Physical layer impairments tolerance based lightpath provision in software defined optical network |
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Authors: | Zhao Xianlong Xu Xianze Bai Huifeng |
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Institution: | 1. School of Electronic Information, Wuhan University, Wuhan 430079, P.R.China;2. Beijing Smartchip Microelectronics Company Limited, Beijing 102200, P.R.China |
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Abstract: | 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 tol-erance 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 in-troduces 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 communica-tion 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 im-pairments 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. |
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Keywords: | OpenFlow physical layer impairments ( PLIs) tolerance model lightpath provi-sion |
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