obtain the fourth information.

[0449] It should be understood that in the above steps S550 and S560, the third information (such as CSI) on the SBFD time unit and the fourth information (such as CSI) on the non-SBFD time unit are measured separately. This is because two different CSI-RS resources (for example, the first CSI-RS resource and the second CSI-RS resource) are used.

[0450] Optionally, this application does not limit the order in which steps S550 and S560 are executed. In other words, this application does not specifically limit the order in which the third information and the fourth information are determined. For example, the terminal device may first determine the third information and then the fourth information; alternatively, the terminal device may first determine the fourth information and then the third information. This application does not limit this, as long as the third and fourth information are transmitted through a single CSI reporting configuration.

[0451] S570, the terminal device sends the third information and the fourth information to the network device according to the CSI reporting setting. Correspondingly, the network device receives the third information and the fourth information from the terminal device according to the CSI reporting setting.

[0452] The third information and the fourth information may be carried on the first PUCCH or the first PUSCH. Optionally, the first PUCCH or the first PUSCH may be considered as a PUCCH or a PUSCH.

[0453] Optionally, the fourth information may be carried on a fourth signal, where the fourth signal is determined according to the second (type) CSI reporting setting.

[0454] It should be understood that the CSI on the SBFD time unit and the CSI on the non-SBFD time unit are reported simultaneously, that is, carried on the same PUSCH or PUCCH, because one CSI reporting setting is used.

[0455] Based on the above solution, by increasing the number of CSI reporting settings (such as CSI-ReportSubConfig), or by introducing a CSI sub-reporting setting dedicated to SBFD (such as CSI-ReportSubConfig-SBFD), the first sub-CSI reporting setting and the second sub-CSI reporting setting are respectively associated with the first CSI-RS resource and the second CSI-RS resource, thereby saving unnecessary signaling overhead. At the same time, without increasing the number of CSI reporting settings (such as CSI-ReportConfig), CSI measurement in scenarios with different numbers of antenna ports is realized, and the CSI measured on the SBFD time unit and the non-SBFD time unit is sent simultaneously to improve the flexibility of CSI reporting in the SBFD scenario.

[0456] Figure 6 is a flow chart of a communication method provided in an embodiment of the present application. As shown in Figure 6, the method includes the following steps.

[0457] S610, the network device sends first information to the terminal device, and correspondingly, the terminal device receives the first information from the network device.

[0458] The first information indicates a CSI reporting setting (protocol name: CSI Reporting Setting, high-layer signaling: CSI-ReportConfig), and for a specific interpretation, please refer to the relevant description of step S510 of the above method 500.

[0459] Below, an example is given to illustrate a specific implementation method of the first information indicating the CSI reporting setting.

[0460] Option 1:

[0461] In one implementation, the first sub-CSI reporting setting includes first indication information, and the second sub-CSI reporting setting includes second indication information. The first indication information indicates that the first measurement result is reported through the resources indicated by the first sub-CSI reporting setting, and the first measurement result includes the result measured on the first sub-CSI-RS resource. The second indication information indicates that the second measurement result is reported through the resources indicated by the second sub-CSI reporting setting, and the second measurement result includes the result measured on the second sub-CSI-RS resource. For the specific implementation method, please refer to the relevant description of step S510 of the above method 500 and will not be described again here.

[0462] The parameters and their interpretations included in the first sub-CSI reporting setting and the second sub-CSI reporting setting may refer to the relevant description of step S510 of the above method 500.

[0463] Option 2:

[0464] In one implementation, the first sub-CSI reporting setting is a sub-CSI reporting setting dedicated to SBFD, and the second sub-CSI reporting setting is a sub-CSI reporting setting not dedicated to SBFD. That is, the first information in this implementation may indicate two types of sub-CSI reporting settings, such as a first type of sub-CSI reporting setting (i.e., a sub-CSI reporting setting dedicated to SBFD) and a second type of sub-CSI reporting setting (i.e., a sub-CSI reporting setting not dedicated to SBFD). For the specific implementation, reference may be made to the description of step S510 of the above method 500 and will not be further described here.

[0465] The parameters and their interpretations included in the first-type sub-CSI reporting settings and the second-type sub-CSI reporting settings may refer to the relevant description of step S510 of the above method 500.

[0466] Optionally, before receiving the first information and before receiving the second information, the method further includes: the terminal device sends third capability information to the network device, the third capability information indicating that the terminal device supports the SBFD-specific sub-CSI reporting setting configured by the network.

[0467] Optionally, the third capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0468] Optionally, the second information may further indicate N2 SBFD-dedicated sub-CSI reporting settings and N3 non-SBFD-dedicated sub-CSI reporting settings, optionally, N2≤4, N3≤4, N2+N3≤8, and N2 and N3 are positive integers.

[0469] S620, the network device sends second information to the terminal device, and correspondingly, the terminal device receives the second information from the network device.

[0470] The second information indicates CSI-RS resources, and for a specific explanation, please refer to the relevant description of step S420 of the above method 400.

[0471] The following is an example of a specific implementation manner in which the second information indicates the CSI-RS resource.

[0472] Option 1:

[0473] In one implementation, the CSI-RS resource also includes a first period and an offset parameter, which indicate a first time domain resource. That is, the second information in this implementation may indicate all CSI-RS resources in the CSI resource setting, wherein each CSI-RS resource includes a first period and an offset parameter, and two sub-CSI-RS resources (e.g., a first sub-CSI-RS resource and a second sub-CSI-RS resource). For the specific implementation, reference may be made to the relevant description of step S420 of the above method 400 and will not be described again here.

[0474] The parameters included in the first sub-CSI-RS resource and the second sub-CSI-RS resource and their interpretations may refer to the relevant description of step S420 of the above method 400.

[0475] Option 2:

[0476] In one implementation, the first sub-CSI-RS resource includes a second periodicity and an offset parameter, which indicate a second time domain resource. The second sub-CSI-RS resource includes a third periodicity and an offset parameter, which indicate a third time domain resource. That is, the second information in this implementation may indicate all CSI-RS resources in the CSI resource setting, where each CSI-RS resource includes two sub-CSI-RS resources, such as a first sub-CSI-RS resource and a second sub-CSI-RS resource. For a specific implementation, reference may be made to the description of step S420 of method 400 above and will not be further described here.

