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By integrating computational and physical elements through feedback loops, CPSs implement a wide range of safety-critical applications, from high-confidence medical systems to critical infrastructure control. Deployed systems must therefore provide highly dependable operation against unpredictable real-world dynamics. However, common CPS hardware-comprising battery-powered and severely resource-constrained...
The paper presents DA-MAC, a density aware access method for efficient forwarding in multi-hop dense wireless sensor networks. Its principle is to offer a configurable channel sensing phase during which nodes request transmission opportunity in a way that avoids collisions. The receiver can thus schedule transmissions so that nodes may return to sleep and only wake up at their scheduled transmission...
In energy-harvesting sensor networks, limited ambient energy from environment necessitates sensor nodes to operate at a low-duty-cycle, i.e., they communicate briefly and stay asleep most of time. Such low-duty-cycle operation leads to orders of magnitude longer communication delays in comparison with traditional always-active networks, imposing a new challenge in many time-sensitive sensor network...
In spite of the huge recent research effort in the field, energy efficiency remains one of the key issues in wireless communications. The area most affected by energy inefficiency is wireless sensor networks (WSN). In this paper we propose SESAM - a distributed MAC protocol, which, making use of application level information to predict future transmission instants between nodes, achieves an exceptional...
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