# US 10,320,465 B2 · Method for 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 10,320,465 B2 - Document ID: US10320465B2 - Status: Granted - Kind: B2 - Application number: 15/739,929 - Filed: 2016-07-08 - Published: 2018-07-12 - Granted: 2019-06-11 - Earliest claimed: 2015-07-10 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jonghyun Park; Kijun Kim; Haewook Park; Youngtae Kim - Web page: https://patentgrep.com/patent/US10320465B2 ## CPC - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04B 7/0417: Feedback systems - H04B 7/06: at the transmitting station - H04B 7/0628: {Diversity capabilities} - H04B 7/0632: {Channel quality parameters, e.g. channel quality indicator [CQI]} - H04L 5/00: Arrangements affording multiple use of the transmission path - 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 5/0057: {Physical resource allocation for CQI} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04L 5/0023: {Time-frequency-space} - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - H04L 5/0039: {Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another} - 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 The present specification relates to a method for reporting channel state information (CSI) in a wireless communication system, comprising the steps of: receiving, from a base station, CSI-reference signal (RS) resource configuration information for indicating a resource configuration of a CSI-RS using more than eight antenna ports; receiving, from the base station, a CSI-RS using the more than eight antenna ports based on the received CSI-RS resource configuration information; and reporting, to the base station, channel state information (CSI) based on the received CSI-RS. Therefore, mutual compatibility with a legacy system may be obtained and resources may be more efficiently utilized. ## Claims ### Claim 1 A method for receiving, by a user equipment (UE), a channel state information reference signal (CSI-RS) in a wireless communication system, the method comprising: receiving, from a base station, CSI-RS resource configuration information related to a numbering for a plurality of CSI-RS resources through a radio resource control (RRC) signaling, wherein the plurality of CSI-RS resources are aggregated to obtain a total number of antenna ports for the CSI-RS using more than eight antenna ports, and wherein the CSI-RS resource configuration information includes first CSI-RS configuration information and at least one second CSI-RS configuration information; and determining numbers for the plurality of CSI-RS resources based on the received CSI-RS resource configuration information, wherein a specific CSI-RS resource among the plurality of CSI-RS resources corresponds to a value configured in the first CSI-RS configuration information, and at least one CSI-RS resource except the specific CSI-RS resource among the plurality of CSI-RS resources corresponds to a value configured in the second CSI-RS configuration information. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one CSI-RS resource sequentially corresponds to values of entries configured in the second CSI-RS configuration information. ### Claim 3 (depends on 2) The method of claim 2, wherein a k-th CSI-RS resource, which is a CSI-RS resource of a specific order, of the at least one CSI-RS resource corresponds to a value of a k-th entry, which is an entry of a specific order, configured in the second CSI-RS configuration information. ### Claim 4 (depends on 1) The method of claim 1, wherein the specific CSI-RS resource is a CSI-RS resource related to a lowest number among the plurality of CSI-RS resources. ### Claim 5 (depends on 1) The method of claim 1, wherein the first CSI-RS configuration information is resourceConfig-r11 related to a CSI-RS configuration indicated by csi-RS-ConfigNZPId-r11 used to identify the CSI-RS resource configuration, and the second CSI-RS configuration information is nzp-resourceConfigList-r13 related to a CSI-RS resource. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining numbers for the total antenna ports. ### Claim 7 (depends on 6) The method of claim 6, wherein the numbers for the total antenna ports are determined using CSI-RS resource number information and CSI-RS resource antenna port number information. ### Claim 8 (depends on 1) The method of claim 1, wherein the plurality of CSI-RS resources are included in a same subframe. ### Claim 9 A user equipment (UE) for receiving a channel state information reference signal (CSI-RS) in a wireless communication system, the UE comprising: a transceiver transmitting and receiving a radio signal; and a processor functionally connected to the transceiver and controlling the UE, wherein the processor is configured to: receive, from a base station, CSI-RS resource configuration information related to a numbering for a plurality of CSI-RS resources through a radio resource control (RRC) signaling, wherein the plurality of CSI-RS resources are aggregated to obtain a total number of antenna ports for the CSI-RS using more than eight antenna ports, and wherein the CSI-RS resource configuration information includes first CSI-RS configuration information and at least one second CSI-RS configuration information, and determine numbers for the plurality of CSI-RS resources based on the received CSI-RS resource configuration information, wherein a specific CSI-RS resource among the plurality of CSI-RS resources corresponds to a value configured in the first CSI-RS configuration information, and at least one CSI-RS resource except the specific CSI-RS resource among the plurality of CSI-RS resources corresponds to a value configured in the second CSI-RS configuration information. ### Claim 10 (depends on 9) The UE of claim 9, wherein the at least one CSI-RS resource sequentially corresponds to values of entries configured in the second CSI-RS configuration information. ### Claim 11 (depends on 10) The UE of claim 10, wherein a k-th CSI-RS resource, which is a CSI-RS resource of a specific order, of the at least one CSI-RS resource corresponds to a value of a k-th entry, which is an entry of a specific order, configured in the second CSI-RS configuration information. ### Claim 12 (depends on 9) The UE of claim 9, wherein the specific CSI-RS resource is a CSI-RS resource related to a lowest number among the plurality of CSI-RS resources. ### Claim 13 (depends on 9) The UE of claim 9, wherein the first CSI-RS configuration information is resourceConfig-r11 related to a CSI-RS configuration indicated by csi-RS-ConfigNZPId-r11 used to identify the CSI-RS resource configuration, and the second CSI-RS configuration information is nzp-resourceConfigList-r13 related to a CSI-RS resource. ### Claim 14 (depends on 9) The UE of claim 9, wherein the processor determines numbers for the total antenna ports using CSI-RS resource number information and CSI-RS resource antenna port number information. ### Claim 15 (depends on 9) The UE of claim 9, wherein the plurality of CSI-RS resources are included in a same subframe.