[0477] The parameters and their interpretations further included in the first sub-CSI-RS resource and the second sub-CSI-RS resource may refer to the relevant description of step S420 of the above method 400 .

[0478] Option 3:

[0479] The first sub-CSI-RS resource is a sub-CSI-RS resource dedicated to SBFD, and the second sub-CSI-RS resource is a sub-CSI-RS resource not dedicated to SBFD. That is, the second information in this implementation can indicate all CSI-RS resources in the CSI resource setting, where each CSI-RS resource includes two types of sub-CSI-RS resources, such as a first type of sub-CSI-RS resource (i.e., a sub-CSI-RS resource dedicated to SBFD) and a second type of sub-CSI-RS resource (i.e., a sub-CSI-RS resource not dedicated to SBFD). The specific implementation method can refer to the relevant description of step S420 of the above method 400 and will not be explained here.

[0480] The parameters and their interpretations further included in the first type of sub-CSI-RS resources and the second type of sub-CSI-RS resources may refer to the relevant description of step S420 of the above method 400.

[0481] Optionally, the present application does not limit the size of the number of ports of the first sub-CSI-RS resource and the number of ports of the second sub-CSI-RS resource, or whether the CDM type of the first sub-CSI-RS resource and the CDM type of the second sub-CSI-RS resource are the same.

[0482] In a first implementation manner, the number of ports of the first sub-CSI-RS resource is the same as the number of ports of the second sub-CSI-RS resource, and the CDM type of the first sub-CSI-RS resource is the same as the CDM type of the second sub-CSI-RS resource.

[0483] In a second implementation, the number of ports of the first sub-CSI-RS resource is different from the number of ports of the second sub-CSI-RS resource, and the CDM type of the first sub-CSI-RS resource is different from the CDM type of the second sub-CSI-RS resource.

[0484] Exemplarily, the first sub-CSI reporting setting includes an identifier of a first sub-CSI-RS resource, the second sub-CSI reporting setting includes an identifier of a second sub-CSI-RS resource, the identifier of the first sub-CSI-RS resource indicates the first sub-CSI-RS resource, and the identifier of the second sub-CSI-RS resource indicates the second sub-CSI-RS resource.

[0485] Optionally, before executing the above steps S610 and S620, that is, before the terminal device receives the first information and before receiving the second information, the method also includes: the terminal device sends first capability information to the network device, and the first capability information indicates that the terminal device supports the SBFD dedicated sub-CSI-RS resources configured by the network.

[0486] Optionally, the first capability information is carried in a first signaling, the first signaling is an RRC signaling, and the first signaling is carried on a PUSCH.

[0487] Optionally, the first capability information and the third capability information involved above may be sent via fourth capability information. For example, before receiving the first information and before receiving the second information, the method further includes: the terminal device sending fourth capability information to the network device, where the fourth capability information indicates that the terminal device supports SBFD-specific sub-CSI-RS resources and SBFD-specific sub-CSI reporting settings configured by the network device.

[0488] Optionally, the fourth capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0489] Optionally, this application does not limit the execution order of the above steps S610 and S620. For specific implementation, please refer to the above related description.

[0490] S630: The network device sends a first signal to the terminal device. Correspondingly, the terminal device receives the first signal from the network device.

[0491] Exemplarily, the network device sends a first signal on the first sub-CSI-RS resource, and correspondingly, the terminal device receives the first signal on the first sub-CSI-RS resource; the network device sends a first signal on the second sub-CSI-RS resource, and correspondingly, the terminal device receives the first signal on the second sub-CSI-RS resource.

[0492] Optionally, the first sub-CSI reporting configuration further includes fifth information, where the fifth information indicates the first port or the first CDM group. For example, the network device receives the first signal based on the first port and the first sub-CSI-RS resource; or the network device receives the first signal based on the first CDM group and the first sub-CSI-RS resource.

[0493] Optionally, the second sub-CSI reporting configuration further includes sixth information, where the sixth information indicates the second port or the second CDM group. For example, the network device receives the first signal based on the second port and the second sub-CSI-RS resource; or the network device receives the first signal based on the second CDM group and the second sub-CSI-RS resource.

[0494] S640: The terminal device determines third information based on the first signal and the first sub-CSI-RS resource.

[0495] In one example, the first sub-CSI reporting configuration further includes seventh information, where the seventh information indicates the first port or the first CDM group. For example, the network device determining the third information based on the first signal and the first sub-CSI-RS resource includes: the network device determining the third information based on the first signal, the first sub-CSI-RS resource, and the first port; or the network device determining the third information based on the first signal, the first sub-CSI-RS resource, and the first CDM group.

[0496] S650: The terminal device determines fourth information according to the first signal and the second sub-CSI-RS resource.

[0497] In one example, the second sub-CSI reporting setting further includes eighth information, where the eighth information indicates the second port or the second CDM group. For example, the network device determining the fourth information based on the first signal and the second sub-CSI-RS resource includes: the network device determining the fourth information based on the first signal, the second sub-CSI-RS resource, and the second port; or the network device determining the fourth information based on the first signal, the second sub-CSI-RS resource, and the second CDM group.

[0498] The specific implementation of the above steps S630-S650 can refer to the relevant description of steps S430-S440 and S460 of the above method 400, which will not be explained here.

[0499] S660, the terminal device sends the third information and the fourth information to the network device according to the CSI reporting setting. Correspondingly, the network device receives the third information and the fourth information from the terminal device according to the CSI reporting setting.

[0500] The specific implementation method can refer to the relevant description of step S570 of the above method 500, which will not be explained here.

