Adaptive Wake-Up Receiver for Wireless Device Energy Management
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Solution Overview
Problem
Existing wake-up receiver technologies face challenges in providing full service coverage in macro cells due to limited sensitivity, making them unsuitable for widespread deployment in wireless communication networks.
Innovation Solution
A method is introduced where a wireless device uses a wake-up receiver only when the signal strength meets a certain threshold, adapting its operation to ensure energy efficiency while maintaining coverage, by switching between continuous and discontinuous monitoring modes based on signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wake-up receiver is used continuously to monitor downlink signals, then coverage reliability is improved, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by making the wake-up receiver operation adaptive rather than static. The receiver switches between continuous monitoring mode (when signal strength is strong) and discontinuous monitoring mode (when signal strength is weak), allowing the system to optimize between reliability and energy consumption based on real-time channel conditions.
Solution Approach 2:
The patent changes the operational parameters of the wake-up receiver based on measured signal strength. When signal strength exceeds a threshold, the receiver operates continuously for maximum reliability. When signal strength falls below the threshold, the receiver switches to discontinuous monitoring to reduce energy consumption, thus adapting system behavior to current conditions.
2Use of energy by moving object
If wake-up receiver operates in discontinuous monitoring mode to save energy, then energy efficiency is improved, but coverage reliability deteriorates
Solution Approach 1:
The system dynamically adjusts the monitoring mode parameter based on signal strength measurements. When signal strength is sufficient (above threshold), continuous monitoring ensures high reliability. When signal strength is insufficient (below threshold), discontinuous monitoring conserves energy while maintaining acceptable reliability through adaptive decision-making.
Solution Approach 2:
The patent implements feedback mechanisms where the wake-up receiver continuously monitors signal strength and uses this information to adjust its operational mode. This closed-loop control ensures that the system responds to changing channel conditions, switching between monitoring modes to balance energy efficiency and coverage reliability.
3Device complexity
If wake-up receiver is deployed in macro cells with limited sensitivity, then device complexity is reduced, but coverage area is limited
Solution Approach 1:
The patent addresses the limited coverage area of low-sensitivity wake-up receivers by implementing dynamic operational modes. In areas with strong signal coverage, the receiver operates continuously to ensure reliability. In areas with weak signal coverage, the system switches to discontinuous monitoring, allowing the same simple receiver to effectively serve diverse coverage scenarios without requiring high sensitivity hardware.
Data Source
AI summary
A method by a first node (101), for handling a receiver at a wireless device (130). The first node (101) and the wireless device (130) operate in a wireless communications network (100). The first node (101) determines (502) whether or not a condition is met. The condition is a measurement of a signal received by the wireless device (130) being above or below a first threshold. The first node (101) initiates (503), based on a result of the determining (502), a procedure to wake-up the wireless device (130). The first node (101) initiates the procedure by applying at least one of: a downlink signal to be used, and a receiver to receive the downlink signal to wake-up the wireless device (130) at the wireless device (130).