US 12,022,519 B2
Physical random access channel repetition and receive-beam sweep and associated beam refinement
Mahmoud Taherzadeh Boroujeni, San Diego, CA (US); Tao Luo, San Diego, CA (US); Juan Montojo, San Diego, CA (US); Peter Gaal, San Diego, CA (US); Yan Zhou, San Diego, CA (US); Iyab Issam Sakhnini, San Diego, CA (US); Jelena Damnjanovic, Del Mar, CA (US); and Wooseok Nam, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Feb. 18, 2021, as Appl. No. 17/179,139.
Claims priority of provisional application 62/980,095, filed on Feb. 21, 2020.
Prior Publication US 2021/0266974 A1, Aug. 26, 2021
Int. Cl. H04W 74/0833 (2024.01); H04B 17/318 (2015.01); H04W 16/28 (2009.01); H04W 24/08 (2009.01); H04W 24/10 (2009.01); H04W 56/00 (2009.01); H04W 74/00 (2009.01)
CPC H04W 74/0833 (2013.01) [H04B 17/318 (2015.01); H04W 16/28 (2013.01); H04W 24/08 (2013.01); H04W 24/10 (2013.01); H04W 56/001 (2013.01); H04W 74/008 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for wireless communications by a network entity, comprising:
determining resources to monitor for a physical random access channel (PRACH) transmission sent from a user equipment (UE) as part of a random access channel (RACH) procedure;
performing receive beam sweeping when receiving PRACH repetitions sent using the determined resources;
using results of the receive beam sweeping to refine one or more beams and to select a refined beam of the refined one or more beams; and
using the selected refined beam for at least one of receiving a subsequent message from the UE as part of the RACH procedure or sending a subsequent message to the UE as part of the RACH procedure.