US 12,439,415 B2
Sidelink HARQ feedback and resource pool selection
Youngdae Lee, Seoul (KR); Giwon Park, Seoul (KR); and Jongyoul Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/760,383
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Apr. 8, 2021, PCT No. PCT/KR2021/004408
§ 371(c)(1), (2) Date Aug. 9, 2022,
PCT Pub. No. WO2021/206466, PCT Pub. Date Oct. 14, 2021.
Claims priority of application No. 10-2020-0043636 (KR), filed on Apr. 9, 2020.
Prior Publication US 2023/0083274 A1, Mar. 16, 2023
Int. Cl. H04W 72/23 (2023.01); H04L 1/1812 (2023.01); H04W 72/02 (2009.01); H04W 80/02 (2009.01)
CPC H04W 72/23 (2023.01) [H04L 1/1812 (2013.01); H04W 72/02 (2013.01); H04W 80/02 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method performed by a first wireless device, comprising:
wherein the first wireless device has been configured to transmit using pools of resources in a carrier based on sensing or random selection;
selecting to create a sidelink grant corresponding to transmission of multiple media access control (MAC) protocol data units (PDUs);
selecting any pool of resources configured with physical sidelink feedback channel (PSFCH) resources among the pools of resources, based on i) sidelink data being available in a logical channel, ii) a pool of resources allowed for the logical channel not being selected, and iii) a hybrid automatic repeat request (HARQ) feedback being enabled for the logical channel;
creating the sidelink grant based on the selected pool of resources;
performing transmission of the sidelink data to a second wireless device on resources indicated in the sidelink grant; and
receiving, from the second wireless device, the HARQ feedback for the transmission of the sidelink data based on the PSFCH resources.