US 12,328,749 B2
Beam switching techniques for uplink transmission
Mostafa Khoshnevisan, San Diego, CA (US); Fang Yuan, Beijing (CN); Xiaoxia Zhang, San Diego, CA (US); Wooseok Nam, San Diego, CA (US); Tao Luo, San Diego, CA (US); and Jing Sun, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Appl. No. 17/758,450
Filed by QUALCOMM INCORPORATED, San Diego, CA (US)
PCT Filed Feb. 25, 2020, PCT No. PCT/CN2020/076558
§ 371(c)(1), (2) Date Jul. 6, 2022,
PCT Pub. No. WO2021/168645, PCT Pub. Date Sep. 2, 2021.
Prior Publication US 2023/0033910 A1, Feb. 2, 2023
Int. Cl. H04W 72/54 (2023.01); H04L 5/00 (2006.01); H04W 72/1263 (2023.01); H04W 72/23 (2023.01); H04W 80/02 (2009.01)
CPC H04W 72/54 (2023.01) [H04L 5/0051 (2013.01); H04W 72/1263 (2013.01); H04W 72/23 (2023.01); H04W 80/02 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method for wireless communications at a user equipment (UE), comprising:
receiving sounding reference signal resource set configuration information that indicates an aperiodic sounding reference signal resource set, an aperiodic downlink reference signal resource associated with the aperiodic sounding reference signal resource set, and a slot offset associated with the aperiodic downlink reference signal resource;
receiving downlink control information in a first slot, the downlink control information indicating that the aperiodic sounding reference signal resource set is triggered;
determining a quasi co-location assumption for the aperiodic downlink reference signal resource based at least in part on the slot offset associated with the aperiodic downlink reference signal resource;
measuring the aperiodic downlink reference signal resource in a second slot indicated by the slot offset based at least in part on the quasi co-location assumption; and
transmitting an aperiodic sounding reference signal on the aperiodic sounding reference signal resource set based at least in part on an uplink precoder that is determined for the aperiodic sounding reference signal resource set based at least in part on the measuring the aperiodic downlink reference signal resource in the second slot.