US 11,991,671 B2
Feedback designs for multi-user multiple input-multiple output sidelink communication
Wei Yang, San Diego, CA (US); Ahmed Elshafie, San Diego, CA (US); Seyedkianoush Hosseini, San Diego, CA (US); and Tugcan Aktas, La Jolla, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 31, 2021, as Appl. No. 17/463,481.
Prior Publication US 2023/0062247 A1, Mar. 2, 2023
Int. Cl. H04W 72/02 (2009.01); H04B 7/0452 (2017.01); H04L 1/00 (2006.01); H04L 1/1867 (2023.01); H04W 72/20 (2023.01)
CPC H04W 72/02 (2013.01) [H04L 1/0025 (2013.01); H04L 1/1896 (2013.01); H04W 72/20 (2023.01); H04B 7/0452 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method for wireless communication at a first device, comprising:
transmitting, to a second device, an indication of a multi-user unicast mode for a first sidelink transmission, wherein operation in the multi-user unicast mode comprises transmitting sidelink multi-user multiple-input multiple-output (MU-MIMO) transmissions;
transmitting, to the second device, signaling associated with the first sidelink transmission; and
receiving, from the second device and via a first sidelink feedback channel resource, feedback associated with the first sidelink transmission based at least in part on the multi-user unicast mode, wherein the first sidelink feedback channel resource is identified based at least in part on a function of a source identifier associated with the first device and an orthogonal cover code index for a sidelink control channel associated with the first sidelink transmission.