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Owing to the traffic pattern of wireless sensor networks (WSNs), cluster heads (CHs) around the sink node have larger relaying loads and consume their energy more quickly. This paper first analyzes the corona model. Based on analysis results, we find that nearly balanced energy consumption of WSNs can be achieved with the additional help of arranging different initial conditions. We then propose the...
In a vehicular delay tolerant network, the problem of scheduling the traffic from a roadside unit to passing-by vehicles is studied. A cost function is associated with a scheduled transmission. And if a delay bound is violated, a penalty cost is charged. The optimal stopping theory is applied to decide when the roadside unit should schedule its accumulated traffic to a passing-by vehicle such that...
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