A method and device for reporting channel state information

Abstract

The present application discloses a channel state information reporting method and apparatus for solving the problem of system performance degradation. Specifically, different port groups configured for the same CSI-RS resource of a terminal device can be associated with different TCI states, or different resources belonging to the same resource group configured for the terminal device are associated with different TCI states, or different CSI reporting configurations configured for the terminal device are associated with different TRPs. When the terminal device performs channel measurement on resources associated with different TCI states, it assumes that both TRPs provide services for it, thereby reducing the impact on system performance. Different resources associated with different TCI states (such as port groups, CSI-RS resources, resource sets) can occupy different time units, providing sufficient time for the terminal device to switch beams.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for reporting channel state information. Background Art

[0002] In New Radio (NR) systems, multiple transmission reception point (TRP) transmission technology can be used to improve downlink performance. Specifically, two TRPs can simultaneously provide data transmission services to the same user equipment (UE). In terms of implementation, current communication standards provide two transmission methods: a transmission method based on multiple downlink control information (DCI) and a transmission method based on a single DCI.

[0003] The transmission method based on multiple DCI is as follows: two TRPs each send DCI to the UE. The DCI is used to schedule the physical downlink shared channel (PDSCH) to send service data to the UE. The transmission method based on single DCI is as follows: two TRPs send service data to the UE through the same DCI scheduling the same PDSCH. Some layers or some demodulation reference signal (DMRS) ports in the PDSCH are occupied by one TRP, and the other layers or DMRS ports are occupied by the other TRP.

[0004] The TRP sends DCI to the UE based on the CSI measurement results reported by the UE to schedule the PDSCH. Currently, the UE's CSI reporting and measurement do not take into account the situation of multiple TRPs, resulting in possible deviations in CSI measurement results and degraded system performance. Summary of the Invention

[0005] The present application provides a method and apparatus for reporting channel state information, which are used to solve the problem of system performance degradation caused by deviation in measurement results.

[0006] In the first aspect, an embodiment of the present application provides a channel state information reporting method, which can be applied to a communication device, which can be a terminal device, or a chip or chip system in the terminal device. Taking the terminal device as an example, the terminal device receives channel state information-reference signal CSI-RS resource configuration information from the network device, the CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource, the first port group corresponding to the first CSI-RS resource is associated with the first transmission configuration indication state, the second port group corresponding to the first CSI-RS resource is associated with the second transmission configuration indication state, the first port group includes at least one port, the second port group includes at least one port, and the identifiers of the ports included in the first port group are different from the identifiers of the ports included in the second port group; further, the terminal device performs CSI measurement according to the CSI-RS resource configuration information, and then reports the CSI to the network device. In the above manner, when the terminal device performs channel measurement on the CSI-RS resources associated with different transmission configuration indications, it assumes that both TRPs provide services for it, thereby reducing the deviation of the measurement results and reducing the impact on system performance.

[0007] In one possible design, the CSI-RS resource set also includes a second CSI-RS resource, and the port corresponding to the second CSI-RS resource is associated with the third transmission configuration indication state; the CSI includes a first measurement result obtained by performing CSI measurement on the CSI-RS resource in the CSI-RS resource set, and the first measurement result includes a first CSI parameter and a second CSI parameter; wherein the first CSI parameter includes a first channel state information-reference signal resource indication CRI, the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and the other CSI parameters in the first CSI parameter except the first CRI are determined on the first CSI-RS resource; wherein the second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and the other CSI parameters in the second CSI parameter except the second CRI are determined on the second CSI-RS resource. Through the above solution, the CSI reported by the terminal device includes two parts. When the terminal device measures CSI on a CSI-RS resource associated with two TCI states, it actually assumes that two TRPs are serving it at the same time, which can obtain better CSI measurement results. When multi-TRP scheduling is adopted, interference between transmissions of different TRPs is prevented. Moreover, the measurement result assuming that two TRPs are serving the terminal device at the same time can better reflect the overall channel state between the two TRPs and the terminal device, thereby improving system performance. The terminal device also measures CSI on a CSI-RS resource associated with one TCI-state, which can reflect the channel state between one TRP and the terminal device, thereby increasing the possibility of the terminal device adopting single TRP scheduling.

[0008] In one possible design, ports in a first port group belong to a first code division multiple access (CDM) group set, which includes one or more CDM groups; the first CDM group set is associated with a first transmission configuration indication state; ports in a second port group belong to a second code division multiple access (CDM) group set, which includes one or more CDM groups; the second CDM group set is associated with a second transmission configuration indication state; and identifiers of the CDM groups in the first CDM group set are different from identifiers of the CDM groups in the second CDM group set. In the above design, using CDM groups to distinguish which IRP is associated is simple and effective.

[0009] In one possible design, the first CSI-RS resource includes J CDM groups, where J is an integer greater than 1; the first CDM group set includes J1 CDM groups, where J1 CDM groups are the 1st CDM group to the J1th CDM group among the J CDM groups; the second CDM group set includes J1 CDM groups, where J1 CDM groups are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, and J1 = floor(J / 2), where floor() represents a rounding-down operation. Through the above design, a simple and effective association relationship between port groups and transmission configuration indication states is provided. And the number of port groups associated with different transmission configuration indication states is the same, which reduces the complexity of terminal device implementation.

[0010] In one possible design, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units. In the above design, port groups associated with different transmission configuration indication states are located in different time units, which provides time for terminal devices to switch beams when receiving service data on different beams, thereby improving the integrity of service data received by the terminal devices.

[0011] In one possible design, the first transmission configuration indication state includes a quasi-co-station type D, and / or the second transmission configuration indication state includes a quasi-co-station type D; the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units. Since the quasi-co-stack type D is used to indicate the reception of an analog beam, the first transmission configuration indication state includes a quasi-co-station type D, and / or the second transmission configuration indication state includes a quasi-co-station type D, the terminal device may use different analog beams. Therefore, by associating port groups with different transmission configuration indication states in different time units, time for switching beams is provided for the terminal device to receive service data on different beams, thereby improving the completeness of the service data received by the terminal device.

[0012] In one possible design, the time-frequency resources corresponding to the ports included in the first port group are not adjacent to the time-frequency resources corresponding to the ports included in the second port group in the time domain. In the above design, the port groups associated with different transmission configuration indication states are located in different time units and are not adjacent, further providing sufficient time for the terminal device to switch beams when receiving service data on different beams, thereby improving the integrity of the service data received by the terminal device.

[0013] In one possible design, the number of time units in the time domain between the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group is greater than or equal to the capability parameter reported by the terminal device. In the above design, the port groups associated with different transmission configuration indication states are located in different time units and the number of time units between them is greater than or equal to the capability parameter reported by the terminal device, which further provides the terminal device with sufficient time to switch beams when receiving service data on different beams, thereby improving the completeness of the service data received by the terminal device.

[0014] In one possible design, a terminal device receives mode indication information from a network device, where the mode indication information is used to indicate that each of N CSI-RS resources included in a CSI-RS resource set is associated with one of M transmission modes, the N CSI-RS resources include a first CSI-RS resource and a second CSI-RS resource, N is an integer greater than 1, and M is a positive integer less than or equal to N.

[0015] In the second aspect, an embodiment of the present application provides a channel state information reporting method, which can be applied to a communication device, which can be a network device, or a chip or chip system in the network device. Taking a network device as an example, the network device sends channel state information-reference signal CSI-RS resource configuration information to a terminal device, the CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource, the first port group corresponding to the first CSI-RS resource is associated with the first transmission configuration indication state, the second port group corresponding to the first CSI-RS resource is associated with the second transmission configuration indication state, the first port group includes at least one port, the second port group includes at least one port, and the identifiers of the ports included in the first port group are different from the identifiers of the ports included in the second port group; the network device receives the CSI reported by the terminal device, and the CSI is obtained by the terminal device performing CSI measurement based on the CSI-RS resource configuration information.

[0016] In one possible design, the CSI-RS resource set also includes a second CSI-RS resource, and the port corresponding to the second CSI-RS resource is associated with the third transmission configuration indication state; the CSI includes a first measurement result obtained by performing CSI measurement on the CSI-RS resource in the CSI-RS resource set, and the first measurement result includes a first CSI parameter and a second CSI parameter; wherein the first CSI parameter includes a first channel state information-reference signal resource indication CRI, the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and the other CSI parameters in the first CSI parameter except the first CRI are determined on the first CSI-RS resource; wherein the second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and the other CSI parameters in the second CSI parameter except the second CRI are determined on the second CSI-RS resource.

[0017] In one possible design, the ports in the first port group belong to a first code division multiple access CDM group set, the first CDM group set includes one or more CDM groups; the first CDM group set is associated with a first transmission configuration indication state; the ports in the second port group belong to a second code division multiple access group CDM group set, the second CDM group set includes one or more CDM groups; the second CDM group set is associated with a second transmission configuration indication state; the identifiers of the CDM groups in the first CDM group set are different from the identifiers of the CDM groups in the second CDM group set.

[0018] In one possible design, the first CSI-RS resource includes J CDM groups, where J is an integer greater than 1; the first CDM group set includes J1 CDM groups, where the J1 CDM groups are from the 1st CDM group to the J1th CDM group among the J CDM groups; the second CDM group set includes J1 CDM groups, where the J1 CDM groups are from the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, and J1 = floor(J / 2), where floor() represents rounding down operation.

[0019] In one possible design, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units.

[0020] In one possible design, the first transmission configuration indication state includes quasi-co-station type D, and / or the second transmission configuration indication state includes quasi-co-station type D; the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units.

[0021] In one possible design, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are not adjacent in the time domain.

[0022] In one possible design, the number of time units in the time domain between the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group is greater than or equal to the capability parameter reported by the terminal device.

[0023] In one possible design, a network device sends mode indication information to a terminal device, where the mode indication information is used to indicate that each of N CSI-RS resources included in a CSI-RS resource set is associated with one of M transmission modes, and the N CSI-RS resources include a first CSI-RS resource and a second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

[0024] On the third aspect, an embodiment of the present application provides a channel state information reporting method, which can be applied to a communication device, which can be a terminal device, or a chip or chip system in the terminal device. Taking the terminal device as an example, the terminal device receives the first channel state information-reference signal CSI-RS resource configuration information from the network device, the first CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource group, the first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with the first transmission configuration indication state, and the second CSI-RS resource is associated with the second transmission configuration indication state; there is an association between the first CSI-RS resource and the second CSI-RS resource; further, the terminal device performs CSI measurement according to the first CSI-RS resource configuration information and reports the CSI to the network device. In the above manner, when the terminal device performs channel measurement on multiple CSI-RS resources associated with different transmission configuration indications, it assumes that both TRPs provide services for it, thereby reducing the deviation of the measurement results and reducing the impact on system performance.

[0025] In one possible design, the CSI resource configuration information also includes a third CSI-RS resource, and the third CSI-RS resource is associated with a third transmission configuration indication state; the CSI includes a first measurement result obtained by performing CSI measurement on the CSI-RS resource in the CSI-RS resource set, and the first measurement result includes a first CSI parameter and a second CSI parameter; wherein, the first CSI parameter includes a first CRI, and the CSI-RS resource indicated by the first CRI is the third CSI-RS resource, and other parameters in the first CSI parameter except the first CRI are determined on the third CSI-RS resource; wherein, the second CSI parameter includes a second CRI, and the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group, and other parameters in the second CSI parameter except the second CRI are determined on the first CSI-RS resource group. In the above design, the optimal result is measured individually for each CSI-RS resource, and the measurement result of the joint measurement of two different CSI-RS resources with different transmission configuration indication states is also associated to prevent interference between transmissions of different TRPs. Moreover, the measurement result, which assumes that two TRPs serve the terminal device at the same time, can better reflect the overall channel state between the two TRPs and the terminal device, thereby improving system performance. The terminal device also measures CSI on each CSI-RS resource, which can reflect the channel state between one TRP and the terminal device, increasing the possibility of the terminal device adopting single TRP scheduling.

[0026] In one possible design, the first CSI-RS resource and the second CSI-RS resource occupy different time units. In this design, CSI-RS resources associated with different transmission configuration indication states are located in different time units. This provides time for the terminal device to switch beams when receiving service data on different beams, thereby improving the integrity of the service data received by the terminal device.

[0027] In one possible design, the first transmission configuration indication state includes a quasi-co-station type D or the second transmission configuration indication state includes a quasi-co-station type D; the first CSI-RS resource and the second CSI-RS resource occupy different time units. Since the quasi-co-stack type D is used to indicate the reception of an analog beam, the first transmission configuration indication state includes the quasi-co-station type D, and / or the second transmission configuration indication state includes the quasi-co-station type D, the terminal device may use different analog beams. Therefore, by associating different CSI-RS resources of different transmission configuration indication states in different time units, the terminal device is provided with time to switch beams when receiving service data on different beams, thereby improving the completeness of the service data received by the terminal device.

[0028] In one possible design, the first CSI-RS resource and the second CSI-RS resource are non-adjacent in the time domain. In this design, CSI-RS resources associated with different transmission configuration indication states are located in different time units and are non-adjacent. This further provides sufficient time for the terminal device to switch beams when receiving service data on different beams, thereby improving the integrity of the service data received by the terminal device.

[0029] In one possible design, the time unit interval occupied by the first CSI-RS resource and the second CSI-RS resource is greater than or equal to the capability parameter reported by the terminal device. In the above design, different CSI-RS resources associated with different transmission configuration indication states are located in different time units and the number of time units between them is greater than or equal to the capability parameter reported by the terminal device, further providing the terminal device with sufficient time to switch beams when receiving service data on different beams, thereby improving the completeness of service data received by the terminal device.

[0030] In one possible design, a terminal device receives mode indication information from a network device, where the mode indication information is used to indicate that each of N CSI-RS resources included in a CSI-RS resource set is associated with one of M transmission modes, where the N CSI-RS resources include a first CSI-RS resource and a second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N. With the above design, different CSI-RS resources can use the same or different measurement methods, thereby improving flexibility.

[0031] In one possible design, the number of ports corresponding to the CSI-RS resources included in the first CSI-RS resource group is greater than 16.

[0032] In a possible design, it also includes: receiving second CSI-RS resource configuration information from a network device, the second CSI-RS resource configuration information includes a CSI-RS resource set, the first port group corresponding to the first CSI-RS resource included in the CSI-RS resource set is associated with the first transmission configuration indication state, the second port group corresponding to the first CSI-RS resource is associated with the second transmission configuration indication state, the first port group includes at least one port, the second port group includes at least one port, and the identifiers of the ports included in the first port group are different from the identifiers of the ports included in the second port group; before performing CSI measurement according to the first resource configuration information, it also includes: receiving a configuration indication from the network device, the configuration indication is used to indicate the use of a first resource configuration method, the resource configuration method of the first CSI-RS resource configuration information is the first resource configuration method, and the resource configuration method of the second CSI-RS resource configuration information is the second resource configuration method. The present application provides multiple resource configuration methods, and the network device can instruct the terminal device as needed which resource configuration method to use, thereby improving flexibility.

[0033] In the fourth aspect, an embodiment of the present application provides a channel state information reporting method, which can be applied to a communication device, which can be a network device, or a chip or chip system in the network device. For specific beneficial effects, please refer to the relevant description of the third aspect and any design of the third aspect, which will not be repeated here. Taking the network device as an example, the network device sends the first channel state information-reference signal CSI-RS resource configuration information to the terminal device, the first CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource group, the first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with the first transmission configuration indication state, and the second CSI-RS resource is associated with the second transmission configuration indication state; there is an association between the first CSI-RS resource and the second CSI-RS resource; further, the network device receives the CSI reported by the terminal device, and the CSI is obtained by the terminal device performing CSI measurement based on the first CSI-RS resource configuration information.

[0034] In one possible design, the CSI resource configuration information also includes a third CSI-RS resource, and the third CSI-RS resource is associated with a third transmission configuration indication state; the CSI includes a first measurement result obtained by performing CSI measurement on the CSI-RS resource in the CSI-RS resource set, and the first measurement result includes a first CSI parameter and a second CSI parameter; wherein, the first CSI parameter includes a first CRI, and the CSI-RS resource indicated by the first CRI is the third CSI-RS resource, and other parameters in the first CSI parameter except the first CRI are determined on the third CSI-RS resource; wherein, the second CSI parameter includes a second CRI, and the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group, and other parameters in the second CSI parameter except the second CRI are determined on the first CSI-RS resource group.

[0035] In one possible design, the first CSI-RS resource and the second CSI-RS resource occupy different time units.

[0036] In one possible design, the first transmission configuration indication state includes quasi co-station type D or the second transmission configuration indication state includes quasi co-station type D; the time units occupied by the first CSI-RS resource and the second CSI-RS resource are different.

[0037] In one possible design, the first CSI-RS resource and the second CSI-RS resource are not adjacent in the time domain.

[0038] In one possible design, the time unit interval occupied by the first CSI-RS resource and the second CSI-RS resource is greater than or equal to the capability parameter reported by the terminal device.

[0039] In one possible design, a network device sends mode indication information to a terminal device, where the mode indication information is used to indicate that each of N CSI-RS resources included in a CSI-RS resource set is associated with one of M transmission modes, and the N CSI-RS resources include a first CSI-RS resource and a second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

[0040] In one possible design, the number of ports corresponding to the CSI-RS resources included in the first CSI-RS resource group is greater than 16.

[0041] In one possible design, it also includes: receiving second CSI-RS resource configuration information from a network device, the second CSI-RS resource configuration information includes a CSI-RS resource set, the first port group corresponding to the first CSI-RS resource included in the CSI-RS resource set is associated with the first transmission configuration indication state, the second port group corresponding to the first CSI-RS resource is associated with the second transmission configuration indication state, the first port group includes at least one port, the second port group includes at least one port, and the identifiers of the ports included in the first port group are different from the identifiers of the ports included in the second port group; before performing CSI measurement according to the first resource configuration information, it also includes: receiving a configuration indication from the network device, the configuration indication is used to indicate the use of a first resource configuration method, the resource configuration method of the first CSI-RS resource configuration information is the first resource configuration method, and the resource configuration method of the second CSI-RS resource configuration information is the second resource configuration method.

[0042] In a fifth aspect, an embodiment of the present application provides a channel state information reporting method, which can be applied to a communication device, which can be a terminal device, or a chip or chip system in the terminal device. Taking the terminal device as an example, the terminal device receives a CSI reporting configuration group from the network device, the CSI reporting configuration group includes a first CSI reporting configuration and a second CSI reporting configuration, the first CSI reporting configuration and the second CSI reporting configuration are used to configure a method for reporting CSI to the terminal device, the first CSI reporting configuration is associated with a first CSI-RS resource set, the second CSI reporting configuration is associated with a second CSI-RS resource set, the first CSI-RS resource set is associated with a first transmission configuration indication state, the second CSI-RS resource set is associated with a second transmission configuration indication state, the first CSI reporting configuration and the second CSI reporting configuration have a binding relationship, the binding relationship is used to indicate that CSI measurement is performed on the CSI-RS resource sets respectively associated with the two CSI reporting configurations having a binding relationship; further, the terminal device performs CSI measurement according to the CSI reporting configuration group and reports CSI to the network device. In the above manner, when the terminal device performs channel measurement on a CSI-RS resource set associated with different transmission configuration indications, it assumes that both TRPs provide services for it, thereby reducing the deviation of the measurement results and reducing the impact on system performance.

