Dynamic QoS renegotiation in the PNSVS videoconferencing application

  • Marc Boyer
  • Philippe Owezarski
  • Michel Diaz
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1483)


This paper aims to study the dynamic QoS renegotiation in a particular case, a videoconferencing application: PNSVS (Petri Net Synchronized Videoconferencing System). In the paper, we present first the QoS model (TSPN), the architecture and mechanisms used to achieve this QoS. Then we study how to handle with a synchronized switching of QoS. This leads us to a switching framework (an architecture and its protocol). Finally, we present measures proving that the architecture does not penalize the application and makes a graceful switching of QoS.


multimedia dynamic QoS renegotiation QoS switching synchronization conferencing 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Marc Boyer
    • 1
  • Philippe Owezarski
    • 1
  • Michel Diaz
    • 1
  1. 1.LAAS-CNRSToulouse Cedex 4France

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