Shared-path protection algorithm with differentiated reliability in meshed WDM  networks

Hongfang Yu; Haibo Wen; Sheng Wang; Lemin Li; Bing Xiang

doi:10.1117/12.518441

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15 April 2004 Shared-path protection algorithm with differentiated reliability in meshed WDM networks

Hongfang Yu, Haibo Wen, Sheng Wang, Lemin Li, Bing Xiang

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Proceedings Volume 5282, Network Architectures, Management, and Applications; (2004) https://doi.org/10.1117/12.518441
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

Abstract

Optical fiber links, due to sharing some common physical resources, e.g., fiber cable, conduit and Right of Way, have certain failure-dependent. The term "Shared Risk Link Groups (SRLG)" is introduced to describe the relationship between links with shared risk; SRLG diversity has become the important constraint of protection design problem. This paper addresses SRLG-constraint-based shared-path protection design problem with differentiated reliability. Via SRLG conditional failure probability concept, we propose an efficient PSD-SPP (Partial SRLG-disjoint Shared-Path Protection) algorithm to solve the protection design problem with differentiated reliability under the consideration of links failure-dependence. Simulation result shows that this algorithm not only efficiently satisfies the user-specific requirement, but also effectively decreases the network-blocking ratio.

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Hongfang Yu, Haibo Wen, Sheng Wang, Lemin Li, and Bing Xiang "Shared-path protection algorithm with differentiated reliability in meshed WDM networks", Proc. SPIE 5282, Network Architectures, Management, and Applications, (15 April 2004); https://doi.org/10.1117/12.518441

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