Fast power amplifier control system and fast power amplifier control method

Abstract

Embodiments of the present invention provide a system and method for quickly power amplifier control. The method includes: before a fixed gain amplifier is disabled and after an automatic gain controller adjusts gain for the last time, reading a reference transmit power value from the automatic gain controller, reading a gain level from the fixed gain amplifier, and saving the reference transmit power value and the gain level in a storage module; and before the fixed gain amplifier is enabled and after the automatic gain controller adjusts gain for the last time, writing the reference transmit power value saved in the storage module into the automatic gain controller and writing the gain level saved in the storage module into the fixed gain amplifier. With the method according to the embodiments of the present invention, the link gain state when the fixed gain amplifier is enabled can be consistent with the link gain state before the fixed gain amplifier is disabled. This ensures that the transmit power of an uplink signal is stable with good quality.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a system and method for controlling a fast power amplifier. Background technique [0002] Quickly Power Amplifier Control (QPC for short), as the latest power-saving technology for mobile terminals, can turn on the uplink power amplifier (Power Amplifier, PA for short) immediately when the mobile terminal has data to send The signal of the base station is finally amplified. After the mobile terminal sends data to the base station, the uplink PA is turned off in time and quickly, thereby saving the power consumption of the uplink PA. [0003] In the existing QPC technology, in order to keep the transmit power of the terminal constant, the uplink power amplification link of the existing terminal adopts a cascade method of a first-stage variable gain amplifier and a first-stage fixed gain amplifier, and uses Automatic Gain Control (Automatic Gain Control). , referred...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, when the data is sent from the mobile terminal to the base station, the uplink PA will be turned off directly. The automatic gain controller does not know that the uplink PA has been turned off. During the time period when the uplink PA is turned off, it will Continue to increase the transmit power until it is adjusted to the maximum power. When the uplink PA is turned on again, the uplink PA will be turned on with full gain and transmit signals, so that the transmit power of the mobile terminal is inconsistent when the PA is turned on and off.

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