Mobile Terminal PA Gain Switching Point for Lower Power Draw
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Solution Overview
Problem
The challenge in reducing power consumption in mobile terminals, particularly in the power amplifier, is that the power consumption is fixed according to transmitting power, making it difficult to optimize battery life with increasing smartphone functions and large-screen applications.
Innovation Solution
A method and device that dynamically adjust the gain switching point of the power amplifier by increasing it when the difference between the current transmitting power and the gain switching point is less than a preset threshold, extending the low-medium gain working range and improving Power-Added Efficiency (PAE), thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmitting power is increased to meet communication requirements, then the communication quality is improved, but the power consumption of the power amplifier increases
Solution Approach 1:
The patent applies dynamics by making the gain switching point adjustable rather than fixed. The base station dynamically changes the gain switching point based on the terminal's channel conditions and transmission needs, allowing the power amplifier to operate in different gain modes (low-gain or high-gain) to optimize the trade-off between communication quality and power consumption under varying conditions.
Solution Approach 2:
The patent changes the parameter of the gain switching point to resolve the contradiction. By adjusting the gain switching point parameter, the system can switch between different power amplifier gain modes, enabling efficient power consumption at low transmit powers while maintaining adequate communication quality when higher powers are needed.
2Use of energy by moving object
If the gain switching point is adjusted frequently to optimize power consumption, then the power efficiency is improved, but the system stability deteriorates due to repeated adjustments
Solution Approach 1:
The patent applies preliminary action by having the base station predict or pre-determine the appropriate gain switching point based on channel conditions before the terminal actually needs to transmit. This allows the terminal to configure its power amplifier in advance with the correct gain switching point, avoiding frequent adjustments during actual transmission and thereby maintaining system stability while optimizing power efficiency.
Solution Approach 2:
The patent uses feedback mechanisms where the base station monitors channel conditions and provides feedback to the terminal about the appropriate gain switching point to use. This feedback loop allows the system to adapt to changing conditions without requiring frequent real-time adjustments during transmission, thus maintaining stability while improving power efficiency.
Data Source
AI summary
Provided is a method and device for reducing the power consumption of a mobile terminal. The method for reducing the power consumption of the mobile terminal includes the following steps: the current transmitting power of the mobile terminal and the current gain switching point of a power amplifier are obtained; when the difference between the obtained current transmitting power and the current gain switching point is less than a preset gain difference, the current gain switching point of the mobile terminal is increased by a first preset value. In the method for reducing the power consumption of the mobile terminal provided by the disclosure, when the difference between the obtained current transmitting power and the current gain switching point is less than the preset gain difference, the current gain switching point of the mobile terminal is increased by the first preset value, so that the low-medium gain working range of the power amplifier of the mobile terminal is extended, and the Power-Added Efficiency (PAE) is improved, thereby reducing the power consumption of the power amplifier.