How to set up a local cluster with optimal member nodes in wireless sensor networks

Wireless sensor networks are networks for collecting environment information in specific area using sensor nodes with low power. The process of sensor networks is a multiphase process compromised of sensing environment, transmitting the sensing data to neighbor nodes, collecting it from nodes for aggregating, and processing it for a request. As sensor networks have a feature which can have many similar data between adjacent nodes, they use a clustering method which sets up a cluster heads, collects many similar data from member nodes in a local cluster and sends the collected data to sink by cluster heads. A clustering method of sensor networks needs to equally distribute member nodes to a cluster head because of affecting the number of member nodes in a local cluster to the energy consumption of a cluster head, a local cluster and sensor network. So, this paper proposes how to set up a local cluster with optimal member nodes in wireless sensor networks.