Multi-Stage Wake Detection for Low-Power Wireless Devices
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Solution Overview
Problem
Conventional techniques for managing power consumption modes in wireless devices are inefficient and require additional hardware resources, leading to increased power consumption even in sleep mode.
Innovation Solution
Implementing a multi-stage wake detection mechanism in wireless devices that dynamically switches between low-power and additional wake stages based on operational conditions, using front-end logic to manage power domains efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional hardware resources are used to manage transitions between power modes, then reliability of mode transitions is improved, but power consumption increases even in sleep mode
Solution Approach 1:
The patent segments the wake detection functionality into multiple independent stages: a low-power first stage using envelope detection, and a second stage using frequency discrimination. This segmentation allows the system to use only the minimal necessary hardware resources for basic wake detection, reducing sleep mode power consumption while maintaining reliable mode transitions through the staged approach.
Solution Approach 2:
The patent changes the operational parameters of the detection stages by using envelope detection in the first stage which requires minimal hardware resources, and reserving frequency discrimination for the second stage. This parameter change in detection methodology allows reliable wake signal detection with reduced hardware overhead, thereby lowering power consumption during sleep mode while maintaining transition reliability.
2Reliability
If conventional wake detection techniques are used, then wake signal detection capability is maintained, but power consumption efficiency deteriorates
Solution Approach 1:
The patent divides wake detection into segmented stages where the first stage uses envelope detection with minimal hardware to perform basic wake signal detection. This segmentation maintains detection capability while improving power efficiency by avoiding the use of more resource-intensive frequency discrimination hardware during normal operation.
Solution Approach 2:
The patent employs a low-cost, low-power envelope detection mechanism in the first stage that consumes minimal energy. This approach uses simpler, less resource-intensive hardware that is sufficient for basic wake detection, thereby maintaining detection capability while significantly improving power consumption efficiency compared to conventional techniques.
3Adaptability or versatility
If additional wake stage is used dynamically, then adaptability to operational conditions is improved, but device complexity increases
Solution Approach 1:
The patent segments the wake detection system into distinct stages with clearly defined functions. The first stage handles basic envelope detection, while the second stage handles frequency discrimination. This segmentation provides adaptability to different operational conditions while managing complexity through modular, staged architecture rather than a monolithic complex system.
Solution Approach 2:
The patent implements dynamic operation by enabling the system to switch between different detection stages based on operational conditions. The controller can dynamically activate the second stage when needed while keeping the first stage as the default low-power operation, providing adaptability without requiring the entire system to operate at maximum complexity continuously.
Data Source
AI summary
Systems, methods, and devices provide low-power wakeup operations in wireless environments. Methods include receiving a signal at a wireless device, the signal comprising a data packet compatible with a wireless communication protocol, performing, using one or more processing elements, a first wake detection operation at a first wake stage of the wireless device, and determining, based on a designated pattern and performance parameters, if a second wake detection operation should be performed at a second wake stage of the wireless device. Methods also include determining, using one or more processing elements, if a valid wake code has been received based on a designated wake code associated with the data packet.