Adaptive elastic spectrum allocation based on traffic fluctuation estimate under time-varying traffic in flexible OFDM-based optical networks

Mirai Chino, Misato Kamio, Jun Matsumoto, Eiji Oki, Satoru Okamoto, Naoaki Yamanaka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A flexible orthogonal frequency-division multiplexing op- tical network enables the bandwidth to be flexibly changed by changing the number of sub-carriers. We assume that users request to dynamically change the number of sub-carriers. Dynamic bandwidth changes allow the network resources to be used more efficiently but each change takes a signif- icant amount of time to complete. Service centric resource allocation must be considered in terms of the waiting time needed to change the number of sub-carriers. If the user demands drastically increase such as just after a disaster, the waiting time due to a chain-change of bandwidth becomes ex- cessive because disaster priority telephone services are time-critical. This paper proposes a Grouped-elastic spectrum allocation scheme to satisfy the tolerable waiting time of the service in an optical fiber link. Spectra are grouped to restrict a waiting time in the proposed scheme. In addition, the proposed scheme determines a bandwidth margin between neighbor spectra to spectra to prevent frequent reallocation by estimating real traffic behavior in each group. Numerical results show that the bandwidth requirements can be minimized while satisfying the waiting time constraints. Additionally measurement granularity and channel alignment are discussed.

Original languageEnglish
Pages (from-to)962-973
Number of pages12
JournalIEICE Transactions on Communications
VolumeE100B
Issue number6
DOIs
Publication statusPublished - 2017 Jun 1

Fingerprint

Fiber optic networks
Orthogonal frequency division multiplexing
Bandwidth
Disasters
Telephone
Resource allocation
Optical fibers

Keywords

  • Elastic optical networks
  • Optical OFDM
  • Spectrum allocation
  • Spectrum sharing
  • Time-varying traffic

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Adaptive elastic spectrum allocation based on traffic fluctuation estimate under time-varying traffic in flexible OFDM-based optical networks. / Chino, Mirai; Kamio, Misato; Matsumoto, Jun; Oki, Eiji; Okamoto, Satoru; Yamanaka, Naoaki.

In: IEICE Transactions on Communications, Vol. E100B, No. 6, 01.06.2017, p. 962-973.

Research output: Contribution to journalArticle

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