Physical layer impairments tolerance based lightpath provision in software defined optical network  

作　　者：赵羡龙 Xu Xianze Bai Huifeng 

机构地区：[1]School of Electronic Information, Wuhan University, Wuhan 430079, P. R. China [2]Beijing Smartchip Microelectronics Company Limited, Beijing 102200, P. R. China

出　　处：《High Technology Letters》2017年第3期260-265,共6页高技术通讯（英文版）

基　　金：Supported by the National High Technology Research and Development Programme of China(No.2012AA050804)

摘　　要：As all-optical networks grow with ever increasing ultra-high speed,the communication quality suffers seriously from physical layer impairments( PLIs). The same problem still exists in software defined optical network( SDON) controlled by OpenFlow. Aimed to solve this problem,a PLIs tolerance based lightpath provision scheme is proposed for OpenFlow controlled optical networks. This proposed approach not only takes the OSNR model to represent those linear PLIs factors,but also introduces those nonlinear factors into the OSNR model. Thus,the proposed scheme is able to cover most PLIs factors of each optical link and conduct optical lightpath provison with better communication quality. Moreover,PLIs tolerance model is also set up and considered in this work with some necessary extension to OpenFlow protocols to achieve better compatibility between physical layer impairments factors and various services connections. Simulation results show that the proposed scheme is able to get better performance in terms of packet loss rate and connection setup time.As all-optical networks grow with ever increasing ultra-high speed,the communication quality suffers seriously from physical layer impairments（ PLIs）. The same problem still exists in software defined optical network（ SDON） controlled by OpenFlow. Aimed to solve this problem,a PLIs tolerance based lightpath provision scheme is proposed for OpenFlow controlled optical networks. This proposed approach not only takes the OSNR model to represent those linear PLIs factors,but also introduces those nonlinear factors into the OSNR model. Thus,the proposed scheme is able to cover most PLIs factors of each optical link and conduct optical lightpath provison with better communication quality. Moreover,PLIs tolerance model is also set up and considered in this work with some necessary extension to OpenFlow protocols to achieve better compatibility between physical layer impairments factors and various services connections. Simulation results show that the proposed scheme is able to get better performance in terms of packet loss rate and connection setup time.

关 键 词：OpenFlow physical layer impairments（PLIs） tolerance model lightpath provision 

分 类 号：TN929.1[电子电信—通信与信息系统] TP333.35[电子电信—信息与通信工程]