Adaptive Receiver Mode Selection for DRX Power Optimization
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently managing power consumption during discontinuous reception (DRX) while maintaining reliable data transmission, as they often rely on predictive physical layer parameters rather than actual error rates, leading to suboptimal power usage and performance.
Innovation Solution
Adaptive receiver mode selection based on actual error rates and performance metrics, such as Cyclic Redundancy Check (CRC) failures, to adjust power consumption and reliability, allowing devices to optimize power usage without compromising performance by switching between different reception modes like online, offline, application processing, and antenna diversity schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If predictive physical layer parameters are used for receiver mode selection during DRX, then device complexity is reduced, but power consumption optimization and reception reliability are compromised
Solution Approach 1:
The patent implements feedback mechanisms where the receiver monitors actual reception performance metrics (CRC outcomes, error rates) from previous transmissions and uses this feedback to adaptively select receiver modes for subsequent transmissions. This closed-loop approach ensures reliable data reception while optimizing power consumption, resolving the contradiction between simplified operation and reception reliability.
Solution Approach 2:
The system dynamically adjusts receiver mode selection based on real-time channel conditions and actual reception performance rather than relying on static predictive parameters. The receiver can transition between different DRX modes (e.g., full DRX, partial DRX, continuous reception) adaptively, maintaining reliability while optimizing power efficiency according to actual system state.
2Reliability
If high reliability reception modes are used during DRX, then data reception reliability is improved, but power consumption increases
Solution Approach 1:
The receiver dynamically selects among multiple DRX modes (full DRX, partial DRX, continuous reception) based on actual channel conditions and reception performance. When channel conditions are good and reception is reliable, the system uses more power-efficient modes. When conditions deteriorate, it transitions to more reliable but power-consuming modes, thus adapting reliability and power consumption to actual needs rather than maintaining fixed high reliability settings.
Solution Approach 2:
The system changes key operational parameters including DRX cycle length, reception window timing, and receiver activation patterns based on monitored reception performance. By adjusting these parameters adaptively, the system optimizes the trade-off between power consumption and reception reliability, using higher reliability modes only when actually needed rather than continuously.
3Use of energy by moving object
If power consumption is minimized during DRX operation, then battery life is extended, but reception performance and error rates deteriorate
Solution Approach 1:
The system continuously monitors actual reception performance including CRC outcomes and error rates, and uses this feedback to adjust receiver mode selection. When performance degradation is detected in low-power modes, the system adapts by transitioning to more reliable reception modes, ensuring that power minimization does not compromise reception quality beyond acceptable thresholds.
Solution Approach 2:
The receiver performs preliminary monitoring of channel conditions and reception performance during initial DRX cycles to establish a baseline. Based on this preliminary assessment, it proactively selects appropriate receiver modes before actual data transmission occurs, preventing performance degradation rather than reacting to it, thus maintaining both power efficiency and reception quality.
Data Source
AI summary
Methods and apparatus for adaptively adjusting receiver operation during non-continuous (e.g., discontinuous) reception. In one exemplary embodiment, a user device such as a User Equipment (UE) adaptively adjusts its reception mode based on a determined actual error. The reception mode is selected so as to improve reception performance, while still minimizing overall power consumption.