Random access and consistent LBT failure recovery
AssigneePanPsy Technologies, LLC
InventorAlireza Babaei
Life of this patent
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Abstract
A wireless device receives configuration parameters comprising first random access parameters and second random access parameters. The wireless device may initiate, based on the first random access parameters, a first random access process on a first BWP of a primary cell. The wireless device may stop the first random access process in response to triggering consistent LBT failure for the primary cell. The wireless device may switch from the first BWP to a second BWP of the primary cell as an active BWP. The wireless device may initiate a second random access process on the second BWP for consistent LBT failure recovery and based on the second random access parameters.
Claims16
A method comprising:
- receiving, by a wireless device, configuration parameters comprising first random access parameters, for beam failure recovery, and second random access parameters;
- initiating, based on the first random access parameters and in response to detecting a beam failure, a first random access process on a first bandwidth part (BWP) of a primary cell;
- stopping the first random access process in response to triggering consistent listen-before-talk (LBT) failure for the primary cell;
- switching from the first BWP to a second BWP of the primary cell as an active BWP;
- initiating a second random access process on the second BWP for consistent LBT failure recovery and based on the second random access parameters;
- and
- initiating a third random access process for beam failure recovery after the second random access process is successfully completed.
A wireless device comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
- receive configuration parameters comprising first random access parameters, for beam failure recovery, and second random access parameters;
- initiate, based on the first random access parameters and in response to detecting a beam failure, a first random access process on a first bandwidth part (BWP) of a primary cell;
- stop the first random access process in response to triggering consistent listen-before-talk (LBT) failure for the primary cell;
- switch from the first BWP to a second BWP of the primary cell as an active BWP;
- initiate a second random access process on the second BWP for consistent LBT failure recovery and based on the second random access parameters;
- and
- initiate a third random access process for beam failure recovery after the second random access process is successfully completed.
A system comprising:
- a base station;
- and
- a wireless device comprising:
- one or more processors;
- and memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
- receive, from the base station, configuration parameters comprising first random access parameters, for beam failure recovery, and second random access parameters;
- initiate, based on the first random access parameters and in response to detecting a beam failure, a first random access process on a first bandwidth part (BWP) of a primary cell;
- stop the first random access process in response to triggering consistent listen-before-talk (LBT) failure for the primary cell;
- switch from the first BWP to a second BWP of the primary cell as an active BWP;
- initiate a second random access process on the second BWP for consistent LBT failure recovery and based on the second random access parameters;
- and initiate a third random access process for beam failure recovery after the second random access process is successfully completed.
Dependencies are inferred from the claim text.