[0501] Based on the above scheme, by introducing the first sub-CSI-RS resource and the second sub-CSI-RS resource (such as NZP-CSI-RS-SubResource), without increasing the number of CSI resources (such as NZP-CSI-RS-Resource), it is possible to send CSI-RS and perform CSI measurement on SBFD time units and non-SBFD time units, so as to improve the flexibility of CSI measurement in SBFD scenarios. In addition, by increasing the number of CSI reporting settings (such as CSI-ReportSubConfig), or by introducing a CSI sub-reporting setting dedicated to SBFD (such as CSI-ReportSubConfig-SBFD), the first sub-CSI reporting setting and the second sub-CSI reporting setting are respectively associated with the first sub-CSI-RS resource and the second sub-CSI-RS resource, thereby saving unnecessary signaling overhead. At the same time, without increasing the number of CSI reporting settings (such as CSI-ReportConfig), CSI measurement in scenarios with different numbers of antenna ports is realized, and the CSI measured in SBFD time units and non-SBFD time units is reported at the same time, so as to improve the flexibility of CSI reporting in SBFD scenarios.

[0502] Figure 7 is a flow chart of a communication method provided in an embodiment of the present application. As shown in Figure 7, the method includes the following steps.

[0503] S710, the network device sends first information to the terminal device, and correspondingly, the terminal device receives the first information from the network device.

[0504] The first information indicates a CSI reporting setting (protocol name: CSI Reporting Setting, high-layer signaling: CSI-ReportConfig), and for a specific interpretation, please refer to the relevant description of step S610 of the above method 600.

[0505] Optionally, before receiving the first information and before receiving the second information, the method further includes: the terminal device sends third capability information to the network device, the third capability information indicating that the terminal device supports the SBFD-specific sub-CSI reporting setting configured by the network.

[0506] Optionally, the third capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0507] Optionally, the second information may further indicate N2 SBFD-dedicated sub-CSI reporting settings and N3 non-SBFD-dedicated sub-CSI reporting settings, optionally, N2≤4, N3≤4, N2+N3≤8, and N2 and N3 are positive integers.

[0508] S720, the network device sends second information to the terminal device, and correspondingly, the terminal device receives the second information from the network device.

[0509] The second information indicates a CSI-RS resource, the CSI-RS resource is used to receive the first signal, and the first signal is used to determine the third information and the fourth information.

[0510] Optionally, the CSI-RS resource is included in a CSI resource setting (protocol name: CSI Resource Setting, higher layer signaling: CSI-ResourceConfig). Optionally, the second information indicates the CSI resource setting, where the CSI resource setting indicates the CSI-RS resource.

[0511] The following is an example of a specific implementation manner in which the second information indicates the CSI-RS resource.

[0512] Option 1:

[0513] In one implementation, the CSI resource includes a first period and an offset parameter, and the first period and the offset parameter indicate a first time domain resource. That is, the second information in this implementation may indicate all CSI-RS resources in the CSI resource setting, wherein each CSI-RS resource includes a first period and an offset parameter. For the specific implementation, reference may be made to the relevant description of step S420 of the above method 400 and will not be described again here.

[0514] Optionally, before executing the above steps S710 and S720, that is, before the terminal device receives the first information and before receiving the second information, the method also includes: the terminal device sends first capability information to the network device, and the first capability information indicates that the terminal device supports the CSI-RS resources configured by the network.

[0515] Optionally, the first capability information is carried in a first signaling, the first signaling is an RRC signaling, and the first signaling is carried on a PUSCH.

[0516] Optionally, the first capability information and the third capability information involved above may be sent via fourth capability information. For example, before receiving the first information and before receiving the second information, the method further includes: the terminal device sending fourth capability information to the network device, where the fourth capability information indicates that the terminal device supports SBFD-specific sub-CSI-RS resources and SBFD-specific sub-CSI reporting settings configured by the network device.

[0517] Optionally, the fourth capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0518] Optionally, this application does not limit the execution order of the above steps S710 and S720. For specific implementation, please refer to the above related description.

[0519] S730: The network device sends a first signal to the terminal device. Correspondingly, the terminal device receives the first signal from the network device.

[0520] Exemplarily, the network device sends a first signal on the CSI-RS resource, and correspondingly, the terminal device receives the first signal on the CSI-RS resource.

[0521] In one example, the first sub-CSI reporting setting further includes fifth information, where the fifth information indicates the first port or the first CDM group. For example, the network device sends a first signal to the terminal device based on the first port and the CSI-RS resource, and correspondingly, the terminal device receives the first signal from the network device based on the first port and the CSI-RS resource; or the network device sends a first signal to the terminal device based on the first CDM group and the CSI-RS resource, and correspondingly, the terminal device receives the first signal from the network device based on the first CDM group and the CSI-RS resource.

[0522] In one example, the second sub-CSI reporting setting further includes seventh information, where the seventh information indicates the second port or the second CDM group. For example, the following may occur: the network device sends a first signal to the terminal device according to the second port and the CSI-RS resource, and the terminal device receives the first signal from the network device according to the second port and the CSI-RS resource; or the network device sends a first signal to the terminal device according to the second CDM group and the CSI-RS resource, and the terminal device receives the first signal from the network device according to the second CDM group and the CSI-RS resource.

[0523] S740: The terminal device determines third information and fourth information according to the first signal.

[0524] Optionally, in the SBFD time unit in the first time domain resource, the terminal device determines the third information based on the first signal and the CSI-RS resource; and / or, in the non-SBFD time unit in the first time domain resource, the terminal device determines the fourth information based on the first signal and the CSI-RS resource.

[0525] In one example, the first sub-CSI reporting configuration further includes sixth information, where the sixth information indicates the first port or the first CDM group. For example, the network device determining the third information based on the first signal includes: the network device determining the third information based on the first signal, the CSI-RS resource, and the first port; or the network device determining the third information based on the first signal, the CSI-RS resource, and the first CDM group.

[0526] In one example, the second sub-CSI reporting setting further includes eighth information, where the eighth information indicates the second port or the second CDM group. For example, the network device determining the fourth information based on the first signal includes: the network device determining the fourth information based on the first signal, the CSI-RS resource, and the second port; or the network device determining the fourth information based on the first signal, the CSI-RS resource, and the second CDM group.

