Invention Grant
- Patent Title: Beam failure recovery in a secondary cell
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Application No.: US16947915Application Date: 2020-08-24
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Publication No.: US11431396B2Publication Date: 2022-08-30
- Inventor: Jung Ho Ryu , Yan Zhou , Tao Luo , Junyi Li , Kiran Venugopal , Tianyang Bai
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Harrity & Harrity, LLP
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04W72/12 ; H04W76/19 ; H04W74/08 ; H04W72/04 ; H04W80/02

Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a beam failure recovery scheduling request (BFR-SR) to a primary cell or a primary secondary cell base station based at least in part on detecting a beam failure associated with a secondary cell (SCell) link between the UE and an SCell base station. The UE may start a timer based at least in part on transmitting the BFR-SR. The UE may retransmit the BFR-SR based at least in part on the timer expiring prior to the UE receiving a response to acknowledge the BFR-SR and schedule transmission of a medium access control (MAC) control element (MAC-CE) including information to recover from the beam failure and/or the timer expiring prior to the UE transmitting the MAC-CE. Numerous other aspects are provided.
Public/Granted literature
- US20210067229A1 BEAM FAILURE RECOVERY IN A SECONDARY CELL Public/Granted day:2021-03-04
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