LEACH protocol randomly selects cluster head nodes in a cyclic manner. It\nmay cause network to be unstable, if the low energy node is elected as the\ncluster head. If the size of cluster is too large or too small, it will affect the\nsurvival time of the network. To address this issue, an improved solution was\nproposed. Firstly, the scheme considered the average and standard deviation\nof the nodesâ?? residual energy and the distance between the node and the base\nstation, then considered the distance between the node and the cluster head\nand the energy of the cluster head to optimize the cluster head selection and\nclustering. The performance analysis results showed this scheme could reduce\npremature deaths of the cluster heads and too high energy consumption of\nsome clusters. Thus, the proposed algorithm could prompt the stability and\nprolong the lifetime of the network.
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