The rapid growth of IP traffic has contributed to wide deployment of optical devices in elastic optical network.However,the passband shape of wavelength selective switches(WSSs)that are used in reconfigurable optical ...The rapid growth of IP traffic has contributed to wide deployment of optical devices in elastic optical network.However,the passband shape of wavelength selective switches(WSSs)that are used in reconfigurable optical add-drop multiplexer(ROADM)/optical cross connect(OXC)is not ideal,causing the narrowing of spectrum.Spectral narrowing will lead to signal impairment.Therefore,guard-bands need to be inserted between adjacent paths which will cause the waste of resources.In this paper,we propose a service-based intelligent aggregation node selection and area division(ANS-AD)algorithm.For the rationality of the aggregation node selection,the ANS-AD algorithm chooses the aggregation nodes according to historical traffic information based on big data analysis.Then the ANS-AD algorithm divides the topology into areas according to the result of the aggregation node selection.Based on the ANS-AD algorithm,we propose a time-domain and spectral-domain flow aggregation(TS-FA)algorithm.For the purpose of reducing resources'waste,the TS-FA algorithm attempts to reduce the insertion of guard-bands by time-domain and spectral-domain flow aggregation.Moreover,we design a time-domain and spectral-domain flow aggregation module on software defined optical network(SDON)architecture.Finally,a simulation is designed to evaluate the performance of the proposed algorithms and the results show that our proposed algorithms can effectively reduce the resource waste.展开更多
随着通信技术的不断升级和高速带宽技术的持续发展,人们对光纤通信的功能要求越来越高,在确保其具备扩展性、灵活性特征的基础上,能够实现超高速、大容量传送功能,同时还要实现向智能化的转变。通过概述大数据技术与软件定义网络(Softwa...随着通信技术的不断升级和高速带宽技术的持续发展,人们对光纤通信的功能要求越来越高,在确保其具备扩展性、灵活性特征的基础上,能够实现超高速、大容量传送功能,同时还要实现向智能化的转变。通过概述大数据技术与软件定义网络(Software Defined Network,SDN)技术,分析光纤通信网络的现状及其在大数据背景下的发展趋势,对由SDN发展而来的软件定义光网络(Software Defined Optical Networks,SDON)技术在光纤通信领域的应用进行探讨,从而为光纤通信领域的长久发展奠定基础。展开更多
基金funded by ZTE Industry-Academia-Research Cooperation Funds under Grant No.2017110031005226
文摘The rapid growth of IP traffic has contributed to wide deployment of optical devices in elastic optical network.However,the passband shape of wavelength selective switches(WSSs)that are used in reconfigurable optical add-drop multiplexer(ROADM)/optical cross connect(OXC)is not ideal,causing the narrowing of spectrum.Spectral narrowing will lead to signal impairment.Therefore,guard-bands need to be inserted between adjacent paths which will cause the waste of resources.In this paper,we propose a service-based intelligent aggregation node selection and area division(ANS-AD)algorithm.For the rationality of the aggregation node selection,the ANS-AD algorithm chooses the aggregation nodes according to historical traffic information based on big data analysis.Then the ANS-AD algorithm divides the topology into areas according to the result of the aggregation node selection.Based on the ANS-AD algorithm,we propose a time-domain and spectral-domain flow aggregation(TS-FA)algorithm.For the purpose of reducing resources'waste,the TS-FA algorithm attempts to reduce the insertion of guard-bands by time-domain and spectral-domain flow aggregation.Moreover,we design a time-domain and spectral-domain flow aggregation module on software defined optical network(SDON)architecture.Finally,a simulation is designed to evaluate the performance of the proposed algorithms and the results show that our proposed algorithms can effectively reduce the resource waste.
文摘随着通信技术的不断升级和高速带宽技术的持续发展,人们对光纤通信的功能要求越来越高,在确保其具备扩展性、灵活性特征的基础上,能够实现超高速、大容量传送功能,同时还要实现向智能化的转变。通过概述大数据技术与软件定义网络(Software Defined Network,SDN)技术,分析光纤通信网络的现状及其在大数据背景下的发展趋势,对由SDN发展而来的软件定义光网络(Software Defined Optical Networks,SDON)技术在光纤通信领域的应用进行探讨,从而为光纤通信领域的长久发展奠定基础。
