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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 2 — Jan. 28, 2013
  • pp: 1353–1363

Path connectivity based spectral defragmentation in flexible bandwidth networks

Ying Wang, Jie Zhang, Yongli Zhao, Jiawei Zhang, Jie Zhao, Xinbo Wang, and Wanyi Gu  »View Author Affiliations


Optics Express, Vol. 21, Issue 2, pp. 1353-1363 (2013)
http://dx.doi.org/10.1364/OE.21.001353


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Abstract

Optical networks with flexible bandwidth provisioning have become a very promising networking architecture. It enables efficient resource utilization and supports heterogeneous bandwidth demands. In this paper, two novel spectrum defragmentation approaches, i.e. Maximum Path Connectivity (MPC) algorithm and Path Connectivity Triggering (PCT) algorithm, are proposed based on the notion of Path Connectivity, which is defined to represent the maximum variation of node switching ability along the path in flexible bandwidth networks. A cost-performance-ratio based profitability model is given to denote the prons and cons of spectrum defragmentation. We compare these two proposed algorithms with non-defragmentation algorithm in terms of blocking probability. Then we analyze the differences of defragmentation profitability between MPC and PCT algorithms.

© 2013 OSA

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Backbone and Core Networks

History
Original Manuscript: October 1, 2012
Revised Manuscript: November 13, 2012
Manuscript Accepted: November 21, 2012
Published: January 14, 2013

Virtual Issues
European Conference on Optical Communication 2012 (2012) Optics Express

Citation
Ying Wang, Jie Zhang, Yongli Zhao, Jiawei Zhang, Jie Zhao, Xinbo Wang, and Wanyi Gu, "Path connectivity based spectral defragmentation in flexible bandwidth networks," Opt. Express 21, 1353-1363 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-2-1353


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