Wireless Node Sleep Level Selection for Battery Conservation
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Solution Overview
Problem
Power-limited wireless devices face challenges in conserving battery life due to disparate battery capacities and the need for continuous connectivity, which existing technologies do not adequately address.
Innovation Solution
Devices in a network collaborate to conserve power by selecting and broadcasting a 'sleep' level based on their battery capacity, with nodes having longer battery life taking on more processing and communication burdens to help those with limited power, and adjusting communication radii to reduce transmission power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If devices communicate wirelessly without external power connection, then mobility and freedom from wire clutter are improved, but battery life is depleted faster due to continuous power consumption
Solution Approach 1:
The patent implements periodic wake-up intervals where devices transition between sleep mode and active communication mode. Devices wake up at predetermined intervals to exchange data packets, then return to sleep mode. This periodic operation reduces average power consumption while maintaining wireless connectivity and mobility, directly addressing the contradiction between ease of operation and battery life duration.
2Duration of action of moving object
If devices with longer battery life bear more processing and communication burdens, then devices with limited battery life can conserve power, but network complexity increases due to collaborative power management
Solution Approach 1:
Each device autonomously determines its own power capabilities and communicates this information to the network. Devices self-manage their sleep wake-up intervals based on their battery status without requiring centralized control. This self-service approach enables collaborative power management where devices with longer battery life naturally承担 more communication burden, extending overall network operation time while avoiding complex centralized power management infrastructure.
3Use of energy by moving object
If communication radius is limited to save transmission power, then energy consumption is reduced, but network coverage and connectivity are reduced
Solution Approach 1:
The patent segments the network into multiple hops where data is transmitted through intermediate devices rather than requiring direct long-range communication. Each device communicates only with nearby neighbors within a limited radius, reducing individual transmission power requirements. The segmented multi-hop path achieves extended effective network coverage while each device operates at low power, resolving the contradiction between energy consumption and communication coverage.
Data Source
AI summary
A network node selects a “sleep” level based on its current or projected battery capacity. In an embodiment of the invention, sleep levels define the physical radius within which the wireless network node will engage other devices. The node in question communicates its selected sleep level to the rest of the network so that the other network nodes can communicate accordingly with the node.