ETSI EN 300 908 V8.3.1 (2000-09)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital cellular telecommunications system (Phase 2+) (GSM); Multiplexing and multiple access on the radio path (GSM 05.02 version 8.3.1 Release 1999)33.070.50Globalni sistem za mobilno telekomunikacijo (GSM)Global System for Mobile Communication (GSM)ICS:Ta slovenski standard je istoveten z:EN 300 908 Version 8.3.1SIST EN 300 908 V8.3.1:2003en01-december-2003SIST EN 300 908 V8.3.1:2003SLOVENSKI
STANDARD
ETSIEN300908V8.3.1(2000-09)EuropeanStandard(Telecommunicationsseries)Digitalcellulartelecommunicationssystem(Phase2+);Multiplexingandmultipleaccessontheradiopath(GSM05.02version8.3.1Release1999)GLOBALSYSTEMFORMOBILECOMMUNICATIONSRSIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)2(GSM05.02version8.3.1Release1999)ReferenceREN/SMG-020502Q8R1KeywordsDigitalcellulartelecommunicationssystem,GlobalSystemforMobilecommunications(GSM)ETSI650RoutedesLuciolesF-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.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)3(GSM05.02version8.3.1Release1999)ContentsIntellectualPropertyRights.6Foreword.61Scope.71.1References.71.2Abbreviations.82General.83Logicalchannels.83.1General.83.2Trafficchannels.83.2.1General.83.2.2Speechtrafficchannels.93.2.3Circuitswitcheddatatrafficchannels.93.2.4Packetdatatrafficchannels(PDTCH).93.3Controlchannels.93.3.1General.93.3.2Broadcastchannels.93.3.2.1Frequencycorrectionchannels(FCCHandCFCCH).93.3.2.2Synchronizationchannels.103.3.2.2.1Synchronizationchannel(SCH).103.3.2.2.2COMPACTsynchronizationchannel(CSCH).103.3.2.3Broadcastcontrolchannel(BCCH).113.3.2.4PacketBroadcastControlChannels.113.3.2.4.1PacketBroadcastControlChannel(PBCCH).113.3.2.4.2COMPACTPacketBroadcastControlChannel(CPBCCH).123.3.3Commoncontroltypechannels.123.3.3.1Commoncontroltypechannels,knownwhencombinedasacommoncontrolchannel(CCCH).123.3.3.2PacketCommoncontrolchannels.123.3.3.2.1PacketCommonControlChannels(PCCCH).123.3.3.2.2COMPACTCommonControlChannels(CPCCCH).133.3.4Dedicatedcontrolchannels.133.3.4.1Circuitswitcheddedicatedcontrolchannels.133.3.4.2Packetdedicatedcontrolchannels.133.3.5CellBroadcastChannel(CBCH).133.3.6CTScontrolchannels.133.3.6.1CTSbeaconchannel(BCH).143.3.6.2CTSpagingchannel(CTSPCH).143.3.6.3CTSaccessrequestchannel(CTSARCH).143.3.6.4CTSaccessgrantchannel(CTSAGCH).143.4Combinationofchannels.144Thephysicalresource.144.1General.144.2Radiofrequencychannels.154.2.1Cellallocationandmobileallocation.154.2.2Downlinkanduplink.154.3Timeslots,TDMAframes,andtimegroups.154.3.1General.154.3.2Timeslotnumber.154.3.3TDMAframenumber.164.3.4Timegroup.165Physicalchannels.165.1General.165.2Bursts.165.2.1General.16SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)4(GSM05.02version8.3.1Release1999)5.2.2Typesofburstandbursttiming.175.2.3Normalburst(NB).175.2.4Frequencycorrectionburst(FB).195.2.5SynchronizationBurst(SB).195.2.6Dummyburst.205.2.7Accessburst(AB).205.2.8Guardperiod.215.3Physicalchannelsandbursts.215.4Radiofrequencychannelsequence.215.5TimeslotandTDMAframesequence.215.6Parametersforchanneldefinitionandassignment.225.6.1General.225.6.2Generalparameters.225.6.3Specificparameters.226Mappingoflogicalchannelsontophysicalchannels.226.1General.226.2Mappinginfrequencyoflogicalchannelsontophysicalchannels.236.2.1General.236.2.2Parameters.236.2.3Hoppingsequencegeneration.246.2.4Specificcases.256.2.5Changeinthefrequencyallocationofabasetransceiverstation.256.2.6FrequencyassignmentinCTS.256.3Mappingintimeoflogicalchannelsontophysicalchannels.266.