IPover WDM网中的综合选路算法  

Integrated Routing Algorithms in IP over WDM Networks

作　　者：何荣希[1] 温海波[2] 王光兴[1] 李乐民[2] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004 [2]电子科技大学宽带光纤传输与通信系统技术重点实验室,四川成都610054

出　　处：《光电子．激光》2004年第3期322-327,共6页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60002004);教育部科学技术研究重点资助项目(02064);中国博士后科学基金资助项目(2003033031)

摘　　要：研究了IPoverWDM网中,当节点不具备波长变换能力并且配备有限光收发器对时,如何利用综合选路(IR)算法为到达业务请求建立标签交换路径(LSP)。提出一种新颖的辅助图模型(AGM)表示网络的当前状态,基于AGM提出一种动态IR算法—最小光收发器对法(MTA)。MTA总是选择占用光收发器对最少的通路来建立LSP。仿真结果表明:与已有算法相比,MTA可以降低全网的阻塞率,从而提高业务通过率,并且有利于减少业务连接所经光/电变换的次数。Under the constraints of the number of transceivers per node and wavelength continuity, the integrated routing (IR) in IP over WDM networks was investigated. A novel auxiliary graph model (AGM) was proposed to represent current state of the network. Based on AGM, an efficient dynamic 1R scheme, minimal transceiver approach (MTA), was developed. It always routes an arriving connection request over the path with the least number of transceivers used by newly created lightpaths. The simulation results show that MTA can improve the blocking probability and the traffic throughput considerably compared to the existing methods. And MTA results in lesser number of O-E-O conversions are in favor of QoS.

关 键 词：IP over WDM网 选路算法 通用多协议标签交换 GMPLS 光网络 光交叉连接设备 

分 类 号：TN929.11[电子电信—通信与信息系统]