US 11,949,552 B2
Beam failure recovery of a secondary cell
Ali Cagatay Cirik, Chantilly, VA (US); Esmael Hejazi Dinan, McLean, VA (US); Hua Zhou, Vienna, VA (US); Alireza Babaei, Fairfax, VA (US); Hyoungsuk Jeon, Centreville, VA (US); Kyungmin Park, Vienna, VA (US); and Kai Xu, Herndon, VA (US)
Assigned to Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed by Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed on Mar. 16, 2023, as Appl. No. 18/185,119.
Application 18/185,119 is a continuation of application No. 17/591,331, filed on Feb. 2, 2022, granted, now 11,646,932.
Application 17/591,331 is a continuation of application No. 16/671,784, filed on Nov. 1, 2019, granted, now 11,283,674, issued on Mar. 22, 2022.
Claims priority of provisional application 62/754,125, filed on Nov. 1, 2018.
Prior Publication US 2023/0224208 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 41/0668 (2022.01); H04B 7/06 (2006.01); H04B 7/08 (2006.01); H04W 72/044 (2023.01); H04W 72/21 (2023.01); H04W 72/23 (2023.01); H04W 72/56 (2023.01)
CPC H04L 41/0668 (2013.01) [H04W 72/21 (2023.01); H04W 72/23 (2023.01); H04W 72/56 (2023.01); H04W 72/046 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method comprising:
triggering, by a wireless device and based on detection of a beam failure of a secondary cell, a scheduling request for beam failure recovery (BFR) of the secondary cell; and
based on an active uplink bandwidth part (BWP) of a first cell having no valid physical uplink control channel (PUCCH) resource for the scheduling request:
initiating, via the first cell, a random access procedure; and
cancelling the scheduling request.