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A useful lifetime maximization for partial coverage conserve in wireless sensor networks. (Chinese. English summary) Zbl 1212.68016
Summary: A decision model of redundant node without location information for a heterogeneous wireless sensor network to prolong the wireless sensor network useful lifetime as well as to maintain sufficient sensing coverage at a specific application level is proposed. Based on the model, a useful lifetime maximization for partial coverage conserve in wireless sensor network (ULMPCC) protocol is proposed. The protocol allows for the closing all redundant nodes that have relatively less residual energy according to their residual energy states so that the least number of nodes are maintained as working nodes and a distributed collaborative scheduling of nodes is achieved. The residual energy-based selection strategy in ULMPCC effectively balances the network energy consumption, and maximizes the useful network lifetime. Simulation results show that ULMPCC guarantees the desired coverage QoS accurately and minimizes the number of active nodes. The error between the resulting coverage QoS and the desired coverage QoS is less than 1% when the desired coverage QoS is greater than 90%.
MSC:
68M12 Network protocols
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