***************SEMINAR ANNOUNCEMENT***************************
"Fractal Traffic Models for Internet Simulation"
Dr. Bo Ryu
Teledesic LLC
Kirkland, WA
Date/Time: Sep. 13 (Mon), 11-12 noon
Location: EE/CSE 303
Abstract:
Fractal geometry, frequently portrayed as the opposite to mathematically
elegant and tractable Euclid geometry, has revealed the new horizon on
the way our minds observe and interpret the various shapes of nature we
see everyday. The recent discovery of fractal characteristics of
Internet traffic, to which we contribute everyday in all forms of our
work, has perhaps created the similar impact on the teletraffic modeling
and analysis. This is attributed to its simplicity to explain the
extreme burstiness of Internet traffic which would be otherwise
difficult, if not impossible, to capture with traditional,
mathematically elegant Markovian models.
This has brought tremendous interests from networking researchers and
practitioners, but some of the recent research effort have generated
results that are seemingly confusing or contradictory.
The goal of this talk is to correctly digest the recent contributions,
examine the current status, and lay out potential and practical research
directions in the area of fractal network traffic research.
It will consist of three major parts:
- Understanding fractal nature of Internet traffic;
- Recent results from traffic analysis of Internet traffic, and various
modeling approach for capturing fractal characteristics of these traces;
- Implications of fractal behavior in traffic engineering.
By doing so, we hope to provide a unified approach to the understanding
of the role and usefulness of fractal behavior for traffic engineering
for the next generation Internet.
Bio:
Bo Ryu received his Ph.D. from Columbia University in 1996, and is currently
a senior member of the technical staff in Teledesic, LLC. His Ph.D. thesis
focused on novel approaches to modeling fractal characteristics of Internet
traffic and understanding its practical implications for traffic management.
While working at Bell Laboratories during the summer of 1995, he showed that
contrary to a widespread belief, fractal characteristics of compressed video
traffic are not relevant to real-time traffic engineering. Prior to joining
Teledesic in 1999, he was with HRL laboratories where he has lead various
wireless and satellite networking projects, including MBone QoS experiments
over NASA ACTS ATM network, DARPA's Digital Wireless Battlefield Network
TRP, wireless ad hoc routing protocol design, and MAC protocol for broadband
satellite networks. Currently, he is responsible for resource management and
performance evaluation of Teledesic's broadband LEO networks. His main
research interests include Internet traffic characterization, multiple
access for satellite networks, performance analysis, admission control, and
wireless ad hoc networks.