A comparison of two optimal approaches for the MCOP problem

  • Authors:
  • Wen-Lin Yang

  • Affiliations:
  • Department of Information Technology, National Pingtung Institute of Commerce. No. 5l, Ming-Sheng East Road, Pingtung City 900, Taiwan, ROC

  • Venue:
  • Journal of Network and Computer Applications
  • Year:
  • 2004

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Abstract

Providing guaranteed end-to-end quality of service (QoS) is a key issue for deploying multimedia applications on the broadband integrated services networks. To support QoS-based services, an optimal path determination problem, which concerns how to select a feasible end-to-end path to simultaneously satisfy multiple QoS constraints, has to be studied. This problem is often referred as the multiple constrained optimal path problem. Two optimal algorithms: branch-and-bound and extended Bellman-Ford algorithms (EBFA) are proposed in this paper for this NP-complete problem. A number of simulations for different network topologies were carried out for comparing performances between these two algorithms. The experimental results show that the branch-and-bound based algorithm not only outperforms the EBFA, but also is an efficient and stable method when it applies to random networks and practical networks like ANSNET.