SIST EN 303 035-1:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Terrestrial Trunked Radio (TETRA) Harmonized EN for TETRA equipment covering essential requirements under article 3.2 of the R&TTE Directive; Part 1: Voice plus Data (V+D)33.070.10Prizemni snopovni radio (TETRA)Terrestrial Trunked Radio (TETRA)ICS:Ta slovenski standard je istoveten z:EN 303 035-1 Version 1.1.1SIST EN 303 035-1:2001en01-december-2001SIST EN 303 035-1:2001SLOVENSKI
STANDARD



SIST EN 303 035-1:2001



ETSIEN303035-1V1.1.1(2001-06)CandidateHarmonizedEuropeanStandard(Telecommunicationsseries)TerrestrialTrunkedRadio(TETRA);HarmonizedENforTETRAequipmentcoveringessentialrequirementsunderarticle3.2oftheR&TTEDirective;Part1:VoiceplusData(V+D)SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)2ReferenceDEN/TETRA-02044-1Keywordsradio,regulation,TETRA,V+DETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°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:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2001.Allrightsreserved.SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)3ContentsIntellectualPropertyRights.6Foreword.6Introduction.71Scope.92References.93Definitionsandabbreviations.113.1Definitions.113.2Abbreviations.124Technicalrequirementsspecifications.144.1Environmentalprofile.144.2Conformancerequirements.144.2.1Requirementsassociatedwithfrequencyandchannelallocation.154.2.2Requirementsassociatedwithtransmittingfunctions.164.2.3Requirementsassociatedwithreceivingfunctions.174.2.4Requirementsassociatedwithcontrolandmonitoringfunctions.184.2.4.1Requirementsfortheradiolayer.184.2.4.2RequirementsforthelowerMAClayer.194.2.4.3RequirementsfortheupperMAClayer.194.2.4.4RequirementsfortheLLClayer.224.2.4.5RequirementsfortheMLElayer.234.2.4.6RequirementsfortheMMlayer.244.2.4.7RequirementsfortheCMCElayer.254.2.4.8Requirementsforthesecurityfunctions.285Testingforcompliancewithtechnicalrequirements.295.1Environmentalconditionsfortesting.295.2Interpretationofthemeasurementresults.295.3Essentialradiotestsuites.315.3.1Referencetestspecifications.315.3.2Testconfiguration.315.3.3Radiolayertestspecification.325.3.3.1RadiolayertestspecificationforBS,MSandDM-GATE.325.3.3.1.1TestcaseindexforradiolayerforBS,MSandDM-GATE.325.3.3.1.2TestcaseselectionexpressiondefinitionsforradiolayerforBS,MSandDM-GATE.355.3.3.1.3TestsuiteparameterdefinitionsforradiolayerforBS,MSandDM-GATE.365.3.3.2RadiolayertestspecificationforTMO-REP.375.3.3.2.1TestcaseindexforradiolayerforTMO-REP.375.3.3.2.2TestcaseselectionexpressiondefinitionsforradiolayerforTMO-REP.375.3.3.2.3TestsuiteparameterdefinitionsforradiolayerforTMO-REP.375.3.4MAClayertestspecification.385.3.4.1TestsuitestructureforMAClayer.385.3.4.2TestcaseindexforMAClayer.385.3.4.3TestcaseselectionexpressiondefinitionsforMAClayer.395.3.4.4TestsuiteparameterdefinitionsforMAClayer.395.3.5LLClayertestspecification.405.3.5.1TestsuitestructureforLLClayer.405.3.5.2TestcaseindexforLLClayer.405.3.5.3TestcaseselectionexpressiondefinitionsforLLClayer.415.3.5.4TestsuiteparameterdefinitionsforLLClayer.415.3.6MobileLinkEntity(MLE)testspecification.425.3.6.1TestsuitestructureforMobileLinkEntity(MLE).425.3.6.2TestcaseindexforMobileLinkEntity(MLE).425.3.6.3TestcaseselectionexpressiondefinitionsforMobileLinkEntity(MLE).435.3.6.4TestsuiteparameterdefinitionsforMobileLinkEntity(MLE).43SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)45.3.7MobilityManagement(MM)testspecification.445.3.7.1MobilityManagement(MM)testspecificationforMS.445.3.7.1.1TestsuitestructureforMobilityManagement(MM)forMS.445.3.7.1.2TestcaseindexforMobilityManagement(MM)forMS.445.3.7.1.3TestcaseselectionexpressiondefinitionsforMobilityManagement(MM)forMS.455