Control of EIRP of a radio base station
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorTorbjörn Wigren
Life of this patent
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Abstract
Mechanisms for controlling average Equivalent Isotropic Radiated Power (EIRP) of a radio base station, in which a method is performed by a control device. The method comprises performing control of average EIRP of the radio base station according to a back-off power density control loop. In the back-off power density control loop, a beam width control parameter is used to vary the average EIRP generated by an antenna array of the radio base station, whereby the average EIRP is selectively reduced based on the beam width control parameter.
Claims17
A method for controlling average Equivalent Isotropic Radiated Power (EIRP) of a radio base station, wherein the method being performed by a control device, the method comprising:
- performing control of average EIRP of the radio base station according to a back-off power control loop,
- wherein, in the back-off power control loop, a beam width control parameter ρ is used to vary the average EIRP generated by an antenna array of the radio base station, whereby the average EIRP is selectively reduced based on the beam width control parameter ρ,
- wherein the radio base station is configured to perform beamforming using a beamformer, in which the beamformer is defined by a beam forming matrix W,
- wherein reciprocity assisted transmission (RAT) is applied, based on an estimated channel matrix Ĥ, to determine the beam forming matrix W, and
- wherein weighting of the beam forming matrix W is accomplished by weighting of the estimated channel matrix Ĥ with the beam width control parameter ρ.
A control device for controlling average Equivalent Isotropic Radiated Power (EIRP) of a radio base station, the control device comprising:
- processing circuitry;
- and
- a storage medium containing instructions which, when executed by the processing circuitry, cause the control device to:
- perform control of average EIRP. of the radio base station according to a back-off power control loop,
- wherein, in the back-off power control loop, a beam width control parameter p is used to vary the average EIRP generated by an antenna array of the radio base station, whereby the average EIRP is selectively reduced based on the beam width control parameter ρ,
- wherein the radio base station is configured to perform beamforming using a beamformer, in which the beamformer is defined by a beam forming matrix W,
- wherein reciprocity assisted transmission (RAT) is applied, based on an estimated channel matrix Ĥ, to determine the beam forming matrix W, and
- wherein weighting of the beam forming matrix W is accomplished by weighting of the estimated channel matrix Ĥ with the beam width control parameter ρ.
A non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a computer, cause a control device to perform operations for controlling average Equivalent Isotropic Radiated Power (EIRP) of a radio base station comprising:
- performing control of average EIRP of the radio base station according to a back-off power control loop,
- wherein, in the back-off power control loop, a beam width control parameter ρ is used to vary the average EIRP generated by an antenna array of the radio base station, whereby the average EIRP is selectively reduced based on the beam width control parameter ρ,
- wherein the radio base station is configured to perform beamforming using a beamformer, in which the beamformer is defined by a beam forming matrix W.
- wherein reciprocity assisted transmission (RAT) is applied, based on an estimated channel matrix Ĥ, to determine the beam forming matrix W, and
- wherein weighting of the beam forming matrix W is accomplished by weighting of the estimated channel matrix Ĥ with the beam width control parameter ρ.
Dependencies are inferred from the claim text.