Improving VANET protocols via network science

Monteiro, Romeu; Sargento, Susana; Viriyasitavat, Wantanee; Tonguz, O.K.

doi:10.1109/vnc.2012.6407428

Cited by 31 publications

(14 citation statements)

References 12 publications

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“…Theoretically, this might enable a vehicle to process the CAM messages received from several tens of neighboring vehicles without a major impact on the end-to-end system's critical-latency (around 100 ms for road safety applications). However, when assuming denser urban environments (e.g., 200/400 vehicles per km 2 [100]) combined with more heterogeneous data traffic loads, new lightweight and adaptive security solutions will need to be designed in order to not exceed the maximum allowable critical latencies of ITS safety-critical applications. …”

Section: Resultsmentioning

confidence: 99%

Security of Cooperative Intelligent Transport Systems: Standards, Threats Analysis and Cryptographic Countermeasures

2015

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Due to the growing number of vehicles on the roads worldwide, road traffic accidents are currently recognized as a major public safety problem. In this context, connected vehicles are considered as the key enabling technology to improve road safety and to foster the emergence of next generation cooperative intelligent transport systems (ITS). Through the use of wireless communication technologies, the deployment of ITS will enable vehicles to autonomously communicate with other nearby vehicles and roadside infrastructures and will open the door for a wide range of novel road safety and driver assistive applications. However, connecting wireless-enabled vehicles to external entities can make ITS applications vulnerable to various security threats, thus impacting the safety of drivers. This article reviews the current research challenges and opportunities related to the development of secure and safe ITS applications. It first explores the architecture and main characteristics of ITS systems and surveys the key enabling standards and projects. Then, various ITS security threats are analyzed and classified, along with their corresponding cryptographic countermeasures. Finally, a detailed ITS safety application case study is analyzed and evaluated in light of the European ETSI TC ITS standard. An experimental test-bed is presented, and several elliptic curve digital signature algorithms (ECDSA) are benchmarked for signing and verifying ITS safety messages. To conclude, lessons learned, open research challenges and opportunities are discussed.

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Section: Resultsmentioning

confidence: 99%

Security of Cooperative Intelligent Transport Systems: Standards, Threats Analysis and Cryptographic Countermeasures

2015

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“…Despite its simplicity, the protocol provides high reliability and efficiency by means of a simulation-based performance evaluation. Monteiro et al (2013) simulated highway and urban VANET scenarios of different sizes and vehicle densities. They studied parameters such as the node degree distribution, the clustering coefficient and the average shortest path length, then they showed how to use this information to improve existing VANET protocols.…”

Section: Related Workmentioning

confidence: 99%

RTAD: A real-time adaptive dissemination system for VANETs

Sanguesa

Fogue

Garrido

et al. 2015

Computer Communications

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Efficient message dissemination is of utmost importance to propel the development of useful services and applications in Vehicular ad hoc Networks (VANETs).In this paper, we propose a novel adaptive system that allows each vehicle to automatically adopt the optimal dissemination scheme in order to fit the warning message delivery policy to each specific situation. Our mechanism uses as input parameters the vehicular density and the topological characteristics of the environment where the vehicles are located, in order to decide which dissemination scheme to use. We compare our proposal with respect to two static dissemination schemes (eMDR and NJL), and three adaptive dissemination systems (UV-CAST, FDPD, and DV-CAST). Simulation results demonstrate that our approach significantly improves upon these solutions, being able to support more efficient warning message dissemination in all situations ranging from low densities with complex maps, to high densities in simple scenarios. In particular, RTAD improves existing approaches in terms of percentage of vehicles informed, while significantly reducing the number of messages sent, thus mitigating broadcast storms.

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“…Monteiro et al [12] decomposed the synthetic dynamical topology of VANETs into snapshots and calculated the macroparameters of the network such as the node degree distribution, the clustering coefficients, the average shortest path length, and so on for each topology snapshot. Based on the abstracted information from network science, a new efficient broadcasting protocol called UV-CAST has been proposed.…”

Section: Related Workmentioning

confidence: 99%

“…However, it has been proved not to be true in real mobility scenarios [15]. Literatures [11][12][13][14] provide new methods to explore VANETs' topology based on network science models. Literatures [13] and [14] also analyze the evolving topology by addressing the time-variant size of the connected components.…”

Section: Related Workmentioning

confidence: 99%

Empirical study on spatial and temporal features for vehicular wireless communications

Chen

Gü

et al. 2014

J Wireless Com Network

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Static topology analysis is not sufficient for the dynamic vehicular ad hoc network. Understanding the evolving topology of vehicular ad hoc networkings (VANETs) caused by vehicle mobility is very important for routing protocol design and algorithm optimization. This paper explores the spatial and temporal features of vehicular network topologies based on two real taxi-trace datasets. The analysis results reveal that the whole topology of VANETs consists of a large number of small-sized connected components. Two quantitative metrics are proposed to measure the stability and location dependency of the connected components. When the communication range is greater than a threshold, a large proportion of vehicles will connect to the biggest connected component, which is relatively stable and covers the most part of the downtown region of the city. Based on the analytical results, we propose several design philosophies and new research issues for VANETs.

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Improving VANET protocols via network science

Cited by 31 publications

References 12 publications

Security of Cooperative Intelligent Transport Systems: Standards, Threats Analysis and Cryptographic Countermeasures

Security of Cooperative Intelligent Transport Systems: Standards, Threats Analysis and Cryptographic Countermeasures

RTAD: A real-time adaptive dissemination system for VANETs

Empirical study on spatial and temporal features for vehicular wireless communications

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