ETSI EN 302 405 V7.1.1 (2000-08)

Digital cellular telecommunications system (Phase 2+) (GSM); GSM Cordless Telephony System (CTS), Phase 1; CTS Architecture Description; Stage 2 (GSM 03.56 version 7.1.1 Release 1998)

DEN/SMG-030356Q7

Digitalni celični telekomunikacijski sistem (faza 2+) – GSM sistem brezvrvične telefonije (CTS) – Faza 1 – Opis arhitekture CTS – Stopnja 2 (GSM 03.56, različica 7.1.1, izdaja 1998)

General Information

• Status: Published
• Publication Date: 04-Sep-2000
• Technical Committee: SMG 3 - Network Aspects
• Current Stage: 12 - Completion
• Due Date: 28-Jul-2000
• Completion Date: 05-Sep-2000
• Ref Project: SIST EN 302 405 V7.1.1:2003 - Digital cellular telecommunications system (Phase 2+) (GSM); GSM Cordless Telephony System (CTS), Phase 1; CTS Architecture Description; Stage 2 (GSM 03.56 version 7.1.1 Release 1998)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); GSM Cordless Telephony System (CTS), Phase 1; CTS Architecture Description; Stage 2 (GSM 03.56 version 7.1.1 Release 1998)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 302 405 Version 7.1.1SIST EN 302 405 V7.1.1:2003en01-december-2003SIST EN 302 405 V7.1.1:2003SLOVENSKI
STANDARD
ETSIEN302405V7.1.1(2000-08)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1;CTSArchitectureDescription;Stage2(GSM03.56version7.1.1Release1998)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)2(GSM03.56version7.1.1Release1998)ReferenceDEN/SMG-030356Q7KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM),GSMCordlessTelephonySystem(CTS)ETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:[phone]Fax:[phone]SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:[e-mail]opartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)3(GSM03.56version7.1.1Release1998)ContentsIntellectualPropertyRights.6Foreword.6Introduction.61Scope.72References.73Definitionsandabbreviations.73.1Definitions.73.2Abbreviations.84Mainconcepts.84.1CTSdefinition.84.2CTSNetwork.84.3CTSRolemodels.94.3.1CTSFPowner'srolemodel.94.3.2CTSMSsubscriber'srolemodel.94.4CTSRadiointerface.104.4.1AdaptiveFrequencyAllocation.104.4.2TotalFrequencyHopping.104.4.3CTSandGSMcompatibilityissues.104.5CTSoperationalrequirements.104.5.1GSMcoveragefromDPLMN.114.5.2LimitedGSMcoveragefromDPLMN.114.5.3NoGSMcoveragefromDPLMN.124.6CTSReferenceModel.124.6.1GeneralCTSReferenceModel.124.6.2SimplifiedCTSreferencemodel(limitedenrolmentcontrol).134.6.3SimplifiedCTSreferencemodel(LicenceexemptCTSband).144.6.4CTSconnectedtoPLMNreferencemodel.154.7GSMOperatorcontrolofCTSservice.164.7.1CTSSystemcontrol.174.7.2GSMOperatorcontrolofCTSfrequencylist.174.7.3CTSsysteminitialisationforlicenseexemptfrequencybandforCTSoperation.184.7.4CTSsysteminitialisationwithDPLMNcoverageandlimitedcoverage.184.7.4.1FirststageCTS-FPinitialisation(TemporaryGFLallocation).184.7.4.2SecondstageCTS-FPinitialisation(GFLconfirmation).184.7.5CTSsysteminitialisationwithoutDPLMNcoverage.184.7.6GFLupdate.194.7.6.1CTSFPGFLupdate.194.7.7ErasureofGFLintheCTSFP.194.8De-initialisationofCTSFP.194.8.1CTSOperatorcontrolmode.194.8.2Licenceexemptmode.204.9CTSMSEnrolment.204.9.1EnrolmentcontrolattheCTS-FP.204.9.2EnrolmentcontrolattheCTS-SN.214.9.2.1InitialenrolmentattheCTS-SN.214.9.2.2SubsequentenrolmentattheCTS-SN.214.9.3AgreementbetweentheCTSFPSubscriberandCTSMSsubscribers.214.9.4CTSauthorisationcheckofenrolmentofaCTSMSontoaCTSFP.214.10De-enrolmentofCTSMSfromaCTS-FP.214.10.1Mutualautentication.224.11CTSMMandCMlayers.224.12CTSMMandCMlayersonthefixednetworkside.224.13CTSMobilityservices.22SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