US 11,737,149 B2
Random access procedure based on contention resolution
Hyoungsuk Jeon, Centreville, VA (US); Esmael Hejazi Dinan, McLean, VA (US); Hua Zhou, Vienna, VA (US); Kai Xu, Herndon, VA (US); Alireza Babaei, Fairfax, VA (US); Kyungmin Park, Vienna, VA (US); and Ali Cagatay Cirik, Chantilly, VA (US)
Assigned to Ofinno, LLC, Reston, VA (US)
Filed by Ofinno, LLC, Reston, VA (US)
Filed on Feb. 4, 2022, as Appl. No. 17/665,187.
Application 17/665,187 is a continuation of application No. 16/584,073, filed on Sep. 26, 2019, granted, now 11,259,331.
Claims priority of provisional application 62/737,849, filed on Sep. 27, 2018.
Prior Publication US 2022/0159737 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/08 (2009.01); H04W 56/00 (2009.01); H04W 74/00 (2009.01); H04W 72/23 (2023.01)
CPC H04W 74/0833 (2013.01) [H04W 56/005 (2013.01); H04W 72/23 (2023.01); H04W 74/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a wireless device, a random access response in response to transmitting a first random access preamble, the random access response comprising an uplink grant;
transmitting, via the uplink grant, a Msg3 message comprising a wireless device identifier of the wireless device;
starting a contention resolution time window based on transmitting the Msg3 message;
determining a contention resolution is unsuccessful in response to not receiving a response, comprising the wireless device identifier and corresponding to the Msg3 message, during the contention resolution time window; and
based on the determining, performing a two-step random access procedure comprising transmitting a message comprising:
a second random access preamble via a random access channel resource; and
a transport block via an uplink resource corresponding to the random access channel resource.