CSI report configuration method, terminal device, and network device

1. A channel state information (CSI) report configuration method, performed by a terminal device, and the method comprising:

receiving a CSI report configuration and at least one CSI resource configuration, wherein the CSI resource configuration indicates a CSI resource set that comprises multiple CSI resource subsets, wherein the multiple CSI resource subsets correspond to quasi co-located (QCL) CSI resources with different spatial properties respectively, wherein configuration information for configuring the multiple CSI resource subsets indicates a quantity of the multiple CSI resource subsets or a quantity of CSI resources in each CSI resource subset;

determining a CSI report based on the CSI report configuration and the at least one CSI resource configuration, wherein the CSI report comprises report information determined based on the multiple CSI resource subsets, wherein the CSI report includes one group of channel state information-reference resource indices (CRIs), CSI resource quality corresponding to the one group of CRIs, multiple precoding matrix indicators (PMIs) corresponding to the one group of CRIs respectively, and multiple rank indicators fills) corresponding to the multiple PMIs respectively; and

sending the CSI report.

2. The method according to claim 1 , wherein

the CSI report is jointly determined by the QCL CSI resources with the different spatial properties.

3. The method according to claim 1 , wherein

the CSI report configuration is associated with multiple CSI resource configuration groups, and each CSI resource configuration group comprises at least one CSI resource configuration; or

a CSI resource configuration associated with the CSI report configuration comprises multiple CSI resource sets; or

one CSI resource set in a CSI resource configuration associated with the CSI report configuration comprises multiple CSI resource subsets.

4. The method according to claim 3 , wherein

the multiple CSI resource configuration groups correspond to QCL CSI resources with different spatial properties respectively; or

the multiple CSI resource sets correspond to QCL CSI resources with different spatial properties respectively.

5. The method according to claim 4 , further comprising:

based on protocol provisions or based on channel state information-reference resource index (CRI) indication information from a network device, performing any one of the following steps (1)-(3):

(1) sending multiple groups of CRIs or CSI resource quality corresponding to each CRI in the multiple groups of CRIs, wherein the multiple groups of CRIs correspond to a preset CSI resource configuration group of the multiple CSI resource configuration groups, correspond to a preset CSI resource set of the multiple CSI resource sets, or correspond to a preset CSI resource subset of the multiple CSI resource subsets; or

(2) sending one group of CRIs or CSI resource quality corresponding to each CRI in the one group of CRIs, wherein the one group of CRIs correspond to one CSI resource configuration group of the multiple CSI resource configuration groups, correspond to one CSI resource set of the multiple CSI resource sets, or correspond to one CSI resource subset of the multiple CSI resource subsets; or

(3) sending one group of CRIs or CSI resource quality corresponding to each CRI in the one group of CRIs, wherein the one group of CRIs correspond to the multiple CSI resource configuration groups, correspond to the multiple CSI resource sets, or correspond to the multiple CSI resource subsets.

6. The method according to claim 4 , wherein

if the CSI report configuration is associated with a CSI-IM-based CSI resource configuration, the method further comprises: receiving a CSI-IM-based CSI resource configured by a network device, wherein a channel-measurement-based CSI resource is in a correspondence relationship with the CSI-IM-based CSI resource; or

if the CSI report configuration is associated with an NZP-CSI-RS-based CSI resource configuration, the method further comprises: receiving a CSI resource for NZP-CSI-RS-based interference measurement configured by a network device, wherein the channel-measurement-based CSI resource is in a correspondence relationship with the CSI resource for NZP-C SI-RS-based interference measurement.

7. The method according to claim 3 , further comprising:

obtaining a quantity of the multiple CSI resource configuration groups and a quantity of CSI resource configurations in each CSI resource configuration group, or information about a correspondence relationship between a CSI resource configuration group and a CSI resource configuration based on protocol provisions or based on configuration information from a network device;

obtaining a quantity of the multiple CSI resource sets and a quantity of CSI resources in each CSI resource set, or information about a correspondence relationship between a CSI resource set and a CSI resource based on the protocol provisions or based on the configuration information from the network device; and

obtaining the quantity of the multiple CSI resource subsets and the quantity of CSI resources in each CSI resource subset, or information about a correspondence relationship between a CSI resource subset and a CSI resource based on the protocol provisions or based on the configuration information from the network device.

