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CN-115362730-B - Terminal, wireless communication method and base station

CN115362730BCN 115362730 BCN115362730 BCN 115362730BCN-115362730-B

Abstract

The terminal according to one aspect of the present disclosure includes a receiving unit that receives at least one setting for measurement and reporting of Channel State Information (CSI) for a plurality of transmission/reception points, and a control unit that performs measurement and reporting of the CSI based on the setting. According to an aspect of the present disclosure, measurement and reporting of CSI for multiple panels/TRPs can be performed appropriately.

Inventors

  • MATSUMURA YUSUKE
  • NAGATA AKIRA
  • GUO SHAOZHEN
  • WANG JING
  • HOU XIAOLIN

Assignees

  • 株式会社NTT都科摩

Dates

Publication Date
20260505
Application Date
20200204

Claims (5)

  1. 1. A terminal, comprising: a receiving unit for receiving a plurality of sets of resources for channel measurement associated with a plurality of transmission/reception points, that is, a plurality of TRPs, and A control unit that decides one of respective reports for the plurality of TRPs and 1 report for the plurality of TRPs based on the setting and a higher-layer parameter, In case the setting comprises a first set of the resources with the plurality of groups and a second set of CSI-interference measurement resources, CSI-IM resources, the determined report comprises CSI-reference signal resources, CSI-RS resource indicator k, which corresponds to the k+1th resource in the first set and the k+1th resource in the second set.
  2. 2. The terminal of claim 1, wherein, The plurality of TRPs are used for non-coherent joint transmission.
  3. 3. A wireless communication method for a terminal includes: A step of receiving a plurality of sets of channel measurement resources associated with a plurality of transmission/reception points, that is, a plurality of TRPs, and A step of deciding one of respective reports for the plurality of TRPs and 1 report for the plurality of TRPs based on the setting and a higher layer parameter, In case the setting comprises a first set of the resources with the plurality of groups and a second set of CSI-interference measurement resources, CSI-IM resources, the determined report comprises CSI-reference signal resources, CSI-RS resource indicator k, which corresponds to the k+1th resource in the first set and the k+1th resource in the second set.
  4. 4. A base station, comprising: A transmitting unit for transmitting a plurality of sets of resources for channel measurement associated with a plurality of transmission/reception points, that is, a plurality of TRPs, and A control unit that decides reception of one of each report for the plurality of TRPs and 1 report for the plurality of TRPs based on the setting and a higher-layer parameter, In case the setting comprises a first set of the resources with the plurality of groups and a second set of CSI-interference measurement resources, CSI-IM resources, the determined report comprises CSI-reference signal resources, CSI-RS resource indicator k, which corresponds to the k+1th resource in the first set and the k+1th resource in the second set.
  5. 5. A system having a terminal and a base station, The terminal has: a receiving unit for receiving a plurality of sets of resources for channel measurement associated with a plurality of transmission/reception points, that is, a plurality of TRPs, and A control unit that decides one of respective reports for the plurality of TRPs and 1 report for the plurality of TRPs based on the setting and a higher-layer parameter, In case the setting comprises a first set of the resources with the plurality of groups and a second set of CSI-interference measurement resources, CSI-IM resources, the determined report comprises CSI-reference signal resources, CSI-RS resource indicator k, which corresponds to the (k + 1) th resource in the first set and the (k + 1) th resource in the second set, The base station transmits the setting.

Description

Terminal, wireless communication method and base station Technical Field The present disclosure relates to a terminal, a wireless communication method, and a base station in a next generation mobile communication system. Background In a universal mobile telecommunications system (Universal Mobile Telecommunications System (UMTS)) network, long term evolution (Long Term Evolution (LTE)) is standardized for the purpose of further high-speed data rates, low latency, and the like (non-patent document 1). Further, for the purpose of further large capacity, high altitude, and the like of LTE (third generation partnership project (Third Generation Partnership Project (3 GPP)) Release (rel.)) versions 8 and 9, LTE-Advanced (3 GPP rel.10-14) is standardized. Subsequent systems of LTE (e.g., also referred to as fifth generation mobile communication system (5 th generation mobile communication system (5G)), 5g+ (plus), new Radio (NR)), 3gpp rel.15 later, and the like are also being studied. Prior art literature Non-patent literature Non-patent document 1：3GPP TS 36.300V8.12.0"Evolved Universal Terrestrial Radio Access(E-UTRA)and Evolved Universal Terrestrial Radio Access Network(E-UTRAN);Overall description;Stage 2(Release 8)",2010, month 4 Disclosure of Invention Problems to be solved by the invention In future wireless communication systems (e.g., NR), a User terminal (UE) is under study to control a transmission/reception process based on information about Quasi Co-Location (QCL). Further, in NR, one or more Transmission/Reception points (TRP) are being studied (multi-TRP) for DL Transmission (e.g., PDSCH Transmission) to a UE using one or more panels (multi-panels). However, in the NR specifications so far, the multi-panel/TRP is not considered, and therefore, it is not obvious how to measure and report CSI in the case of using the multi-panel/TRP. If the measurement and reporting of CSI are not properly performed, there is a concern that system performance is degraded, such as reduced throughput. It is therefore an object of the present disclosure to provide a terminal, a wireless communication method, and a base station that properly perform measurement and reporting of CSI for multiple panels/TRPs. Means for solving the problems The terminal according to one aspect of the present disclosure includes a receiving unit that receives at least one setting for measurement and reporting of Channel State Information (CSI) for a plurality of transmission/reception points, and a control unit that performs measurement and reporting of the CSI based on the setting. Effects of the invention According to an aspect of the present disclosure, measurement and reporting of CSI for multiple panels/TRPs can be performed appropriately. Drawings Fig. 1 is a diagram showing an example of CSI report setting in rel.15nr. Fig. 2A to 2D are diagrams showing an example of PDSCH transmission using multiple TRPs. Fig. 3 is a diagram showing an example of CSI report setting according to embodiment 1. Fig. 4 is a diagram showing a first example of a structure of CSI report setting. Fig. 5 is a diagram showing a second example of a structure of CSI report setting. Fig. 6 is a diagram showing a third example of a structure of CSI report setting. Fig. 7 is a diagram showing an example of CSI report setting related to interference precondition association 1 in embodiments 1 to 2. Fig. 8 is a diagram showing an example of setting of CSI report #1 for TRP #1 according to interference precondition association 1 in embodiment 1-2. Fig. 9 is a diagram showing an example of setting of CSI report #2 for TRP #2 according to interference precondition association 1 in embodiment 1-2. Fig. 10A and 10B are diagrams showing an example of CSI report setting related to interference precondition association 2 according to embodiments 1 to 2. Fig. 11 is a diagram showing an example of CSI fields related to interference precondition association 2 in embodiments 1-2. Fig. 12 is a diagram showing another example of CSI fields related to interference precondition association 2 in embodiments 1-2. Fig. 13 is a diagram showing an example of setting of CSI report #1 for TRP #1 according to interference precondition association 2 in embodiment 1-2. Fig. 14 is a diagram showing an example of setting of CSI report #2 for TRP #2 according to interference precondition association 2 in embodiment 1-2. Fig. 15 is a diagram showing an example of CSI report setting according to embodiment 2-1. Fig. 16 is a diagram showing an example of CSI report setting related to interference precondition association 1 in embodiment 2-2. Fig. 17 is a diagram showing an example of CSI fields related to interference precondition association 1 in embodiment 2-2. Fig. 18 is a diagram showing another example of CSI fields related to interference precondition association 1 in embodiment 2-2. Fig. 19 is a diagram showing an example of setting of CSI report #1 for interference premise #1 according to