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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 2, Iss. 9 — Sep. 1, 2010
  • pp: 662–677

Static Lightpath Establishment in Multilayer Traffic Engineering Under Physical Layer Impairments

Namik Sengezer and Ezhan Karasan  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 2, Issue 9, pp. 662-677 (2010)
http://dx.doi.org/10.1364/JOCN.2.000662


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Abstract

This paper investigates the lightpath establishment problem in the optical layer, which arises in multilayer traffic engineering. The static version of the problem is considered, in which the set of requested lightpaths is known initially, and the objective is to set up as many of these lightpaths as possible by assigning the physical layer resources efficiently. In establishing the lightpaths, physical layer impairments are also considered, such that the bit error rates of all established lightpaths should remain within acceptable limits. A heuristic algorithm, called ROLE, is proposed for the solution of this problem. An integer linear programming (ILP) formulation for the static lightpath establishment with physical layer impairments is also developed, which considers the aggregated effect of physical layer impairments. This formulation is used as a performance benchmark for ROLE on smaller-size networks. It also provides upper bounds even when the ILP model cannot be solved to optimality. The performance of ROLE is close to the optimum solutions for all studied problem sets, for which the optimum solution can be obtained. ROLE significantly outperforms previously proposed algorithms in terms of the number of lightpaths established. The effect of switch cross-talk ratio on the problem solution is also investigated.

© 2010 Optical Society of America

OCIS Codes
(060.1155) Fiber optics and optical communications : All-optical networks
(060.4251) Fiber optics and optical communications : Networks, assignment and routing algorithms
(060.4264) Fiber optics and optical communications : Networks, wavelength assignment
(060.4265) Fiber optics and optical communications : Networks, wavelength routing

ToC Category:
Research Papers

History
Original Manuscript: December 17, 2009
Revised Manuscript: June 7, 2010
Manuscript Accepted: July 7, 2010
Published: August 9, 2010

Citation
Namik Sengezer and Ezhan Karasan, "Static Lightpath Establishment in Multilayer Traffic Engineering Under Physical Layer Impairments," J. Opt. Commun. Netw. 2, 662-677 (2010)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-2-9-662


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