3.1Mappingintimeofcircuitswitchedlogicalchannelsontophysicalchannels.266.3.1.1General.266.3.1.2Keytothemappingtableofclause7.266.3.1.3MappingofBCCHdata.266.3.1.4MappingofSIDFrames.286.3.2Mappingintimeofpacketlogicalchannelsontophysicalchannels.286.3.2.1General.286.3.2.2Mappingoftheuplinkchannels.286.3.2.2.1Mappingofuplinkpackettrafficchannel(PDTCH/U)andPACCH/U.286.3.2.2.2MappingofthePacketTimingAdvanceControlChannel(PTCCH/U).296.3.2.2.3MappingoftheuplinkPCCCHi.e.PRACH.296.3.2.2.3aMappingoftheCOMPACTuplinkCPCCCHi.e.CPRACH.296.3.2.3Mappingofthedownlinkchannels.296.3.2.3.1Mappingofthe(PDTCH/D)andPACCH/D.296.3.2.3.2MappingofthePTCCH/D.296.3.2.3.3MappingofthePBCCH.296.3.2.3.3aMappingoftheCOMPACTCPBCCH.306.3.2.3.4MappingofthePCCCH.306.3.2.3.4aMappingoftheCOMPACTCPCCCH.306.3.2.4MappingofPBCCHdata.306.3.2.4aMappingofCOMPACTCPBCCHdata.316.3.3MappingintimeofCTScontrolchannelsontophysicalchannels.316.3.3.1CTSBCHtimeslotassignment.316.3.3.2CTSPCH,CTSARCHandCTSAGCHtimeslotassignment.346.4Permittedchannelcombinations.346.4.1Permittedchannelcombinationsontoabasicphysicalchannel.346.4.2Multislotconfigurations.356.4.2.1Multislotconfigurationsforcircuitswitchedconnections.356.4.2.2Multislotconfigurationsforpacketswitchedconnections.356.5Operationofchannelsandchannelcombinations.366.5.1General.366.5.2DeterminationofCCCH_GROUPandPAGING_GROUPforMSinidlemode.386.5.3Determinationofspecificpagingmultiframeandpagingblockindex.386.5.4ShortMessageServiceCellBroadcast(SMSCB).396.5.5Voicegroupandvoicebroadcastcallnotifications.396.5.6DeterminationofPCCCH_GROUPandPAGING_GROUPforMSinGPRSattachedmode.406.5.7DeterminationofCTS_PAGING_GROUPandspecificpaging52-multiframeforMSinCTSmode.41SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)5(GSM05.02version8.3.1Release1999)AnnexA(normative):Phase2mobilesinaPhase1infrastructure.61A.1Scope.61A.2ImplementationoptionsforTCHchannels.61A.2.1C0fillingontheTCH.61A.2.1.1Adummyburstwith(BN61,BN62,BN86)=trainingsequencebitsofnormalbursts.61A.2.1.2Adummyburstwiththe"C0fillingtrainingsequence.61A.2.1.3Adummyburstwith(BN61,BN62,BN86)mappedfromtheTSCbitsofnormalburstsaccordingtothetable;below.61A.2.1.4PartialSIDinformation.61A.2.2Halfburstfilling.61A.2.2.1PartialSIDinformationfromanyassociatedSIDframe;or.62A.2.2.2Themixedbitsofthedummybursts(encryptedornotencrypted).62A.2.3DummyburstStealingflag.62A.2.4HalfburstFillingStealingflag.62A.2.5Allowedcombinations.62A.3IdleChannels.62AnnexB(normative):Multislotcapability.63B.1MSclassesformultislotcapability.63B.2Constraintsimposedbytheserviceselected.65B.3NetworkrequirementsforsupportingMSmultislotclasses.65AnnexC(informative):CTSBCHTimeslotshiftingexample.68AnnexD(informative):COMPACTmultiframestructureexamples.69AnnexE(informative):Changecontrolhistory.77History.79SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)6(GSM05.02version8.3.1Release1999)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).Thepresentdocumentdefinesthephysicalchannelsoftheradiosub-systemrequiredtosupportthelogicalchannelsofthedigitalmobilecellularandpersonalcommunicationsystemsoperatinginthe900MHzand1800MHzband(GSM900andDCS1800).ThecontentsofthepresentdocumentaresubjecttocontinuingworkwithinSMGandmaychangefollowingformalSMGapproval.ShouldSMGmodifythecontentsofthepresentdocumentitwillthenberepublishedbyETSIwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:Version8.x.ywhere:8indicatesrelease1999ofGSMPhase2+.xtheseconddigitisincrementedforchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.ythethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthespecification.NationaltranspositiondatesDateofadoptionofthepresentdocument:25August2000Dateoflatestannouncementofthepresentdocument(doa):30November2000DateoflatestpublicationofnewNationalStandardorendorsementofthepresentdocument(dop/e):31May2001DateofwithdrawalofanyconflictingNationalStandard(dow):31May2001SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)7(GSM05.02version8.3.1Release1999)1ScopeThepresentdocumentdefinesthephysicalchannelsoftheradiosub-systemrequiredtosupportthelogicalchannels.Itincludesadescriptionofthelogicalchannelsandthedefinitionoffrequencyhopping,TDMAframes,timeslotsandbursts.1.1References• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.• ForthisRelease1999document,referencestoGSMdocumentsareforRelease1999versions(version8.x.y).[1]GSM01.04:"Digitalcellulartelecommunicationssystem(Phase2+);Abbreviationsandacronyms".[2]GSM03.03:"Digitalcellulartelecommunicationssystem(Phase2+);Numbering,addressingandidentification".[3]GSM04.03:"Digitalcellulartelecommunicationssystem(Phase2+);MobileStation-BaseStationSystem(MS-BSS)interfaceChannelstructuresandaccesscapabilities".[4]GSM04.06:"Digitalcellulartelecommunicationssystem(Phase2+);MobileStation-BaseStationSystem(MS-BSS)interfaceDataLink(DL)layerspecification".[5]GSM04.08:"Digitalcellulartelecommunicationssystem(Phase2+);Mobileradiointerfacelayer3specification".[6]GSM05.03:"Digitalcellulartelecommunicationssystem(Phase2+);Channelcoding".[7]GSM05.04:"Digitalcellulartelecommunicationssystem;Modulation".[8]GSM05.05:"Digitalcellulartelecommunicationssystem(Phase2+);Radiotransmissionandreception".[9]GSM05.08:"Digitalcellulartelecommunicationssystem(Phase2+);Radiosubsystemlinkcontrol".[10]GSM05.10:"Digitalcellulartelecommunicationssystem(Phase2+);Radiosubsystemsynchronization".[11]GSM03.64:"Digitalcellulartelecommunicationssystem(Phase2+);GeneralPacketRadioService(GPRS);OveralldescriptionoftheGPRSRadioInterface;Stage2".[12]GSM04.60:"Digitalcellulartelecommunicationssystem(Phase2+);GeneralPacketRadioService(GPRS);MobileStation(MS)-BaseStationSystem(BSSinterface;RadioLinkControl(RLC)andMediumAccessControl(MAC)LayerSpecification".[13]GSM03.52:"Digitalcellulartelecommunicationssystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1;LowerlayersoftheCTSRadioInterface;Stage2".[14]GSM04.56:"Digitalcellulartelecommunicationssystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1;CTSradiointerfacelayer3specification".SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)8(GSM05.02version8.3.1Release1999)[15]GSM05.56:"Digitalcellulartelecommunicationssystem(Phase2+);GSMCordlessTelephonySystem(CTS),Phase1;CTS-FPradiosubsystem".1.2AbbreviationsAbbreviationsusedinthepresentdocumentarelistedinGSM01.04[1].2GeneralTheradiosubsystemisrequiredtosupportacertainnumberoflogicalchannelsthatcanbeseparatedintotwocategoriesasdefinedinGSM04.03:i)thetrafficchannels(TCH's);ii)thecontrolchannels.Moreinformationisgivenabouttheselogicalchannelsinclause3whichalsodefinesanumberofspecialchannelsusedbytheradiosub-system.Clause4ofthepresentdocumentdescribesthephysicalresourceavailabletotheradiosub-system,clause5definesphysicalchannelsbasedonthatresourceandclause6specifieshowthelogicalchannelsshallbemappedontophysicalchannels.Figure1depictsthisprocess.3Logicalchannels3.1GeneralThisclausedescribesthelogicalchannelsthataresupportedbytheradiosubsystem.3.2Trafficchannels3.2.1GeneralTrafficchannels(TCH's)areintendedtocarryeitherencodedspeechoruserdataincircuitswitchedmode.Twogeneralformsoftrafficchannelaredefined:i