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An emerging technology to enhance smart transportation is Vehicular Ad hoc Network (VANET) where vehicles are treated as nodes. It communicates with fixed road landed infrastructure (RSU) and other vehicles via onboard unit (OBU). Efficient and reliable information dissemination among the vehicles in sparse environment is still challenging. Also finding a shortest path from source to destination is...
Vehicular ad hoc network (VANET) is an emerging network technology with the goal of providing public safety, traffic coordination and infotainment for the comfort of passengers in moving vehicles. However, it faces the challenge of not providing the expected quality of service (QoS) when streaming videos online. This challenge emanate from the variable topology infrastructure caused by intrinsic high...
As a special yet important part of vehicular ad hoc networks (VANETs), Bus-VANETs have attracted much research attention in recent years. Most of existing studies focused on developing routing protocols in Bus-VANETs based on the predictable bus route. In this work, we embark a study on information services in Bus-VANETs, where bus information is provided via the hybrid of infrastructure-to-vehicle...
Vehicular networks are increasingly gaining popularity among researchers for their potential to enable diverse applications associated with road traffic safety, infotainment and road transportation management. In this paper we present a QoS-based routing protocol named VanetQoS which purpose is to accommodate real-time and multimedia applications with specific quality of service (QoS) requirements...
Greedy routing in VANETs requires some geographical informations, such as the source location and the destination location. The first one could be obtained using some localization devices like GPS receiver. However, the second one is provided by a location service. This later has a high overhead especially if it is implemented over V2V (vehicle to vehicle) communications. Many location services are...
Intelligent Transportation Systems (ITS) constitute a stimulating research subject for the global research community, as it is arguably considered to play a dominant role in the development of efficient, secure and safe transportation systems. ITS enable rapidly emerging information technologies and novel mobile applications and services in vehicles and transportation infrastructures. The development...
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...
This paper proposes an extension of IPv6 neighbor discovery (ND) for rapid network prefix and service discovery in vehicular networks. It is assumed that a vehicle as a moving network (MN) or a road-side unit (RSU) as a fixed network (FN) has an external network interface, and hosts in an MN periodically announce their services to their local DNS Server called recursive DNS server (RDNSS) of the MN...
Numerous efforts are currently under progress to enhance the safety and efficiency of vehicular traffic through intelligent transportation systems. In addition, the growing demand for access to data and information from human users on the go has created the need for advanced vehicle-to-vehicle and vehicle to roadside communication systems capable of high data rates and amenable to high degrees of...
Routing is considered as one of the most important processes in computer networks especially ad hoc networks. Vehicular ad hoc networks require to use efficient protocols for routing in order to exchange data between network nodes for various reasons including lack of infrastructure in some circumstances, high mobility of nodes, network dynamics and lack of trusted nodes. Because of the need for security...
Vehicular Ad hoc Network (VANET) is a wireless ad hoc network that provides communications among vehicles with on-board units (OBUs) and nearby roadside units (RSUs). VANETs are general-purpose distributed wireless networks interconnected without the need of any centralized infrastructure. VANETs can be used for many potential applications. The simulation of VANETs requires two different components:...
The class of flooding-based DTN routing protocols that leverage (transitive) encounter probabilities have been shown to perform well in selected simulations and scenarios, however they are especially sensitive to heterogeneous mobility models in which some nodes' mobility pattern is on a significantly different timescale than others. In particular, military and disaster response scenarios can exhibit...
VANET (Vehicular Ad hoc Network) is a special kind of ad hoc network in which each vehicle is regarded as a communication unit, which has attracted lots of attention in recent years. Vehicle's movement is restricted by road and environment in VANET, while traditional random mobility model and way-point mobility model can't reflect the realistic vehicle traces. How to evaluate wireless routing protocol...
Routing protocols in Vehicular Ad hoc Network (VANET) have drawn lots of attention in recent years, most existing research efforts focus on designing IP-based protocols. In this paper, we present a new routing protocol for VANET based on Named Data Network (NDN). We optimize the routing path by using a new distance metric in the protocol, avoiding the shortcomings of hop-count based metric. Moreover,...
Vehicular Ad Hoc Networks (VANETs) are going to be an important communication infrastructure in our moving life. The design of routing protocols in VANETs is a significant and necessary issue for supporting VANET-based applications. However, due to high mobility, frequent link disconnection, and uneven distribution of vehicles, it becomes quite challenging to establish a robust route for delivering...
In internet of vehicles (IOV), on-board Ad hoc network between vehicles is established randomly and freely based on dedicated short range communication technology, enabling the vehicles beyond visual range of drivers and signal transmission range of on-board communication equipment to establish communication connection for transmission and sharing of information and data through single-hop and multi-hop...
It does not seem easy to generate reliable routes in Vehicular Ad-hoc Networks (VANETs) because of frequent link failures caused by vehicle's mobility. In this regard, we analyze the characteristics of topology-based routing protocols in order to assess the feasibility of each protocol for vehicular environments. We plan to design an efficient routing protocol for VANETs in order to generate reliable...
Vehicular Ad Hoc Network(VANET) plays an important and indispensable part in the Intelligent Transport System(ITS). The QoS required by data transmission becomes higher due to the moving characteristic of nodes and the increasing of business types in VANET. Hence, the technology of Multi-Radio Multi-Channel has been applied in VANET in order to provide a more efficient network performance. On account...
Recently, the Intelligent Transport System (ITS) has undergone significant advances aiming at improving safety in the transportation system. One such progress has led to the introduction of Vehicular Ad hoc Network (VANET). This paper analyses the performance of the Nakagami radio propagation model, which is a realistic model to simulate real life scenarios. Furthermore, this paper examines how VANETs...
VANETs is used to provide the network environment for intelligent transportation system in which the node speed is very high and topology changes frequently. So that route acquisition and nodes communications in the network are the tedious task. We can't apply the routing protocols of MANETs on VANETs directly. In this paper we describe an approach that is based on firefly algorithm (an implementation...
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