US 12,407,454 B2
Unlicensed band by UE in wireless communication system and apparatus therefor
Daesung Hwang, Seoul (KR); and Seungmin Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Mar. 10, 2023, as Appl. No. 18/119,985.
Claims priority of application No. 10-2022-0039894 (KR), filed on Mar. 30, 2022.
Prior Publication US 2023/0344565 A1, Oct. 26, 2023
Int. Cl. H04L 1/1867 (2023.01); H04L 1/1812 (2023.01); H04W 72/25 (2023.01); H04W 72/40 (2023.01); H04W 74/0808 (2024.01); H04W 74/0833 (2024.01); H04W 92/18 (2009.01)
CPC H04L 1/187 (2013.01) [H04L 1/1887 (2013.01); H04L 1/1896 (2013.01); H04W 72/40 (2023.01)] 14 Claims
OG exemplary drawing
 
1. A method of transmitting, by a first user equipment (UE), sidelink signals in an unlicensed band in a wireless communication system supporting sidelink communication, the method comprising:
randomly selecting a value of a back-off counter within a contention window related to the unlicensed band; and
transmitting a first sidelink signal including a transport block (TB) in the unlicensed band based on the backoff counter,
wherein the first sidelink signal is transmitted over a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH), and
wherein based on that reception of hybrid automatic repeat request (HARQ) feedback for the first sidelink signal is not expected, a size of the contention window is maintained regardless of whether the TB is retransmitted.