)4(GSM03.56version7.1.1Release1998)4.13.1CTSsupportinidlemode.224.13.2CTSattachanddetach.224.14CTSCMlayer.224.14.1CTSserviceindication.224.15SubscriberinformationforCTS.235Transmission.236Informationstorage.236.1InformationmanagedperCTS-MSsubscriber.236.1.1StoredintheCTS-MSSIM.236.1.2StoredintheHLR.236.1.3StoredintheMSC/VLR.236.2InformationmanagedperCTS-FPsubscriber.236.2.1StoredintheCTS-FPSIM.236.2.2StoredintheCTS-FPE.236.2.3StoredintheCTS-SN.236.2.4StoredintheCTS-HLR.247Identities.247.1IdentificationoftheCTS-FP.247.1.1IFPSI.247.1.2IFPEI.247.1.3FPBI.247.2Addressingparameters.247.2.1AddressingtheCTS-FP.247.2.1.1CTS-FPFixedNetworkdiallingnumber.247.2.1.2CTSFPname.247.2.2AddressingtheCTS-MSsubscriber.247.2.2.1MSISDN.247.2.2.2CTS-MSSubscriberIdentity(CTS-MSI).258Operationandmaintenanceaspects.259Functionandinformationflows.259.1CTSFPmanagement.259.1.1CTSFPInitialisation.259.1.2UpdateofCTSFPfrequencies.269.2CTSmanagementforCTSMS.279.3CTSintegrationtoFixedMobileConvergenceapplications.279.4FunctionsrelatedtoMSinidlemodeforsupportofCTS.279.4.1Cellselectionandreselection.279.4.2DPLMNCellinformationgathering.279.4.3CTSlocalmobility.289.4.3.1CTSattachment.289.4.3.2CTSdetachment.299.5FunctionsrelatedtoactivemodesupportofCTS.299.5.1MSconnectionestablishmentforMTandMOcalls.299.5.2Handover.299.6Overviewofsignalling.3010CTSArchitecture.3010.1CTSElements.3010.1.1CTSFixedPart.3010.1.2CTSMobileStation.3010.1.3CTScontrollingandsupportingnetworkentities.3110.2CTSInterfaces.3210.2.1CTSRadioInterface(Um*).3210.2.2GSMRadioInterface(Um).3210.2.3CTSAccessNetworkInterface.3210.2.3.1PhysicalcharacteristicsoftheCTSFixedNetworkInterface.3210.2.3.2PhysicalcharacteristicsoftheCTSGSMNetworkInterface.3210.2.4Networkinternalinterfaces.3210.2.4.1InterfaceCTSSN/CTSHLR(Cd).32SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)5(GSM03.56version7.1.1Release1998)10.2.4.2InterfaceCTSSN/CTSHLR(Cd').3210.2.4.3InterfaceCTSSN/CTSFRA.3210.2.4.4InterfaceCTSFRA/BSC.3210.3CTSsub-systems.3310.4NetworkAccess.3311CTSmainparameters.3311.1RadioResourceManagementparameters.3311.2Identificationparameters.3411.3Securityspecificparameters.3412ThelocalCTS.3412.1TransmissionandSignallingPlanes.3412.1.1TransmissionPlane.34History.35SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)6(GSM03.56version7.1.1Release1998)IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeSpecialMobileGroup(SMG).ThepresentdocumentwassubmittedtoPublicEnquirywiththeETSInumber301405.ForVotethenumberwaschangedto302405becausethenumber301405isreservedandwasallocatedaccidentally.Thepresentdocumentspecifiesthestage2descriptionoftheCTSservicewithinthedigitalcellulartelecommunicationssystem.ThecontentsofthepresentdocumentaresubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillthenberepublishedbyETSIwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version7.x.ywhere:7IndicatesGSMPhase2+Release1998;xtheseconddigitisincrementedfortechnicalenhancements,corrections,updates,etcythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthisEN:21July2000DateoflatestannouncementofthisEN(doa):31October2000DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):30April2001DateofwithdrawalofanyconflictingNationalStandard(dow):30April2001IntroductionThissystemarchitecturestage2descriptionispartoftheoverallstandardforaGSMbasedCordlessTelephonySystem(GSM-CTS).ThesystemisintendedtoprovideacordlessconnectionbetweenthePSTN/ISDNnetworkoraGSMnetworkandGSM-basedCTSMobileStations(GSM-MS)viaaprivateCTSFixedPart(CTS-FP).SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)7(GSM03.56version7.1.