Patent ID: 8798563

Claim:
A method for decreasing power consumption of a power amplifier, comprising: obtaining a compensation power control value, wherein the compensation power control value is a power control value that is input to the power amplifier when an input voltage of the power amplifier is decreased to a minimum value of the input voltage under a condition of guaranteeing that a preset transmit power value of an antenna port is unchanged, and the minimum value of the input voltage is a minimum input voltage that can guarantee normal operation of the power amplifier when a preset power control value is input to the power amplifier; and inputting the minimum value of the input voltage and the compensation power control value to the power amplifier to control the power amplifier to output the preset power value of the antenna port, wherein the obtaining the compensation power control value comprises: obtaining a first power value of the antenna port, wherein the first power value of the antenna port is output by the power amplifier when the preset power control value and a rated input voltage are input to the power amplifier; obtaining the minimum value of the input voltage when the preset power control value is input to the power amplifier and the normal operation of the power amplifier is guaranteed; obtaining a second power value of the antenna port, wherein the second power value of the antenna port is output by the power amplifier when the preset power control value and the minimum value of the input voltage are input to the power amplifier; adding the first power value of the antenna port and a difference between the first power value of the antenna port and the second power value of the antenna port, to obtain compensation power value of the antenna port; and searching, according to the compensation power value of the antenna port, a mapping relationship between the power control value and the power value of the antenna port when the rated input voltage is input to the power amplifier, so as to obtain the compensation power control value corresponding to the compensation power value of the antenna port.