User equipment and method for FBE operation in unlicensed band
AssigneeFG Innovation Company Limited
InventorsHai-Han Wang, Heng-Li Chin, Chia-Hung Wei
Life of this patent
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Abstract
A user equipment (UE) and a method for frame-based equipment (FBE) operation in an unlicensed band are provided. The method includes receiving, from a base station (BS), a first parameter indicating a first periodicity of a fixed frame period (FFP) used when the BS acts as an initiating device for the FBE operation; and receiving, from the BS, a second parameter indicating a second periodicity of the FFP used when the UE acts as the initiating device for the FBE operation.
Claims20
A user equipment (UE) for frame-based equipment (FBE) operation in an unlicensed band, the UE comprising:
- at least one processor;
- and
- at least one memory coupled to the at least one processor, wherein the at least one memory stores computer-executable instructions that, when executed by the processor, cause the UE to:
- receive, from a base station (BS), a first parameter indicating a first periodicity of a first plurality of fixed frame periods (FFPs) used when the BS acts as an initiating device for the FBE operation in a cell;
- receive, from the BS, a first Radio Resource Control (RRC) configuration, the first RRC configuration including a second parameter indicating a second periodicity of a second plurality of FFPs used when the UE acts as the initiating device for the FBE operation in the cell;
- receive, from the BS, an indication for enabling the UE to act as the initiating device for the FBE operation for a first one of the second plurality of FFPs in the cell;
- perform a clear channel assessment (CCA) on a channel of the unlicensed band immediately before a start of the first one of the second plurality of FFPs in response to receiving the indication;
- and
- perform an uplink (UL) transmission on the channel to initiate the first one of the second plurality of FFPs after determining that the channel is clear, wherein:
- the UL transmission ends before an idle period of the first one of the second plurality of FFPs determined based on the second parameter,
- in a case that the UL transmission is scheduled by a UL grant, the indication is indicated by a ChannelAccess-CPext-CAPC field in a Downlink Control Information (DCI) format carrying the UL grant, and the DCI format is received in one of the first plurality of FFPs.
A method performed by a user equipment (UE) for frame-based equipment (FBE) operation in an unlicensed band, the method comprising:
- receiving, from a base station (BS), a first parameter indicating a first periodicity of a first plurality of fixed frame periods (FFPs) used when the BS acts as an initiating device for the FBE operation in a cell;
- receiving, from the BS, a first Radio Resource Control (RRC) configuration, the first RRC configuration including a second parameter indicating a second periodicity of a second plurality of FFPs used when the UE acts as the initiating device for the FBE operation in the cell;
- receiving, from the BS, an indication for enabling the UE to act as the initiating device for the FBE operation for a first one of the second plurality of FFPs in the cell;
- performing a clear channel assessment (CCA) on a channel of the unlicensed band immediately before a start of the first one of the second plurality of FFPs in response to receiving the indication;
- and
- performing an uplink (UL) transmission on the channel to initiate the first one of the second plurality of FFPs after determining that the channel is clear, wherein:
- the UL transmission ends before an idle period of the first one of the second plurality of FFPs determined based on the second parameter,
- in a case that the UL transmission is scheduled by an UL grant, the indication is indicated by a ChannelAccess-CPext-CAPC field in a Downlink Control Information (DCI) format carrying the UL grant, and the DCI format is received in one of the first plurality of FFPs.
Dependencies are inferred from the claim text.