Models of Restoration Probability in WDM Networks Employing Active Restoration

The ever-increasing demand for network bandwidth makes network survivability an issue of great concern. Lightpath restoration is a valuable approach to guaranteeing an acceptable level of survivability in WDM optical networks with better resource utilization than that of its protection counterpart. Active restoration (AR) is a newly proposed lightpath restoration scheme [M. Mostafa et al. OSA Journal of Optical Networking, vol. 3, no. 4, pp. 247–260] that combines the best of protection and reactive restoration while avoiding their shortcomings. In this paper, we conduct detailed performance analysis on the restoration probability of AR-based WDM networks. In particular, analytical models of restoration probability are developed respectively for networks with full-wavelength conversion capability and for networks without wavelength conversion capability under different backup path searching schemes. Based on the new models, we investigate the effects of wavelength availability, wavelength conversion capability, path length as well as backup path seeking methods on the restoration probability.

[1]  Imrich Chlamtac,et al.  Intermediate-node initiated reservation (IIR): a new signaling scheme for wavelength-routed networks with sparse conversion , 2003, IEEE International Conference on Communications, 2003. ICC '03..

[2]  Kumar N. Sivarajan,et al.  Blocking in all-optical networks , 2004, IEEE/ACM Transactions on Networking.

[3]  C. Y. Lee.  Analysis of switching networks , 1955 .

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

[5]  Kumar N. Sivarajan,et al.  Routing and wavelength assignment in all-optical networks , 1995, TNET.

[6]  Imrich Chlamtac,et al.  Blocking analysis of dynamic lightpath establishment in wavelength-routed networks , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[7]  Ling Li,et al.  A new analytical model for multifiber WDM networks , 2000, IEEE Journal on Selected Areas in Communications.

[8]  Suresh Subramaniam,et al.  Survivability in optical networks , 2000, IEEE Netw..

[9]  Joseph Yu Hui,et al.  Switching and Traffic Theory for Integrated Broadband Networks , 1990 .

[10]  Pin-Han Ho,et al.  A framework for service-guaranteed shared protection in WDM mesh networks , 2002, IEEE Commun. Mag..

[11]  Kumar N. Sivarajan,et al.  Computing approximate blocking probabilities in wavelength routed all-optical networks with limited-range wavelength conversion , 2000, IEEE Journal on Selected Areas in Communications.

[12]  Pin-Han Ho,et al.  Active light-path restoration in WDM networks [Invited] , 2004 .

[13]  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).

[14]  P. Humblet,et al.  Models of blocking probability in all-optical networks with and without wavelength changers , 1995, Proceedings of INFOCOM'95.

[15]  Wayne D. Grover,et al.  New options and insights for survivable transport networks , 2002, IEEE Commun. Mag..

[16]  Mario Martinelli,et al.  Optical Network Survivability: Protection Techniques in the WDM Layer , 2002, Photonic Network Communications.

[17]  Ramesh Bhandari.  Survivable Networks: Algorithms for Diverse Routing , 1998 .

[18]  B. Hannaford,et al.  Virtual Coupling Schemes for Position Coherency in Networked Haptic Environments , 2006, The First IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics, 2006. BioRob 2006..

[19]  Biswanath Mukherjee,et al.  Survivable WDM mesh networks , 2003 .

[20]  Gurusamy Mohan,et al.  Lightpath restoration in WDM optical networks , 2000, IEEE Netw..