US 11,871,259 B2
Sounding reference signal (SRS) guided downlink channel state information-reference signal (CSI-RS) scan
Bo Chen, Beijing (CN); Pavan Kumar Vitthaladevuni, San Diego, CA (US); Yu Zhang, Beijing (CN); Ruifeng Ma, Beijing (CN); Joseph Binamira Soriaga, San Diego, CA (US); Yeliz Tokgoz, San Diego, CA (US); Tingfang Ji, San Diego, CA (US); and Alexandros Manolakos, Escondido, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/275,128
Filed by QUALCOMM Incorporated, San Diego, CA (US)
PCT Filed Sep. 26, 2019, PCT No. PCT/CN2019/108090
§ 371(c)(1), (2) Date Mar. 10, 2021,
PCT Pub. No. WO2020/063729, PCT Pub. Date Apr. 2, 2020.
Application 17/275,128 is a continuation of application No. PCT/CN2018/108110, filed on Sep. 27, 2018.
Claims priority of application No. PCT/CN2018/108110 (WO), filed on Sep. 27, 2018.
Prior Publication US 2022/0078649 A1, Mar. 10, 2022
Int. Cl. H04W 24/10 (2009.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01)
CPC H04W 24/10 (2013.01) [H04L 5/0057 (2013.01); H04L 25/0224 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method for wireless communication, comprising:
receiving sounding reference signals (SRSs) from a user-equipment (UE);
selecting multiple sets of beams based on the SRSs received from the UE;
transmitting first channel state information-reference signals (CSI-RSs) to the UE via the multiple sets of beams;
receiving first channel measurement feedback information from the UE indicating a set of beams of the multiple sets of beams received at the UE with a best quality;
transmitting a second CSI-RS based on the first channel measurement feedback information from the UE;
receiving second channel measurement feedback information from the UE based on the second CSI-RS; and
communicating data with the UE based on the second channel measurement feedback information.