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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...
This paper investigates scheduling and control co-deign of vehicle platoons subject to packet dropouts and communication capacity limitation. Each vehicle is modeled as a switching system with multiple modes according to the packet dropouts status and network access status. A scheduling control co-design algorithm is established based on switching system theory. The co-design algorithm is derived...
In hybrid vehicular ad hoc networks (VANETs), content data can be downloaded either from 3G/4G cellular networks or from roadside units (RSUs) of VANETs. When downloading via cellular networks, the delay is low but the cost is expensive. While, downloading via VANETs, the cost is nearly free. However, due to the unique characteristics of VANETs, such as frequent disruptions, high speed mobility and...
Multiple communication modes can be used to communicate between vehicle-to-vehicle (V2V) & vehicle-to-infrastructure (V2I) in cooperative vehicle infrastructure system, such as wireless fidelity (Wi-Fi), dedicated short range communication (DSRC), Third-Generation (3G) and so on. However, it is difficult to choose the most appropriate communication mode because of the complexity of application...
The recent advancements in electronics and computer networks, as well as the clear need for interoperability and connectivity makes communication technologies and algorithms crucial for the success of Intelligent Transportation Systems (ITS) applications. This survey paper provides a classification of communication technologies concerning their use in ITS and an assessment of their effectiveness....
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...
Security mechanisms recommended by VANET standardization bodies are not sufficient to stop authorized vehicles from sending bogus or fake messages that in the worst cases could put people's life at risk. There are efforts in evaluating the behaviour of the vehicles in VANETs, based on reputation mechanisms. However, the most of them compromise the privacy, the messages are linkable and no anonymous...
In the near future, beacon dissemination base stations will be deployed in shopping mall, supermarkets, stadiums, museums, and theatres to send advertisements offering services and products to the customers with mobile devices. Today, an example of this concept of business model is the Apple's iBeacon. Borrowing this concept from mobile computing, we envision a new opportunity for business modeling...
Vehicle to Vehicle (V2V) communication systems enable vehicles to communicate with each other and use the shared information to make safety related decisions. However, the safety improvement of the current V2V systems only benefits V2V-enabled objects in the V2V network. The Pedestrian Automatic Emergency Braking System (PAEB) can utilize onboard sensors to detect pedestrians and make safety related...
V2V transmission of Safety Warning Message (SWM) can provide warning before emergency occurs to avoid accident, and remind surrounding vehicles to avoid potential danger. There are two main problems that will affect the transmission performance of SWM, namely the high local flow and low efficiency caused by high probability of sub-health vehicles (SHV) and traditional single channel and flooding transmission...
Information interaction system plays an important role in establishing a real-time and high-efficient traffic management platform in Intelligent Transportation System (ITS) applications. However, the present transmission technology still exists some defects in satisfying with the real-time performance of users data demand in Vehicle-to-Vehicle (V2V) communication. In order to solve this problem, this...
Intelligent Transportation System (ITS) applications for integral and cooperative vehicle safety as well as some Advanced Driver Assistance Systems (ADASs) benefit from precise determination of relative positions between dynamic traffic objects. With conventional Global Navigation Satellite System (GNSS) measurements, e.g. using Global Positioning System (GPS), the required accuracy cannot be achieved...
In Vehicular Ad Hoc Networks (VANETs), efficient use of the control channel affects both safety applications that use the control channel and other applications that use the service channels. Its efficiency deteriorates due the collisions on accessing to the control channel or due to the merging collisions which happen when fast moving vehicles use the same allocated channels. In this paper, we propose...
Vehicular ad-hoc networks (VANETs) have gained a lot of attention from both academic and industry due to its immense potential in revolutionizing the vehicular communication industry. VANETs facilitate vehicles to share safety and non-safety information through messages. Safety information includes road accidents, natural hazards, road blocks etc. Non-safety information includes tolling information,...
Characterizing the channel for vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications in the 5 GHz frequency band is of great interest within the increasingly growing field of intelligent transportation systems. In this study, we determine the Doppler shift effect in a simulation scenario with a V2I path loss model and various V2V channel models. The existence of both Doppler...
Several Intelligent Transportation Systems (ITS) rely on localization to enable services ranging from comfort to safety applications. Following this same idea, the use of Dedicated Short Range Communications (DSRC) devices based on the IEEE 802.11p standard, and the Vehicular Ad Hoc Networks (VANETs) paradigm, have resulted in the deployment of several protocols, services and applications that need...
In this paper, we present two new problems and a theoretical framework that can be used to route information in heterogeneous communication networks. These problems are the cardinality-constrained and interval-constrained paths problems and they consist of finding paths in a network such that cardinality constraints on the number of nodes belonging to different sets of labels are satisfied. We propose...
Vehicular Ad-Hoc Network, or VANET is a computerized system which provides communications for a group of vehicles between each other and with equipments installed on the road side (RSU) or with camera mounted on the traffic light poles or, even with sophisticated sensors. In this paper we propose a new model of cluster formation based on beacon delay for real scenarios in VANET. Our approach is fully...
To provide a more practical analysis for performance of the VANETs (vehicular ad hoc networks), we propose a novel analysis model based on clustering. Because of the low-density deployment of the vehicles which equipped with VANET, and the effect of vehicular mobility, in the real traffic scenario, moving vehicles are divided into clusters. The proposed analysis model takes full account of the vehicles...
Platooning is an important mechanism to increase the capacity of roads and the efficiency of driving. Vehicular ad hoc networks (VANETs) can enhance the performance of platoons. In this paper, a novel mechanism that selects a leader vehicle autonomously for a platoon based on relative mobility information of vehicles is proposed for overcoming the restriction on vehicles and for facilitating platoons...
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