1Release1998)1ScopeThepresentdocumentdefinesthestage2descriptionfortheCordlessTelephonySystem(CTS)basedonGSMradio.Asthesecondstageofathree-levelstructure,itisderivedfromthestage1servicedescription.Asmentionedalreadyinthestage1description,aphasedapproachisindispensabletohaveanearlyfirstspecificationreadyformarketneeds.Thefirstphasefocusesontherequirementsnecessarytoelaboratetheradiointerfaceandthesecurityaspectsforanapplicationsupportingthespeechtele-service(includingDTMFsupport)inaresidentialsinglecellenvironment.ThestandardisationofthephysicallayersoftheGSM-CTSfixednetworkinterfaceisnotinthescopeofthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.• ForthisRelease1998document,referencestoGSMdocumentsareforRelease1998versions(version7.x.y).[1]GSM01.04:"AbbreviationsandAcronyms",Version5.0.0.[2]GSM02.56:"Digitalcellulartelecommunicationssystem(Phase2+),Phase1;GSMCordlessTelephonySystem(CTS),Phase1;ServiceDescription;Stage1".[3]GSM03.03"Digitalcellulartelecommunicationssystem(Phase2+);Numbering,addressingandidentification".[4]GSM03.20:"Digitalcellulartelecommunicationsystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1,Securityrelatednetworkfunctions;stage2".[5]GSM03.52"Digitalcellulartelecommunicationsystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1,LowerlayersoftheCTSradiointerface".[6]GSM03.40:"DigitalCellularTelecommunicationsSystem(Phase2+);TechnicalRealisationoftheShortMessageService(SMS)Point-to-Point(PP)".3Definitionsandabbreviations3.1DefinitionsBesidesthedefinitionsaccordingtotheCTSstage1servicedescription[2]thefollowingdefinitionsareapplicabletothepresentdocument:Fixednetwork:APSTNorISDNnetwork.Accessnetwork:thenetworkonwhichtheCTS-FPisconnectedandwhichcarriestheincomingandoutgoingcallstotheCTS-FP.ItcouldbeeitherafixednetworkoraGSMnetwork.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)8(GSM03.56version7.1.1Release1998)CTSradiointerface:TheradiointerfacebetweenCTS-MSandCTS-FP.CTS-MSIx:CTSLocalMobileSubscriberIdentityrelatedtothexthCTS-MSinitialisedonaCTS-FPCTS-MSattachment:CTS-MSattachmentisaprocedurewhichaCTS-MSinitiateswhentheCTS-MSdetectsthatitiswithincoverageofaCTS-FPtowhichtheCTS-MSisenrolled.CTS-MSdetachment:CTS-MSdetachmentisaprocedurethattheCTS-MSinitiates,andindicatestotheCTS-FPthattheCTS-MSwillbenolongerreachablebytheCTS-FP.Enrollment:TheprocedurebywhichaCTS-MSismadeknowntoaCTS-FPinorderthattheCTS-FPcanprovideCTSservice.3.2AbbreviationsThefollowinglistdescribestheabbreviationsandacronymsusedinthepresentdocument.TheGSMabbreviationsexplainedinGSM01.04[1]arenotincludedbelow.CTSCordlessTelephonySystemCTSFRACTSFrequencyallocationfunctionalentityCTSHLRCTSHomeLocationRegisterFunctionalentityCTS-FPCTS-FixedPartCTS-MSCTS-MobileStationCTS-MSICTSMobileSubscriberIdentityintheCTS-FPCTS-MSNCTSMobileStationNumberCTS-SAPCTSServiceAccessPointCTS-SIMCTSSubscriberIdentityModuleDPLMNDonorPLMNGFLGenericFrequencyList4Mainconcepts4.1CTSdefinitionTheCTSoperatorcanprovideaCTSservicewhichallows(usingamodifiedGSMradiointerface)toprovideacordlesstelephoneserviceattachedtothefixednetworkortoacellularnetwork.TheservicesofferedbyCTSarelimitedtothetypeofnetworktowhichtheCTS-FPisconnected.InordertoofferthisservicetheCTSoperatorneedstohaveanagreementwithaGSMoperatorinordertousethefrequenciesbelongingtohisPLMNbytheCTSFP.ThistypeofPLMNistermedtobeaDonorPLMN(DPLMN).NOTE:TheCTSoperatormaybeaGSMoperator.DependingupontheoperatoragreementsapersonwantingtooperateaCTS-FP(theCTSFPsubscriber)mayberequiredtohaveatleastthreesubscriptions:onewiththeCTSoperator,andonewiththeGSMoperator;andinadditiontothesesubscriptionstheCTSFPsubscriberneedstohaveeitherasubscriptiontoafixedorGSMoperatortowhichtheCTSFPistobeconnectedoraccesstoafixedlineinterface.ThefrequencieswhichtheCTSserviceusesmaybecontrolledbytheoperatorwhichholdsthelicensefortheGSMfrequencybandusedfortheservice.TheCTSFPsubscribercanhaveagreementswithotherCTSMSsubscriberstousehisbasestation.Therolemodelisdescribedin[2].4.2CTSNetworkACTSnetworkisdefinedtobemadeupofoneormoreCTScells.WhenaCTSnetworkhasmorethanonecellthesecellsaresynchronised(infrequency,atTDMAframeedgesandTDMAframenumber)ontheradiointerface.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)9(GSM03.56version7.1.1Release1998)4.3CTSRolemodels4.3.1CTSFPowner'srolemodelCTSOperatorDPLMNFixedOperatorCTSFPOwnerAgreementsSubscription123CTS-MSSubscriber54GSMoperator1OptionalsubscriptionsCTSrolemodelforaCTSFPsubscriberInordertoreceiveavalidCTS-GFLtheCTS-FPownerneedstohaveasubscription(2)withaCTSoperator.ThissubscriptionismaterialisedbyaCTS-SIMcardstoredintheCTS-FP.TheCTSoperatorhasanagreement(3)withaDPLMNpartofaGSMoperator1touseitsfrequenciesforCTSallocation.WhentheCTS-FPisusedinlicenceexemptmode,theCTS-FPownerdoesnotneedtohaveasubscription(2)withaCTSoperator.InthiscasethefrequencyallocationtoCTSusageismadedirectlybynationalauthorities.CTS-FPownershallalsoenrol(4)atleastoneCTS-MS,whichhasavalidGSMsubscription(5)withtheGSMoperator1.Inparallel,CTS-FPownerneedsasubscription(1)withanaccessnetworkoperatorinorderestablishcommunicationoverthenetwork.ThisaccessnetworkcouldbeeitherafixednetworkoraGSMnetworkdependingofCTS-FPcapabilities.WhentheCTS-FPisconnectedtoaGSMnetwork,thisGSMoperatordoesnotneedtohaveanyrelationwiththeGSMoperator1whoprovidesCTSfrequencies(DPLMN).4.3.2CTSMSsubscriber'srolemodelCTSFPOwnerAgreementsSubscriptionCTSMSSubscribersGSMOperator224531FMCserviceproviderCTSOperatorOptionalsubscriptions6CTSMSsubscriber'srolemodelTheCTS-MSsubscriberhasavalidsubscription(1)withaGSMoperatorwhoallowsCTSoperations.Incaseofroaming,theVPLMNshallconfirmtheauthorisationtodoCTSoperationstothisCTS-MS.TheCTSMSsubscriberhasagreement(2)withoneCTS-FPownerthatallowshimtoenrolonhisCTSFP.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)10(GSM03.56version7.1.1Release1998)InordertoenrolonaCTS-FP,aCTS-MSsubscribermayneedasubscription(3)withtheCTS-operatorwhocontrol(4)thisCTS-FP.ThisCTS-operatormayhaveanagreement(5)withtheGSM-operatorofthisCTS-MS.NOTE:thisGSMoperatormaybedifferentfromtheonewhoprovidesfrequenciestotheCTS-operator.InordertohaveaccesstovalueaddedFixedMobileConvergenceservices(e.g.unifiednumber),theCTS-MSsubscriberneedsasubscription(6)withaFMCserviceprovider.TheseservicesandthissubscriptionareoutsideofthescopeoftheGSM-CTSstandard.4.4CTSRadiointerfaceTheCTSradiointerfaceisbasedontheuseofamodifiedGSMradiointerfaceasspecifiedin[5].TheconceptistoconstructamodifiedGSMradiointerfacewhichrequiresnochangeofMEhardware,onlysoftwareneedbechanged.ThemodifiedGSMradiointerfaceshall(onbothuplinkanddownlink)onlycauseminimaldisturbancetotheDPLMN.Inordertoachievethis,threeconceptshavebeenadopted:• AmodifiedlowpowerradiointerfaceusingGSMburstformatsthatcauselimiteddisturbancetopresentGSMmobilesandinfrastructure,see[5];• AdaptiveFrequencyAllocation(AFA),see[5];• TotalFrequencyHopping(TFH),see[5].4.4.1AdaptiveFrequencyAllocationInordertominimiseinterferencebetweenCTSnetworksandGSMnetworks,anAdaptiveFrequencyAllocation(AFA)mechanismisadopted,wherebytheCTSFPchoosesfrequencieswithinavalidGFLwheretheuplinkanddownlinkisinterferedtheleast.Theconceptandthemechanismsusedaredescribedinmoredetailin[5].4.4.2TotalFrequencyHoppingToreducefurtherthepossibilityofinterference(withtheGSMPLMNsandothersCTS-FP/MSpairs)aTotalFrequencyHopping(TFH)mechanismisadopted.TheconceptofTFHandthemechanismsusedaredescribedinmoredetailin[5].4.4.3CTSandGSMcompatibilityissuesCTSservicecannotbeofferedtoexistingmobileimplementationswithoutachangeofsoftware.CompatibilityissuesforGSMmobileswhicharenotoperatinginCTSmodemaybesolvedbytwoways:• theCTSradiointerfaceisdesignedinordertocreateminimumdisturbancetoexistingmobileimplementationsasspecifiedin[5];• andbyofferingtheGSMoperatorcontroloverthefrequenciesusedforCTSoperation.4.5CTSoperationalrequirementsTheCTSoperatortogetherwithagreementsfromtheGSMoperatorcandefinethecoverageconditionsunderwhichCTSservicecanbeofferedtothesubscriber.Thefollowingcoverageconditionsareidentified:• GSMcoveragefromtheDPLMN.ThatistosaywherethecoverageoftheDPLMNmeetsthecell(re)selectioncriteriaforobtainingDPLMNservice.• LimitedcoveragefromtheDPLMN.ThatistosaywherethecoverageoftheDPLMNdoesn'tmeetcell(re)selectioncriteriaforobtainingservicewheretheCTS-FPisinstalled.• NoGSMcoveragefromtheDPLMN.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)11(GSM03.56version7.1.1Release1998)4.5.1GSMcoveragefromDPLMNInthiscasetheCTSFP'scoverageisfullywithinthecoverageoftheDPLMN.CTSFPDPLMNFigure1:GSMcoveragefromDPLMN4.5.2LimitedGSMcoveragefromDPLMNTwocasesareidentified.CTSFPDPLMNFigure2:LimitedGSMcoveragefromDPLMNThecoverageoftheDPLMNispartiallyachievedintherangeoftheCTSFP.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)12(GSM03.56version7.1.1Release1998)CTSFPDPLMNTTransportFigure3:LimitedcoveragefromDPLMNwithinTTRANSPORTThecoverageoftheDPLMNisnotachievedintherangeoftheCTSFPbutislocatedwithinadistance,suchthat,thetimeittakesbetweenlossofcontactfromtheDPLMNtothetimetheCTSMScanbebroughtintocoverageoftheCTSFPiswithinT_TRANSPORT.4.5.3NoGSMcoveragefromDPLMNThetimebetweenleavingDPLMNandenteringtheCTSFPcoverageislongerthanT_TRANSPORT.CTSFPDPLMNTTransportFigure4:NoGSMcoverage4.6CTSReferenceModel4.6.1GeneralCTSReferenceModelThegeneralreferencemodeloftheCTSservicehasthefollowingadditionalnetworkelements:• theCTS-HLRisthefunctionalentityhandlingCTS-FPsubscriptions;SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)13(GSM03.56version7.1.1Release1998)• theCTS-SNisthefunctionalentityperformingthecommunicationwithCTS-FPviatheCfinterfacewhichusesthefixednetworkasabearer.TheCd'interfacebetweenCTS-SNandCTS-HLRisusedforsubscriptioncontroloftheCTSFPSIM.TheCTS-SNhasaninterface(Cd)totheGSMHLRinordertoreceivethechallenge/responsepairsforauthenticationoftheGSMSIMwhenauthenticationoftheGSMSIMisrequiredtobeperformedviathefixednetwork;• theCTS-FRAisthefunctionalentityhandlingtheCTSfrequencyallocation;• theLocalExchange(isapartofthefixednetwork),itisaccessedbytheCTS-MSviatheCTS-FPforusercommunication.TheLocalExchangemaybeusedasabearertoprovidedialoguebetweenCTS-SNtoCTS-FPandCTS-SNtoCTS-MS.LocalExchangeCTS-MSMESIMCfUm*CTS-SNCTS-FRABSCMSC/VLRBTSCd’CTS-HLRHLRAuCCdCTS-FPUmUsercommunicationCTSapplicationsignallingusingGSMbearers(e.g.SMS)andfixednetworkbearers(e.g.V23)SignallingonstandardisedinterfaceSignallingonproprietaryinterfacesSignallingontobestandardisedinterfacesSIMCTS-AuCFigure5:CTSreferencemodel4.6.2SimplifiedCTSreferencemodel(limitedenrolmentcontrol)InitialCTSintroductionshouldmayallowaneasyintroductionoftheservice.ThissectiondealswithsimplifiedCTSreferencemodel.SimplificationoftheCTSreferencemodelcanbeachievediftheCTSoperatorchoosesthatenrolmentisonlycheckedlocallyintheCTS-FPseesection4.9.1EnrolmentcontrolattheCTS-FP.InthissimplifiedmodeofoperationtheCTS-FPSIM(whichisprogrammedbytheCTSoperator)holdsinformationastowhichIMSIrangescanbeacceptedforenrolment.InthecasewheretheIMSIofaCTS-MSisnotwithintheranges,thentheenrolmentoftheCTS-MSisrefusedbytheCTS-FP.SecurityforthoseCTS-MSwhichcanbeenrolledisassuredattheCTS-FPbylocalsecurityproceduresasspecifiedin[4].SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)14(GSM03.56version7.1.1Release1998)InthiscaseauthenticationoftheCTS-MSbytheCTS-SNcanbeavoidedandthustheinterfacebetweentheCTS-SNandGSM-HLRneednotbeimplemented.ThesimplifiedCTSreferencemodelisshownbelow.LocalExchangeCTS-MSMESIMCfUm*CTS-SNCTS-FRABSCMSC/VLRBTSCd’CTS-HLRCTS-FPUmUsercommunicationCTSapplicationsignallingusingGSMbearers(e.g.SMS)andfixednetworkbearers(e.g.V23)SignallingonstandardisedinterfaceSignallingonproprietaryinterfacesSignallingontobestandardisedinterfacesSIMAuCFigure6:SimplifiedCTSreferencemodel(limitedenrolmentcontrol)4.6.3SimplifiedCTSreferencemodel(LicenceexemptCTSband)ThissectionisrelativetotheusageofCTScapabledeviceswithaCTSlicenseexemptradioband.InthiscasethefrequencyallocationforCTSusageisdefineddirectlybynationalauthorities.AlltheradioinformationrelativetoCTSusagearestoredintheCTS-FPbytheCTS-FPmanufacturer.TheseradioinformationarelinkedwithageographicalinformationwhichinformstheCTS-FPinwhichcountry(orregion)thesefrequenciescanbeused.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)15(GSM03.56version7.1.1Release1998)LocalExchangeCTS-MSMESIMCfUm*BSCMSC/VLRBTSCTS-FPUmUsercommunicationSignallingonstandardisedinterfaceSignallingonproprietaryinterfacesSignallingontobestandardisedinterfacesWhentheCTS-FPisusedinlicenceexemptmode,theCTS-FPownerdoesnotneedtohaveasubscriptionwithaCTSoperator.ThereforetheCTS-FPcanworkwithoutCTS-SIMcardandnoexchangewithaCTS-SNisnecessary.HoweverwhenaCTS-SIMcardisinsertedintheCTS-FP,theCTS-FPshallnomoreconsidertheCTSlicenceexemptinformationstoredinitsmemory,andshallworkoperateinlicencemode.TheCTSmobileisnotinformedaboutthestatusofthefrequencyusedforCTS(i.e.licensedorlicenceexempt).Themobileoperationsarethesameinbothcases.AsinlicensedmodealltheCTSoperationsmadebythemobileareconditionedtothereceptionbytheMSofthe"CTSallowed"informationsentbytheV-MSC(seechapter9.2)4.6.4CTSconnectedtoPLMNreferencemodelInthecaseofaCTS-FPconnectedtoaGSMnetworkthegeneralreferencemodelismodifiedasdescribedbelow:SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)16(GSM03.56version7.1.1Release1998)CTS-MSMESIMCsUm*CTS-SNCTS-FRABSCMSC/VLRBTSCd’CTS-HLRHLRAuCCdCTS-FPUmUsercommunicationCTSapplicationsignallingusingGSMbearers(e.g.SMS)andfixednetworkbearers(e.g.V23)SignallingonstandardisedinterfaceSignallingonproprietaryinterfacesSignallingontobestandardisedinterfacesSIM-CTSCTS-AuCSIM-GSMUmFigure7:SimplifiedCTSreferencemodel(limitedenrolmentcontrol)TheCfinterfacebetweentheCTS-FPandthefixednetworkisreplacedbyaGSMstandardUminterfacewithaGSMnetwork.OnthisUminterfacetheCTS-FPisconsideredbytheGSMnetworkasastandardGSMMS:ieaGSM-MEwithavalidGSMSIMcard.ItispossiblethattheGSMnetworkonwhichtheCTS-FPisconnectedisdifferentfromtheoneusedbyCTS-MS.AlltheexchangebetweentheCTS-SNandtheCTS-FParemadeviaastandardGSMcircuitswitcheddataconnection,andusingthesameapplicationsignallingthantheonedefinedfortheCTSconnectedtoPSTN.TheCsinterfacebetweentheCTS-SNandtheMSC,willbethemostappropriatelinktosupportthiscircuitswitcheddatastream.Themodificationsduetosimplifiedenrolmentcontrol(section4.5.2)arealsoapplicableisthecaseofCTSconnectedtoPLMN.4.7GSMOperatorcontrolofCTSserviceTheGSMoperatorhascontroloftheCTSservicethatisoperatinginhisPLMN.Thestage3CTSspecificationsshallensurethatitshallnotbepossiletooperateaCTSservicewithoutthepermissionoftheGSMoperator.WhenaCTScapablemobileaccessesaGSMPLMNitwillbeprovidedwithinformationinordertoallowtheMStooperateCTSwithintheGSMPLMN.ThismaybeprovidedtoallCTS_MSoronaperCTS-MSbasisdependingontheGSMoperatorsrequirements.IfnoinformationisprovidedforCTSoperationthentheCTSMSisprohibitedfromfromoperatinginCTSmode.