摘要

In wireless sensor networks, there is usually a sink which gathers data from the battery-powered sensor nodes. As sensor nodes around the sink consume their energy faster than the other nodes, several sinks have to be deployed to increase the network lifetime. Anycast is a mechanism that the source node sends the data to the nearest sink node. The paper study and design an anycast service for deploying several sinks in wireless sensor network. A novel anycast tree-based is proposed approach to minimize the path cost. Here the nodes form a tree with a sink node as the root, while the height of the tree integrates multiple metrics to calculate path cost based on diverse selection criteria. This paper discusses and analyzes the model deeply. The experimental data proves its validity and efficiency. Computer simulation shows that the proposed scheme reduces and balances the energy consumption among the nodes effectively, so it significantly extends the network lifetime compared to the existing schemes.

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