Adaptive Wake-On-Radio Threshold Adjustment for False Signal Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wake-On-Radio systems experience false wake-ups due to electromagnetic noise, leading to energy wastage and reduced battery life, as they are sensitive to false signal detections in noisy environments.
Innovation Solution
Adaptive adjustment of the wake-up threshold level for Wake-On-Radio receivers and transmit power levels based on counting false crossings and computing a false-to-true ratio, incrementally increasing or decreasing the threshold to balance between false awakenings and proper awakenings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wake-up threshold level is set low to detect weak signals, then signal detection sensitivity is improved, but false wake-ups due to electromagnetic noise increase
Solution Approach 1:
The patent implements dynamic threshold adjustment by continuously monitoring the electromagnetic environment and adapting the wake-up threshold level in real-time. The system transitions from a static threshold to a dynamic one that responds to changing noise conditions, thereby maintaining high signal detection sensitivity while reducing false wake-ups in varying electromagnetic environments.
Solution Approach 2:
The patent changes the threshold parameter based on environmental conditions. By monitoring electromagnetic noise levels and adjusting the wake-up threshold accordingly, the system optimizes the balance between detecting weak valid signals and rejecting noise-induced false wake-ups. This parameter adaptation allows the system to maintain optimal performance across different operational conditions.
2Reliability
If the wake-up threshold level is increased to reduce false wake-ups, then false wake-up rate is reduced, but signal detection sensitivity decreases
Solution Approach 1:
The patent employs feedback mechanisms where the system monitors wake-up events, distinguishes between true and false wake-ups, and uses this information to adjust the threshold level. The feedback loop continuously refines the threshold setting based on actual performance, ensuring high reliability while maintaining detection sensitivity through adaptive optimization.
Solution Approach 2:
The system dynamically adjusts the threshold level rather than using a fixed high threshold. This dynamic adaptation allows the system to maintain high reliability by raising the threshold when noise is high, while preserving signal detection sensitivity when conditions are favorable, thus avoiding the permanent sensitivity loss that would result from a consistently high threshold.
3Reliability
If the radio receiver continuously monitors signals to detect wake-up events, then wake-up detection reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring of the radio signal environment rather than continuous monitoring. The system wakes up periodically to check for signals and then returns to sleep mode, reducing energy consumption while maintaining adequate wake-up detection reliability. This periodic operation allows the system to balance energy savings with the need to detect wake-up events.
Solution Approach 2:
The system uses the minimal necessary monitoring capability to service its own wake-up detection needs without requiring continuous operation of power-intensive components. By keeping only the essential radio receiver active at low power and using intelligent threshold-based detection, the system achieves reliable wake-up detection with minimal energy expenditure.
Data Source
AI summary
A method for modifying a wake threshold for a wake-on-radio (WOR) receiver including: setting the wake threshold at a first level, counting false crossings of the wake threshold, and optionally modifying the wake threshold level based, at least in part, on a result of the counting. A receiver in a wake-on-radio (WOR) system including a wake-on-radio unit configured to implement the method for modifying a wake threshold. A method for setting a transmit power level of a transmitter for a wake-on-radio (WOR) system transmitter including: setting the level at a low level, receiving reports of false crossings of a wake threshold from a WOR receiver, and counting false crossings reported by the WOR receiver, and optionally modifying the transmit power level based, at least in part, on a result of the counting. A transmitter in a wake-on-radio (WOR) system including a transmit power adapter configured to implement the above method. Related apparatus and methods are also described.