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Securing Location Aware Services Over VANET Using Geographical Secure Path Routing *
"... Abstract — We propose to secure location aware services over vehicular ad-hoc networks (VANET) with our geographical secure path routing protocol (GSPR). GSPR is an infrastructure free geographic routing protocol, which is resilient to disruptions caused by malicious or faulty nodes. Geographic loca ..."
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Abstract — We propose to secure location aware services over vehicular ad-hoc networks (VANET) with our geographical secure path routing protocol (GSPR). GSPR is an infrastructure free geographic routing protocol, which is resilient to disruptions caused by malicious or faulty nodes. Geographic locations of anonymous nodes are authenticated in order to provide location authentication and location privacy simultaneously. Our protocol also authenticates the routing paths taken by individual messages. This paper presents the design of the GSPR secure geographic routing protocol. The overhead of location authentication is investigated under various scenarios through network simulation. Results show that although the presence of malicious nodes increases the routing path length, a data delivery rate of larger than 80 % is sustained even if 40 % of the nodes are malicious. I.
TrafficModeler: A Graphical Tool for Programming Microscopic Traffic Simulators through High-level Abstractions
"... In this paper, we present TrafficModeler, an opensource, graphical tool for the rapid high-level modeling and generation of vehicular traffic. TrafficModeler supports a variety of traffic definition models representing a wide range of traffic patterns. A set of traffic generation algorithms are impl ..."
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In this paper, we present TrafficModeler, an opensource, graphical tool for the rapid high-level modeling and generation of vehicular traffic. TrafficModeler supports a variety of traffic definition models representing a wide range of traffic patterns. A set of traffic generation algorithms are implemented to convert high-level models to output compatible with SUMO, a popular open-source microscopic traffic simulator. TrafficModeler drastically reduces the time and effort required to generate traffic for SUMO. Furthermore, it can be easily extended to support other traffic simulators and to incorporate new types of traffic. 1.
A Vehicle Route Management Solution Enabled by Wireless Vehicular Networks”, in Mobile Networking for Vehicular Environments Workshop of INFOCOM
, 2008
"... Abstract — Traffic Congestion is a very serious problem which is growing worse as the number of cars on the road continues to increase, out-pacing the provision of road capacity. This paper presents a novel vehicle routing algorithm for TraffCon- an innovative Traffic Management System for Wireless ..."
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Cited by 8 (2 self)
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Abstract — Traffic Congestion is a very serious problem which is growing worse as the number of cars on the road continues to increase, out-pacing the provision of road capacity. This paper presents a novel vehicle routing algorithm for TraffCon- an innovative Traffic Management System for Wireless Vehicular Networks. The algorithm tackles the traffic congestion problem by seeking to optimize the usage of the existing road capacity, reduce vehicle trip times and decrease fuel consumption and the consequent gas emissions. Results demonstrate that the algorithm significantly reduces congestion, journey times and fuel consumption and emissions in comparison with an existing approach. I.
On the Structure and Evolution of Vehicular Networks
"... Abstract—Vehicular ad hoc networks have emerged recently as a platform to support intelligent inter-vehicle communication and improve traffic safety and performance. The road-constrained and high mobility of the vehicles, their unbounded power source, and the emergence of roadside wireless infrastru ..."
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Cited by 8 (4 self)
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Abstract—Vehicular ad hoc networks have emerged recently as a platform to support intelligent inter-vehicle communication and improve traffic safety and performance. The road-constrained and high mobility of the vehicles, their unbounded power source, and the emergence of roadside wireless infrastructures make VANETs a challenging research topic. A key to the development of protocols for intervehicle communication and services lies in the knowledge of the topological characteristics of the VANET communication graph. This article provides answers to the general question: how does a VANET communication graph look like over time and space? This study is the first one that examines a very large-scale VANET graph and conducts a thorough investigation of its topological characteristics using several metrics, not examined in previous studies. Our work characterizes a VANET graph at the connectivity (link) level, quantifies the notion of “qualitative ” nodes as required by routing and dissemination protocols, and examines the existence and evolution of communities (dense clusters of vehicles) in the VANET. Several latent facts about the VANET graph are revealed and incentives for their exploitation in protocol design are examined. I.
