Energy Optimization Algorithm of Wireless Sensor Networks based on LEACH-B

Against to the problem that energy consumption unevenly in the wireless sensor network (WSN), we propose an optimized protocol LEACH-B on the basis of LEACH. In this paper, clustering and cluster head election method is improved. Firstly, the great convergence and global optimization capability of BIRCH algorithn can reasonably divide the entire network area into a plurality of sub-regions. Then, electing the cluster head taking the residual energy factor into account, in the sub-region. The experiment result shows that compared with the classic routing protocol LEACH, the LEACH-B can effectively balance the network load and improve the utilization of energy, so as to extend the network life cycle.