Reverse Link Throttle Control for Multi-Carrier Power Amplifier Saturation
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Solution Overview
Problem
In multi-carrier wireless communication systems, existing power control techniques struggle to balance transmission power across multiple channels effectively, leading to inefficiencies and potential saturation of power amplifiers, which can result in reduced system capacity and increased interference.
Innovation Solution
The implementation of a throttle control unit that dynamically adjusts power levels for data source control, data rate control, acknowledgment, pilot, and reverse rate indicator channels across both single and multi-carrier reverse links to ensure sufficient headroom for the power amplifier, thereby optimizing power distribution and preventing amplifier saturation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing power control techniques are used to manage transmission power across multiple channels, then power distribution is maintained, but power amplifier saturation occurs and system capacity is reduced
Solution Approach 1:
The patent implements dynamic power adjustment by continuously monitoring the cumulative power across all reverse link channels and adjusting individual channel powers in real-time to maintain total power within amplifier limits, preventing saturation while maximizing system capacity
Solution Approach 2:
The patent changes the power parameters of multiple reverse link channels (data source control, data rate control, acknowledgment, pilot, reverse rate indicator channels) based on system conditions, adjusting power levels dynamically to optimize both reliability and capacity
2Reliability
If transmission power is increased across multiple channels to improve communication quality, then communication reliability is improved, but power amplifier saturation occurs causing interference
Solution Approach 1:
The patent employs feedback mechanisms where the system continuously monitors the total cumulative power across all reverse link channels and uses this information to adjust individual channel powers, ensuring that power amplifier saturation is prevented and interference is minimized while maintaining communication quality
Solution Approach 2:
The patent dynamically adjusts power levels across multiple channels based on real-time system conditions, allowing the system to adapt power distribution to prevent saturation and reduce interference while maintaining reliable communication
3Ease of operation
If power is allocated evenly across all reverse link channels, then channel balance is maintained, but power amplifier headroom is insufficient
Solution Approach 1:
The patent adjusts power parameters of individual reverse link channels based on their specific requirements and system conditions, changing power levels dynamically to maintain both balance and sufficient amplifier headroom
Solution Approach 2:
The patent implements dynamic power allocation that continuously adapts to system conditions, adjusting the balance of power across channels while ensuring sufficient headroom is maintained in the power amplifier
Data Source
AI summary
In one embodiment, the patent application comprises an access terminal, comprising a processing unit, a memory operably connected to the processing unit, a receive circuitry operably connected to the processing unit, a transmit circuitry having a power amplifier used in both single carrier and multi-carrier operations, wherein said transmit circuitry is operably connected to the processing unit, and a throttle control unit operably connected to the power amplifier, adapted to throttle power to provide sufficient headroom for the power amplifier.