Improving vehicular delay-tolerant network performance with relay nodes

• Author(s): Soares, Vasco N. G. J. ; Farahmand, Farid ; Rodrigues, Joel J. P. C.
• Date: 2009
• Persistent ID: http://hdl.handle.net/10400.11/555
• Origin: Repositório Científico do Instituto Politécnico de Castelo Branco
• Subject(s): Vehicular delay-tolerant networks; Relay nodes; Delay-tolerant networks
• Document Type: Article
• Language: English

Description

“Copyright © [2009] IEEE. Reprinted from Next Generation Internet Network. NGI '09). ISBN:978-1-4244-4244-7. This material is posted here with permission of the IEEE. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [e-mail]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.” 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.