International Publisher for Advanced Scientific Journals (IPASJ)
Wireless Sensor Network (WSN) comprises of hundreds or thousands of sensor nodes to sense the environment collect data and send these data to a central location known as Base Station (BS) or sink. Sensor networks are very useful in many application such as military applications, environmental condition detection, whether prediction, measuring temperature, sound, wave, humidity and so on. Each sensor node in sensor networks operates on battery. In many scenarios, it is very difficult to recharge or replace battery of sensor nodes. So routing protocols for wireless sensor networks should be as energy efficient as possible.