US 12,425,897 B2
Beam sweep based random access msg 2
Qian Zhang, Basking Ridge, NJ (US); Yan Zhou, San Diego, CA (US); Tao Luo, San Diego, CA (US); Mostafa Khoshnevisan, San Diego, CA (US); and Junyi Li, Chester, NJ (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Nov. 9, 2020, as Appl. No. 17/092,679.
Claims priority of provisional application 62/952,014, filed on Dec. 20, 2019.
Prior Publication US 2021/0195651 A1, Jun. 24, 2021
Int. Cl. H04W 74/0833 (2024.01); H04B 7/06 (2006.01); H04W 24/10 (2009.01)
CPC H04W 74/0833 (2013.01) [H04B 7/0696 (2023.05); H04W 24/10 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A method of wireless communication at a user equipment (UE), comprising:
performing, prior to a first random access message (Msg 1), a first beam measurement of a first set of reference signals;
transmitting a beam report comprising beam measurement information based on the first beam measurement;
performing, prior to the first random access message (Msg 1), a second beam measurement of a second set of reference signals, wherein the second beam measurement is a random access measurement that is different than the first beam measurement;
transmitting, separately from the beam report, the first random access message (Msg 1) to a base station for reception using one or more beams based on the second beam measurement that is different than the first beam measurement on which the beam measurement information comprised in the beam report is based; and
monitoring multiple beams for a second random access message (Msg 2) from the base station, the multiple beams being selected based on the first beam measurement reported in the beam report transmitted prior to the first random access message (Msg 1), wherein a selection based on the beam report is based on the first beam measurement that is different than a basis for the one or more beams based on the random access measurement.