Invention Grant
- Patent Title: Uplink listen-before-talk failure recovery
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Application No.: US17090641Application Date: 2020-11-05
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Publication No.: US11553523B2Publication Date: 2023-01-10
- Inventor: Ozcan Ozturk , Xiaoxia Zhang , Jing Sun , Andrei Dragos Radulescu
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Qualcomm Incorporated
- Main IPC: H04W74/08
- IPC: H04W74/08 ; H04W72/04 ; H04W74/00 ; H04W76/19 ; H04W80/02 ; H04W16/14 ; H04L5/00

Abstract:
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a bandwidth part (BWP) to switch to after identifying consistent uplink listen-before-talk (LBT) failures on a first BWP based on parameters indicated by a base station. For example, the base station may transmit a switching parameter to the UE that the UE then uses to switch to a second BWP based on identifying the consistent uplink LBT failures on the first BWP. Subsequently, after selecting the second BWP, the UE may attempt to use the second BWP for uplink transmissions (e.g., after performing a random access procedure). Additionally, the UE may indicate the consistent uplink LBT failures to a base station associated with the failed BWP based on a type of cell that is using that failed BWP.
Public/Granted literature
- US20210144760A1 UPLINK LISTEN-BEFORE-TALK FAILURE RECOVERY Public/Granted day:2021-05-13
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