# US 9,882,590 B2 · Method and apparatus for cancelling interference and receiving signal 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 9,882,590 B2 - Document ID: US9882590B2 - Status: Granted - Kind: B2 - Application number: 15/129,383 - Filed: 2015-05-18 - Published: 2017-06-22 - Granted: 2018-01-30 - Earliest claimed: 2014-05-16 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Hyungtae Kim; Kijun Kim; Joonkui Ahn; Byounghoon Kim; Hanjun Park; Hyunho Lee - Web page: https://patentgrep.com/patent/US9882590B2 ## CPC - H04B 1/10: Means associated with receiver for limiting or suppressing noise or interference - H04J 11/00: Orthogonal multiplex systems, {e.g. using WALSH codes}(H04J13/00 takes precedence) - H04J 11/005: {of intercell interference} - H04W 8/24: Transfer of terminal data - H04B: TRANSMISSION - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - 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. A method for a terminal for receiving a signal by means of NAICS (Network-Assisted Interference Cancellation and Suppression) in a wireless communication system that supports carrier aggregation according to one embodiment of the preset invention comprises the steps of: transmitting terminal capability information comprising band combination information indicating the band combination supported by the terminal on the carrier aggregation; and receiving a signal on the basis of the terminal capability information, wherein the band combination information may comprise directive information indicating whether the UE support the NAICS for the band combination. ## Claims ### Claim 1 A method for receiving a signal using NAICS (Network-Assisted Interference Cancellation and Suppression) by a user equipment (UE) in a wireless communication system supporting a carrier aggregation, the method comprising: transmitting UE capability information including band combination information indicating a band combination supported by the UE on the carrier aggregation; and receiving the signal using the NAICS based on the UE capability information, wherein the band combination information includes indication information indicating whether the UE supports the NAICS for the band combination. ### Claim 2 (depends on 1) The method according to claim 1, wherein if the indication information is included in the band combination information, it is indicated that the UE supports NAICS. ### Claim 3 (depends on 1) The method according to claim 1, wherein the indication information includes a maximum number of component carriers (CCs) supporting NAICS in the band combination corresponding to the band combination information. ### Claim 4 (depends on 1) The method according to claim 1, wherein the indication information includes a maximum bandwidth supporting NAICS for the band combination corresponding to the band combination information. ### Claim 5 (depends on 1) The method according to claim 1, wherein the indication information is configured in a bitmap, and each bit of the bitmap corresponds to a combination of a maximum number of component carriers (CCs) and a maximum bandwidth. ### Claim 6 (depends on 1) The method according to claim 1, wherein if the indication information is included in the band combination information, the number of common reference signal (CRS) ports in an interference cell is determined to be 2. ### Claim 7 A user equipment (UE) for receiving a signal using NAICS (Network-Assisted Interference Cancellation and Suppression) in a wireless communication system supporting a carrier aggregation, the UE comprising: a radio frequency (RF) unit; and a processor, wherein the processor transmits UE capability information including band combination information indicating a band combination supported by the UE on the carrier aggregation, and receives the signal using the NAICS based on the UE capability information, and wherein the band combination information includes indication information indicating whether the UE supports the NAICS for the band combination. ### Claim 8 (depends on 7) The UE according to claim 7, wherein if the indication information is included in the band combination information, it is indicated that the UE supports NAICS. ### Claim 9 (depends on 7) The UE according to claim 7, wherein the indication information includes a maximum number of component carriers (CCs) supporting NAICS in the band combination corresponding to the band combination information. ### Claim 10 (depends on 7) The UE according to claim 7, wherein the indication information includes a maximum bandwidth supporting NAICS for the band combination corresponding to the band combination information. ### Claim 11 (depends on 7) The UE according to claim 7, wherein the indication information is configured in a bitmap, and each bit of the bitmap corresponds to a combination of a maximum number of component carriers (CCs) and a maximum bandwidth. ### Claim 12 (depends on 7) The UE according to claim 7, wherein if the indication information is included in the band combination information, the number of common reference signal (CRS) ports in an interference cell is determined to be 2.