# US 12,113,597 B2 · Method and apparatus for transmitting and receiving 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 12,113,597 B2 - Document ID: US12113597B2 - Status: Granted - Kind: B2 - Application number: 17/760,044 - Filed: 2021-02-15 - Published: 2023-02-23 - Granted: 2024-10-08 - Earliest claimed: 2020-02-13 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Kyuseok Kim; Hyungtae Kim; Jiwon Kang; Haewook Park - Web page: https://patentgrep.com/patent/US12113597B2 ## CPC - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - Y02D 30/70: in wireless communication networks - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Disclosed are a method and apparatus for transmitting and receiving channel state information in a wireless communication system. The method for transmitting channel state information (CSI) according to an embodiment of the present disclosure, may comprise the steps of: receiving, from a base station, configuration information related to the CSI, wherein the configuration information includes information about a CSI-RS resource set; receiving a CSI-reference signal (CSI-RS) from the base station; and transmitting the CSI, to the base station, on the basis of the configuration information and the CSI-RS. The CSI-RS resource set may include M CSI-RS resource groups (M is a natural number), and the CSI may include N first CSI sets generated on the basis of a single CSI-RS resource in N mutually different CSI-RS resource groups (N≤M, N is a natural number) from among the M CSI-RS resource groups. ## Claims ### Claim 1 A method of transmitting channel state information (CSI) in a wireless communication system, the method performed by a terminal comprising: receiving configuration information related to the CSI from a base station, wherein the configuration information includes information on a CSI-RS resource set; receiving a CSI-reference signal (CSI-RS) from the base station; and transmitting the CSI to the base station based on the configuration information and the CSI-RS, wherein the CSI-RS resource set includes M (M is a natural number) CSI-RS resource groups, wherein the CSI includes N first CSI sets generated based on a single CSI-RS resource in N different (N≤M, N is a natural number) CSI-RS resource groups among the M CSI-RS resource groups. ### Claim 2 (depends on 1) The method of claim 1, wherein one or more CSI entries included in the N first CSI sets are independently determined for each first CSI set, wherein the one or more CSI entries includes at least one of a rank indicator (RI), a precoding matrix indicator (PMI), a layer indicator (LI), a channel quality indicator (CQI) and/or a CSI-RS resource indicator (CRI). ### Claim 3 (depends on 1) The method of claim 1, wherein the N CSI-RS resource groups are configured by the configuration information. ### Claim 4 (depends on 1) The method of claim 1, wherein K(K≤M, K is a natural number) CSI-RS resource groups for reporting the CSI are determined from the M CSI-RS resource groups, wherein the CSI includes K second CSI sets generated based on a CSI-RS resource combination in the K CSI-RS resource groups. ### Claim 5 (depends on 4) The method of claim 4, wherein, when a report on the first CSI set based on the single CSI-RS resource and a report on the second CSI set based on the CSI-RS resource combination collide, the report on the second CSI set based on the CSI-RS resource combination is transmitted with priority. ### Claim 6 (depends on 4) The method of claim 4, wherein, when a report on the first CSI set based on the single CSI-RS resource and a report on the second CSI set based on the CSI-RS resource combination collide, the report on the first CSI set based on the single CSI-RS resource is transmitted with priority. ### Claim 7 (depends on 4) The method of claim 4, wherein, when a report on the first CSI set based on the single CSI-RS resource and a report on the second CSI set based on the CSI-RS resource combination collide, priority for transmission is determined based on information included in the first CSI group and information included in the second CSI set. ### Claim 8 (depends on 6) The method of claim 6, the report on the first CSI set including L1 (layer 1)-SINR (signal to interference and noise ratio) or L1-RSRP (reference signal received power) is transmitted with priority over the report on the second CSI set that does not include the L1-SINR and the L1-RSRP. ### Claim 9 A terminal of transmitting channel state information (CSI) in a wireless communication system, the terminal comprising: at least one transceiver for transmitting and receiving a wireless signal; and at least one processor for controlling the at least one transceiver, wherein the at least one processor configured to: receive configuration information related to the CSI from a base station, wherein the configuration information includes information on a CSI-RS resource set; receive a CSI-reference signal (CSI-RS) from the base station; and transmit the CSI to the base station based on the configuration information and the CSI-RS, wherein the CSI-RS resource set includes M (M is a natural number) CSI-RS resource groups, wherein the CSI includes N first CSI sets generated based on a single CSI-RS resource in N different (N≤M, N is a natural number) CSI-RS resource groups among the M CSI-RS resource groups. ### Claim 10 (depends on 9) The terminal of claim 9, wherein one or more CSI entries included in the N first CSI sets are independently determined for each first CSI set, wherein the one or more CSI entries includes at least one of a rank indicator (RI), a precoding matrix indicator (PMI), a layer indicator (LI), a channel quality indicator (CQI) and/or a CSI-RS resource indicator (CRI). ### Claim 11 (depends on 9) The terminal of claim 9, wherein the N CSI-RS resource groups are configured by the configuration information. ### Claim 12 (depends on 9) The terminal of claim 9, wherein K(K≤M, K is a natural number) CSI-RS resource groups for reporting the CSI are determined from the M CSI-RS resource groups, wherein the CSI includes K second CSI sets generated based on a CSI-RS resource combination in the K CSI-RS resource groups. ### Claim 13 (depends on 12) The terminal of claim 12, wherein, when a report on the first CSI set based on the single CSI-RS resource and a report on the second CSI set based on the CSI-RS resource combination collide, the report on the second CSI set based on the CSI-RS resource combination is transmitted with priority. ### Claim 14 (depends on 12) The terminal of claim 12, wherein, when a report on the first CSI set based on the single CSI-RS resource and a report on the second CSI set based on the CSI-RS resource combination collide, the report on the first CSI set based on the single CSI-RS resource is transmitted with priority. ### Claim 15 (depends on 12) The terminal of claim 12, wherein, when a report on the first CSI set based on the single CSI-RS resource and a report on the second CSI set based on the CSI-RS resource combination collide, priority for transmission is determined based on information included in the first CSI group and information included in the second CSI set. ### Claim 16 At least one non-transitory computer-readable medium storing at least one instruction, wherein the at least one instruction executable by at least one processor controls a device to: receive configuration information related to the CSI from a base station, wherein the configuration information includes information on a CSI-RS resource set; receive a CSI-reference signal (CSI-RS) from the base station; and transmit the CSI to the base station based on the configuration information and the CSI-RS, wherein the CSI-RS resource set includes M (M is a natural number) CSI-RS resource groups, wherein the CSI includes N first CSI sets generated based on a single CSI-RS resource in N different (N≤M, N is a natural number) CSI-RS resource groups among the M CSI-RS resource groups.