Base Station Power Amplifier Control for Low Traffic
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for reducing power consumption in wireless signal processing units, particularly in mobile communication systems, are inefficient, especially when traffic is low, and struggle to adapt to real-time traffic changes.
Innovation Solution
A method and apparatus that dynamically control the power amplifier (PA) by turning it off during unused symbol durations, utilizing signal properties and real-time traffic situations, applicable to both TDD and FDD systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If PA bias is adjusted according to traffic situation, then power consumption is reduced, but throughput cannot be satisfied when user traffic suddenly increases
Solution Approach 1:
The PA bias voltage is dynamically adjusted based on real-time traffic load conditions. The base station controller monitors traffic load and adjusts the PA bias voltage accordingly - reducing it during low traffic periods to save power, and increasing it during high traffic periods to maintain throughput performance. This dynamic adaptation resolves the contradiction between power savings and throughput satisfaction.
Solution Approach 2:
The invention changes the PA bias voltage parameter based on traffic conditions. By varying the bias voltage level according to actual traffic load, the system optimizes the trade-off between power consumption and throughput. The bias voltage serves as a controllable parameter that can be adjusted to achieve different operating points.
2Use of energy by moving object
If PA efficiency is increased for maximum power, then power consumption is reduced, but efficiency is reduced when traffic is low
Solution Approach 1:
The PA operating point is dynamically adjusted by changing the bias voltage according to traffic load. During low traffic periods, the PA operates at a lower bias voltage with reduced power consumption. During high traffic periods, the bias voltage is increased to maintain high PA efficiency and meet throughput demands. This dynamic operation resolves the contradiction between power savings and efficiency maintenance.
3Use of energy by moving object
If PA bias is turned off during unused symbol duration, then power consumption is reduced, but real-time adaptation to traffic changes is limited
Solution Approach 1:
The system implements a feedback mechanism where the base station controller continuously monitors traffic load conditions and adjusts the PA bias voltage in real-time based on this feedback. This closed-loop control enables the system to adapt quickly to changing traffic conditions, resolving the limitation of static or pre-configured bias settings and achieving both power savings and real-time adaptability.
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
An embodiment of the present disclosure may provide a power consumption controlling method and apparatus. An embodiment of the present disclosure may provide a method and apparatus for controlling power consumption by a base station, the method comprising: determining empty symbol duration in at least one subframe; and performing a power amplifier (PA) on/off operation based on the determination result. Further, an embodiment of the present disclosure may provide a method and apparatus for controlling power consumption by a base station, the method comprising: generating baseband in-phase/quadrature-phase (IQ) data; determining whether the baseband IQ data includes data which must be transmitted for a predetermined time; and controlling a PA on/off based on the determination result and a transient of a power amplifier (PA).