8. The method according to claim 7 , wherein each CSI resource configuration group of the multiple CSI resource configuration groups comprises one to three CSI resource configurations, wherein

if each CSI resource configuration group comprises one CSI resource configuration, the CSI resource configuration is used for measuring CSI resource quality of a channel;

if each CSI resource configuration group comprises two CSI resource configurations, a first CSI resource configuration of the two CSI resource configurations is used for the channel measurement, and a second CSI resource configuration is used for interference measurement based on channel state information interference measurement (CSI-IM) or interference measurement based on non-zero power channel state information-reference signal (NZP-CSI-RS); and

if each CSI resource configuration group comprises three CSI resource configurations, a first CSI resource configuration of the three CSI resource configurations is used for the channel measurement, a second CSI resource configuration is used for the CSI-IM-based interference measurement, and a third CSI resource configuration is used for the NZP CSI-RS-based interference measurement.

9. The method according to claim 3 , wherein

the CSI report further comprises at least one of the following: a channel quality indicator (CQI) jointly determined by multiple CRIs.

10. A terminal device, comprising: a memory, a processor, and a computer program that is stored in the memory, wherein the computer program, when executed by the processor, causes the processor to implement operations comprising:

receiving a CSI report configuration and at least one CSI resource configuration, wherein the CSI resource configuration indicates a CSI resource set that comprises multiple CSI resource subsets, wherein the multiple CSI resource subsets correspond to quasi co-located (QCL) CSI resources with different spatial properties respectively, wherein configuration information for configuring the multiple CSI resource subsets indicates a quantity of the multiple CSI resource subsets or a quantity of CSI resources in each CSI resource subset;

determining a CSI report based on the CSI report configuration and the at least one CSI resource configuration, wherein the CSI report comprises report information determined based on the multiple CSI resource subsets, wherein the CSI report includes one group of channel state information-reference resource indices (CRIs), CSI resource quality corresponding to the one group of CRIs, multiple precoding matrix indicators fPMIs) corresponding to the one group of CRIs respectively, and multiple rank indicators fills) corresponding to the multiple PMI respectively; and

sending the CSI report.

11. The terminal device according to claim 10 , wherein the CSI report is jointly determined by the QCL CSI resources with the different spatial properties.

12. The terminal device according to claim 10 , wherein

the CSI report configuration is associated with multiple CSI resource configuration groups, and each CSI resource configuration group comprises at least one CSI resource configuration; or

a CSI resource configuration associated with the CSI report configuration comprises multiple CSI resource sets; or

one CSI resource set in a CSI resource configuration associated with the CSI report configuration comprises multiple CSI resource subsets.

13. The terminal device according to claim 12 , wherein

the multiple CSI resource configuration groups correspond to QCL CSI resources with different spatial properties respectively; or

the multiple CSI resource sets correspond to QCL CSI resources with different spatial properties respectively.

14. The terminal device according to claim 13 , wherein the computer program, when executed by the processor, causes the processor to implement operations further comprising:

based on protocol provisions or based on channel state information-reference resource index (CRI) indication information from a network device, performing any one of the following steps (1)-(3):

(1) sending multiple groups of CRIs or CSI resource quality corresponding to each CRI in the multiple groups of CRIs, wherein the multiple groups of CRIs correspond to a preset CSI resource configuration group of the multiple CSI resource configuration groups, correspond to a preset CSI resource set of the multiple CSI resource sets, or correspond to a preset CSI resource subset of the multiple CSI resource subsets; or

(2) sending one group of CRIs or CSI resource quality corresponding to each CRI in the one group of CRIs, wherein the one group of CRIs correspond to one CSI resource configuration group of the multiple CSI resource configuration groups, correspond to one CSI resource set of the multiple CSI resource sets, or correspond to one CSI resource subset of the multiple CSI resource subsets; or

(3) sending one group of CRIs or CSI resource quality corresponding to each CRI in the one group of CRIs, wherein the one group of CRIs correspond to the multiple CSI resource configuration groups, correspond to the multiple CSI resource sets, or correspond to the multiple CSI resource subsets.

