大规模光网络中的灵活控制系统  

Flexible control system in large-scale optical networks

作　　者：刘汪洋[1] 华楠[1] 郑小平[1] 周炳琨[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《清华大学学报（自然科学版）》2014年第10期1362-1366,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家"九七三"重点基础研究项目(2010CB328203;2010CB328205)

摘　　要：传统光网络中的控制方法严重地依赖于底层硬件资源部署和顶层网络应用需求,不利于在大规模光网络中进行灵活控制。该文引入软件定义网络的设计思想,研究了传统有限状态机中的状态转移规律,提出一种适用于大规模光网络灵活控制的通用可编程有限状态机(pFSM)模型,并基于路径计算单元(PCE)架构设计出一套灵活控制系统。在此基础上搭建了多域异构光网络实验平台,完成了不同交换粒度域内和跨域业务的建立和拆除实验,并对重路由业务的恢复过程进行了实验测试。实验结果表明:该系统可在多域异构光网络环境下实现业务的动态控制和灵活调度功能。Control methods in the traditional optical network heavily rely on the deployment of underlying hardware resources and the requirements of network applications,which hinders the flexible control in large-scale optical networks. The design thought of software defined network was introduced,with the status transition regularity of traditional finite state machines analyzed,and with a common programmable finite state machine（pFSM）model then presented for flexible control in large-scale optical networks.By using pFSM,a flexible control system was designed based on the path computation element（PCE）architecture and a dynamic control experimental platform was constructed for multi-domain heterogeneous optical networks.The platform was used to test intra-domain/interdomain traffic establishment and removal using different switching granularities and different survivability strategies.The results show that the platform provides dynamic controlling and flexible scheduling using the pFSM model in the multi-domain heterogeneous optical network environment.

关 键 词：多域异构光网络 可编程有限状态机 路径计算单元(PCE) 灵活控制系统 实验平台 

分 类 号：TN929.11[电子电信—通信与信息系统]