Apparatus and method for controlling transmission power
AssigneeSamsung Electronics Co., Ltd.
InventorHyunseok Yu
Life of this patent
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Abstract
An apparatus and method are provided for controlling a transmission power of a wireless communications device to comply with an output energy limit during a measurement period, including calculating a target output energy based on a communications channel; calculating a first average output energy corresponding to a previous period having a duration substantially equal to the measurement period; calculating a second average output energy by low-pass-filtering the target output energy and the first average output energy; and limiting the transmission power of the wireless communications device based on an energy margin between the output energy limit and the second average output energy.
Claims20
A method for controlling a transmission power of a wireless communications device to comply with an output energy limit during a measurement period, the method comprising:
- calculating a target output energy based on a communications channel;
- obtaining a first average output energy corresponding to a previous period having a duration substantially equal to the measurement period;
- calculating a second average output energy by low-pass-filtering the target output energy and the first average output energy;
- and
- limiting the transmission power of the wireless communications device based on an energy margin between the output energy limit and the second average output energy.
A method for controlling a transmission power of a wireless communications device to comply with an output energy limit during a measurement period divided into a plurality of windows, the method comprising:
- calculating a target output energy for at least one of the plurality of windows based on a communications channel;
- obtaining a first remaining output energy for a first of the plurality of windows based on the output energy limit and the target output energy;
- calculating a second remaining output energy for a remainder of the plurality of windows based on the target output energy and the first remaining output energy;
- and
- limiting the transmission power based on the output energy limit and the second remaining output energy.
A wireless communications device for controlling a transmission power to comply with an output energy limit during a measurement period divided into a plurality of windows, the wireless communications device comprising:
- at least one antenna module comprising an antenna, a power detector, and a temperature sensor;
- a back-end module configured to provide, to the at least one antenna module, a high-frequency signal generated by processing a baseband signal in a transmission mode;
- and
- a signal processing unit configured to generate the baseband signal in the transmission mode,
- wherein the signal processing unit is further configured to adjust target output energy for a current one of the plurality of windows based on measurement information provided from the power detector and the temperature sensor, calculate an energy margin based on output energy output during a previous at least one of the plurality of windows, the adjusted target output energy and the output energy limit, and limit the transmission power based on the energy margin.
Dependencies are inferred from the claim text.