US 12,256,431 B2
Retransmissions over a sidelink unlicensed band
Qing Li, Princeton Junction, NJ (US); Junyi Li, Fairless Hills, PA (US); Shuanshuan Wu, San Diego, CA (US); and Hong Cheng, Basking Ridge, NJ (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jan. 4, 2022, as Appl. No. 17/646,990.
Prior Publication US 2023/0232454 A1, Jul. 20, 2023
Int. Cl. H04W 74/0816 (2024.01); H04L 1/08 (2006.01); H04L 1/1812 (2023.01); H04L 1/1867 (2023.01); H04L 5/00 (2006.01); H04W 72/02 (2009.01); H04W 72/0446 (2023.01); H04W 72/20 (2023.01); H04W 74/00 (2009.01); H04W 74/08 (2024.01)
CPC H04W 74/0816 (2013.01) [H04L 1/08 (2013.01); H04L 1/1812 (2013.01); H04L 1/1867 (2013.01); H04L 1/1883 (2013.01); H04L 5/0053 (2013.01); H04W 72/02 (2013.01); H04W 72/0446 (2013.01); H04W 72/20 (2023.01); H04W 74/002 (2013.01); H04W 74/0866 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus for wireless communication at a first user equipment (UE), comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, the one or more processors configured to:
transmit, to a second UE, an initial transmission of a transport block via a sidelink unlicensed band;
receive, from the second UE, a negative acknowledgement (NACK) based at least in part on the initial transmission of the transport block; and
transmit, to the second UE and based at least in part on the NACK and a retransmission reservation associated with a plurality of retransmission occasions, a retransmission of the transport block via the sidelink unlicensed band in a retransmission occasion of the plurality of retransmission occasions associated with the retransmission reservation.