Beam Failure Recovery of a Secondary Cell
AssigneeComcast Cable Communications, LLC
InventorsAli Cagatay Cirik, Esmael Hejazi Dinan, Hua Zhou, Alireza Babaei, Hyoungsuk Jeon, Kyungmin Park, Kai Xu
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Abstract
Beam failure recovery (BFR) procedures for wireless communications are described. When beam failures occur on secondary cells, wireless devices may trigger a BFR procedure via an uplink resource for BFR. If a beam failure occurs for a secondary cell at a time that a wireless device does not have an uplink resource for BFR, the wireless device may perform one or more other actions for BFR of the secondary cell.
Claims21
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, cancelling the scheduling request.
A wireless device comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, configure the wireless device to:
- trigger, 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, cancel the scheduling request.
A non-transitory computer-readable medium storing instructions that, when executed, configure a wireless device to:
- trigger, 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, cancel the scheduling request.
Dependencies are inferred from the claim text.