US 12,408,224 B2
Radio link monitoring and failure for new radio-unlicensed operation
Seau S. Lim, Swindon (GB); Yongjun Kwak, Portland, OR (US); Anthony Lee, San Diego, CA (US); and Youn Hyoung Heo, Seoul (KR)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/275,404
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Sep. 16, 2019, PCT No. PCT/US2019/051321
§ 371(c)(1), (2) Date Mar. 11, 2021,
PCT Pub. No. WO2020/068472, PCT Pub. Date Apr. 2, 2020.
Claims priority of provisional application 62/737,480, filed on Sep. 27, 2018.
Prior Publication US 2022/0061116 A1, Feb. 24, 2022
Int. Cl. H04W 76/19 (2018.01); H04L 5/00 (2006.01); H04L 41/0654 (2022.01); H04W 24/08 (2009.01); H04W 56/00 (2009.01)
CPC H04W 76/19 (2018.02) [H04L 5/0048 (2013.01); H04L 5/0053 (2013.01); H04L 41/0654 (2013.01); H04W 24/08 (2013.01); H04L 5/001 (2013.01); H04W 56/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
monitoring a plurality of Radio Link Monitoring Reference Signals (RLM-RS) resources or samples from a base station on an unlicensed band during an in-sync evaluation period, wherein the in-sync evaluation period is based on a periodicity of a synchronization signal block (SSB) configured for radio link monitoring (RLM);
evaluating an in-sync condition within the in-sync evaluation period with an increased number of RLM-RS resources or samples within the in-sync evaluation period to compensate for missing RLM-RS resources or samples; and
determining whether to provide an in-sync indication via layer-1 signaling based on the evaluating.