[0527] S750, the terminal device sends the third information and the fourth information to the network device according to the CSI reporting setting. Correspondingly, the network device receives the third information and the fourth information from the terminal device according to the CSI reporting setting.

[0528] The specific implementation method can refer to the relevant description of step S660 of the above method 600, which will not be explained here.

[0529] Based on the above solution, by increasing the number of CSI reporting settings (e.g., CSI-ReportSubConfig) or introducing a CSI sub-reporting setting dedicated to SBFD (e.g., CSI-ReportSubConfig-SBFD), CSI measurement in scenarios with different numbers of antenna ports is achieved without increasing the number of CSI reporting settings (e.g., CSI-ReportConfig), and the CSI measured in SBFD time units and non-SBFD time units is reported simultaneously, thereby improving the flexibility of CSI reporting in SBFD scenarios.

[0530] Figure 8 is a flow chart of a communication method provided in an embodiment of the present application. As shown in Figure 8, the method includes the following steps.

[0531] S810, the network device sends first information to the terminal device, and correspondingly, the terminal device receives the first information from the network device.

[0532] Among them, the first information indicates the first CSI reporting setting (protocol name: CSI Reporting Setting, high-level signaling: CSI-ReportConfig) and the second CSI reporting setting. The first CSI reporting setting is used to report the third information, and the second CSI reporting setting is used to report the fourth information. The third information includes the CSI on the SBFD time unit, and the fourth information includes the CSI on the non-SBFD time unit.

[0533] Exemplarily, the third information and the fourth information may be CSI.

[0534] That is, the first CSI reporting setting is a CSI reporting setting for an SBFD time unit, and the second CSI reporting setting is a CSI reporting setting for a non-SBFD time unit. In other words, the first CSI reporting setting is used to report CSI obtained by performing CSI measurement on an SBFD time unit, and the second CSI reporting setting is used to report CSI obtained by performing CSI measurement on a non-SBFD time unit.

[0535] Below, an example is given to illustrate a specific implementation manner of the first information indicating the first CSI reporting setting and the second CSI reporting setting.

[0536] Option 1:

[0537] In a first implementation, the first CSI reporting setting includes first indication information, the first indication information indicates that the first measurement result is reported through the resources indicated by the first CSI reporting setting, and the first measurement result includes the result measured on the first sub-CSI-RS resource. The second CSI reporting setting includes second indication information, the second indication information indicates that the second measurement result is reported through the resources indicated by the second CSI reporting setting, and the second measurement result includes the result measured on the second sub-CSI-RS resource. For the specific implementation method, please refer to the relevant description of step S410 of the above method 400 and will not be described here.

[0538] Optionally, before receiving the first information and before receiving the second information, the method further includes: the terminal device sending second capability information to the network device, the second capability information indicating that the terminal device supports a maximum value N of CSI reporting settings configured by the network. Optionally, the second information further indicates N1 CSI reporting configurations, where N1 is a positive integer less than or equal to N. In other words, the terminal device does not expect the number of CSI reporting settings configured for it by the network to exceed N.

[0539] Exemplarily, N is greater than 4, for example, N may be equal to any one of 6, 8, 10, 12, 16, and 32. By increasing the number of CSI reporting settings, the flexibility of CSI reporting in the SBFD scenario may be improved.

[0540] Optionally, the second capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0541] Option 2:

[0542] In one implementation, the first CSI reporting setting is a CSI reporting setting dedicated to SBFD, and the second CSI reporting setting is a CSI reporting setting not dedicated to SBFD. That is, the first information in this implementation may indicate two types of CSI reporting settings, such as a first type of CSI reporting setting (i.e., a CSI reporting setting dedicated to SBFD) and a second type of CSI reporting setting (i.e., a CSI reporting setting not dedicated to SBFD). For a specific implementation, reference may be made to the description of step S410 of the above method 400 and will not be further described here.

[0543] Optionally, before receiving the first information and before receiving the second information, the method further includes: the terminal device sends third capability information to the network device, the third capability information indicating that the terminal device supports the SBFD-specific CSI reporting setting configured by the network.

[0544] Optionally, the third capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0545] Optionally, the second information may further indicate N2 SBFD-specific CSI reporting settings and N3 non-SBFD-specific CSI reporting settings, where N2 ≤ 4, N3 ≤ 4, N2 + N3 ≤ 8, and N2 and N3 are positive integers. It should be understood that the number of SBFD-specific CSI reporting settings and the number of non-SBFD-specific CSI reporting settings are both less than or equal to 4, and that the total number of CSI reporting settings is implicitly increased by adding the SBFD-specific CSI reporting settings.

[0546] S820, the network device sends second information to the terminal device, and correspondingly, the terminal device receives the second information from the network device.

[0547] The second information indicates a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is used to receive a first signal, the second CSI-RS resource is used to receive a second signal, the first signal is used to determine the third information, and the second signal is used to determine the fourth information.

[0548] Optionally, the first CSI-RS resource and the second CSI-RS resource are included in a CSI resource setting (protocol name: CSI Resource Setting, higher layer signaling: CSI-ResourceConfig). For example, the second information indicates a CSI resource setting, and the CSI resource setting includes the first CSI-RS resource and the second CSI-RS resource.

[0549] Optionally, the present application does not specifically limit the number of first CSI-RS resources and second CSI-RS resources included in the CSI resource setting. For example, the number of first CSI-RS resources or second CSI-RS resources can be one or more.

[0550] Below, a specific implementation manner in which the second information indicates the first CSI-RS resource and the second CSI-RS resource is described with examples.

[0551] Option 1:

[0552] In one implementation, the first CSI-RS resource indicates a first time domain resource, the second CSI-RS resource indicates a second time domain resource, the first time domain resource includes an SBFD time unit, and the second time domain resource includes a non-SBFD time unit. For the specific implementation, please refer to the relevant description of step S520 of the above method 500 and will not be described again here.

