(BT英国电信)NGN的发展-技术和管理

1、EvolutionofNextGenerationNetworks(NGN)-TechnologyandRegulatoryIssuesSatyenGuptaChiefRegulatoryAdvisor,SAARCRegion,BTGlobalServicesAgenda•NGN-Introduction•AdvantagesofNGN•NextGenerationNetworkArchitecture•RegulatorychallengesforNGN•PSTNevolutiontoNGN•NGNMigration–BTUKExample•NGN–KeyMessagesNGN-IntroductionNextGenerationNetworksasthenamesuggestsarethenetworksoffuturebasedonemergingtechnologyofIPwhichisleadingtoconvergenceofnetworks,servicesandmarketsandprovidingefficiencyandflexibilityinOperation。

2、.NGNarebasedonthelayeredapproachwhereinservicesprovisionisseparatedfromthenetworkinfrastructure.TheseareenablingtheoperatorstoincreasetheirdepletingARPUbyprovidingmultipleandadvancedvalueaddedservicesinadditiontoplain(vanila)voice.TheincumbentoperatorsaregoingforNGNbyreplacingtheirexistingnetworkstocompeteonthetechnologyfrontandbeingabletoprovidenewvalueaddedservices,cutdownonOpexaswellastomaketheirnetworkfuture-proof.NextGenerationNetwork(NGN)isapacket-basednetworkabletoprovideservicesincluding。

3、TelecommunicationServicesandAbletomakeuseofmultipleBroadband,QoS-enabledtransporttechnologiesinwhichservice-relatedfunctionsareindependentfromunderlyingtransport-relatedtechnologies;Itoffersunrestrictedaccessbyuserstodifferentserviceproviders.Itsupportsgeneralizedmobilitywhichwillallowconsistentandubiquitousprovisionofservicestousers.DefinitionofNextGenerationNetwork(ITU)Broadly,NGNshouldmeetthefollowingtechnicalrequirements:(i)Separationofinfrastructureandservicelayers.(ii)Accesstechnologyagnos。

4、tic.(iii)Supportquad-play(voice,data,video,mobile)services.(iv)OpenStandardArchitecture.(v)IntegratedUsersInterface.(vi)Co-existencewithPSTN.(vii)MeetingQOSstandards.(viii)Compliancetoregulatoryandsecurityconditions.NGN–TechnicalRequirementsAdvantagesofNGNNGNmakesuseofbestofboththeworlds(Flexibility,Efficiency&InnovativenessofIPandQOS,Security,Reliability,Customer-friendlyfeaturesofprovenPSTN.•AdvantagesforserviceprovidersReducedCAPEXduetointegratedandefficientIP-basedtechnology(PacketizeorPeri。

5、sh)ReducedOPEXduetotransmissioncostsaving,lesspowerconsumption,lessspacerequirement,lessO&McostsAbilitytoofferincreasedrangeofservicesMoreflexibilityincreasingmarketpenetrationbyofferingpersonalservicecustomizationandmanagementSinglenetworklayerformanagementNoneedforseparatenetworksforvoice,dataandvideo•AdvantagesforsubscribersReducedcallchargesNewinnovativeservicesatafastspeedSingleconnectionandbillforvoice,data,video,mobile(Quadplay)EmergingNGNServices–EOIPVoiceoverIPUnifiedMessagingBB。

6、-HighSpeedInternetPrimarylineContentDeliverySecondlineGamingIPCentrexusageDownloads(MP3)IPVPN(data)VoiceVPNBWon-demandIPCentrexVideoondemandQOSondemandPCtoPhonePhonetoPCIPTVQuadplay(voice,data,video,mobility)InstantmessagingPresencemanagementMultimediaConferencingLongdistancebypass(DeathofDistance)MMSonfixednetworkLocationBasedServices(LBS)FMC(FixedMobileConvergence)Distancelearning3G&beyondapplicationsFixedMobileConvergence(FMC)FMCisconvergenceofaccessfortelephonywhereinaspertheconvenienceofthe。

7、usersanmobilecallcanbedeliveredonfixedphoneorcanbeterminatedthroughfixedBroadbandnetworkonmobilephone.Mainmotivationforthisis:-1.SpectrumshortageleadingtocongestionandreducedQoS.(Itisbelievedthat70%ofthetimeamobilecallrecipientisonafixedlocation/HotSpot)2.Mobilesubscriberssaturation,Fixedlinesdecline(Battleforin-buildingminutes)3.Broadbandbecomingubiquitousandcosteffective4.The“MobileHandset”isbecomingamulti-purpose,multi-band,palm-heldcomputer5.NGNTechnologiesenablingFMC(IMS,UMA)GatewaysInterne。

8、tWirelessPOTSIntegratedServicesOverIPEvolvingtowardsFlatAllIPCommunicationsNextGenerationNetworks(NGN)PresentDayNetworksNextGenerationNetworks–TechnologicalEvolutionInterfacesSwitchingCallControlApplication&ServiceControlServerIPRoutingGatewaysPSTNSwitchNGNComponentsNGNv/sPSTN-90degreeshiftSDHTransportwithOverlaypacketsfordataCommonIPMPLS/EthernetTransportNGN–alayeredarchitecturedistributingintelligenceateverylayerApplicationLayerControlBearerServiceControlLayerSoftswitchControlIPServiceSwitchin。

9、gApplicationServicesTransportLayer(coreandaccess)PSTNInternetMultiservicePacketSwitchingXXXXXCORENETWORKSXNationalOpticalBroadbandAccessGbEDSLAMACCESSNETWORKRASFrame/ATMWirelessCPEMediaGatewaysMetroOpticalXXXXCoreIP/MPLSNetworksUserSchematicviewofNGNDSLASPNetworkWEBASPNetworkVoDDOCSISIMSMMSGSMWi-FiAccessTransportServicesSIPPSTNPSAP(公共安全回答地点)NetworkE911(紧急求援)Source:ASTAP05/WS-IP&NGN/13NGN-FunctionalPlanesManagementPlaneApplicationPlaneControlPlaneTransportPlaneSCNNextGenerationNetworksfunctionald。

10、ecompositionintofiveplanes.1.Thecontrolplanecontainsthefunctionalityrelatingtothecontrolofthetransportplaneandinter-workingwiththeSCN(CircuitSwitchNetwork).ThecontrolplanearchitectureisintendedtobeIP-accessnetworkindependent.2.ThemanagementplanecontainsthemanagementfunctionalityrelatingtoQoS,Securityandnetworkmanagement.3.Thetransportplanecontainsthefunctionalityrelatingtotheunderlyingpackettransportandservices.4.TheSCNplanecontainsthefunctionalityrelatingtothecircuit-switchednetworks.5.Theapplic。