Dynamic Receiver Selection for Wireless Power Optimization
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Solution Overview
Problem
Wireless communication devices face challenges in achieving an optimal balance between power savings and data decoding performance, particularly in environments with interference, where high-power receivers are unnecessary but low-power receivers are insufficient.
Innovation Solution
A wireless user equipment device is configured with a high-power high-performance receiver and a low-power basic receiver, with a processing element that analyzes control channels to detect scheduled subframes and transitions between receiver states based on activity timers and channel conditions to select the appropriate receiver for optimal power usage and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the high-power high-performance receiver is used continuously, then the data decoding performance is improved, but the power consumption increases
Solution Approach 1:
The receiver operates dynamically by switching between two modes: high-power high-performance mode for scheduled subframes and low-power basic mode for unscheduled subframes. The processing element continuously monitors scheduling decisions and transitions the receiver between power states accordingly, optimizing both performance and power consumption based on actual communication needs
Solution Approach 2:
The system changes the operational parameters of the receiver by adjusting power consumption levels based on scheduling activity. When scheduled subframes are detected, the receiver transitions to high-power mode; when unscheduled, it transitions to low-power mode, thereby adapting performance characteristics to match actual communication requirements
2Use of energy by moving object
If the low-power basic receiver is used to save power, then the power consumption is reduced, but the decoding performance becomes insufficient in challenging interference environments
Solution Approach 1:
The receiver dynamically adapts its power state based on real-time scheduling information. The processing element monitors control channels and transitions the receiver between low-power and high-power states, ensuring that enhanced performance is activated only when needed due to scheduling decisions, thereby avoiding unnecessary power consumption during unscheduled periods
3Use of energy by moving object
If the receiver switches frequently between high-power and low-power modes, then the power savings are optimized, but the system complexity increases
Solution Approach 1:
The processing element autonomously monitors scheduling decisions from the base station and automatically controls receiver mode transitions without external intervention. This self-service mechanism simplifies system complexity by embedding the control logic within the existing processing architecture, eliminating the need for additional complex control systems
Data Source
AI summary
Mechanisms for operating a wireless user equipment device, to determine the state of data scheduling activity. Such activity state (and other information such as measurements of signal interference and/or channel condition) may be used to dynamically control the selection of a high-power high-performance receiver vs. a low-power basic receiver. A first mechanism involves transitioning to a high activity state and starting a timer upon each occurrence of scheduled subframe. A transition to the low activity state occurs whenever the timer expires. A second mechanism involves filtering a sequence of binary-valued indicators corresponding respectively to a sequence of time intervals. Each indicator indicates whether a subframe is scheduled during the corresponding time interval. The filter output is compared to a threshold to determine high/low activity state. The temporal width of the filter impulse response may be increased to support fast initial response without harming the accuracy of activity-state determination in the steady state.