[0043] In one possible design, the CSI includes measurement results obtained by performing CSI measurement on a first CSI-RS resource set associated with a first CSI reporting configuration, measurement results obtained by performing CSI measurement on a second CSI-RS resource set associated with a second CSI reporting configuration, and measurement results obtained by performing CSI measurement on the first CSI-RS resource set and the second CSI-RS resource set.

[0044] In one possible design, the method also includes: the terminal device receives indication information from the network device, the indication information is used to indicate that the first CSI reporting configuration and the second CSI reporting configuration in the CSI reporting configuration group have a binding relationship.

[0045] In one possible design, the first CSI-RS resource set and the second CSI-RS resource set occupy different time units.

[0046] In one possible design, the first transmission configuration indication state includes quasi co-station type D or the second transmission configuration indication state includes quasi co-station type D; the time units occupied by the first CSI-RS resource set and the second CSI-RS resource set are different.

[0047] In one possible design, the first CSI-RS resource set and the second CSI-RS resource set are not adjacent in the time domain.

[0048] In one possible design, the time unit interval occupied by the first CSI-RS resource set and the second CSI-RS resource set is greater than or equal to the capability parameter reported by the terminal device.

[0049] In a sixth aspect, an embodiment of the present application provides a channel state information reporting method, which can be applied to a communication device, which can be a network device, or a chip or chip system in the network device. Taking the network device as an example, the network device sends a CSI reporting configuration group to the terminal device, the CSI reporting configuration group includes a first CSI reporting configuration and a second CSI reporting configuration, the first CSI reporting configuration and the second CSI reporting configuration are used to configure a method for reporting CSI to the terminal device, the first CSI reporting configuration is associated with a first CSI-RS resource set, the second CSI reporting configuration is associated with a second CSI-RS resource set, the first CSI-RS resource set is associated with a first transmission configuration indication state, the second CSI-RS resource set is associated with a second transmission configuration indication state, the first CSI reporting configuration and the second CSI reporting configuration have a binding relationship, and the binding relationship is used to indicate that CSI measurement is performed on the CSI-RS resource sets respectively associated with the two CSI reporting configurations having a binding relationship; further, the terminal device performs CSI measurement according to the CSI reporting configuration group and reports CSI to the network device, so that the network device receives the CSI reported by the terminal device.

[0050] In one possible design, the CSI includes measurement results obtained by performing CSI measurement on a first CSI-RS resource set associated with a first CSI reporting configuration, measurement results obtained by performing CSI measurement on a second CSI-RS resource set associated with a second CSI reporting configuration, and measurement results obtained by performing CSI measurement on the first CSI-RS resource set and the second CSI-RS resource set.

[0051] In one possible design, the method also includes: the network device sends indication information to the terminal device, where the indication information is used to indicate that the first CSI reporting configuration and the second CSI reporting configuration in the CSI reporting configuration group have a binding relationship.

[0052] In one possible design, the first CSI-RS resource set and the second CSI-RS resource set occupy different time units.

[0053] In one possible design, the first transmission configuration indication state includes quasi co-station type D or the second transmission configuration indication state includes quasi co-station type D; the time units occupied by the first CSI-RS resource set and the second CSI-RS resource set are different.

[0054] In one possible design, the first CSI-RS resource set and the second CSI-RS resource set are not adjacent in the time domain.

[0055] In one possible design, the time unit interval occupied by the first CSI-RS resource set and the second CSI-RS resource set is greater than or equal to the capability parameter reported by the terminal device.

[0056] In a seventh aspect, the present application provides a communication device for a terminal device or a chip of a terminal device, comprising a unit or means for executing the method in the aforementioned first aspect or any possible implementation of the first aspect, or comprising a unit or means for executing the method in the aforementioned third aspect or any possible implementation of the third aspect, or comprising a unit or means for executing the method in the aforementioned fifth aspect or any possible implementation of the fifth aspect.

[0057] In an eighth aspect, the present application provides a communication device for a network device or a chip of a network device, comprising a unit or means for executing the method in the aforementioned second aspect or any possible implementation of the second aspect, or comprising a unit or means for executing the method in the aforementioned fourth aspect or any possible implementation of the fourth aspect, or comprising a unit or means for executing the method in the aforementioned sixth aspect or any possible implementation of the sixth aspect.

[0058] In a ninth aspect, the present application provides a communication device for a terminal device or a chip of a terminal device, comprising at least one processing element and at least one storage element, wherein the at least one storage element is used to store programs and data, and the at least one processing element is used to execute the method in the aforementioned first aspect or any possible implementation of the first aspect, or to execute the method in the aforementioned third aspect or any possible implementation of the third aspect, or to execute the method in the aforementioned fifth aspect or any possible implementation of the fifth aspect.

[0059] In the tenth aspect, the present application provides a communication device for a network device or a chip of a network device, comprising at least one processing element and at least one storage element, wherein the at least one storage element is used to store programs and data, and the at least one processing element is used to execute the method in the aforementioned second aspect or any possible implementation of the second aspect, or to execute the method in the aforementioned fourth aspect or any possible implementation of the fourth aspect, or to execute the method in the aforementioned sixth aspect or any possible implementation of the sixth aspect.

[0060] In the eleventh aspect, the present application provides a communication device comprising a processor and a communication interface, the communication interface being used to input and / or output signals, the signals comprising data and / or program instructions, and the communication interface being capable of receiving signals from other communication devices outside the communication device and transmitting them to the processor or sending signals from the processor to other communication devices outside the communication device, the processor being used to implement the method in the aforementioned first aspect or any possible implementation of the first aspect through logic circuits or execution code instructions; or, being used to implement the method in the aforementioned third aspect or any possible implementation of the third aspect; or, being used to implement the method in the aforementioned fifth aspect or any possible implementation of the fifth aspect.

[0061] In the twelfth aspect, the present application provides a communication device comprising a processor and a communication interface, the communication interface being used to input and / or output signals, the signals comprising data and / or program instructions, and the communication interface being capable of receiving signals from other communication devices outside the communication device and transmitting them to the processor or sending signals from the processor to other communication devices outside the communication device, the processor being used to implement the method in the aforementioned second aspect or any possible implementation of the second aspect through logic circuits or execution code instructions; or, being used to implement the method in the aforementioned fourth aspect or any possible implementation of the fourth aspect; or, being used to implement the method in the aforementioned sixth aspect or any possible implementation of the sixth aspect.

[0062] In the thirteenth aspect, the present application provides a computer program product, which includes computer instructions. When the computer instructions are executed, the method in the aforementioned first aspect or any possible implementation of the first aspect is executed, or the method in the aforementioned third aspect or any possible implementation of the third aspect is executed, or the method in the aforementioned fifth aspect or any possible implementation of the fifth aspect is executed.

[0063] In the fourteenth aspect, the present application provides a computer program product, which includes computer instructions. When the computer instructions are executed, the method in the aforementioned second aspect or any possible implementation of the second aspect is executed, or the method in the aforementioned fourth aspect or any possible implementation of the fourth aspect is executed, or the method in the aforementioned sixth aspect or any possible implementation of the sixth aspect is executed.

[0064] In the fifteenth aspect, the present application provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed, the method in the aforementioned first aspect or any possible implementation of the first aspect is executed, or the method in the aforementioned third aspect or any possible implementation of the third aspect is executed, or the method in the aforementioned fifth aspect or any possible implementation of the fifth aspect is executed.

[0065] In the sixteenth aspect, the present application provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed, the method in the aforementioned second aspect or any possible implementation of the second aspect is executed, or the method in the aforementioned fourth aspect or any possible implementation of the fourth aspect is executed, or the method in the aforementioned sixth aspect or any possible implementation of the sixth aspect is executed.

[0066] For the introduction of the beneficial effects of the seventh to sixteenth aspects, please refer to the records of the first to sixth aspects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 A schematic diagram of a communication system architecture provided in an embodiment of the present application;

[0068] Figure 2 A flowchart of a first possible method for reporting channel state information provided in an embodiment of the present application;

[0069] Figure 3 A schematic diagram of another communication system architecture provided in an embodiment of the present application;

[0070] Figure 4A flowchart of a second possible method for reporting channel state information provided in an embodiment of the present application;

[0071] Figure 5 A schematic flow chart of a third possible method for reporting channel state information provided in an embodiment of the present application;

[0072] Figure 6 A schematic structural diagram of a communication device 600 provided in an embodiment of the present application;

[0073] Figure 7 A schematic structural diagram of a communication device 700 provided in an embodiment of the present application;

[0074] Figure 8 A schematic diagram of the structure of a communication device 800 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0075] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0076] 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), universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, 5G mobile communication system or new radio access technology (NR). Among them, the 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA).

[0077] The technical solution provided in this application can also be applied to machine type communication (MTC), long term evolution technology for machine-to-machine communication (LTE-M), device-to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, the IoT network may include, for example, the Internet of Vehicles. Among them, the communication mode in the Internet of Vehicles system is collectively referred to as vehicle to other devices (vehicle to X, V2X, X can represent anything), for example, the V2X may include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) communication or vehicle to network (V2N) communication, etc.

[0078] The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, etc. This application does not limit this.

[0079] It should be understood that “one embodiment”, “one implementation”, “one implementation method” or “one example” mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, “in one embodiment”, “an implementation method”, “one implementation method” or “in an example” appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the sequence 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.

[0080] In addition, the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. Indicates the rounding down of X, which can also be expressed as floor(X). Indicates that Y is rounded up, and can also be expressed as ceiling(Y). In addition, the character " / " in this article generally indicates that the objects associated with each other are in an "or" relationship. The term "at least one" involved in this application refers to one, or more than one, that is, including one, two, three and more; "plurality" refers to two, or more than two, that is, including two, three and more. In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used to distinguish the purpose of description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. "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, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. It should be understood that in the embodiments of the present application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information. In the present application, "used for indication" may include being used for direct indication and being used for indirect indication. When describing a certain indication information as being used to indicate A, it may include the indication information directly indicating A or indirectly indicating A, but it does not mean that the indication information must carry A. In addition, the terms "including" and "having" in the embodiments, claims, and drawings of the present application are not exclusive. For example, a process, method, system, product, or device that includes a series of steps or modules is not limited to the listed steps or modules, and may also include steps or modules that are not listed.

[0081] Figure 1 A communication system 100 provided in an embodiment of the present application is shown. The communication system 100 may include network devices and terminal devices. The embodiment of the present application does not limit the number of network devices and terminal devices included in the communication system. Figure 1 The example includes 6 terminal devices, namely terminal device 1 to terminal device 6. Figure 1 This is just a schematic diagram. The communication system may also include other network devices, such as core network devices, wireless relay devices and wireless backhaul devices. Figure 1 Not shown. The network device can provide wireless access-related services to the terminal device, implementing one or more of the following functions: wireless physical layer functions, resource scheduling and wireless resource management, quality of service (QoS) management, wireless access control, and mobility management. The terminal device can communicate with the network device via the air interface.

[0082] A network device is an access device that a terminal device uses to access the mobile communication system wirelessly. It can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. It can also be a module or unit that performs some of the functions of a base station, for example, a centralized unit (CU) or a distributed unit (DU). The embodiments of this application do not limit the specific technology and specific device form adopted by the network device.

[0083] The terminal device may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0084] The network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water; can also be deployed in the air on aircraft, balloons and artificial satellites. The embodiments of this application do not limit the application scenarios of the network equipment and terminal equipment.

[0085] The network device and the terminal device can communicate through the licensed spectrum, the unlicensed spectrum, or both. The network device and the terminal device can communicate through the spectrum below 6 gigahertz (GHz), the spectrum above 6 GHz, or both. The network device and the terminal device can communicate through the spectrum below 6 GHz and the spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.

[0086] The system architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0087] The technical concepts involved in the embodiments of this application are explained below.

[0088] 1) A TRP transmission method based on multiple DCIs, which can be referred to as mDCI mTRP.

[0089] The method based on multiple DCI is: 2 TRPs each send 1 DCI. Specifically, the 2 TRPs send DCI to the same terminal device respectively. Different TRPs schedule different PDSCHs and send different service data to the same terminal device. DCI is the control information in the physical layer that the network device uses to instruct the behavior of the terminal device. At the same time, the terminal device will also receive high-layer signaling from the network device to instruct the behavior of the terminal device. High-layer signaling is indication information above the physical layer for controlling and managing related terminal devices, such as radio resource control (RRC) signaling. The network device configures control channel resource configuration information to the terminal device. The control channel resource configuration information includes a control resource set (CORESET) and a control resource set (CORESET) pool index (CORESET Pool Index). The CORESET Pool Index is used to indicate the control resource set pool to which the CORESET belongs. The physical downlink control channel (PDCCH) carrying DCI is sent on the downlink control resource associated with the CORESET.

[0090] If the CORESET Pool Index is different, the TRP for sending DCI using the PDCCH in the CORESET will be different. In other words, the CORESET Pool Index in the control channel resource configuration information can be used to distinguish different TRPs. For example, when the CORESET Pool Index in the control channel resource configuration information corresponding to two DCIs is different, then the two DCIs come from different TRPs. It should be noted that although the two PDSCHs scheduled by the above two DCIs are sent to the same terminal device, when the two TRPs send service data through the scheduled PDSCHs respectively, due to the non-ideal transmission parameters, the two PDSCHs will interfere with each other. For example, the network device sends PDSCH1 to the terminal device through TRP1 and sends PDSCH2 to the same terminal device through TRP2. When PDSCH1 and PDSCH2 overlap in time and frequency, PDSCH1 will cause strong interference to the reception of PDSCH2 on the overlapping resources, and PDSCH2 will also cause strong interference to the reception of PDSCH1.

[0091] 2) TRP transmission method based on single DCI.

[0092] The method based on single DCI is: 2 TRPs send 1 DCI to the terminal device, which is used to schedule PDSCH to send service data to the terminal device. However, part of the layers or part of the DMRS (Demodulation reference signal) ports in the PDSCH are occupied by one TRP, and the other part of the layers or DMRS ports are occupied by another TRP. Since the layers or DMRS ports of the PDSCH are occupied by different TRPs, the time-frequency offsets of the signals from different TRPs reaching the terminal device are different. In order to compensate for these different time-frequency offsets, the NR protocol stipulates: In the multi-TRP transmission mode of single DCI, the network device configures the terminal device with an association relationship between a code point of the domain transmission configuration indication (TCI) in the DCI and two different TCI states (TCI state) through high-layer signaling. The network device can indicate two different TCI states to the terminal device at the same time through the domain TCI in the DCI. Each TCI state can be used to configure the quasi co-location (QCL) relationship between a group of DMRS ports of the PDSCH and other downlink reference signals. When in single TRP mode, a code point in the TCI field in the DCI is associated with only one TCI state.

[0093] It should be noted that if the channel characteristics of a DMRS port symbol can be derived from another DMRS port, it is considered that the two DMRS ports have a QCL relationship, and the channel estimation result obtained from one DMRS port can be used by the other DMRS port.

[0094] In addition, multi-TRP transmission based on a single DCI can also be used to enhance the reliability of signal transmission. In the NR Rel-16 protocol, three methods are introduced: (1) single DCI based on space division multiplexing (SDM-based), single DCI based on frequency division multiplexing (FDM-based), and single DCI based on time division multiplexing (TDM-based) to achieve enhanced signal reliable transmission.

[0095] (1) Single-DCI based SDM scheme, which can be referred to as Scheme 1A or Scheme 1a.

[0096] Two TRPs transmit different streams from the same PDSCH to the same terminal device over the same time-frequency resources. This reduces the bit rate by distributing the same signal across multiple, spatially isolated streams based on spatial division multiplexing. Furthermore, since the signal is transmitted from two physically separate TRPs to the same terminal device, spatial diversity gain is achieved, effectively improving signal transmission reliability. However, due to the non-ideal nature of signal transmission, different streams may interfere with each other.

[0097] (2) Single-DCI based FDM Scheme A. This can be referred to as Scheme 2A or Scheme 2a.

[0098] Two TRPs send the same PDSCH to the same terminal device on different frequency domain resources. Specifically, the same redundant version of the same codeword is mapped to different frequency domain resources, and different TRPs send the same DCI to the terminal device through different frequency domain resources. From the terminal device's receiving perspective, it is similar to ordinary PDSCH sent based on a single TRP. The difference is that: at the same time, the entire allocated PDSCH frequency domain resources are only associated with one TCI state. The single DCI method based on frequency division multiplexing is to divide the entire frequency domain resources allocated for PDSCH into two parts, each of which is associated with a different TCI state.

[0099] (3) Single-DCI based FDM Scheme B. This can be abbreviated as Scheme 2B or Scheme 2b.

[0100] Similar to the solution of single DCI technology A based on frequency division multiplexing, two TRPs send the same PDSCH to the same terminal device on different frequency domain resources. The difference is that different redundant versions of the same codeword are mapped on different frequency domain resources. It should be noted that: each redundant version can be independently decoded to obtain a transport block. These two different redundant versions are sent to the terminal device by different TRPs on different frequency domain resources. The terminal device receives signals from different TRPs on the corresponding frequency domain resources, and different frequency domain resources corresponding to different TRPs are associated with different TCI states.

[0101] (4) Single-DCI based TDMScheme A: This can be referred to as Scheme 3.

[0102] Two TRPs send the same PDSCH to the same terminal device on different time domain resources. Specifically, different redundant versions of the same codeword are mapped to two different time domain resources in the same time slot (each time domain resource in a time slot consists of n consecutive symbols, and the number and position of n are configured by the network device). The two TRPs send different redundant versions of the same codeword to the terminal device through different time domain resources in the same time slot. Two different time domain resources in the same time slot are associated with different TCI states. The two time domain resources in the same time slot are separated by K symbols, and K is configured by the network device to ensure that the terminal device has sufficient configuration preparation time after receiving the signal from one TRP and before continuing to receive the signal from another TRP.

[0103] (5) Single-DCI based TDMScheme B (Single-DCI based TDMScheme B). This can be referred to as Scheme 4.

[0104] Two TRPs send the same PDSCH to the same terminal device on different time domain resources. Specifically, different redundancy versions of the same codeword are mapped to different time slots. The two TRPs send different redundancy versions of the same codeword to the terminal device through different time slots. Resources in different time slots are associated with different TCI states.

[0105] 3) CSI measurement and reporting.

[0106] CSI reporting methods may include periodic CSI reporting (P-CSI), semi-persistent CSI reporting (SP-CSI), and aperiodic CSI reporting (AP-CSI).

