An Improved Clustering Routing Protocol for Wireless Sensor Networks

This paper presents clustering routing protocol,namely improved-leach based on the characteristic of limited energy for wireless sensor networks to prolong the lifetime of networks.It takes nodes' residual energy into consideration during the process of cluster heads being elected.The constraint of distance threshold is used to optimize cluster scheme.Furthermore,it also sets up 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.