# US 2019/0356372 A1 · Method and device for transmitting control 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 2019/0356372 A1 - Document ID: US20190356372A1 - Status: Published application - Kind: A1 - Application number: 16/529,975 - Filed: 2019-08-02 - Published: 2019-11-21 - Earliest claimed: 2010-07-19 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Seunghee HAN; Jaehoon CHUNG; Hyunwoo LEE; Moonil LEE; Hyunsoo KO - Web page: https://patentgrep.com/patent/US20190356372A1 ## CPC - H04L 1/0026: {Transmission of channel quality indication} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]} - H04L 1/0029: {Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling (power control H04W52/04)} - H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)} - H04L 1/1671: {the supervisory signal being transmitted together with control information} - H04L 5/0041: {Frequency-non-contiguous} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0057: {Physical resource allocation for CQI} - H04L 27/2636: {with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]} - H04W 72/56: based on priority criteria - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 24/02: Arrangements for optimising operational condition - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} - 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) ## Abstract The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for reporting CSI in a wireless communication system, the method comprising: a step for configuring a plurality of serving cells; and a step for reporting the CSI of only one serving cell in a corresponding subframe, wherein the step for reporting the CSI of only one serving cell comprises: excluding reporting the CSI of a lower priority when CSI reports of the plurality of serving cells in the corresponding subframe collide; and excluding reporting the CSI of serving cells other than the serving cell having the smallest index when the CSI reports of different serving cells having the same priority in the corresponding subframe collide. ## Claims ### Claim at position 1 1-12. (canceled) ### Claim 13 A method for transmitting a periodic channel state information (CSI) report by a user equipment (UE) in a wireless communication system, the method comprising: receiving configuration information on periodic CSI reports for a primary cell (PCell) and at least one secondary cell (SCell); and transmitting a periodic CSI report with a wideband (WB) channel quality indicator (CQI) in a subframe according to the configuration information, based on whether a periodic CSI report with a subband (SB) CQI and the periodic CSI report with the WB CQI are collided in the subframe, wherein the periodic CSI report with the SB CQI is dropped by the UE based on whether the periodic CSI report with the SB CQI and the periodic CSI report with the WB CQI are collided in the subframe. ### Claim 14 (depends on 13) The method of claim 13, when the periodic CSI report with the SB CQI and the periodic CSI report with the WB CQI are collided in the subframe, wherein the periodic CSI report with the WB CQI has higher priority than the periodic CSI report with the SB CQI, wherein the SB CQI is obtained from the PCell, and wherein the WB CQI is obtained from an SCell. ### Claim 15 (depends on 13) The method of claim 13, when a periodic CSI report with a rank indicator (RI) and either the periodic CSI report with the SB CQI or the WB CQI are collided in the subframe, wherein the periodic CSI report with the SB CQI or the WB CQI has lower priority and is dropped by the UE. ### Claim 16 (depends on 15) The method of claim 15, further comprising: transmitting the periodic CSI report with the RI, and the periodic CSI report with the RI has higher priority over the periodic CSI report with the SB CQI or the WB CSI, wherein the WB CQI or the SB CQI is obtained from the PCell, and wherein the RI is obtained from an SCell. ### Claim 17 (depends on 13) The method of claim 13, when a periodic CSI report with a rank indicator (RI) of the PCell and a periodic CSI report with an RI of an SCell are collided in the subframe, wherein the periodic CSI report with the RI of the SCell has lower priority and is dropped by the UE. ### Claim 18 (depends on 17) The method of claim 17, further comprising: when the periodic CSI report with the RI of the SCell and a periodic CSI report with an RI of another SCell are collided in the subframe, transmitting according to cell indices of the SCell and the another SCell. ### Claim 19 (depends on 18) The method of claim 18, wherein a CSI report including an RI of a higher indexed SCell among the SCell and the another SCell is dropped by the UE. ### Claim 20 (depends on 13) The method of claim 13, wherein the configuration information comprises information on a reporting period of each of the periodic CSI reports. ### Claim 21 (depends on 13) A non-transitory computer readable medium recorded thereon a program for executing the method of claim 13. ### Claim 22 A user equipment (UE) for transmitting periodic channel state information (CSI) report in a wireless communication system, the UE comprising: a transceiver; and a processor, operatively coupled to the transceiver, wherein the processor is configured to: control the transceiver to receive configuration information on periodic CSI reports for a primary cell (PCell) and at least one secondary cell (SCell), and control the transceiver to transmit a periodic CSI report with a wideband (WB) channel quality indicator (CQI) in a subframe according to the configuration information, based on whether a periodic CSI report with a subband (SB) CQI and the periodic CSI report with the WB CQI are collided in the subframe, wherein the periodic CSI report with the SB CQI is dropped by the processor based on whether the periodic CSI report with the SB CQI and the periodic CSI report with the WB CQI are collided in the subframe. ### Claim 23 (depends on 22) The UE of claim 22, when the periodic CSI report with the SB CQI and the periodic CSI report with the WB CQI are collided in the subframe, wherein the periodic CSI report with the WB CQI has higher priority than the periodic CSI report with the SB CQI, wherein the SB CQI is obtained from the PCell, and wherein the WB CQI is obtained from an SCell. ### Claim 24 (depends on 22) The UE of claim 22, when a periodic CSI report with a rank indicator (RI) and either the periodic CSI report with the SB CQI or the WB CQI are collided in the subframe, wherein the periodic CSI report with the SB CQI or the WB CQI has lower priority and is dropped by the processor. ### Claim 25 (depends on 24) The UE of claim 24, wherein the processor further configured to: control the transceiver to transmit the periodic CSI report with the RI, and the periodic CSI report with the RI has higher priority over the periodic CSI report with the SB CQI or the WB CSI, wherein the WB CQI or the SB CQI is obtained from the PCell, and wherein the RI is obtained from an SCell. ### Claim 26 (depends on 22) The UE of claim 22, when a periodic CSI report with a rank indicator (RI) of the PCell and a periodic CSI report with an RI of an SCell are collided in the subframe, wherein the periodic CSI report with the RI of the SCell has lower priority and is dropped by the processor. ### Claim 27 (depends on 26) The UE of claim 26, wherein the processor further configured to: control the transceiver to transmit according to cell indices of the SCell and the another SCell when the periodic CSI report with the RI of the SCell and a periodic CSI report with an RI of another SCell are collided in the subframe. ### Claim 28 (depends on 27) The UE of claim 27, wherein a CSI report including an RI of a higher indexed SCell among the SCell and the another SCell is dropped by the processor. ### Claim 29 (depends on 22) The UE of claim 22, wherein the configuration information comprises information on a reporting period of each of the periodic CSI reports.