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Group (Multicast) Communication in Wide-Area Networks
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Authors
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Don Towsley
Department of Computer Science
University of Massachusetts
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Abstract
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There is a growing demand for network support for group applications,
those that involve three or more participating users. Examples of such
applications include teleconferencing, distributed games,
software distribution, distributed database updates,
and command/control systems.
This tutorial will focus on the fundamental issues that arise when
developing
appropriate network support for these applications and the recent trends
in
their resolution. The most important of these issues relate to the
scalability
of proposed services and their suitability for applications including
users
with widely differing capabilities.
We will begin by reviewing the Internet's IP multicast model
and then focus on the problem of multicast routing and review some basic
approaches that have been proposed.
We will then focus on the following services required to support group
communications
- reliable data transfer,
- congestion control and flow control,
- support for continuous media
We will conclude with a brief description of some of the outstanding
performance issues in this area.
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Who should attend?
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This tutorial is intended for students and researchers who are familiar
with networking principles and who would like an overview of multicast
networking.
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Biography
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Don Towsley holds a B.A. in Physics (1971) and a Ph.D.
in Computer Science (1975) from University of Texas.
From 1976 to 1985 he was a member of the faculty of the Department of
Electrical and Computer Engineering at the University of Massachusetts,
Amherst. He is currently a Distinguished Professor at the University
of Massachusetts in the Department of Computer Science.
He has held visiting positions at IBM T.J. Watson Research
Center, Yorktown Heights, NY (1982-1983); Laboratoire MASI, Paris,
France (1989-1990); INRIA, Sophia-Antipolis, France (1996); and
AT&T Labs - Research, Florham Park, NJ (1997). His research
interests include networks, multimedia systems, and performance
evaluation.
He has received several awards including the 1998 IEEE Communications
Society William Bennett Paper Award and two best conference paper awards
from ACM SIGMETRICS in 1987 and 1996. Last, he has been elected Fellow
of both the ACM and IEEE.
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