# US 2019/0379503 A1 · Method for measuring and reporting channel state information in wireless communication system and device therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0379503 A1 - Document ID: US20190379503A1 - Status: Published application - Kind: A1 - Application number: 16/483,374 - Filed: 2018-01-31 - Published: 2019-12-12 - Earliest claimed: 2017-02-03 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jiwon KANG; Kijun KIM; Jonghyun PARK - Web page: https://patentgrep.com/patent/US20190379503A1 ## CPC - 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 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping} - H04B 7/088: {using beam selection} - H04L 1/0026: {Transmission of channel quality indication} - H04L 1/0027: {Scheduling of signalling, e.g. occurrence thereof} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - Y02D 30/70: in wireless communication networks - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - 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 This specification provides a method for measuring and reporting channel state information in a wireless communication system. Specifically, a method for reporting, by a user equipment, channel state information (CSI) in a wireless communication system includes: receiving CSI configuration information related to a CSI reporting procedure; receiving one or more channel state information (CSI)-reference signals (CSI-RSs); and reporting the CSI determined by measurement values estimated by the one or more CSI-RSs, in which first triggering for transmission of the one or more CSI-RSs and second triggering for reporting of the CSI may be indicated through downlink control information. ## Claims ### Claim 1 A method for reporting, by a user equipment, channel state information (CSI) in a wireless communication system, the method comprising: receiving CSI configuration information related to a CSI reporting procedure, wherein the CSI configuration information includes information representing measurement setting for the CSI, information representing reporting setting for the CSI, and information representing resource setting for the CSI; receiving one or more channel state information (CSI)-reference signals (CSI-RSs) based on the information representing the resource setting; and reporting the CSI determined by measurement values estimated by the one or more CSI-RSs, based on the information representing the measurement setting and the information representing the reporting setting, wherein first triggering for transmission of the one or more CSI-RSs and second triggering for reporting of the CSI are indicated through downlink control information. ### Claim 2 (depends on 1) The method of claim 1, wherein the first triggering and the second triggering are simultaneously indicated for the UE. ### Claim 3 (depends on 2) The method of claim 2, wherein the first triggering and the second triggering are indicated for the UE in the same slot. ### Claim 4 (depends on 1) The method of claim 1, wherein the first triggering and the second triggering are indicated through specific downlink control information, and wherein the specific downlink control information includes a first field for the first triggering and a second field for the second triggering. ### Claim 5 (depends on 4) The method of claim 4, wherein the first field indicates indexes for one or more CSI-RS resources related to the first triggering, and wherein the second field indicates indexes for one or more CSI-RS reporting settings related to the second triggering. ### Claim 6 (depends on 1) The method of claim 1, wherein the first triggering and the second triggering are indicated through specific downlink control information, wherein the specific downlink control information includes flag information indicating the first triggering or the second triggering, and wherein the indexes for one or more CSI-RS resources related to the first triggering or the indexes for one or more CSI reporting settings related to the second triggering are indicated in a common field included in the specific downlink control information. ### Claim 7 (depends on 6) The method of claim 6, wherein the flag information further indicates whether joint triggering between the first triggering and the second triggering is performed. ### Claim 8 (depends on 7) The method of claim 7, wherein indication information indicating the indexes for one or more CSI-RS resources related to the first triggering and the indexes for one or more CSI reporting settings related to the second triggering is configured to be indicated in the common field. ### Claim 9 (depends on 1) The method of claim 1, wherein the first triggering is indicated through first downlink control information including the first field for the first triggering, and wherein the second triggering is indicated through second downlink control information including the second field for the second triggering. ### Claim 10 (depends on 1) The method of claim 1, wherein the one or more CSI-RSs are received through one or more CSI-RSs which belong to at least one CSI-RS resource setting included in the information representing the resource setting, and wherein the CSI is reported through one or more CSI reporting settings in CSI measurement setting included in the information representing the measurement setting. ### Claim 11 (depends on 10) The method of claim 10, wherein when multiple CSI-RS resource settings are preconfigured as multiple links for the one or more CIS reporting settings, information representing ON or OFF for at least one link among the multiple links is indicated together with the second triggering. ### Claim 12 (depends on 10) The method of claim 10, wherein the information representing the measurement setting further includes information indicating a use of the at least one CSI-RS resource setting, and wherein the use of the at least one CSI-RS resource setting is one of channel measurement, interference measurement, or rate matching. ### Claim 13 (depends on 10) The method of claim 10, wherein the information representing the measurement setting further includes swapping information changing the use of the at least one CSI-RS resource setting, and wherein the use of the at least one CSI-RS resource setting is one of the channel measurement, the interference measurement, or the rate matching. ### Claim 14 (depends on 1) The method of claim 1, wherein the one or more CSI-RSs are configured to be aperiodically transmitted, and wherein the CSI is configured to be aperiodically reported. ### Claim 15 A UE reporting channel state information (CSI) in a wireless communication system, the UE comprising: a radio frequency (RF) module for transmitting and receiving a radio signal; and a processor functionally connected with the RF module, wherein the processor controls to receive CSI configuration information related to a CSI reporting procedure, wherein the CSI configuration information includes information representing measurement setting for the CSI, information representing reporting setting for the CSI, and information representing resource setting for the CSI, receive one or more channel state information (CSI)-reference signals (CSI-RSs) based on the information representing the resource setting, and report the CSI determined by measurement values estimated by the one or more CSI-RSs, based on the information representing the measurement setting and the information representing the reporting setting, and wherein first triggering for transmission of the one or more CSI-RSs and second triggering for reporting of the CSI are indicated through downlink control information.