[0107] (1) The process of periodic CSI reporting includes: the network device configures the terminal device to perform periodic CSI reporting through high-level signaling (such as RRC signaling), and the terminal device performs channel measurement and interference measurement based on the periodic CSI-RS resources, and reports CSI on the physical uplink control channel (PUCCH) at fixed time intervals. In periodic CSI reporting, the channel measurement resource (CMR) and interference measurement resource (IMR) used for measurement are both periodic, and the specific period and resource mapping and other related parameters can be configured to the terminal device by the network device through RRC signaling. In addition, the period of CSI reporting and parameters such as the PUCCH resources used for reporting are also configured to the terminal device by the network device through RRC signaling.

[0108] (2) The process of semi-persistent CSI reporting includes: when the terminal device is configured to use semi-persistent CSI reporting, the terminal device starts CSI reporting when it receives downlink signaling sent by the network to indicate the start of CSI reporting, and stops CSI reporting after receiving downlink signaling to stop CSI reporting. Between these two downlink signaling moments, the terminal device performs periodic CSI measurement and reporting. The CMR and IMR used for semi-persistent CSI reporting can be periodic or semi-persistent. When the terminal device uses semi-persistent CSI reporting, it can report on PUCCH resources, and the network device can activate and deactivate semi-persistent CSI reporting through downlink high-layer signaling (such as MAC CE signaling); when the terminal device uses semi-persistent CSI reporting, it can also report on physical uplink shared channel (PUSCH) resources, and the network device can activate and deactivate semi-persistent CSI reporting through physical layer downlink control signaling (DCI). Regardless of whether the SP CSI measurement is performed using PUCCH or PUSCH, measurement parameters such as the measurement amount and measurement bandwidth may be configured by the network device to the terminal device through RRC signaling.

[0109] (3) Non-periodic CSI reporting.

[0110] The aperiodic CSI reporting and measurement process includes:

[0111] The network device first semi-statically configures multiple CSI reporting configuration parameters for the terminal device through downlink RRC signaling. For example, the network device triggers one or more CSI reporting configuration parameters to the terminal device through DCI, and the terminal device performs CSI measurement according to the CSI reporting configuration parameters and uses PUSCH resources to report the CSI measurement results. It should be noted that: although non-periodic CSI reporting, like semi-continuous CSI reporting, requires network device triggering, non-periodic CSI reporting does not need to be deactivated after CSI measurement and reporting are activated through DCI, and only one measurement and reporting is performed. The CMR and IMR used for non-periodic CSI reporting can be periodic, semi-continuous or non-periodic.

[0112] It should be noted that: in the above three CSI reporting schemes, the configuration parameters required in the CSI reporting process can be configured by the network device to the terminal device through RRC signaling. For example, the configuration parameters may include the reporting amount, reporting bandwidth, etc. The reporting amount may include one or more of the rank indicator (RI), channel quality indicator (CQI) PMI or precoding matrix indicator (PMI). In the NR system, the network device can complete different measurement requirements and assumed transmission modes through the configuration parameters of the CSI measurement.

[0113] The network device can configure CSI resource configuration parameters to the terminal device through high-layer signaling, such as RRC signaling, to indicate to the terminal device the resources used for measurement and reporting. For example, the resources used for measurement and reporting can be configured to the terminal device through the csi-resourceConfig field in RRC signaling. The CSI resource configuration parameters can include 1 to 3 CSI-RS resource configurations (CSI-RS resource settings).

[0114] In one example, when the CSI resource configuration parameters include one CSI-RS resource setting, the CSI-RS resource setting is used to implement beam measurement, that is, to calculate the Layer 1 Reference Signal Received Power (L1-RSRP).

[0115] In another example, when the resource configuration parameters of CSI include 2 CSI-RS resource settings, one CSI-RS resource setting includes a set of non-zero power channel state information reference signal resource sets (Non-ZeroPower Channel State Information-Reference Signal resource set, NZP CSI-RSresource set). The NZP CSI-RS resource set can be configured by the high-level parameter NZP-CSI-RS-ResourceSet. The network device can indicate to the terminal device a set of NZP CSI-RS resource sets for channel measurement in the NZP CSI-RS resource set, so that the terminal device performs channel measurement based on the NZP CSI-RS resource set indicated by the network device. Another CSI-RS resource setting includes an NZP CSI-RS resource set or a CSI interference measurement (CSI-Interference_Measurement, CSI-IM) resource set, and further, the terminal device performs interference measurement in the NZP CSI-RS resource set or the CSI-IM resource set. The CSI-IM resourceset can be configured to the terminal device by the network device through the high-level parameter CSI-IM-ResourceSet.

[0116] It should be noted that: in the above-mentioned NZP CSI-RS resource set for channel measurement indicated by the network device in the CSI-RS resource setting, n NZP CSI-RS resources may be included. When the interference measurement is based on NZP CSI-RS, n=1; and when the interference measurement is based on CSI-IM, n≥1 and n is an integer. When n≥1, the CSI-IM resource set will also include the same number of CSI-IM resources, and correspond one-to-one with the n NZP CSI-RS resources in the NZP CSI-RSresource set. The terminal device will select one NZP CSI-RS resource from the n NZP CSI-RSresources, such as the Xth NZP CSI-RS resource, and measure and report the CSI measurement results on this NZP CSI-RS resource and the corresponding CSI-IM resource. The CSI measurement result includes the reporting quantity indicated by the network device through high-layer signaling (reportQuantity, contained in the CSI reporting configuration parameter CSI-ReportConfig). When the terminal device reports the CSI measurement result, it will report the NZP CSI-RS resource indication (CSI-RS resource indicator, CRI) corresponding to the CSI measurement result, that is, used to indicate X.

[0117] In another example, when the resource configuration parameters of the CSI include three CSI-RS resource settings, the first CSI-RS resource setting includes a group of NZP CSI-RS resource sets. The network device can indicate to the terminal device an NZP CSI-RS resource set for channel measurement in a group of NZP CSI-RS resource sets, so that the terminal device performs channel measurement based on the NZP CSI-RS resource set indicated by the network device. The second CSI-RSresource setting includes a group of NZP CSI-RS resource sets; the third CSI-RS resource setting includes a CSI-IM resource set, and the terminal device performs interference measurement based on the second and third resources. The difference is that the terminal device will measure inter-user interference based on the NZP CSI-RS resource set included in the second CSI-RS resource setting, and will measure inter-cell interference based on the CSI-IM resource set included in the third CSI-RS resource setting.

[0118] 4) CSI-RS configuration.

[0119] In NR systems, channel measurements are performed on the NZP CSI-RS resource setting. The time domain transmission behavior of the NZP CSI-RS can be periodic (Periodic CSI-RS, P-CSI-RS), semi-persistent (Semi-persistent CSI-RS, SP-CSI-RS), or aperiodic (Aperiodic CSI-RS, AP-CSI-RS). For each CSI reporting, one CSI-RS resource setting can be configured for channel measurement. This CSI-RS resource setting will be configured with a type (P / SP / AP-CSI-RS), which is used to indicate the time domain transmission behavior; each CSI-RS resource setting can contain m CSI-RS resource sets. When the type of CSI-RS resource setting is P / SP-CSI-RS, m=1; when the type of CSI-RS resource setting is AP-CSI-RS, m≥1. When m≥1, for a specific CSI measurement report, the network device will select one CSI-RS resource set from m≥1 CSI-RS resource sets for the terminal device to associate with this specific CSI measurement and reporting.

[0120] It should be noted that when interference measurement is performed in the NZP CSI-RS resource setting instead of the CSI-IM resource setting, the network device configures three CSI-RS resource settings for the terminal device, or configures two CSI-RS resource settings, where the first CSI-RS resource setting is used for channel measurement and the second CSI-RS resource setting is used for interference measurement. The second CSI-RS resource setting contains a set of CSI-IM resource sets, and at most one NZP CSI-RS resource is configured in the CSI-RS resource set used for channel measurement. When interference measurement is performed in the CSI-IM resource set, n ≥ 1 NZP CSI-RS resources can be configured in the CSI-RS resource set used for channel measurement.

[0121] Interference measured based on NZP CSI-RS is multi-user interference, which refers to the mutual interference caused by non-ideal transmission parameters between multiple terminal devices scheduled simultaneously on the same time-frequency resources. Interference measured based on CSI-IM is inter-cell interference. Therefore, when performing multi-user interference measurement, the network device uses a fixed NZP CSI-RS resource set for channel measurement while simultaneously measuring interference from other terminal devices on multiple NZP CSI-RS resource sets. If the NZP CSI-RS resource set used for channel measurement contains multiple NZP CSI-RS resources, how these NZP CSI-RS resources are associated with the NZP CSI-RS resource used for interference measurement for a single CSI measurement is complex. When interference measurement is based on CSI-IM, a CSI-RS resource set can contain n ≥ 1 NZP CSI-RS resources. These different NZP CSI-RS resources can be independently configured with a transmission configuration indicator (TCI) state. Each TCI state contains quasi co-location information (QCL-Info). QCL-Info is used to inform the terminal device whether the NZP CSI-RS signal carried by the current NZP CSI-RS resource is QCL-bound with a reference signal, as well as the QCL type. The terminal device can use the channel estimation results on the reference signal configured in QCL-Info to receive and estimate the channel of the above-mentioned NZP CSI-RS signal. The specific parameters that can be used for the reception and channel estimation of the above-mentioned NZP CSI-RS signal are determined by the QCL type contained in the QCL-Info configured by the network device.

[0122] Currently, there are four types of QCLs in NR systems, as shown in Table 1.

[0123] Table 1

[0124]

[0125] From the above description of CSI measurement and reporting and CSI-RS configuration, it can be seen that the current CSI measurement and reporting are designed for a single TRP transmission mode. Specifically, when performing interference measurement based on CSI-IM, n≥1 NZP CSI-RS resources can be configured in the CSI-RS resource set used for channel measurement, and n≥1 NZP CSI-RSresources can be configured with independent TCI states, that is, these NZP CSI-RS resources can be associated with different TRPs. However, when the terminal device performs CSI reporting, the terminal device selects 1 NZP CSI-RS resource from the n≥1 NZP CSI-RS resource set, and reports the CSI measurement results obtained on the selected NZP CSI-RS resource and the associated CSI-IMresource to the network device. It can be understood that the reported CSI measurement results express the measurement results when the TRP associated with the selected NZP CSI-RS resource independently serves the terminal device.

[0126] In multi-TRP transmission mode, at least two TRPs serve the terminal device. In multi-TRP transmission mode for multiple DCI, the network device sends two DCIs to the terminal device via two TRPs. The network device configures different CSI reporting configuration information for the two different TRPs. The terminal device reports two corresponding CSI measurement results based on the CSI reporting configuration information to support multi-TRP scheduling of multiple DCIs. However, due to non-ideal channel transmission, when the network device schedules two PDSCHs using two DCIs based on two CSI measurement results corresponding to different TRPs independently measured and reported by the terminal device, the two PDSCHs may overlap in time-frequency resources. These two PDSCHs will interfere with each other, and since these two PDSCHs need to be sent to the same terminal device, the interference is significant and cannot be ignored. During the measurement process, since the two CSI reporting configuration information corresponding to different TRPs is configured independently and has no correlation, the interference between these PDSCHs is not taken into account in the CSI measurement. As a result, there is a discrepancy between the measurement and actual transmission, which can degrade system performance.

[0127] In the multi-TRP transmission mode of a single DCI, the network device sends one DCI to the terminal device to schedule the PDSCH. Different TRPs schedule different PDSCH resources, and the PDSCH resources scheduled by different TRPs can be distinguished using the spatial domain, frequency domain, or time domain. Regardless of how the PDSCH resources are distinguished, the network device only indicates one MCS (modulation and coding scheme) to the terminal device, and this MCS is determined based on the CQI in the CSI measurement results reported by the terminal device.

[0128] Current CSI measurements can only independently measure the channel state between two TRPs and the terminal device, and independently report two CSI measurement results. The CQIs included in the two CSI measurement results are estimated based on the assumption that the TRPs independently serve the terminal device. Network equipment needs to convert the two CSI measurement results reported by the terminal device into the channel state when the two TRPs simultaneously serve the terminal device, and then determine the MCS to use for multi-TRP transmission. However, this conversion process does not reflect the actual channel state between the two TRPs and the terminal device. Therefore, the MCS and other scheduling parameters determined based on the conversion results will affect system performance.

[0129] Based on this, the embodiments of the present application provide a method and apparatus for reporting channel state information to solve the problem of system performance degradation. Specifically, the embodiments of the present application provide but are not limited to the following three possible implementation methods:

[0130] A first possible implementation method is to associate different TCI-States with different port groups belonging to the same CSI-RS resource in the CSI-RS resource set configured for the terminal device, or to associate different TRPs with different port groups belonging to the same CSI-RS resource configured for the terminal device.

[0131] A second possible implementation method is to associate different TCI-States with different CSI-RS resources belonging to the same CSI-RS resource group configured for the terminal device, or to associate different TRPs with different CSI-RS resources belonging to the same CSI-RS resource group configured for the terminal device.

[0132] A third possible implementation is to associate different TRPs with different CSI reporting configurations (CSI-reportConfig) configured for the terminal device.

[0133] The first possible implementation method is described in detail below with reference to specific embodiments. Figure 2 shown.

[0134] S201: The network device sends CSI-RS resource configuration information to the terminal device.

[0135] The CSI-RS resource configuration information includes one or more CSI-RS resources. One or more CSI-RS resources belong to one or more CSI-RS resource sets, that is, a CSI-RS resource set may include one or more CSI-RS resources. The number of CSI-RS resources included in different CSI-RS resource sets may be the same or different, and the embodiments of the present application do not specifically limit this. One CSI-RS resource is associated with n TCI states, where n is an integer greater than or equal to 2. It should be noted that the number of TCI States associated with different CSI-RS resources may be the same or different.

[0136] Take the first CSI-RS resource in the CSI-RS resource set, and the first CSI-RS resource is associated with two TCIstates as an example. For the convenience of description, the two TCI states are respectively referred to as the first TCI state and the second TCI state as an example. Each port group in the multiple port groups corresponding to the first CSI-RS resource is associated with the first TCI state or the second TCIstate. As an example, the first port group in the first CSI-RS resource is associated with the first TCI state, and the second port group in the first CSI-RS resource is associated with the second TCI state. The first port group and the second port group are different port groups, that is, the ports included in the first port group are different from the ports included in the second port group, or the identifiers of the ports included in the first port group are different from the identifiers of the ports included in the second port group. The identifier of the port can be the port number of the port, or the index value of the port, or the offset value of the port in the port group. For example, in NR, the port group can be a code division multiple access (CDM) group. Port p can be represented by the following formula (1).

[0137] p=3000+s+jL;Formula (1)

[0138] in, s = 0, 1, ... L-1; s represents the offset value of the port within the CDM group, j represents the index value of the CDM group, L represents the size of the CDM group, and N represents the total number of CSI-RS ports. N is configured by the network device, and L is determined by the CSI-RS resource configuration parameters configured by the network device.

[0139] In a possible implementation, the port groups corresponding to the first CSI-RS resource may be divided. Taking the port groups as CDM groups as an example, for example, one or more port groups associated with a first TCI state in the first CSI-RS resource are referred to as a first CDM group set. One or more port groups associated with a second TCI state in the first CSI-RS resource are referred to as a second CDM group set. The first CDM group set includes one or more CDM groups including the first port group. The second CDM group set includes one or more CDM groups including the second CDM group. The first CDM group set is associated with the first TCI state, and the second CDM group set is associated with the second TCI state. There is no overlap between the CDM groups included in the first CDM group set and the second CDM group set, or in other words, the identifiers of the CDM groups in the first CDM group set and the identifiers of the CDM groups in the second CDM group set are different. The CDM group identifier may be an index value of the CDM group, or a different offset value relative to a fixed value, or a port number of a port included in the CDM group, or other identifiers used to indicate CDM, all of which are applicable to the present application. The number of CDM groups associated with the first TCI state in the first CSI-RS resource may be the same as the number of CDM groups associated with the second TCI state, to reduce the complexity of processing by the terminal device.

[0140] As an example, the identifier of the CDM group in the first CDM group set and the identifier of the CDM group in the second CDM group set can be determined by CSI-RS resource configuration information, and the CSI-RS resources included in the CSI-RS resource configuration information can meet the configuration corresponding to any row (ROW) of Table 1.

[0141] Table 1

[0142]

[0143] Among them, it can be seen from Table 1 above that different ports of NR's CSI-RS are multiplexed on the same time-frequency resources through code division multiple access (CDM). In the above configuration, cdm-Type is configured to the terminal device by the network device through downlink parameters, where CDMN-FDN1-TDN2 indicates that the total length of code division multiple access is N, where the length of frequency domain code division multiple access is N1 and the length of time domain code division multiple access is N2, where N=N1×N2, k iIndicates the starting position of the CSI-RS resource in the frequency domain. i = 0, 1, 2, 3. l0 and l1 indicate the starting position of the CSI-RS resource in the time domain, which is configured by the network device. k' represents the frequency domain offset of the time-frequency resources used by different ports within the same CDM group; l' represents the time domain offset of the time-frequency resources used by different ports within the same CDM group. FD-CDM2 indicates code division multiplexing (CDM) only in the frequency domain, with a total length of 2. noCDM indicates that CDM is not performed.

[0144] As an example, when the network device configures the association relationship between the port group of each CSI-RS resource in the CSI-RS resource set and the TCI state, the port group corresponding to the CSI-RS resource in the CSI-RS resource set can be divided in any of the following ways:

[0145] In the first approach, when the number of CDM groups included in the first CSI-RS resource is greater than one, the ports included in the first half of the CDM groups in the first CSI-RS resource are associated with the first TCI state, and the ports included in the second half of the CDM groups in the first CSI-RS resource are associated with the second TCI state. The number of ports included in the first half of the CDM groups is the same as the number of ports included in the second half of the CDM groups.

[0146] In the first example, when the number of CDM groups in the first CSI-RS resource is an even number, for example, the first CSI-RS resource includes J CDM groups, where J is an integer greater than 1; the first CDM group set associated with the first TCI state includes J1 CDM groups, and the J1 CDM groups are the 1st CDM group to the J1th CDM group among the J CDM groups; the second CDM group set associated with the second TCI state includes J1 CDM groups, and the J1 CDM groups are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, where J1=J / 2.

[0147] For example, the CDM group index can be used to determine the CDM group associated with different TCI states. For example, if the index number starts from 0, when J is an even number, the J CDM group index numbers are 0 to J-1. The ports in the CDM group are associated with the first TCI state, and the CDM group index is The ports in the CDM group to J-1 are associated with the second TCI state.

[0148] In the second example, when the number of CDM groups in the first CSI-RS resource is an odd number, the first CSI-RS resource is still taken as an example including J CDM groups, where J is an odd number greater than 1. The first CDM group set associated with the first TCI state includes J1 CDM groups, where the J1 CDM groups are the 1st CDM group to the J1th CDM group among the J CDM groups. The second CDM group set associated with the second TCI state includes J1 CDM groups, where the J1 CDM groups are the J-J1th CDM group to the J-1th CDM group among the J CDM groups. For example, J=5, the first CDM group and the second CDM group are associated with the first TCI state, and the third and fourth CDM groups are associated with the second TCI state.

