US 12,349,139 B2
Methods for protecting sidelink feedback information
Anantharaman Balasubramanian, San Diego, CA (US); Shuanshuan Wu, San Diego, CA (US); Kapil Gulati, Belle Mead, NJ (US); Hong Cheng, Basking Ridge, NJ (US); and Junyi Li, Fairless Hills, PA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Apr. 14, 2022, as Appl. No. 17/659,303.
Prior Publication US 2023/0337235 A1, Oct. 19, 2023
Int. Cl. H04W 60/04 (2009.01); H04L 1/1607 (2023.01); H04W 4/06 (2009.01); H04W 72/20 (2023.01)
CPC H04W 72/20 (2023.01) [H04L 1/1621 (2013.01); H04W 4/06 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for wireless communication at a first user equipment (UE) comprising:
receiving, from a second UE, sidelink control information (SCI) scheduling a physical sidelink shared channel (PSSCH);
determining a sequence for providing feedback for the PSSCH, from a plurality of possible sequences, based on one or more parameters that comprise a key index transmitted in the SCI, wherein the one or more parameters further comprise a source identifier (source ID) of the second UE and a subchannel used for transmitting the PSSCH, and wherein determining the sequence for providing feedback comprises:
determining a base sequence of length n as a function of at least one of the source ID or the key index; and
cyclically shifting the base sequence as a function of at least one of the source ID or the key index; and
transmitting the sequence via a physical sidelink feedback channel (PSFCH) as feedback for the PSSCH.