Abstract

Abstract—Vehicular Ad-Hoc Networks (VANETs) have a highly dynamic network topology due to the constant and rapid movement of vehicles. Therefore, communica-tion in VANETs is mostly affected with disruptions and delays as a result of network disconnections and partitions. Moreover, increasing the geographical coverage area for data dissemination while keeping the data-delivery delay low is a challenge. This paper first surveys the routing techniques in Delay Tolerant Networks (DTNs), and also the usage of DTN communication in VANETs. Then, the paper proposes a combined architecture of Vehicle-to-Vehicle (V2V) communication, DTN communication, and Vehicle-to-Infrastructure (V2I) communication as a large-scale data dissemination system for vehicular networks. We argue that the combined architecture enables data dissemination in a larger geographical area compared to a V2V communication model, and efficiently deals with disconnectivity and network partitions that mostly occurs in sparse networks. Keywords-VANET; DTN; V2V Communication; V2I Com-munication. I.