International Journal of Engineering, Science and Innovative Technology (IJESIT)
Energy consumption in wireless sensor networks is one of the main challenges for researchers. Many researchers have been done for extending the overall network lifetime by minimizing the power consumption of sensor nodes. Most of the work is done over the MAC layer of network in which different kinds of MAC protocol used by sensor networks. Most commonly used standard is 802.11.Sensor networks consist of small, inexpensive, resource constrained devices that communicate wirelessly in a multi-hop network.