[0553] Optionally, the present application does not limit the size of the number of ports of the first CSI-RS resource and the number of ports of the second CSI-RS resource, or whether the CDM type of the first CSI-RS resource and the CDM type of the second CSI-RS resource are the same. The specific implementation method can refer to the relevant description of step S520 of the above method 500, which will not be explained here.

[0554] Option 2:

[0555] In one implementation, the first CSI-RS resource is a CSI-RS resource dedicated to SBFD, and the second CSI-RS resource is a CSI-RS resource not dedicated to SBFD. That is, the second information in this implementation may indicate all CSI-RS resources in the CSI resource setting, where each CSI-RS resource includes two types of CSI-RS resources, such as a first type of CSI-RS resource (i.e., a CSI-RS resource dedicated to SBFD) and a second type of CSI-RS resource (i.e., a CSI-RS resource not dedicated to SBFD). For the specific implementation, please refer to the relevant description of step S520 of the above method 500 and will not be described again here.

[0556] It should be noted that the names of the above-mentioned first-type CSI-RS resources (or, CSI-RS resources dedicated to SBFD) and second-type CSI-RS resources (or, CSI-RS resources not dedicated to SBFD) are only examples given for ease of understanding, and this application does not limit them.

[0557] Optionally, before executing the above steps S810 and S820, that is, before the terminal device receives the first information and before receiving the second information, the method also includes: the terminal device sends first capability information to the network device, and the first capability information indicates that the terminal device supports the SBFD dedicated CSI-RS resources configured by the network.

[0558] Optionally, the first capability information is carried in a first signaling, the first signaling is an RRC signaling, and the first signaling is carried on a PUSCH.

[0559] Optionally, the first capability information and the third capability information involved above may be sent via fourth capability information. For example, before receiving the first information and before receiving the second information, the method further includes: the terminal device sending fourth capability information to the network device, the fourth capability information indicating that the terminal device supports the SBFD-specific CSI-RS resources and SBFD-specific sub-CSI reporting settings configured by the network device.

[0560] Optionally, the fourth capability information is carried in the first signaling, the first signaling is RRC signaling, and the first signaling is carried on the PUSCH.

[0561] Optionally, this application does not limit the execution order of the above steps S810 and S820. Please refer to the above related description for details.

[0562] S830: The network device sends a first signal to the terminal device. Correspondingly, the terminal device receives the first signal from the network device.

[0563] S840: The network device sends a second signal to the terminal device. Correspondingly, the terminal device receives the second signal from the network device.

[0564] For the specific implementation of steps S830-S840, reference may be made to the relevant description of steps S530-S540 of the method 500.

[0565] S850: The terminal device determines third information according to the first signal.

[0566] S860, the terminal device sends third information to the network device according to the first CSI reporting setting, and correspondingly, the network device receives the third information from the terminal device according to the first CSI reporting setting.

[0567] S870: The terminal device determines fourth information according to the second signal.

[0568] S880, the terminal device sends fourth information to the network device according to the second CSI reporting setting, and correspondingly, the network device receives the fourth information from the terminal device according to the second CSI reporting setting.

[0569] Among them, the specific implementation methods of the above steps S850 and S870 can refer to the relevant descriptions of steps S550 and S560 of the above method 500, and the specific implementation methods of the above steps S860 and S880 can refer to the relevant descriptions of steps S450 and S470 of the above method 400.

[0570] According to the solution provided in this application, by increasing the number of CSI reporting settings (e.g., CSI-ReportConfig) or introducing SBFD-specific CSI reporting settings (e.g., CSI-ReportConfig-SBFD), the flexibility of CSI reporting in SBFD scenarios is improved. This enables flexibility in CSI measurement and reporting when the number of base station antenna ports differs between SBFD and non-SBFD time units.

[0571] The communication method embodiment of the present application is described in detail above in conjunction with Figures 1 to 8 . Below, the communication device embodiment of the present application will be described in detail in conjunction with Figures 9 and 10 . It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0572] Figure 9 is a schematic diagram of a communication device provided in accordance with an embodiment of the present application. As shown in Figure 9, a communication device 900 includes a processing module 901 and a communication module 902. The communication device 900 may be a terminal device, or a communication device applied to a terminal device or used in conjunction with a terminal device and capable of implementing a method executed by the terminal device, such as a chip, a chip system, or a circuit; or, the communication device 900 may be a network device, or a communication device applied to a network device or used in conjunction with a network device and capable of implementing a method executed by the network device, such as a chip, a chip system, or a circuit;

[0573] The communication module may also be referred to as a transceiver module, transceiver, transceiver, or transceiver device. The processing module may also be referred to as a processor, processing board, processing unit, or processing device. Optionally, the communication module is used to perform the sending and receiving operations of the terminal device and network device in the above method. The device used to implement the receiving function in the communication module can be considered a receiving unit, and the device used to implement the sending function in the communication module can be considered a sending unit. That is, the communication module includes a receiving unit and a sending unit.

[0574] When the communication apparatus 900 is applied to a terminal device, the processing module 901 may be used to implement the processing functions of the terminal device in the above embodiments, and the communication module 902 may be used to implement the transceiver functions of the terminal device in the above embodiments.

[0575] When the communication device 900 is applied to a network device, the processing module 901 can be used to implement the processing function of the network device in the above embodiments, and the communication module 902 can be used to implement the transceiver function of the terminal device in the above embodiments.

[0576] In addition, it should be noted that the aforementioned communication module and / or processing module can be implemented by a virtual module, for example, the processing module can be implemented by a software functional unit or a virtual device, and the communication module can be implemented by a software function or a virtual device. Alternatively, the processing module or the communication module can also be implemented by a physical device, for example, if the device is implemented using a chip / circuit (such as an integrated circuit or a logic circuit, etc.). The communication module can be an input and output circuit and / or a communication interface, performing input operations (corresponding to the aforementioned receiving operations) and output operations (corresponding to the aforementioned sending operations); the processing module is an integrated processor or microprocessor or circuit (such as an integrated circuit or a logic circuit, etc.).

[0577] The division of modules in this application is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the examples of this application may be integrated into a single processor, exist physically as separate modules, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in either hardware or software functional modules.

