On distributed service selection for qos driven service composition

  • Authors:
  • Fei Li;Fangchun Yang;Sen Su

  • Affiliations:
  • State Key Lab. of Networking and Switching, Beijing University of, Posts and Telecommunications, Beijing, P.R.China;State Key Lab. of Networking and Switching, Beijing University of, Posts and Telecommunications, Beijing, P.R.China;State Key Lab. of Networking and Switching, Beijing University of, Posts and Telecommunications, Beijing, P.R.China

  • Venue:
  • EC-Web'06 Proceedings of the 7th international conference on E-Commerce and Web Technologies
  • Year:
  • 2006

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Abstract

The service oriented paradigm promises dynamic service discovery and on-the-fly service composition to fulfill user requirements. For the dynamic and heterogeneous nature of service and network, ensuring end-to-end QoS (Quality of Service) becomes a challenge in service composition. This paper proposes a distributed QoS registry architecture, in which QoS registries could maintain services cooperatively and exchange information. Then we present a model combining network QoS and service QoS together to show their impact on end-to-end QoS. Based on the distributed QoS registry and combined QoS model, we present a distributed service selection algorithm to find optimal service composition plan. Experimental results show that the algorithm achieves excellent selection result with outstanding performance in our architecture.