WIRELESS COMMUNICATION NETWORKS

Modeling and Simulation

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 Connection info is important

What might be left out Cell hardware? Routing algorithms? Voice only (no data)? MAC protocol transients

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!

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?

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?

Further Resources

Read!Best way by far to understand the state of the

art is to read papersKeep a close eye on the models they use…

Lots of work in MAC and wireless channel-space sharing

NS3 Abundance of general DES

Questions?

Thanks!