US 12,034,538 B2
Method and apparatus for performing retransmission in wireless communication system
Youngdae Lee, Seoul (KR); Giwon Park, Seoul (KR); Hanbyul Seo, Seoul (KR); and Jongyoul Lee, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Jul. 14, 2023, as Appl. No. 18/222,194.
Application 18/222,194 is a continuation of application No. 17/708,806, filed on Mar. 30, 2022, granted, now 11,742,988.
Application 17/708,806 is a continuation of application No. PCT/KR2020/013092, filed on Sep. 25, 2020.
Claims priority of application No. 10-2019-0122719 (KR), filed on Oct. 3, 2019.
Prior Publication US 2023/0361918 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 1/08 (2006.01); H04W 28/26 (2009.01); H04W 72/02 (2009.01); H04W 72/23 (2023.01); H04W 72/543 (2023.01); H04W 72/56 (2023.01)
CPC H04L 1/08 (2013.01) [H04W 28/26 (2013.01); H04W 72/02 (2013.01); H04W 72/23 (2023.01); H04W 72/543 (2023.01); H04W 72/56 (2023.01)] 12 Claims
OG exemplary drawing
 
1. A method performed by a first user equipment (UE) in a wireless communication system, the method comprising:
creating a sidelink grant for transmissions of a media access control (MAC) protocol data unit (PDU), wherein the sidelink grant is related to a first resource for an initial transmission and one or more second resources for a retransmission;
performing the initial transmission based on the first resource;
monitoring a physical sidelink feedback channel (PSFCH) for the initial transmission;
determining a negative acknowledgement for hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information provided in the PSFCH; and
performing the retransmission,
wherein the method further comprises:
comparing a value of measurement performed for sidelink resources with a threshold related to a priority of the MAC PDU; and
based on a result of the comparison between the value of measurement performed for the sidelink resources and the threshold related to the priority of the MAC PDU: removing the one or more second resources; and ii) selecting one or more third resources, and
wherein the retransmission is performed based on the one or more third resources.