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Spectrum Allocation Policies in Flexi-Grid Optical Networks

  • M. B. SumalathaEmail author
  • L. M. Aishwarya
  • C. L. Triveni
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 614)

Abstract

Challenges while designing algorithms in fixed WDM are easier than the flexible optical networks. The major challenges in flexible optical networks are in related with physical layer, routing, spectrum allocation (RSA) and dynamic traffic fluctuations. Spectrum allocation policies are used to minimize the cost of transponder and also to utilize spectrum efficiently. Spectrum allocation policies such as constant spectrum allocation (CSA), dynamic high expansion–low contraction (DHL) and dynamic alternate direction (DAD) used to avoid wastage of bandwidth. For these policies, blocking probability, cost of transponders and regenerators required are calculated using MATLAB software.

Keywords

RSA CSA DHL DAD 

References

  1. 1.
    Varvarigos EA, Christodoulopoulos K (2014) Algorithmic challenges in flexible optical networks. In: International conference on computing, networking and communications (ICNC). Invited paperGoogle Scholar
  2. 2.
    Gerstel O et al (2012) Elastic optical networking: a new dawn for the optical layer? IEEE Commun Mag 50(2)CrossRefGoogle Scholar
  3. 3.
    Christodoulopoulos K, Soumplis P, Varvarigos E (2013) Planning flexigrid optical networks under physical layer constraints. J Opt Commun NetwGoogle Scholar
  4. 4.
    Patel AN, Ji PN, Jue JP, Wang T (2012) Routing, wavelength assignment and spectrum allocation algorithms in transparent flexible optical WDM networks. Opt Switch Netw 9(3)CrossRefGoogle Scholar
  5. 5.
    Autenrieth A et al (2013) Evaluation of technology options for software-defined transceivers in fixed WDM grid versus flexible WDM grid optical transport networks. Photon Netw SympGoogle Scholar
  6. 6.
    Christodoulopoulos K, Tomkos I, Varvarigos E (2013) Time-varying spectrum allocation policies and blocking analysis in flexible optical networks. J Select Areas Commun 31(1)CrossRefGoogle Scholar
  7. 7.
    Tomkos I, Azodolmolky S, Sole-Pareta J, Careglio D, Palkopoulou E, A tutorial on the flexible optical networking paradigm: state of the art, trends, and research challengesGoogle Scholar
  8. 8.
    Chatterjee BC, Sarma N, Oki E (2015) Routing and spectrum allocation in elastic optical networks: a tutorial. IEEE Commun Surv Tutor 17(3)CrossRefGoogle Scholar
  9. 9.
    Shen G, Yang Q (2011) From coarse grid to mini-grid to grid-less: how much can grid-less help contention-less? OSA/OFC/NFOECGoogle Scholar
  10. 10.
    Harish Kumara HB, Triveni CL (2016) De-fragmentation for spectrum allocation in a flexible optical networks. In: National conference on emerging trends in electronics and communication (NCETEC-16) on 3–4 May 2016 by Dept of ECE at BGSIT, Bellur, ISBN: 978-93-84698-12-6 (Published in ISRASE eXplore Digital Library)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • M. B. Sumalatha
    • 1
    Email author
  • L. M. Aishwarya
    • 1
  • C. L. Triveni
    • 1
  1. 1.Department of ECEMalnad College of EngineeringHassanIndia

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