US 12,244,388 B2
Beam selection for random access messaging
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 Oct. 15, 2021, as Appl. No. 17/502,956.
Claims priority of provisional application 63/092,822, filed on Oct. 16, 2020.
Prior Publication US 2022/0123819 A1, Apr. 21, 2022
Int. Cl. H04B 7/06 (2006.01); H04W 74/0833 (2024.01)
CPC H04B 7/0695 (2013.01) [H04W 74/0833 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A user equipment, comprising:
one or more memories storing processor-executable code; and
one or more processors configured to execute the processor-executable code and cause the user equipment to:
transmit a plurality of repetitions of a first random access message to a base station, the plurality of repetitions of the first random access message being transmitted via a first plurality of beams, the transmission of the plurality of repetitions comprising a first transmission of a first repetition of the plurality of repetitions of the first random access message via a second beam of the first plurality of beams on a first set of symbols of a first random access channel (RACH) occasion of a plurality of RACH occasions, and the transmission of the plurality of repetitions further comprising a second transmission of a second repetition of the plurality of repetitions of the first random access message via a third beam of the first plurality of beams on a second set of symbols of the first RACH occasion, wherein the third beam has a different direction than the second beam;
receive a second random access message comprising a first indication of a second plurality of beams to use for a transmission of a third random access message to the base station, the second plurality of beams being a subset of the first plurality of beams used for the transmission of the plurality of repetitions of the first random access message; and
transmit the third random access message to the base station, the transmission of the third random access message being via a first beam selected by the user equipment from the second plurality of beams.