[0149] For example, the CDM group index can be used to determine the CDM group associated with different TCI states. For example, if the index number starts from 0, when J is an odd number, the CDM group index is 0 to The ports in the CDM group are associated with the first TCI state, and the CDM group index is The ports in the CDM group to J-1 are associated with the second TCIstate.

[0150] In a third example, when the number of CDM groups in the first CSI-RS resource is an odd number, the first CSI-RS resource is still taken as an example including J CDM groups, where J is an odd number greater than 1. The first CDM group set associated with the first TCI state includes J1 CDM groups, where the J1 CDM groups in the first CDM group set are the 2nd CDM group to the J1+1th CDM group among the J CDM groups. The second CDM group set associated with the second TCI state includes J1 CDM groups, where the J1 CDM groups in the second CDM group set are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups. For example, J=5, the second CDM group and the third CDM group are associated with the first TCI state, and the fourth and fifth CDM groups are associated with the second TCI state.

[0151] For example, the CDM group index can be used to determine the CDM group associated with different TCI states. For example, if the index number starts from 0, when J is an odd number, the CDM group index is 1 to The ports in the CDM group are associated with the first TCI state, and the CDM group index is The ports in the CDM group to J-1 are associated with the second TCI state.

[0152] In a fourth example, when the number of CDM groups in the first CSI-RS resource is an odd number, still taking the example of the first CSI-RS resource including J CDM groups, J is an odd number greater than 1. The first CDM group set associated with the first TCI state includes J1 CDM groups, and the J1 CDM groups in the first CDM group set are the 1st CDM group to the J1th CDM group among the J CDM groups. The second CDM group set associated with the second TCI state includes J1 CDM groups, and the J1 CDM groups included in the second CDM group set are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups. For example, if J=5, the first and second CDM groups are associated with the first TCI state, and the fourth and fifth CDM groups are associated with the second TCI state. For example, the CDM group index can be used to determine the CDM groups associated with different TCI states. For example, if the index number starts from 0, when J is an odd number, the CDM group index is 0 to The ports in the CDM group are associated with the first TCI state, and the CDM group index is The ports in the CDM group to J-1 are associated with the second TCI state.

[0153] In the second approach, when the number of port groups included in a CSI-RS resource is odd, the CSI-RS is associated with only one TCI state. When the number of port groups included in a CSI-RS resource is even, the CSI-RS resource can be associated with two TCI states. In this approach, still taking the first CSI-RS resource as an example, the number of port groups included in the first CSI-RS resource is even, and can be associated in a manner similar to the CDM group in the first example above.

[0154] As an example, a CSI-RS resource associated with two TCI states can adopt any one of the configurations under Row = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18} in Table 1. A CSI-RS resource associated with one TCI state can adopt any one of the configurations in Table 1. The configuration under Row = {1, 2, 3} in Table 1 can only be associated with one TCI state. The main reasons are as follows: the number of ports of the NR CSI-RS resource corresponding to Row = 1 and 2 is 1, which obviously cannot meet the requirement of configuring two TCI states; and the number of ports of the CSI-RS resource corresponding to Row = 3 is 2, but these two ports are multiplexed on the same time-frequency resource through orthogonal masking. If the two ports are associated with different TCI states, the orthogonality will be destroyed, and strong interference will be generated between the two ports, affecting the performance of channel estimation. Therefore, in this embodiment of the present application, the CSI-RS resource corresponding to Row = 3 is only associated with one TCI state. The CSI-RS resources associated with two TCI states may be associated with different TCI states in any possible manner from the first example to the fourth example.

[0155] In the third approach, the time-frequency resources corresponding to the port groups associated with different TCI states in the CSI-RS resources associated with two TCI states are located in different time units. The time unit can be a time slot, a symbol, or a mini-slot, etc.

[0156] As an example, in this approach, the CSI-RS resources associated with two TCI states can use any of the configurations in Row = {5, 7, 11, 13, 14, 16, 17} in Table 1. Because the NR system operating frequency band includes the millimeter wave band, to combat severe large-scale fading, network equipment and terminal devices need to use analog precoding at the radio frequency, that is, use phased arrays to implement analog beamforming. However, due to cost constraints, terminal devices often do not have the ability to simultaneously use two different analog beams to receive two signals. In the CSI-RS resources associated with Row = {4, 6, 8, 9, 10, 12, 15, 18}, the resources used by different ports are located on the same symbol. In this case, the terminal device may be required to support the simultaneous use of two different analog beams to receive two signals. Therefore, the CSI-RS resources associated with two TCI states do not need to use the configuration in Row = {4, 6, 8, 9, 10, 12, 15, 18}. In any CSI-RS resource associated with Row={5,7,11,13,14,16,17}, taking the number of port groups included in the CSI-RS resource as J as an example, the CDM group index is 0 to The time and frequency resources mapped by the ports in the CDM group are the same as the CDM group index. The time-frequency resources mapped to the ports in the CDM group of J-1 are on different symbols.

[0157] In the fourth method, when the QCL type included in any one of the two TCI states associated with a CSI-RS resource includes Type D, the time-frequency resources corresponding to the port groups associated with different TCI states in the CSI-RS resources associated with the two TCI states are located on different time units. The method of associating different TCI states with different port groups of the CSI-RS resources associated with two TCI states can refer to the relevant description in the first method and will not be repeated here. As an example, in this method, when the QCL type included in any one of the two TCI states includes Type D, the CSI-RS resources associated with the two TCI states can adopt any one of the configurations under Row = {5, 7, 11, 13, 14, 16, 17} in Table 1. When the QCL types included in the two TCI states do not include Type D, the CSI-RS resources associated with the two TCI states can adopt any configuration under Row = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18} in Table 1.

[0158] When the QCL type included in the TCI state does not include Type D, Type D is used to indicate the reception of an analog beam. If the QCL type in the TCI state does not include Type D, the terminal device can use the same analog beam, or in the low-frequency band, the terminal device does not need to use different analog beams to receive signals on different ports within the CSI-RS resource. Based on this, there is no restriction on the time-frequency resources mapped to the port groups associated with different TCIs being located in different time units. That is to say, when the QCL type included in both TCI states does not include Type D, the time-frequency resources corresponding to the port groups associated with different TCI states in the CSI-RS resources associated with the two TCIstates can be located in the same time unit or different time units.

[0159] In the fifth method, the time-frequency resources corresponding to the port groups associated with different TCI states in the CSI-RS resources associated with two TCI states are located in different time units, and the time-frequency resources corresponding to the port groups associated with different TCI states are not adjacent in the time domain. Since the time-frequency resources corresponding to the port groups associated with different TCI states are adjacent in the time domain, the switching requirements of the simulated beam may not be met. The method of associating different port groups of the CSI-RS resources associated with two TCI states with different TCI states can adopt the method described in the first method.

[0160] As an example, in this manner, the CSI-RS resources associated with two TCI states may adopt any one of the configurations under Row = {13, 14, 16, 17} in Table 1. Among them, the resources used by different ports in the CSI-RS resources associated with Row = {4, 6, 8, 9, 10, 12, 15, 18} are located on the same symbol, and the CSI-RS resources do not meet the requirement that the time-frequency resources corresponding to the port groups associated with different TCI states are located in different time units. For details, please refer to the relevant description in the third manner. Therefore, the CSI-RS resources associated with two TCI states may not adopt the configuration under Row = {4, 6, 8, 9, 10, 12, 15, 18}.

[0161] In this mode, the CSI-RS resource corresponding to Row = {5, 7, 11} is associated with only one TCI state. For example, the number of port groups included in any CSI-RS resource corresponding to Row = {5, 7, 11} is J. In the CSI-RS resource corresponding to Row = {5, 7, 11}, the CDM group index is 0 to The time and frequency resources mapped by the ports in the CDM group are the same as the CDM group index. The time-frequency resources mapped to the ports in the CDM group from 0 to J-1 are on different symbols, but are adjacent in the time domain, that is, the CDM group index is 0 to The symbol where the time-frequency resource mapped by the port in the CDM group is l0, and the CDM group index is The symbol where the time-frequency resource mapped to the port in the CDM group from J-1 is located is l0+1. At this time, if the QCL type contained in any of the two TCI states includes Type-D, then the terminal device needs to use another analog beam immediately after receiving the orthogonal frequency division multiplexing (OFDM) signal in symbol l0, and receive the new OFDM signal on the next symbol l0+1. Even if only considering the operation of adding a cyclic prefix (CP) to the OFDM signal on each symbol, it is very challenging for some terminal devices to complete the switching of analog beams within one CP duration. The time-frequency resources corresponding to the port groups associated with different TCI states in the CSI-RS resources associated with the two TCI states are not adjacent in the time domain, which can adapt to the terminal device's switching needs for analog beams. More specifically, since the CDM group index is 0 to The time-frequency resources mapped by the ports in the CDM group may occupy multiple consecutive OFDM symbols. The same CDMgroup index is The time-frequency resources mapped to the ports in the CDM group from J-1 to J-1 may occupy multiple consecutive OFDM symbols. Therefore, in order to meet the switching requirements of the terminal device for analog beams, the CDM group index is 0 to The last OFDM symbol corresponding to the time-frequency resource mapped by the port in the CDMgroup is The first OFDM symbols corresponding to the time-frequency resources mapped to the ports in the CDM group of J-1 are not adjacent.

[0162] In the sixth method, when the QCL type included in any of the two TCI states associated with a CSI-RS resource includes Type D, the time-frequency resources corresponding to the port groups associated with different TCI states in the CSI-RS resources associated with the two TCI states are located in different time units and are not adjacent in the time domain.

[0163] As an example, in this manner, when the QCL type included in any of the two TCI states includes Type D, the CSI-RS resources associated with the two TCI states may adopt any one of the configurations under Row = {13, 14, 16, 17} in Table 1. Among them, the resources used by different ports in the CSI-RS resources associated with Row = {4, 6, 8, 9, 10, 12, 15, 18} are located on the same symbol, and the CSI-RS resources do not meet the requirement that the time-frequency resources corresponding to the port groups associated with different TCI states are located in different time units. For details, please refer to the relevant description in the third manner. Therefore, the CSI-RS resources associated with the two TCI states may not adopt the configuration under Row = {4, 6, 8, 9, 10, 12, 15, 18}. The CSI-RS resources configured with Row = {5, 7, 11} do not meet the requirement that the time-frequency resources corresponding to different port groups are located in different time units and are not adjacent in the time domain. Therefore, the CSI-RS resources associated with two TCI states do not need to use the configuration under Row = {5, 7, 11}. For detailed explanations, please refer to the relevant description of the fifth method and will not be repeated here.

[0164] In the seventh method, when the QCL type included in any of the two TCI states associated with a CSI-RS resource includes Type D, the time-frequency resources corresponding to the port groups associated with different TCI states in the CSI-RS resources associated with the two TCI states are located in different time units, and the number of time units separated in the time domain is greater than or equal to the capability parameter reported by the terminal device. The capability parameter reported by the terminal device can be used to indicate the delay required for the simulated switching beam. The capability parameter reported by the terminal device can be a parameter reported independently by the terminal device, or a capability parameter specified in an existing protocol can be used. For example, the capability parameter FG2-28 A-CSI-RS beam switching timing in NR, through which the network device can obtain the minimum time interval between downlink control information (DCI) and obtaining AP-CSI-RS. Since the terminal device may use an analog beam to receive the DCI and AP-CSI-RS sent by the network device, and different analog beams are used between the reception of these two signals, a certain delay is required for beam switching, so that after receiving the DCI, there is enough time to switch the analog beam for receiving AP-CSI-RS.

[0165] As an example, in this method, when the QCL type included in any of the two TCI states includes Type D, the CSI-RS resources associated with the two TCI states can adopt any configuration under Row = {13, 14, 16, 17} in Table 1. Because the CSI-RS resources associated with Row = {4, 6, 8, 9, 10, 12, 15, 18} do not meet the requirement that the time-frequency resources corresponding to the port groups associated with different TCI states are located in different time units, for details, please refer to the relevant description in the third method. Therefore, the CSI-RS resources associated with the two TCI states may not adopt the configuration under Row = {4, 6, 8, 9, 10, 12, 15, 18}. The CSI-RS resources configured as Row = {5,7,11} do not meet the requirement that the time-frequency resources corresponding to different port groups are located in different time units and the time domain interval is greater than or equal to the capability parameter reported by the terminal device. Therefore, the CSI-RS resources associated with two TCI states may not use the configuration under Row = {5,7,11}. More specifically, since the CDM group index is 0 to The time-frequency resources mapped by the ports in the CDM group may occupy multiple consecutive OFDM symbols. The same CDM group index is The time-frequency resources mapped to the ports in the CDM group from J-1 to J-1 may occupy multiple consecutive OFDM symbols. Therefore, in order to meet the switching requirements of the terminal device for analog beams, the CDM group index is 0 to The last OFDM symbol corresponding to the time-frequency resource mapped by the port in the CDM group is The interval between the first OFDM symbols corresponding to the time-frequency resources mapped to the ports in the CDM group of J-1 meets the requirement that it is greater than or equal to the capability parameter reported by the terminal device. For specific explanations, please refer to the relevant description in the fifth method and will not be repeated here.

[0166] Since there is no restriction on the CSI-RS resources associated with a TCI state, in any of the above methods, the CSI-RS resources associated with a TCI state can adopt the configuration of any row in Table 1.

[0167] In another possible implementation, when the network device configures the association relationship between different port groups and two TCI states in the same CSI-RS resource, the ports associated with different TCI states can be set according to the CDM group as described above, or can be directly determined according to the port identifier.

[0168] As an example, taking the first CSI-RS resource as an example, the ports corresponding to the first CSI-RS resource with odd-numbered port identifiers constitute a first port group, which is associated with the first TCI state; the ports with even-numbered port identifiers constitute a second port group, which is associated with the second TCI state.

[0169] As another example, taking the first CSI-RS resource as an example, the subset of the port group consisting of ports with odd port identifiers among the ports corresponding to the first CSI-RS resource is the first port group, and the first port group is associated with the first TCI state; the subset of the port group consisting of ports with even port identifiers is the second port group, and is associated with the second TCI state; further, the configuration of the ports in the subset can be configured to the terminal device by the network device.

[0170] S202: After receiving the CSI-RS resource configuration information from the network device, the terminal device performs CSI measurement according to the CSI-RS resource configuration information.

[0171] S203: The terminal device reports the CSI to the network device.

[0172] The CSI can be measured by the terminal device on each CSI-RS resource according to the CSI-RS resource set configured by the network device.

[0173] In one possible approach, the CSI may include two parts. The first part includes the best measurement result obtained by the terminal device when measuring CSI-RS resources associated with one TCI state in the CSI-RS resource set. The second part includes the best measurement result obtained by the terminal device when measuring CSI-RS resources associated with two TCI states in the CSI-RS resource set.

[0174] As an example, a CSI-RS resource set includes K CSI-RS resources, K1 of the K CSI-RS resources are associated with one TCI state, and the remaining K-K1 CSI-RS resources are associated with two TCI states. For example, if the K-K1 CSI-RS resources include a first CSI-RS resource, and the measurement value obtained by measuring the first CSI-RS resource is optimal, the CSI includes a first CSI parameter measured by the first CSI-RS resource. If the K1 CSI-RS resources include a second CSI-RS resource, and the measurement value obtained by measuring the second CSI-RS resource is optimal, the CSI also includes a second CSI parameter measured by the second CSI-RS resource. In addition to CRI, the measurement quantities included in the CSI reported by the terminal device may also include rank indication (RI), precoding matrix indicator (PMI), channel quality indicator (CQI), wideband PMI (i1), layer indicator (LI), synchronization signal block index (SSB Index), layer 1 reference signal received power (L1-RSRP), layer 1 reference signal received power (L1-RSRP), layer 1 reference signal received quality (L1-RSRQ), etc. The measurement quantities included in the first CSI parameter include one or more of CRI, PI, PMI, CQI, SSB index, LI, L1-RSRP or L1-RSRQ. The measurement quantities included in the second CSI parameter include one or more of CRI, PI, PMI, CQI, SSB index, LI, L1-RSRP or L1-RSRQ. For ease of distinction, the CRI included in the first CSI parameter is referred to as a first CRI, and the CRI included in the second CSI parameter is referred to as a second CRI.For example, the first CSI parameter includes a first CSI-RS resource indicator (CSI-RS resource indicator, CRI), the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and the first CSI parameter includes other CSI parameters (such as RI, PMI, CQI, LI, L1-RSRP, or L1-RSRQ) in addition to the first CRI, and the other CSI parameters are measured on the first CSI-RS resource. The second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and the second CSI parameter includes other CSI parameters (such as RI, PMI, CQI, SSB index, LI, L1-RSRP, or L1-RSRQ) in addition to the second CRI, and the other CSI parameters are all measured on the second CSI-RS resource.

[0175] The CSI reported by the terminal device in the embodiment of the present application includes two parts. When the terminal device measures CSI based on a CSI-RS resource associated with two TCIstates, it actually assumes that two TRPs serve it at the same time, which can obtain a better CSI measurement result. When multi-TRP scheduling is adopted, interference between transmissions of different TRPs is prevented. Moreover, the measurement result assuming that two TRPs serve the terminal device at the same time can better reflect the overall channel state between the two TRPs and the terminal device, thereby improving system performance. The terminal device also measures CSI on a CSI-RS resource associated with one TCI-state, which can reflect the channel state between one TRP and the terminal device, thereby increasing the possibility of the terminal device adopting single TRP scheduling.

[0176] In another possible embodiment, the CSI may include a portion. The CSI includes the best measurement result obtained by the terminal device when measuring a CSI-RS resource in a CSI-RS resource set. The best measurement result may be a CSI measurement result on a CSI-RS resource associated with one TCI-state, or a CSI measurement result obtained when measuring a CSI-RS resource associated with two TCI states.

[0177] It should be noted that the way in which the terminal device performs CSI measurement and reports CSI is related to the transmission mode, and the transmission mode includes: a multi-TRP transmission mode based on a multi-DCI mode (mDCI mTRP), a single DCI multi-TRP Scheme 1a, Scheme 2a, Scheme 2b, Scheme 3 or Scheme 4, or more. In the embodiment of the present application, different CSI-RS resources may adopt the same CSI measurement and CSI reporting method, or may adopt different CSI measurement and CSI reporting methods, that is, different CSI-RS resources may correspond to different transmission modes, or correspond to different transmission modes.

[0178] As an optional implementation, before step S202, the network device may send mode indication information to the terminal device. Take the CSI-RS resource set including N CSI-RS resources as an example. The mode indication information is used to indicate that each of the N CSI-RS resources included in the CSI-RS resource set is associated with one of the M transmission modes. The M transmission modes may include mDCI mTRP, single DCI multi-TRP Scheme 1a, Scheme 2a, Scheme 2b, Scheme 3 or M of Scheme 4. N is an integer greater than 1, and M is a positive integer less than or equal to N.

[0179] In one possible manner, the mode indication information may be included in the CSI-RS reporting configuration information. Specifically, the network device sends the CSI-RS reporting configuration information to the terminal device, where the CSI-RS reporting configuration information includes the mode indication information.

