Network Resource Management For Distributed Multimedia Presentations

Dr. B. Prabhakaran
Department of Computer Science
University of Maryland at College Park

Monday, April 21, 1997
11 a.m. - 12 noon
Fuller Labs 311

Distributed multimedia presentations deal with storage and retrieval of information comprising of diverse media types such as text, audio, image, and video. The focus of my work has been to understand the performance behavior of such distributed multimedia presentation applications. The performance behavior is discussed in terms of the probable network load offered and the network resources required. The network load is characterized by the network traffic that might be generated by a multimedia presentation application. Required network resources are specified by a set of Quality of Service (QoS) parameters - throughput, delay, delay jitter and packet loss - that should be guaranteed by the network service provider to an application.

A multimedia presentation application is characterized by a set of temporal relationships that describe when an object should be presented, for how long it should be presented, and how it is related to presentation of other objects. These temporal relationships describe a predictable pattern of events that happen in the time domain. Such a pattern can be used by the network service provider to understand the performance behavior of distributed multimedia presentation applications.

In this talk, I describe the approaches that can be used for characterizing the performance behavior of distributed multimedia presentations. I also discuss models that can be used for representing temporal relationships among multimedia objects.

Key Papers:

B. Prabhakaran and S.V. Raghavan, "Synchronization Models For Multimedia Presentation With User Participation", ACM/Springer-Verlag Journal of Multimedia Systems, Vol.2, No. 2, August 1994, pp. 53-62. Also in the Proceedings of the First ACM Conference on Multimedia Systems, Anaheim, California, August 1993, pp.157-166.
S.V. Raghavan, B. Prabhakaran and S.K. Tripathi, "Synchronization Representation and Traffic Source Modeling in Orchestrated Presentation", IEEE Journal on Selected Areas in Communication, special issue on Multimedia Synchronization, Vol. 14, No. 1, January 1996, pp. 104-113.
S.V. Raghavan, B. Prabhakaran and S.K. Tripathi, "Handling QoS Negotiations In Orchestrated Multimedia Presentation", Journal of High Speed Networking, Vol. 5, No. 3, 1996, pp. 277-292.
K.S. Candan, B. Prabhakaran and V.S. Subrahmanian, "CHIMP : A Framework for Supporting Multimedia Document Authoring and Presentation", Proceedings of ACM Multimedia '96 Conference, Boston, November 1996.
E. Hwang, B. Prabhakaran and V.S. Subrahmanian, "Resource Lock Commit Protocol (RLCP) for Multimedia Objects Retrieval", CS TR 3746, Umiacs TR 97-08, University of Maryland, College Park, Computer Science Technical Report Series, January 1997.

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