A heuristic search for routing and wavelength assignment in distributed WDM optical networks with limited range wavelength conversion

  • Authors:
  • Sahadeb Jana;Kajla Basu;Subhabrata Chowdhury

  • Affiliations:
  • Software Technology Parks of India, Electronics City, Bangalore, India;National Institute of Technology, Durgapur, India;National Institute of Technology, Durgapur, India

  • Venue:
  • ICDCN'08 Proceedings of the 9th international conference on Distributed computing and networking
  • Year:
  • 2008

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Abstract

In today's broadband communication optical network is mostly used for backbone network establishment. In optical networks, it's the advent of wavelength division multiplexing, WDM, not only helps us to properly utilize available bandwidth of optical fiber but also helps us to manage the optical fiber medium in better way. Continuous lightpath would be treated as solution for lightpath establishment. And availability of the same wavelength throughout the whole path would be, only, cause of a lightpath establishment. It's the unavailability of the same wavelength throughout a path would cause lightpath not to be established and that would increase call blocking probability. Wavelength conversion in limited manner, one step wavelength conversion, is one solution to minimize call blocking probability. Here one wavelength assignment and one routing algorithm have been proposed which give us better results in terms of call blocking probability and processing time for wavelength assignment.