[0578] Figure 10 is a schematic diagram of another communication device provided in an embodiment of the present application. As shown in Figure 10, communication device 1000 can optionally be a chip or a chip system. Optionally, in the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0579] The communication device 1000 can be used to implement the functions of any device (e.g., terminal device, network device) in the communication system described in the above examples. The communication device 1000 may include at least one processor 1010. Optionally, the processor 1010 is coupled to a memory, and the memory may be located within the device, or the memory may be integrated with the processor, or the memory may be located outside the device. For example, the communication device 1000 may also include at least one memory 1020. The memory 1020 stores the necessary computer programs, computer programs or instructions and / or data for implementing any of the above examples; the processor 1010 may execute the computer program stored in the memory 1020 to complete the method in any of the above examples.

[0580] The communication device 1000 may further include a communication interface 1030, through which the communication device 1000 can exchange information with other devices. Exemplarily, the communication interface 1030 may be a transceiver, a circuit, a bus, a module, a pin, or another type of communication interface. When the communication device 1000 is a chip-type device or circuit, the communication interface 1030 in the device 1000 may also be an input / output circuit that can input information (or receive information) and output information (or send information). The processor 1010 is an integrated processor, microprocessor, integrated circuit, or logic circuit, and the processor can determine output information based on input information.

[0581] Coupling in this application refers to an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules. Processor 1010 may operate in conjunction with memory 1020 and communication interface 1030. This application does not limit the specific connection medium between the processor 1010, memory 1020, and communication interface 1030.

[0582] Optionally, as shown in FIG10 , the processor 1010, the memory 1020, and the communication interface 1030 are interconnected via a bus 1040. Optionally, the bus may include an address bus, a data bus, a control bus, and other types of buses. Furthermore, for ease of illustration, FIG10 shows one bus 1040, but this does not mean that there is only one bus or only one type of bus.

[0583] It should be understood that the processors mentioned in the embodiments of the present application may be the following devices or the circuit portions of the following devices used for processing functions: a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0584] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0585] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0586] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0587] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by terminal devices and network devices in the above-mentioned method embodiments are stored.

[0588] An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by the terminal device and the network device in the above-mentioned method embodiments.

[0589] An embodiment of the present application also provides a communication system, which includes the terminal device and network device in the above embodiments.

[0590] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above and will not be described again here.

[0591] To facilitate understanding of the above embodiments provided in this application, the following points are explained:

[0592] 1) In this application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0593] 2) In this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Where a, b and c can be single or multiple, respectively.

[0594] 3) Throughout this application, the terms "first," "second," and various numerical references (e.g., #1, #2, etc.) are used to distinguish between different messages for ease of description and are not intended to limit the scope of the embodiments of this application. For example, they are used to distinguish between different messages, rather than to describe a specific order or precedence. It should be understood that such references are interchangeable, where appropriate, to allow for the description of scenarios beyond the embodiments of this application.

[0595] 4) In this application, descriptions such as "when...", "in the case of...", and "if" all mean that the device will perform corresponding processing under certain objective circumstances. They do not limit the time, nor do they require the device to perform judgment actions when implementing them, nor do they mean that there are other limitations.

[0596] 5) In this application, "indicate" or "used to indicate" can include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, and does not necessarily mean that the indication information carries A.

[0597] The indication methods involved in the embodiments of this application should be understood to encompass various methods that enable the party to be indicated to obtain information about the information to be indicated. The information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately. The transmission period and / or timing of these sub-information can be the same or different. This application does not limit the transmission method, for example.

[0598] In the embodiments of the present application, the "indication information" may be an explicit indication, i.e., a direct indication via signaling, or may be obtained based on parameters indicated by the signaling, in combination with other rules, other parameters, or by deduction. It may also be an implicit indication, i.e., based on a rule or relationship, or based on other parameters, or by deduction. This application does not impose specific limitations on this.

[0599] 6) In this application, "protocol" may refer to a standard protocol in the field of communications, such as 5G protocol, NR protocol, and related protocols used in future communication systems, which is not limited in this application. "Predefined" may include pre-definition. For example, protocol definition. "Preconfiguration" can be implemented by pre-saving corresponding codes, tables, or other methods that can be used to indicate relevant information in the device, and this application does not limit its implementation method.

[0600] 7) In this application, "communication" may also be described as "data transmission", "information transmission", "data processing", etc. "Transmission" includes "sending" and "receiving".

[0601] 8) In this application, "sending information to XX (device)" can be understood as the destination of the information being the device. This can include sending information directly or indirectly to the device. "Receiving information from XX (device)" can be understood as the source of the information being the device, which can include receiving information directly or indirectly from the device. The information may undergo necessary processing between the source and destination, such as format changes, but the destination can still understand the valid information from the source.

[0602] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0603] In this application, under the premise of no logical contradiction, the examples can reference each other, for example, the methods and / or terms between method embodiments can reference each other, for example, the functions and / or terms between device embodiments can reference each other, for example, the functions and / or terms between device examples and method examples can reference each other.

[0604] It should be understood that in some of the above embodiments, the devices in the existing network architecture are mainly used as examples for illustrative description, and the specific form of the devices is not limited in the embodiments of the present application. For example, devices that can achieve the same functions in the future are applicable to the embodiments of the present application.

[0605] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0606] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be described again here.

[0607] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0608] The units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0609] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0610] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0611] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: receiving first information, the first information indicating a first channel state information CSI reporting setting and a second CSI reporting setting, the first CSI reporting setting being used to report third information, the second CSI reporting setting being used to report fourth information, the third information including CSI on a sub-band full-duplex SBFD time unit, and the fourth information including CSI on a non-SBFD time unit; receiving second information, where the second information indicates a channel state information reference signal CSI-RS resource, where the CSI-RS resource is used to receive a first signal, where the CSI-RS resource includes a first sub-CSI-RS resource and a second sub-CSI-RS resource, where the first signal and the first sub-CSI-RS resource are used to determine the third information, and where the first signal and the second sub-CSI-RS resource are used to determine the fourth information; receiving the first signal according to the CSI-RS resource; Sending the third information according to the first CSI reporting setting, where the third information is carried on a first physical uplink control channel PUCCH or a first physical uplink shared channel PUSCH; The fourth information is sent according to the second CSI reporting setting, and the fourth information is carried on the second PUCCH or the second PUSCH.

