US 12,132,571 B2
Method and apparatus for transmitting and receiving hybrid automatic repeat request (HARQ) response in sidelink communication
Gene Back Hahn, Gyeonggi-do (KR); and Hyuk Min Son, Jeollabuk-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Wonkwang University Center for Industry-Academy Cooperation, Jeollabuk-do (KR)
Appl. No. 17/416,824
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Wonkwang University Center For Industry-Academy Cooperation, Jeollabuk-do (KR)
PCT Filed Apr. 12, 2021, PCT No. PCT/KR2021/004595
§ 371(c)(1), (2) Date Jun. 21, 2021,
PCT Pub. No. WO2021/210870, PCT Pub. Date Oct. 21, 2021.
Claims priority of provisional application 63/008,868, filed on Apr. 13, 2020.
Prior Publication US 2023/0261797 A1, Aug. 17, 2023
Int. Cl. H04L 1/1607 (2023.01); H04L 1/1812 (2023.01)
CPC H04L 1/1678 (2013.01) [H04L 1/1819 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An operation method of a first terminal in a communication system, comprising:
receiving downlink control information (DCI) for scheduling sidelink transmission from a base station, the DCI including a counter sidelink assignment index (cSAI);
transmitting sidelink control information (SCI) including a redundancy version (RV) to a second terminal;
transmitting first sidelink data to athe second terminal based on the DCI and the SCI;
receiving a first sidelink (SL) hybrid automatic repeat request (HARQ) response for the first sidelink data from the second terminal through a physical sidelink feedback channel (PSFCH); and
transmitting a HARQ-ACK codebook including the first SL HARQ response to the base station through a physical uplink control channel (PUCCH) at a feedback timing indicated by first information included in the DCI;
wherein the cSAI is used for identifying the first sidelink data associated with the first SL HARQ response in the HARQ-ACK codebook;
wherein, in response that the first sidelink data is retransmission data due to the first sidelink data not being received in the second terminal, the RV included in the SCI is different from an RV associated with the first sidelink data not being received in the second terminal; and
wherein, in response that the first sidelink data is retransmission data due to the first sidelink data not being transmitted by the first terminal, the RV included in the SCI is identical to an RV associated with the first sidelink data not being transmitted to the first terminal.