US 12,150,168 B2
Method and apparatus of control signaling in unlicensed spectrum
Hongbo Si, Plano, TX (US)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Apr. 26, 2022, as Appl. No. 17/660,820.
Claims priority of provisional application 63/210,590, filed on Jun. 15, 2021.
Claims priority of provisional application 63/185,856, filed on May 7, 2021.
Prior Publication US 2022/0386365 A1, Dec. 1, 2022
Int. Cl. H04W 74/00 (2009.01); H04L 5/00 (2006.01); H04W 16/14 (2009.01); H04W 72/23 (2023.01); H04W 74/0808 (2024.01); H04W 74/0833 (2024.01)
CPC H04W 74/006 (2013.01) [H04L 5/0048 (2013.01); H04L 5/0053 (2013.01); H04W 16/14 (2013.01); H04W 72/23 (2023.01); H04W 74/0808 (2013.01); H04W 74/0833 (2013.01)] 20 Claims
OG exemplary drawing
 
8. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver configured to receive, from a base station (BS), a downlink control information (DCI) format; and
a processor operably coupled to the transceiver, the processor configured to:
determine a type of channel access procedure based on a field in the DCI format, wherein the type of channel access procedure is one of:
a first type of channel access procedure that includes a random time duration for sensing;
a second type of channel access procedure that includes a positive and deterministic time duration for sensing; or
a third type of channel access procedure that does not include a time duration for sensing; and
perform a channel access procedure based on the determined type of channel access procedure,
wherein the transceiver further configured to transmit an uplink transmission on a channel with shared spectrum channel access after performing the channel access procedure.