International Journal for Technological Research in Engineering (IJTRE)
A WSN is a specialized wireless network made up of large number of sensor nodes and at least one base station. The energy constraint of WSNs makes energy saving and prolonging the network lifetime the two most important goals of various routing protocols. Therefore, it is necessary to design effective and energy aware protocol in order to increase the network life span. Clustering is a key technique used to extend the lifetime of a sensor network by reducing energy consumption. In this paper, the authors present a comparative study of various energy efficient clustering protocols. Primary issues which are considered in WSNs are energy consumption and network life time.