Study on an Improved Algorithm based on LEACH Protocol

As the routing protocols of Wireless Sensor Networks (WSNs), LEACH (low energy adaptive clustering hierarchy) has some shortcomings in algorithm, such as, the selection of cluster head is unreasonable and the node energy consumption is unbalanced, for these shortcomings, we propose an energy-saving algorithm LEACH-RA based on LEACH protocol. In LEACH-RA, all nodes are divided into fixed cluster, nodes in cluster adaptively select their cluster head according to the radius of their own clusters. We prove by NS2 simulation that the improved protocols effectively overcome the phenomenon of non-uniform of node energy consumption that is caused by the policy of randomly selecting cluster head. In this way, the life of network is extended.