Conference Paper

Improving Vehicular Delay-Tolerant Network Performance with Relay Nodes.

Inst. de Telecomun., NetGNA Group, Covilha, Portugal
Conference: Next Generation Internet Networks, 2009. NGI '09, Aviero, Portugal, July 1-3, 2009
Source: DBLP


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.

Download full-text


Available from: Joel Rodrigues,
  • Source
    • "The PRoPHET (probabilistic routing protocol using history of encounters and transitivity) [11] protocol transfers the message to a neighbor if it estimates that the neighbor has a higher likelihood of being able to deliver the message to the final destination based on past node encounter history. Similarly, MORA (multiobjective robotic assistance) [12] learns from the structure of the node movement patterns and uses this information to improve the message routing. "
    [Show abstract] [Hide abstract]
    ABSTRACT: Recently, the Delay Tolerant Networks (DTN) have been utilized in various operational communication paradigms. This includes the communication scenarios that are subject to disruption and disconnection as well as the scenarios with high delay and frequent partitioning, i.e., Vehicular Ad hoc Networks (VANETs). Due to the several characteristics match, new research paradigm named as Vehicular Delay Tolerant Networks (VDTNs) is introduced. Through relays and store- carry-forward mechanisms, messages in VDTNs can be delivered to the destination without an end-to-end connection for delay- tolerant applications. However, the choice of routing algorithms in VDTNs is still under study. The main objective of routing protocols in VDTNs is to maximize the probability of delivery at the destination while minimizing the end-to-end delay. Until now, many routing protocols have been proposed to meet requirements of varying applications. In this paper, we therefore provide a detailed study of recently proposed routing schemes for VDTNs. We also perform comparative analysis on the basis of unique criterion such as forwarding metrics with their implementations and so on. In addition, open challenges and future directions are provided to make room of interest for the research community.
    International Journal of Distributed Sensor Networks 11/2014; 2015. DOI:10.1155/2015/325027 · 0.67 Impact Factor
  • Source
    • "They allow mobile nodes to “ " save” " and pickup data. Relay nodes increase the number of contacts opportunities and therefore contribute to increase the bundles delivery ratio while decreasing their delivery delay, as discussed in [9] [10]. Mobile nodes (e.g. "

  • Source
    • "In [14], the author study the tradeoff of mobile networks enhanced by the deployment of relays, meshes and wired base station infrastructure. In [15] [16] [17], the authors study the impact of relay nodes on the performance of vehicular delay tolerant network and concluded that relay nodes gradually enhance the network performance by increasing the delivery rate and decreasing the average delay. III. "

Show more