| 波分复用光传送网中备用选路下的选路和波长分配算法 |
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| 引用本文： | 徐世中,李乐民,王晟.波分复用光传送网中备用选路下的选路和波长分配算法[J].电子学报,2002,30(4):488-491. |
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| 作者姓名： | 徐世中 李乐民 王晟 |
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| 作者单位： | 电子科技大学宽带光纤传输与通信系统技术国家重点实验室,四川成都 610054 |
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| 基金项目： | 国家自然科学基金重大项目“WDM全光网基础研究”(No .69990 540 ) |
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| 摘 要： | 本文研究了动态业务下,波分复用光传送网的选路和波长分配问题,提出了一种基于备用选路的选路和波长分配算法.与文献中已有的利用全网信息的备用选路的算法相比,该算法能更加精确地描述建立光路对全网的影响,选择对网络状态影响最小的路由-波长对来建立光路,促进网络资源的有效利用.计算机仿真表明,不论在规则的格型环网还是非规则的网络中,在阻塞率性能方面,在大多数情况下该算法优于文献中已有的备用选路算法;同时它也能改善公平性.
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| 关 键 词： | 波分复用光传送网 备用选路 选路和波长分配算法 |
| 文章编号： | 0372-2112(2002)04-0488-04 |
| 收稿时间： | 2000-11-01 |
An Alternate Routing Algorithm for WDM Optical Transport Network |
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| XU Shi zhong,LI Le min,WANG Sheng.An Alternate Routing Algorithm for WDM Optical Transport Network[J].Acta Electronica Sinica,2002,30(4):488-491. |
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| Authors: | XU Shi zhong LI Le min WANG Sheng |
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| Affiliation: | National Key Lab of Broadband Optical Fiber Transmission and Communication Networks,UESTC,Chengdu,Sichuan 610054,China |
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| Abstract: | In this paper,an alternate routing algorithm is proposed for the problem of routing and assignment of wavelength in Wavelength Division Multiplexing (WDM) optical transport network.It can more accurately model the state of the whole network after the establishment of new calls than other alternate algorithms proposed before.The route wavelength pair which has the least influence on the state of the whole network is chosen to accommodate the coming call.The algorithm performs better than other alternate routing algorithms in most cases we studied.Fairness is improved significantly too. |
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| Keywords: | WDM optical transport network alternate routing routing and assignment of wavelength |
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