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Named Data Networking (NDN) is a data-centric architecture designed for the future Internet. Existing works show that NDN brings significant performance improvement for typical content-centric applications, and can also fit the mobile environment well. However, directly applying NDN to Vehicular Ad hoc NETworks (VANETs) is confronted with great challenges due to the high mobility of vehicles. Most...
In this paper, we propose an efficient multi-hop broadcast routing algorithm based on Real-time Traffic Estimation in vehicular ad-hoc networks (VANETs) including a novel relay node selection scheme and an efficient adaptive rebroadcast wait delay strategy. Firstly, we take the overall traffic information into consideration to select the relay node, which is different with the traditional scheme only...
Safety message dissemination is a key mechanism for preventing intersection collisions. Normally, the dissemination is based on vehicular communications, of which the de-facto standard is Dedicated Short Range Communications (DSRC). However, due to DSRC high operation frequency, a signal suffers from serious attenuation when being propagated in Non Light-Of-Sight (NLOS) conditions. Previous works...
With the recent new paradigm for the future Internet named data networking (NDN), contents are searched by names and not by address, and any node storing a content can also act as a source of information. Such a paradigm appears to be of particular interest for vehicular ad hoc networks (VANETs), to extend internet services to vehicles and support new mobile applications. In VANETs, devices not only...
The vehicular Ad hoc network is new emerging technology to enhance traffic safety and comfort for automotive users. Most of the safety applications in this field need real time information with high reliability and in time delivery. In dense network a large number of vehicles nodes disseminate the messages to all accessible nodes with high frequency and control channels will be easily congested and...
The message propagation with low delay becomes a fundamental challenge in VANET. The vehicle Ad hoc networks are a very appealing solution for many safety applications like assistance driver, warning about collision of vehicle, warning of distance between vehicles, cooperation during driving and control for cruise cooperation. To operate these application the vehicles are fitted with those equipments...
Vehicular communications are important to ensure emergency messages are transmitted on time to prevent accidents. Therefore, in recent years, various standardization bodies and automobile companies have developed vehicular ad hoc network (VANET) to ensure public road safety. The current IEEE802.11p schemes utilize only traffic type to categorize priority levels. However, accidents are prone to occur...
Data dissemination in VANETs has recently attracted much attention. The important problem is the proper protocol performance in different network density. The most of existing protocol are struggling to perform well in sparse networks. In this paper, a new protocol was purposed for data dissemination in VANETs. This protocol is simple and does not struggle with problem in sparse network. A proper...
There has been a growing need to integrate communication technologies with transport infrastructure and vehicles. The proposed approach would spur an array of vehicular safety, traffic efficiency and infotainment applications. To address this, majority of the research has been focusing on IEEE 802.11p based vehicular communication. However, despite the efforts from standardization bodies and research...
We investigate the amount of radio spectrum re- quired for reliable vehicle-to-vehicle (V2V) communication for traffic safety. The basic feature of the traffic safety application is that it uses periodical broadcasts of status messages containing the location and velocity of transmitting vehicles. In our study we consider two dominant technologies for V2V communication, namely IEEE 802.11p and self-organizing...
Reliable, secure, private and fast communication in vehicular networks (VNets) is extremely challenging due to the highly mobile nature of these networks. Contact time between vehicles is very limited and topology is constantly changing. Trusted communication in VNets is of crucial importance because without trust, all efforts for minimizing the delay or maximizing the reliability could be voided...
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...
Networks of micro aerial vehicles (MAVs) equipped with various sensors are increasingly used for civil applications, such as monitoring, surveillance, and disaster management. In this article, we discuss the communication requirements raised by applications in MAV networks. We propose a novel system representation that can be used to specify different application demands. To this end, we extract key...
Road safety can be improved a lot with the help of Cooperative Collision Warning System, in which vehicles cooperate with each other for relaying safety messages to avoid accidents. Once a vehicle is in an abnormal status, which may lead to potential accidents, an emergency safety message will be generated and sent out to warn surrounding vehicles. In this paper, we address the routing problem of...
Wide deployment of communication devices on vehicles is on the horizon due to the development of intelligent transportation systems. Although these communication devices are originally designed for highway efficiency and safety applications, the mobile communication ability on vehicles also enables a lot of other emerging applications. In this paper we study an application scenario on utilizing vehicles...
I-CROSS is an intelligent system designed to help drivers to decide the time slot in which an intersection can be crossed without collisions. This service has been developed as a desktop application that can be executed in Android devices. The set of algorithms that determine the crossing order are fed with information about surrounding vehicles: actual and further GPS position, speed and an identification...
Direct radio-based vehicle-to-vehicle (V2V) communication can be used to prevent accidents and to provide accurate information on road state or surrounding vehicles intention. Both kinds of information can be used to enable drivers to react in time and avoid hazardous situations. While the IEEE 802.11p standard has specifically been adopted for vehicular communications, its Distributed Coordination...
With the increasing demand for traffic safety and efficiency and constant search for innovative solutions within the automotive market coupled with supporting initiatives from regulatory domains, the potential of Intelligent Transportation Systems (ITS) is immense. Basic vehicle and roadside infrastructure collaboration allows an increase in efficiency and safety and acts as the foundation for an...
Vehicular ad hoc networks (VANETs) drive new challenging research issues at different layers of the protocol pillar, from physical to application. Focusing on the medium access layer, one of the most promising and not yet fully explored option is the adoption of orthogonal frequency division multiple access (OFDMA). Besides guaranteeing high spectral efficiency and effective resource allocation, it...
Vehicular Ad-hoc Networks (VANETs) illustrate mobile P2P networks, which hold significant promise in improving traffic safety and alleviating traffic congestion. Reliable VANET-based services require dynamic resource management due to limited and often fluctuating network connectivity of VANETs that stem from the wireless and mobile nature of vehicle-to-vehicle (V2V) communications. To address these...
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