# US 12,119,897 B2 · Apparatus and method for reporting channel state information in wireless communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,897 B2 - Document ID: US12119897B2 - Status: Granted - Kind: B2 - Application number: 17/594,285 - Filed: 2020-04-08 - Published: 2022-05-26 - Granted: 2024-10-15 - Earliest claimed: 2019-04-08 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Seongwon Go; Jonghyun Park; Jiwon Kang - Web page: https://patentgrep.com/patent/US12119897B2 ## CPC - H04B 7/0417: Feedback systems - H04B 7/0628: {Diversity capabilities} - H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/0617: {for beam forming} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0691: {using subgroups of transmit antennas} - H04B 7/06956: {using a selection of antenna panels} - H04B 7/06966: {using beam correspondence; using channel reciprocity, e.g. downlink beam training based on uplink sounding reference signal [SRS]} - H04L 5/00: Arrangements affording multiple use of the transmission path - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method for reporting channel state information (CSI) performed by a UE in a wireless communication system according to an embodiment of the present disclosure includes transmitting UE capability information related to a plurality of panels, receiving configuration information related to reporting of CSI, receiving a downlink reference signal (DL RS) based on the configuration information, and transmitting CSI related to a measurement result for the DL RS. ## Claims ### Claim 1 A method for reporting channel state information (CSI) performed by a UE in a wireless communication system, the method comprising: transmitting UE capability information related to a plurality of panels; receiving configuration information related to reporting of CSI related to multiple first panels among the plurality of panels; receiving a downlink reference signal (DL RS) based on the configuration information; performing measurements for the DL RS based on the multiple first panels and at least one second panel other than the multiple first panels among the plurality of panels; and transmitting CSI related to a measurement result for the DL RS, wherein, based on at least one second measurement result based on the at least one second panel being better than first measurement results based on the multiple first panels, the measurement result for the DL RS is based on the at least one second panel among the plurality of panels, and the CSI includes information indicating the at least one second panel. ### Claim 2 (depends on 1) The method of claim 1, wherein the UE capability information includes information related to beam correspondence. ### Claim 3 (depends on 2) The method of claim 2, wherein the information related to the beam correspondence is related to at least one of whether the beam correspondence is established or an operation related to the beam correspondence. ### Claim 4 (depends on 1) The method of claim 1, wherein the configuration information includes information for at least one of at least one DL RS resource or a panel ID related to the DL RS resource. ### Claim 5 (depends on 1) The method of claim 1, wherein the subsequent reporting is related to at least one of reporting after the initial report, update of the configuration information through medium access control-control element (MAC-CE) signaling, or RRC reconfiguration. ### Claim 6 (depends on 1) The method of claim 1, further comprising: receiving information related to a transmission configuration indicator (TCI); and receiving a downlink signal based on the information related to the TCI, wherein the information related to the TCI is related to the channel state information. ### Claim 7 (depends on 6) The method of claim 6, wherein the information related to the TCI includes panel information related to reception of the downlink signal. ### Claim 8 (depends on 7) The method of claim 7, wherein the downlink signal includes an SS block, a channel state information reference signal (CSI-RS), a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH). ### Claim 9 (depends on 8) The method of claim 8, wherein the downlink signal is related to at least one of radio resource management (RRM), radio link monitoring (RLM), beam failure recovery (BFR), or tracking for time-frequency synchronization. ### Claim 10 (depends on 8) The method of claim 8, wherein the panel information is related to a demodulation reference signal (DMRS) of the PDCCH or the PDSCH. ### Claim 11 A UE reporting channel state information (CSI) in a wireless communication system, comprising: one or more transceivers; one or more processors; and one or more memories operatively connectable to the one or more processors and storing instructions for performing operations when reporting of CSI is executed by the one or more processors, wherein the operations include: transmitting UE capability information related to a plurality of panels; receiving configuration information related to reporting of CSI related to multiple first panels among the plurality of panels; receiving a downlink reference signal (DL RS) based on the configuration information; performing measurements for the DL RS based on the multiple first panels and at least one second panel other than the multiple first panels among the plurality of panels; and transmitting CSI related to a measurement result for the DL RS, wherein, based on at least one second measurement result based on the at least one second panel being better than first measurement results based on the multiple first panels, the measurement result for the DL RS is based on the at least one second panel among the plurality of panels, and the CSI includes information indicating the at least one second panel. ### Claim 12 A method for reporting channel state information (CSI) performed by a base station in a wireless communication system, the method comprising: receiving UE capability information related to a plurality of panels; transmitting configuration information related to reporting of CSI related to multiple first panels among the plurality of panels; transmitting a downlink reference signal (DL RS) based on the configuration information; and receiving CSI related to a measurement result for the DL RS, wherein, based on at least one second measurement result based on the at least one second panel being better than first measurement results based on the multiple first panels, the measurement result for the DL RS is based on the at least one second panel among the plurality of panels, and the CSI includes information indicating the at least one second panel.