| WDM光网络动态组播的共享保护和快速保护 | |
| 于青 ; 葛宁 ; 董在望 ; YU Qing ; GE Ning ; DONG Zai-wang | |
| 2010-06-09 ; 2010-06-09 | |
| 关键词 | 波分复用 组播 共享保护 预配置环 wavelength division multiplexing multicast shared protection preconfigured cycle TN929.1 |
| 其他题名 | Shared Protection and Fast Protection for Dynamic Multicast Sessions in WDM Networks |
| 中文摘要 | 针对波分复用(WDM)光网络中单对光纤链路失效情况,提出基于链路的保护动态组播业务的优化共享保护算法(LB-OSPM)和基于哈密尔顿p-cycle的快速保护算法(HPC).LB-OSPM算法通过引入预留波长使用情况矩阵和波长预留矩阵记录预留波长资源的使用情况,在对工作树任意一对光纤失效情况寻找保护路径时,实现了不同组播树的保护链路间共享预留波长资源.HPC算法选配单个哈密尔顿p-cycle对全网波长链路进行保护,实现保护路径的高度共享,具有高效和快速的优点.研究采用COST239网络拓扑对不同波长资源配置和网络负载情况下2种算法的网络连接阻塞率做了仿真,并与最优路径对共享不相交路径算法(OPP-SDP)进行比较,结果表明2种算法在对单对光纤链路失效保证100%恢复率的同时均可获得更低的连接阻塞率.; Two algorithms are proposed against single span failure in wavelength division multiplexing(WDM) networks.One is called link-based optimized shared-protection algorithm(LB-OSPM).The other is a protection algorithm(HPC)based Hamiltonian preconfigured cycle(p-cycle).LB-OSPM introduces wavelength usage matrix and wavelength reservation matrix to record the detailed usage of wavelengths reserved so as to allow different protection paths of working trees to share reserved wavelengths.HPC takes advantages of single Hamiltonian p-cycle to cover all working links in the network to attain source efficiency and fast protection.The topology of COST239 to calculate the network blocking probability of these two algorithms is used under various conditions of wavelength resources and network loads.And therefore they can be compared with an existing cost-effective algorithm,optimal path-pair-based shared disjoint paths algorithm(OPP-SDP).The simulations demonstrate that with the algorithms lower blocking probability can be gained while assuring a 100% restorability rate in the case of single span failure.; 国家自然科学基金项目(60572006) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/54482]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 于青,葛宁,董在望,等. WDM光网络动态组播的共享保护和快速保护[J],2010, 2010. |
| APA | 于青,葛宁,董在望,YU Qing,GE Ning,&DONG Zai-wang.(2010).WDM光网络动态组播的共享保护和快速保护.. |
| MLA | 于青,et al."WDM光网络动态组播的共享保护和快速保护".(2010). |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论