)Fullratetrafficchannel(TCH/F).Thischannelcarriesinformationatagrossrateof22,8kbit/s.ii)Halfratetrafficchannel(TCH/H).Thischannelcarriesinformationatagrossrateof11,4kbit/s.iii)Enhancedcircuitswitchedfullratetrafficchannel(E-TCH/F).Thischannelcarriesinformationatagrossrateof69,6kbit/sincludingthestealingsymbols.Packetdatatrafficchannels(PDTCH's)areintendedtocarryuserdatainpacketswitchedmode.Forthepurposeofthepresentdocument,anyreferencetotrafficchanneldoesnotapplytoPDTCHunlessexplicitlystated.Alltrafficchannelsarebi-directionalunlessotherwisestated.Unidirectionaldownlinkfullratechannels,TCH/FD,aredefinedasthedownlinkpartofthecorrespondingTCH/F.MultiplefullratechannelscanbeallocatedtothesameMS.Thisisreferredtoasmultislotconfigurations,whichisdefinedinsubclause6.4.2.1.MultiplepacketdatatrafficchannelscanbeallocatedtothesameMS.Thisisreferredtoasmultislotpacketconfigurations,asdefinedinsubclause6.4.2.2.Thespecifictrafficchannelsavailableinthecategoriesofspeechanduserdataaredefinedinthesubclausesfollowing.SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)9(GSM05.02version8.3.1Release1999)3.2.2SpeechtrafficchannelsThefollowingtrafficchannelsaredefinedtocarryencodedspeech:i)Fullratetrafficchannelforspeech(TCH/FS).ii)Halfratetrafficchannelforspeech(TCH/HS).iii)Enhancedfullratetrafficchannelforspeech(TCH/EFS).iv)Adaptivefullratetrafficchannelforspeech(TCH/AFS).v)Adaptivehalfratetrafficchannelforspeech(TCH/AHS).3.2.3CircuitswitcheddatatrafficchannelsThefollowingtrafficchannelsaredefinedtocarryuserdata:i)Fullratetrafficchannelfor9,6kbit/suserdata(TCH/F9.6).ii)Fullratetrafficchannelfor4,8kbit/suserdata(TCH/F4.8).iii)Halfratetrafficchannelfor4,8kbit/suserdata(TCH/H4.8).iv)Halfratetrafficchannelfor≤2,4kbit/suserdata(TCH/H2.4).v)Fullratetrafficchannelfor≤2,4kbit/suserdata(TCH/F2.4).vi)Fullratetrafficchannelfor14,4kbit/suserdata(TCH/F14.4).vii)Enhancedcircuitswitchedfullratetrafficchannelfor28,8kbit/suserdata(E-TCH/F28.8)viii)Enhancedcircuitswitchedfullratetrafficchannelfor32,0kbit/suserdata(E-TCH/F32.0)ix)Enhancedcircuitswitchedfullratetrafficchannelfor43.2kbit/suserdata(E-TCH/F43.2)3.2.4Packetdatatrafficchannels(PDTCH)APDTCHcorrespondstotheresourceallocatedtoasingleMSononephysicalchannelforuserdatatransmission.Duetothedynamicmultiplexingontothesamephysicalchannelofdifferentlogicalchannels(seesubclause6.3.2),aPDTCHusingGMSKmodulationcarriesinformationataninstantaneousbitraterangingfrom0to22.8kbit/s.APDTCHusing8PSKmodulationcarriesinformation(includingstealingsymbols)ataninstantaneousbitraterangingfrom0to69.6kbit/s.Allpacketdatatrafficchannelsareuni-directional,eitheruplink(PDTCH/U),foramobileoriginatedpackettransferordownlink(PDTCH/D)foramobileterminatedpackettransfer.3.3Controlchannels3.3.1GeneralControlchannelsareintendedtocarrysignallingorsynchronizationdata.Fourcategoriesofcontrolchannelaredefined:broadcast,common,dedicatedandCTScontrolchannels.Specificchannelswithinthesecategoriesaredefinedinthesubclausesfollowing.3.3.2Broadcastchannels3.3.2.1Frequencycorrectionchannels(FCCHandCFCCH)Thefrequencycorrectionchannelcarriesinformationforfrequencycorrectionofthemobilestation.Itisrequiredonlyfortheoperationoftheradiosub-system.DifferentmappingisusedforFCCHandCOMPACTCFCCH(seeclause7).SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)10(GSM05.02version8.3.1Release1999)3.3.2.2SynchronizationchannelsThesynchronizationchannelcarriesinformationforframesynchronizationofthemobilestationandidentificationofabasetransceiverstation.Itisrequiredonlyfortheoperationoftheradiosub-system.DifferentchannelsareusedforSCHandCOMPACTCSCH.3.3.2.2.1Synchronizationchannel(SCH)Specificallythesynchronizationchannel(SCH)shallcontaintwoencodedparameters:a)Basetransceiverstationidentitycode(BSIC):6bits(beforechannelcoding)consistsof3bitsofPLMNcolourcodewithrange0to7and3bitsofBScolourcodewithrange0to7asdefinedinGSM03.03.b)ReducedTDMAframenumber(RFN):19bits(beforechannelcoding)=T1(11bits)range0to2047=FNdiv(26x51)T2(5bits)range0to25=FNmod26T3'(3bits)range0to4=(T3-1)div10whereT3(6bits)range0to50=FNmod51andFN=TDMAframenumberasdefinedinsubclause4.3.3.GSM04.06andGSM04.08specifytheprecisebitordering,GSM05.03thechannelcodingoftheaboveparametersandGSM05.10defineshowtheTDMAframenumbercanbecalculatedfromT1,T2,andT3'.3.3.2.2.2COMPACTsynchronizationchannel(CSCH)TheCOMPACTpacketsynchronizationchannelCSCHshallcontaintwoencodedparameters:a)Basetransceiverstationidentitycode(BSIC):6bits(beforechannelcoding)consistsof3bitsofPLMNcolourcodewithrange0to7and3bitsBScolourcodewithrange0to7asdefinedinGSM03.03.b)ReducedTDMAframenumber(RFN):19bits(beforechannelcoding)=R1(10bits)range0to1023=FNdiv(51x52)R2(6bits)range0to50=(FNdiv52)mod51TG(2bits)range0to3Reserved(1bit)whereFN=TDMAframenumberasdefinedinsubclause4.3.3andTG=timegroupasdefinedinsubclause4.3.4.GSM04.06andGSM04.08specifytheprecisebitordering,GSM05.03thechannelcodingoftheaboveparametersandGSM05.10defineshowtheTDMAframenumbercanbecalculatedfromR1andR2.SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)11(GSM05.02version8.3.1Release1999)3.3.2.3Broadcastcontrolchannel(BCCH)Thebroadcastcontrolchannelbroadcastsgeneralinformationonabasetransceiverstationperbasetransceiverstationbasis.OfthemanyparameterscontainedintheBCCH,theuseofthefollowingparameters,asdefinedinGSM04.08arereferredtoinsubclause6.5:a)CCCH_CONFwhichindicatestheorganizationofthecommoncontrolchannels:Fromthisparameter,thenumberofcommoncontrolchannels(BS_CC_CHANS)andwhetherornotCCCHorSDCCHarecombined(BS_CCCH_SDCCH_COMB=trueorfalse)arederivedasfollows:CCCH_CONFBS_CC_CHANSBS_CCCH_SDCCH_COMB0001false0011true0102false1003false1104falseb)BS_AG_BLKS_RESwhichindicatesthenumberofblocksoneachcommoncontrolchannelreservedforaccessgrantmessages:3bits(beforechannelcoding)range0to7.c)BS_PA_MFRMSwhichindicatesthenumberof51-multiframesbetweentransmissionofpagingmessagestomobilesofthesamepaginggroup:3bits(beforechannelcoding)range2to9.d)supportofGPRSTheBCCHshallindicatewhetherornotpacketswitchedtrafficissupported.IfpacketswitchedtrafficissupportedandifthePBCCHexists,thentheBCCHshallbroadcastthepositionofthepacketdatachannel(PDCH),asdefinedinsubclause6.3.2.1,carryingthePBCCH.3.3.2.4PacketBroadcastControlChannels3.3.2.4.1PacketBroadcastControlChannel(PBCCH)ThePBCCHbroadcastsparametersusedbytheMStoaccessthenetworkforpackettransmissionoperation.InadditiontothoseparametersthePBCCHreproducestheinformationtransmittedontheBCCHtoallowcircuitswitchedoperation,suchthataMSinGPRSattachedmodemonitorsthePBCCHonly,ifitexists.TheexistenceofthePBCCHinthecellisindicatedontheBCCH.IntheabsenceofPBCCH,theBCCHshallbeusedtobroadcastinformationforpacketoperation.OfthemanyparameterscontainedinthePBCCH,theuseofthefollowingparameters,asdefinedinGSM04.60arereferredtoinsubclause6.5and6.3.2:a)BS_PBCCH_BLKS(1,.,4)indicatesthenumberofblocksallocatedtothePBCCHinthemultiframe.ThepositionofthePBCCHblocksisbasedontheorderedlistasdefinedinsubclause6.3.2.1.b)BS_PCC_CHANSindicatesthenumberofphysicalchannelscarryingPCCCHsincludingthephysicalchannelcarryingthePBCCHc)BS_PAG_BLKS_RESindicatesthenumberofblocksoneachPDCHcarryingPCCCHpermultiframewhereneitherpacketpagingnorPBCCHshouldappear.ThisnumbercorrespondsthereforetothenumberofblocksreservedforPAGCH,PNCH,PDTCHandPACCH.Thepositionoftheseblocksisbasedontheorderedlistasdefinedinsubclause6.3.2.1.d)BS_PRACH_BLKSindicatesthenumberofblocksreservedinafixedwaytothePRACHchannelonanyPDCHcarryingPCCCH.ThepositionofthePRACHblocksisbasedontheorderedlistasdefinedinsubclause6.3.2.1.SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)12(GSM05.02version8.3.1Release1999)3.3.2.4.2COMPACTPacketBroadcastControlChannel(CPBCCH)TheCPBCCHisastand-alonepacketcontrolchannelforCOMPACT.TheCPBCCHbroadcastsparametersusedbytheMStoaccessthenetworkforpackettransmissionoperation.OfthemanyparameterscontainedintheCPBCCH,theuseofthefollowingparameters,asdefinedinGSM04.60arereferredtoinsubclause6.5and6.3.3:a)BS_PBCCH_BLKS(1,…,4)indicatesthenumberofblocksallocatedtotheCPBCCHinthemultiframe.ThepositionoftheCPBCCHblocksisbasedontheorderedlistasdefinedinsubclause6.3.2.1.b)BS_PCC_CHANSindicatesthenumberofradiofrequencychannelspercellcarryingCPCCCHsincludingtheradiofrequencychannelcarryingtheCPBCCH.c)BS_PAG_BLKS_RESindicatesthenumberofblocksoneachradiofrequencychannelcarryingCPCCCHpermultiframewhereneitherpacketpagingnorCPBCCHshouldappear.ThisnumbercorrespondsthereforetothenumberofblocksreservedforCPAGCH,CPNCH,PDTCH,andPACCH.Thepositionoftheseblocksisbasedontheorderedlistasdefinedinsubclause6.3.2.1.BS_PAG_BLKS_REScannotbegreaterthan8.d)BS_PRACH_BLKSindicatesthenumberofblocksreservedinafixedwaytotheCPRACHchannelonanyradiofrequencychannelcarryingCPCCCH.ThepositionoftheCPRACHblocksisbasedontheorderedlistasdefinedinsubclause6.3.2.1.e)NIB_CPBCCH_0,NIB_CPBCCH_1,NIB_CPBCCH_2,andNIB_CPBCCH_3indicatethenumberofdownlinkblockspermultiframedesignatedasidletoprotectCPBCCHblocksfornon-servingtimegroups.Thedownlinkpositionisbasedontheorderedlistandrotationruleasdefinedinsubclause6.3.2.1.f)NIB_CPCCCH_0,NIB_CPCCCH_1,NIB_CPCCCH_2,andNIB_CPCCCH_3indicatethenumberofdownlinkblockspermultiframedesignatedasidletoprotectCPCCCHfornon-servingtimegroups.Thedownlinkpositionisbasedontheorderofthepagingchannelblocks(seeClause7table7)androtatesaccordingtosubclause6.3.2.1.TheindicationsapplyforallCOMPACTcarrierscarryingCPCCCH.g)LARGE_CELL_OPindicateswhichtypeofcellsizeisused:nominalorlarge.3.3.3Commoncontroltypechannels3.3.3.1Commoncontroltypechannels,knownwhencombinedasacommoncontrolchannel(CCCH)i)Pagingchannel(PCH):Downlinkonly,usedtopagemobiles.ii)Randomaccesschannel(RACH):Uplinkonly,usedtorequestallocationofaSDCCH.iii)Accessgrantchannel(AGCH):Downlinkonly,usedtoallocateaSDCCHordirectlyaTCH.iv)Notificationchannel(NCH):Downlinkonly,usedtonotifymobilestationsofvoicegroupandvoicebroadcastcalls.3.3.3.2PacketCommoncontrolchannels3.3.3.2.1PacketCommonControlChannels(PCCCH)i)PacketPagingchannel(PPCH):Downlinkonly,usedtopageMS.ii)PacketRandomaccesschannel(PRACH):Uplinkonly,usedtorequestallocationofoneorseveralPDTCHs(foruplinkordownlinkdirection).iii)PacketAccessgrantchannel(PAGCH):Downlinkonly,usedtoallocateoneorseveralPDTCH.iv)PacketNotificationchannel(PNCH):Downlinkonly,usedtonotifyMSofPTM-Mcall.IfaPCCCHisnotallocated,theinformationforpacketswitchedoperationistransmittedontheCCCH.IfaPCCCHisallocated,itmaytransmitinformationforcircuitswitchedoperation.SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)13(GSM05.02version8.3.1Release1999)3.3.3.2.2COMPACTCommonControlChannels(CPCCCH)i)PacketPagingchannel(CPPCH):Downlinkonly,usedtopageMS.ii)PacketRandomaccesschannel(CPRACH):Uplinkonly,usedtorequestallocationofoneorseveralPDTCHs(foruplinkordownlinkdirection).iii)PacketAccessgrantchannel(CPAGCH):Downlinkonly,usedtoallocateoneorseveralPDTCH.iv)PacketNotificationchannel(CPNCH):Downlinkonly,usedtonotifyMSofPTM-Mcall.3.3.4Dedicatedcontrolchannels3.3.4.1Circuitswitcheddedicatedcontrolchannelsi)Slow,TCH/ForE-TCH/Fassociated,controlchannel(SACCH/TF).ii)Fast,TCH/Fassociated,controlchannel(FACCH/F).iii)Slow,TCH/Hassociated,controlchannel(SACCH/TH).iv)Fast,TCH/Hassociated,controlchannel(FACCH/H).v)Standalonededicatedcontrolchannel(SDCCH/8).vi)Slow,SDCCH/8associated,controlchannel(SACCH/C8)vii)Standalonededicatedcontrolchannel,combinedwithCCCH(SDCCH/4).viii)Slow,SDCCH/4associated,controlchannel(SACCH/C4).ix)Slow,TCH/ForE-TCH/Fassociated,controlchannelformultislotconfigurations(SACCH/M).vi)Slow,TCH/Fassociated,controlchannelforCTS(SACCH/CTS).vii)Fast,E-TCH/Fassociated,controlchannel(E-FACCH/F).viii)Inband,E-TCH/Fassociated,controlchannel(E-IACCH/F)Allassociatedcontrolchannelshavethesamedirection(bi-directionalorunidirectional)asthechannelstheyareassociatedto.TheunidirectionalSACCH/MDisdefinedasthedownlinkpartofSACCH/M.3.3.4.2Packetdedicatedcontrolchannelsi)ThePacketAssociatedControlchannel(PACCH):ThePACCHisbi-directional.FordescriptionpurposesPACCH/UisusedfortheuplinkandPACCH/Dforthedownlink.ii)PacketTimingadvancecontrolchanneluplink(PTCCH/U):UsedtotransmitrandomaccessburststoallowestimationofthetimingadvanceforoneMSinpackettransfermode.iii)PacketTimingadvancecontrolchanneldownlink(PTCCH/D):UsedtotransmittimingadvanceupdatesforseveralMS.OnePTCCH/DispairedwithseveralPTCCH/U's.3.3.5CellBroadcastChannel(CBCH)TheCBCH,downlinkonly,isusedtocarrytheshortmessageservicecellbroadcast(SMSCB).TheCBCHusesthesamephysicalchannelastheSDCCH.3.3.6CTScontrolchannelsFourtypesofCTScontrolchannelsaredefined:SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)14(GSM05.02version8.3.1Release1999)3.3.6.1CTSbeaconchannel(BCH)TheBCHisusedtoprovidefrequencyandsynchronizationinformationinthedownlink.ItismadeupofapairofCTSBCH-SB(Synchronizationburst)andCTSBCH-FB(Frequencycorrectionburst).TheCTSBCH-FBcarriesinformationforfrequencycorrectionofthemobilestation.Itisrequiredonlyfortheoperationoftheradiosub-system.TheCTSBCH-SBcarriessignallinginformationandidentificationofaCTS-FP.SpecificallytheCTSBCH-SBshallcontainfiveencodedparameters:a)StatusoftheCTS-FPradioresources:1bit(beforechannelcoding)b)FlagindicatingthepresenceofCTSPCHinthenext52-multiframe:1bit(beforechannelcoding)c)FlagindicatingwhethertheCTS-FPiscurrentlyperformingtimeslotshiftingonCTSBCH:1bit(beforechannelcoding)d)CTScontrolchannels(exceptCTSBCH)timeslotnumberforthenext52-multiframe(TNC):3bits(beforechannelcoding)e)CTS-FPbeaconidentity(FPBI):19bits(beforechannelcoding),asdefinedinGSM03.03.GSM04.56specifiestheprecisebitorderingandGSM05.03thechannelcodingoftheaboveparameters.3.3.6.2CTSpagingchannel(CTSPCH)Downlinkonly,usedtobroadcastinformationforpaging.3.3.6.3CTSaccessrequestchannel(CTSARCH)Uplinkonly,usedtorequestallocationofadedicatedRRconnection.3.3.6.4CTSaccessgrantchannel(CTSAGCH)Downlinkonly,usedtograntadedicatedRRconnection.3.4CombinationofchannelsOnlycertaincombinationsofchannelsareallowedasdefinedinGSM04.03.Subclause6.4liststhecombinationsinrelationtobasicphysicalchannels.4Thephysicalresource4.1GeneralThephysicalresourceavailabletotheradiosub-systemisanallocationofpartoftheradiospectrum.Thisresourceispartitionedbothinfrequencyandtime.Frequencyispartitionedbyradiofrequencychannels(RFCHs)dividedintobandsasdefinedinGSM05.05.Timeispartitionedbytimeslots,TDMAframes,and(forCOMPACT)timegroupsand52-multiframenumberasdefinedinsubclause4.3ofthepresentdocument.SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)15(GSM05.02version8.3.1Release1999)4.2Radiofrequencychannels4.2.1CellallocationandmobileallocationGSM05.05definesradiofrequencychannels(RFCHs),andallocatesnumberstoalltheradiofrequencychannelsavailabletothesystem.Eachcellisallocatedasubsetofthesechannels,definedasthecellallocation(CA).OneradiofrequencychannelofthecellallocationshallbeusedtocarrysynchronizationinformationandtheBCCH,thisshallbeknownasBCCHcarrier.Thesubsetofthecellallocation,allocatedtoaparticularmobile,shallbeknownasthemobileallocation(MA).ForCOMPACT,oneradiofrequencychannelofthecellallocationshallbeusedtocarrysynchronizationinformationandtheCPBCCH,thisshallbeknownastheprimaryCOMPACTcarrier.AllotherradiofrequencychannelsofthecellallocationshallbeknownassecondaryCOMPACTcarriers.4.2.2DownlinkanduplinkThedownlinkcomprisesradiofrequencychannelsusedinthebasetransceiverstationtoMobileStationdirection.Theuplinkcomprisesradiofrequencychannelsusedinthemobilestationtobasetransceiverstationdirection.4.3Timeslots,TDMAframes,andtimegroups4.3.1GeneralAtimeslotshallhaveadurationof3/5200seconds(≈577µs).EighttimeslotsshallformaTDMAframe(≈4,62msinduration).AtthebasetransceiverstationtheTDMAframesonalloftheradiofrequencychannelsinthedownlinkshallbealigned.Thesameshallapplytotheuplink(seeGSM05.10).AtthebasetransceiverstationthestartofaTDMAframeontheuplinkisdelayedbythefixedperiodof3timeslotsfromthestartoftheTDMAframeonthedownlink(seefigure2).Atthemobilestationthisdelaywillbevariabletoallowadjustmentforsignalpropagationdelay.TheprocessofadjustingthisadvanceisknownasadaptiveframealignmentandisdetailedinGSM05.10.ThestaggeringofTDMAframesusedinthedownlinkanduplinkisinordertoallowthesametimeslotnumbertobeusedinthedownlinkanduplinkwhilstavoidingtherequirementforthemobilestationtotransmitandreceivesimultaneously.Theperiodincludestimeforadaptiveframealignment,transceivertuningandreceive/transmitswitching(seefigure4).4.3.2TimeslotnumberThetimeslotswithinaTDMAframeshallbenumberedfrom0to7andaparticulartimeslotshallbereferredtobyitstimeslotnumber(TN).SIST EN 300 908 V8.3.1:2003

ETSIETSIEN300908V8.3.1(2000-09)16(GSM05.02version8.3.1Release1999)4.3.3TDMAframenumberTDMAframesshallbenumberedbyaframenumber(FN).Theframenumbershallbecyclicandshallhavearangeof0toFN_MAXwhereFN_MAX=(26x51x2048)-1=2715647asdefinedinGSM05.10.ForCOMPACT,FN_MAX=(52x51x1024)-1=2715647.TheframenumbershallbeincrementedattheendofeachTDMAframe.ThecompletecycleofTDMAframenumbersfrom0toFN_MAXisdefinedasahyperframe.Ahyperframeconsistsof2048superframeswhereasuperframeisdefinedas26x51TDMAframes.ForCOMPACT,ahyperframeconsistsof1024superframeswhereasuperframeisdefinedas52x51TDMAframes.A26-multiframe,comprising26TDMAframes,isusedtosupporttrafficandassociatedcontrolchannelsanda51-multiframe,comprising51TDMAframes,isusedtosupportbroadcast,commoncontrolandstandalonededicatedcontrol(andtheirassociatedcontrol)channels.Henceasuperframemaybeconsideredas51traffic/associatedcontrolmultiframesor26broadcast/commoncontrolmultiframes.A52-multiframe,comprisingtwo26-multiframes,isusedtosupportpacketdatatrafficandcontrolchannels.TheneedforahyperframeofasubstantiallylongerperiodthanasuperframearisesfromtherequirementsoftheencryptionprocesswhichusesFNasaninputparameter.4.3.4TimegroupUsedforCOMPACT,timegroupsshallbenumberedfrom0to3andaparticulartimegroupshallbereferredtobyitstimegroupnumb
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