International Journal of Recent Development in Engineering and Technology (IJRDET)
Wireless sensor networks have emerged as an important new area in wireless technology for twenty first century. It is used in environment monitoring, agriculture and many hazardous places wireless sensor network use battery operated computation and sensing devices. The nodes sensing all the time and transfer the sensing information to the base station and drop down battery power quickly. So the main problem is to minimize the energy consumption and make the life of wireless sensor longer. The S-MAC protocol is the solution.