Type of Document	Thesis
Author	Mahajan, Atulya
Author's Email Address	mahajan@cs.fsu.edu
URN	etd-04072006-234459
Title	Urban Mobility Models for Vehicular Ad Hoc Networks
Degree	Master of Science
Department	Computer Science, Department of
Advisory Committee	Advisor Name Title andy wang Committee Co-Chair kartik gopalan Committee Co-Chair zhenhai duan Committee Member
Keywords	Mobility Model Mobile Ad Hoc Networks Vanet
Date of Defense	2006-04-07
Availability	unrestricted
Abstract Mobility models, or the mobility patterns used to simulate the motion of participating nodes, play a vital role in the simulation of Vehicular Ad Hoc Networks (VANET). Even with recent research focusing on development of mobility models that better correspond to real-world situations, we still have a limited understanding of the level of detail required for modeling and simulating VANETs. This thesis presents a set of mobility models for VANETs and provides the capability to study the effect of simulating various levels of real-world details such as traffic lights, multi-lane roads, and vehicle acceleration/deceleration. In contrast to earlier work in this area, this research addresses the following question: What level of simulation detail is necessary to capture the behavior of ad-hoc routing protocols in urban contexts? In order to achieve this goal, this work involved creation of several new mobility models that account for varying levels of constraints on vehicular movement such as traffic lights, multi-lane roads, and acceleration/deceleration. Using physical topologies based on real maps and synthetic grids, the new mobility models and certain other mobility models were subjected to an exhaustive set of experiments to evaluate the effect of various factors such as topology, speed, wait times, and various realistic traffic mechanisms. The results demonstrated that the acceleration/deceleration of vehicles and the clustering effect introduced as a result of the vehicles waiting at intersections are some of the significant factors that affect the delivery ratio and packet delays in VANETs. Another important finding was that simulation of multiple lanes only marginally affected VANET routing performance in our experimental settings. These findings are an important first step toward future development of mobility models for VANET simulations.
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