SIMULATION AND EVALUATION ABOUT MAC PROTOCOLS IN WIRELESS SENSOR NETWORK USING NS2
One of the major challenges of wireless sensor networks (WSN) is how to utilize efficiently battery energy resource to extend the lifetime of the entire network because of power constrained devices. Many MAC (Medium Access Control) protocols have been taken to decrease the energy consumption of sensor nodes such as IEEE 802.11, 802.15.4 MAC or sensor MAC (S-MAC) protocols. In this paper, we provide analyses performance of IEEE 802.11, 802.15.4 MAC and S-MAC protocols in terms of throughput, energy consumption and data packet delivery. Our simulation results show that S-MAC protocol with active and sleep cycle consumes energy less than about 10% and 15% compared to IEEE 802.15.4 and IEEE 802.11 MAC protocols respectively.
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