| 抗毁网状WDM网络中的光纤级P-Cycles优化设计 |
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| 引用本文： | 虞红芳,吴冬凌,李乐民,林然,陈天罡.抗毁网状WDM网络中的光纤级P-Cycles优化设计[J].电子科技大学学报(社会科学版),2007(2). |
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| 作者姓名： | 虞红芳 吴冬凌 李乐民 林然 陈天罡 |
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| 作者单位： | 电子科技大学宽带光纤传输与通信网技术教育部重点实验室 成都610054(虞红芳，吴冬凌，李乐民)，中国网络通信集团公司四川省分公司 成都610041(林然，陈天罡) |
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| 基金项目： | 国家自然科学基金资助项目(60302010)，国家973资助项目(2007CB307104) |
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| 摘 要： | 为降低保护切换代价和提高故障恢复时间,提出了以光纤级P-Cycle来实现网络保护;研究了工作路由与光纤级P-Cycle放置联合优化的设计问题,给出了ILP数学模型。为降低计算的复杂度,采用了一种简单有效的方法:根据跳数预先选择工作路由候选集及环的有效性和长度预先选择P-Cycle候选集。仿真结果表明光纤级P-Cycle设计相比于波长级P-Cycle设计保护切换代价大大降低。
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| 关 键 词： | 光纤级P-Cycle 联合优化 预先选择 保护切换代价 |
Fiber-Level P-Cycles Optimal Design for Survivable Mesh WDM Networks |
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| YU Hong-fang,WU Dong-ling,LI Le-min,LIN Ran,CHEN Tian-gang.Fiber-Level P-Cycles Optimal Design for Survivable Mesh WDM Networks[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2007(2). |
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| Authors: | YU Hong-fang WU Dong-ling LI Le-min LIN Ran CHEN Tian-gang |
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| Institution: | YU Hong-fang1,WU Dong-ling1,LI Le-min1,LIN Ran2,CHEN Tian-gang2 |
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| Abstract: | To reduce the protection-switching cost and failure recovery time, the fiber-level P-Cycles is presented to realize network protection. The issue about the joint optimization design of the working path routes with fiber-level P-Cycle placement is further studied; and an improved ILP formulation is developed. To reduce the complexity of joint optimization problem, the simple process of pre-selecting candidate P-Cycles by the efficiency and length metric and candidate working path routes by the hop metric is used. By simulation analysis, the fiber-level P-Cycles scheme efficiently decreases the switching cost compared with the wavelength-level P-Cycles. |
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| Keywords: | fiber-level P-Cycle joint optimization pre-selecting protection switching cost |
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