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Multi-hop broadcast is a key technique to disseminate important information such as time-sensitive safety warning messages (WMs) in Vehicular Ad hoc Networks (VANETs). Due to the fact that the implementation of broadcast at the link layer uses unreliable transmissions (i.e., lack of positive ACKs), highly reliable, scalable, and fast multi-hop broadcast protocol is particularly difficult to design...
The advances in research on ad hoc networks, the availability of cheap radio interfaces (e.g. WiFi) and the increasing amount of electronic devices installed in vehicles have set the path for vehicular ad hoc networks. In the past few years, vehicular ad hoc network (VANET) research has addressed all layers, trying to optimize from the physical layer to the application layer to support the design...
IEEE 802.11p is an emerging standard intended to support wireless access in the vehicular environment and to deliver both safety and non-safety applications to vehicles on the roads. Despite the massive research effort related to the design of reliable and timely schemes for dissemination of safety messages, only a few works have investigated on-the-road delivery of non-safety data traffic, such as...
Epidemic or gossip-based algorithms have been proposed for data dissemination in vehicular networks. Due to the unfeasibility of deploying large size vehicular networks, the performance evaluation of these algorithms is usually based on simulations. However, most literature works present experimental results based on hyper-simplified and non-realistic mobility scenarios or do not adequately describe...
In this paper, we propose a timestamp series approach to defend against Sybil attack in a vehicular ad hoc network (VANET) based on roadside unit support. The proposed approach targets the initial deployment stage of VANET when basic roadside unit (RSU) support infrastructure is available and a small fraction of vehicles have network communication capability. Unlike previously proposed schemes that...
Vehicular networks are drawing a great attention from the research community and the automotive industry, where they are beneficial in providing ITS (Intelligent Transportation System) services as well as assisting the drivers on the road. In this context, vehicular networks are based on V2I (Vehicle to Infrastructure) and V2V (Vehicle to Vehicle) communications. The special characteristics of these...
Vehicular ad hoc networks (VANETs) allow communications over sequences of vehicles with radio devices. On such a network, there are many possible applications such as traffic jam warning, collision warning, parking lot reservations, camera picture feed etc. There have been quite a few results in the area seeking for a fast and reliable communication protocol due to their potential. VANETs, however,...
Most of the envisioned services over vehicular networks need to deliver information to all vehicles inside a certain region. Several such broadcasting protocols have been reported so far, but surprisingly only one of them addresses the issue of intermittent connectivity. In this paper, we present a broadcast protocol which is suitable for a wide range of vehicular scenarios and traffic conditions...
Vehicular adhoc networks are subclass of mobile adhoc network. Broadcast is a commonly used technique for communication. Different techniques are proposed for broadcast but they can't consider the importance of message except relevance based approach. Relevance based approach is the only scheme that forward relevant message for sharing and discard the surplus messages. The relevance based approach...
Broadcast mechanisms are widely used in self-organizing wireless networks as support for other network layer protocols, in this paper we investigate the broadcast techniques proposed in literature for vehicular ad hoc network (VANET). For the safety applications the broadcast protocol has to guaranty the performance and the reliability. In this paper, we propose an implementation the minimum connected...
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