Adaptive Receiver Switching Between High Performance and Low Power Modes
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Solution Overview
Problem
High performance receivers in wireless communication devices consume excessive power due to their design for worst-case RF environment conditions, which are rarely encountered, compromising both performance and battery life.
Innovation Solution
Implementing an adaptive receiver system that switches between a high performance receiver and a low power receiver based on detected RF channel conditions, using a controller to select the appropriate receiver for processing signals, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high performance receiver is used to handle worst case RF environment conditions, then signal reception reliability is improved, but power consumption increases
Solution Approach 1:
The receiver dynamically switches between high performance and low power modes based on detected RF channel conditions. The controller monitors channel quality indicators and adaptively selects the appropriate receiver mode, transitioning from static to dynamic operation to optimize the trade-off between reliability and power consumption.
Solution Approach 2:
The system changes operational parameters by selecting different receiver configurations based on channel conditions. When channel quality is good, the system switches to low power receiver mode; when channel quality degrades, it switches to high performance receiver mode, thereby adapting parameters to match environmental conditions.
2Reliability
If a high performance receiver is designed for worst case scenario conditions, then receiver performance is improved, but battery life decreases
Solution Approach 1:
The receiver employs dynamic mode switching that adapts to changing RF conditions. By monitoring channel quality over time and switching between operational modes, the system extends battery life by operating in low power mode during favorable conditions while maintaining adequate performance through high power mode when necessary.
Solution Approach 2:
The system periodically evaluates channel conditions and adjusts receiver mode accordingly. This periodic monitoring and switching strategy ensures that the high performance receiver is activated only when channel degradation is detected, thereby extending battery life while maintaining communication reliability.
3Use of energy by moving object
If a low power receiver is used, then power consumption is reduced, but ability to handle unfavorable RF conditions deteriorates
Solution Approach 1:
The controller acts as an intermediary that monitors channel conditions and mediates between the low power and high performance receiver modes. It detects channel quality indicators and determines when to switch modes, ensuring that the system maintains adequate performance while minimizing power consumption during favorable conditions.
Solution Approach 2:
The system dynamically adjusts receiver capabilities based on real-time channel assessments. When channel conditions are favorable, the low power receiver suffices; when conditions deteriorate, the system transitions to high performance mode, creating a dynamic adaptation strategy that balances power consumption with handling capability.
4Adaptability or versatility
If dual receiver architecture is implemented, then adaptability to different RF conditions is improved, but device complexity increases
Solution Approach 1:
The receiver system is segmented into two distinct functional units: a low power receiver for favorable conditions and a high performance receiver for unfavorable conditions. This segmentation allows each unit to be optimized for its specific operational context, improving overall adaptability while managing complexity through functional separation.
Solution Approach 2:
The dual receiver architecture provides multi-functionality by enabling the system to operate in two different receiver modes depending on channel conditions. The controller manages both receiver types, allowing the system to universally handle both favorable and unfavorable RF environments with a single integrated solution.
Data Source
AI summary
In general, the disclosure is directed to techniques for combining a high performance receiver and a low power receiver within a wireless communication device (WCD) to reduce power consumption. Upon receiving a signal from a base station, a controller within the WCD detects one or more channel conditions of a radio frequency (RF) environment between the base station and the WCD. The controller selects a high performance receiver to process the received signal when the RF environment is unfavorable and selects a low power receiver to process the received signal when the RF environment is favorable. In this manner, the WCD implements an adaptive receiver that adapts its receiver structure according to RF channel conditions.