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Understanding vehicle mobility is essential for devising successful protocols for vehicular communications. Vehicles move at varying speeds on roads whose complexities range from plain highway lanes to urban boulevards with intersections/circles, traffic lights and various points of interest on them. This mobility pattern combined with vehicle density fluctuations depending on location and time makes...
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...
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,...
Data aggregation for VANETs is considered a vital building block for many applications due to its bandwidth saving potential. In this paper, we propose a novel context aware data aggregation technique for VANETs. The data aggregation is done by the cluster head based on the context i.e. vehicle speed and density to reduces the required bandwidth for periodic data dissemination. The proposed technique...
Intended for providing the security in the VANETS (Vehicular Ad hoc Network) scenario, the covert storage channel has been implemented through which data transmitted between the sender and the receiver. Covert channels are the logical link which be used for the communication purpose and hide the secure data from the intruders. This paper refers to the Establishment of bit selective mode covert storage...
Platooning is an emergent vehicular application aiming at increasing road safety, efficiency and driving comfort. The cooperation between the vehicles in a platoon is achieved by the frequent exchange of periodic broadcast Cooperative Awareness Messages (CAMs) also known as beacons. CAM triggering conditions are drafted in the standard ETSI EN 302 637-2 and are based on the dynamics of an originating...
Vehicular Adhoc Networks (VANETs) have been attracted a lot of research recent years. Although VANETs are deployed in reality offering several services, the current architecture has been facing many difficulties in deployment and management because of poor connectivity, less scalability, less flexibility and less intelligence. We propose a new VANET architecture called FSDN which combines two emergent...
Vehicular Ad Hoc Network (VANET) is considered promising for ubiquitous communication on roadways and one-hop broadcast plays a leading basic role in VANET. Thus, there is a strong need of high reliability related to packet transmission and reception especially when VANET is used for life-safety applications. Though IEEE 802.11p has been defined as an international standard for VANET, IEEE 802.11p...
Recently, involving wireless communication technologies in deployment of new vehicular networks becomes more attracting to the research community and vehicle manufacturers. It is beneficial in providing intelligent transportation system as well as new assistant services to drivers. However, the limitation of resources in mobile vehicles is a significant technical challenge in the deployment of new...
Currently, vehicular ad-hoc network (VANET) is one of the most successful mobile ad-hoc network (MANET) commercially. Vehicles use two kind of messages named Safety Alert Message in order to advertise their change of status. One of them is periodic safety message (PSM), the other is event driven safety message (EDS) which occurs as soon as the vehicles' status change abnormally. (i.e. change in speed...
Vehicular Ad hoc Networks are a long-term solution contributing significantly towards Intelligent Transport Systems in providing access to critical life-safety applications and services. Although Vehicular Ad hoc Networks are attracting greater commercial interest, current research has not adequately captured the real-world constraints in Vehicular Ad hoc Network handover techniques. This is necessary...
Many applications of inter-vehicle communication networks (IVC) rely on multi-hop dissemination of information using vehicle-to-vehicle communication. An example are traffic information systems, which aim to provide up-to-date information about traffic jams to drivers. Due to the large amount of information and wide dissemination ranges, naïve protocols fail to scale to multi-hop dissemination. Therefore,...
A large amount of file transfer systems in use today are designed to operate in wired networks. In the context of vehicular ad-hoc networks, these systems may behave improperly, due to the inherent characteristics of wireless networks and mobility of vehicles. This work proposes and implements a model for transferring files using basic client-server architecture, with focus on its operation in vehicular...
Vehicular Ad-hoc Network (VANET) is a type of mobile communication in which topology changes dynamically due to high mobility of vehicles. Vehicles use two types of messages to update their status and to communicate with other vehicles. First is Periodic Safety Message (PSM) which gives us information about position, speed etc. and second is Event Driven Safety Message (ESM) which occurs when emergency...
After several years of development, Vehicular ad hoc Networks (VANETs) are now an emerging Telematics environment. Applications have been studied in many fields, including fleet management, vehicle tracking, and driver warming systems. This study proposes a seamless fleet transmission management control mechanism for VANETs. The proposed fleet management process, defined the fleet area by dynamic...
This paper reviews a range of problems in the road transport field and the potential role of vehicular ad-hoc network systems (VANETs) in helping to solve them. In reality, the communications requirements vary widely from one application to the next, in terms of range, latency, and connectivity together with vehicle and roadside hardware. Based on the nature of the wireless channel, this presents...
As vehicular networks (a.k.a. VANETs) continue to mature, the benefits they promise come closer to reality. For this to happen, both security and privacy must be provided. Particularly in dense urban environments, novel methods of distributing the often changing identity (pseudonyms or PNs) of the vehicles is necessary in order to ensure vehicles have sufficient PNs. In this paper, we examine three...
The security in vehicular ad hoc networks (VANETs) is receiving a significant amount of attention in the field of wireless mobile networking because VANETs are vulnerable to malicious attacks. A number of secure authentication schemes based on asymmetric cryptography have been proposed to prevent such attacks. However, these schemes are not suitable for highly dynamic environments like VANETs, because...
In WAVE applications, the safety information of neighboring vehicles must be collected as quickly and efficiently as possible. Safety applications broadcast their safety information periodically, but the delivery of the broadcast messages in IEEE 802.11p is unreliable. As the control channel has to share the Sync Interval (SI) with the service channels, access to the control channel by the safety...
This paper presents an abiding geocast protocol for the vehicular ad hoc network (VANET) so that commercial advertisement can be disseminated to as many vehicles as possible with a smaller number of message forwardings. To evaluate the performance of our protocol, we have implemented the prototype on the Madwifi driver for Linux and performed experimental simulations in various environments.
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