2. The method according to claim 1, characterized in that The CSI-RS resource further includes a first period and an offset parameter, where the first period and the offset parameter indicate a first time domain resource, and the method further includes: Determine, in an SBFD time unit in the first time domain resource, the third information according to the first signal and the first sub-CSI-RS resource; The fourth information is determined according to the first signal and the second sub-CSI-RS resource in a non-SBFD time unit in the first time domain resource.

3. The method according to claim 1 or 2, characterized in that: The first sub-CSI-RS resource includes at least one of the following: an identifier of the first sub-CSI-RS resource, a first power control offset, a second power control offset, a first resource mapping mode, or first quasi-co-address QCL information, wherein the first power control offset is used to determine the power of the first sub-CSI-RS resource, and the second power control offset is used to determine the power of the first sub-CSI-RS resource; The second sub-CSI-RS resource includes at least one of the following: The identifier of the second sub-CSI-RS resource, the third power control bias, the fourth power control bias, the second resource mapping method, or the second QCL information, the third power control bias is used to determine the power of the second sub-CSI-RS resource, and the fourth power control bias is used to determine the power of the second sub-CSI-RS resource.

4. The method according to claim 2 or 3, characterized in that: The method further comprises: receiving the first signal according to the first sub-CSI-RS resource in the SBFD time unit in the first time domain resource; In a non-SBFD time unit in the first time domain resource, the first signal is received according to the second sub-CSI-RS resource.

5. The method according to claim 1, characterized in that: The first sub-CSI-RS resource includes a second period and an offset parameter, the second period and the offset parameter indicate a second time domain resource, the second sub-CSI-RS resource includes a third period and an offset parameter, the third period and the offset parameter indicate a third time domain resource, and the method further includes: determining, in an SBFD time unit in the second time domain resource, the third information according to the first sub-CSI-RS resource and the first signal; In a non-SBFD time unit in the third time domain resource, the fourth information is determined according to the second sub-CSI-RS resource and the first signal.

6. The method according to claim 5, characterized in that The second time domain resources include only SBFD time units, and the third time domain resources include only non-SBFD time units.

7. The method according to any one of claims 1 to 6, characterized in that The first CSI reporting setting includes first indication information, the first indication information indicates that a first measurement result is reported through resources indicated by the first CSI reporting setting, the first measurement result includes a result measured on the first sub-CSI-RS resource, the second CSI reporting setting includes second indication information, the second indication information indicates that a second measurement result is reported through resources indicated by the second CSI reporting setting, and the second measurement result includes a result measured on the second sub-CSI-RS resource.

8. The method according to any one of claims 1 to 6, characterized in that The first indication information includes an identifier of the first sub-CSI-RS resource, and the second indication information includes an identifier of the second sub-CSI-RS resource.

9. A communication method, characterized in that: include: Sending first information, where the first information indicates a first channel state information CSI reporting setting and a second CSI reporting setting, where the first CSI reporting setting is used to report third information, and the second CSI reporting setting is used to report fourth information, where the third information includes CSI on a sub-band full-duplex SBFD time unit, and the fourth information includes CSI on a non-SBFD time unit; sending second information, where the second information indicates a channel state information reference signal CSI-RS resource, where the CSI-RS resource is used to receive a first signal, where the CSI-RS resource includes a first sub-CSI-RS resource and a second sub-CSI-RS resource, where the first signal and the first sub-CSI-RS resource are used to determine the third information, and where the first signal and the second sub-CSI-RS resource are used to determine the fourth information; Sending the first signal according to the CSI-RS resource; receiving the third information according to the first CSI reporting setting, where the third information is carried on a first physical uplink control channel PUCCH or a first physical uplink shared channel PUSCH; The fourth information is received according to the second CSI reporting setting, where the fourth information is carried on a second PUCCH or a second PUSCH.

10. The method according to claim 9, characterized in that The CSI-RS resource further includes a first period and an offset parameter, wherein the first period and the offset parameter indicate a first time domain resource; In the SBFD time unit in the first time domain resource, the first signal and the first sub-CSI-RS resource are used to determine the third information; In a non-SBFD time unit in the first time domain resource, the first signal and the second sub-CSI-RS resource are used to determine the fourth information.

11. The method according to claim 9, characterized in that The first sub-CSI-RS resource includes a second period and an offset parameter, the second period and the offset parameter indicate a second time domain resource, the second sub-CSI-RS resource includes a third period and an offset parameter, the third period and the offset parameter indicate a third time domain resource; In the SBFD time unit in the second time domain resource, the first sub-CSI-RS resource and the first signal are used to determine the third information; In a non-SBFD time unit in the third time domain resource, the second sub-CSI-RS resource and the first signal are used to determine the fourth information.

12. The method according to claim 11, characterized in that The second time domain resources include only SBFD time units, and the third time domain resources include only non-SBFD time units.

13. The method according to any one of claims 9 to 12, characterized in that The first CSI reporting setting includes first indication information, the first indication information indicates that a first measurement result is reported through resources indicated by the first CSI reporting setting, the first measurement result includes a result measured on the first sub-CSI-RS resource, the second CSI reporting setting includes second indication information, the second indication information indicates that a second measurement result is reported through resources indicated by the second CSI reporting setting, and the second measurement result includes a result measured on the second sub-CSI-RS resource.

14. The method according to any one of claims 9 to 13, characterized in that The first indication information includes an identifier of the first sub-CSI-RS resource, and the second indication information includes an identifier of the second sub-CSI-RS resource.

