A Traffic Adaptive Multi-channel MAC Protocol with Dynamic Slot Allocation for WSNs
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A Traffic Adaptive Multi-channel MAC Protocol with Dynamic Slot Allocation for WSNs
Abstract—A Traffic Adaptive Multi-channel MAC Protocol with Dynamic Slot Allocation for WSNs. Using low duty-cycle is the most common technique to extend the system lifetime in WSNs. However, it also implies limited throughput and long delay and the penalty is even higher under variable traffic patterns. In this paper, we present iQueue-MAC, ahybrid CSMA/TDMA MAC that adapts to variable/bursty traffic. With light load, iQueue-MAC uses a contention-based CSMA mechanism that provides low delay with scattered transmissions. When traffic increases, etected by a forming backlog in the sender, iQueue-MAC changes to a contention-free < Final Year Projects 2016 > TDMA > mechanism allocating transmission slots. Thus, iQueue-MAC mitigates packet buffering and reduces packet delay, combining the best of TDMA and CSMA.
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