Seek Digital Library
With the evolution of wireless sensor network, the interest in their application has increased considerably. The architecture of the system differs with the application requirement and characteristics. Now-a-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.