Exploiting the Height of Vehicles in Vehicular Communication
"... Abstract—One of the most challenging research issues in vehicular ad hoc networks (VANETs) is how to efficiently relay messages between vehicles. We propose a heuristic that uses the physical dimensions of vehicles to help determine whether or not a vehicle is an appropriate next hop. We base the he ..."
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Abstract—One of the most challenging research issues in vehicular ad hoc networks (VANETs) is how to efficiently relay messages between vehicles. We propose a heuristic that uses the physical dimensions of vehicles to help determine whether or not a vehicle is an appropriate next hop. We base the heuristic on the intuition that taller vehicles have an advantage over shorter ones because the former are less susceptible to shadowing from other vehicles. We implement a model that evaluates the efficacy of the proposed heuristic and we perform the experiments to validate the model. Based on both the experimental measurements and the simulations performed using the model, it is shown that tall vehicles consistently and significantly increase both the effective communication range and the message reachability. The effective communication range increased by more than 50%: from 290 meters when short vehicles are communicating to 450 meters in the case of tall vehicles. The results suggest that, when available, tall vehicles are significantly more likely to be better relays than short vehicles. The proposed heuristic is not dependent on any specific routing technique and can be used to improve the performance of different classes of routing protocols. Index Terms—vehicular networks, VANET, vehicle-to-vehicle communication, routing, experimental evaluation
TVR – tall vehicle relaying in vehicular networks,” arXiv preprint arXiv:1212.0616
, 2012
"... Abstract—Vehicle-to-Vehicle (V2V) communication is a core technology for enabling safety and non-safety applications in next generation Intelligent Transportation Systems. Due to relatively low heights of the antennas, V2V communication is often influenced by topographic features, man-made structure ..."
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Abstract—Vehicle-to-Vehicle (V2V) communication is a core technology for enabling safety and non-safety applications in next generation Intelligent Transportation Systems. Due to relatively low heights of the antennas, V2V communication is often influenced by topographic features, man-made structures, and other vehicles located between the communicating vehicles. On highways, it was shown experimentally that vehicles can obstruct the line of sight (LOS) communication up to 50 % of the time; furthermore, a single obstructing vehicle can reduce the power at the receiver by more than 20 dB. Based on both experimental measurements and simulations performed using a validated channel model, we show that the elevated position of antennas on tall vehicles improves communication performance. Tall vehicles can significantly increase the effective communication range, with an improvement of up to 50 % in certain scenarios. Using these findings, we propose a new V2V relaying scheme called Tall Vehicle Relaying (TVR) that takes advantage of better channel characteristics provided by tall vehicles. TVR distinguishes between tall and short vehicles and, where appropriate, chooses tall vehicles as next hop relays. We investigate TVR’s system-level performance through a combination of link-level experiments and system-level simulations and show that it outperforms existing techniques.
What is the best achievable QoS for unicast routing in VANETs
- In Proceedings of IEEE GLOBECOM workshops
, 2008
"... Abstract — Significant efforts and studies were recently re-ported for enabling active safety, traffic management, and com-mercial applications in Vehicular Ad Hoc Networks (VANET), since these applications are the drivers of the recent surge in VANET research and development. However, very few rese ..."
