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CN-122001418-A - Reporting method of Channel State Information (CSI), terminal and network equipment

CN122001418ACN 122001418 ACN122001418 ACN 122001418ACN-122001418-A

Abstract

The application discloses a reporting method of Channel State Information (CSI), a terminal and network side equipment, belonging to the technical field of communication; the terminal sends the CSI report to network side equipment, wherein the CSI report comprises first information and a rank indication RI, and the first information is used for indicating the number of layers corresponding to a precoding matrix indication PMI included in the CSI report.

Inventors

  • YUAN YILING
  • SUN PENG
  • JIANG LU

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260508
Application Date
20241101

Claims (20)

  1. 1. The method for reporting the Channel State Information (CSI) is characterized by comprising the following steps: The terminal determines a CSI report; the terminal sends the CSI report to network side equipment; The CSI report includes first information and a rank indication RI, where the first information is used to indicate the number of layers corresponding to a precoding matrix indication PMI included in the CSI report.
  2. 2. The method of claim 1, wherein the first information is carried in a first portion Part 1 of the CSI report.
  3. 3. The method of claim 1 or 2, wherein the terminal determining CSI reports comprises: the terminal acquires reporting configuration information for reporting the CSI; The terminal determines the CSI report according to the reporting configuration information; wherein, the reporting configuration information includes or indicates any one of the following: a first class of rank restriction and a second class of rank restriction, wherein the first class of rank restriction is used for indicating an optional value of the RI, and the second class of rank restriction is used for indicating an optional value of a layer number corresponding to the PMI; And a third class of rank restriction, wherein the third class of rank restriction is used for indicating the selectable value of the RI and the selectable value of the layer number corresponding to the PMI.
  4. 4. The method of claim 3, wherein, in case that the optional value of the RI is indicated by the first class rank restriction, the optional value of the number of layers corresponding to the PMI is indicated by the second class rank restriction, The maximum value of the selectable values of the RI indicated by the first class rank restriction is smaller than or equal to the minimum value of the selectable values of the number of layers corresponding to the PMI indicated by the second class rank restriction; Or alternatively The maximum value of the selectable values of the RI indicated by the first class rank restriction is smaller than or equal to the maximum value of the selectable values of the number of layers corresponding to the PMI indicated by the second class rank restriction, and the minimum value of the selectable values of the RI indicated by the first class rank restriction is smaller than or equal to the minimum value of the selectable values of the number of layers corresponding to the PMI indicated by the second class rank restriction.
  5. 5. The method of claim 3 or 4, wherein at least one of the first class of rank constraints and the second class of rank constraints is indicated by a bitmap.
  6. 6. The method of any of claims 3-5, wherein the reporting configuration information further comprises or indicates at least one of: A power offset; a subset of antenna ports; At least one reporting sub-configuration, wherein each reporting sub-configuration indicates or corresponds to a different subset of the antenna ports, and/or each reporting sub-configuration indicates or corresponds to a different power offset.
  7. 7. The method of claim 6, wherein the reporting sub-configuration satisfies at least one of the following if the at least one reporting sub-configuration is included in or indicated by the reporting configuration information: each reporting sub-configuration corresponds to a different rank constraint of the first type, or different reporting sub-configurations correspond to the same rank constraint of the first type; And the different reporting sub-configurations correspond to the same rank limit of the second class.
  8. 8. The method of claim 3, wherein, in the case where the optional value of the RI and the optional value of the number of layers corresponding to the PMI are indicated by the third class rank restriction, the number of layers corresponding to the PMI included in the CSI report is a maximum value among the optional values indicated by the third class rank restriction.
  9. 9. The method of any of claims 3-8, wherein the CSI report satisfies at least one of: The CSI report comprises second information when the reporting configuration information does not comprise or indicates power offset, an antenna port subset and at least one reporting sub-configuration; In the case that at least one reporting sub-configuration is not included or indicated in the reporting configuration information, but at least one of the power offset and the antenna port subset is included or indicated, second information is included in the CSI report, wherein the second information corresponds to at least one of the power offset and the antenna port subset; When the reporting configuration information includes or indicates at least one reporting sub-configuration, the CSI report includes second information, where the second information corresponds to a first reporting sub-configuration in the at least one reporting sub-configuration; wherein the second information includes one of the RI, one of the PMIs, and at least one channel quality indication CQI.
  10. 10. The method of claim 9, wherein the CQI is determined based on a first L-layer precoding in a precoding matrix corresponding to the PMI, the L indicated by the RI, the L being greater than or equal to 1.
