US 11,751,086 B2
Uplink clear channel assessment status as a new uplink control information for new radio-unlicensed
Yisheng Xue, San Diego, CA (US); Xiaoxia Zhang, San Diego, CA (US); Aleksandar Damnjanovic, Del Mar, CA (US); Jing Sun, San Diego, CA (US); and Yongbin Wei, La Jolla, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Feb. 2, 2022, as Appl. No. 17/649,765.
Application 17/649,765 is a division of application No. 16/576,447, filed on Sep. 19, 2019, granted, now 11,265,748.
Claims priority of provisional application 62/749,989, filed on Oct. 24, 2018.
Prior Publication US 2022/0159499 A1, May 19, 2022
Int. Cl. H04W 24/10 (2009.01); H04L 5/00 (2006.01); H04W 72/21 (2023.01)
CPC H04W 24/10 (2013.01) [H04L 5/0048 (2013.01); H04W 72/21 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A method of wireless communication, comprising:
identifying, by a user equipment (UE), an initial signal from a serving base station over a contention-based shared communication spectrum, wherein the initial signal identifies establishment of a current base station transmission opportunity (TxOP);
performing, by the UE, a clear channel assessment (CCA) procedure on the contention-based shared communication spectrum available for communications by the UE;
generating, by the UE, a reduced format sounding reference signal (SRS) that identifies at least a successful result of the CCA procedure; and
transmitting, by the UE, the reduced format SRS identifying the successful result of the CCA procedure.