Hybrid Wireless Sensor Network Routing Management
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Solution Overview
Problem
Wireless sensor networks face challenges in extending the operational lifetime due to high power consumption, particularly in managing radio operations and packet routing, as battery-powered devices frequently wake up to listen for data communications, leading to inefficient power management.
Innovation Solution
Implementing a hybrid framework where externally powered devices handle primary packet routing responsibilities, allowing internally powered devices to sleep longer and assume routing duties only when necessary, thereby reducing wake-up times and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If internally-powered devices frequently wake up to listen for data communications and perform packet routing, then network reliability is improved, but power consumption increases and operational lifetime decreases
Solution Approach 1:
The patent introduces externally-powered devices as intermediary nodes that assume packet routing responsibilities. These intermediary devices handle the power-intensive routing functions, allowing internally-powered sensor nodes to remain in sleep mode longer while maintaining network connectivity and reliability through the externally-powered routing infrastructure.
Solution Approach 2:
The patent segments the network functions by separating packet routing responsibilities from sensor monitoring functions. Externally-powered devices are designated specifically for routing, while internally-powered devices focus on sensing. This functional segmentation allows each device type to optimize its operation for its specific role, extending overall network lifetime.
2Adaptability or versatility
If all devices perform packet routing duties, then network adaptability is improved, but device complexity increases and power consumption rises
Solution Approach 1:
The patent creates a hybrid network where externally-powered devices serve multiple functions including packet routing, data collection, and network management. This multi-functionality in externally-powered nodes provides network adaptability without requiring all internally-powered sensor nodes to perform complex routing functions, thereby reducing their complexity.
3Extent of automation
If internally-powered devices assume primary routing responsibilities, then network autonomy is improved, but operational lifetime decreases due to high power consumption
Solution Approach 1:
The patent implements self-service through automated router configuration where externally-powered devices automatically configure themselves as routers and dynamically manage packet routing based on network conditions. This automation maintains network autonomy while eliminating the need for internally-powered sensor nodes to perform power-intensive routing operations.
Data Source
AI summary
Various embodiments provide an apparatus and method for managing packet routing through internally-powered network devices in wireless sensor networks. An example embodiment includes a hybrid network having an externally-powered node and an internally-powered node, the method includes configuring a role that the internally-powered node will take during an operations phase of the hybrid network, the role including whether the internally-powered node will act as a router or a non-router; demoting the internally-powered node to a non-router role if the internally-powered node is not needed for routing; and promoting the internally-powered node to a router role if the internally-powered node is needed for routing.