  11. 11. The method of claim 9, wherein, in a case where the second information included in the CSI report corresponds to a first reporting sub-configuration of the at least one reporting sub-configuration, the first reporting sub-configuration satisfies at least one of: the first reporting sub-configuration is indicated by the network side device; the number of antenna ports in the antenna port subset corresponding to the first reporting sub-configuration is the smallest in the antenna port subset corresponding to each reporting sub-configuration included in a first set, and the first set is a subset of the at least one reporting sub-configuration; the first reporting sub-configuration is a reporting sub-configuration with a specific identifier in the first set; The first reporting sub-configuration is determined by the terminal based on the first set.
  12. 12. The method of claim 11, wherein in case the reporting configuration information includes or indicates a plurality of the reporting sub-configurations, at least one of an RI corresponding to a second reporting sub-configuration and at least one CQI corresponding to a second reporting sub-configuration is further included in the CSI report; The second reporting sub-configuration includes at least one of other reporting sub-configurations except the first reporting sub-configuration in the plurality of reporting sub-configurations, or the second reporting sub-configuration includes at least one of other indicated reporting sub-configurations except the first reporting sub-configuration in the plurality of reporting sub-configurations.
  13. 13. The method according to any of claims 9-11, wherein a specific CQI is further included in the CSI report in addition to the at least one CQI, the specific CQI satisfying at least one of: The specific CQI corresponds to other alternative values among the alternative values of the RI except for a first alternative value corresponding to the at least one CQI; the specific CQI corresponds to other optional values except for a second optional value among the optional values of the layer numbers corresponding to the PMI, the second optional value corresponding to the at least one CQI.
  14. 14. The method according to any one of claims 1-13, wherein the number of layers of the PMI is greater than or equal to the number of layers indicated by the RI.
  15. 15. The method according to any of claims 1-14, wherein, in case the CSI is aperiodic CSI, the terminal determines a CSI report comprising: The terminal receives first indication information from the network side equipment; the terminal determines the CSI report according to the first indication information; The first indication information is used for triggering the reporting of N pieces of aperiodic CSI, the reporting moments of the N pieces of aperiodic CSI are different, the N pieces of aperiodic CSI are all associated with the same reporting configuration information, and N is an integer greater than 1.
  16. 16. The method of claim 15, wherein each of the aperiodic CSI is associated with a second set, wherein an association between the aperiodic CSI and the second set is determined according to at least one of: an indication sequence of uplink resources; The sending time of the uplink resource; The uplink resource is used for reporting the aperiodic CSI, and the second set is a subset of at least one reporting sub-configuration included in the reporting configuration information.
  17. 17. The method of claim 16, wherein N uplink resources correspond to a same starting and length indication value SLIV in the case where N uplink resources are present and the uplink resources are physical uplink shared channels PUSCHs; Or when there are N uplink resources and the uplink resources are physical uplink control channels PUCCHs, the time-frequency resource positions of the N uplink resources in one time domain unit are the same.
  18. 18. The method of any one of claims 15-17, wherein the first indication information is further used to indicate at least one of: reporting sub-configuration of each aperiodic CSI association; The configuration information is used for bearing the uplink resources corresponding to each aperiodic CSI; reference signals for N of said aperiodic CSI measurements.
  19. 19. The method according to any of claims 1-14, wherein, in case the CSI is semi-persistent CSI, the terminal determines a CSI report comprising: the terminal receives second indication information from the network side equipment; The terminal determines the CSI report according to the second indication information; The second indication information is used for activating reporting of the semi-persistent CSI, the second indication information is also used for indicating a target configuration use sequence corresponding to the semi-persistent CSI to be reported at different reporting moments, the target configuration use sequence is one of configuration use sequences determined based on reporting sub-configurations included in reporting configuration information, and each semi-persistent CSI is associated with at least one reporting sub-configuration.
  20. 20. The method for reporting the Channel State Information (CSI) is characterized by comprising the following steps: The terminal receives first indication information or second indication information from network side equipment; the terminal sends a CSI report to the network side equipment according to the first indication information or the second indication information; the first indication information is used for triggering the reporting of N pieces of aperiodic CSI, the reporting moments of the N pieces of aperiodic CSI are different, the N pieces of aperiodic CSI are all associated with the same reporting configuration information, and N is an integer greater than 1; The second indication information is used for activating reporting of the semi-continuous CSI, and the second indication information is also used for indicating a target configuration use sequence corresponding to the semi-continuous CSI to be reported at different reporting moments, wherein the target configuration use sequence is one of configuration use sequences determined based on reporting sub-configurations included or indicated in reporting configuration information, and each semi-continuous CSI is associated with at least one reporting sub-configuration.

