| 一种基于改进蚁群算法的光网络动态RWA机制 |
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| 引用本文： | 程希,沈建华,杨帆,梁兵,于飞.一种基于改进蚁群算法的光网络动态RWA机制[J].光通信研究,2011(5):1-3. |
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| 作者姓名： | 程希 沈建华 杨帆 梁兵 于飞 |
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| 作者单位： | 南京邮电大学通信与信息工程学院; |
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| 摘 要： | 动态RWA(路由与波长分配)问题是智能光网络的核心问题.文章提出一种解决动态RWA问题的改进蚁群算法,在转移概率中加入了链路的空闲率作为约束条件,同时还引入了随机扰动防止搜索过早收敛于局部最优路径.仿真结果表明,改进算法与传统Dijkstra+ FF(首次命中)算法相比,可以显著降低阻塞率,提高资源利用率.
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| 关 键 词： | 智能光网络 路由与波长分配 蚁群算法 阻塞率 |
An improved ant colony algorithm-based scheme for dynamic routing and wavelength assignment in optical networks |
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| Cheng Xi,Shen Jianhua,Yang Fan,Liang Bing,Yu Fei.An improved ant colony algorithm-based scheme for dynamic routing and wavelength assignment in optical networks[J].Study on Optical Communications,2011(5):1-3. |
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| Authors: | Cheng Xi Shen Jianhua Yang Fan Liang Bing Yu Fei |
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| Affiliation: | Cheng Xi,Shen Jianhua,Yang Fan,Liang Bing,Yu Fei(College of Communication and Information Engineering,Nanjing University of Posts &Telecommunications,Nanjing 210003,China) |
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| Abstract: | Dynamic Routing and Wavelength Assignment(RWA) is a key issue in intelligent optical networks.This paper presents an improved ant colony algorithm to tackle this issue,in which link idleness probability is added to the ant transition probability as a constraint and simultaneously random disturbances are introduced to prevent premature convergence of searches into the optimal local path.Simulation results show that compared with the conventional Dijkstra+FF algorithm,the modified algorithm significantly decr... |
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| Keywords: | intelligent optical network RWA ant colony algorithm blocking probability |
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