Wireless Routing Clustering Protocol Based on Improved LEACH Algorithm

Abstract

Aiming at the problem of short life cycle and uneven energy consumption of low power adaptive clustering hierarchical protocol (LEACH), an improved LEACH algorithm is proposed. In the selection of cluster head nodes, the optimal cluster head proportion is calculated by considering the problem of residual energy and current position, and the SEP algorithm is used to calculate the different cluster head election probability for the advanced nodes and ordinary nodes, so that the distribution of the cluster heads is more uniform. At the same time, in the data transmission phase, data communication is performed using a hybrid routing method. That is, the distance from the node to the cluster head and the base station is compared. When the node is close to the base station, the node directly communicates with the base station. Otherwise, it communicates with the base station through the cluster head. It reduces the number of clustering and saves network energy consumption. Simulation experiments show that the improved LEACH algorithm makes the distribution of dead nodes more discrete, the entire network energy consumption more balanced and extends the life cycle of the wireless sensor network.