# US 11,910,409 B2 · Method and apparatus for transmitting and receiving information related to resource collision in NR V2X > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,409 B2 - Document ID: US11910409B2 - Status: Granted - Kind: B2 - Application number: 18/169,501 - Filed: 2023-02-15 - Published: 2023-06-29 - Granted: 2024-02-20 - Earliest claimed: 2020-10-30 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Daesung Hwang; Seungmin Lee; Hanbyul Seo - Web page: https://patentgrep.com/patent/US11910409B2 ## CPC - H04W 72/25: between terminals via a wireless link, e.g. sidelink - H04W 72/40: Resource management for direct mode communication, e.g. D2D or sidelink - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04W 8/26: Network addressing or numbering for mobility support - H04W 92/18: between terminal devices - H04L 1/1685: {the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 2001/0093: {Point-to-multipoint} - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Provided are a method by which a first apparatus performs wireless communication, and an apparatus supporting same. The method may comprise the steps of: receiving, via a first physical sidelink control channel (PSCCH), first sidelink control information (SCI) including information related to a plurality of sidelink (SL) resources which have been reserved by a second apparatus; receiving, via a second PSCCH, second SCI including information related to a plurality of SL resources which have been reserved by a third apparatus, wherein a first SL resource from among the plurality of SL resources which have been reserved by the second apparatus overlaps a second SL resource from among the plurality of SL resources which have been reserved by the third apparatus; determining a physical sidelink feedback channel (PSFCH) resource related to the first SL resource and the second SL resource; and transmitting, to the second apparatus or the third apparatus, information related to the overlap, on the basis of the PSFCH resource. ## Claims ### Claim 1 A method for performing wireless communication by a first device, the method comprising: receiving, through a first physical sidelink control channel (PSCCH), first sidelink control information (SCI) including a first priority value and information related to a first resource reserved by a second device; receiving, through a second PSCCH, second SCI including a second priority value and information related to a second resource reserved by a third device; determining that the first resource and the second resource overlap; determining a physical sidelink feedback channel (PSFCH) resource for PSFCH transmission with conflict information corresponding to the first resource; and performing the PSFCH transmission with the conflict information to the second device. ### Claim 2 (depends on 1) The method of claim 1, wherein a priority value for the PSFCH transmission with the conflict information is equal to a smallest priority value determined by the first SCI and the second SCI. ### Claim 3 (depends on 2) The method of claim 2, wherein the priority value for the PSFCH transmission with the conflict information is equal to the smallest priority value among the first priority value determined by the first SCI and the second priority value determined by the second SCI. ### Claim 4 (depends on 1) The method of claim 1, wherein the first SL resource belongs to a slot after a slot in which the first SCI is received, and the second resource belongs to a slot after a slot in which the second SCI is received. ### Claim 5 (depends on 1) The method of claim 1, wherein, based on that the first priority value is greater than the second priority value, the PSFCH transmission with the conflict information is performed to the second device. ### Claim 6 (depends on 1) The method of claim 1, wherein a priority value for PSFCH reception with the conflict information is equal to the first priority value determined by the first SCI. ### Claim 7 (depends on 1) The method of claim 1, wherein, based on that the first priority value is equal to the second priority value, the PSFCH transmission with the conflict information is performed to the second device or the third device. ### Claim 8 (depends on 1) The method of claim 1, wherein a set of PSFCH resources for the conflict information and a set of PSFCH resources for sidelink (SL) hybrid automatic repeat request (HARQ)-ACK information are configured, respectively. ### Claim 9 (depends on 1) The method of claim 1, wherein a resource for transmission or reception of the first device overlaps with the first resource or the second resource. ### Claim 10 (depends on 1) The method of claim 1, wherein the conflict information represents a conflict between transmissions by the second device and the third device on the first resource and the second resource. ### Claim 11 (depends on 1) The method of claim 1, wherein the conflict information represents that the first device cannot perform SL reception on the first resource or the second resource. ### Claim 12 (depends on 1) The method of claim 1, wherein a domain of the PSFCH resource includes a time domain, a frequency domain and a code domain. ### Claim 13 (depends on 1) The method of claim 1, wherein the first resource reserved by the second device is a resource for the second device to perform SL transmission to the first device or the third device, and wherein the second resource reserved by the third device is a resource for the third device to perform SL transmission to the first device or the second device. ### Claim 14 A first device adapted to perform wireless communication, the first device comprising: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising: receiving, through a first physical sidelink control channel (PSCCH), first sidelink control information (SCI) including a first priority value and information related to a first resource reserved by a second device; receiving, through a second PSCCH, second SCI including a second priority value and information related to a second resource reserved by a third device; determining that the first resource and the second resource overlap; determining a physical sidelink feedback channel (PSFCH) resource for PSFCH transmission with conflict information corresponding to the first resource; and performing the PSFCH transmission with the conflict information to the second device. ### Claim 15 (depends on 14) The first device of claim 14, wherein a priority value for the PSFCH transmission with the conflict information is equal to a smallest priority value determined by the first SCI and the second SCI. ### Claim 16 (depends on 15) The first device of claim 15, wherein the priority value for the PSFCH transmission with the conflict information is equal to the smallest priority value among the first priority value determined by the first SCI and the second priority value determined by the second SCI. ### Claim 17 (depends on 14) The first device of claim 14, wherein a priority value for PSFCH reception with the conflict information is equal to the first priority value determined by the first SCI. ### Claim 18 A processing device adapted to control a first device, the processing device comprising: at least one processor; and at least one memory connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising: receiving, through a first physical sidelink control channel (PSCCH), first sidelink control information (SCI) including a first priority value and information related to a first resource reserved by a second device; receiving, through a second PSCCH, second SCI including a second priority value and information related to a second resource reserved by a third device; determining that the first resource and the second resource overlap; determining a physical sidelink feedback channel (PSFCH) resource for PSFCH transmission with conflict information corresponding to the first resource; and performing the PSFCH transmission with the conflict information to the second device. ### Claim 19 (depends on 18) The processing device of claim 18, wherein a priority value for the PSFCH transmission with the conflict information is equal to a smallest priority value determined by the first SCI and the second SCI. ### Claim 20 (depends on 19) The processing device of claim 19, wherein the priority value for the PSFCH transmission with the conflict information is equal to the smallest priority value among the first priority value determined by the first SCI and the second priority value determined by the second SCI.