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Routing messages over vehicular ad hoc networks (VANETs) is usually achieved through geographic routing protocols. In such networks, the vehicle dynamics causes rapid changes on the vehicle density and the communication links. In order to be efficient to route messages from a vehicle to another, we need to locate each node (its position), this is achieved by a location service. This study works on...
Vehicular Ad hoc Network (VANET) is a new technology that integrates the potentials of next generation wireless networks into vehicles. The design of routing protocols in VANETs is crucial in supporting the Intelligent Transportation Systems (ITS). Typical geographic routings only use local information to make routing decisions which may lead to local maximum and sparse connectivity problems. This...
Many routing algorithms for vehicular ad-hoc networks have relied on geographic forwarding as a means to reduce the paths' sensitivity to individual vehicle movements. In recent years, the basic forwarding strategies have been refined to create road-based paths, connecting successive road intersections selected on the basis of the connectivity between them. Revisiting this idea, we present two different...
Road traffic management is an ongoing challenge. Machine vision (image processing), RFID gates, aerial surveillance, and/or remote sensors technologies are usually used to reduce traffic management problems. However, their major drawbacks are installation difficulties, maintenance over the time, error handling, coverage and cost effectiveness. Thus, low-cost, flexible, easily maintainable and secure...
In VANETs, vehicle-to-vehicle communication is a challenge due to the fast topology changing, frequent disconnections, and highly variable traffic densities. This paper describes a Trajectory-based data Forwarding scheme with future Neighbor Prediction (TFNP) in autonomous driving vehicular environments. The most important characteristic of the environments is that the prediction for future position...
Currently, there are ongoing research and development efforts directed to data offloading. Data offloading allows load distribution by suitably allocating data communication traffic to other systems, such as wireless LANs or vehicle-to-vehicle communication systems. Especially, there is also ongoing research into traffic offloading using vehicle-to-vehicle communication. In traffic offloading using...
VANET is a wireless network that provides driving comfort and road safety. VANET cannot guarantee correct detection of dangerous road conditions, and communication between vehicles when the network is very high, which is dangerous to drive safely. We propose a new scenario using VANET for rescue purpose at time of emergency to overcome such dangerous accidents and communication problems in VANET,...
GNSS-assisted vehicle navigation services are nowadays very common in most of the developed countries. However, most of those services are either delivered through proprietary technologies, or fall short in flexibility because of the limited capability to couple road information with real-time traffic information. This paper presents the motivations and a brief summary of a vehicle navigation service...
In this paper, we propose a combination of GPSR (Greedy Perimeter Stateless Routing) and Hierarchical Location Service (HLS). They used to be combined in the original work with a direct method, i.e. GPSR takes care of routing packets and HLS is called to get destination position when the target node position is unknown or is not fresh enough. When a destination is quite far away from the sender, the...
Vehicular Ad-Hoc Network mainly involves Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I) communication. This communication accelerates in reducing number of accidents, avoiding traffic congestion, enhancing the transport facility with the aid of infotainment and entertainment application. One of the major challenges of VANET application is in routing the packet in efficient manner since...
With the increased dissemination and computing power of mobile devices, it is now possible to execute distributed artificial intelligence applications for various situations: intelligent routing using algorithms, planning, distributed optimization of traffic lights. Our solution provides a complex way of integrating intelligent traffic simulation with a distributed traffic management system that is...
One of the key aspects of any communication system is routing of packets. VANET is no exception and poses special challenges in routing techniques. Position based routing protocols are considered to be apt for vehicular networks [1] and to realize that a location service is being used. For a packet to be routed to a destination across the network, the destination's position is to be known in advance...
The number of vehicles has been growing compared to limited road capacity, leading to severe traffic congestion during rush hour. Urban planners are looking for solutions to reduce traffic congestion. Real time traffic information obtained from vehicles can help reduce congestion exploiting the wireless communications architecture recently established for safety and traffic control purposes. In this...
One of the essential usage of Intelligent Transportation Systems (ITS) applications is to provide road traffic information to vehicle drivers for road safety and efficient drive. For this usage, it is necessary to integrate geographical routing mechanisms in vehicular ad hoc network (VANET) into ITS applications. In this paper, we design and implement an ITS application which relies on IPv6 GeoNetworking;...
VANET (Vehicular Ad-hoc Network) that is used for vehicular-to-vehicular and vehicular-to-roadside communication is well known as one of the representative application of ad hoc networks. One of the representative mechanisms is Epidemic Routing that adopts the concept of Store-Carry-Forward. However, in Store-Carry-Forward mechanism, each node stores data packets in the buffer, and whenever the node...
The delivery of IP packets to a set of elements lying within a designated geographical area, also known as geocasting, is an important aspect in vehicular networks. Geocast messages can be used, for instance, to warn drivers about road conditions (e.g., weather hazards) and therefore prevent accidents. In order for geocasting to work on the Internet, IP addresses must be associated with geographical...
Various information delivery schemes based on store-carry-forward routing with extensions have been studied as part of efforts to support non-real-time communications in sparse or intermittent networks. However, communication service schemes that cover large areas based solely on store-carry-forward technology have previously been considered impractical because the delay time for message delivery...
Vehicular networks are formed by vehicles communicating in an ad hoc manner or through cellular and IEEE 802.11 base stations. Routing in vehicular networks is challenging due to highly dynamic network topologies. Previous research done has proposed the idea of Road-Based using Vehicular Traffic information (RBVT) routing. In RBVT, routes are sequences of road intersections, and geographical forwarding...
In this paper, we combined Geographic Information System (GIS), Global Positioning System (GPS), and wireless networks in mobile devices to develop a new Tour Arrangement System for users, and also amended the drawbacks of traditional navigation systems. Two major algorithms were proposed to generate an efficient tour path by computing real road distances in the system. Besides, we also implemented...
Routing remains one of the key challenges in vehicular networks due to their special properties such as the high mobility and the intermittent connectivity. Almost all the efficient routing solutions proposed for VANETs are based on geographic information provided by the navigation systems widely deployed in the new generation of vehicles. Typically, in these position-based protocols, a source node...
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