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As an emerging technology, Vehicular ad hoc networks (VANETs) aim to increase safety and comfort of driving in highways and urban streets. The conventional measures taken have a positive effect on the decline of casualties and injuries incurred by the accidents. But the number of incidents in the traffic still remains stable. VANETs intend to overcome this problem by providing additional information...
Channel congestion is one of the major challenges for IEEE 802.11p-based vehicular ad hoc networks. To tackle the challenge, several algorithms have been proposed and some of them are being considered for standardization. Situations could arise where vehicles with different algorithms operate in the same network. Our previous work has investigated the performance of a mixed-algorithm vehicular network...
The need to improve road traffic management is evident worldwide. Growing congestions on the roads along with a gradual increase of pollution and concern for improving traffic safety have prompted to explore the potential of the Intelligent Transportation Systems through numerous research projects funded by public entities and/or the automotive industry. However, due to various reasons, including...
Traffic congestion is one of the serious problems in all the mega-cities. It is evolving with rapid growth of population. To overcome the challenge, this study proposes an intelligent system that can optimize the road traffic in real-time without having a huge infrastructural change by using vehicular ad-hoc network (VANET), and the swarm intelligence of natural environmental agent called ant colony...
In this paper a fast review and comparative study of the adhoc routing protocols used in VANET will be presented. The research filed in Vehicular adhoc network (VANET) is developing very fast. An extensive variety of utilizations has been served under various situation (Highway, urban, and Cities). Many protocols have been adopted to serve different topology and scenarios, these protocols faced various...
Increased traffic and hence congestion is a major problem in cities or urban areas. To mitigate this problem of congestion a real-time traffic density estimation model is essential. This research proposes one such model for estimating the traffic congestion level with the help of Vehicular Ad-hoc Network (VANET) and Cloud Computing. In this work, a novel architecture and algorithm has been proposed...
Routing in Vehicular Ad Hoc Networks (VANETs) is still a challenging issue due to intrinsic characteristics — especially limited resources and high mobility- of these mobile networks. The AODV routing protocol is one of the applied protocols in such networks since it can adapts to network continuous topology changes. Nevertheless, its performance may suffer from high frequency VANET dynamics as they...
Vehicular communication technology leverages communication equipment and infrastructure to improve road safety and provide useful services for road user. In order to operate properly, many of these services need continuous data gathering to assess road situations accurately. In this paper, we analyse the impact of communication technology penetration rate and the proportion of application-equipped...
Intelligent Transport System (ITS) shall be able to incorporate transparently and seamlessly a large number of different and heterogeneous traffic system, while providing communication access to vehicles with various Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communication for the development of a safety commuting service. Building a route forecasting system is a complex task, mainly...
Vehicle to Vehicle communication is comes under ehicular ad-hoc network (VANET). VANET uses the concept of mobile ad-hoc network. VANET gives flexibility to communicate between high speeds vehicles and create a network. VANET classification is done in three different category such as Vehicle to Infrastructure (V2I), Vehicle to Vehicle (V2V) and Hybrid network which is a combination of V2V and V2I...
Vehicular Ad hoc Networks (VANETs) is an infrastructure less network with dynamic nodes along with Road Side Units (RSU). Due to high vehicle density, randomness, scalability, mobility, data dissemination is a troublesome task. So, a realistic approach has been carried out in avoiding fatal accidents and bottleneck traffic. In upcoming technology, it can permit vehicles to configure network communication...
In Vehicular Ad Hoc Networks(VANET), vehicles communicate among each other and with infrastructure points by broadcasting safety and non-safety messages in the network. Due to wireless communication, security and privacy are very important issues to avoid threat in the network. Group based vehicle to vehicle (V2V) communication scheme is proposed here which prevents vehicle from threat. To achieve...
The Vehicular Ad Hoc Networks (VANET), which are essentially the subset of Mobile Ad Hoc Networks (MANET) have been focused in the recent years mainly for the research and development of the Intelligent Transport Systems having the ability for both self-management and also self-organization, making them reliable as a highly mobile network system Also, the disconnection of such high mobile nodes will...
Communication without failure is the fruitful result of advanced technology which can be achieved by enabling the design and implementation of several networks. Vehicular Ad-hoc Networks (VANETs) demands reliable communication. To facilitate the reliable communication, in this work, we present an Agent based Dynamic Clustering for Hybrid VANET (ADCHV). Dynamic clustering is the technique in which,...
Nowadays, wireless communication technologies have high influence on our daily lives. The vehicular ad hoc networks (VANETs) is now evolving quickly and attract attention from road operators, car manufacturers and governments. We unveil a fine traffic flow optimization method with VANETs. On the macroscopic level, our model identifies road segment profiles. On the microscopic level, vehicles send...
Reliably broadcasting safety information to neighboring vehicles is a big challenge in vehicular ad-hoc networks (VANETs), due to the dynamic network topology and the unreliable wireless channels. In this paper we present two decentralized cooperative schemes to enhance broadcast reliability by exploiting the advantage of message piggybacking. The key idea is to let each vehicle optimally piggyback...
Taking advantage of cooperation, vehicle network navigation can be used for applications where conventional navigation techniques usually are not competent: collision avoidance or mitigation, lane change management or emergency breaking assistance systems. This paper presents a low-complexity belief propagation (BP) algorithm, named Gaussian sum cubature belief propagation (GSCBP), for vehicle network...
This paper investigates the performance of Vehicle-to-Infrastructure (V2I) services over Vehicular Networks (VANETs) that are assisted by Road Side Units (RSU). More specifically, an analytical study of RSU dimensioning and a respective module is designed and developed in a simulated VANET environment. Two V2I application scenarios (e.g. car crash, spot weather) are considered in order to evaluate...
Nowadays, according to the mobility and high speed of vehicles, network connectivity is became less in the Vehicle Ad Hoc Networks (VANET). So, end-to-end connectivity is almost impossible. Then, intermittent connectivity and message losing will be occurred. Store-Carry-Forward method is used in the Vehicular Delay Tolerant Networks (VDTN) to reduce message losing. Storing the message for a long time...
The usage of Road Side Units (RSUs) acting as a buffer point in VANETs alleviates the intermittent vehicle-to-vehicle (V2V) connectivity problem. However, due to the vehicle mobility and the short RSU-transmission-range, a vehicle dwells short time inside an RSU. Nevertheless, quick response from the RSU server, helps a driver to make a quick decision while driving. Network coding is known to be efficient...
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