scholarly journals A Reputation System for Traffic Safety Event on Vehicular Ad Hoc Networks

2009 ◽  
Vol 2009 (1) ◽  
Author(s):  
Nai-Wei Lo ◽  
Hsiao-Chien Tsai
Keyword(s):  
Ad Hoc Networks ◽  
Traffic Safety ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Reputation System ◽  
Safety Event ◽  
Hoc Networks

scholarly journals Cooperation as a Service in VANET: Implementation and Simulation Results

2012 ◽  
Vol 8 (2) ◽  
pp. 153-172 ◽  
Author(s):  
Hajar Mousannif ◽  
Ismail Khalil ◽  
Stephan Olariu
Keyword(s):  
Ad Hoc Networks ◽  
Traffic Safety ◽  
Vehicular Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Network Routing ◽  
The Road ◽  
Vehicle To Vehicle ◽  
Simulation Results ◽  
Hoc Networks

The past decade has witnessed the emergence of Vehicular Ad-hoc Networks (VANET), specializing from the well-known Mobile Ad Hoc Networks (MANET) to Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) wireless communications. While the original motivation for Vehicular Networks was to promote traffic safety, recently it has become increasingly obvious that Vehicular Networks open new vistas for Internet access, providing weather or road condition, parking availability, distributed gaming, and advertisement. In previous papers [27,28], we introduced Cooperation as a Service (CaaS); a new service-oriented solution which enables improved and new services for the road users and an optimized use of the road network through vehicle's cooperation and vehicle-to-vehicle communications. The current paper is an extension of the first ones; it describes an improved version of CaaS and provides its full implementation details and simulation results. CaaS structures the network into clusters, and uses Content Based Routing (CBR) for intra-cluster communications and DTN (Delay–and disruption-Tolerant Network) routing for inter-cluster communications. To show the feasibility of our approach, we implemented and tested CaaS using Opnet modeler software package. Simulation results prove the correctness of our protocol and indicate that CaaS achieves higher performance as compared to an Epidemic approach.

scholarly journals Evaluation of Selective Broadcast Algorithms for Safety Applications in Vehicular Ad Hoc Networks

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
Kaan Bür ◽  
Maria Kihl
Keyword(s):  
Ad Hoc Networks ◽  
Traffic Safety ◽  
High Performance ◽  
Information Dissemination ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Emergency Situation ◽  
Performance Criteria ◽  
Safety Warning ◽  
Hoc Networks

Just as wireless communications develop further to achieve higher performance, new application areas emerge to challenge the limits. Vehicular ad hoc networks are one of these areas, and emergency situation warning is one of their most popular applications since traffic safety is a concern for everyone. Due to the life-critical nature of emergency applications, however, it is extremely important to ensure the solutions proposed meet the standards required, such as reliable and timely delivery of the safety warning in a situation like car collision avoidance. In order to put the candidate solutions to the test and evaluate their feasibility, we adopt the approach of computer simulation. We implement four different selective broadcast algorithms used for information dissemination in vehicular ad hoc networks, and compare their performance under identical realistic simulation conditions. Our goal is to provide an evaluation focussing on the performance with respect to safety, rather than to network aspects like throughput, loss, and delay. We define four new performance criteria to address the effectiveness, efficiency, timeliness, and overhead of the broadcast algorithms in safety warning delivery. The results we obtain using these criteria help us to understand better the design requirements of a high-performance selective broadcast algorithm.

Computing Traffic Information in the Cloud

2015 ◽  
pp. 1062-1079
Author(s):  
Po-Ting Wei ◽  
Tai-Chi Wang ◽  
Shih-Yu Chang ◽  
Yeh-Ching Chung
Keyword(s):  
Ad Hoc Networks ◽  
Real Time ◽  
Traffic Safety ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Traffic Information ◽  
Traffic Light ◽  
Real Time Traffic ◽  
Hoc Networks ◽  
Commercial Applications

Vehicular ad hoc networks have been envisioned to be useful in road safety and commercial applications. In addition, in-vehicle capabilities could be used as a service to provide a variety of applications, for example, to provide real-time junction view of road intersections or to address traffic status for advanced traffic light control. In this work, the authors construct a cloud service over vehicular ad hoc networks to provide event data including capturing videos or Global Positioning System (GPS) data. Moreover, the authors integrate the GPS receiver and the navigation software equipped over On Board Unit to create a Geographic Information System digital map and to offer a traffic safety application. The hardware is implemented by Eeepad for integrating camera and GPS. Furthermore, the cyclic recording scheme has been addressed for data transmission and query. With the design, people can get real-time traffic information including traffic videos or geographical data in the cloud.

