Over the past decade, researchers have proposed several MAC layer protocols for the WSNs. The MAC protocols in
general will be application specific and hence no protocol has been accepted as standard. We have examined MAC protocols for WSNs with respect to various performance metrics such as energy conservation, latency, throughput and delivery ratio. We described some of the well known MAC schemes available in the literature. Next, we have compared SMAC and RI-MAC protocols under varying traffic density. Through NS2 simulations, it‘s shown that SMAC and RI-MAC
variations for delivery ratio and throughput are almost small at low density traffic loads. Result shows that variation in delay shown by RI-MAC is small under various traffic densities. Our simulation shows that RI-MAC outperforms SMAC by
considering various performance metrics such as energy consumption, latency and throughput.
Over the past decade, researchers have proposed several MAC layer protocols for the WSNs. The MAC protocols ingeneral will be application specific and hence no protocol has been accepted as standard. We have examined MAC protocols for WSNs with respect to various performance metrics such as energy conservation, latency, throughput and delivery ratio. We described some of the well known MAC schemes available in the literature. Next, we have compared SMAC and RI-MAC protocols under varying traffic density. Through NS2 simulations, it‘s shown that SMAC and RI-MACvariations for delivery ratio and throughput are almost small at low density traffic loads. Result shows that variation in delay shown by RI-MAC is small under various traffic densities. Our simulation shows that RI-MAC outperforms SMAC byconsidering various performance metrics such as energy consumption, latency and throughput.
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