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Modeling and Simulation

Modeling and Simulation. Wireless communication Networks. Scale. A common Issue How accurate do you need? What are you trying to understand? What are your assumptions?. Scale. Examples Experiments to understand connection dynamics in a cell phone network Mobility is important

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Modeling and Simulation

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  1. Modeling and Simulation Wireless communication Networks

  2. Scale • A common Issue • How accurate do you need? • What are you trying to understand? • What are your assumptions?

  3. Scale • Examples • Experiments to understand connection dynamics in a cell phone network • Mobility is important • Connection info is important • What might be left out • Cell hardware? • Routing algorithms? • Voice only (no data)? • MAC protocol transients

  4. Scale • Examples • Experiments to discover effect of transience in BGP in high-tier internet traffic • DES may not even be sufficient! • Need fine-granularity • Still may not need MAC protocols!

  5. Scale • Mobile Ad Hoc Wireless • How many nodes? • How fast do they move? • How complex of a wireless model? • Simple SNR, Directed Antenae, co-channel interference… • Battery life?

  6. By the way • Discrete Event Simulation! • A simple concept • Agents and Events Very Intuitive • Very OO friendly, Hooray! • What package to use? • Look at scale issues! • How much do you like to program?

  7. Further Resources • Read! • Best way by far to understand the state of the art is to read papers • Keep a close eye on the models they use… • Lots of work in MAC and wireless channel-space sharing • NS3 • Abundance of general DES

  8. Questions? Thanks!

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