US 12,489,510 B2
Beam failure detection
Yushu Zhang, Beijing (CN); Wei Zeng, San Diego, CA (US); Dawei Zhang, Saratoga, CA (US); Haijing Hu, Beijing (CN); Haitong Sun, Irvine, CA (US); Weidong Yang, San Diego, CA (US); Yuchul Kim, Santa Clara, CA (US); Hong He, Cupertino, CA (US); Oghenekome Oteri, San Diego, CA (US); Chunxuan Ye, San Diego, CA (US); Chunhai Yao, Beijing (CN); Jie Cui, San Jose, CA (US); Yang Tang, Cupertino, CA (US); and Yakun Sun, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/437,889
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Oct. 22, 2020, PCT No. PCT/CN2020/122748
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2022/082580, PCT Pub. Date Apr. 28, 2022.
Prior Publication US 2022/0302985 A1, Sep. 22, 2022
Int. Cl. H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04W 24/10 (2009.01); H04W 76/19 (2018.01)
CPC H04B 7/06964 (2023.05) [H04L 5/0051 (2013.01); H04W 24/10 (2013.01); H04W 76/19 (2018.02)] 18 Claims
OG exemplary drawing
 
1. A processor, comprising:
memory storing instructions that, when executed, cause the processor to:
determine one or more beams to perform downlink communication from a base station;
receive, from the base station, a transmission configuration indicator (TCI) in an implicit indication, the TCI indicating:
a sounding reference signal (SRS), and
a first type of downlink reference signals based on the TCI;
determine that the first type of downlink reference signals are used in a same bandwidth part (BWP) as a control resource set (CORESET);
select the first type of downlink reference signals in order to perform beam failure detection and based at least in part on:
a lowest resource identifier (ID) of the first type of downlink reference signals;
the implicit indication;
a pathloss estimation for the SRS;
the determination that the first type of downlink reference signals are used in the same BWP as the CORESET; and
the SRS and the first type of downlink reference signals being indicated in the TCI;
perform signal quality measurements for the one or more beams using the first type of downlink reference signals; and
determine beam failure of at least one beam of the one or more beams based on said performing signal quality measurements.