Mobility-Tutorial-Sum-MAID-IMPACT-07-3

Mobility-Tutorial-Sum-MAID-IMPACT-07-3 - Tutorial Mobility...

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Ahmed Helmy Computer and Information Science and Engineering (CISE) College of Engineering University of Florida helmy@ufl.edu , http://www.cise.ufl.edu/~helmy Founder and Director: Tutorial Mobility Modeling for Design and Analysis of Ad Hoc Wireless Networks
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2 Geographic Services in Wireless Networks Robust Geographic Routing Robut Geocast Geographic Rendezvous for Mobile Peer-to-Peer Networks ( R2D2 ) Towards Behavioral Modeling and Context-Aware Protocols Mobility and Connectivity Modeling ( IMPORTANT & PATHS) Mobility-Assisted Information Diffusion (MAID) Trace-based Modeling of Behavior (IMPACT & MobiLib) The Next Generation Classroom & Context-Aware Protocols Outline
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* F. Bai, N. Sadagopan, A. Helmy, " IMPORTANT : A framework to systematically analyze the Impact of Mobility on Performance of RouTing protocols for Adhoc NeTworks", IEEE INFOCOM , pp. 825-835, April 2003. * F. Bai, N. Sadagopan, A. Helmy, “The IMPORTANT Framework for Analyzing the Impact of Mobility on Performance of Routing for Ad Hoc Networks”, AdHoc Networks Journal - Elsevier Science , Vol. 1, Issue 4, pp. 383-403, November 2003. * F. Bai, A. Helmy, "The IMPORTANT Framework for Analyzing and Modeling the Impact of Mobility in Wireless Adhoc Networks", Book Chapter in the book "Wireless Ad Hoc and Sensor Networks”, Kluwer Academic Publishers, June 2004. IMPORTANT : A framework to systematically analyze the " I mpact of M obility on P erformance O f R ou T ing in A d-hoc N e T works" Fan Bai, Narayanan Sadagopan, Ahmed Helmy {fbai, nsadagop, helmy}@usc.edu website “http://nile.usc.edu/important/”
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4 Motivation Randomized models (e.g., random waypoint) do not capture (I) Existence of geographic restriction (obstacles) (II) Temporal dependence of node movement (correlation over history) (III) Spatial dependence (correlation) of movement among nodes A systematic framework is needed to investigate the impact of various mobility models on the performance of different routing protocols for MANETs This study attempts to answer What are key characteristics of the mobility space? Which metrics can compare mobility models in a meaningful way? Whether mobility matters? To what degree? If the answer is yes, why? How? Geographic Restriction Spatial Correlation Temporal Correlation Mobility Space
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5 The IMPORTANT Framework Overview Mobility Models Connectivity Metrics Routing Protocol Performance DSR AODV DSDV GPSR GLS ZRP Mobility Metrics Performance Metrics Connectivity Graph Building Block Analysis Relative Speed Spatial Dependence Temporal Dependence Node Degree/Clustering Link Duration Path Duration Encounter Ratio Throughput Overhead Success rate Wasted Bandwidth Flooding Caching Error Detection Error Notification Error Handling Random Waypoint Group Mobility Freeway Mobility Manhattan Mobility Contraction/Expansion Hybrid Trace-driven
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6 Random Way Point ( RWP ) Group Mobility ( RPGM ) Freeway ( FW ) Manhattan ( MH ) IMPORTANT Mobility Models Leader member member
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7 Rich Coverage of Mobility & Connectivity Dimensions
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Mobility-Tutorial-Sum-MAID-IMPACT-07-3 - Tutorial Mobility...

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