Improving vehicular delay-tolerant network performance with relay nodes

Authors:
Vasco N. G. J. Soares;Farid Farahmand;Joel J. P. C. Rodrigues
Affiliations:
Instituto de Telecomunicações, NetGNA Group, Covilhã, Portugal and Dept. of Informatics, Univ. of Beira Interior, Covilhã, Portugal and Superior Sch. of Techn., Polytechnic Ins ...;Department of Engineering Science, Sonoma State University, CA;Instituto de Telecomunicações, NetGNA Group, Covilhã, Portugal and Department of Informatics, University of Beira Interior, Covilhã, Portugal
Venue:
NGI'09 Proceedings of the 5th Euro-NGI conference on Next Generation Internet networks
Year:
2009

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Abstract

Vehicular Delay-Tolerant Networking (VDTN) is an extension of the Delay-Tolerant Network (DTN) architecture concept to transit networks. VDTN architecture handles non-real time applications, exploiting vehicles to enable connectivity under unreliable scenarios with unstable links and where an end-to-end path may not exist. Intuitively, the use of stationary store-and-forward devices (relay nodes) located at crossroads where vehicles meet them and should improve the message delivery probability. In this paper, we analyze the influence of the number of relay nodes, in urban scenarios with different numbers of vehicles. It was shown that relay nodes significantly improve the message delivery probability on studied DTN routing protocols.