混合线路速率的半透明光网络中感知光路传输质量(QoT)的流量疏导、路由与波长分配(GRWA)方法(英文)

查看全文 作　　者：[1]赵桔子;Suresh [1]Subramaniam;Maté Brandt-[2]Pearce 机构地区：[1]Department of Electrical and Computer Science, The George Washington University;[2]Charles L. Brown Department of Electrical and Computer Engineering, University of Virginia 出　　处：《China Communications》索引2013年第10卷第1期,共14页 基　　金：supported in part by National Science Foundation (NSF) under Grants No. CNS-0915795 and No.CNS-0916890 摘　　要：A Mixed Line Rate(MLR)optical network is a good candidate for a core backbone network because of its ability to provide diverse line rates to effectively accommodate traffic demands with heterogeneous bandwidth requirements.Because of the deleterious effects of physical impairments,there is a maximum transmission reach for optical signals before they have to be regenerated.Being expensive devices,regenerators are expected to be sparsely located and used in such a network,called a translucent optical network.In this paper,we consider the Grooming,Routing,and Wavelength Assignment(GRWA)problem so that the Quality of Transmission(QoT)for connections is satisfied,and the network-level performance metric of blocking probability is minimized.Cross-layer heuristics to effectively allocate the sparse regenerators in MLR networks are developed,and extensive simulation results are presented to demonstrate their effectiveness. 关 键 词：路由和波长分配 线路速率 光网络 半透明 美容 混合 光学信号 稀疏分布