SD-EON业务安全等级感知的低时延路由频谱分配算法  

Low delay routing spectrum assignment algorithm with service security level awareness in SD-EON

作　　者：陈孝莲 纪元 过烽 郭宏 张杰[2] CHENG Xiaolian;JI Yuan;GUO Feng;GUO Hong;ZHANG Jie(Wuxi Power Supply Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Wuxi Jiangsu 214000,China;State key laboratory of information photonics and optical communications,Beijing University of posts and telecommunications,Beijing 100876,China)

机构地区：[1]国网江苏省电力有限公司无锡供电分公司,江苏无锡214000 [2]北京邮电大学信息光子学与光通信国家重点实验室,北京100876

出　　处：《光通信技术》2021年第5期11-15,共5页Optical Communication Technology

基　　金：国网江苏省电力有限公司科技项目(J2019124)资助;国家自然科学基金重点项目(61831003)资助。

摘　　要：光网络中普遍存在着普通业务和安全业务,为了将安全业务配置到安全链路进行传输,规避普通业务占用安全链路,降低业务请求光路建立时延,提出了业务安全等级感知的低时延路由频谱分配算法。算法将网络物理拓扑分为安全虚拟拓扑和普通虚拟拓扑,充分考虑了业务安全类别和链路差别,通过运用安全虚拟拓扑将安全业务配置到安全链路进行传输,回避Eve窃听到有效的安全业务数据。算法的并行建路策略减少了光路的平均建立时延和业务的阻塞率,通过实验仿真验证了算法的有效性。The common and secure services generally exist in optical networks.For the purpose of configuring the security service to the security links for transmission,avoiding the common services occupying the security spectrum,and reducing the optical connections set-up delay of the service requests,a low delay routing spectrum assignment algorithm with service security level awareness is proposed.The algorithm divides the network physical topology into security virtual topology and common virtual topology.The service security category and link difference are fully considered.By using the security virtual topology,the security service is configured to the security link for transmission,avoiding Eve eavesdropping the effective security service data.The parallel routing strategy of the algorithm reduces the average set-up delay of the optical connections and the blocking rate of the services,and the effectiveness is verified by experimental simulation.

关 键 词：低时延 路由频谱分配 安全业务 虚拟拓扑 

分 类 号：TN929.1[电子电信—通信与信息系统]