US 12,192,005 B2
Method and apparatus for transmitting and receiving HARQ response in communication system
Gene Back Hahn, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Appl. No. 17/772,432
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
PCT Filed Oct. 23, 2020, PCT No. PCT/KR2020/014549
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2021/085944, PCT Pub. Date May 6, 2021.
Claims priority of provisional application 62/928,767, filed on Oct. 31, 2019.
Claims priority of application No. 10-2020-0137774 (KR), filed on Oct. 22, 2020.
Prior Publication US 2022/0376834 A1, Nov. 24, 2022
Int. Cl. H04L 1/1812 (2023.01); H04L 1/1829 (2023.01); H04L 1/1867 (2023.01); H04W 92/18 (2009.01)
CPC H04L 1/1812 (2013.01) [H04L 1/1861 (2013.01); H04L 1/1893 (2013.01); H04W 92/18 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of a first user equipment (UE), comprising:
configuring a first hybrid automatic repeat request (HARQ) identifier mapped to a first HARQ feedback resource;
transmitting a message including the first HARQ identifier to a second UE;
transmitting sidelink data to a plurality of UEs belonging to a groupcast group in a groupcast scheme;
receiving a HARQ response for the sidelink data from the second UE in the first HARQ feedback resource mapped to the first HARQ identifier;
reconfiguring HARQ identifiers allocated to remaining UEs excluding the second UE among the plurality of UEs when the second UE leaves the groupcast group; and
transmitting the reconfigured HARQ identifiers to the remaining UEs,
wherein the second UE belongs to the groupcast group.