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In this paper, we present performance evaluation of various routing protocols including SIFT, GPSR and GOSR using different mobility models such as Random Waypoint Model (RWM), Fluid Traffic Model (FTM) and Intelligent Driver Model with Intersection Management (IDM-IM). We present simulation results that illustrate the importance of choosing a mobility model in the simulation of a vehicular network...
The Vehicular Ad hoc Network (VANET), a subset of Mobile Ad hoc Network, is used in many applications such as assisting driver with signage, road traffic reporting, telling the way, etc. Since VANET has highly dynamic topology and various vehicle densities, developing a routing protocol that can satisfy above applications requirements is a great challenge. In this paper, we present an efficient Road...
Information Hovering applies in many applications in Vehicular Ad Hoc Networks, where useful information needs to be made available to all vehicles within a confined geographical area for a specific time interval. A straightforward approach is to have all vehicles within the hovering area exchange messages with each other. However, this method does not guarantee that all vehicles within the hovering...
Modeling radio wave propagation by a perfect circle around a transmitter is absolutely wrong. Obstacles effect must be considered especially in obstructed environments. In this paper we present a propagation model for vehicular network which takes into account the impact of physical obstacles present in the environment on electromagnetic wave propagation. Based on this model, we present a study of...
We present FastTrans - a parallel, distributed-memory simulator for transportation networks that uses a queue-based event-driven approach to traffic microsimulation. Queue-based simulation models have been shown to be significantly faster than cellular-automata type approaches, sacrificing spatial granularity for speed, while preserving link and intersection dynamics with high fidelity. Significant...
We describe the various aspects involved in building FastTrans, a scalable, parallel microsimulator for transportation networks that can simulate and route tens of millions of vehicles on real-world road networks in a fraction of real time. Vehicular trips are generated using agent-based simulations that provide realistic, daily activity schedules for a synthetic population of millions of intelligent...
The increasing capabilities of mobile devices, and advances in wireless networking technologies enable mobile computing systems to introduce more intelligent behaviors to support their services such as spatial navigation for drivers. Mobile applications should be able to be aware of, and adapt to environment changes to provide more customized services to their users. Building mobile applications by...
In this article, we propose a general-purpose disaster support system based on generalized (multiplicatively-weighted order-k Minkowski-metric) Voronoi diagrams. The proposed system is capable of handling disasters (or emergency units) having different weights in the complete order from 1 to k in the three popular Minkowski metrics (Euclidean, Manhattan and Maximum distance space). The proposed model...
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