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Shared p-cycles design for dual link failure restorability in optical WDM networks 被引量:1
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作者 XIE Zheng-cheng XING Jun-wei WU Li JI Yue-feng 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2007年第3期74-78,共5页
Pre-configured cycles (p-cycles) can attain high capacity efficiency and fast protection switching times in wavelength division multiplexing (WDM) networks. This article proposes the weighted straddling link algor... Pre-configured cycles (p-cycles) can attain high capacity efficiency and fast protection switching times in wavelength division multiplexing (WDM) networks. This article proposes the weighted straddling link algorithm(WSLA) for generating a subset of all cycles that can guarantee 100% restorability in case of dual link failure, and give an integer linear programming(1LP) formulation that solves the shared p-cycles design problem minimizing the total spare capacities. Numerical result shows that our method can achieve 100% dual link failure restorability with acceptable spare capacity. The larger standard deviation of demand set and the larger node degree network, the better the shared p-cycles scheme performs. 展开更多
关键词 dual link failure P-CYCLES WDM
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