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

Mirai Chino, Takahiro Miyazaki, Eiji Oki, Satoru Okamoto, Naoaki Yamanaka

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

A flexible orthogonal frequency-division multiplexing optical network enables to change bandwidth flexibly by changing the number of sub-carriers. We consider that users request to dynamically change the number of sub-carriers. In this context, the network resources can be used more efficiently. The dynamic bandwidth change needs a certain time. Service centric resource allocation must be considered in terms of waiting time to change the number of sub-carriers. If the user demands drastically increase such as a disaster priority telephone service, a waiting time for bandwidth changes is not tolerated because emergency is time-critical. This is caused by a chain-change of bandwidth such as a multiple-car pileup. This paper proposes a grouped elastic spectrum allocation scheme to satisfy the tolerable waiting time of the service in an optical fiber link. Spectrums are grouped to restrict a waiting time in the proposed scheme. In addition, the proposed scheme determines a margin bandwidth with neighbor spectrums to prevent frequent reallocation by estimating real traffic behavior. Numerical results show that a required bandwidth can be saved with satisfying waiting time constraints. Additionally measurement granularity is discussed.

本文言語English
ホスト出版物のタイトル2016 IEEE 17th International Conference on High Performance Switching and Routing, HPSR 2016
出版社IEEE Computer Society
ページ81-86
ページ数6
2016-July
ISBN(電子版)9781479989508
DOI
出版ステータスPublished - 2016 7 28
イベント17th IEEE International Conference on High Performance Switching and Routing, HPSR 2016 - Yokohama, Japan
継続期間: 2016 6 142016 6 17

Other

Other17th IEEE International Conference on High Performance Switching and Routing, HPSR 2016
CountryJapan
CityYokohama
Period16/6/1416/6/17

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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