SUBJECT

Models of infocommunication networks

lecture + practical

master

Faculty of Science

Physics MSc

4+0

Semester 3

Autumn semester

History of communication networks (telephone, Internet) and main technologies. Topology of networks: Internet AS and router level topology, Erdos-Renyi random networks, Barabasi-Albert scale-free networks, measurement of network topology. Traffic in networks: Erlang formuli, long range correlations, multifractal traffic models, on-off processes, Hurst-exponents. Microscopic description: basic concepts of queueing, M/G/1 queue, fluid model, diffusion model, available bandwidth, delay and available bandwidth measurements. Traffic control in TCP/IP: congestion window, stochastic models, 1 over sqrt(p) rule, mean field approximation, Network Simulator. The future of the Internet: peer-to-peer systems, wireless Internet, the PlanetLab

recommended readings:

• M. Crovella: Internet Measurements (2006)
• L. Kocarev – G. Vattay: Complex Dynamics in Communication Networks (Springer 2005)