US 10,979,128 B1
BEAM FAILURE AND CONSISTENT LISTEN BEFORE TALK FAILURE RECOVERYGeneral
US 10,979,128 B1
BEAM FAILURE AND CONSISTENT LISTEN BEFORE TALK FAILURE RECOVERY
Tech Center:
2400 Networking, Multiplexing, Cable, and Security
Examiner:
Marcus Smith
Art Unit:
2419 Multiplex and VoIP
Agent:
Inventors:
Alireza Babaei
Assignee:
Priority:
12/07/20
Filed:
12/07/20
Granted:
04/13/21
Expiration:
12/07/39
Abstract
A wireless device receives message(s) comprising: first configuration parameters for beam failure recovery; and second configuration parameters for LBT failure recovery. The wireless device initiates, based on the first configuration parameters and in response to detecting a beam failure on a primary cell, a first random access process on a first BWP of the primary cell for beam failure recovery. The wireless device triggers, based on the second configuration parameters, consistent LBT failure for the primary cell. The wireless device stops the first random access process, for the beam failure recovery, based on the triggering the consistent LBT failure. The wireless device switches from the first BWP of the primary cell to a second BWP of the primary cell as an active BWP of the primary cell. The wireless device initiates a second random access process on the second BWP of the primary cell.