Comparison of wavelength reusability based on rerouting and reconfiguration in wavelength-routed optical networks

The efficiency of wavelength utilization of two failure protection methods in wavelength-routed optical networks: rerouting and reconfiguration, is investigated. Wavelength reusability /spl rho/, is introduced as an evaluation criteria. Routing and wavelength assignment (RWA) problem for failure protection is formulated as integer linear programming (ILP) equations, heuristic algorithms are also developed and detailed numerical results are presented and discussed.

[1]  A. Narula-Tam,et al.  Designing survivable networks using effective routing and wavelength assignment (RWA) , 2001, OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171).

[2]  Alberto Leon-Garcia,et al.  Communication Networks , 2000 .

[3]  Piet Demeester,et al.  The merit of shared and dedicated protection WDM rings in a hybrid network design , 2000, Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079).

[4]  David Eppstein,et al.  Finding the k Shortest Paths , 1999, SIAM J. Comput..

[5]  Biswanath Mukherjee,et al.  WDM optical communication networks: progress and challenges , 2000, IEEE Journal on Selected Areas in Communications.

[6]  S. Ramamurthy,et al.  Survivable WDM Mesh Networks, Part II-Restoration , 1999 .

[7]  Biswanath Mukherjee,et al.  Survivable WDM mesh networks. Part I-Protection , 1999, IEEE INFOCOM '99. Conference on Computer Communications. Proceedings. Eighteenth Annual Joint Conference of the IEEE Computer and Communications Societies. The Future is Now (Cat. No.99CH36320).

[8]  Izhak Rubin,et al.  Failure protection methods for optical meshed-ring communications networks , 2000, IEEE Journal on Selected Areas in Communications.

[9]  Cheng Yang,et al.  Wavelength reusability in wavelength-routed optical networks , 2000, Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079).