HyDi: a hybrid data dissemination protocol for highway scenarios in vehicular ad hoc networks

Authors:
Guilherme Maia;Andre L.L. Aquino;Aline Viana;Azzedine Boukerche;Antonio A.F. Loureiro
Affiliations:
Federal University of Minas Gerais, Belo Horizonte, Brazil;Federal University of Alagoas, Maceió, Brazil;INRIA, Saclay, France;University of Ottawa, Ottawa, Canada;Federal University of Minas Gerais, Belo Horizonte, Brazil
Venue:
Proceedings of the second ACM international symposium on Design and analysis of intelligent vehicular networks and applications
Year:
2012

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Abstract

In this paper we tackle the problem of data dissemination under both well-connected and intermittent connected vehicular ad hoc networks. For such a purpose, we propose HyDi, a data dissemination protocol suited for highway scenarios. HyDi can seamless operate under well-connected networks by applying broadcast suppression techniques in order to avoid contention at the link layer, and also at intermittent connected networks by applying store-carry-forward techniques, thus delivering messages even when there is no end-to-end path. By means of simulation using the recently defined IEEE 802.11p standard, we compare HyDi against the only two existing solutions in the literature --- DV-CAST and SRD --- and we show that HyDi has an overhead as good as DV-CAST, outperforms both protocols when considering the average delay under heavy traffic scenarios, decreases the average number of hops to deliver messages and can deliver data to almost all nodes in a given region of interest.