Description

Reporting method of Channel State Information (CSI), terminal and network equipment Technical Field The application belongs to the technical field of communication, and particularly relates to a method for reporting Channel State Information (CSI), a terminal and network side equipment. Background In the related art, taking precoding matrix indicator (Precoding matrix indicator, PMI) in CSI as an example, the network side device can infer the PMI under one port pattern according to the PMI under the other port pattern, so that when the terminal performs CSI reporting, only the PMI under one port pattern needs to be reported, and the CSI reporting overhead is reduced. However, in the CSI report provided by the related art, since the number of layers corresponding to the PMI is the same as the number of layers indicated by the Rank Indicator (RI), and the correlation between PMIs of different layers is weak, there is also a problem that the inference result is inaccurate and the performance of the communication system is affected in the case that a PMI corresponding to a large port pattern is obtained by inference from a PMI corresponding to a small port pattern. Disclosure of Invention The embodiment of the application provides a CSI reporting method, a terminal and network side equipment, which can improve the accuracy of an inference result and ensure the performance of a communication system. In a first aspect, a method for reporting CSI is provided, which includes that a terminal determines a CSI report, and the terminal sends the CSI report to a network side device, where the CSI report includes first information and a rank indication RI, and the first information is used to indicate a number of layers corresponding to a precoding matrix indication PMI included in the CSI report. The second aspect provides a method for reporting CSI, which comprises the steps that a terminal receives first indication information or second indication information from network side equipment, the terminal sends a CSI report to the network side equipment according to the first indication information or the second indication information, wherein the first indication information is used for triggering reporting of N pieces of aperiodic CSI, reporting time of the N pieces of aperiodic CSI is different, the N pieces of aperiodic CSI are all associated with the same reporting configuration information, N is an integer larger than 1, the second indication information is used for triggering reporting of semi-persistent CSI, and the second indication information is also used for indicating a target configuration using sequence corresponding to the semi-persistent CSI required to be reported at different reporting time, wherein the target configuration using sequence is one of configuration using sequences determined based on reporting sub-configurations included or indicated in the reporting configuration information, and each semi-persistent CSI is associated with at least one reporting sub-configuration. In a third aspect, a method for reporting CSI is provided, where a network side device receives a CSI report from a terminal, where the CSI report includes first information and a rank indication RI, and the first information is used to indicate a number of layers corresponding to a precoding matrix indication PMI included in the CSI report. The fourth aspect provides a method for reporting CSI, which comprises the steps that network side equipment sends first indication information or second indication information to a terminal, wherein the first indication information is used for triggering reporting of N pieces of aperiodic CSI, reporting time of the N pieces of aperiodic CSI is different, the N pieces of aperiodic CSI are all associated with the same reporting configuration information, N is an integer greater than 1, the second indication information is used for activating reporting of semi-persistent CSI, and indicates a target configuration using sequence corresponding to the semi-persistent CSI which needs to be reported at different reporting time, the target configuration using sequence is one of configuration using sequences determined based on reporting sub-configuration included or indicated in reporting configuration information, and each semi-persistent CSI is associated with at least one reporting sub-configuration. In a fifth aspect, a reporting device of CSI is provided, which includes a processing module configured to determine a CSI report, and a transmission module configured to send the CSI report to a network side device, where the CSI report includes first information and a rank indication RI, and the first information is configured to indicate a number of layers corresponding to a precoding matrix indication PMI included in the CSI report. The sixth aspect provides a reporting device of the CSI, which comprises a transmission module, wherein the transmission module is used for receiving first indication i