L4-ef.ppt - Efficient Flooding Techniques for Mobile Ad Hoc...

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Efficient Flooding Techniques for Mobile Ad Hoc Networks Special Topic for CS 487/587 Department of Computer Science Iowa State University
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1. Introduction on MANET 2. Existing flooding techniques 3. Proposed techniques 4. Future Works Outline
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Mobile Ad Hoc Networks (MANET) Characteristics of MANET No fixed network infrastructure Hosts act as routers on demand Flooding is a communication primitive Frequently invoked for route discovery
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Plain Flooding Each host needs to forward a broadcast if the broadcast is received at the first time Advantage : simple and reliable Drawback : broadcast storm
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Probabilistic Broadcasting [Tseng99, Sasson01] Each host forwards only a certain percentage of the flooding packets it receives Advantage : reduced network traffic Drawback : not reliable
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Multipoint Relaying [Laouite01, Peng02, etc . ] Each host selects some of its 1-hop neighbors to forward Require 2-hop topology Intensive computation B A 2 1 3 4 C D E
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Research Motivation
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