QoS-aware active gateway for multimedia communication

Klara Nahrstedt, Duangdao Wichadakul

Research output: Chapter in Book/Report/Conference proceedingConference contribution


With the rapid growth of variety in networked multimedia applications over the Internet, active gateways between senders and receivers become more and more desirable. However, there are at least two major concerns to use the active network concept for multimedia communication at a gateway: (1) support of bounded end-to-end configuration delays when a gateway is dynamically configured with QoS services during media transmission, to maintain minimum QoS degradation (e.g. Jitters) and (2) support of bounded reconfiguration delays for fault tolerance handling when a gateway goes down and a new gateway needs to be reconfigured. We have designed, implemented and experimented with a QoS-aware active gateway architecture which addresses the two above described concerns. Our experiments and results show that an active gateway with flexible QoS services can be configured in an efficient manner and QoS guarantees can be preserved during the configuration/reconfiguration time if no additional security services such as authentication have to be performed at each reconfiguration request. In case of authentication our results show that the QoS will be degraded over a period of time and upgraded once the reconfiguration process is finished.

Original languageEnglish (US)
Title of host publicationInteractive Distributed Multimedia Systems and Telecommunication Services - 6th International Workshop, IDMS 1999, Proceedings
EditorsMichel Diaz, Philippe Owezarski, Patrick Sénac
Number of pages14
ISBN (Print)3540665951, 9783540665953
StatePublished - Jan 1 1999
Event6th International Workshop on Interactive Distributed Multimedia Systems and Telecommunication Services, IDMS 1999 - Toulouse, France
Duration: Oct 12 1999Oct 15 1999

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other6th International Workshop on Interactive Distributed Multimedia Systems and Telecommunication Services, IDMS 1999

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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