Base Station Power Amplifier Scheduling for Low-Load Efficiency

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Solution Overview

Problem

Power amplifiers in communication base stations have low efficiency due to imbalanced radio service traffic and inadequate feature management, leading to inefficient energy usage and utilization.

Innovation Solution

A method and apparatus for improving power amplifier efficiency by jointly managing power amplifier features and radio resources, categorizing services into real-time and non-real-time services, and scheduling power allocation to optimize transmit power and reduce energy consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If power amplifier operates in low load region, then it can handle light traffic, but transform efficiency is low and energy consumption is high

Engineering Contradiction:
Improvetraffic handling capacityVSAvoidpower amplifier transform efficiency
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent implements dynamic operation mode switching for the power amplifier, transitioning between different working states (normal mode, green mode, and intermediate modes) based on real-time traffic load conditions. This dynamic adjustment allows the power amplifier to operate at optimal efficiency points across varying load conditions, resolving the contradiction between handling light traffic and maintaining high transform efficiency.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters including power amplifier output power, switching thresholds, and operation modes according to traffic load variations. By adjusting these parameters dynamically, the power amplifier can maintain high efficiency even when handling variable traffic loads, addressing the efficiency loss in low load regions.

Inventive Principle:
Principle #35Parameter changes

2Loss of energy

If power amplifier operates in high efficiency region, then transform efficiency is high, but it cannot handle heavy load traffic requirements

Engineering Contradiction:
Improvepower amplifier transform efficiencyVSAvoidtraffic handling capacity
Core Design Contradiction:
Loss of energyVSProductivity

Solution Approach 1:

The system performs preliminary classification of services into real-time services (RTS) and non-real-time services (NRTS). By pre-identifying which services can be delayed or rescheduled, the system can temporarily reduce power amplifier load to maintain high efficiency, then handle the accumulated NRTS traffic later when conditions permit, thus resolving the contradiction between efficiency and heavy load handling.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent segments services into different categories (RTS and NRTS) with different quality of service requirements. This segmentation allows the system to prioritize RTS services while deferring NRTS services, enabling the power amplifier to operate efficiently during peak RTS periods without permanently sacrificing overall traffic handling capacity.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If conventional radio resource management is used, then simple scheduling is implemented, but power amplifier feature recognition is insufficient and utilization is low

Engineering Contradiction:
Improvescheduling simplicityVSAvoidpower amplifier utilization rate
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The system implements feedback mechanisms that continuously monitor power amplifier operating conditions, traffic load characteristics, and efficiency metrics. This feedback enables automatic adjustment of scheduling parameters and operation modes, improving power amplifier utilization without significantly increasing operational complexity, as the adjustments are made automatically based on monitored conditions.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The power amplifier management system operates autonomously, automatically classifying services, determining optimal operation modes, and adjusting scheduling parameters without requiring complex external control. This self-service approach maintains scheduling simplicity while significantly improving power amplifier utilization through intelligent, automated decision-making.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS8472997B2Power amplification method and apparatus
Publication Date: 2013.06.25 HUAWEI TECH CO LTD
  • US8472997B2 patent drawing
  • US8472997B2 patent drawing
  • US8472997B2 patent drawing

AI summary

A method for implementing power amplification processing includes: obtaining power amplifier feature information and service requirement information of a power amplifier, where the service requirement information includes requirement information of a real-time service and requirement information of a non-real-time service; determining a regulation parameter and a scheduling parameter of the power amplifier according to the service requirement information and the power amplifier feature information; and performing, by the power amplifier, transmit power regulation according to the regulation parameter to obtain amplified transmit power.