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ID:34521491
大小:2.23 MB
页数:45页
时间:2019-03-07
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1、TelecommunicationsinTransitionNBNDevelopmentsEngineering49215–TelecommunicationsIndustryManagementMuratKIVILCIM(UpdatedOct12)muratk@eng.uts.edu.auContentsIntroductionNationalBroadbandNetworkWhyNBNCo?NBNCoAccessProductsTransitiontoNBNEnvironmentBusinessCaseExamplesandRelevantInformationPa
2、ge2IntroductionTherapidriseofallIPnetworksanddecouplingofservice&transportlayersarethekeyenablersforfutureinformationsocietiesbasedonnetworkeconomies.Fixedbroadbandnetworktechnologiesoftoday,namelyxDSL&Cable(HFC)whileadequateforcurrentrequirements,willnotbecapableofmeetingfuturecommunication
3、demands.FibretothePremises(FTTP),FibretotheHome(FTTH)technologiesarerequiredtodeliverhighspeedsymmetricalpervasivebroadbandservicesthusbecomingthefoundationresourceforbroadbandinformationinfrastructurecapableofsupportingnextgenerationservices.InformationSocietiesNetworkEconomiesNextGeneration
4、InternetServicesInformationInfrastructureTelecomInfrastructureBuildingofInformationSocietiesPage3NextGenerationAccessWeareenteringintoaperiodofchangewherethedynamicsofthetelecommunicationsindustry,ormoreaccuratelytheinformationandcommunicationstechnologies,willradicallyandirreversiblychange.
5、NextGenerationAccess(NGA)networksunderpinthischange,andassuchhasbecomethefocusofmanyaGovernment’sfuturepolicyplatforms.Establishmentofahighspeedubiquitousbroadbandaccessnetworksandtheassociatedinvestmentrequirementsarenottrivial.InmostmarketshoweverxDSLandbroadbandservicedeliveredovertheincu
6、mbent’scopperinfrastructurewillcontinuetodominatefortheforeseeablefuturewhilethefibrenetworksbuildmomentum.Thatis,inthenext5-10yearsthesuccessofthenextgenerationaccessnetworkswillbeverymuchdependantonclosecooperationbetween,theGovernments,industryand(inmanymarkets)thethreatenedincumbents.Let
7、snowlookatNGAdevelopmentsinAustraliaPage4Australia–NationalBroadbandNetworkOnApril2009,TheAustralianGovernmentannouncedthatitwouldinvestupto$43bover8yearstobuildandoperateaNationalBroadbandNetwork(NBN)deliveringatleast100Mbit/sto90%ofA
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