Wireless Paging Sleep Cycles for Low-Power Message Reception
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Solution Overview
Problem
Conventional wireless devices consume excessive power due to frequent wake-ups for monitoring paging messages, which limits their operational duration, especially in applications with size constraints and varying responsiveness requirements.
Innovation Solution
Implementing an extended sleep cycle with adjustable ON and OFF durations in wireless devices, synchronized with communication networks, allowing for reduced monitoring frequency and power conservation, while ensuring timely message delivery through message queuing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional wireless device wakes up at each paging occasion to monitor for paging messages, then the device maintains responsiveness to incoming data, but the device consumes excessive power and drains its power supply at a faster rate
Solution Approach 1:
The patent implements extended sleep cycles where the wireless device alternates between monitoring periods (waking up to check paging occasions) and non-monitoring periods (staying in sleep mode). This periodic action reduces the frequency of wake-ups while still maintaining acceptable responsiveness, thereby significantly reducing power consumption compared to conventional continuous monitoring at every paging occasion
Solution Approach 2:
The patent introduces dynamic adjustability of sleep cycle parameters (ON duration and OFF duration) based on application requirements and operational conditions. The device can adapt its monitoring frequency dynamically - more frequent monitoring when responsiveness is critical, and less frequent monitoring when power conservation is prioritized, allowing optimization of the trade-off between reliability and energy consumption
2Volume of moving object
If a compact wireless device is used with size constraints, then the device cannot accommodate a large battery, but the device still needs to sustain reasonable operation periods
Solution Approach 1:
By implementing extended sleep cycles with long OFF durations where the device stays in sleep mode and does not monitor paging occasions, the patent dramatically reduces average power consumption. This allows compact devices with small batteries to achieve extended operational durations (years instead of months) despite the limited battery capacity, resolving the contradiction between small size and long operational life
3Adaptability or versatility
If different wireless applications have varying requirements for responsiveness and power consumption, then a single one-size-fits-all paging cycle is not suitable across different applications
Solution Approach 1:
The patent enables dynamic configuration of sleep cycle parameters (ON duration, OFF duration) that can be adjusted based on specific application requirements. Different applications can be configured with appropriate monitoring frequencies - for example, pet tracking devices can use longer sleep cycles for extended battery life, while emergency alert devices can use shorter sleep cycles for higher responsiveness. This dynamic adaptability allows a single device design to serve multiple applications with varying requirements without significantly increasing complexity
Data Source
AI summary
Extended sleep in a wireless device. In an embodiment, synchronized parameters, used by a wireless device to define an extended-sleep cycle, are stored at a system. Based on the synchronized parameters, the system determines a transmission time at which to transmit a message over the wireless communication network such that the message will be received by the wireless device during a portion of the extended-sleep cycle during which the wireless device is monitoring paging occasions. The message is then queued until it is transmitted at the transmission time.