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Proceedings Paper

Internet stream synchronization using Concord
Author(s): Cormac J. Sreenan; B. Narendran; Prathima Agrawal; Narayanan Shivakumar
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Paper Abstract

Using packet networks to transport multimedia introduces delay variations within and across streams, necessitating synchronization at the receiver. This requires stream data to be buffered prior to presentation, which also increases its total end to end delay. Concord recognizes that applications may wish to influence the underlying synchronization policy in terms of its effect on quality of service. It provides a single framework for synchronization within and across streams and employs an application specific tradeoff between packet losses, delay and inter- stream skew. We present a new predictive approach for synchronization and a selection of results from an extensive evaluation of Concord for use in the Internet. A trace driven simulator is used, allowing a direct comparison with alternative approaches. We demonstrate that Concord can operate with lower maximum delay and less variation in total end to end delay, which in turn can allow receiver buffer requirements to be reduced.

Paper Details

Date Published: 25 March 1996
PDF: 8 pages
Proc. SPIE 2667, Multimedia Computing and Networking 1996, (25 March 1996); doi: 10.1117/12.235888
Show Author Affiliations
Cormac J. Sreenan, AT&T Bell Labs. (United States)
B. Narendran, AT&T Bell Labs. (United States)
Prathima Agrawal, AT&T Bell Labs. (United States)
Narayanan Shivakumar, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 2667:
Multimedia Computing and Networking 1996
Martin Freeman; Paul Jardetzky; Harrick M. Vin, Editor(s)

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