Abstract
Focus on the character of energy harvesting sensor network in heterogeneous sensor network and some shortage in SEP algorithm, an improved algorithm for EH-SEP is been proposed. EH-SEP considers both residual energy and energy support of nodes in cluster-head election process .Improved algorithm achieves higher probability that the advanced nodes with high residual energy to be cluster-head, and lower probability that the traditional nodes with low residual energy to be cluster-head. During the state of data sensing, this paper adopted multiple hop data transmission to avoid long distance communication between the cluster head and base station, so it can improve the network energy utilization. The simulation result shows that: EH-SEP algorithm is not only suitable for energy harvesting of wireless sensor network, but also effectively prolong the work time in the network stable stage.
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