US 12,082,247 B2
Resource selection using a listen before talk procedure
Hyoungsuk Jeon, Centreville, VA (US); Esmael Hejazi Dinan, Herndon, VA (US); Alireza Babaei, Fairfax, VA (US); Hua Zhou, Herndon, VA (US); Kai Xu, Herndon, VA (US); and Kyungmin Park, Vienna, VA (US)
Assigned to Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed by Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed on Nov. 9, 2021, as Appl. No. 17/522,588.
Application 17/522,588 is a continuation of application No. 16/536,788, filed on Aug. 9, 2019, granted, now 11,219,062.
Claims priority of provisional application 62/716,895, filed on Aug. 9, 2018.
Prior Publication US 2022/0070929 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/0808 (2024.01); H04B 7/06 (2006.01); H04B 17/318 (2015.01); H04L 1/00 (2006.01); H04L 5/00 (2006.01); H04W 16/14 (2009.01); H04W 72/23 (2023.01); H04W 74/02 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 74/0808 (2013.01) [H04B 7/0695 (2013.01); H04B 17/318 (2015.01); H04L 1/0026 (2013.01); H04L 5/0051 (2013.01); H04W 16/14 (2013.01); H04W 72/23 (2023.01); H04W 74/02 (2013.01); H04W 74/0833 (2013.01)] 33 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a wireless device, a plurality of downlink reference signals of a cell;
determining a first resource for random access, wherein the first resource is associated with a first downlink reference signal of the plurality of downlink reference signals of the cell;
determining, based on a failure of a first listen-before-talk (LBT) procedure, that the first resource is occupied;
determining, based on the failure of the first LBT procedure, a second resource for random access, wherein the second resource is associated with a second downlink reference signal of the plurality of downlink reference signals of the cell; and
based on a success of a second LBT procedure, transmitting, via the second resource, a preamble for a random access procedure.