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In wireless sensor networks the issue of preserving energy requires utmost attention. One primary way of conserving energy is judicious deployment of sensor nodes within the network area so that the energy flow remains balanced throughout the network and prevents the problem of occurrence of energy holes. Firstly, we have analyzed network lifetime, found node density as the parameter which has significant...
Recent advances in systems of networked sensors have set the stage for smart environments which will have wide-ranging applications from intelligent wildlife monitoring to social applications such as health and elderly care service provisioning. Perhaps the most natural problem in sensor systems is the ??efficient?? propagation of a sensed local event. In order to address this problem, the notion...
Delay tolerant networks are a type of wireless mobile networks that do not guarantee the existence of a path between a source and a destination at any time. In such a network, one of the critical issues is to reliably deliver data with a low latency. Naive forwarding approaches, such as flooding and its derivatives, make the routing cost (here defined as the number of copies duplicated for a message)...
As sensor networks are deployed over various terrains, the complexity of their topology continues to grow. Voids in networks often cause existing geographic routing algorithms to fail. In this paper, we propose a novel geographic routing algorithm called ldquoGreedy Forwarding with VIrtual Position (ViP)rdquo. We introduce virtual position as the middle position of all direct neighbors of a node....
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