[0180] In another possible manner, the network device may send the mode indication information to the terminal device through separate RRC signaling.

[0181] Different CSI-RSs in the N CSI-RS resources in the CSI-RS resource set may adopt the same transmission mode, or different CSI-RSs in the N CSI-RS resources may adopt different transmission modes.

[0182] In one example, the transmission mode adopted by N CSI-RS resources is the same. The mode indication information may include an indication, which is referred to as indication 1 for the convenience of description. Indication 1 is used to indicate the identifier of the transmission mode commonly adopted by N CSI-RS resources. For example, the identifier of the transmission mode may be the index value of the transmission mode or the name of the transmission mode. When the terminal device performs CSI measurement on all CSI-RS resources in the CSI-RS resource set associated with the CSI, the CSI measurement and reporting are performed according to the transmission mode indicated by the transmission mode information.

[0183] In another example, the pattern indication information is only used to indicate the transmission mode corresponding to the CSI-RS resources associated with two TCI states. In one case, the transmission modes corresponding to different CSI-resources associated with the two TCI states are the same, and the pattern indication information may include an indication, referred to as indication 1, which is used to indicate the transmission mode corresponding to the CSI-RS resources associated with the two TCI states in the N CSI-RS resources. In another case, the transmission modes corresponding to different CSI-resources associated with the two TCI states may be different. As an example, the number of CSI-RS resources associated with the two TCI states in the N CSI-RS resources is n1, and the pattern indication information may include n1 indications, and the n1 indications correspond one-to-one to the n1 CSI-RS resources. For example, the arrangement order of the n1 indications in the pattern indication information corresponds one-to-one to the order of the n1 CSI-RS resources in the CSI-RS set. Taking n1=2 as an example, the arrangement order of the two CSI-RS resource IDs is {csiResourceID1, csiResourceID2}. The two transmission modes of indication 1 and indication 2 are txMode1 and txMode2 respectively. The order of the two transmission modes in the mode indication information is {txMode1, txMode2}. It is determined that the CSI-RS resource corresponding to csiResourceID1 is associated with txMode1, and the CSI-RS resource corresponding to csiResourceID2 is associated with txMode2. For another example, the mode indication information may include an association relationship between n1 CSI-RS resources and the transmission mode corresponding to the CSI-RS, and the mode indication information includes {csiResourceID1, txMode1} and {csiResourceID2, txMode2}.

[0184] In another example, the transmission modes corresponding to the CSI-RS resources associated with one TCI state among the N CSI-RS resources are the same, and the transmission modes corresponding to the CSI-RS resources associated with two TCI states among the N CSI-RS resources are the same. The transmission mode corresponding to the CSI-RS resources associated with one TCI state among the N CSI-RS resources is different from the transmission mode used by the CSI-RS resources associated with two TCI states. In this case, the mode indication information may include indication 1 and indication 2, where indication 1 is used to indicate the transmission mode corresponding to the CSI-RS resources associated with one TCI state, and indication 2 is used to indicate the transmission mode corresponding to the CSI-RS resources associated with two TCI states. The two transmission modes of indication 1 and indication 2 are txMode1 and txMode2, respectively. txMode1 and txMode2 may be included in the mode indication information in the order: {txMode1, txMode2}, or {txMode2, txMode1}.

[0185] In another example, the mode indication information includes N indications, and the N indications correspond to the N CSI-RS resources in the CSI-RS resource set in sequence. For example, the CSI-RS resource set includes 4 CSI-RS resources, and the 4 CSI-RS resource IDs are {csiResourceID1, csiResourceID2, csiResourceID3, csiResourceID4}. The 4 CSI-RS resource transmission modes indicated by the mode indication information are {txMode1, txMode2, txMode3, txMode4}, respectively. Then, the CSI-RS resource corresponding to csiResourceID1 is associated with txMode1, and the CSI-RS resource corresponding to csiResourceID2 is associated with txMode2, the CSI-RS resource corresponding to csiResourceID3 is associated with txMode3, and the CSI-RS resource corresponding to csiResourceID4 is associated with txMode4. It should be noted that, in this example, the transmission modes corresponding to the N CSI-RS resources may be the same or different, or the transmission modes corresponding to some of the N CSI-RS resources may be the same.

[0186] In another example, the network device may determine the number of indications included in the mode indication information based on the number of types of transmission modes corresponding to the N CSI-RS resources. For example, when the transmission modes corresponding to the N CSI-RS resources are all the same, the mode indication information includes only one indication for indicating the same transmission mode. When the transmission modes corresponding to the N CSI-RS resources are not all the same, the mode indication information may include N indications, each of which is used to indicate the transmission mode of the N CSI-RS resources.

[0187] In another example, when the mode indication information is used to indicate the transmission mode corresponding to the CSI-RS resource associated with two TCI states, the network device may determine the number of indications included in the mode indication information based on the number of types of transmission modes corresponding to the CSI-RS resources associated with two TCI states in the N CSI-RS resources. For example, when n1 CSI-RS resources among the N CSI-RS resources are associated with two TCI states, and the transmission modes corresponding to the n1 CSI-RS resources are all the same, the mode indication information may include only one indication for the same transmission mode. When the transmission modes corresponding to the n1 CSI-RS resources are not all the same, the mode indication information may include n1 indications, and the n1 indications are respectively used to indicate the transmission modes corresponding to the n1 CSI-RS resources associated with the two TCI states.

[0188] It should be noted that in CSI measurement, it is necessary to select an appropriate PMI. The selection process is to determine the received signal interference noise ratio (SINR) based on the candidate PMI, and calculate the received data rate based on the SINR. The received data rates corresponding to each candidate PMI are compared, and the reported PMI is the PMI that can achieve the highest received data rate among the measured PMIs. The CQI is the quantized value of the received SINR corresponding to the reported PMI. RI is used to indicate the number of valid data layers of the PDSCH. RI is used to inform the network equipment of the number of codewords (CWs) currently supported by the terminal device.

[0189] The following uses mDCI mTRP and Scheme 2a / 2b as examples to describe the process of performing CSI measurement under different transmission mode assumptions. Figure 3 As shown, two TRPs are taken as an example, namely TRP1 and TRP2.

[0190] First, the method of performing CSI measurement in the mDCI mTRP mode is described.

[0191] The terminal device receives the CSI-RS resources from TRP1 and TRP2 respectively through the CSI-RS resource configuration information, and estimates the corresponding channel matrices H1 and H2 respectively. When estimating PMI1 (information used to indicate the optimal precoding matrix when TRP1 is transmitted) and PMI2 (information used to indicate the optimal precoding matrix when TRP2 is transmitted), the SINR1 corresponding to the received TRP1 refers to formula (2), and the SINR2 corresponding to the received TRP2 refers to formula (3).

[0192]

[0193]

[0194] Where P1 and P2 represent the precoding matrices corresponding to candidate PMI1 and PMI2, respectively, and I represents other interference. In the above formulas (2) and (3), the signal from TRP1 is an interference signal for TRP2 signal reception. Therefore, when calculating TRP2's SINR2, the signal from TRP1 needs to be considered as interference. Similarly, the signal from TRP2 is also an interference signal for TRP1 signal reception. Therefore, when calculating TRP1's SINR1, the signal from TRP2 needs to be considered as interference. After calculating the SNR of the two TRPs on each CSI-RS resource, the received data rates of the two TRPs can be further determined, thereby obtaining the PMI with the highest received data rate for each TRP, and then determining the CQI. The optimal PMI, CQI, and RI are obtained for each TRP.

[0195] Next, the method of performing CSI measurement in Scheme 2a / 2b mode is described.

[0196] When estimating PMI1 and PMI2, a received SINR is measured on a CSI-RS resource and can be determined using the following formula (4):

[0197]

[0198] In the above formula, the signals from TRP1 and TRP2 are both useful signals, not interference.

[0199] From the above analysis, it can be seen that when different transmission modes are assumed, the CSI estimation method is different.

[0200] After determining the transmission mode of each CSI-RS resource in the CSI-RS resource set, the terminal device performs CSI measurement on the CSI-RS resources included in the CSI-RS resource set according to the transmission mode and reports the CSI to the network device. The CSI parameters included in the reported CSI are related to the transmission mode.

[0201] As an example, see Table 2, which describes CSI parameters included in the reported CSI corresponding to different transmission modes.

[0202] Table 2

[0203] Sending Mode Reported CSI parameters mDCI mTRP 1 CRI, 2 RIs, 2 PMIs, 2 CQIs sDCI mTRP / Scheme 1a 1 CRI, 2 RIs, 2 PMIs, 1 CQI Scheme 2a / Scheme 2b / Scheme 3 / Scheme 4 1 CRI, 1 RI, 2 PMIs, 1 CQI

[0204] In addition to the terminal device being able to determine which measurement quantities (or CSI parameters) are included in the CSI reported by the terminal device based on the transmission mode, as another possible implementation, the network device may also indicate to the terminal device which measurement quantities are included in the CSI reported by the terminal device.

[0205] In one example, a network device may send a first configuration parameter and a second configuration parameter to a terminal device, where the first configuration parameter indicates a measurement quantity of a CSI-RS resource associated with one TCI state in a CSI-RS resource set, and the second configuration parameter indicates a measurement quantity of a CSI-RS resource associated with two TCI states in a CSI-RS resource set. For example, the first configuration parameter may also be referred to as reportQuantity, and the second configuration parameter may also be referred to as reportQuantityExt.

[0206] In another example, the network device sends a third configuration parameter to the terminal device, and the first part of the field in the third configuration parameter is used to indicate the measurement quantity of the CSI-RS resource associated with one TCI state in the CSI-RS resource set, and the second part of the field in the third configuration parameter is used to indicate the measurement quantity of the CSI-RS resource associated with two TCI states in the CSI-RS resource. The third configuration parameter may also be referred to as reportQuantity. For example, the first part of the field and the second part of the field do not overlap and constitute the third configuration parameter. For another example, the second part of the field includes the first part of the field, such as the second part of the field may be the entire third configuration information, and the first part of the field is part of the third configuration parameter. For example, if reportQuantity = 'CRI-RI-PMI-CQI-PMI', the measurement quantity in the CSI-RS resource associated with one TCI state in the associated CSI-RS resource set is 'CRI–RI-PMI-CQI', and the measurement quantity in the CSI-RS resource associated with two TCI states in the CSI-RS resource set is 'CRI–RI-PMI-CQI-PMI'. This can be understood as reporting two PMIs: one CRI, one RI, and one CQI.

[0207] The second possible implementation is described in detail below with reference to specific embodiments. Different CSI-RS resources belonging to the same CSI-RS resource group configured for a terminal device are associated with different TCI-States, or different CSI-RS resources belonging to the same CSI-RS resource group configured for a terminal device are associated with different TRPs. Figure 4 shown.

[0208] S401, the network device sends CSI-RS resource configuration information to the terminal device. The CSI-RS resource configuration information includes a CSI-RS resource set for channel measurement, and the CSI-RS resource set for channel measurement includes one or more CSI-RS resources. The CSI-RS resources in the CSI-RS resource set can be located in different CSI-RS resource groups, or in the same CSI-RS resource group. The CSI-RS resources included in the CSI-RS resource group can be associated with different TCI-states. Take the example that the CSI-RS resource set includes the first CSI-RS resource group. The first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with a first transmission configuration indication state, the second CSI-RS resource is associated with a second transmission configuration indication state, and the first CSI-RS resource is associated with the second CSI-RS resource. There is an association relationship (or called a binding relationship) between the first CSI-RS resource and the second CSI-RS resource. The CSI-RS resources with a binding relationship are CSI-RS resources allocated to a terminal device for communicating with multiple TRPs in a multi-TPR scenario, or the binding relationship is used to indicate that CSI measurement is performed jointly on two CSI-RS resources with a binding relationship.

[0209] As an example, the first CSI-RS resource group may further include other CSI-RS resources associated with the first TCI state. The first CSI-RS resource group may further include other CSI resources associated with the second TCI state.

[0210] In a possible implementation, the binding relationship between the above-mentioned different CSI-RS resources may be indicated to the terminal device by the network device.

[0211] In one example, the network device can indicate the binding relationship between the CSI-RS resources included in the CSI-RS resource group to the terminal device in the form of a bitmap. The length of the bitmap is equal to the number of CSI-RS resources included in the CSI-RS resource set, and each bit in the bitmap is associated with each CSI-RS resource in the CSI-RS resource set in sequence. The CSI-RS resources whose corresponding bit values ​​are set values ​​have a binding relationship to form a CSI-RS resource group. For example, a CSI-RS resource set contains 4 CSI-RS resources, namely {csiRSResource1, csiRSResource2, csiRSResource3, csiRSResource4}. Taking the set value of 1 as an example, the bitmap configured by the network device to the terminal device is '0011', which means that csiRSResource3 and csiRSResource4 have a binding relationship. For another example, if the bitmap configured by the network device to the terminal device is '1111', it means that there is a binding relationship between the CSI-RS resources associated with different TCI states in csiRSResource1, csiRSResource2, csiRSResource3, and csiRSResource4. For example, if csiRSResource1 and csiRSResource2 are both associated with the first TCI state, and csiRSResource3 and csiRSResource4 are both associated with the second TCI state, then there is a binding relationship between csiRSResource1 and csiRSResource3, a binding relationship between csiRSResource2 and csiRSResource4, a binding relationship between csiRSResource1 and csiRSResource4, and a binding relationship between csiRSResource2 and csiRSResource3.

[0212] In another example, the CSI-RS resource configuration information sent by the network device to the terminal device includes a signal element for indicating a binding relationship. The signal element includes an identifier of a CSI-RS resource with a binding relationship. For example, a CSI-RS resource set includes 4 CSI-RS resources, namely {csiRSResource1, csiRSResource2, csiRSResource3, csiRSResource4}. The signal element may include {csiRSResourceID1, csiRSResourceID2}, which means that csiRSResource1 and csiRSResource2 have a binding relationship. For another example, a CSI-RS resource set contains 6 CSI-RS resources, namely {csiRSResource1, csiRSResource2, csiRSResource3, csiRSResource4, csiRSResource5, csiRSResource6}. The information element may include {csiRSResourceID1, csiRSResourceID2} and {csiRSResourceID5, csiRSResourceID6}, which indicates that csiRSResource1 and csiRSResource2 have a binding relationship, and csiRSResource5 and csiRSResource6 have a binding relationship.

[0213] In another example, two CSI-RS resources with a binding relationship constitute a CSI-RS resource group, and the CSI-RS resource set may include one or more CSI-RS resource groups. Those CSI-RS resources that do not constitute a CSI-RS resource group are used in a single TRP scenario. For example, a CSI-RS resource set contains 6 CSI-RS resources, namely {csiRSResource1, csiRSResource2, csiRSResource3, csiRSResource4, csiRSResource5, csiRSResource6}. csiRSResource1 and csiRSResource2 are included in one CSI-RS resource group and are associated with different TCI states respectively; csiRSResource5 and csiRSResource6 are included in another CSI-RS resource group and are associated with different TCI states respectively. csiRSResource3 and csiRSResource4 have no binding relationship with other CSI-RS resources and are only used in a single TRP scenario.

[0214] In a possible implementation, when the network device configures the association relationship between different CSI-RS resources and TCI states in a CSI-RS resource group, any of the following methods may be used:

[0215] In a first possible example, different CSI-RS resources in a binding relationship in a CSI-RS resource group occupy different time units. Taking the first CSI-RS resource group as an example, the first CSI-RS resource and the second CSI-RS resource in the first CSI-RS resource group occupy different time units.

[0216] In a second possible example, when the QCL Type of any TCI state associated with different CSI-RS resources in a binding relationship in a CSI-RS resource group includes Type D, the different CSI-RS resources in the binding relationship occupy different time units. Taking the first CSI-RS resource group as an example, when the first TCI state associated with the first CSI-RS resource or the second TCI state associated with the second CSI-RS resource includes Type D, the first CSI-RS resource and the second CSI-RS resource in the first CSI-RS resource group occupy different time units.

[0217] In a third possible example, different CSI-RS resources in a binding relationship in a CSI-RS resource group occupy different time units and are not adjacent in the time domain. Taking the first CSI-RS resource group as an example, the first CSI-RS resource and the second CSI-RS resource in the first CSI-RS resource group occupy different time units and are not adjacent in the time domain.

[0218] In a fourth possible example, when the QCL Type of any TCI state associated with different CSI-RS resources with a binding relationship in the CSI-RS resource group includes Type D, the different CSI-RS resources with a binding relationship occupy different time units and are not adjacent in the time domain.

[0219] In a fifth possible example, different CSI-RS resources with a binding relationship in a CSI-RS resource group occupy different time units, and the number of time units separated in the time domain is greater than or equal to the capability parameter reported by the terminal device.

[0220] In the sixth possible example, when the QCL Type of any TCI state associated with different CSI-RS resources with a binding relationship in the CSI-RS resource group includes Type D, the different CSI-RS resources with a binding relationship occupy different time units, and the number of time units separated in the time domain is greater than or equal to the capability parameter reported by the terminal device.

[0221] S402: After receiving the CSI-RS resource configuration information, the terminal device performs CSI measurement.

[0222] S403: The terminal device reports the CSI to the network device.

[0223] The CSI can be measured by the terminal device on each CSI-RS resource and on the CSI-RS resource group according to the CSI-RS resource set configured by the network device.

[0224] In one possible way, CSI may include two parts, the first part includes the optimal measurement result obtained by the terminal device when measuring the CSI-RS resources of the CSI-RS resource set. The second part includes the optimal measurement result obtained by the terminal device when measuring multiple groups of CSI-RS resource groups with binding relationships. For example, the CSI-RS resource set includes 8 CSI-RS resources, of which 4 CSI-RS resources have a binding relationship with each other, and the CSI-RS resources with a binding relationship are associated with different TCIstates. The first part includes the optimal measurement result obtained by the terminal device when measuring 8 CSI-RS resources, and the second part includes the optimal measurement result obtained by the terminal device when measuring on two groups of CSI-RS resource groups with a binding relationship. For example, the optimal measurement result in the first part is measured on the third CSI-RS resource, and the third CSI-RS resource is associated with the third transmission configuration indication state. The optimal measurement result of the first part may include the first CSI parameter. The first CSI parameter includes a first CRI, the CSI-RS resource indicated by the first CRI is the third CSI-RS resource, and the other parameters in the first CSI parameter except the first CRI are determined on the third CSI-RS resource. For example, the optimal measurement result in the second part is obtained by measuring on the first CSI-RS resource group, or is obtained by joint measurement on the first CSI-RS resource and the second CSI-RS resource. The optimal measurement result in the second part may include a second CSI parameter, the second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group, and the other parameters in the second CSI parameter except the second CRI are determined on the first CSI-RS resource group.

[0225] In another possible embodiment, the CSI may include a portion. The CSI includes the best measurement result obtained by the terminal device on the CSI-RS resource in the CSI-RS resource set and multiple groups of CSI-RS resources with a binding relationship. The best measurement result may be the CSI measurement result on the CSI-RS resource associated with one TCI-state, or the CSI measurement result obtained on the CSI-RS resource associated with two TCIstates.

