Wireless Transceiver Power Amplifier Configuration for Resource Block Optimization
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Solution Overview
Problem
Wireless communication devices face inefficiencies in power amplifier current drain and heat dissipation due to high data rates, which reduce battery life and increase heat generation, as they require more linear headroom and transmit power, especially with wider resource block allocations.
Innovation Solution
The method involves optimizing power amplifier operation by configuring power amplifiers based on resource block allocations, using techniques such as multi-state power amplifier efficiency, average power tracking, and envelope tracking to degrade power amplifier distortion, thereby improving current drain efficiency while maintaining signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power amplifier linearity is increased to support high data rates with high peak-to-average ratios, then signal quality is improved, but power amplifier efficiency deteriorates and current drain increases
Solution Approach 1:
The patent applies dynamics by making the power amplifier's operating state adjustable based on resource block allocation. The system dynamically switches between different power amplifier configurations (first and second configurations) depending on whether the resource block allocation is below or above a threshold, allowing optimal performance for each operating condition
Solution Approach 2:
The patent changes physical parameters of the power amplifier by adjusting its operating configuration based on resource block allocation. When resource block allocation exceeds a threshold, the system transitions to a second configuration that accepts higher distortion levels, effectively changing the amplifier's linearity parameter to match the relaxed requirements of wideband transmissions
2Productivity
If transmit power is increased to maintain constant energy per bit at high data rates, then data transmission capability is improved, but current drain and heat dissipation increase
Solution Approach 1:
The patent changes the power amplifier's operating parameters based on resource block allocation thresholds. By switching between different amplifier configurations, the system optimizes the trade-off between transmit power capability and power consumption, allowing high data rate transmission while managing current drain through appropriate configuration selection
3Productivity
If resource block allocation is increased to support wider bandwidth transmissions, then data rate capability is improved, but power amplifier distortion increases and efficiency decreases
Solution Approach 1:
The system dynamically adjusts power amplifier configuration based on resource block allocation width. For narrowband transmissions (below threshold), a first configuration with higher linearity is used. For wideband transmissions (above threshold), a second configuration is activated that is optimized for wider bandwidth but accepts higher distortion, matching the relaxed linearity requirements of wideband signals
Data Source
AI summary
A method (700) and apparatus (600) optimize resource block based transmitter operation in a wireless communication device. The method can include receiving (720) a radio resource assignment including a particular resource block allocation. The method can include configuring (730) a wireless communication transceiver for the particular resource block allocation. The method can include degrading (740) power amplifier distortion of the wireless communication transceiver based on the particular resource block allocation. The power amplifier distortion can be a measure of a deviation of the power amplifier output in an analysis domain from an ideal linear amplifier.