A REVIEW ON ENERGY EFFICIENT PROTOCOL FOR HETEROGENEOUS WIRELESS SENSOR NETWORK

Wireless sensor networks had observed a enormous growth in recent years. As the sensor nodes used in WSN are battery powered, the consumption of battery decides the life time of network, as it can neither be recharged nor replaced. Therefore different protocols for heterogeneous WSN have been introduced to increase the life of network. In heterogeneous networks the nodes with the higher energy have more chances to become cluster head than the nodes have low energy. It simply means that selection of cluster head and giving tasks to them will increase energy efficiency. Various energy efficient protocols for Heterogeneous WSN have been developed in recent years and are discussed in this paper.