Wake-Up Message Protocol Switching for Interference-Resistant Activation
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Solution Overview
Problem
Existing wireless device wake-up systems are incompatible with on-demand applications, leading to inefficiencies and increased power consumption due to synchronous, asynchronous, and polling/advertising methods, and complex systems add cost and power consumption with high-frequency clock operations.
Innovation Solution
A wireless device determines location coordinates along a route and uses a first protocol for wake messages, switching to a second protocol based on interference resistance and proximity, adjusting the activation point dynamically using a statistical model to optimize power consumption and interference resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If synchronous wake-up systems are used, then devices can wake-up according to an onboard timer, but they are incompatible with on-demand applications and require waiting during off periods
Solution Approach 1:
The system dynamically switches between synchronous and asynchronous wake-up modes based on operational context. During active periods, synchronous timing is used for power efficiency. When on-demand operations are detected, the system transitions to asynchronous mode with sensor-triggered wake-up, allowing immediate response without waiting for timer cycles.
2Adaptability or versatility
If asynchronous wake-up systems are used, then devices can transition according to onboard triggers, but time is required to emerge from sleep mode to wake mode
Solution Approach 1:
The system performs preliminary configuration of wake-up parameters and sensor thresholds while in sleep mode. When a trigger event occurs, the device is pre-configured to transition rapidly, reducing the effective wake-up time. Critical parameters are pre-loaded into registers, and sensor interrupt handlers are pre-registered, enabling faster response compared to full initialization from scratch.
3Reliability
If polling/advertising type systems wake frequently to issue messages, then the probability of connection improves, but more power is consumed
Solution Approach 1:
The system implements periodic wake-up cycles with adaptive timing. Instead of continuous polling, the device wakes at predetermined intervals to transmit advertisement messages. The interval duration is dynamically adjusted based on connection history and power availability, balancing connection probability with power consumption by extending intervals when connections are stable and shortening them when connection attempts fail.
4Measurement precision
If complex data recovery stages with high-frequency clock operations are used, then detection precision improves, but cost and power consumption increase
Solution Approach 1:
The system dynamically changes operational parameters including clock frequency and data recovery complexity based on signal conditions. When signals are strong and clear, simpler recovery algorithms with lower clock frequencies are used. When signals are weak or noisy, the system increases clock frequency and activates more complex recovery stages, optimizing the balance between detection precision and power consumption for each operational context.
Data Source
AI summary
A method can include, by operation of controller circuits, determining a higher interference resistance (HIR) location coordinate (PIN) for a route between the wireless device and a target location. A wake message can be transmitted according to a first wireless protocol. In response to receiving an awake message according to a second wireless protocol, a location and quality value for the awake message can be stored. In response to being within a predetermined proximity of the HIR activation PIN without having received the awake message, a HIR wake message can be transmitted. In response to acquiring stored location and quality values, an HIR activation PIN can be selectively changed. A first wireless protocol can consume less power or be less resistant to interference than a second wireless protocol. Corresponding devices and systems are also disclosed.