US 11,770,855 B2
Random access channel (RACH) procedure design
Hung Ly, San Diego, CA (US); Hao Xu, Beijing (CN); and Tingfang Ji, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Oct. 16, 2017, as Appl. No. 15/785,173.
Claims priority of provisional application 62/410,333, filed on Oct. 19, 2016.
Prior Publication US 2018/0110075 A1, Apr. 19, 2018
Int. Cl. H04W 74/08 (2009.01)
CPC H04W 74/0833 (2013.01) 21 Claims
OG exemplary drawing
 
1. A method for wireless communication by a user equipment (UE), comprising:
receiving an indication of a random-access channel (RACH) procedure capability of a network entity;
selecting a first RACH procedure or a second RACH procedure, based on the indication, wherein the first RACH procedure and the second RACH procedure comprise contention-based RACH procedures;
selecting a sequence for a RACH preamble to indicate, to the network entity, whether the first RACH procedure or the second RACH procedure is selected;
generating the RACH preamble based on the selection of the sequence; and
communicating one or more messages with the network entity based on the selected first RACH procedure or the selected second RACH procedure, wherein communicating the one or more messages comprises transmitting the RACH preamble.