NGN网管系统设计及其相关模型的研究的中期报告此处提供英文版的中期报告：Mid-termReportontheDesignofNGNNetworkManagementSystemandRelatedModelsIntroduction:TheNGN(NextGenerationNetwork)isanewgenerationofnetworkcommunicationtechnologythatintegratesvarioustypesofcommunicationtechnologiessuchasvoice,data,andvideo.Comparedwithtraditionalcommunicationnetworks,NGNhasrichservicefunctions,hightransmissionspeed,andbetterqualityofservice(QoS).However,themanagementofNGNnetworksismuchmorecomplexandchallengingduetothediversityofservicesandtechnologiesinvolved.Therefore,thedesignofanefficientandreliablenetworkmanagementsystem(NMS)iscriticaltothesuccessofNGNdeployment.Objectives:ThemainobjectiveofthisresearchistodesignacomprehensiveNGNNMSthatcanhandlethemanagementofacomplexNGNsystem.Specifically,theresearchaimstoachievethefollowingobjectives:1.AnalyzetherequirementsandchallengesofNGNnetworkmanagement.2.StudyandproposeaconceptualframeworkfortheNGNNMS.3.DevelopandimplementthemodelsandalgorithmsfortheNGNNMS.4.ValidatetheeffectivenessandefficiencyoftheproposedNGNNMS.Progress:Todate,thefollowingprogresshasbeenmade:1.AcomprehensiveliteraturereviewhasbeenconductedtoanalyzetherequirementsandchallengesofNGNnetworkmanagement.Basedonthisanalysis,aconceptualframeworkfortheNGNNMShasbeenproposed.2.Theconceptualframeworkconsistsofthreelayers:theBusinessLayer,theServiceManagementLayer,andtheNetworkManagementLayer.TheBusinessLayerisresponsibleformanagingtheoverallbusinessactivitiesoftheNGNserviceprovider.TheServiceManagementLayerisresponsibleformanagingtheNGNservices,whiletheNetworkManagementLayerisresponsibleformanagingtheNGNnetworkinfrastructure.3.SeveralmodelsandalgorithmshavebeendevelopedfortheNGNNMS,includingtheServiceLevelAgreement(SLA)model,theQualityofExperience(QoE)model,theResourceAllocationmodel,andtheFaultManagementmodel.4.TheeffectivenessandefficiencyoftheproposedNGNNMShavebeenvalidatedthroughsimulationsandexperiments.TheresultsshowthattheproposedNGNNMScaneffectivelymanageacomplexNGNsystemandimprovetheQoSo