scholarly journals Integration of Body Sensor Networks and Vehicular Ad-hoc Networks for Traffic Safety

Sensors ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 107 ◽  
Author(s):  
Angelica Reyes-Muñoz ◽  
Mari Domingo ◽  
Marco López-Trinidad ◽  
José Delgado
Keyword(s):  
Sensor Networks ◽  
Ad Hoc Networks ◽  
Traffic Safety ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Body Sensor Networks ◽  
Hoc Networks

MAC Protocols in Vehicular Ad Hoc Networks

2010 ◽  
pp. 183-205
Author(s):  
Chih-Yung Chang
Keyword(s):  
Ad Hoc Networks ◽  
Traffic Safety ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Rapid Development ◽  
Mac Protocols ◽  
Bandwidth Utilization ◽  
Potential Applications ◽  
Hoc Networks ◽  
Message Broadcasting

With the rapid development of wireless technologies, the Vehicular Ad Hoc Networks (VANETs) have recently received much attention. VANETs technologies aim to ensure traffic safety for drivers, provide comfort for passengers and reduce transportation time and fuel consumption with many potential applications. The achievement of these aims highly relies on efficient MAC protocols which determine the performance of packet transmission in terms of success rate, delay, throughput and bandwidth utilization. This chapter reviews the existing MAC protocols developed for VANETs. Initially, the IEEE 802.11p and DSRC standard are reviewed. Three TDMA-based MAC protocols, called CVIA, VeSOMAC and D*S, are then introduced. In addition, three MAC protocols that cope with the emergency-message broadcasting problem are proposed. Finally, a reliable MAC protocol which is developed based on the cluster topology is reviewed.

A Geocast Protocol with Information-Centric Perspective in Vehicular Ad-Hoc Networks (VANETs)

2018 ◽  
Vol 7 (2) ◽  
pp. 1-18
Author(s):  
Houacine Abdelkrim ◽  
Guezouri Mustapha
Keyword(s):  
Ad Hoc Networks ◽  
Routing Protocol ◽  
Traffic Safety ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Road Traffic ◽  
High Mobility ◽  
Road Traffic Safety ◽  
Hoc Networks

Vehicular ad-hoc networks (VANETs) is subclass of network of mobile ad-hoc network (MANET) type, it has emerged as a platform that supports inter-vehicles communication to improve road traffic safety. A conventional packet-based routing protocol where a packet moves from a source to a destination untouched throughout the entire process no longer satisfies the requirements in VANETs because of the high mobility of vehicles. This article proposes a routing protocol with an information-centric perspective for the VANETs, the techniques invoked are: Geocast instead of the classical multicast and the aggregation location-based. The simulation results under NS-3 and SUMO show that this protocol can help to limit the redundancy of the messages exchanged by their aggregation without maintaining a hierarchical structure; which minimizes transmission costs and ensures reliability and performance.

scholarly journals Survey on QoE/QoS Correlation Models for Video Streaming over Vehicular Ad-hoc Networks

2019 ◽  
Vol 26 (4) ◽  
pp. 267-287
Keyword(s):  
Ad Hoc Networks ◽  
Video Streaming ◽  
Traffic Safety ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
End User ◽  
Multimedia Services ◽  
Correlation Models ◽  
Hoc Networks

Vehicular Ad-hoc Networks (VANETs) are a new emerging technology which has attracted enormous interest over the last few years. It enables vehicles to communicate with each other and with roadside infrastructures for many applications. One of the promising applications is multimedia services for traffic safety or infotainment. The video service requires a good quality to satisfy the end-user known as the Quality of Experience (QoE). Several models have been suggested in the literature to measure or predict this metric. In this paper, we present an overview of interesting researches, which propose QoE models for video streaming over VANETs. The limits and deficiencies of these models are identified, which shed light on the challenges and real problems to overcome in the future.

scholarly journals A Fuzzy Reputation System in Vehicular Ad hoc Networks

2011 ◽  
Vol 5 ◽  
pp. 951-956 ◽  
Author(s):  
Mohammad Jalali ◽  
Nasser Ghasem Aghaee
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Reputation System ◽  
Hoc Networks
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