[0226] As an optional implementation, before step S402, the network device may provide mode indication information to the terminal device. Take the CSI-RS resource set including N CSI-RS resources as an example. The mode indication information is used to indicate that each of the N CSI-RS resources included in the CSI-RS resource set is associated with one of the M transmission modes. The M transmission modes may include mDCI mTRP, single DCI multi-TRP Scheme 1a, Scheme 2a, Scheme 2b, Scheme 3 or M of Scheme 4. N is an integer greater than 1, and M is a positive integer less than or equal to N. The way in which the mode indication information indicates the transmission mode can be found in the description of the first possible implementation method, which will not be repeated here.

[0227] The third possible implementation is described in detail below in conjunction with a specific embodiment, where different CSI reporting configurations (CSI-reportConfig) configured for the terminal device are associated with different TRPs. Figure 5 shown.

[0228] S501: The network device sends a CSI reporting configuration group to the terminal device. The CSI reporting configuration group includes k CSI reporting configurations.

[0229] In one example, take k=2 as an example. The CSI-RS resource sets for channel measurement corresponding to the two CSI reporting configurations (CSI-ReportConfig) are associated with different TCI states. Take the two CSI reporting configurations as the first CSI reporting configuration and the second CSI reporting configuration as an example. The first CSI reporting configuration and the second CSI reporting configuration are used to configure a method for reporting CSI to the terminal device, the first CSI reporting configuration is associated with the first CSI-RS resource set, the second CSI reporting configuration is associated with the second CSI-RS resource set, the first CSI-RS resource set is associated with the first transmission configuration indication state, and the second CSI-RS resource set is associated with the second transmission configuration indication state. The first CSI reporting configuration and the second CSI reporting configuration have a binding relationship.

[0230] In another example, the CSI-RS reporting configuration group includes k>2 CSI-ReportConfigs. The network device may further send an indication message to the terminal device, where the indication message is used to indicate that there is a binding relationship between the first CSI reporting configuration and the second CSI reporting configuration in the k CSI-ReportConfigs. The first CSI reporting configuration is associated with a first CSI-RS resource set, the second CSI reporting configuration is associated with a second CSI-RS resource set, the first CSI-RS resource set is associated with a first transmission configuration indication state, and the second CSI-RS resource set is associated with a second transmission configuration indication state.

[0231] In a possible implementation, when the network device configures the association between different CSI-RS resource sets and TCI states, any of the following methods may be used:

[0232] In a first possible example, the CSI-RS resource sets corresponding to the two binding CSI reporting configurations occupy different time units. Taking the first CSI-RS resource set and the second CSI-RS resource set as an example, the first CSI-RS resource set and the second CSI-RS resource set occupy different time units.

[0233] In a second possible example, when the QCL Type of any TCI state associated with the CSI-RS resource sets corresponding to the two CSI reporting configurations with a binding relationship includes Type D, the time units occupied by the CSI-RS resource sets corresponding to the two CSI reporting configurations with a binding relationship are different. Taking the first CSI-RS resource set and the second CSI-RS resource set as an example, when the QCL Type included in any TCI state of the first TCI state associated with the first CSI-RS resource set and the second TCI state associated with the second CSI-RS resource set includes Type D, the time units occupied by the first CSI-RS resource set and the second CSI-RS resource set are different.

[0234] In a third possible example, the CSI-RS resource sets corresponding to the two CSI reporting configurations in a binding relationship occupy different time units and are not adjacent in the time domain. Taking the first CSI-RS resource set and the second CSI-RS resource set as an example, the first CSI-RS resource set and the second CSI-RS resource set occupy different time units and are not adjacent in the time domain.

[0235] In a fourth possible example, when the QCL Type of any TCI state associated with the CSI-RS resource sets corresponding to the two CSI reporting configurations with a binding relationship includes Type D, the CSI-RS resource sets corresponding to the two CSI reporting configurations with a binding relationship occupy different time units and are not adjacent in the time domain.

[0236] In a fifth possible example, the CSI-RS resource sets corresponding to two binding CSI reporting configurations occupy different time units, and the number of time units separated in the time domain is greater than or equal to the capability parameter reported by the terminal device.

[0237] In the sixth possible example, when the QCL Type of any TCI state associated with the CSI-RS resource sets corresponding to the two CSI reporting configurations with a binding relationship includes Type D, the CSI-RS resource sets corresponding to the two CSI reporting configurations with a binding relationship occupy different time units, and the number of time units separated in the time domain is greater than or equal to the capability parameters reported by the terminal device.

[0238] S502: After receiving the CSI reporting configuration group, the terminal device performs CSI measurement on the CSI-RS resource set associated with the CSI reporting configuration group.

[0239] S503: The terminal device reports the CSI to the network device.

[0240] The CSI may be obtained by measuring the CSI-RS resources included in the CSI-RS resource set corresponding to two different CSI reporting configurations configured by the network device according to the terminal device.

[0241] In one possible manner, the reported CSI may include two parts: one part is the optimal CSI measurement results obtained by the terminal device performing CSI measurements respectively according to the two CSI reporting configurations configured by the network device; that is, one part includes the optimal measurement result obtained by performing CSI measurement on the first CSI-RS resource set associated with the first CSI reporting configuration and the optimal measurement result obtained by performing CSI measurement on the second CSI-RS resource set associated with the second CSI reporting configuration. The other part is the optimal CSI measurement result obtained by the terminal device performing joint CSI measurement according to the two CSI reporting configurations configured by the network device, that is, the measurement result obtained by performing joint CSI measurement on the first CSI-RS resource set and the second CSI-RS resource set.

[0242] In another possible embodiment, the reported CSI includes the optimal CSI measurement result obtained by the terminal device through joint CSI measurement according to the two CSI reporting configurations configured by the network device, that is, the measurement result obtained by joint CSI measurement on the first CSI-RS resource set and the second CSI-RS resource set.

[0243] As an optional implementation method, in an embodiment of the present application, the network device can select the resource configuration method of the first possible implementation method, the second possible implementation method, or the third possible implementation method based on the demand or the port situation of the resources configured for the terminal device.

[0244] As an example, when the number of ports included in the CSI-RS resources that the network device needs to configure for the terminal device is greater than 16, the second possible implementation method can be used to configure the resources. When the number of ports included in the CSI-RS resources configured by the network device for the terminal device is not greater than 16, the first possible implementation method can be used to configure the resources.

[0245] When the first possible implementation method is used for resource configuration, the implementation of CSI measurement by the terminal device is simple, but the same CSI-RS resource (up to 32 ports) is divided into two port groups, which means that in multi-TRP measurement mode, it will not be possible to configure each TRP to perform CSI measurement according to 32 ports. When the second possible implementation method is used for resource configuration, there is no problem of not being able to perform CSI measurement according to 32 ports for each TRP. Based on this, when the network device needs to associate two CSI-RS resources configured for the terminal device with different TCI states, the number of ports of at least one of the two CSI-RS resources is 32, and according to the method of the second possible implementation method, the configuration information of the association relationship between the two CSI-RS resources is sent to the terminal device.

[0246] As another optional implementation method, in an embodiment of the present application, the network device may send two CSI-RS resource configuration information to the terminal device according to the first possible implementation method and the second possible implementation method.

[0247] The network device can indicate to the terminal device which of the two CSI-RS resource configuration information to use for CSI measurement. In one example, the default resource configuration method is used. The terminal device uses the default resource configuration method to determine the CSI-RS resource configuration information from the two CSI-RS resource configuration information, and uses the CSI-RS resource configuration information corresponding to the default resource configuration method to perform CSI measurement and reporting. The terminal device can determine which resource configuration method to select based on the switch status of the two resource configuration methods. The switch status can be indicated to the terminal device by the network device through DCI.

[0248] In another example, when the network device sends a configuration indication to the terminal device, the terminal device uses the resource configuration method indicated by the configuration indication to determine the CSI-RS resource configuration information in two CSI-RS resource configuration information, and uses the CSI-RS resource configuration information corresponding to the indicated resource configuration method to perform CSI measurement and reporting.

[0249] As another optional implementation, in an embodiment of the present application, the network device may perform CSI configuration on the terminal device according to at least two of the first possible implementation method, the second possible implementation method, or the third possible implementation method.

[0250] The network device may further indicate to the terminal device which of at least two implementation modes to adopt to perform CSI configuration on the terminal device.

[0251] In one example, a default CSI configuration mode is used. The terminal device selects the default CSI configuration mode from at least two CSI configuration modes and uses the CSI resource configuration information or CSI reporting configuration corresponding to the default CSI configuration mode for CSI measurement and reporting. The terminal device can determine which CSI configuration mode to select based on the switch status of the two CSI configuration modes. The switch status can be indicated to the terminal device by the network device via DCI.

[0252] In another example, when a network device sends a configuration indication to a terminal device, the terminal device uses the CSI configuration method indicated by the configuration indication to determine a CSI configuration method from at least two CSI configuration methods, and uses the CSI-RS resource configuration information or CSI reporting configuration corresponding to the indicated CSI configuration method to perform CSI measurement and reporting.

[0253] Figure 6A schematic block diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 includes a processing module 610, a receiving module 630, and a sending module 620, wherein the receiving module 630 and / or the sending module 620 can be referred to as a communication module, and the receiving module 630 and the sending module 620 can be separately arranged or integrated. In one example, the sending module 620 can be a transmitter, the receiving module 630 can be a receiver, the transmitter can include an antenna and a radio frequency circuit, etc., the receiver can also include an antenna and a radio frequency circuit, etc., the transmitter and the receiver can belong to a functional module, such as a transceiver, or the transmitter and the receiver can also be functional modules independent of each other; the processing module 610 can be a processor, such as a baseband processor, and the baseband processor can include one or more central processing units (CPUs). In another example, the sending module 620 and the receiving module 630 can be radio frequency units, and the processing module 610 can be a processor, such as a baseband processor. In another example, the sending module 620 and the receiving module 630 can be the input and output interfaces of a chip (e.g., a baseband chip) (e.g., the sending module 620 is an output interface, the receiving module 630 is an input interface, or if the input and output are the same interface, then the sending module 620 and the receiving module 630 are both the interface), and the processing module 610 can be a processor of a chip system, which can include one or more central processing units. It should be understood that the processing module 610 in the embodiment of the present application can be implemented by a processor or a processor-related circuit component, the sending module 620 can be implemented by a transmitter or a transmitter-related circuit component, and the receiving module 630 can be implemented by a receiver or a receiver-related circuit component.

[0254] The sending module 620 and the receiving module 630 can be a functional module, which can be called a transceiver module. The transceiver module can complete both sending and receiving operations; or, the sending module 620 and the receiving module 630 can also be two functional modules, which can be regarded as a general term for the two functional modules. The sending module 620 is used to complete the sending operation, and the receiving module 630 is used to complete the receiving operation.

[0255] In one application scenario, the communication device 600 is applied to a terminal device. For example, the communication device 600 may be a terminal device, or may be a chip applied to the terminal device or other combined devices or components having the functions of the terminal device. For example, the processing module 610 may be used to execute Figure 2 、 Figure 4 or Figure 5All operations performed by the terminal device in any of the illustrated embodiments except for the transmitting and receiving operations. For example, processing mode 610 is used to perform CSI measurement. In addition, regarding the implementation of the transmitting module 620 and the receiving module 630, please refer to the description of the implementation of the transmitting module 620 and the receiving module 630.

[0256] In one example:

[0257] a receiving module 630, configured to receive channel state information-reference signal (CSI-RS) resource configuration information from a network device, the CSI-RS resource configuration information including a CSI-RS resource set, the CSI-RS resource set including at least a first CSI-RS resource, a first port group corresponding to the first CSI-RS resource being associated with a first transmission configuration indication state, a second port group corresponding to the first CSI-RS resource being associated with a second transmission configuration indication state, the first port group including at least one port, the second port group including at least one port, and identifiers of the ports included in the first port group being different from identifiers of the ports included in the second port group;

[0258] A processing module 610 is configured to perform CSI measurement according to the CSI-RS resource configuration information;

[0259] The sending module 620 is configured to report the CSI to the network device.

[0260] As a possible implementation manner, the CSI-RS resource set further includes a second CSI-RS resource, and a port corresponding to the second CSI-RS resource is associated with a third transmission configuration indication state;

[0261] The CSI includes a first measurement result obtained by performing CSI measurement on a CSI-RS resource in the CSI-RS resource set, where the first measurement result includes a first CSI parameter and a second CSI parameter;

[0262] The first CSI parameter includes a first channel state information-reference signal resource indication CRI, the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and other CSI parameters in the first CSI parameter except the first CRI are determined on the first CSI-RS resource;

[0263] The second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and other CSI parameters in the second CSI parameter except the second CRI are determined on the second CSI-RS resource.

[0264] As a possible implementation manner, the ports in the first port group belong to a first code division multiple access CDM group set, and the first CDM group set includes one or more CDM groups; the first CDM group set is associated with the first transmission configuration indication state;

[0265] The ports in the second port group belong to a second code division multiple access group CDM group set, the second CDM group set includes one or more CDM groups; the second CDM group set is associated with the second transmission configuration indication state;

[0266] The identifiers of the CDM groups in the first CDM group set are different from the identifiers of the CDM groups in the second CDM group set.

[0267] As a possible implementation manner, the first CSI-RS resource includes J CDM groups, where J is an integer greater than 1;

[0268] The first CDM group set includes J1 CDM groups, and the J1 CDM groups are the 1st CDM group to the J1th CDM group among the J CDM groups;

[0269] The second CDM group set includes J1 CDM groups, where the J1 CDM groups are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, and J1=floor(J / 2), where floor() represents a rounding-down operation.

[0270] As a possible implementation manner, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units.

[0271] As a possible implementation manner, the first transmission configuration indication state includes quasi co-station type D, and / or the second transmission configuration indication state includes quasi co-station type D;

[0272] The time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units.

[0273] As a possible implementation manner, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are not adjacent in the time domain.

[0274] As a possible implementation manner, the number of time units separated in the time domain between the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group is greater than or equal to the capability parameter reported by the terminal device.

[0275] As a possible implementation, the receiving module 630 is further used to receive mode indication information from a network device, where the mode indication information is used to indicate that each of the N CSI-RS resources included in the CSI-RS resource set is associated with one of the M transmission modes, and the N CSI-RS resources include the first CSI-RS resource and the second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

[0276] In another example:

[0277] A receiving module 630 is configured to receive first channel state information-reference signal (CSI-RS) resource configuration information from a network device, where the first CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource group, the first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with a first transmission configuration indication state, the second CSI-RS resource is associated with a second transmission configuration indication state, and the first CSI-RS resource and the second CSI-RS resource are associated with each other;

[0278] A processing module 610 is configured to perform CSI measurement according to the first resource configuration information;

[0279] The sending module 620 is configured to report the CSI to the network device.

[0280] As a possible implementation manner, the CSI resource configuration information further includes a third CSI-RS resource, and the third CSI-RS resource is associated with a third transmission configuration indication state;

[0281] The CSI includes a first measurement result obtained by performing CSI measurement on a CSI-RS resource in the CSI-RS resource set, where the first measurement result includes a first CSI parameter and a second CSI parameter;

[0282] The first CSI parameter includes a first CRI, the CSI-RS resource indicated by the first CRI is the third CSI-RS resource, and other parameters of the first CSI parameter except the first CRI are determined on the third CSI-RS resource;

[0283] The second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group, and other parameters in the second CSI parameter except the second CRI are determined on the first CSI-RS resource group.

[0284] As a possible implementation manner, the first CSI-RS resource and the second CSI-RS resource occupy different time units.

[0285] As a possible implementation manner, the first transmission configuration indication state includes quasi co-station type D or the second transmission configuration indication state includes quasi co-station type D;

[0286] The first CSI-RS resource and the second CSI-RS resource occupy different time units.

[0287] As a possible implementation manner, the first CSI-RS resource and the second CSI-RS resource are not adjacent in the time domain.

[0288] As a possible implementation manner, the time unit interval occupied by the first CSI-RS resource and the second CSI-RS resource is greater than or equal to the capability parameter reported by the terminal device.

[0289] As a possible implementation, the receiving module 630 is further used to receive mode indication information from a network device, where the mode indication information is used to indicate that each of the N CSI-RS resources included in the CSI-RS resource set is associated with one of the M transmission modes, and the N CSI-RS resources include the first CSI-RS resource and the second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

[0290] As a possible implementation manner, the number of ports corresponding to the CSI-RS resources included in the first CSI-RS resource group is greater than 16.

[0291] As a possible implementation manner, the receiving module 630 is also used to receive second CSI-RS resource configuration information from the network device, the second CSI-RS resource configuration information includes the CSI-RS resource set, the first port group corresponding to the first CSI-RS resource included in the CSI-RS resource set is associated with the first transmission configuration indication state, the second port group corresponding to the first CSI-RS resource is associated with the second transmission configuration indication state, the first port group includes at least one port, the second port group includes at least one port, and the identifiers of the ports included in the first port group are different from the identifiers of the ports included in the second port group; the receiving module 630 is also used to receive a configuration indication from the network device before the processing module 610 performs CSI measurement according to the first resource configuration information, the configuration indication is used to indicate the use of the first resource configuration method, the resource configuration method of the first CSI-RS resource configuration information is the first resource configuration method, and the resource configuration method of the second CSI-RS resource configuration information is the second resource configuration method.

[0292] In another example:

[0293] A receiving module 630 is configured to receive a CSI reporting configuration group from a network device, the CSI reporting configuration group including a first CSI reporting configuration and a second CSI reporting configuration, the first CSI reporting configuration and the second CSI reporting configuration being used to configure a method for reporting CSI to a terminal device, the first CSI reporting configuration being associated with a first CSI-RS resource set, the second CSI reporting configuration being associated with a second CSI-RS resource set, the first CSI-RS resource set being associated with a first transmission configuration indication state, the second CSI-RS resource set being associated with a second transmission configuration indication state, the first CSI reporting configuration and the second CSI reporting configuration having a binding relationship, the binding relationship being used to indicate that CSI measurement is to be performed on the CSI-RS resource sets respectively associated with the two CSI reporting configurations having the binding relationship;

[0294] A processing module 610 is configured to perform CSI measurement according to the CSI reporting configuration group;

[0295] The sending module 620 is configured to report the CSI to the network device.

[0296] As a possible implementation manner, the CSI includes measurement results obtained by performing CSI measurement on a first CSI-RS resource set associated with the first CSI reporting configuration, measurement results obtained by performing CSI measurement on a second CSI-RS resource set associated with the second CSI reporting configuration, and measurement results obtained by performing CSI measurement on the first CSI-RS resource set and the second CSI-RS resource set.

[0297] As a possible implementation manner, the receiving module 630 is further configured to receive indication information from a network device, where the indication information is used to indicate that the first CSI reporting configuration and the second CSI reporting configuration in the CSI reporting configuration group have a binding relationship.

[0298] As a possible implementation manner, the first CSI-RS resource set and the second CSI-RS resource set occupy different time units.

