US Patent No. 10,368,373

BEAM SELECTION AND REFINEMENT DURING A RANDOM ACCESS CHANNEL (RACH) PROCEDURE


Patent No. 10,368,373
Issue Date July 30, 2019
Title Beam Selection And Refinement During A Random Access Channel (rach) Procedure
Inventorship Sumeeth Nagaraja, San Diego, CA (US)
Tao Luo, San Diego, CA (US)
Assignee QUALCOMM Incorporated, San Diego, CA (US)

Claim of US Patent No. 10,368,373

1. A method for wireless communication by a node B (NB), comprising:transmitting, by the NB, a first one or more directional beams to enable a user equipment (UE) to select a first beam;
receiving, by the NB, a message via the first beam from the UE as part of a random access channel (RACH) procedure; and
transmitting, by the NB, a second one or more directional beams for beam refinement during the RACH procedure, wherein the second one or more directional beams enable the UE to switch to a second beam, wherein the second beam is a narrower beam within the first beam.