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US 2022/0070928 A1Published application
Cell and bandwidth part operations in unlicensed bands
AssigneeSamsung Electronics Co., Ltd.
InventorsAlireza Babaei, Esmael Hejazi Dinan, Hyoungsuk Jeon, Hua Zhou, Kyungmin Park, Ali Cagatay Cirik
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Abstract
A wireless device receives one or more messages comprising a parameter indicating a first value of a listen before talk (LBT) counter. The LBT counter is incremented based on an LBT procedure indicating an LBT failure for an uplink transmission via a first bandwidth part. Based on the LBT counter reaching the first value, a switch is made from the first bandwidth part to a second bandwidth part as an active bandwidth part.
Claims17
A method comprising:
- receiving, by a wireless device, a radio resource control (RRC) message comprising configuration parameters associated with a first bandwidth part (BWP) of a cell and a second BWP of the cell, and a first parameter indicating a first value associated with a listen before talk (LBT) counter for the cell;
- performing a first LBT procedure for a first uplink transmission via the first BWP;
- incrementing the LBT counter for indicating a busy channel based on the first LBT procedure;
- and
- switching from the first BWP to a second BWP as an active BWP, in case that the LBT counter reaches the first value.
2 more elements
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 a radio resource control (RRC) message comprising configuration parameters associated with a first bandwidth part (BWP) of a cell and a second BWP of the cell, and a first parameter indicating a first value associated with a listen before talk (LBT) counter for the cell,
- perform a first LBT procedure for a first uplink transmission via the first BWP,
- increment the LBT counter for indicating busy channel based on the first LBT procedure, and
- switch from the first BWP to a second BWP as an active BWP, in case that the LBT counter reaches the first value.
4 more elements
Dependencies are inferred from the claim text.