US 12,081,341 B2
Method and apparatus for performing DTX-based RLF operation in NR V2X
Seungmin Lee, Seoul (KR); and Hanbyul Seo, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Oct. 18, 2022, as Appl. No. 18/047,400.
Application 18/047,400 is a continuation of application No. PCT/KR2021/005999, filed on May 13, 2021.
Claims priority of provisional application 63/024,501, filed on May 13, 2020.
Claims priority of provisional application 63/025,145, filed on May 14, 2020.
Prior Publication US 2023/0080600 A1, Mar. 16, 2023
Int. Cl. H04L 1/1812 (2023.01); H04W 72/20 (2023.01); H04W 76/28 (2018.01)
CPC H04L 1/1812 (2013.01) [H04W 72/20 (2023.01); H04W 76/28 (2018.02)] 9 Claims
OG exemplary drawing
 
1. A method for performing, by a first device, wireless communication, the method comprising:
transmitting, to a second device, a physical sidelink control channel (PSCCH) including a cast type indicator set to unicast;
transmitting, to the second device, a physical sidelink shared channel (PSSCH) based on the PSCCH;
determining a physical sidelink feedback channel (PSFCH) resource related to the PSSCH;
monitoring a hybrid automatic repeat request (HARQ) feedback during the PSFCH resource; and
declaring a sidelink (SL) radio link failure (RLF) for a connection between the first device and the second device, based on a discontinuous transmission (DTX) counter reaching a maximum threshold related to DTX,
wherein a physical layer of the first device does not transfer the HARQ feedback to a medium access control (MAC) layer of the first device, based on the HARQ feedback related to the PSSCH not being detected during the monitoring,
wherein the DTX counter is incremented by 1 by the MAC layer of the first device, based on the HARQ feedback not being detected during the monitoring, and
wherein the DTX counter is initialized based on a PSFCH reception being not absent on the PSFCH resource.