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Cited by 6 (3 self)
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Abstract — Significant efforts and studies were recently re-ported for enabling active safety, traffic management, and com-mercial applications in Vehicular Ad Hoc Networks (VANET), since these applications are the drivers of the recent surge in VANET research and development. However, very few research efforts considered analyzing the Quality of Service (QoS) metrics that will be available to these applications in VANET. Further-more, although there are many proposed solutions for routing in VANET, it is still unclear as to what specific characteristics VANET routing protocols should possess, since none of the proposed solutions achieves optimum performance in both urban and highway, as well as sparse and dense environment. To shed light on these issues, in this paper we analyze some of the most important QoS metrics in VANET. Namely, we determine the up-per performance bound for connection duration, packet delivery ratio, end-to-end delay, and jitter for unicast communication in typical highway and urban VANET environments. According to our results, delay and jitter in VANET would be adequate for most of the envisioned unicast-based applications, whereas the packet delivery ratio and connection duration might not meet the requirements for most unicast-based applications. Index Terms — VANET, vehicular ad hoc networks, QoS, connectivity, realistic mobility model, simulation, inter-vehicle communication, real-time applications, routing.
Lane reservation for highways (position paper
- In ITSC ’07: Proceedings of the 10th International IEEE Conference on Intelligent Transportation Systems
, 2007
"... Abstract — The only way to keep up with the ever-increasing number of cars on roads is through constant change and improvement in the transportation infrastructure. Construction of new roads is constrained by space and financial resources. Therefore, there is a need to devise ways to make optimal us ..."
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Cited by 5 (1 self)
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Abstract — The only way to keep up with the ever-increasing number of cars on roads is through constant change and improvement in the transportation infrastructure. Construction of new roads is constrained by space and financial resources. Therefore, there is a need to devise ways to make optimal use of the existing infrastructure. In this position paper, we describe a lane reservation system for highways. The idea is to allow drivers to reserve a slot on a high-priority lane by paying a premium price. The high-priority lane would provide congestion free travel between any two points on the highway. We describe the design of our system, the challenges that need to be solved and the evaluation methodology we are planning to adopt. I.
COOPERATIVE LOCALIZATION: ON MOTION-INDUCED INITIALIZATION AND JOINT STATE ESTIMATION UNDER COMMUNICATION CONSTRAINTS
"... This thesis would not have been possible without the support of a number of people. First of all, my thanks go to my adviser, Professor Stergios Roumeliotis, for his constant encouragement and guidance, for the long hours of passing along his knowledge and experience, for pushing me beyond my own li ..."
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This thesis would not have been possible without the support of a number of people. First of all, my thanks go to my adviser, Professor Stergios Roumeliotis, for his constant encouragement and guidance, for the long hours of passing along his knowledge and experience, for pushing me beyond my own limitations, and for his seemingly endless supply of interesting research problems. I am also thankful for the time and invaluable advice from
Moatassime H. Cooperation as a Service in VANETs
- Journal of Universal Computer Science 2011;17:1202–18. Nakanishi T, Yendo T, Fujii T, Tanimoto M. Right
"... Vehicular Sensor Networks (VSNs), stimulate a brand new variety of services, ranging from driver safety services, traffic information and warnings regarding traffic jams and accidents, to providing weather or road condition, parking availability, and advertisement. 3G networks and sophisticated Inte ..."
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Cited by 2 (0 self)
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Vehicular Sensor Networks (VSNs), stimulate a brand new variety of services, ranging from driver safety services, traffic information and warnings regarding traffic jams and accidents, to providing weather or road condition, parking availability, and advertisement. 3G networks and sophisticated Intelligent Transportation Systems (ITS), including deploying costly roadside base stations, can indeed be used to offer such services, but these come with a cost, both at network and hardware levels. In this paper we introduce Cooperation as a service (CaaS): A novel architecture that will allow providing a set of services for free and without any additional infrastructure, by taking advantage of Vehicle-to-Vehicle communications. CaaS uses a hybrid publish/subscribe mechanism where the driver (or subscriber) expresses his interests regarding a service (or a set of services) and where cars having subscribed to the same service will cooperate to provide the subscriber with the necessary information regarding the service he subscribed to, by publishing this information in the network. CaaS structures the network into clusters, and uses Content Based Routing (CBR) for intra-cluster communications and geographic routing for inter-cluster communications.
