# US 12,015,477 B2 · Method and apparatus for transmitting sidelink data in communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,477 B2 - Document ID: US12015477B2 - Status: Granted - Kind: B2 - Application number: 18/076,527 - Filed: 2022-12-07 - Published: 2023-03-30 - Granted: 2024-06-18 - Earliest claimed: 2019-08-16 - Assignees: Hyundai Motor Company; Kia Corporation - Applicants: Hyundai Motor Company; Kia Corporation - Inventors: Gene Back Hahn; Hyuk Min Son - Web page: https://patentgrep.com/patent/US12015477B2 ## CPC - H04L 1/0004: {applied to control information} - H04W 72/25: between terminals via a wireless link, e.g. sidelink - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)} - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/56: based on priority criteria - H04W 76/23: Manipulation of direct-mode connections - H04W 80/02: Data link layer protocols - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - H04L 1/0025: {Transmission of mode-switching indication} - H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)} - H04W 92/18: between terminal devices - 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) ## Abstract An operation method of a first terminal in a communication system is provided. The method includes transmitting first SCI to a second terminal, the first SCI including one or more information elements among information indicating time resource(s) for sidelink communication, information indicating frequency resource(s) for the sidelink communication, information indicating a periodicity of physical resources for the sidelink communication, and information indicating an MCS for the sidelink communication. Second SCI is transmitted to the second terminal, the second SCI including information for an HARQ feedback operation and information indicating an NDI. The method further includes performing the sidelink communication with the second terminal based on the first SCI and the second SCI associated with the first SCI. ## Claims ### Claim 1 A method of a first user equipment (UE), comprising: transmitting, to a second UE, first sidelink control information (SCI) including resource allocation information through a physical sidelink control channel (PSCCH); and transmitting, to the second UE, second SCI including information used for determining whether a sidelink communication in a sidelink resource allocated by the first SCI is stopped or not, through a physical sidelink shared channel (PSSCH) scheduled by the first SCI, wherein, when it is determined that the sidelink communication is not stopped based on the second SCI, the sidelink communication is performed based on the second SCI associated with the first SCI in the sidelink resource allocated by the first SCI; and when it is determined that the sidelink communication is stopped based on the second SCI, the sidelink communication of the second UE is not performed in the sidelink resource allocated by the first SCI. ### Claim 2 (depends on 1) The method according to claim 1, wherein the first SCI further includes at least one of information indicating a periodicity of physical resources or a modulation and coding scheme (MCS) information. ### Claim 3 (depends on 1) The method according to claim 1, wherein one or more information elements included in the first SCI are configured based on one or more information elements indicated by a higher layer message. ### Claim 4 (depends on 1) The method according to claim 1, wherein physical resources indicated by the resource allocation information included in the first SCI are determined autonomously by the first UE without scheduling of a base station. ### Claim 5 (depends on 1) The method according to claim 1, further comprising: receiving, from a base station, downlink control information (DCI), wherein one or more information elements included in the first SCI are configured based on one or more information elements indicated by the DCI. ### Claim 6 (depends on 1) The method according to claim 1, wherein the first SCI is used to schedule a retransmission operation of sidelink data, and the sidelink data is repeatedly transmitted through physical resources indicated by the first SCI. ### Claim 7 (depends on 1) The method according to claim 1, wherein the second SCI further includes at least one of a hybrid automatic repeat request (HARQ) process number, a new data indicator (NDI), or a redundancy version (RV). ### Claim 8 A first user equipment (UE), comprising: a processor, wherein the processor causes the first UE to: transmit, to a second UE, first sidelink control information (SCI) including resource allocation information through a physical sidelink control channel (PSCCH); and transmit, to the second UE, second SCI including information used for determining whether a sidelink communication in a sidelink resource allocated by the first SCI is stopped or not, through a physical sidelink shared channel (PSSCH) scheduled by the first SCI, wherein, when it is determined that the sidelink communication is not stopped based on the second SCI, the sidelink communication is performed based on the second SCI associated with the first SCI in the sidelink resource allocated by the first SCI; and when it is determined that the sidelink communication is stopped based on the second SCI, the sidelink communication of the second UE is not performed in the sidelink resource allocated by the first SCI. ### Claim 9 (depends on 8) The first UE according to claim 8, wherein the first SCI further includes at least one of information indicating a periodicity of physical resources or a modulation and coding scheme (MCS) information. ### Claim 10 (depends on 8) The first UE according to claim 8, wherein one or more information elements included in the first SCI are configured based on one or more information elements indicated by a higher layer message. ### Claim 11 (depends on 8) The first UE according to claim 8, wherein physical resources indicated by the resource allocation information included in the first SCI are determined autonomously by the first UE without scheduling of a base station. ### Claim 12 (depends on 8) The first UE according to claim 8, wherein the processor further causes the first UE to: receive, from a base station, downlink control information (DCI), wherein one or more information elements included in the first SCI are configured based on one or more information elements indicated by the DCI. ### Claim 13 (depends on 8) The first UE according to claim 8, wherein the first SCI is used to schedule a retransmission operation of sidelink data, and the sidelink data is repeatedly transmitted through physical resources indicated by the first SCI. ### Claim 14 (depends on 8) The first UE according to claim 8, wherein the second SCI further includes at least one of a hybrid automatic repeat request (HARQ) process number, a new data indicator (NDI), or a redundancy version (RV).