Abstract: LEACH is an important hierarchical routing protocol. It changes the cluster head periodically with the intention of saving energy. But it has bug in the clustering policy that brings on inappropriate cluster structure. CCRP introduces a clustering policy based on candidate and a multi-frames data transferring policy based on forecast to resolve the problem.The simulation result proves that CCRP is effective.

Key words: Wireless sensor network, Routing protocol, Hierarchical routing protocol, Energy efficient