关键词：无线传感器网络;聚类;路由协议
摘 要：ECRPW (energy-efficient clustering routing protocol based on weight) routing protocol is presented to avoid the characteristic of limited energy for wireless sensor 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 ECRPW in NS2.The results show that the performance of ECRPW is better than LEACH.