US 12,324,018 B2
Sounding reference signal (SRS) triggered in a random access channel (RACH) procedure
Mahmoud Taherzadeh Boroujeni, San Diego, CA (US); and Tao Luo, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 22, 2021, as Appl. No. 17/448,438.
Claims priority of provisional application 63/092,891, filed on Oct. 16, 2020.
Prior Publication US 2022/0124821 A1, Apr. 21, 2022
Int. Cl. H04W 74/0833 (2024.01); H04L 5/00 (2006.01); H04W 24/08 (2009.01); H04W 72/1268 (2023.01)
CPC H04W 74/0833 (2013.01) [H04L 5/0007 (2013.01); H04L 5/0048 (2013.01); H04W 24/08 (2013.01); H04W 72/1268 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for wireless communications performed by a user equipment (UE), comprising:
receiving a downlink (DL) random access channel (RACH) message that indicates the UE is to transmit a sounding reference signal (SRS), wherein the DL RACH message comprises a flag in the DL RACH message that activates transmission of the SRS by the UE, and wherein parameters for transmitting the SRS are determined implicitly based on the DL RACH message;
transmitting the SRS in accordance with the DL RACH message; and
transmitting an uplink (UL) RACH message after transmitting the SRS.