.3.7.1.4TestsuiteparameterdefinitionsforMobilityManagement(MM)forMS.455.3.7.2MobilityManagement(MM)testspecificationforDM-GATE.465.3.7.2.1TestsuitestructureforMobilityManagement(MM)forDM-GATE.465.3.7.2.2TestcaseindexforMobilityManagement(MM)forDM-GATE.465.3.7.2.3TestcaseselectionexpressiondefinitionsforMobilityManagement(MM)forDM-GATE.465.3.7.2.4TestsuiteparameterdefinitionsforMobilityManagement(MM)forDM-GATE.475.3.8CircuitModeControlEntity(CMCE)testspecification.475.3.8.1CircuitModeControlEntity(CMCE)testspecificationforMS.475.3.8.1.1TestsuitestructureforCircuitModeControlEntity(CMCE)forMS.475.3.8.1.2TestcaseindexforCircuitModeControlEntity(CMCE)forMS.485.3.8.1.3TestcaseselectionexpressiondefinitionsforCircuitModeControlEntity(CMCE)forMS.515.3.8.1.4TestsuiteparameterdefinitionsforCircuitModeControlEntity(CMCE)forMS.515.3.8.2CircuitModeControlEntity(CMCE)testspecificationforDM-GATE.525.3.8.2.1TestsuitestructureforCircuitModeControlEntity(CMCE)forDM-GATE.525.3.8.2.2TestcaseindexforCircuitModeControlEntity(CMCE)forDM-GATE.535.3.8.2.3TestcaseselectionexpressiondefinitionsforCircuitModeControlEntity(CMCE)forDM-GATE.545.3.8.2.4TestsuiteparameterdefinitionsforCircuitModeControlEntity(CMCE)forDM-GATE.545.3.9Securitytestspecification.555.3.9.1TestsuitestructureforV+Dsecurity.555.3.9.2TestcaseindexforV+Dsecurity.555.3.9.3TestcaseselectionexpressiondefinitionsforV+Dsecurity.555.3.9.4TestsuiteparameterdefinitionsforV+Dsecurity.56AnnexA(normative):TheENRequirementsTable(EN-RT).57A.1Generalcapabilitiesofequipment.58A.1.1Typeofequipment.58A.1.2Protocollayers.58A.1.3Modesofoperation.59A.1.4Environmentalprofile.59A.2Radiolayerrequirements.60A.2.1Radiolayercapabilitiesandfeatures.60A.2.2Radiolayerrequirementsassociatedwithfrequencyandchannelallocation.61A.2.3Radiolayerrequirementsassociatedwithtransmittingfunctions.62A.2.4Radiolayerrequirementsassociatedwithreceivingfunctions.64A.2.5Radiolayerrequirementsassociatedwithcontrolandmonitoringfunctions.65A.3MediumAccessControl(MAC)layerrequirements.65A.3.1LowerMAClayer.65A.3.2UpperMAClayer.66A.4LogicalLinkControl(LLC)layerrequirements.69A.5MobileLinkEntity(MLE)requirements.71A.6MobilityManagement(MM)requirements.72A.6.1MMrequirementsforanMS.72A.6.2MMrequirementsforaGateway.73A.7CircuitModeControlEntity(CMCE)requirements.74A.7.1CMCErequirementsforanMS.74A.7.2CMCErequirementsforaGateway.77SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)5A.8Security.79AnnexB(normative):Declarationsoncapabilitiesandparameterssupported.81B.1Radiolayer.81B.2MediumAccessControl(MAC).82B.3MobileLinkEntity(MLE).82B.4MobilityManagement(MM).83B.5CircuitModeControlEntity(CMCE).83B.6Security.84AnnexC(informative):TheENtitleintheofficiallanguages.85AnnexD(informative):Justificationsforrequirements.86AnnexE(informative):Bibliography.88History.89SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)6IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.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.ForewordThisCandidateHarmonizedEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSIProjectTerrestrialTrunkedRadio(TETRA).ThepresentdocumentisintendedtobecomeaHarmonizedStandard,thereferenceofwhichwillbepublishedintheOfficialJournaloftheEuropeanCommunitiesreferencingtheDirective1999/5/ECoftheEuropeanParliamentandoftheCouncilof9March1999onradioequipmentandtelecommunicationsterminalequipmentandthemutualrecognitionoftheirconformity("theR&TTEDirective")[1].Thepresentdocumentispart1ofamulti-partdeliverablecoveringHarmonizedENforTETRAequipmentcoveringessentialrequirementsunderarticle3.2oftheR&TTEDirective,asidentifiedbelow:Part1:"VoiceplusData(V+D)";Part2:"DirectModeOperation(DMO)".NationaltranspositiondatesDateofadoptionofthisEN:22June2001DateoflatestannouncementofthisEN(doa):30September2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31March2002DateofwithdrawalofanyconflictingNationalStandard(dow):31March2002SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)7IntroductionThepresentdocumentispartofasetofstandardsdesignedtofitinamodularstructuretocoverallradioandtelecommunicationsterminalequipmentundertheR&TTEDirective[1].Eachstandardisamoduleinthestructure.Themodularstructureisshowninfigure1.NewstandardsforhumanexposuretoElectromagneticFieldsand,ifneeded,newstandardsforacousticsafetyUseofspectrum*IfneededScopedbyequipmentclassortypeScopedbyfrequencyand/orequipmenttypeDisability*Privacy*Fraud*Noharmtothenetwork*Emergency*Interworkingviathenetwork*Interworkingwiththenetwork*Non-radioRadio(RE)Non-TTETTE3.1b3.23.3c3.3b3.3a3.3d3.3e3.3fRadioProductEMCExistingEMCstandardstobereplacedbyanew,single,multi-partstandardGenericandproductstandardsalsonotifiedunderEMCDirectiveStandardsalsonotifiedunderLVDirective3.1aNewradioharmonizedstandardsSpectrumEMCSafetyFigure1:ModularstructureforthevariousstandardsusedundertheR&TTEDirectiveSIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)8Thelefthandedgeofthefigureshowsthedifferentclausesofarticle3oftheR&TTEDirective[1].Forarticle3.3varioushorizontalboxesareshown.Dottedlinesindicatethatatthetimeofpublicationofthepresentdocument,essentialrequirementsintheseareashavetobeadoptedbytheCommission.Ifsuchessentialrequirementsareadopted,andasfarandaslongastheyareapplicable,theywilljustifyindividualstandardswhosescopeislikelytobespecifiedbyfunctionorinterfacetype.Theverticalboxesshowthestandardsunderarticle3.2fortheuseoftheradiospectrumbyradioequipment.Thescopesofthesestandardsarespecifiedeitherbyfrequency(normallyinthecasewherefrequencybandsareharmonized)orbyradioequipmenttype.Forarticle3.1bthediagramshowsthenewsinglemulti-partproductEMCstandardforradio,andtheexistingcollectionofgenericandproductstandardscurrentlyusedundertheEMCDirective[2].Thepartsofthepresentdocumentwillbecomeavailableinthesecondhalfof2000,andtheexistingseparateproductEMCstandardswillbeuseduntilitisavailable.Forarticle3.1athediagramshowstheexistingsafetystandardscurrentlyusedundertheLVDirective[3]andnewstandardscoveringhumanexposuretoelectromagneticfields.Newstandardscoveringacousticsafetymayalsoberequired.Thebottomofthefigureshowstherelationshipofthestandardstoradioequipmentandtelecommunicationsterminalequipment.Aparticularequipmentmayberadioequipment,telecommunicationsterminalequipmentorboth.Aradiospectrumstandardwillapplyifitisradioequipment.Anarticle3.3standardwillapplyaswellonlyiftherelevantessentialrequirementundertheR&TTEDirective[1]isadoptedbytheCommissionandiftheequipmentinquestioniscoveredbythescopeofthecorrespondingstandard.Thus,dependingonthenatureoftheequipment,theessentialrequirementsundertheR&TTEDirective[1]maybecoveredinasetofstandards.Themodularityprinciplehasbeentakenbecause:-itminimizesthenumberofstandardsneeded.Becauseequipmentmay,infact,havemultipleinterfacesandfunctionsitisnotpracticabletoproduceasinglestandardforeachpossiblecombinationoffunctionsthatmayoccurinanequipment;-itprovidesscopeforstandardstobeadded:-underarticle3.2whennewfrequencybandsareagreed;or-underarticle3.3shouldtheCommissiontakethenecessarydecisionswithoutrequiringalterationofstandardsthatarealreadypublished;-itclarifies,simplifiesandpromotestheusageofHarmonizedStandardsastherelevantmeansofconformityassessment.SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)91ScopeThepresentdocumentspecifiesthetechnicalcharacteristicstobeprovidedbyTErrestrialTrunkedRadio(TETRA)radioandtelecommunicationsterminalequipment,whichusestheTETRAtechnologyforTrunkedModeOperationattheairinterfacetosupporttheVoiceplusData(V+D)functionality.ThepresentdocumentappliesattheTETRAVoiceplusData(V+D)Airinterfaceofthefollowingradioandtelecommunicationsterminalequipmenttypes:1)TETRABaseStation(BS);2)TETRAMobileStation(MS);3)TETRADMOGateway(DM-GATE);4)TETRATMORepeater(TMO-REP).Itappliestoterminalequipmentoperatingwithinthefrequencyranges,allocatedtoTETRAbytheERCDecisionsERC/DEC/(96)01[21]andERC/DEC/(96)04[22].Theseradioequipmenttypesarecapableofoperatinginalloranypartofthefrequencybandsgivenbelow:Table1:RadiocommunicationsservicefrequencybandsTypeofServiceRadiocommunicationsservicefrequencybands(MHz)UplinkDownlinkEmergencyAccess,ERC/DEC/(96)01[21]380to385390to395CivilAccess,ERC/DEC/(96)04[22]410to420420to430CivilAccess,ERC/DEC/(96)04[22]870to876915to921CivilAccess,ERC/DEC/(96)04[22]450to460460to470CivilAccess,ERC/DEC/(96)04[22]385to390395to399,99ThepresentdocumentisintendedtocovertheprovisionsofDirective1999/5/EC(R&TTEDirective)[1],article3.2,whichstatesthat"….radioequipmentshallbesoconstructedthatiteffectivelyusesthespectrumallocatedtoterrestrial/spaceradiocommunicationsandorbitalresourcessoastoavoidharmfulinterference".Inadditiontothepresentdocument,otherENsthatspecifytechnicalrequirementsinrespectofessentialrequirementsunderotherpartsofarticle3oftheR&TTEDirective[1]willapplytoequipmentwithinthescopeofthepresentdocument.NOTE:AlistofsuchENsisincludedonthewebsitehttp://www.newapproach.org.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublicationand/oreditionnumberorversionnumber)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.[1]Directive1999/5/ECoftheEuropeanParliamentandoftheCouncilof9March1999onradioequipmentandtelecommunicationsterminalequipmentandthemutualrecognitionoftheirconformity(R&TTEDirective).SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)10[2]CouncilDirective89/336/EECof3May1989ontheapproximationofthelawsoftheMemberStatesrelatingtoelectromagneticcompatibility(EMCDirective).[3]CouncilDirective73/23/EECof19February1973ontheharmonizationofthelawsofMemberStatesrelatingtoelectricalequipmentdesignedforusewithincertainvoltagelimits(LVDirective).[4]ETSITS100392-2(V2.3.1,2000):"TerrestrialTrunkedRadio(TETRA);VoiceplusData(V+D);Part2:AirInterface(AI)".[5]ETSITS100392-7(V2.1.1,2000):"TerrestrialTrunkedRadio(TETRA);VoiceplusData(V+D);Part7:Security".[6]ETSIETS300392-14(Edition1,1997):"TerrestrialTrunkedRadio(TETRA);VoiceplusData(V+D);Part14:ProtocolImplementationConformanceStatement(PICS)proformaspecification".[7]ETSITS100392-15(V1.1.1,2000):"TerrestrialTrunkedRadio(TETRA);VoiceplusData(V+D);Part15:TETRAfrequencybands,duplexspacingsandchannelnumbering".[8]ETSITS100394-1(V2.3.1,2000):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part1:Radio".[9]ETSIETS300394-2-1(Edition1,1998):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part2:ProtocoltestingspecificationforVoiceplusData(V+D);Sub-part1:Testsuitestructureandtestpurposes".[10]ETSIETS300394-2-2(Edition1,1998):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part2:ProtocoltestingspecificationforVoiceplusData(V+D);Sub-part2:AbstractTestSuite(ATS)forNetwork(NWK)layer".[11]ETSIETS300394-2-3(Edition1,1998):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part2:ProtocoltestingspecificationforVoiceplusData(V+D);Sub-part3:AbstractTestSuite(ATS)forLogicalLinkControl(LLC)".[12]ETSIETS300394-2-4(Edition1,1998):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part2:ProtocoltestingspecificationforVoiceplusData(V+D);Sub-part4:AbstractTestSuite(ATS)forMediumAccessControl(MAC)".[13]ETSIETS300394-4-8(Edition1,1999):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part4:ProtocoltestingspecificationforDirectModeOperation(DMO);Sub-part8:Testsuitestructureandtestpurposes(TSS&TP)forDirectModeGateway(DM-GATE)".