# US 10,873,838 B2 · Method and apparatus for transmitting PSFCH 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 10,873,838 B2 - Document ID: US10873838B2 - Status: Granted - Kind: B2 - Application number: 16/824,557 - Filed: 2020-03-19 - Published: 2020-09-10 - Granted: 2020-12-22 - Earliest claimed: 2019-03-05 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Daesung Hwang; Hanbyul Seo; Seungmin Lee - Web page: https://patentgrep.com/patent/US10873838B2 ## CPC - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04L 1/1614: {using bitmaps} - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - H04L 5/0092: {Indication of how the channel is divided} - H04L 27/2607: {Cyclic extensions} - H04W 72/02: Selection of wireless resources by user or terminal - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 27/2602: {Signal structure} - H04L 27/26025: {Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking (allocating sub-channels of the transmission path H04L5/003)} - H04W 4/02: Services making use of location information - H04W 4/027: {using movement velocity, acceleration information} - H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services - H04W 4/44: for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H] - H04W 4/46: for vehicle-to-vehicle communication [V2V] - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - H04W 76/14: Direct-mode setup - H04W 92/18: between terminal devices - 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 A method in which a first apparatus performs wireless communication and an apparatus supporting the same are provided. The method may include: receiving information related to a physical sidelink feedback channel (PSFCH) resource from a base station; receiving a physical sidelink shared channel (PSSCH) from a second apparatus; and transmitting a PSFCH related to the PSSCH to the second apparatus. Here, the information related to the PSFCH resource may include, for example, information related to a resource block (RB) available for the first apparatus to transmit the PSFCH. ## Claims ### Claim 1 A method in which a first apparatus performs wireless communication, the method comprising: receiving, from a base station, first information related to a set of resource blocks (RBs) available for the first apparatus to transmit a physical sidelink feedback channel (PSFCH) and second information related to a number of cyclic shifts available for the first apparatus to transmit the PSFCH; receiving, from a second apparatus, a physical sidelink shared channel (PSSCH); determining a PSFCH resource related the PSSCH, based on the first information related to the set of RBs and the second information related to the number of cyclic shifts; and transmitting, to the second apparatus, Hybrid Automatic Repeat Request (HARQ) information based on the PSFCH resource. ### Claim 2 (depends on 1) The method of claim 1, wherein the HARQ information is transmitted by using the PSFCH resource to the second apparatus. ### Claim 3 (depends on 1) The method of claim 1, further comprising: applying one cyclic shift among the number of cyclic shifts to the HARQ information. ### Claim 4 (depends on 3) The method of claim 3, wherein the number of cyclic shifts is a number of cyclic shift pairs. ### Claim 5 (depends on 1) The method of claim 1, wherein the set of RBs available to transmit the PSFCH is configured for the first apparatus in a resource pool. ### Claim 6 (depends on 1) The method of claim 1, wherein the first information related to the set of RBs available to transmit the PSFCH is a bitmap. ### Claim 7 (depends on 6) The method of claim 6, wherein each bit of the bitmap indicates each RB in a resource pool. ### Claim 8 (depends on 7) The method of claim 7, wherein an RB related to 1 of the bitmap is an RB available to transmit the PSFCH, and an RB related to 0 of the bitmap is an RB unavailable to transmit the PSFCH. ### Claim 9 (depends on 1) The method of claim 1, further comprising: receiving, from the base station, third information related to a slot available for the first apparatus to transmit the PSFCH. ### Claim 10 (depends on 1) The method of claim 1, further comprising: receiving, from the base station, fourth information related to a PSFCH format available for the first apparatus to transmit the PSFCH. ### Claim 11 (depends on 1) The method of claim 1, wherein the PSSCH includes a plurality of PSSCHs. ### Claim 12 (depends on 11) The method of claim 11, wherein a resource used by the first apparatus to transmit the PSFCH is a PSFCH resource related to a last received PSSCH among the plurality of PSSCHs received by the first apparatus. ### Claim 13 A first apparatus configured to perform wireless communication, the first apparatus comprising: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers, wherein based on the one or more processors executing the instructions, the one or more processors control the first apparatus to: receive, from a base station, first information related to a set of resource blocks (RBs) available for the first apparatus to transmit a physical sidelink feedback channel (PSFCH) and second information related to a number of cyclic shifts available for the first apparatus to transmit the PSFCH; receive, from a second apparatus, a physical sidelink shared channel (PSSCH); determine a PSFCH resource related the PSSCH, based on the first information related to the set of RBs and the second information related to the number of cyclic shifts; and transmit, to the second apparatus, Hybrid Automatic Repeat Request (HARQ) information based on the PSFCH resource. ### Claim 14 An apparatus configured to control a first user equipment (UE), the apparatus comprising: one or more processors; and one or more memories operatively connected to the one or more processors and storing instructions, wherein based on the one or more processors executing the instructions, the one or more processors control the first UE to: receive, from a base station, first information related to a set of resource blocks (RBs) available for the first UE to transmit a physical sidelink feedback channel (PSFCH) and second information related to a number of cyclic shifts available for the first UE to transmit the PSFCH; receive, from a second UE, a physical sidelink shared channel (PSSCH); determine a PSFCH resource related the PSSCH, based on the first information related to the set of RBs and the second information related to the number of cyclic shifts; and transmit, to the second UE, Hybrid Automatic Repeat Request (HARQ) information based on the PSFCH resource.