US 12,075,469 B2
Scheduling request enhancements for 5G networks
Anthony Lee, San Diego, CA (US); Seau S. Lim, Swindon (GB); and Youn Hyoung Heo, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/284,707
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Oct. 29, 2019, PCT No. PCT/US2019/058551
§ 371(c)(1), (2) Date Apr. 12, 2021,
PCT Pub. No. WO2020/092359, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/753,830, filed on Oct. 31, 2018.
Prior Publication US 2021/0352717 A1, Nov. 11, 2021
Int. Cl. H04W 74/0808 (2024.01); H04W 16/14 (2009.01); H04W 72/12 (2023.01); H04W 72/21 (2023.01); H04W 76/19 (2018.01)
CPC H04W 74/0808 (2013.01) [H04W 16/14 (2013.01); H04W 72/1221 (2013.01); H04W 72/21 (2023.01); H04W 76/19 (2018.02)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor, wherein to configure a user equipment (UE) for communication of data in a New Radio-Unlicensed (NR-U) spectrum, the at least one processor is configured to cause the UE to:
instruct a physical layer to signal a scheduling request (SR) for transmission to a base station;
based on the SR transmission being unsuccessful due to a listen-before-talk (LBT) failure, increment an LBT failure counter without incrementing a SR counter and starting an SR prohibit timer; and
based on the LBT failure counter reaching a configured maximum value, report the LBT failure counter reaching the configured maximum value to the base station using medium access control (MAC) signaling.