US 11,792,858 B2
Random access procedure fallback
Xiaoxia Zhang, San Diego, CA (US); Jing Sun, San Diego, CA (US); Sony Akkarakaran, Poway, CA (US); Muhammad Nazmul Islam, Littleton, MA (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 Jul. 2, 2021, as Appl. No. 17/366,595.
Application 17/366,595 is a continuation of application No. 16/746,704, filed on Jan. 17, 2020, granted, now 11,064,537.
Claims priority of provisional application 62/800,329, filed on Feb. 1, 2019.
Prior Publication US 2021/0378019 A1, Dec. 2, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2009.01); H04W 76/10 (2018.01)
CPC H04W 74/0833 (2013.01) [H04W 76/10 (2018.02)] 30 Claims
OG exemplary drawing
 
1. A method for wireless communication at a user equipment (UE), comprising:
transmitting, as part of a two-step random access procedure, a first random access message including a random access preamble and a connection request, wherein a value of a redundancy version of the connection request is statically configured and is for both an initial transmission of the connection request associated with the two-step random access procedure and a retransmission of the connection request associated with a fallback to a four-step random access procedure; and
monitoring a response window of a channel to receive a second random access message in response to the first random access message, the response window associated with a configured timer, wherein the second random access message indicates one of: a success of the two-step random access procedure or the fallback to the four-step random access procedure.