Advertisement

New Scheme for Design of Static Virtual Topology in Wide Area Optical Networks

  • Raja Datta
  • Sujoy Ghose
  • Indranil Sengupta
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2571)

Abstract

In this paper, we present a new improved scheme to establish lightpaths in a physical topology for the formation of a static WDM optical connection graph. One of the major design issues in these networks is the assignment of the limited number of wavelengths among network stations so that greater capacity can be achieved. Many researchers have tackled the problem of routing and wavelength assignment (RWA) with a number of efficient heuristic algorithms. Our paper proposes a scheme to generate connection requests to connect physical nodes optically in an efficient way to form an improved virtual topology. To better the wavelength utilization we also propose a wavelength assignment algorithm which uses the best alternate physical path while establishing lightpaths. We have simulated about six thousand random graphs of various sizes and densities to show that our algorithm gives a better virtual topology compared to the existing ones.

Keywords

Optical connection graph Lightpath WDM Routing and Wavelength Assignment algorithms(RWA) WAN 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    I. Chlamtac, A. Ganz, and G. Karmi, “Lightpath communication: a novel approach to high bandwidth optical WDN’s.” IEEE Transactions on Communications, 40(7), July 1992, 1171–1182.CrossRefGoogle Scholar
  2. 2.
    Z. Zang and A. Acampora, “A heuristic wavelength assignment algorithm for multihop wdm networks with wavelength routing and wavelength re-use”, IEEE/ACM Transactions on Networking, 3(3), June 1995, 281–288.CrossRefGoogle Scholar
  3. 3.
    R. Ramaswami and K. N. Sivarajan, “Optical Networks: A practical perspective”, Morgan Kaufmann Publishers, 1998.Google Scholar
  4. 4.
    E. Karasan and E. Ayanoglu, “Effects of wavelength routing and selection algorithms on wavelength conversion gain in WDM optical networks”, IEEE/ACM Transactions on Networking, 6(2), April 1998, 186–196.CrossRefGoogle Scholar
  5. 5.
    I. Chlamtac, A. Ganz and G. Karmi, “Lightnets: Topologies for high speed optical networks”, IEEE/OSA Journal of Lightwave Technology, 11(5/6), May/June 1993, 951–961.CrossRefGoogle Scholar
  6. 6.
    I. Chlamtac, A. Farago and T. Zang, “Lightpath (wavelength) routing in large WDM networks”, IEEE Journal of Selected areas of communications, 14(5), June 1996, 909–913.CrossRefGoogle Scholar
  7. 7.
    A. Mokhtar and M. Azizoglu, “Adaptive Wavelength Routing in All-Optical networks”, IEEE/ACM Trans. Networking, 6(2), April 1998, 197–206.CrossRefGoogle Scholar
  8. 8.
    R. Ramaswami and K. N. Sivarajan, “Design of logical topologies for wavelengthrouted optical networks”, IEEE Journal of Selected areas of communications, 14(5), June 1996, 840–851.CrossRefGoogle Scholar
  9. 9.
    J. S. Choi and D. Su, “A functional classification of RWA schemes in DWDM networks: Static case”, NRC 2000, New Jersey, U.S.A. April 14–15, 2000.Google Scholar
  10. 10.
    G. Shen, S. K. Bose, T. H. Cheng, C. Lu, T. Y. Chai, “Efficient heuristic algorithms for light-path routing and wavelength assignment in WDM networks under dynamically varying loads”, Elsevier Computer Communications, 24(2001), 2001, 364–373.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Raja Datta
    • 1
  • Sujoy Ghose
    • 1
  • Indranil Sengupta
    • 1
  1. 1.Dept. of Computer Science and EngineeringIndian Institute of TechnologyKharagpurIndia

Personalised recommendations