[0299] As a possible implementation manner, the first transmission configuration indication state includes quasi co-station type D or the second transmission configuration indication state includes quasi co-station type D; the time units occupied by the first CSI-RS resource set and the second CSI-RS resource set are different.

[0300] As a possible implementation manner, the first CSI-RS resource set and the second CSI-RS resource set are not adjacent in the time domain.

[0301] As a possible implementation manner, the time unit interval occupied by the first CSI-RS resource set and the second CSI-RS resource set is greater than or equal to the capability parameter reported by the terminal device.

[0302] In another application scenario, the communication device 600 is applied to a network device. For example, the communication device 600 can be a network device, or a chip applied to a network device, or other combined devices or components having the functions of the above-mentioned network device. For example, the processing module 610 can be used to execute Figure 2 、 Figure 4 or Figure 5 All operations performed by the network device in any of the illustrated embodiments, except for the sending and receiving operations. For example, processing mode 610 is used to perform CSI measurement. Furthermore, for the implementation of the sending module 620 and the receiving module 630, reference can be made to the description of the implementation of the sending module 620 and the receiving module 630.

[0303] In one example:

[0304] A sending module 620 sends channel state information-reference signal CSI-RS resource configuration information to a terminal device, where the CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource, a first port group corresponding to the first CSI-RS resource is associated with a first transmission configuration indication state, a second port group corresponding to the first CSI-RS resource is associated with a second transmission configuration indication state, the first port group includes at least one port, the second port group includes at least one port, and identifiers of the ports included in the first port group are different from identifiers of the ports included in the second port group;

[0305] The receiving module 630 receives the CSI reported by the terminal device. The CSI is obtained by the terminal device through CSI measurement based on the CSI-RS resource configuration information. The processing module 610 can perform further processing based on the CSI. The processing module 610 can also be used to generate the CSI-RS resource configuration information.

[0306] As a possible implementation manner, the CSI-RS resource set also includes a second CSI-RS resource, and the port corresponding to the second CSI-RS resource is associated with the third transmission configuration indication state; the CSI includes a first measurement result obtained by performing CSI measurement on the CSI-RS resource in the CSI-RS resource set, and the first measurement result includes a first CSI parameter and a second CSI parameter; wherein, the first CSI parameter includes a first channel state information-reference signal resource indication CRI, the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and the other CSI parameters in the first CSI parameter except the first CRI are determined on the first CSI-RS resource; wherein, the second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and the other CSI parameters in the second CSI parameter except the second CRI are determined on the second CSI-RS resource.

[0307] As a possible implementation method, the ports in the first port group belong to a first code division multiple access CDM group set, and the first CDM group set includes one or more CDM groups; the first CDM group set is associated with a first transmission configuration indication state; the ports in the second port group belong to a second code division multiple access group CDM group set, and the second CDM group set includes one or more CDM groups; the second CDM group set is associated with a second transmission configuration indication state; the identifiers of the CDM groups in the first CDM group set are different from the identifiers of the CDM groups in the second CDM group set.

[0308] As a possible implementation manner, the first CSI-RS resource includes J CDM groups, where J is an integer greater than 1; the first CDM group set includes J1 CDM groups, and the J1 CDM groups are from the 1st CDM group to the J1th CDM group among the J CDM groups; the second CDM group set includes J1 CDM groups, and the J1 CDM groups are from the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, and J1 = floor(J / 2), where floor() represents rounding down operation.

[0309] As a possible implementation manner, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units.

[0310] As a possible implementation manner, the first transmission configuration indication state includes quasi-co-station type D, and / or the second transmission configuration indication state includes quasi-co-station type D; the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units.

[0311] As a possible implementation manner, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are not adjacent in the time domain.

[0312] As a possible implementation, the number of time units between the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group in the time domain is greater than or equal to the capability parameter reported by the terminal device.

[0313] As a possible implementation manner, the sending module 620 is further used to send mode indication information to the terminal device, where the mode indication information is used to indicate that each of the N CSI-RS resources included in the CSI-RS resource set is associated with one of the M transmission modes, and the N CSI-RS resources include a first CSI-RS resource and a second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

[0314] In another example:

[0315] A sending module 620 is configured to send first channel state information-reference signal CSI-RS resource configuration information to a terminal device, where the first CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource group, the first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with a first transmission configuration indication state, and the second CSI-RS resource is associated with a second transmission configuration indication state; and the first CSI-RS resource and the second CSI-RS resource are associated with each other;

[0316] The receiving module 630 is configured to receive CSI reported by the terminal device, where the CSI is obtained by the terminal device through CSI measurement based on the first CSI-RS resource configuration information. The processing module 610 can perform further processing based on the CSI. The processing module 610 can also be configured to generate the first CSI-RS resource configuration information.

[0317] As a possible implementation manner, the first CSI resource configuration information also includes a third CSI-RS resource, and the third CSI-RS resource is associated with a third transmission configuration indication state; the CSI includes a first measurement result obtained by performing CSI measurement on the CSI-RS resource in the CSI-RS resource set, and the first measurement result includes a first CSI parameter and a second CSI parameter; wherein, the first CSI parameter includes a first CRI, and the CSI-RS resource indicated by the first CRI is the third CSI-RS resource, and other parameters in the first CSI parameter except the first CRI are determined on the third CSI-RS resource; wherein, the second CSI parameter includes a second CRI, and the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group, and other parameters in the second CSI parameter except the second CRI are determined on the first CSI-RS resource group.

[0318] As a possible implementation manner, the first CSI-RS resource and the second CSI-RS resource occupy different time units.

[0319] As a possible implementation manner, the first transmission configuration indication state includes quasi co-station type D or the second transmission configuration indication state includes quasi co-station type D; the first CSI-RS resource and the second CSI-RS resource occupy different time units.

[0320] As a possible implementation manner, the first CSI-RS resource and the second CSI-RS resource are not adjacent in the time domain.

[0321] As a possible implementation manner, the time unit interval occupied by the first CSI-RS resource and the second CSI-RS resource is greater than or equal to the capability parameter reported by the terminal device.

[0322] As a possible implementation manner, the sending module 620 is further used to send mode indication information to the terminal device, where the mode indication information is used to indicate that each of the N CSI-RS resources included in the CSI-RS resource set is associated with one of the M transmission modes, and the N CSI-RS resources include a first CSI-RS resource and a second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

[0323] As a possible implementation manner, the number of ports corresponding to the CSI-RS resources included in the first CSI-RS resource group is greater than 16.

[0324] As a possible implementation manner, the receiving module 630 is also used to receive second CSI-RS resource configuration information from a network device, the second CSI-RS resource configuration information includes a CSI-RS resource set, the first port group corresponding to the first CSI-RS resource included in the CSI-RS resource set is associated with the first transmission configuration indication state, the second port group corresponding to the first CSI-RS resource is associated with the second transmission configuration indication state, the first port group includes at least one port, the second port group includes at least one port, and the identifiers of the ports included in the first port group are different from the identifiers of the ports included in the second port group; before performing CSI measurement according to the first resource configuration information, it also includes: receiving a configuration indication from the network device, the configuration indication is used to indicate the use of the first resource configuration method, the resource configuration method of the first CSI-RS resource configuration information is the first resource configuration method, and the resource configuration method of the second CSI-RS resource configuration information is the second resource configuration method.

[0325] In another example:

[0326] a sending module 620, configured to send a CSI reporting configuration group to a terminal device, where the CSI reporting configuration group includes a first CSI reporting configuration and a second CSI reporting configuration, where the first CSI reporting configuration and the second CSI reporting configuration are used to configure a method for reporting CSI to the terminal device, where the first CSI reporting configuration is associated with a first CSI-RS resource set, where the second CSI reporting configuration is associated with a second CSI-RS resource set, where the first CSI-RS resource set is associated with a first transmission configuration indication state, where the second CSI-RS resource set is associated with a second transmission configuration indication state, and where the first CSI reporting configuration and the second CSI reporting configuration have a binding relationship, where the binding relationship is used to indicate that CSI measurement is to be performed on the CSI-RS resource sets respectively associated with the two CSI reporting configurations having the binding relationship;

[0327] The receiving module 630 is configured to receive the CSI reported by the terminal device, where the CSI is obtained by the terminal device through CSI measurement according to the CSI reporting configuration group.

[0328] As a possible implementation, the CSI includes measurement results obtained by performing CSI measurement on a first CSI-RS resource set associated with a first CSI reporting configuration, measurement results obtained by performing CSI measurement on a second CSI-RS resource set associated with a second CSI reporting configuration, and measurement results obtained by performing CSI measurement on the first CSI-RS resource set and the second CSI-RS resource set.

[0329] As a possible implementation manner, the sending module 620 is further used to send indication information to the terminal device, where the indication information is used to indicate that the first CSI reporting configuration and the second CSI reporting configuration in the CSI reporting configuration group have a binding relationship.

[0330] As a possible implementation manner, the first CSI-RS resource set and the second CSI-RS resource set occupy different time units.

[0331] As a possible implementation manner, the first transmission configuration indication state includes quasi co-station type D or the second transmission configuration indication state includes quasi co-station type D; the time units occupied by the first CSI-RS resource set and the second CSI-RS resource set are different.

[0332] As a possible implementation manner, the first CSI-RS resource set and the second CSI-RS resource set are not adjacent in the time domain.

[0333] As a possible implementation manner, the time unit interval occupied by the first CSI-RS resource set and the second CSI-RS resource set is greater than or equal to the capability parameter reported by the terminal device.

[0334] It should be understood that the division of units in the above device is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, the units in the device can all be implemented in the form of software called through processing elements; or they can all be implemented in the form of hardware; or some units can be implemented in the form of software called through processing elements, and some units can be implemented in the form of hardware. For example, each unit can be a separately established processing element, or it can be integrated into a certain chip of the device. In addition, it can also be stored in the form of a program in a memory, called by a certain processing element of the device and perform the function of the unit. In addition, all or part of these units can be integrated together, or they can be implemented independently. The processing element described here can also be a processor, which can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each unit above can be implemented by an integrated logic circuit of hardware in the processor element or by software called through a processing element.

[0335] In one example, the unit in any of the above devices can be one or more integrated circuits configured to implement the above method, such as one or more application specific integrated circuits (ASICs), or one or more digital singnal processors (DSPs), or one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms. For another example, when the unit in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a CPU or other processor that can call a program. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0336] The above-mentioned unit for receiving (e.g., receiving module) is an interface circuit of the device, which is used to receive signals from other devices. For example, when the device is implemented as a chip, the receiving unit is the interface circuit of the chip used to receive signals from other chips or devices. The above-mentioned unit for sending (e.g., sending module) is an interface circuit of the device, which is used to send signals to other devices. For example, when the device is implemented as a chip, the sending unit is the interface circuit of the chip used to send signals to other chips or devices.

[0337] like Figure 7As shown, communication device 700 includes a processor 710 and an interface circuit 720. Processor 710 and interface circuit 720 are coupled to each other. It is understood that interface circuit 720 can be a transceiver or an input / output interface. Optionally, communication device 700 may also include a memory 730 for storing instructions executed by processor 710, input data required by processor 710 to execute instructions, or data generated after processor 710 executes instructions.

[0338] When the communication device 700 is used to implement the method in the above method embodiment, the processor 710 is used to execute the functions of the above processing module 610, and the interface circuit 720 is used to execute the functions of the above sending module 620 and receiving module 630.

[0339] When the communication device is a chip used in a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information from other modules in the terminal device (such as a radio frequency module or antenna), and the information is sent to the terminal device by the mobility management network element; or the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or antenna), and the information is sent to the network device by the terminal device.

[0340] When the communication device is a chip used in a network device, the network device chip implements the network device functions described in the method embodiments. The network device chip receives information from other modules (such as a radio frequency module or antenna) in the mobility management network element, where the information is sent by the terminal device to the network device; or the network device chip sends information to other modules (such as a radio frequency module or antenna) in the network device, where the information is sent by the network device to the terminal device.

[0341] like Figure 8 As shown, the present application also provides a schematic diagram of the structure of a terminal device, which can be used to implement the functions of the terminal device in the above method embodiment. For the convenience of explanation, Figure 8 Only the main components of the terminal device are shown. Figure 8 As shown, the terminal device 800 may include a processor 802, a memory, a transceiver control unit 801, and optionally, an antenna and / or input / output devices. The processor may be used to process communication protocols and communication data, as well as to control the user equipment and execute software programs. The memory may store software programs and / or data. The transceiver control unit may be used to convert baseband signals into radio frequency signals and to process radio frequency signals. The transceiver control unit 801 and the antenna may also be referred to as a transceiver, which may be used to transmit and receive radio frequency signals. Input / output devices, such as a touch screen, display, keyboard, etc., may be used to receive data input by a user and output data to the user.

[0342] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0343] The method steps in the embodiments of the present application can be implemented by hardware or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, which can be stored in random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), registers, hard disks, mobile hard disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device or a terminal device. Of course, the processor and storage medium can also exist as discrete components in the access network device or the terminal device.

[0344] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0345] The various illustrative logic units and circuits described in the embodiments of the present application can be implemented or operated by a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or the design of any combination thereof. The general-purpose processor can be a microprocessor, alternatively, the general-purpose processor can also be any traditional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration to implement.

[0346] The steps of the methods or algorithms described in the embodiments of the present application can be directly embedded in hardware, software units executed by a processor, or a combination of the two. The software unit can be stored in a random access memory (RAM), flash memory, read-only memory (ROM), EPROM memory, EEPROM memory, register, hard disk, removable disk, CD-ROM or other storage medium in any form in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Alternatively, the storage medium can also be integrated into the processor. The processor and storage medium can be arranged in an ASIC.

[0347] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0348] In one or more exemplary designs, the above functions described in the embodiments of the present application can be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions can be stored on a computer-readable medium, or transmitted in the form of one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media that facilitate the transfer of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general or special computer. For example, such computer-readable media can include but is not limited to RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store program codes in the form of instructions or data structures and other forms that can be read by general or special computers, or general or special processors. In addition, any connection can be appropriately defined as a computer-readable medium. For example, if the software is transmitted from a website, server or other remote resource via a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) or wirelessly, such as infrared, wireless and microwave, it is also included in the defined computer-readable medium. Disks and discs include compact disks, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs. Disks typically reproduce data magnetically, while discs typically reproduce data optically using lasers. Combinations of the above may also be included in computer-readable media.

[0349] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0350] The specific implementation methods described above further describe the purpose, technical solutions and beneficial effects of the embodiments of the present application in detail. It should be understood that the above is only the specific implementation method of the embodiments of the present application and is not intended to limit the scope of protection of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of protection of the embodiments of the present application. The above description of the specification of this application can make any technical field that can utilize or implement the contents of the embodiments of the present application. Any modification based on the disclosed content should be considered obvious in the art. The basic principles described in the embodiments of the present application can be applied to other variations without departing from the inventive essence and scope of the present application. Therefore, the contents disclosed in the embodiments of the present application are not limited to the described embodiments and designs, but can also be extended to the maximum scope consistent with the principles of the present application and the disclosed new features.

[0351] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the embodiments of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the embodiments of the present application are also intended to include these modifications and variations.

Claims

1. A resource configuration method, characterized in that: include: Obtain first channel state information-reference signal CSI-RS resource configuration information, where the first CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource group, the first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with a first transmission configuration indication state, and the second CSI-RS resource is associated with a second transmission configuration indication state; there is an association between the first CSI-RS resource and the second CSI-RS resource; the first CSI-RS resource and the second CSI-RS resource occupy different time units, the first CSI-RS resource and the second CSI-RS resource are not adjacent in the time domain, and the time unit interval occupied by the first CSI-RS resource and the second CSI-RS resource is greater than or equal to the capability parameter reported by the terminal device; A first measurement result is obtained, where the first measurement result is associated with first CSI-RS resource configuration information.

2. The method according to claim 1, characterized in that The first CSI-RS resource configuration information further includes a third CSI-RS resource, and the third CSI-RS resource is associated with a third transmission configuration indication state.

3. The method according to claim 2, characterized in that The CSI-RS resource set includes the third CSI-RS resource.

4. The method according to claim 2, characterized in that The first measurement result includes a first CSI parameter and a second CSI parameter; wherein, The first CSI parameter includes a first CRI, and the CSI-RS resource indicated by the first CRI is the third CSI-RS resource; The second CSI parameter includes a second CRI, and the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group.

5. The method according to claim 4, characterized in that The first CSI parameter further includes other parameters associated with the third CSI-RS resource; the first CSI parameter further includes other parameters associated with the first CSI-RS resource group; The other parameters include one or more of the following: Rank Indication (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Wideband PMI (i1), Layer Indicator (LI), Synchronization Signal Block Indicator (SSB Index), Layer 1 Reference Signal Received Power (L1-RSRP), Layer 1 Reference Signal Received Quality (L1-RSRQ).

6. The method according to any one of claims 3 to 5, characterized in that: The method further includes: reporting CSI; The reported CSI includes a first part and a second part; The first part includes an optimal measurement result obtained according to CSI-RS resource measurement of the CSI-RS resource set; The second part includes an optimal measurement result obtained by measuring a CSI-RS resource group in the CSI-RS resource set.

7. The method according to any one of claims 3 to 5, characterized in that: The method further includes: reporting CSI; The reported CSI includes the best measurement result of two types of measurement results, and the two types of measurement results include a first type of measurement result and a second type of measurement result; The first type of measurement result is a measurement result obtained by measuring the CSI-RS resources of the CSI-RS resource set; The second type of measurement results are measurement results obtained by measuring a CSI-RS resource group in the CSI-RS resource set.

8. A resource allocation method, characterized in that: include: Generate first channel state information-reference signal CSI-RS resource configuration information, where the first CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource group, the first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with a first transmission configuration indication state, and the second CSI-RS resource is associated with a second transmission configuration indication state; there is an association between the first CSI-RS resource and the second CSI-RS resource; the first CSI-RS resource and the second CSI-RS resource occupy different time units, the first CSI-RS resource and the second CSI-RS resource are not adjacent in the time domain, and an interval between time units occupied by the first CSI-RS resource and the second CSI-RS resource is greater than or equal to a capability parameter reported by the terminal device; Sending the first CSI-RS resource configuration information; The first CSI-RS resource configuration information is associated with a first measurement result obtained by the terminal device.

9. The method according to claim 8, characterized in that The first CSI-RS resource configuration information further includes a third CSI-RS resource, and the third CSI-RS resource is associated with a third transmission configuration indication state.

10. The method according to claim 9, characterized in that The CSI-RS resource set includes the third CSI-RS resource.

11. The method according to claim 9, characterized in that The first measurement result includes a first CSI parameter and a second CSI parameter; wherein, The first CSI parameter includes a first CRI, and the CSI-RS resource indicated by the first CRI is the third CSI-RS resource; The second CSI parameter includes a second CRI, and the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group.

12. The method according to claim 11, characterized in that The first CSI parameter further includes other parameters associated with the third CSI-RS resource; the first CSI parameter further includes other parameters associated with the first CSI-RS resource group; The other parameters include one or more of the following: Rank Indication (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Wideband PMI (i1), Layer Indicator (LI), Synchronization Signal Block Indicator (SSB Index), Layer 1 Reference Signal Received Power (L1-RSRP), Layer 1 Reference Signal Received Quality (L1-RSRQ).

