International Journal of Recent Development in Engineering and Technology (IJRDET)
In wireless sensor networks, lifetime enhancement is a huge challenging task because the sensor nodes are equipped with limited low power battery. The battery replacement or recharge is not possible as nodes are deployed in inaccessible polluted environment. When the battery power of a sensor node is exhausted, then the sensor node dies. When sufficient number of sensor nodes dies, the whole network does not perform its desired task. Thus the network lifetime enhancement is most important task of a wireless sensor network.