US 11,870,571 B2
Method and apparatus for determining feedback resource in NR V2X
Daesung Hwang, Seoul (KR); 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. 17, 2022, as Appl. No. 17/967,055.
Application 17/967,055 is a continuation of application No. 17/543,263, filed on Dec. 6, 2021, granted, now 11,476,976.
Application 17/543,263 is a continuation of application No. PCT/KR2020/008058, filed on Jun. 22, 2020.
Claims priority of provisional application 62/938,947, filed on Nov. 21, 2019.
Claims priority of application No. 10-2019-0083338 (KR), filed on Jul. 10, 2019; and application No. 10-2019-0175223 (KR), filed on Dec. 26, 2019.
Prior Publication US 2023/0052408 A1, Feb. 16, 2023
Int. Cl. H04L 12/28 (2006.01); H04L 1/00 (2006.01); H04L 1/1812 (2023.01); H04W 72/02 (2009.01); H04W 72/0453 (2023.01); H04J 1/16 (2006.01); H04W 4/40 (2018.01)
CPC H04L 1/0055 (2013.01) [H04L 1/1812 (2013.01); H04W 72/02 (2013.01); H04W 72/0453 (2013.01); H04W 4/40 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method for performing wireless communication by a first device, the method comprising:
obtaining a set of physical resource blocks (PRBs) in a resource pool for physical sidelink feedback channel (PSFCH) transmission;
allocating, for a number of sub-channels for the resource pool and a number of physical sidelink shared channel (PSSCH) slots related to a PSFCH slot, M PRBs including m-th to n-th PRBs from the set of PRBs to an i-th slot among the PSSCH slots related to the PSFCH slot and a j-th sub-Channel,
wherein m and n are obtained based on:
m=(i+j·N)·M
n=(i+1+j·N·M−1
wherein N is a PSFCH period, M is a positive integer, i is an integer greater than or equal to zero and less than N, and j is an integer greater than or equal to zero and less than the number of sub-channels for the resource pool;
receiving, based on a slot and at least one sub-channel, a PSSCH from a second device;
determining, based on the allocation related to the PSSCH, a number of PSFCH resources available for multiplexing hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information in the PSFCH transmission; and
determining, among the PSFCH resources, an index of a PSFCH resource for the PSFCH transmission in response to the reception of the PSSCH, based on a source identifier (ID) of the second device.