13. The method according to any one of claims 10 to 12, characterized in that: The method further includes: receiving CSI; The received CSI includes a first part and a second part; The first part includes an optimal measurement result obtained according to CSI-RS resource measurement of the CSI-RS resource set; The second part includes an optimal measurement result obtained by measuring a CSI-RS resource group in the CSI-RS resource set.

14. The method according to any one of claims 10 to 12, characterized in that: The method further includes: receiving CSI; The received CSI includes an optimal measurement result of two types of measurement results, and the two types of measurement results include a first type of measurement result and a second type of measurement result; The first type of measurement result is a measurement result obtained by measuring the CSI-RS resources of the CSI-RS resource set; The second type of measurement results are measurement results obtained by measuring a CSI-RS resource group in the CSI-RS resource set.

15. A resource allocation device, characterized in that: include: a communication module, configured to obtain first channel state information-reference signal CSI-RS resource configuration information, where the first CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource group, the first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with a first transmission configuration indication state, and the second CSI-RS resource is associated with a second transmission configuration indication state; the first CSI-RS resource and the second CSI-RS resource are associated with each other; the first CSI-RS resource and the second CSI-RS resource occupy different time units, the first CSI-RS resource and the second CSI-RS resource are not adjacent in the time domain, and the interval between the time units occupied by the first CSI-RS resource and the second CSI-RS resource is greater than or equal to the capability parameter reported by the terminal device; The processing module is configured to obtain a first measurement result, where the first measurement result is associated with first CSI-RS resource configuration information.

16. The device according to claim 15, characterized in that The first CSI-RS resource configuration information further includes a third CSI-RS resource, and the third CSI-RS resource is associated with a third transmission configuration indication state.

17. The device according to claim 16, characterized in that The CSI-RS resource set includes the third CSI-RS resource.

18. The device according to claim 16, characterized in that The first measurement result includes a first CSI parameter and a second CSI parameter; wherein, The first CSI parameter includes a first CRI, and the CSI-RS resource indicated by the first CRI is the third CSI-RS resource; The second CSI parameter includes a second CRI, and the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group.

19. The device according to claim 18, characterized in that The first CSI parameter further includes other parameters associated with the third CSI-RS resource; the first CSI parameter further includes other parameters associated with the first CSI-RS resource group; The other parameters include one or more of the following: Rank Indication (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Wideband PMI (i1), Layer Indicator (LI), Synchronization Signal Block Indicator (SSB Index), Layer 1 Reference Signal Received Power (L1-RSRP), Layer 1 Reference Signal Received Quality (L1-RSRQ).

20. The device according to any one of claims 17 to 19, characterized in that The communication module is further configured to: report CSI; The reported CSI includes a first part and a second part; The first part includes an optimal measurement result obtained according to the CSI-RS resource measurement of the CSI-RS resource set; The second part includes an optimal measurement result obtained by measuring a CSI-RS resource group in the CSI-RS resource set.

21. The device according to any one of claims 17 to 19, characterized in that The communication module is further configured to: report CSI; The reported CSI includes the best measurement result of two types of measurement results, and the two types of measurement results include a first type of measurement result and a second type of measurement result; The first type of measurement result is a measurement result obtained by measuring the CSI-RS resources of the CSI-RS resource set; The second type of measurement results are measurement results obtained by measuring a CSI-RS resource group in the CSI-RS resource set.

22. The device according to any one of claims 15 to 19, characterized in that The communication module is a transceiver, and the processing module is a processor.

23. A resource allocation device, characterized in that: include: a processing module, configured to generate first channel state information-reference signal CSI-RS resource configuration information, where the first CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource group, the first CSI-RS resource group includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource is associated with a first transmission configuration indication state, and the second CSI-RS resource is associated with a second transmission configuration indication state; the first CSI-RS resource and the second CSI-RS resource are associated with each other; the first CSI-RS resource and the second CSI-RS resource occupy different time units, the first CSI-RS resource and the second CSI-RS resource are not adjacent in the time domain, and an interval between time units occupied by the first CSI-RS resource and the second CSI-RS resource is greater than or equal to a capability parameter reported by a terminal device; a communication module, configured to send the first CSI-RS resource configuration information; The first CSI-RS resource configuration information is associated with a first measurement result obtained by the terminal device.

24. The device according to claim 23, characterized in that The first CSI-RS resource configuration information further includes a third CSI-RS resource, and the third CSI-RS resource is associated with a third transmission configuration indication state.

25. The device according to claim 24, characterized in that The CSI-RS resource set includes the third CSI-RS resource.

26. The device according to claim 24, characterized in that The first measurement result includes a first CSI parameter and a second CSI parameter; wherein, The first CSI parameter includes a first CRI, and the CSI-RS resource indicated by the first CRI is the third CSI-RS resource; The second CSI parameter includes a second CRI, and the CSI-RS resource indicated by the second CRI is the first CSI-RS resource group.

27. The device according to claim 26, characterized in that The first CSI parameter further includes other parameters associated with the third CSI-RS resource; the first CSI parameter further includes other parameters associated with the first CSI-RS resource group; The other parameters include one or more of the following: Rank Indication (RI), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Wideband PMI (i1), Layer Indicator (LI), Synchronization Signal Block Indicator (SSB Index), Layer 1 Reference Signal Received Power (L1-RSRP), Layer 1 Reference Signal Received Quality (L1-RSRQ).

28. The device according to any one of claims 25 to 27, characterized in that The communication module is further configured to: receive CSI; The received CSI includes a first part and a second part; The first part includes an optimal measurement result obtained according to CSI-RS resource measurement of the CSI-RS resource set; The second part includes an optimal measurement result obtained by measuring a CSI-RS resource group in the CSI-RS resource set.

29. The device according to any one of claims 25 to 27, characterized in that The communication module is further configured to: receive CSI; The received CSI includes an optimal measurement result of two types of measurement results, and the two types of measurement results include a first type of measurement result and a second type of measurement result; The first type of measurement result is a measurement result obtained by measuring the CSI-RS resources of the CSI-RS resource set; The second type of measurement results are measurement results obtained by measuring a CSI-RS resource group in the CSI-RS resource set.

30. The device according to any one of claims 23 to 27, characterized in that The communication module is a transceiver, and the processing module is a processor.

31. A channel state information reporting method, characterized in that: include: Receiving channel state information-reference signal CSI-RS resource configuration information from a network device, the CSI-RS resource configuration information including a CSI-RS resource set, the CSI-RS resource set including at least a first CSI-RS resource, a first port group corresponding to the first CSI-RS resource being associated with a first transmission configuration indication state, a second port group corresponding to the first CSI-RS resource being associated with a second transmission configuration indication state, the first port group including at least one port, the second port group including at least one port, and identifiers of the ports included in the first port group being different from identifiers of the ports included in the second port group; The time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are not adjacent in the time domain, and the number of time units between the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group in the time domain is greater than or equal to the capability parameter reported by the terminal device; Perform CSI measurement according to the CSI-RS resource configuration information, and report the CSI to the network device.

32. The method according to claim 31, characterized in that The CSI-RS resource set further includes a second CSI-RS resource, and a port corresponding to the second CSI-RS resource is associated with a third transmission configuration indication state; The CSI includes a first measurement result obtained by performing CSI measurement on a CSI-RS resource in the CSI-RS resource set, where the first measurement result includes a first CSI parameter and a second CSI parameter; The first CSI parameter includes a first channel state information-reference signal resource indication CRI, the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and other CSI parameters in the first CSI parameter except the first CRI are determined on the first CSI-RS resource; The second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and other CSI parameters in the second CSI parameter except the second CRI are determined on the second CSI-RS resource.

33. The method according to claim 31, wherein: The ports in the first port group belong to a first code division multiple access CDM group set, the first CDM group set including one or more CDM groups; the first CDM group set is associated with the first transmission configuration indication state; The ports in the second port group belong to a second code division multiple access CDM group set, the second CDM group set includes one or more CDM groups; the second CDM group set is associated with the second transmission configuration indication state; The identifiers of the CDM groups in the first CDM group set are different from the identifiers of the CDM groups in the second CDM group set.

34. The method according to claim 33, wherein: The first CSI-RS resource includes J CDM groups, where J is an integer greater than 1; The first CDM group set includes J1 CDM groups, and the J1 CDM groups are the 1st CDM group to the J1th CDM group among the J CDM groups; The second CDM group set includes J1 CDM groups, where the J1 CDM groups are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, and J1=floor(J / 2), where floor() represents a rounding-down operation.

35. The method according to any one of claims 31 to 34, characterized in that: The first transmission configuration indication state includes quasi co-station type D, and / or the second transmission configuration indication state includes quasi co-station type D.

36. The method according to claim 32, wherein Also includes: Receive mode indication information from a network device, where the mode indication information is used to indicate that each of N CSI-RS resources included in the CSI-RS resource set is associated with one of M transmission modes, where the N CSI-RS resources include the first CSI-RS resource and the second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

37. A channel state information reporting method, characterized in that: include: Sending channel state information-reference signal CSI-RS resource configuration information to a terminal device, the CSI-RS resource configuration information includes a CSI-RS resource set, the CSI-RS resource set includes at least a first CSI-RS resource, a first port group corresponding to the first CSI-RS resource is associated with a first transmission configuration indication state, a second port group corresponding to the first CSI-RS resource is associated with a second transmission configuration indication state, the first port group includes at least one port, the second port group includes at least one port, and the identifiers of the ports included in the first port group are different from the identifiers of the ports included in the second port group; wherein the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are not adjacent in the time domain, and the number of time units between the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group in the time domain is greater than or equal to the capability parameter reported by the terminal device; Receive CSI reported by the terminal device, where the CSI is obtained by the terminal device performing CSI measurement according to the CSI-RS resource configuration information.

38. The method according to claim 37, wherein The CSI-RS resource set further includes a second CSI-RS resource, and a port corresponding to the second CSI-RS resource is associated with a third transmission configuration indication state; The CSI includes a first measurement result obtained by performing CSI measurement on a CSI-RS resource in the CSI-RS resource set, where the first measurement result includes a first CSI parameter and a second CSI parameter; The first CSI parameter includes a first channel state information-reference signal resource indication CRI, the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and other CSI parameters in the first CSI parameter except the first CRI are determined on the first CSI-RS resource; The second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and other CSI parameters in the second CSI parameter except the second CRI are determined on the second CSI-RS resource.

39. The method according to claim 37, wherein: The ports in the first port group belong to a first code division multiple access CDM group set, the first CDM group set including one or more CDM groups; the first CDM group set is associated with the first transmission configuration indication state; The ports in the second port group belong to a second code division multiple access CDM group set, the second CDM group set includes one or more CDM groups; the second CDM group set is associated with the second transmission configuration indication state; The identifiers of the CDM groups in the first CDM group set are different from the identifiers of the CDM groups in the second CDM group set.

40. The method according to claim 39, wherein: The first CSI-RS resource includes J CDM groups, where J is an integer greater than 1; The first CDM group set includes J1 CDM groups, and the J1 CDM groups are the 1st CDM group to the J1th CDM group among the J CDM groups; The second CDM group set includes J1 CDM groups, where the J1 CDM groups are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, and J1=floor(J / 2), where floor() represents a rounding-down operation.

41. The method according to any one of claims 37 to 40, characterized in that: The first transmission configuration indication state includes quasi co-station type D, and / or the second transmission configuration indication state includes quasi co-station type D.

42. The method according to claim 38, wherein Also includes: Mode indication information is sent to the terminal device, where the mode indication information is used to indicate that each of the N CSI-RS resources included in the CSI-RS resource set is associated with one of the M transmission modes, and the N CSI-RS resources include the first CSI-RS resource and the second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

43. A communication device, characterized in that Applied to terminal equipment, including: A communication module, configured to receive channel state information-reference signal CSI-RS resource configuration information from a network device, the CSI-RS resource configuration information including a CSI-RS resource set, the CSI-RS resource set including at least a first CSI-RS resource, a first port group corresponding to the first CSI-RS resource being associated with a first transmission configuration indication state, a second port group corresponding to the first CSI-RS resource being associated with a second transmission configuration indication state, the first port group including at least one port, the second port group including at least one port, and identifiers of the ports included in the first port group being different from identifiers of the ports included in the second port group; wherein the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are not adjacent in the time domain, and the number of time units between the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group in the time domain is greater than or equal to the capability parameter reported by the terminal device; a processing module, configured to perform CSI measurement according to the CSI-RS resource configuration information; The communication module is further configured to report the CSI to the network device.

44. The device according to claim 43, characterized in that The CSI-RS resource set further includes a second CSI-RS resource, and a port corresponding to the second CSI-RS resource is associated with a third transmission configuration indication state; The CSI includes a first measurement result obtained by performing CSI measurement on a CSI-RS resource in the CSI-RS resource set, where the first measurement result includes a first CSI parameter and a second CSI parameter; The first CSI parameter includes a first channel state information-reference signal resource indication CRI, the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and other CSI parameters in the first CSI parameter except the first CRI are determined on the first CSI-RS resource; The second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and other CSI parameters in the second CSI parameter except the second CRI are determined on the second CSI-RS resource.

45. The device according to claim 43, characterized in that: The ports in the first port group belong to a first code division multiple access CDM group set, the first CDM group set including one or more CDM groups; the first CDM group set is associated with the first transmission configuration indication state; The ports in the second port group belong to a second code division multiple access CDM group set, the second CDM group set includes one or more CDM groups; the second CDM group set is associated with the second transmission configuration indication state; The identifiers of the CDM groups in the first CDM group set are different from the identifiers of the CDM groups in the second CDM group set.

46. ​​The device according to claim 45, characterized in that: The first CSI-RS resource includes J CDM groups, where J is an integer greater than 1; The first CDM group set includes J1 CDM groups, and the J1 CDM groups are the 1st CDM group to the J1th CDM group among the J CDM groups; The second CDM group set includes J1 CDM groups, where the J1 CDM groups are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, and J1=floor(J / 2), where floor() represents a rounding-down operation.

47. The device according to any one of claims 43 to 46, characterized in that: The first transmission configuration indicates that the state includes quasi co-station type D, and / or the second transmission configuration indicates that the state includes quasi co-station type D.

48. The device according to claim 44, characterized in that The communication module is further used for: Receive mode indication information from a network device, where the mode indication information is used to indicate that each of N CSI-RS resources included in the CSI-RS resource set is associated with one of M transmission modes, where the N CSI-RS resources include the first CSI-RS resource and the second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

49. The device according to any one of claims 43 to 46, characterized in that The communication module is a transceiver, and the processing module is a processor.

50. A communication device, characterized in that Applicable to network equipment, including: A communication module, configured to send channel state information-reference signal CSI-RS resource configuration information to a terminal device, the CSI-RS resource configuration information including a CSI-RS resource set, the CSI-RS resource set including at least a first CSI-RS resource, a first port group corresponding to the first CSI-RS resource being associated with a first transmission configuration indication state, a second port group corresponding to the first CSI-RS resource being associated with a second transmission configuration indication state, the first port group including at least one port, the second port group including at least one port, and the identifiers of the ports included in the first port group being different from the identifiers of the ports included in the second port group; wherein the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are located in different time units, the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group are not adjacent in the time domain, and the number of time units between the time-frequency resources corresponding to the ports included in the first port group and the time-frequency resources corresponding to the ports included in the second port group in the time domain is greater than or equal to the capability parameter reported by the terminal device; The communication module is further configured to receive CSI reported by a terminal device, where the CSI is obtained by the terminal device performing CSI measurement based on the CSI-RS resource configuration information.

51. The device according to claim 50, characterized in that The CSI-RS resource set further includes a second CSI-RS resource, and a port corresponding to the second CSI-RS resource is associated with a third transmission configuration indication state; The CSI includes a first measurement result obtained by performing CSI measurement on a CSI-RS resource in the CSI-RS resource set, where the first measurement result includes a first CSI parameter and a second CSI parameter; The first CSI parameter includes a first channel state information-reference signal resource indication CRI, the CSI-RS resource indicated by the first CRI is the first CSI-RS resource, and other CSI parameters in the first CSI parameter except the first CRI are determined on the first CSI-RS resource; The second CSI parameter includes a second CRI, the CSI-RS resource indicated by the second CRI is the second CSI-RS resource, and other CSI parameters in the second CSI parameter except the second CRI are determined on the second CSI-RS resource.

52. The device according to claim 50, characterized in that: The ports in the first port group belong to a first code division multiple access CDM group set, the first CDM group set including one or more CDM groups; the first CDM group set is associated with the first transmission configuration indication state; The ports in the second port group belong to a second code division multiple access CDM group set, the second CDM group set includes one or more CDM groups; the second CDM group set is associated with the second transmission configuration indication state; The identifiers of the CDM groups in the first CDM group set are different from the identifiers of the CDM groups in the second CDM group set.

53. The device according to claim 52, characterized in that: The first CSI-RS resource includes J CDM groups, where J is an integer greater than 1; The first CDM group set includes J1 CDM groups, and the J1 CDM groups are the 1st CDM group to the J1th CDM group among the J CDM groups; The second CDM group set includes J1 CDM groups, where the J1 CDM groups are the J-J1+1th CDM group to the Jth CDM group among the J CDM groups, and J1=floor(J / 2), where floor() represents a rounding-down operation.

54. The device according to any one of claims 50 to 52, characterized in that: The first transmission configuration indicates that the state includes quasi co-station type D, and / or the second transmission configuration indicates that the state includes quasi co-station type D.

55. The device according to claim 51, characterized in that: The communication module is further used to send mode indication information to the terminal device, where the mode indication information is used to indicate that each of the N CSI-RS resources included in the CSI-RS resource set is associated with one of the M transmission modes, and the N CSI-RS resources include the first CSI-RS resource and the second CSI-RS resource, where N is an integer greater than 1, and M is a positive integer less than or equal to N.

56. The device according to any one of claims 50 to 52, characterized in that The communication module is a transceiver.

57. A computer-readable storage medium, characterized in that The computer storage medium stores computer instructions, which, when executed, cause the method described in any one of claims 1 to 7 to be executed, or cause the method described in any one of claims 8 to 14 to be executed, or cause the method described in any one of claims 31 to 36 to be executed, or cause the method described in any one of claims 37 to 42 to be executed.

58. A communication device, characterized in that The communication device includes a processor and a communication interface, wherein the communication interface is used to input and / or output signals; the processor runs a computer program code or instructions to execute the method according to any one of claims 1 to 7, or the processor runs the computer program code or instructions to execute the method according to any one of claims 8 to 14, or the processor runs the computer program code or instructions to execute the method according to any one of claims 31 to 36, or the processor runs the computer program code or instructions to execute the method according to any one of claims 37 to 42.

59. A computer program product comprising computer instructions, characterized in that When the computer instructions are executed, the method of any one of claims 1 to 7 is executed, or the method of any one of claims 8 to 14 is executed, or the method of any one of claims 31 to 36 is executed, or the method of any one of claims 37 to 42 is executed.

Images