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Power-aware routing, have been studied to avoid energy-scarce sensors and achieve network lifetime improvement but recently, it was noticed that sink mobility can also be used to improve network lifetime by avoiding excessive transmission overhead at nodes that are close to the location that would be occupied by a static sink. Also in many situations, a static sink may be unfeasible because of deployment...
By omitting sensors which have incorrect action in a wireless sensor network, network is reorganized again and it causes the consumption of energy and may also cause that some parts of the network go out of the coverage. The functionality of the network will be lowered when a node is thrown out from the network, so designing a sensor network with low consumption of energy is one of the prominent trends...
In this paper, we present two new ldquospatiotemporal multicastrdquo protocols for supporting applications which require spatiotemporal coordination in sensor networks. The spatiotemporal character of mobicast relates to the obligation to deliver a message to all the nodes that will be present at time t in some geographic zone Z, where both the location and shape of the delivery zone are a function...
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