15. The terminal device according to claim 13 , wherein

if the CSI report configuration is associated with a CSI-IM-based CSI resource configuration, the computer program, when executed by the processor, causes the processor to implement operations further comprising: receiving a CSI-IM-based CSI resource configured by a network device, wherein a channel-measurement-based CSI resource is in a correspondence relationship with the CSI-IM-based CSI resource; or

if the CSI report configuration is associated with an NZP-CSI-RS-based CSI resource configuration, the computer program, when executed by the processor, causes the processor to implement operations further comprising: receiving a CSI resource for NZP-CSI-RS-based interference measurement configured by a network device, wherein the channel-measurement-based CSI resource is in a correspondence relationship with the CSI resource for NZP-C SI-RS-based interference measurement.

16. The terminal device according to claim 12 , wherein the computer program, when executed by the processor, causes the processor to implement operations further comprising:

obtaining a quantity of the multiple CSI resource configuration groups and a quantity of CSI resource configurations in each CSI resource configuration group, or information about a correspondence relationship between a CSI resource configuration group and a CSI resource configuration based on protocol provisions or based on configuration information from a network device;

obtaining a quantity of the multiple CSI resource sets and a quantity of CSI resources in each CSI resource set, or information about a correspondence relationship between a CSI resource set and a CSI resource based on the protocol provisions or based on the configuration information from the network device; and

obtaining the quantity of the multiple CSI resource subsets and the quantity of CSI resources in each CSI resource subset, or information about a correspondence relationship between a CSI resource subset and a CSI resource based on the protocol provisions or based on the configuration information from the network device.

17. The terminal device according to claim 16 , wherein each CSI resource configuration group of the multiple CSI resource configuration groups comprises one to three CSI resource configurations, wherein

if each CSI resource configuration group comprises one CSI resource configuration, the CSI resource configuration is used for measuring CSI resource quality of a channel;

if each CSI resource configuration group comprises two CSI resource configurations, a first CSI resource configuration of the two CSI resource configurations is used for the channel measurement, and a second CSI resource configuration is used for interference measurement based on channel state information interference measurement (CSI-IM) or interference measurement based on non-zero power channel state information-reference signal (NZP-CSI-RS); and

if each CSI resource configuration group comprises three CSI resource configurations, a first CSI resource configuration of the three CSI resource configurations is used for the channel measurement, a second CSI resource configuration is used for the CSI-IM-based interference measurement, and a third CSI resource configuration is used for the NZP CSI-RS-based interference measurement.

18. The terminal device according to claim 12 , wherein

the CSI report further comprises at least one of the following: a channel quality indicator (CQI) jointly determined by multiple CRIs.

19. A computer readable storage medium, storing a computer program that, when executed by a processor, causes the processor to implement operations comprising:

receiving a CSI report configuration and at least one CSI resource configuration, wherein the CSI resource configuration indicates a CSI resource set that comprises multiple CSI resource subsets, wherein the multiple CSI resource subsets correspond to quasi co-located (QCL) CSI resources with different spatial properties respectively, wherein configuration information for configuring the multiple CSI resource subsets indicates a quantity of the multiple CSI resource subsets or a quantity of CSI resources in each CSI resource subset;

determining a CSI report based on the CSI report configuration and the at least one CSI resource configuration, wherein the CSI report comprises report information determined based on the multiple CSI resource subsets, wherein the CSI report includes one group of channel state information-reference resource indices (CRIs), CSI resource quality corresponding to the one group of CRIs, multiple precoding matrix indicators (PMIs) corresponding to the one group of CRIs respectively, and multiple rank indicators fills) corresponding to the multiple PMI respectively; and

sending the CSI report.

20. The computer readable storage medium according to claim 19 , wherein

the CSI report is jointly determined by the QCL CSI resources with the different spatial properties.