ITU-T G.984.1(03 2003) (英) Gigabit-capable Passive

INTERNATIONALTELECOMMUNICATIONUNIONITU-TG.984.1TELECOMMUNICATIONSTANDARDIZATIONSECTOROFITU(03/2003)SERIESG:TRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSDigitalsectionsanddigitallinesystem–OpticallinesystemsforlocalandaccessnetworksGigabit-capablePassiveOpticalNetworks(GPON):GeneralcharacteristicsITU-TRecommendationG.984.1ITU-TG-SERIESRECOMMENDATIONSTRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSINTERNATIONALTELEPHONECONNECTIONSANDCIRCUITSG.100–G.199GENERALCHARACTERISTICSCOMMONTOALLANALOGUECARRIER-TRANSMISSIONSYSTEMSG.200–G.299INDIVIDUALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONESYSTEMSONMETALLICLINESG.300–G.399GENERALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONESYSTEMSONRADIO-RELAYORSATELLITELINKSANDINTERCONNECTIONWITHMETALLICLINESG.400–G.449COORDINATIONOFRADIOTELEPHONYANDLINETELEPHONYG.450–G.499TESTINGEQUIPMENTSG.500–G.599TRANSMISSIONMEDIACHARACTERISTICSG.600–G.699DIGITALTERMINALEQUIPMENTSG.700–G.799DIGITALNETWORKSG.800–G.899DIGITALSECTIONSANDDIGITALLINESYSTEMG.900–G.999GeneralG.900–G.909ParametersforopticalfibrecablesystemsG.910–G.919Digitalsectionsathierarchicalbitratesbasedonabitrateof2048kbit/sG.920–G.929Digitallinetransmissionsystemsoncableatnon-hierarchicalbitratesG.930–G.939DigitallinesystemsprovidedbyFDMtransmissionbearersG.940–G.949DigitallinesystemsG.950–G.959DigitalsectionanddigitaltransmissionsystemsforcustomeraccesstoISDNG.960–G.969OpticalfibresubmarinecablesystemsG.970–G.979OpticallinesystemsforlocalandaccessnetworksG.980–G.989AccessnetworksG.990–G.999QUALITYOFSERVICEANDPERFORMANCEG.1000–G.1999TRANSMISSIONMEDIACHARACTERISTICSG.6000–G.6999DIGITALTERMINALEQUIPMENTSG.7000–G.7999DIGITALNETWORKSG.8000–G.8999Forfurtherdetails,pleaserefertothelistofITU-TRecommendations.ITU-TRec.G.984.1(03/2003)iITU-TRecommendationG.984.1Gigabit-capablePassiveOpticalNetworks(GPON):GeneralcharacteristicsSummaryThisRecommendationdescribesaflexibleopticalfibreaccessnetworkcapableofsupportingthebandwidthrequirementsofbusinessandresidentialservicesandcoverssystemswithnominallineratesof1.2Gbit/sand2.4Gbit/sinthedownstreamdirectionand155Mbit/s,622Mbit/s,1.2Gbit/sand2.4Gbit/sintheupstreamdirection.Bothsymmetricalandasymmetrical(upstream/downstream)Gigabit-capablePassiveOpticalNetwork(GPON)systemsaredescribed.ThisRecommendationproposesthegeneralcharacteristicsforGPONbasedonoperators'servicerequirements.ThisRecommendationaimstoimproveontheG.983.1systembyreconsideringasupportingservice,securitypolicy,nominalbit-rate,andsoon.Inordertoinsuremaximalcontinuitywithexistingsystemsandopticalfibreinfrastructure,thisRecommendationmaintainssomerequirementsofITU-TRec.G.983.1.SourceITU-TRecommendationG.984.1(2003)waspreparedbyITU-TStudyGroup15(2001-2004)andapprovedundertheWTSAResolution1procedureon16March2003.iiITU-TRec.G.984.1(03/2003)FOREWORDTheInternationalTelecommunicationUnion(ITU)istheUnitedNationsspecializedagencyinthefieldoftelecommunications.TheITUTelecommunicationStandardizationSector(ITU-T)isapermanentorganofITU.ITU-Tisresponsibleforstudyingtechnical,operatingandtariffquestionsandissuingRecommendationsonthemwithaviewtostandardizingtelecommunicationsonaworldwidebasis.TheWorldTelecommunicationStandardizationAssembly(WTSA),whichmeetseveryfouryears,establishesthetopicsforstudybytheITU-Tstudygroupswhich,inturn,produceRecommendationsonthesetopics.TheapprovalofITU-TRecommendationsiscoveredbytheprocedurelaiddowninWTSAResolution1.InsomeareasofinformationtechnologywhichfallwithinITU-T'spurview,thenecessarystandardsarepreparedonacollaborativebasiswithISOandIEC.NOTEInthisRecommendation,theexpressionAdministrationisusedforconcisenesstoindicatebothatelecommunicationadministrationandarecognizedoperatingagency.INTELLECTUALPROPERTYRIGHTSITUdrawsattentiontothepossibilitythatthepracticeorimplementationofthisRecommendationmayinvolvetheuseofaclaimedIntellectualPropertyRight.ITUtakesnopositionconcerningtheevidence,validityorapplicabilityofclaimedIntellectualPropertyRights,whetherassertedbyITUmembersorothersoutsideoftheRecommendationdevelopmentprocess.AsofthedateofapprovalofthisRecommendation,ITUhadnotreceivednoticeofintellectualproperty,protectedbypatents,whichmayberequiredtoimplementthisRecommendation.However,implementorsarecautionedthatthismaynotrepresentthelatestinformationandarethereforestronglyurgedtoconsulttheTSBpatentdatabase.ITU2003Allrightsreserved.Nopartofthispublicationmaybereproduced,byanymeanswhatsoever,withoutthepriorwrittenpermissionofITU.ITU-TRec.G.984.1(03/2003)iiiCONTENTSPage1Scope............................................................................................................................12References.....................................................................................................................13Definitions....................................................................................................................24Abbreviations................................................................................................................25Architectureoftheopticalaccessne