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)17(GSM03.56version7.1.1Release1998)4.7.1CTSSystemcontrolControloftheCTSoperationdependsofthefrequencyscenarioofthecountry(orregion)inwhichCTSserviceistobeprovided.Twoscenariosareforeseen:• licenceexemptfrequencybandisusedforCTSoperation;thisiswheretherelevantauthorityinacountry(orregion)hasallocatedafrequencybandforCTSserviceandtheCTS-FPcandeterminethatitisinthatcountry(orregion);and• sharedfrequencybandsforCTSoperation;thisiswhereaGSMoperatorinacountryhasallocatedpartofhisfrequencyforCTSservice.4.7.2GSMOperatorcontrolofCTSfrequencylistOneofthemajorconceptsofCTSisthecontrolofthefrequenciesforusebytheCTS-FPs.ThefrequencyallocationforCTSoperationistermedtheGFL(GenericFrequencyList).TheGFListhefrequencyallocationthateitheraGSMoperatorhasagreedtogivetotheCTSoperatorfortheoperationofaCTSservicewithinaspecificgeographicalareaforaspecificperiodoftimeoradedicatedfrequencyallocationforCTSoperation.TheGFLismadeupofavalidperiodandoneormorefrequencyinformation.[Editor'snote:frequencyinformationmaybevalidforspecificperiodsoftimeduringtheday(operationalperiod).InthiscasetheclockintheCTS-FPintheCTS-MSshouldbealignedwiththeDPLMN;thiscouldbedonee.g.byusingtheGSMNITZprocedurewhichgivesextramobilityinformationoneofwhichisthelocaltime]ThediagrambelowrepresentsthestructureofaGFL.ForaGFLtobevaliditmusthaveacurrentvalidperiod.AGFLFrequencyinformationconsistsofHasoneormorefrequencyInformationAGFLHas1validperiodanoperationalperiodGFLValidperiodFrequencyInformationOperationalperiodFrequencylist&anassociatedfrequencylistFigure8:GFLstructureSIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)18(GSM03.56version7.1.1Release1998)TheinitialisationofaCTS-FPrequiresaGFLtobegiventoaCTS-FP.InsomecasestheGFLneedstobecontrolledbasedonlocationinformationwithintheGSMPLMN.InformationonthepositionoftheCTS-FPwithintheDPLMNmayberequestedtoallocatethecorrectGFL.AstheCTS-FParchitecturehasnocapabilitytotransmitandreceivelikeanormalGSMMS,itcannotcarryoutadirectdialogueusingtheUminterfacewiththeGSMDPLMNandthusitsgeneralpositioncannotbeascertainedwithoutthehelpoftheCTS-MS.ThereforetheCTS-MSisusedtoprovidepositionalinformationthatcanbeusedbytheDPLMNtoallocateaGFLtotheCTS-FP.InorderthatbothDPLMNcoverageandlimitedDPLMNcoveragescenariosarecateredfor,avaliditytimeconceptisintroducedduringwhichpositionalinformationprovidedbytheCTSMSisdeemedvalid.ThisallowstheCTS-FPlocationtobeascertainedandthustheallocationoftheGFLtotheCTS-FPcanbemade.4.7.3CTSsysteminitialisationforlicenseexemptfrequencybandforCTSoperationInthiscasethefrequencyallocationforCTSusageisdefineddirectlybynationalauthorities.AlltheradioinformationrelativetoCTSusagearestoredintheCTS-FPbytheCTS-FPmanufacturer.TheseradioinformationarelinkedwithageographicalinformationwhichinformstheCTS-FPinwhichcountry(orregion)thesefrequenciescanbeused.WhentheCTS-FPisconnectedtobothmainspowerandpowersupply,theCTS-FPcanstarttomakeCTSoperations(transmitandreceivedradioburstsaccordingwithGSM-CTSspecification,enrolledCTS-MS,establishcallwithPSTNnetwork,…).Alltheseoperationsaremadeinrespectwiththeradioinformation(mainlytheCTS-GFL)definedbynationalauthoritiesandstoredintheCTS-FP.4.7.4CTSsysteminitialisationwithDPLMNcoverageandlimitedcoverageInordertoavoidthattheCTSservicebetoocumbersometoown,theinitialisationoftheCTSFPissuchthatthepreciseGFLforCTSoperationalpurposesmaybeobtainedsometimeafterCTSoperationhasbeenstarted.ThismeansthatforashortperiodoftimetheCTS-FPneednotbeusingtheGFLthatisbestsuitedtotheDPLMNenvironmentinwhichtheCTS-FPislocated.DuringthisperiodtheCTS-FPshalloperateusingareducedpoweroutput.4.7.4.1FirststageCTS-FPinitialisation(TemporaryGFLallocation)TheCTS-FPSIMshallhaveatelephonenumberwhichispreloadedbytheCTSoperatorwhentheserviceissubscribed.ThisTelephonenumberisusedbytheCTS-FPtocalltheCTS-SN.TheCTS-SNcanverifythevalidityofthesubscriptionandperformauthenticationoftheCTS-FPatthisstage.TheCTS-FPshallalsoperformthemutualauthenticationproceduresasdefinedinref[4].InmostcaseslocationinformationwillnotbeavailableonthefirstinitialisationandthustheCTS-SN/CTS-FRAshouldallocateaTemporaryGFLtoallowoperationoftheUm*interface.TheCTS-SNcanalsopassextrainformationinordertocontrolotheroperationalmodesoftheCTS-FP.AspartoftheGFLmaintenancetheCTS-FPwillbeaskedtocallbacktheCTS-SNbeforetheexpiryofthetemporaryGFL.TheCTS-FPisnowabletooperateandprovideCTSservicesusingaTemporaryGFL.TheCTS-MSneednotbepresentduringthisoperation.4.7.4.2SecondstageCTS-FPinitialisation(GFLconfirmation)AspartofthesignallingprocedurestheCTS-FPshalldemandtheCTS-MStoprovidelocationinformationtotheCTS-FPsee"9.1.2UpdateofCTSFPfrequencies".TheCTS-FPstoresthisinformationandprovidesittotheCTS-SNthenexttimetheCTS-FPcontactstheCTS-SN.TheCTS-SN/CTS-FRAusesthisinformationtoallocate/maintaintheGFLforCTSoperation.4.7.5CTSsysteminitialisationwithoutDPLMNcoverageTheinitialisationofaGFLwithoutDPLMNcoverageisFFS.SIST EN 302 405 V7.1.1:2003

ETSIETSIEN302405V7.1.1(2000-08)19(GSM03.56version7.1.1Release1998)4.7.6GFLupdateOnceaGFLisconfirmed,theGFLmaybeupdatedbytheoperatoraspartoftheregularchangeshemakesinhisfrequencyplanofthenetwork.4.7.6.1CTSFPGFLupdateSubsequentGFLallocationsneednotinvolvetheCTS-MSandcanbemadedirectlybydialoguebetweentheCTS–FPandtheCTS-SN.InorderthatfrequencyplanningoftheDPLMNcanbetakenintoaccountwhentheGFLisupdatedtheCTS-FPwiththehelpoftheCTS-MS(s)collectstheidentityofDPLMNcellswhichsurroundtheCTS-FPandreportthisinformationtotheCTS-SNasandwhencontacttotheCTS-FPismade.ThesecellsaregivenbytheCTS-FPtotheCTS-SNnetworkwhendemandedandareusedbythenetworkinthereallocationoftheGFL.TheCTS-MSsroleinthisinformationgatheringistorememberthelastcell(s)andtimethatitcampedonbeforeattachingtotheCTSFP.GFLupdateiscontrolledbytheCTSSN.ThesubsequentGFLallocationallows:• ConfirmationofthelocationoftheCTSFP;• MutualauthenticationoftheCTSFPandCTSSN(03.20);• ReallocationoftheGFLisbasedontheanalysisofthecellidentitiesandtimestampinformationandtheT_TRANSPORTtimervaluebytheCTS-FRA.ThenewGFLisvalidwhentheoldGFLexpiresunlessotherwisespecifiedbytheCTS-SN.ItshouldbealsopossibletoupdatetheoldGFLduringthisprocedure.TheCTSFPshallhandlethetwoGFLssimultaneouslyandisresponsibleforupdatingtheCTSfrequencieswiththemobilesthatareenrolled,asandwhen,theycontacttheCTSFP.4.7.7ErasureofGFLintheCTSFPTheCTSFPwilleraseaGFLwhentheperiodofvalidityforaGFLexpires.4.8De-initialisationofCTSFP4.8.1CTSOperatorcontrolmodeACTSFPwillbecomede-initialisediftheCTSFPis:• Disconnectedfromthemainspowerforaperiodoftime[10minutes];and/or• DisconnectedfromthePSTNconnectionforaperiodoftime[10minutes];and/or• WhentheCTS-SIMisremovedfromtheCTS-FP;• WhenspecificallycommandedbyCTSSN.InadditiontothisaCTS-FPwillde-initialiseitselfifafterinitialisationthereisnovalidattachmentrece
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