US 12,149,463 B2
Sounding reference signal and hybrid automatic repeat request for new radio-unlicensed
Lopamudra Kundu, Santa Clara, CA (US); Bishwarup Mondal, San Ramon, CA (US); Gang Xiong, Portland, OR (US); Yongjun Kwak, Portland, OR (US); and Daewon Lee, Portland, OR (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/279,948
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Sep. 27, 2019, PCT No. PCT/US2019/053382
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/069269, PCT Pub. Date Apr. 2, 2020.
Claims priority of provisional application 62/739,031, filed on Sep. 28, 2018.
Prior Publication US 2022/0038233 A1, Feb. 3, 2022
Int. Cl. H04L 5/00 (2006.01); H04W 74/0808 (2024.01)
CPC H04L 5/0048 (2013.01) [H04W 74/0808 (2013.01)] 19 Claims
OG exemplary drawing
 
1. One or more non-transitory computer-readable media having instructions that, when executed by one or more processors, cause a user equipment (UE) to:
determine sounding reference signal (SRS) resource allocation information to configure uplink resources for an SRS, the uplink resources to include a plurality of bandwidth ranges within a sounding bandwidth;
perform a listen-before-talk (LBT) procedure in individual bandwidth ranges of the plurality of bandwidth ranges to detect at least one bandwidth range available for the SRS; and
generate the SRS for transmission within the at least one bandwidth range, wherein the SRS comprises a periodic SRS, a semi-persistent SRS, or an aperiodic SRS that spans one or more symbols located in a beginning portion of a subframe.