Helmy-Mobility-Tutorial-Mswim-1

Helmy-Mobility-Tutorial-Mswim-1 - Tutorial Mobility...

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Ahmed Helmy Computer and Information Science and Engineering (CISE) College of Engineering University of Florida [email protected] , http://www.cise.ufl.edu/~helmy Founder and Director: Tutorial Mobility Modeling for Future Mobile Network Design and Simulation
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2 Outline Mobile Ad Hoc Networks & Mobility Classification Synthetic and Trace-based Mobility Models The Need for Systematic Mobility Framework Survey of the Major Mobility Models Random models - Group mobility models – Vehicular (Manhattan/Freeway) models - Obstacle models Characterizing the Mobility Space Mobility Dimensions (spatial and temporal dependency, geographic restrictions) Mobility Metrics (spatio-temporal correlations, path and link duration)
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3 Outline (contd.) Mobility-centric framework to analyze ad hoc networks The IMPORTANT mobility framework Case Studies: BRICS , PATHS , MAID Trace-based mobility modeling Analyzing wireless network measurements and traces The time-variant community ( TVC) model The profile-cast communication paradigm Mobility simulation and analysis tools Software packages, tools, resources and related projects
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4 Wireless Mobile Ad hoc Networks (MANETs) A Mobile Ad hoc Network ( MANET ) is a collection of mobile devices forming a multi-hop wireless network with minimal (or no) infrastructure To evaluate/study adhoc networks mobility and traffic patterns are two significant factors affecting protocol performance. Wireless network performance evaluation uses: Mobility Patterns: usually, uniformly and randomly chosen destinations (random waypoint model) Traffic Patterns: usually, uniformly and randomly chosen communicating nodes with long-lived connections Impact of mobility on wireless networks and ad hoc routing protocols is significant
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5 Example Ad hoc Networks Mobile devices (laptop, PDAs) Vehicular Networks on Highways Hybrid urban ad hoc network (vehicular, pedestrian, hot spots,…)
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6 Mobility Static (e.g., sensor networks) Mobile Controlled Mobility Uncontrolled Mobility Hybrid Predictable Mobility Unpredictable Mobility Hybrid Hybrid Classification of Mobility and Mobility Models I- Based on Controllability II- Based on Model Construction Model Synthetic Trace-based Movement Pattern Usage pattern Hybrid Hybrid
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7 Mobility Dimensions & Classification of Synthetic Uncontrolled Mobility Models * F. Bai, A. Helmy, "A Survey of Mobility Modeling and Analysis in Wireles Adhoc Networks", Book Chapter in the book "Wireless Ad Hoc and Sensor Networks”, Kluwer Academic Publishers, June 2004.
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8 I. Random Waypoint ( RWP ) Model 1. A node chooses a random destination anywhere in the network field 2. The node moves towards that destination with a velocity chosen randomly from [0, Vmax ] 3. After reaching the destination, the node stops for a duration defined by the “pause time” parameter.
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This note was uploaded on 05/27/2011 for the course CIS 4930 taught by Professor Staff during the Spring '08 term at University of Florida.

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Helmy-Mobility-Tutorial-Mswim-1 - Tutorial Mobility...

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