15. A communication method, characterized in that: include: receiving first information, where the first information indicates a channel state information CSI reporting setting, where the CSI reporting setting includes a first sub-CSI reporting setting and a second sub-CSI reporting setting, where the first sub-CSI reporting setting is used to report third information, and the second sub-reporting setting is used to report fourth information, where the third information includes CSI on a sub-band full-duplex SBFD time unit, and the fourth information includes CSI on a non-SBFD time unit; receiving second information, where the second information indicates a first channel state information reference signal CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is used to receive a first signal, the second CSI-RS resource is used to receive a second signal, the first signal is used to determine the third information, and the second signal is used to determine the fourth information; receiving the first signal according to the first CSI-RS resource; receiving the second signal according to the second CSI-RS resource; The third information and the fourth information are sent according to the CSI reporting setting, and the third information and the fourth information are carried on a first physical uplink control channel PUCCH or a first physical uplink shared channel PUSCH.

16. The method according to claim 15, characterized in that The first CSI-RS resource indicates a first time domain resource, the second CSI-RS resource indicates a second time domain resource, the first time domain resource includes a SBFD time unit, and the second time domain resource includes a non-SBFD time unit.

17. The method according to claim 15 or 16, characterized in that The number of ports of the first CSI-RS resource is the same as the number of ports of the second CSI-RS resource, and the code division multiplexing CDM type of the first CSI-RS resource is the same as the CDM type of the second CSI-RS resource.

18. The method according to claim 17, characterized in that The first sub-CSI reporting setting includes fifth information, the fifth information indicates a first port or a first CDM group, and the receiving the first signal according to the first CSI-RS resource includes: receiving the first signal according to the first port and the first CSI-RS resource, or receiving the first signal according to the first CDM group and the first CSI-RS resource; and / or, The second sub-CSI reporting setting includes sixth information, the sixth information indicates a second port or a second CDM group, and the receiving the second signal according to the second CSI-RS resource includes: The second signal is received according to the second port and the second CSI-RS resource, or the second signal is received according to the second CDM group and the second CSI-RS resource.

19. The method according to any one of claims 15 to 18, characterized in that The first sub-CSI reporting setting includes first indication information, and the second sub-CSI reporting setting includes second indication information, the first indication information indicates that a first measurement result is reported through the resources indicated by the first sub-CSI reporting setting, the first measurement result includes a result measured on the first CSI-RS resource, the second indication information indicates that a second measurement result is reported through the resources indicated by the second sub-CSI reporting setting, and the second measurement result includes a result measured on the second CSI-RS resource.

20. A communication method, characterized in that: include: Sending first information, where the first information indicates a channel state information CSI reporting setting, where the CSI reporting setting includes a first sub-CSI reporting setting and a second sub-CSI reporting setting, where the first sub-CSI reporting setting is used to report third information, and the second sub-reporting setting is used to report fourth information, where the third information includes CSI on a sub-band full-duplex SBFD time unit, and the fourth information includes CSI on a non-SBFD time unit; Sending second information, where the second information indicates a first channel state information reference signal CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is used to receive a first signal, the second CSI-RS resource is used to receive a second signal, the first signal is used to determine the third information, and the second signal is used to determine the fourth information; Sending the first signal according to the first CSI-RS resource; Sending the second signal according to the second CSI-RS resource; The third information and the fourth information are received according to the CSI reporting setting, where the third information and the fourth information are carried on a first physical uplink control channel PUCCH or a first physical uplink shared channel PUSCH.

21. The method according to claim 20, characterized in that The first CSI-RS resource indicates a first time domain resource, the second CSI-RS resource indicates a second time domain resource, the first time domain resource includes a SBFD time unit, and the second time domain resource includes a non-SBFD time unit.

22. The method according to claim 20 or 21, characterized in that The number of ports of the first CSI-RS resource is the same as the number of ports of the second CSI-RS resource, and the code division multiplexing CDM type of the first CSI-RS resource is the same as the CDM type of the second CSI-RS resource.

23. The method according to claim 22, characterized in that The first sub-CSI reporting setting includes fifth information, the fifth information indicates a first port or a first CDM group, and the receiving the first signal according to the first CSI-RS resource includes: receiving the first signal according to the first port and the first CSI-RS resource, or receiving the first signal according to the first CDM group and the first CSI-RS resource; and / or, The second sub-CSI reporting setting includes sixth information, the sixth information indicates a second port or a second CDM group, and the receiving the second signal according to the second CSI-RS resource includes: The second signal is received according to the second port and the second CSI-RS resource, or the second signal is received according to the second CDM group and the second CSI-RS resource.

24. The method according to any one of claims 20 to 23, characterized in that The first sub-CSI reporting setting includes first indication information, the second sub-CSI reporting setting includes second indication information, An indication information indicates that a first measurement result is reported through the resources indicated by the first sub-CSI reporting setting, and the first measurement result includes a result measured on the first CSI-RS resource; and the second indication information indicates that a second measurement result is reported through the resources indicated by the second sub-CSI reporting setting, and the second measurement result includes a result measured on the second CSI-RS resource.

25. A communication device, characterized in that: Used to implement the method as claimed in any one of claims 1 to 8, or used to implement the method as claimed in any one of claims 15 to 19.

26. The device according to claim 25, characterized in that The communication device includes any one of the following: a terminal device or a chip.

27. A communication device, characterized in that: Used to implement the method as claimed in any one of claims 9 to 14, or used to implement the method as claimed in any one of claims 20 to 24.

28. The device according to claim 27, characterized in that The communication device includes any one of the following: a network device, a chip, a central unit CU or a distributed unit DU.

29. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instructions, which, when executed, causes the method according to any one of claims 1 to 8, the method according to any one of claims 9 to 14, or the method according to any one of claims 15 to 19 to be executed, or the method according to any one of claims 20 to 24 to be executed.

30. A computer program, characterized in that When the computer program is executed, the method according to any one of claims 1 to 8, the method according to any one of claims 9 to 14, the method according to any one of claims 15 to 19, or the method according to any one of claims 20 to 24 is executed.

31. A computer program product, characterized in that When the computer program product is executed, the method according to any one of claims 1 to 8 is implemented, or the method according to any one of claims 9 to 14 is implemented, or the method according to any one of claims 15 to 19 is implemented.

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