US 11,950,279 B2
Communication channel failure detection and recovery
Ali Cirik, Herndon, VA (US); Esmael Dinan, McLean, VA (US); Yunjung Yi, Vienna, VA (US); Hua Zhou, Herndon, VA (US); and Hyoungsuk Jeon, Centreville, VA (US)
Assigned to Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed by Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed on Sep. 30, 2020, as Appl. No. 17/038,742.
Claims priority of provisional application 62/908,473, filed on Sep. 30, 2019.
Prior Publication US 2021/0100031 A1, Apr. 1, 2021
Int. Cl. H04W 74/08 (2009.01); H04W 24/04 (2009.01); H04W 74/0808 (2024.01); H04W 74/0833 (2024.01); H04W 76/19 (2018.01)
CPC H04W 74/0808 (2013.01) [H04W 24/04 (2013.01); H04W 74/0833 (2013.01); H04W 76/19 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining, by a wireless device, a quantity of listen-before-talk (LBT) failures for an active uplink bandwidth part (BWP) of a cell;
sending, based on the quantity satisfying a threshold, an uplink signal associated with an LBT failure recovery procedure for the active uplink BWP of the cell; and
cancelling the LBT failure recovery procedure based on at least one of:
receiving, by the wireless device and during the LBT failure recovery procedure, LBT failure recovery reconfiguration parameters for the cell;
receiving, by the wireless device and during the LBT failure recovery procedure, downlink information indicating BWP switching for the cell;
deactivating the cell during the LBT failure recovery procedure; or
receiving, by a medium access control (MAC) layer of the wireless device from a radio resource control (RRC) layer of the wireless device and during the LBT failure recovery procedure, a request to reset the MAC layer.