Cost-reduction using non-uniform traffic in optical networks

Farsheed Farjady, N.J. Doran

Research output: Chapter in Book/Report/Conference proceedingConference publication

Abstract

Next-generation networks are likely to be non-uniform in all their aspects, including number of lightpaths carried per link, number of wavelengths per link, number of fibres per link, asymmetry of the links, and traffic flows. Routing and wavelength allocation models generally assume that the optical network is uniform and that the number of wavelengths per link is a constant. In practice however, some nodes and links carry heavy traffic and additional wavelengths are needed in those links. We study a wavelength-routed optical network based on the UK JANET topology where traffic demands between nodes are assumed to be non-uniform. We investigate how network capacity can be increased by locating congested links and suggesting cost-effective upgrades. Different traffic demands patterns, hop distances, number of wavelengths per link, and routing algorithms are considered. Numerical results show that a 95% increase in network capacity is possible by overlaying fibre on just 5% of existing links. We conclude that non-uniform traffic allocation can be beneficial to localize traffic in nodes and links deep in the network core and provisioning of additional resources there can efficiently and cost-effectively increase network capacity.

Original languageEnglish
Title of host publication15th International Conference on Transparent Optical Networks, ICTON 2013
PublisherIEEE
Number of pages4
ISBN (Electronic)978-1-4799-0683-3
ISBN (Print)978-1-4799-0682-6
DOIs
Publication statusPublished - 2013
Event15th International Conference on Transparent Optical Networks - Cartagena, Spain
Duration: 23 Jun 201327 Jun 2013

Publication series

NameIEEE conference publications
PublisherIEEE
ISSN (Print)2161-2056

Conference

Conference15th International Conference on Transparent Optical Networks
Abbreviated titleICTON 2013
CountrySpain
CityCartagena
Period23/06/1327/06/13

Keywords

  • constraint-based routing
  • fibre overlay
  • optical networks
  • routing and wavelength allocation
  • wavelength division multiplexing
  • wavelength routing

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  • Research Output

    • 10 Conference contribution

    Are few-mode fibres a practical solution to the capacity crunch?

    Ellis, A. & Doran, N., 2013, 15th International Conference on Transparent Optical Networks, ICTON 2013. IEEE, 4 p. Tu.C2.1. (IEEE conference publications).

    Research output: Chapter in Book/Report/Conference proceedingConference publication

    Open Access
    File
  • Cost-efficient OFDM generation at 60-GHz by heterodyne technique with direct modulation and envelope detector

    Aldaya, I., Gosset, C., Campuzano, G., Giacoumidis, E. & Castañón, G., 2013, 15th International Conference on Transparent Optical Networks, ICTON 2013. IEEE, 5 p. Tu.P.5. (IEEE conference publications).

    Research output: Chapter in Book/Report/Conference proceedingConference publication

  • Design of nonlinear regenerative transmission systems with high capacity

    Sorokina, M. A. & Turitsyn, S. K., 2013, 15th International Conference on Transparent Optical Networks, ICTON 2013. IEEE, 4 p. Mo.D1.3. (IEEE conference publications).

    Research output: Chapter in Book/Report/Conference proceedingConference publication

    Cite this

    Farjady, F., & Doran, N. J. (2013). Cost-reduction using non-uniform traffic in optical networks. In 15th International Conference on Transparent Optical Networks, ICTON 2013 [Tu.P.1] (IEEE conference publications). IEEE. https://doi.org/10.1109/ICTON.2013.6602871