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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...
In the recent decade the VANET has been emerged as a prominent field for research and it receives considerable attention. VANET uses different specifications of the WLAN 802.11 family. It takes the basics of ad hoc network and the VANET creates a network with a collection of independent entities with the ability to communicate among themselves. The Adaption to the various 802.1 family causes a remarkable...
Vehicular Ad Hoc Network (VANET) is an evolving technology of today's world and is expected to be all pervasive in the near future. The vehicles in VANET possess mobility as well as computational processing power. The vehicles collaboratively form the ad-hoc network and are peers of each other. This paper discusses solving Traffic Congestion as an application of VANET. We have simulated the work of...
As researchers got interested in the vehicular ad hoc networks (VANET), several approaches and uses have been given. One of the most interesting is the network congestion control in an ad hoc environment. Our work consists of introducing a new approach in congestion control of Vehicular Ad Hoc Networks (VANET), using a new model. Our model is based on the hop by hop congestion control methods. This...
Mobile gateways are deployed to improve Internet services in Vehicular Ad-hoc Network (V aNet). In this vein, this paper argues the need for selecting an appropriate gateway for vehicles without access to the Internet according to certain criteria and based on a gateway discovery system. The proposed solution introduces a method of multiple-criteria decision analysis helping to find suitable gateways...
Video is the most recommended media for information dissemination in VANETs (Vehicular Adhoc Networks) as it gives clear and quick understanding of information to the drivers. The real time and on-demand video helps vehicles on road in various possible ways. An improper provider not only leads to frequent interruptions of communications, but the transmission of the invalid video fragments would also...
In vehicular ad hoc networks (VANETs) the network services and applications (e.g., safety messages, vehicle navigation data) require an exchange of vehicle and event location information. VANET is an important research field of wireless sensor networks providing different applications such as real time traffic information for on road vehicles and related authorities. The integrated model of VANET...
In this paper, we introduce a new strategy of using VANET nodes with visual sensors and wireless transceivers to build an instant camera barrier for a given mission period. Given a set of properly equipped VANET nodes whose drivers voluntarily join the protocol by exposing their future travel plans and use onboard equipment to transmit realtime video to the authority, we aim to maintain the barrier...
Wireless network solutions based on Vehicular Ad hoc Networks (VANET) are the main path for vehicle manufacturers and urban traffic management systems to find the bests in convenience, intelligence and safety of traveling and transportation. In the other hand, recent equipped vehicles with newest computers with powerful processors and huge storages are new resources for network service providers to...
In the last twenty years, vehicles have become equipped with various sensors and resources, making them capable to communicate, to share resources and to behave cooperatively. This gave rise to the concept of vehicular cloud (VC). Vehicular cloud can be described from the standpoint of applications and services offered by vehicles that belong to a Vehicular Ad hoc Network (VANET). Because of the limitation...
Most of the concerns of interest to mobile ad hoc networks (MANETs) are of interest in vehicular ad hoc networks (VANETs), but the details differ. Rather than moving at random, vehicles tend to move in an organized path. The intercommunication with roadside equipment can likewise be characterized fairly accurately. And finally, most vehicles are prohibited in their range of motion, for example by...
Cooperative downloading is an important measure for increasing the amount of data downloaded to the users of Vehicular Networking (VANET). However, data exchange causes frequent collision among cooperative vehicles and the client. To solve the problem, in this paper, we propose a transmission scheduling method. Firstly, the method builds a k-constraint routing tree according to the amount of linked...
Vehicular Ad hoc Network (VANET) is an upcoming wireless technology that enables communication between vehicles travelling at high speeds. The ability of VANETs to prevent fatal accidents by relaying data over the network has attracted the attention of both researchers and automobile manufacturers. Data dissemination is one aspect of VANETs used to improve the safety and performance of the vehicles...
In this paper, we present the statistical and the dynamical model of radio propagation channel at 5.9GHz band for vehicle to vehicle communication. The measurements were done in a real underground mine gallery.
The DSRC/WAVE system is standardized to disseminate safety critical information using IEEE 802.11p as a MAC protocol. Studies show that IEEE 802.11p does not address adverse effects of asymmetric radio link and mobility related problems in vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) communications. This paper presents a cross-layer (i.e. MAC and network) algorithm to address these...
This paper considers the fair access problem in vehicular ad hoc networks (VANETs) and develops an analytical model for analyzing the performance of an IEEE 802.11 DCF based fair channel access protocol in a non-saturated state. We derive the relationship between the transmission probability and the minimum contention window size of a vehicle, and the relationship between the velocity and the minimum...
In this work, we investigate upon the potential of considering the Intelligent Transportation Systems (ITS) for cellular traffic offloading as an alternative to Wi-Fi and femtoCells approaches. We propose an analytical study based on an optimization problem formulation called VOPP where the objective is to elect the maximum number of data flows that could be routed to the downloaders through the Vehicular...
Intelligent Transportation Systems have been instrumental in reshaping transportation towards safer roads, seamless logistics, and digital business-oriented services under the umbrella of smart city platforms. Broadcasting transmission is an essential operational technique that serves a broad range of applications which demand different restrictive QoS provisioning levels. Although broadcast communication...
In recent year many researcher and industries are working on VANET and trying to implement the concepts in real world. Many VANET systems are proposed and tested on simulation but very few inventors implemented it. Vehicular ad hoc networks (VANETs) are being developed to provide on-demand wireless communication infrastructure among vehicles and authorities. Such an infrastructure is expected to deliver...
VANET is used to create a mobile network that is based on mobile vehicles such as cars. It is a sub category of MANET. It allows every participating vehicle into a wireless node, allowing it approximately 100 to 300 meters of each other to connect and in turn, create a wide range network. In this network vehicles can join into one another so that a mobile internet is created. It is used for ITS (Intelligence...
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