Abstract
With the development of green energy technology, energy harvest (EH) technology is being applied to practical wireless sensor network (WSN). Therefore, the existing routing protocol is not suitable for this type of network with energy harvesting. A new routing protocol is designed to solve this problem. Firstly, the nodes in the monitoring area are divided into pairs by the method of pair coupling. These nodes switch between active and sleep states according to their remaining energy, so that they can take turns to charge. Secondly, a hybrid routing metric is introduced by considering the influence of residual energy and energy capture rate. Finally, based on the metric and neighborhood's information, the optimal path to base station is selected. Simulation results show that the energy efficiency of the proposed protocol is better than the existing routing protocol in EH-WSN.
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