US 11,991,002 B2
Method and apparatus for adjusting threshold for determining HARQ feedback in NR V2X
Kyuhwan Kwak, Seoul (KR); Hanbyul Seo, Seoul (KR); Seungmin Lee, Seoul (KR); and Hyukjin Chae, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/283,776
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Sep. 3, 2019, PCT No. PCT/KR2019/011299
§ 371(c)(1), (2) Date Apr. 8, 2021,
PCT Pub. No. WO2020/091211, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/754,554, filed on Nov. 1, 2018.
Prior Publication US 2021/0391954 A1, Dec. 16, 2021
Int. Cl. H04L 1/1812 (2023.01); H04L 1/1867 (2023.01); H04W 92/18 (2009.01)
CPC H04L 1/1819 (2013.01) [H04L 1/1896 (2013.01); H04W 92/18 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method performed by a first device in a wireless communication system, the method comprising:
transmitting, to a second device, sidelink control information (SCI) on a physical sidelink control channel (PSCCH) for scheduling of a physical sidelink shared channel (PSSCH);
transmitting, to the second device, data on the PSSCH;
receiving, from the second device, information related to hybrid automatic repeat and request (HARQ) feedback in response to the transmission of the PSSCH;
decoding the HARQ feedback as an acknowledgement (ACK); and
determining the HARQ feedback as a negative acknowledgement (NACK) based on that a signal strength of the information related to the HARQ feedback is less than or equal to a first threshold,
wherein the first threshold is increased based on that a ratio that the first device determines NACK transmitted by the second device as ACK is higher than a second threshold, and
wherein the ratio is based on information related to a HARQ feedback transmission history of the second device, transmitted from the second device.