Ad-Hoc, Mobile, and Wireless Networks: Third International by Errol L. Lloyd, Rui Liu, S. S. Ravi (auth.), Ioanis PDF

By Errol L. Lloyd, Rui Liu, S. S. Ravi (auth.), Ioanis Nikolaidis, Michel Barbeau, Evangelos Kranakis (eds.)

ISBN-10: 3540225439

ISBN-13: 9783540225430

ISBN-10: 3540286349

ISBN-13: 9783540286349

This ebook constitutes the refereed complaints of the 3rd foreign convention on Ad-Hoc Networks and instant, ADHOC-NOW 2004, held in Vancouver, Canada in July 2004.

The 22 revised complete papers and eight revised brief papers offered have been conscientiously reviewed and chosen from greater than one hundred fifty submissions. All present features of ad-hoc networking, sensor networks, cellular, instant, and cooperating verbal exchange structures are addressed together with, multicast, broadcast, functionality, QoS, routing protocols, scalability, protection, hybrid networks, self-organization, auto-configuration, power intake, peer-to-peer structures, and MAC protocols.

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Additional info for Ad-Hoc, Mobile, and Wireless Networks: Third International Conference, ADHOC-NOW 2004, Vancouver, Canada, July 22-24, 2004. Proceedings

Sample text

124 Multicast Versus Broadcast in a MANET 23 When scaling the packet delay factor by 100 ms, BCAST achieves similar performance to FLOOD for one or two multicast sender, but with significantly increased PDR for 5 and 10 multicast sender. For 1 multicast sender, the PDR is slightly below the PDR in FLOOD, in particular for high mobility scenarios. This is due to the fact that BCAST has less redundancy, dynamically selecting only a subset of nodes to re-broadcast a packet. 5 for 10 and 50 multicast receivers, respectively.

F. Gomez-Skarmeta the higher the mobility of the nodes, the best the performance of the adaptive approach. For 10 sources the proposed approach is almost obtaining the same packet delivery ratio than the proactive scheme and much better than the hybrid and reactive ones. For 15 sources the proposed approach outperforms all the others. The reason is that with 15 sources the reactive and hybrid approaches require too much overhead due to the need for sources to reactively discover the gateways. The proactive approach also starts working worse because its high control packet load does not leave enough resources to carry all the data packets generated by the sources.

We propose an adaptive gateway discovery approach based on the dynamic tuning of the scope of the gateway advertisements. Just by monitoring data packets, gateways will adaptively select the time to live of their advertisement that best suits the current network conditions. So, even when the network conditions change, the overall network overhead is reduced while still maintaining a good connectivity. In the author’s opinion the main contributions of this paper are (i) an analytical study of the overhead of different gateway advertisement approaches showing the need for an adaptive scheme, and (ii) an adaptive gateway discovery approach for hybrid networks which is shown through simulation to outperform existing alternatives.

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Ad-Hoc, Mobile, and Wireless Networks: Third International Conference, ADHOC-NOW 2004, Vancouver, Canada, July 22-24, 2004. Proceedings by Errol L. Lloyd, Rui Liu, S. S. Ravi (auth.), Ioanis Nikolaidis, Michel Barbeau, Evangelos Kranakis (eds.)


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