新型ICT网络中的一种动态路由波长分配算法  

A dynamic routing and wavelength assignment algorithm in novel ICT networks

作　　者：吴润泽[1] 汪波涛[1] 唐良瑞[1] 王一蓉[2] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]国网信息通信有限公司,北京100872

出　　处：《电力系统保护与控制》2010年第22期48-51,共4页Power System Protection and Control

基　　金：中央高校基本科研业务专项资金;国家电网科技部项目

摘　　要：根据新一代电力ICT网络模型的要求,对智能光网络技术的动态路由和波长分配策略及其对ICT网络性能的影响进行了研究,提出了基于分层图模型的动态路由选择和波长分配优化算法。在不设定备用路由的情况下,以网络链路上的可用光通道数作为链路代价,综合考虑路由跳数,把连接请求建立在优化可用信道数和跳数选择的光通道上,从而使网络负载平衡的同时,尽可能减少网络资源的占用。仿真结果表明,所提算法能有效地降低网络阻塞率,性能优于分别求解两个子问题的传统路由和波长分配算法。According to the requirements of novel electric information and communication network, dynamic routing and wavelength assignment strategy with its effect on ICT network performance is addressed, and a heuristic algorithm based on hierarchy graph model is proposed to solve the dynamic centralized routing and wavelength assignment problem. Without rerouting, selecting available light channel count integrating with hop number as the link optimizing goal, the connection request is established on the lightpath with most available channel number and less hop number, so as to achieve load balance and reduce the occupation of network resource as less as possible. Simulating results show that the algorithm performs better than the other existing algorithms from the viewing of decreasing blocking probability.

关 键 词：电力信息通信网 波分复用 动态路由 分层模型 阻塞率 

分 类 号：TN915.853[电子电信—通信与信息系统]