US 12,107,795 B2
Sounding reference signal based downlink transmission configuration indication
Yushu Zhang, Beijing (CN); Haitong Sun, Cupertino, CA (US); Dawei Zhang, Saratoga, CA (US); Haijing Hu, Los Gatos, CA (US); Wei Zeng, Saratoga, CA (US); Hong He, San Jose, CA (US); Chunhai Yao, Beijing (CN); Yuchul Kim, San Jose, CA (US); Yuqin Chen, Beijing (CN); Fangli Xu, Beijing (CN); and Yakun Sun, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/760,551
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Sep. 29, 2019, PCT No. PCT/CN2019/108879
§ 371(c)(1), (2) Date Mar. 15, 2022,
PCT Pub. No. WO2021/056509, PCT Pub. Date Apr. 1, 2021.
Prior Publication US 2022/0360398 A1, Nov. 10, 2022
Int. Cl. H04L 5/00 (2006.01)
CPC H04L 5/006 (2013.01) [H04L 5/0094 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for wireless communications between a device and a base station, the method comprising:
successively transmitting multiple sounding reference signals (SRSs) to a base station;
receiving in a transmission configuration indication (TCI) from the base station, at least in response to the base station receiving one or more of the multiple SRSs, an indication of a first SRS of the multiple SRSs, wherein transmitting the multiple SRSs comprises transmitting the first SRS using a first beam; and
receiving from the base station, using the first beam at least in response to receiving the indication of the first SRS, a downlink signal corresponding to the first SRS.