NGI中反应式一体化容错QoS单播路由机制  

Reactive Fault-Tolerant Integrated QoS Unicast Routing Scheme for NGI

作　　者：王兴伟[1] 蔡淑降[1] 黄敏[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2006年第10期1087-1090,共4页Journal of Northeastern University(Natural Science)

基　　金：新世纪优秀人才支持计划资助项目;国家发改委CNGI示范工程资助项目(CNGI-04-13-2T;CNGI-04-6-2T;CNGI-04-15-7A);国家自然科学基金资助项目(60473089).

摘　　要：在IP/DWDM光Internet中,如何提高其容错能力同时改善其QoS(qualityofservice)是需要解决的主要问题.容错QoS路由是解决该问题的一个有效方法.采用反应式容错策略,基于启发式A算法,设计了一种一体化容错QoS单播路由机制,在寻找路由的同时进行波长分配.该机制以网络延迟、负载、波长转换代价达到平衡的最佳值为目标,兼顾波长资源的高效利用和故障恢复率的提高.仿真研究表明,该机制是可行和有效的.IP over DWDM optical Intemet is one of the main networking techniques for NGI （next generation Internet）, and how to improve its fault-tolerant capability and QoS （quality of service） becomes critical, to which the fault-tolerant QoS muting is one of the effective solutions, A reactive fault-tolerant integrated QoS unicast muting scheme is thus proposed on the basis of heuristic A algorithm to seek for proper routing with wavelength assignment simultaneously. Its objective is trying to offer the best balance among delay, load and the cost of wavelength conversion in addition to improving the effective wavelength utilization and failure restoring rate. Simulation results showed that the proposed scheme is feasible and effective.

关 键 词：下一代互联网(NGI) IP/DWDM光INTERNET 反应式容错 一体化QoS单播路由 启发式A算法 

分 类 号：TP393.14[自动化与计算机技术—计算机应用技术]