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US 8,412,271 B2Granted
Boosted, dedicated reference signal
AssigneeMarvell World Trade Ltd.
InventorDaniel Yellin
Life of this patent
Estimating the term…
Abstract
A base station includes a reference signal generator, a boost selector, and a transmitter. The reference signal generator provides a dedicated reference signal to be transmitted over a plurality of antennas to a dedicated user device. The boost selector selects a dedicated boost level that is specific for the dedicated reference signal. The boost selector applies the dedicated boost level to the dedicated reference signal and not to a data signal to be transmitted to the dedicated user device. The boost selector generates a boosted dedicated reference signal. The transmitter transmits the boosted dedicated reference signal and the data signal to the dedicated user device after beamforming weights are applied to the boosted dedicated reference signal and to the data signal.
Claims18
A base station, comprising:
- a reference signal generator to provide a dedicated reference signal to be transmitted over a plurality of antennas to a first device of a plurality of devices;
- a boost selector configured to
- select a dedicated boost level specific for the dedicated reference signal such that a sum of the dedicated boost level and a channel estimation processing gain yields a predetermined demodulation penalty for the first device of the plurality of devices,
- apply the dedicated boost level to the dedicated reference signal and not to a data signal to be transmitted to the first device of the plurality of devices, and
- generate a boosted dedicated reference signal for the first device of the plurality of devices,
- wherein the boost selector applies the dedicated boost level to the dedicated reference signal to change a power level of the dedicated reference signal relative to the data signal;
- and
- a transmitter to transmit the boosted dedicated reference signal and the data signal to the first device of the plurality of devices after beamforming weights are applied to the boosted dedicated reference signal and to the data signal.
5 more elements
A method, comprising:
- receiving, at a first device of a plurality of devices, a boosted dedicated reference signal that is boosted by a dedicated boost level specific to the first device of the plurality of devices by a base station such that a sum of the dedicated boost level and a channel estimation processing gain yields a predefined demodulation penalty for the first device of the plurality of devices, and a data signal that is not boosted by the dedicated boost level by the base station before applying beamforming weights to the boosted dedicated reference signal and to the data signal, wherein the dedicated boost level changes a power level of the dedicated reference signal relative to the data signal;
- determining the dedicated boost level for the first device of the plurality of devices;
- and
- demodulating the data signal based on the dedicated boost level and a channel estimate.
1 more element
A first device, comprising:
- a receiver to receive a boosted dedicated reference signal that is boosted by a dedicated boost level specific to the first device of a plurality of devices by a base station such that a sum of the dedicated boost level and a channel estimation processing gain yields a predefined demodulation penalty for the first device of the plurality of devices, and a data signal that is not boosted by the dedicated boost level by the base station before applying beamforming weights to the boosted dedicated reference signal and to the data signal, wherein the dedicated boost level changes a power level of the dedicated reference signal relative to the data signal;
- a boost determiner to determine the dedicated boost level for the first device of the plurality of devices;
- and
- a data demodulator to demodulate the data signal based on the dedicated boost level and a channel estimate.
1 more element
A base station, comprising:
- a reference signal generator to provide a dedicated reference signal to be transmitted over a plurality of antennas to a first device of a plurality of devices;
- a boost selector configured to
- select a dedicated boost level indicative of a power level to be specifically applied to the dedicated reference signal,
- apply the dedicated boost level to the dedicated reference signal and not to a data signal to be transmitted to the first device of the plurality of devices, and
- generate a boosted dedicated reference signal for the first device of the plurality of devices,
- wherein the boost selector applies the dedicated boost level to the dedicated reference signal to change the power level of the dedicated reference signal relative to the data signal;
- and
- a transmitter configured to transmit from the base station to the first device of the plurality of devices a signal indicating a strength of the power level applied to the dedicated reference signal, and the boosted dedicated reference signal and the data signal after beamforming weights are applied to the boosted dedicated reference signal and to the data signal.
5 more elements
Dependencies are inferred from the claim text.