US 12,279,297 B2
Method and device for transmitting HARQ feedback on basis of priority in NR V2X
Seungmin Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/766,690
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Oct. 6, 2020, PCT No. PCT/KR2020/013540
§ 371(c)(1), (2) Date Apr. 5, 2022,
PCT Pub. No. WO2021/071193, PCT Pub. Date Apr. 15, 2021.
Claims priority of provisional application 62/911,362, filed on Oct. 6, 2019.
Prior Publication US 2024/0080877 A1, Mar. 7, 2024
Int. Cl. H04W 72/566 (2023.01); H04L 1/1812 (2023.01); H04W 72/12 (2023.01); H04W 72/25 (2023.01); H04W 72/40 (2023.01)
CPC H04W 72/566 (2023.01) [H04L 1/1812 (2013.01); H04W 72/12 (2013.01); H04W 72/25 (2023.01); H04W 72/40 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method performed by a first device, the method comprising:
selecting a synchronization reference based on a sidelink (SL) synchronization priority,
wherein the SL synchronization priority is set to a global navigation satellite system (GNSS)-based synchronization or a base station (BS)-based synchronization,
wherein the synchronization reference includes at least one of a GNSS, a base station, or a user equipment (UE),
wherein, based on the SL synchronization priority being set to the GNSS-based synchronization, a priority of a synchronization reference related to the GNSS is higher than a priority of a synchronization reference related to the base station, and
wherein, based on the SL synchronization priority being set to the BS-based synchronization, the priority of the synchronization reference related to the base station is higher than the priority of the synchronization reference related to the GNSS;
obtaining synchronization based on the synchronization reference;
transmitting, to a second device, a first physical sidelink control channel (PSCCH) and a first physical sidelink shared channel (PSSCH) related to the first PSCCH;
transmitting, to the second device, a second PSCCH and a second PSSCH related to the second PSCCH;
receiving, from the second device, first SL hybrid automatic repeat request (HARQ) feedback information through a first physical sidelink feedback channel (PSFCH) related to the first PSSCH;
receiving, from the second device, second SL HARQ feedback information through a second PSFCH related to the second PSSCH; and
determining, based on a priority value of the first SL HARQ feedback information and a priority value of the second SL HARQ feedback information, a priority value of physical uplink control channel (PUCCH) transmission for reporting the first SL HARQ feedback information and the second SL HARQ feedback information to a base station.