Method and apparatus for transmitting LTE waveforms in shared spectrum by carrier sensing
AssigneeTexas Instruments Incorporated
InventorsRalf Matthias Bendlin, Anthony Edet Ekpenyong, Pierre Bertrand, Brian F. Johnson
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Abstract
A method of operating a long term evolution (LTE) communication system on a shared frequency spectrum is disclosed. A user equipment (UE) is initialized on an LTE frequency band. A base station (eNB) monitors the shared frequency spectrum to determine if it is BUSY. The eNB transmits to the UE on the shared frequency spectrum if it is not BUSY. The eNB waits for a first time if it is BUSY and directs the UE to vacate the shared frequency spectrum after the first time.
Claims22
A method of operating a communication system on a shared frequency spectrum, comprising:
- initializing a user equipment (UE) on a primary serving cell (PCell) operating on a licensed frequency spectrum;
- transmitting data from the UE to at least one secondary serving cell (SCell) operating on the shared frequency spectrum;
- monitoring the at least one SCell by the UE to determine a BUSY status;
- transmitting to a base station on the at least one SCell if it is not BUSY;
- and
- reporting the BUSY status of the at least one SCell to the base station if it is BUSY.
A method of operating a wireless communication system on a shared frequency spectrum, comprising:
- initializing a user equipment (UE) on a primary serving cell on a licensed frequency spectrum;
- configuring the UE to communicate with a secondary serving cell (SCell) on the shared frequency spectrum;
- and
- receiving at the UE a radio resource management (RRM) report corresponding to the SCell if a primary user is detected on the shared frequency spectrum.
An apparatus, comprising:
- circuitry for initializing a user equipment (UE) on a primary serving cell (PCell) operating on a licensed frequency spectrum;
- circuitry for transmitting data from the UE to at least one secondary serving cell (SCell) operating on a shared frequency spectrum;
- circuitry for monitoring the at least one SCell by the UE to determine a BUSY status;
- circuitry for transmitting to a base station on the at least one SCell if it is not BUSY;
- and
- circuitry for reporting the BUSY status of the at least one SCell to the base station if it is BUSY.
An apparatus, comprising:
- circuitry for initializing a user equipment (UE) on a primary serving cell on a licensed frequency spectrum;
- circuitry for configuring the UE to communicate with a secondary serving cell (SCell) on a shared frequency spectrum;
- and
- circuitry for receiving at the UE a radio resource management (RRM) report corresponding to the SCell if a primary user is detected on the shared frequency spectrum.
Dependencies are inferred from the claim text.