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24th june 2004
Computer Laboratory > Research > Systems Research Group > NetOS > Seminars > 24th june 2004

Quality-aware Service Composition and Routing Framework for Advanced Distributed Multimedia Services

Klara Nahrstedt
Currently, peer-to-peer overlay networks have evolved and represent an important service delivery infrastructure instead of merely providing host connectivity. Various multimedia services such as media players, multimedia transcoders, filters, mixers, are becoming available as stand-alone services offered to be included into a more complex multimedia service. The question is how to allow for an autonomous composition and establishment of even more complex distributed multimedia services in this overlay service network.
In this talk, we will present a Quality-aware service composition and service routing framework for advanced multimedia services. We will discuss centralized and fully distributed service composition and routing middleware approaches to assist in creation and management of distributed multimedia services. The overall goal is to present algorithms that allow for flexible, scaleable, load-balanced, self-healing, and automated establishment and management of advanced Quality-aware distributed multimedia services. Our current results via simulations and real experiments indicate the feasibility and correctness of our framework when applied to services such as mobile video and audio on demand, and content- customized video on demand.

Speaker Bio
Klara Nahrstedt is an associate professor at the University of Illinois at Urbana-Champaign, Computer Science Department. Her research interests are directed towards multimedia middleware systems, quality of service(QoS), QoS routing, QoS-aware resource management in distributed multimedia systems, and multimedia security. She is the coauthor of the widely used multimedia book `Multimedia: Computing, Communications and Applications' published by Prentice Hall, the recipient of the Early NSF Career Award, the Junior Xerox Award, and the IEEE Communication Society Leonard Abraham Award for Research Achievements. She is the editor-in-chief of ACM/Springer Multimedia Systems Journal, and the Ralph and Catherine Fisher Associate Professor. Klara Nahrstedt received her BA in mathematics from Humboldt University, Berlin, in 1984, and M.Sc. degree in numerical analysis from the same university in 1985. She was a research scientist in the Institute for Informatik in Berlin until 1990. In 1995 she received her PhD from the University of Pennsylvania in the department of Computer and Information Science.