OTN原理及关键技术PPT文档格式.ppt

OTN原理及关键技术PPT文档格式.ppt

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PrincipleandKeyTechnologiesofOTNPage2Chapter1BackgroundandConceptofOTNContentsContentsChapter2HierarchyofOTNChapter3G.709IntroductionChapter4OTNkeyTechnologiesChapter5ReviewandOutlookPage3Chapter1Background&@#@ConceptofOTNSection1:

@#@BackgroundofOTNContentsContentsInthenext3to5years,newbusinessdevelopmentwilldriverapidgrowthinbusinessvolume.Rapidgrowthofnewbusinessbasedbroadbandservicesoflargeparticles.Alargenumberbroadbandservicesoflargeparticlesrequireeffectiveschedulingandmanagement,improvingtheQoS,tomeettheneedsofnetworkoperators.InternetAccessresidential31%BBAccInternet11%Privatelines25%VideoDistribution27%Voice（Fixed+Mobile）4%NetworkDevelopmentunderIP-driventrendBroadbandbusinessisboomingwhichproposednewrequirementsonthetransmissionnetwork!

@#@DataServices（ATM/FR,VPN）2%Page4PDHSDH?

@#@TheRoadofTransportNetworkTechnologyEvolutionPage5AnalysisofthedifferentTransmissionTechnologyPDHSDHWDMPDH:

@#@Quasi-synchronousdigitalhierarchy，ithavebetteradaptabilityforpointtopointcommunication.However,PDHnetworklackofmanagementcapacity.SDH：

@#@synchronousdigitalhierarchy.Ithasmanyadvantages,suchasstandardopticalinterface,apowerfulnetworkmanagementcapabilities.However,itcannotprovideuslarge-capacityandhigh-speed.WDM：

@#@Largebandwidth,lowtransmissioncosts,adaptingtohigh-speedlarge-capacitytransmission.Butthenetworkisnotflexibleandcannotachieveeffectivemanagement.WDMWDMSDH/ASONSDH/ASONOurCurrentRequirementsLargebandwidthandlargeparticlesHighnetworksurvivabilityandreliabilityHighnetworkefficiency，providebusinessquicklyLow-costnetworkmusteasytoexpandEasyforEquipmentmanufacturerstoconnectPage7DemanddrivestechnologydevelopmentSohowcanwehavetheSohowcanwehavetheadvantagesofSDHandWDMadvantagesofSDHandWDMinthesametimeinthesametime?

@#@ThenThenOTNcameintobeingOTNcameintobeingPage8Chapter1Background&@#@ConceptofOTNSection2:

@#@ConceptofOTNPage9ContentsContentsConceptofOTNOTNconceptproposed：

@#@In1998,ITU-Tformallyproposedtheconcept,andtookitasanidealbasisforfuturenetworkevolution.OTN：

@#@OpticalTransportNetworkOpticalTransportNetwork（OTN）iscomposedofasetofOpticalNetworkElementsconnectedbyopticalfiberlinks,abletoprovidefunctionalityoftransport,multiplexing,routing,management,supervisionandsurvivabilityofclientsignals,accordingtotherequirementsgiveninRec.G.872.AnOpticalTransportNetworkisantransportnetworkbasedonWDMtechnology.Itisthenext-generationbackbonenetwork.Page10FrameworkofOTNInFebruary1999,G.872,thefirstproposalofOTNwasapproved.Nowadays,OTNstandardsystemhasbeenimproved.ManagementinformationmodelG.874.1/875ArchitectureaspectsG.872PhysicallayercharacteristicsG.959.1/692/693EquipmentmanagementAspectsG.874/7710Jitter/driftperformanceG.8251OpticalsafetyregulationsG.664BERG.8201EquipmentfunctionG.806/G.798Structure/Mapping/OverheadG.709APSG.873.1/808.1Page11OTNCharacteristicOTNHierarchydefinedinG.872ComplexframingdefinedinG.709InterfacedefinedinG.709，Includingwavelengthdivisionsideandclientside（typicallyusedforinterconnection）Reconfigurableopticaladd-dropmultiplexerODUkcross（OTH）LoadcontrolplanePage12OTNcharacteristicNetworkHierarchyofOTNOPUODUOTUElectricallayerOChOMSOTSOpticallayerROADMOTNOpticallayerandelectricallayerperformancemonitoringOpticallayerperformancemonitoringOTU（OTNframestructure）OTNincludeselectrical-layernetworkandoptical-layernetworkPage13OTNTechnicalSuperiority1.Full-serviceaccessandlargecapacitytransmission2.Maintenance&@#@Management3.NetworkingandProtection4.FlexiblegroomingSDH、Ethernet、IP、ATM、GFPtransparenttransmissionTbitsleveltransportcapabilityWealthofoverheadbytesSixlevelsofindependentTandemConnectionMonitoring（TCM）SupportingtraditionalWDMopticallayerprotectionIntelligentprotectionandrestorationwithMeshnetworksOpticallayercross-connectMultiplexerandgroomingsub-wavelengthservices（ODUk/GE）ODUkcascadeandvirtualcascadePage14OTNSuperiorityChapter2HierarchyofOTNPage15ContentsContentsOTNHierarchicalStructureTheopticallayercanbedividedinto：

@#@OpticalChannel（OCh）、OpticalMultiplexSection、OpticalTransmissionSection（OMS）OChcanbedividedintothreesub-layerelectronicfield：

@#@OpticalPayloadUnit（OPU）、OpticalDataUnit（ODU）、OpticalTransportUnit（OTU）OpticallayerOpticalChannellayernetwork（OCh）OpticalMultiplexSectionlayernetwork（OMS）OpticalTransmissionSectionlayernetwork（OTS）ClientlayerOChPayloadUnit（OPU）OChDataUnit（ODU）OChtransportUnit（OTU）OChOpticallayerThreeelectronicfieldlayersIP、ETHERNET、ATM、SDH/SONETPage16OTNHierarchicalStructureEssentially，OTNconsistsoffollowingparts：

@#@OpticalTransmissionSection（OTS）OpticalChannel（OCh）OpticalMultiplexSection（OMS）OpticalDataUnit（ODU）Optical