US 12,471,064 B2
Feedback prioritization for sidelink communications
Xiaojie Wang, Hillsborough, NJ (US); Xiaoxia Zhang, San Diego, CA (US); and Sony Akkarakaran, Poway, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Feb. 17, 2022, as Appl. No. 17/674,647.
Prior Publication US 2023/0262659 A1, Aug. 17, 2023
Int. Cl. H04W 72/00 (2023.01); H04L 1/1812 (2023.01); H04L 5/00 (2006.01); H04W 72/02 (2009.01); H04W 72/0446 (2023.01); H04W 72/56 (2023.01)
CPC H04W 72/02 (2013.01) [H04L 1/1812 (2013.01); H04L 5/0044 (2013.01); H04W 72/0446 (2013.01); H04W 72/56 (2023.01)] 24 Claims
OG exemplary drawing
 
1. An apparatus for wireless communications, comprising:
at least one memory comprising instructions; and
at least one processor configured to execute the instructions and cause the apparatus to:
receive one or more sidelink communications including a plurality of data packets;
determine a respective priority level associated with each data packet of the plurality of data packets;
transmit at least one Physical Sidelink Feedback Channel (PSFCH) message using a PSFCH format, the PSFCH message including a plurality of Hybrid Automatic Repeat Request (HARQ) responses corresponding to at least a portion of the plurality of data packets selected based on the respective priority level associated with each data packet of the plurality of data packets, wherein the PSFCH format is selected from a plurality of PSFCH formats based on a maximum payload size of the PSFCH format and a payload size of the plurality of HARQ responses, each PSFCH format of the plurality of PSFCH formats associated with a respective maximum payload size; and
select the PSFCH format based on a corresponding payload size, a number of the plurality of HARQ responses, and a corresponding number of symbols of the PSFCH format.