A circular-density charging cluster division method in wireless rechargeable sensor networks

In wireless rechargeable sensor networks (WRSNs), considering the influence of factors such as random distribution of nodes, charging distance, charging position to base station distance on dividing charging clusters, we propose a circular-density charging cluster division method (CDCCDM) In this paper. The CDCCDM deploys charging clusters according to density of nodes. The density is measured by the number of adjacent nodes. Divide charging clusters from nodes with high node density, and charging cluster structure is circular. Rotate and translate charging clusters, find a charging cluster with the largest number of nodes in the clusters as the optimal charging cluster to reduce the number of charging clusters and the complexity of a mobile car (MC) charging scheduling. Give charging position of the charging cluster. Simulation analysis shows that the CDCCDM is superior to an optimal clustering method based on distance of charging location to the base station and charging distance (OCM-DCLBSCD) according to indexes of network dead node numbers, the MC moving distance, the MC cumulative consumption time, the MC cumulative energy consumption and energy utilization rate.