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Photonic Network Communications

, Volume 29, Issue 1, pp 67–77 | Cite as

Mapping time-varying IP traffic to flexible optical paths in flexgrid optical networks

  • Caglar Tunc
  • Nail Akar
Article

Abstract

A spectrum slot is the frequency range allocated to a single channel within a flexible grid, and its width needs to be an integer multiple of the so-called slot width granularity. The slot width of the spectrum slots to be used for an optical path in flexgrid optical networks can be adjusted in time to align with time-varying client traffic demand for both bandwidth and energy efficiency purposes. However, frequent adjustment of the slot width of optical paths places substantial signaling load on the control plane. In this paper, an online slot width adjustment mechanism is proposed for flexgrid optical networks under slot width update rate constraints in order to maintain the associated signaling load at acceptable levels. Real traffic traces are used to validate the effectiveness of the proposed mechanism.

Keywords

Flexgrid optical networks Dynamic slot width adjustment Elastic spectrum allocation IP over optical architectures  

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Electrical and Electronics Engineering DepartmentBilkent UniversityAnkaraTurkey

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