Energy-efficient clustering routing protocol based on weight

This paper presents an improved clustering routing protocol, ILEACH which based on the characteristic of limited energy of wireless sensor networks to prolong the lifetime of the whole networks. It takes nodes´ residual energy into consideration during the process of cluster heads being elected. The constraint threshold of distance is used to optimize cluster scheme. Furthermore, it also constructs the routing tree based on cluster heads´ weight. We simulate and analyze LEACH and improved-leach in NS2. The results show that the performance of ILEACH is better than LEACH in both network lifetime and cluster head election.