Abstract: “With the evolution of wireless sensor network, the interest in their application have increased considerably. The architecture of the system differs with the application requirement and characteristics. Now days there are number of applications in which hierarchal based networks is highly in demand and key concept of such network is clustering. Some of the most well known hierarchical routing protocols are LEACH, TEEN, APTEEN and HEED. These different conventional protocols have diverse strategies to select their cluster head but still have some limitations. Based on the limitations of these conventional models, a new approach has been proposed on the basis of ranks and weights assignment. This approach will consider not only residual energy but also node’s degree and distance of nodes with base station. The node which will have higher weight will be chosen as a cluster head. The objective of this approach is to have balance distribution of clusters, enhance lifetime and better efficie”

Keywords: Wireless sensor network, clustering, data aggregation, cluster head, weight.