A QoS-based Service Composition for Content Adaptation

  • Authors:

  • Khalil El-Khatib;Gregor v. Bochmann;Abdulmotaleb El-Saddik

  • Affiliations:

  • University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, Ontario, Canada L1H 7K4. Khalil.el-khatib@uoit.ca;School of Information Technology&Engineering, University of Ottawa, 800 King Edwards, Ottawa, On., Canada K1N 6N5. bochmann@site.uottawa.ca;School of Information Technology&Engineering, University of Ottawa, 800 King Edwards, Ottawa, On., Canada K1N 6N5. elsaddik@site.uottawa.ca

  • Venue:
  • ICDEW '07 Proceedings of the 2007 IEEE 23rd International Conference on Data Engineering Workshop
  • Year:
  • 2007

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Abstract

Today's Internet suffers from the problem of heterogeneity in client devices, network connectivity, content format, and users' preferences. The framework presented in this paper tackles this problem using the approach of service composition to support distributed multimedia applications. The discussed framework for trans-coding multimedia streams uses self-organizing, resilient data distribution algorithms. The framework takes into consideration the profile of communicating devices, network connectivity, exchanged content formats, context description, and available adaptation services to find a chain of adaptation services that could be applied to the content. Part of the framework is a selection algorithm that finds the best sequence of adaptation services that can maximize the user's satisfaction with the delivered content.