Shared path protection with differentiated reliability
Shared path protection with differentiated reliability
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DOI：
10.1109/icc.2002.997229
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发表时间：
2002-08
期刊：
影响因子：
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通讯作者：
A. Fumagalli;M. Tacca;F. Unghváry;A. Faragó
中科院分区：
文献类型：
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作者：
A. Fumagalli;M. Tacca;F. Unghváry;A. Faragó
作者（Fumagalli 和 Tacca (2001)）介绍了应用于波分复用 (WDM) 环中专用路径保护 (DPP) 交换的差分可靠性 (DiR) 概念。借助 DiR 概念，网络可以设计为提供多种可靠性并有效满足用户特定要求，同时最大限度地降低网络总成本。本文将 DiR 概念扩展到任意（网状）拓扑中的共享路径保护 (SPP) 切换的情况，即所谓的 SPP-DiR。提出了一种时间高效的算法来确定传统 SPP 和 SPP-DiR (WDM) 网络中每个需求的主路径和备份路径。与 DPP 相比，使用所提出的算法为泛欧网络获得的结果表明，应用 SPP 时成本降低约 16%，应用 SPP-DiR 时成本降低高达 34%。
The authors (Fumagalli and Tacca (2001)) introduced the concept of differentiated reliability (DiR) applied to dedicated path protection (DPP) switching in wavelength division multiplexing (WDM) rings. By means of the DiR concept, a network can be designed to provide multiple degrees of reliability and efficiently satisfy the user-specific requirements, yet minimizing the network total cost. This paper extends the DiR concept to the case of shared path protection (SPP) switching in arbitrary (mesh) topology, the so called SPP-DiR. A time efficient algorithm is proposed to determine the primary and backup path of each demand in both conventional SPP and SPP-DiR (WDM) networks. When compared to DPP, results obtained for the pan-European network by using the proposed algorithm indicate cost reductions of about 16% when SPP is applied, and up to 34% when SPP-DiR is applied.