[14]ETSIETS300394-4-10(Edition1,1999):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part4:ProtocoltestingspecificationforDirectModeOperation(DMO);Sub-part10:AbstractTestSuite(ATS)forDirectModeGateway(DM-GATE)".[15]ETSIETS300394-5-1(Edition1,1999):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part5:Security;Sub-part1:ProtocolImplementationConformanceStatement(PICS)proformaspecification".[16]ETSIETS300394-5-2(Edition1,1999):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part5:Security;Sub-part2:ProtocoltestingspecificationforTETRAsecurity".[17]ETSIETS300394-5-3(Edition1,1999):"TerrestrialTrunkedRadio(TETRA);Conformancetestingspecification;Part5:Security;Sub-part3:AbstractTestSuite(ATS)".[18]ETSIETS300396-5(Edition1,2000):"TerrestrialTrunkedRadio(TETRA);TechnicalrequirementsforDirectModeOperation(DMO);Part5:Gatewayairinterface".[19]ETSIETS300396-8-3(Edition1,1999):"TerrestrialTrunkedRadio(TETRA);TechnicalrequirementsforDirectModeOperation(DMO);Part8:ProtocolImplementationConformanceStatement(PICS)proformaspecification;Sub-part3:GatewayAirInterface(AI)".SIST EN 303 035-1:2001



ETSIETSIEN303035-1V1.1.1(2001-06)11[20]ETSITS101789-1(V1.1.1,2000):"TerrestrialTrunkedRadio(TETRA);TMORepeaters;Part1:Requirements,testmethodsandlimits".[21]CEPTERC/DEC/(96)01:"ERCDecisionof7March1996ontheharmonizedfrequencybandtobedesignatedfortheintroductionoftheDigitalLandMobileSystemfortheEmergencyServices".[22]CEPTERC/DEC/(96)04:"ERCDecisionof7March1996onthefrequencybandsfortheintroductionoftheTransEuropeanTrunkedRadioSystem(TETRA)".[23]ETSIETR028(Edition2,1994):"RadioEquipmentandSystems(RES);Uncertaintiesinthemeasurementofmobileradioequipmentcharacteristics".3Definitionsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thetermsanddefinitionsgivenintheR&TTEDirective[1]andthefollowingapply.acknowledgeddatatransfer:serviceprovidedbythelayerbelowwhichgivesanacknowledgementbackovertheairinterfacefromthelowerlayerpeerentity.Thisserviceisusedbythelayer3entitiestogetasecuretransmissionincludingre-transmissionsannouncedcellre-selection:cellre-selectionwhereMS-MLEinformstheSwMIbothintheoldcell(leavingcell)andinthenewcell(arrivingcell)thatcellchangeisperformedAssociatedControlCHannel(ACCH):dedicatedsignallingchannelassociatedwithachannelthathasbeenassignedforcircuitmodetraffic.ItcomprisestheFastAssociatedControlCHannel(FACCH),whichusesframes1to18whenthereisnotrafficinagivendirection,ortheSlowAssociatedControlCHannel(SACCH),whichisalwaysavailableinframe18whenthereistrafficattached:aMSissaidtobeattachedtoacellwhentheMSiscampedandregisteredonthecell.TheMSmaybeinidlemode(i.e.notactivelyprocessingatransaction)orinactivemode(i.e.activelyprocessingatransactioninreceptionand/orintransmission).ItistheMM,whichdecideswhenaMSissaidtobeattachedbasiclink:bi-directionalconnectionlesspathbetweenoneorseveralMSandaBS,withaprovisionofbothunacknowledgedandacknowledgedservicesonasinglemessagebasisbroadcast:unidirectionalpointtomulti-pointmodeoftransmissioncellre-selection:actofchangingtheservingcellfromanoldcelltoanewcell.Thecellre-selectionisperformedbyprocedureslocatedintheMLEandintheMAC.Whenthere-selectionismadeandpossibleregistrationisperformed,theMSissaidtobeattachedtothecellcommoncontrolchannels:controlchannelstransmittedbytheinfrastructuretocontroltheMSpopulation.TheycomprisetheMainControlChannel(MCCH)andcommonSecondaryControlChannels(SCCH)DirectModeGATEway(DM-GATE):devicewhichprovidesgatewayconnectivitybetweenaDirectModeMobileStationandtheTETRAV+Dnetwork.Thegatewayprovidestheinterfac
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