Document Type

Conference Proceeding




Faculty of Computing, Health and Science


School of Engineering and Mathematics / Centre for Communications Engineering Research




This is an Author's Accepted Manuscript of: Phung, Q., Habibi, D., Nguyen, H. N., & Lo, K. (2006). A segmentation method for shared protection in WDM networks. Proceedings of IEEE International Conference on Networks . (pp. 484-489). Singapore. IEEE. Available here

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Shared link and shared path protections have been recognized as preferred schemes to protect traffic flows against network failures. In recent years, another method referred to as Shared Segment Protection has been studied as an alternative solution for protection. This method is more flexible and efficient in terms of capacity utilization and restoration time. However, to our best knowledge, this method has mostly been studied in dynamic provisioning scenarios in which searching for restoration paths is dynamically performed after a failure has occurred. In this paper, based on the path segmentation idea, we propose a method to generate good candidate routes for traffic demands in static provisioning. These candidates are used as input parameters of an Integer Linear Programming (ILP) model for shared backup protection. Numerical results show that the capacity efficiency resulting from these candidates is much better than the best known Shared Backup Path Protection (SBPP) schemes. In addition, although the restoration time of our scheme is a little bit longer than those implementing link protection, it is still faster than path protection schemes.



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