Download Ad-hoc, Mobile, and Wireless Network: 12th International by Aggelos Kapoukakis, Christos Pappas (auth.), Jacek Cichoń, PDF

By Aggelos Kapoukakis, Christos Pappas (auth.), Jacek Cichoń, Maciej Gȩbala, Marek Klonowski (eds.)

This e-book constitutes the completely refereed complaints of the twelfth foreign convention on Ad-hoc, cellular, and instant Networks, ADHOC-NOW 2013, held in Wroclaw, Poland, in July 2013. The 27 revised complete papers provided have been conscientiously reviewed and chosen from fifty six submissions. The papers tackle such assorted issues as routing, rumor spreading, reliability, topology keep watch over, defense elements, and the influence of mobility. many of the papers include specific analytical effects whereas different ones are dedicated to fixing particular sensible difficulties of implementation and deployment.

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Additional resources for Ad-hoc, Mobile, and Wireless Network: 12th International Conference, ADHOC-NOW 2013, Wrocław, Poland, July 8-10, 2013. Proceedings

Sample text

On the other hand, at the same time that dense networks hardly face disconnections, their nodes suffer from rapid battery draining due to the high communication traffic, which in turn results in a shorter operational time of nodes. As the number of nodes grows, failed broadcasts due to disconnections become rarer, whereas unsuccessful broadcasts caused by the depletion of nodes’ batteries are more likely to happen. From this tradeoff, we derive an expected behaviour of network lifetime in mobile networks.

E. sight(i) − max sight(i) LBF(i) = i∈nodes(ON) msg(i) max msg(i) i∈nodes(ON) where nodes(ON) denotes the set of nodes in the network, sight(i) refers to the number of times node i was encountered by other nodes and msg(i) denotes the number of messages received by node i, during the lifespan of the trace. We use the average value of LBF(i) computed for all nodes i in the ON, to measure the exposure to congestion for each algorithm, on a given trace. We denote this value as ALBF. Performance. As can be observed in Figure 4(a), both Outer and LowerEps have a better average hit rate.

3. The Outer algorithm The second approach relies on the observation that, in Classic, messages having as destination nodes with low global ranking have to traverse nodes with higher ranking in the local community first, before being finally delivered. In order to reduce the occurrence of such situations, we introduce another adaptation of Classic, namely LowerEps, that exploits randomness. The behaviour of LowerEps is governed by a threshold , as follows: for each node encounter there is a probability that a message will be forwarded to the encountered node, regardless of its rank, and a 1 − probability that the algorithm will behave precisely as Classic.

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