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Performance evaluation of non-hitless spectrum defragmentation algorithms in elastic optical networks

Sergio Fernández-Martínez,D. Pinto

Published 2017 in Latin American Computing Conference / Conferencia Latinoamericana En Informatica

ABSTRACT

Fragmentation in Elastic Optical Networks is an issue caused by isolated, non-aligned, and non-contiguous frequency slots that can not be used to allocate new connection request to the network, due to the optical layer restrictions imposed to the Routing and Spectrum Assignment (RSA) algorithms. To deal with this issue, several studies about Spectrum Defragmentation have been presented. In this work, we analyze the most important Non-Hitless Defragmentation Algorithms found in the literature, with proactive and reactive approaches that include rerouting and non-rerouting schemes, and compare their performance in terms of Blocking Probability, Entropy, and Bandwidth Fragmentation Ratio. Simulations results showed that the Fragmentation Aware schemes outperformed the other algorithms in low traffic load, but the Reactive schemes got better results in high traffic load.

PUBLICATION RECORD

  • Publication year

    2017

  • Venue

    Latin American Computing Conference / Conferencia Latinoamericana En Informatica

  • Publication date

    Unknown publication date

  • Fields of study

    Computer Science, Engineering

  • Identifiers
    DOI 10.1109/CLEI.2017.8226459
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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