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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, a hybrid CSMA/TDMA MAC that adapts to variable/bursty traffic. With light load, iQueue-MAC uses a contention-based CSMA mechanism that provides low delay...
Duty-cycling technique has been widely adopted in MAC protocols for wireless sensor networks to conserve energy. However, low duty-cycle also leads to limited throughput in most of existing solutions. In this paper, we propose iQueue-MAC to provide immediate yet energy-efficient throughput enhancement for dealing with burst or heavy traffic. Combined with CSMA/CA, iQueue-MAC makes use of queue length...
Dynamic resource management is generating growing interest as a way to simplify systems deployment, react to changing operational conditions and improve efficiency in using system resources. Buttazzo et al proposed the elastic task model (ETM) that dynamically moves the tasks instantiation period around a nominal value, increasing or decreasing the bandwidth that each task uses from the resource....
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