LTEMAC协议最新版本Word下载.docx

LTEMAC协议最新版本Word下载.docx

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Contents

Foreword5

1Scope6

2References6

3Definitionsandabbreviations6

3.1Definitions6

3.2Abbreviations8

4General8

4.1Introduction8

4.2MACarchitecture9

4.2.1MACEntities9

4.3Services10

4.3.1Servicesprovidedtoupperlayers10

4.3.2Servicesexpectedfromphysicallayer10

4.4Functions10

4.5Channelstructure11

4.5.1TransportChannels11

4.5.2LogicalChannels11

4.5.3MappingofTransportChannelstoLogicalChannels11

4.5.3.1Uplinkmapping12

4.5.3.2Downlinkmapping12

5MACprocedures13

5.1RandomAccessprocedure13

5.1.1RandomAccessProcedureinitialization13

5.1.2RandomAccessResourceselection14

5.1.3RandomAccessPreambletransmission15

5.1.4RandomAccessResponsereception15

5.1.5ContentionResolution16

5.1.6CompletionoftheRandomAccessprocedure17

5.2MaintenanceofUplinkTimeAlignment17

5.3DL-SCHdatatransfer18

5.3.1DLAssignmentreception18

5.3.2HARQoperation20

5.3.2.1HARQEntity20

5.3.2.2HARQprocess20

5.3.3Disassemblyanddemultiplexing21

5.4UL-SCHdatatransfer22

5.4.1ULGrantreception22

5.4.2HARQoperation23

5.4.2.1HARQentity23

5.4.2.2HARQprocess24

5.4.3Multiplexingandassembly25

5.4.3.1Logicalchannelprioritization25

5.4.3.2MultiplexingofMACControlElementsandMACSDUs26

5.4.4SchedulingRequest26

5.4.5BufferStatusReporting27

5.4.6PowerHeadroomReporting28

5.5PCHreception29

5.6BCHreception30

5.7DiscontinuousReception（DRX）30

5.8MACreconfiguration31

5.9MACReset32

5.10Semi-PersistentScheduling32

5.10.1Downlink33

5.10.2Uplink33

5.11Handlingofunknown,unforeseenanderroneousprotocoldata33

5.12MCHreception33

5.13Activation/DeactivationofSCells34

6ProtocolDataUnits,formatsandparameters35

6.1ProtocolDataUnits35

6.1.1General35

6.1.2MACPDU（DL-SCHandUL-SCHexcepttransparentMACandRandomAccessResponse,MCH）35

6.1.3MACControlElements36

6.1.3.1BufferStatusReportMACControlElements36

6.1.3.2C-RNTIMACControlElement39

6.1.3.3DRXCommandMACControlElement39

6.1.3.4UEContentionResolutionIdentityMACControlElement40

6.1.3.5TimingAdvanceCommandMACControlElement40

6.1.3.6PowerHeadroomReportMACControlElement40

6.1.3.6aExtendedPowerHeadroomReportMACControlElement41

6.1.3.7MCHSchedulingInformationMACControlElement42

6.1.3.8Activation/DeactivationMACControlElement43

6.1.3.9LongDRXCommandMACControlElement43

6.1.4MACPDU（transparentMAC）43

6.1.5MACPDU（RandomAccessResponse）43

6.2Formatsandparameters44

6.2.1MACheaderforDL-SCH,UL-SCHandMCH44

6.2.2MACheaderforRandomAccessResponse46

6.2.3MACpayloadforRandomAccessResponse46

7Variablesandconstants46

7.1RNTIvalues46

7.2BackoffParametervalues47

7.3PRACHMaskIndexvalues48

7.4Subframe_Offsetvalues48

7.5TTI_BUNDLE_SIZEvalue48

7.6DELTA_PREAMBLEvalues48

7.7HARQRTTTimer49

AnnexA（normative）:

Handlingofmeasurementgaps50

AnnexB（normative）:

ContentionresolutionforRACHaccess51

AnnexC（informative）:

IntendedUEbehaviourforDRXTimers52

AnnexD（informative）:

Changehistory53

Foreword

ThisTechnicalSpecificationhasbeenproducedbythe3rdGenerationPartnershipProject（3GPP）.

ThecontentsofthepresentdocumentaresubjecttocontinuingworkwithintheTSGandmaychangefollowingformalTSGapproval.ShouldtheTSGmodifythecontentsofthepresentdocument,itwillbere-releasedbytheTSGwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:

Versionx.y.z

where:

xthefirstdigit:

1presentedtoTSGforinformation;

2presentedtoTSGforapproval;

3orgreaterindicatesTSGapproveddocumentunderchangecontrol.

ytheseconddigitisincrementedforallchangesofsubstance,i.e.technicalenhancements,corrections,updates,etc.

zthethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthedocument.

1Scope

ThepresentdocumentspecifiestheE-UTRAMACprotocol.

2References

Thefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.

∙Referencesareeitherspecific（identifiedbydateofpublication,editionnumber,versionnumber,etc.）ornonspecific.

∙Foraspecificreference,subsequentrevisionsdonotapply.

∙Foranon-specificreference,thelatestversionapplies.Inthecaseofareferencetoa3GPPdocument（includingaGSMdocument）,anon-specificreferenceimplicitlyreferstothelatestversionofthatdocumentinthesameReleaseasthepresentdocument.

[1]3GPPTR21.905:

"

Vocabularyfor3GPPSpecifications"

.

[2]3GPPTR36.213:

PhysicalLayerProcedures"

[3]3GPPTS36.322:

“EvolvedUniversalTerrestrialRadioAccess（E-UTRA）;

RadioLinkControl（RLC）protocolspecification”.

[4]3GPPTS36.323:

PacketDataConvergenceProtocol（PDCP）Specification”.

[5]3GPPTS36.212:

Multiplexingandchannelcoding”.

[6]3GPPTS36.214:

Physicallayer;

Measurements”.

[7]3GPPTS36.211:

PhysicalChannelsandModulation”.

[8]3GPPTS36.331:

RadioResourceControl（RRC）;

Protocolspecification”.

[9]3GPPTS36.133:

Requirementsforsupportofradioresourcemanagement"

[10]3GPPTS36.101:

UserEquipment（UE）radiotransmissionandreception"

[11]3GPPTS36.216:

Physicallayerforrelayingoperation"

3Definitionsandabbreviations

3.1Definitions

Forthepurposesofthepresentdocument,thetermsanddefinitionsgiveninTR 

21.905 

[1]andthefollowingapply.Atermdefinedinthepresentdocumenttakesprecedenceoverthedefinitionofthesameterm,ifany,inTR 

[1].

ActiveTime:

TimerelatedtoDRXoperation,asdefinedinsubclause5.7,duringwhichtheUEmonitorsthePDCCHinPDCCH-subframes.

mac-ContentionResolutionTimer:

Specifiesthenumberofconsecutivesubframe（s）duringwhichtheUEshallmonitorthePDCCHafterMsg3istransmitted.

DRXCycle:

SpecifiestheperiodicrepetitionoftheOnDurationfollowedbyapossibleperiodofinactivity（seefigure3.1-1below）.

Figure3.1-1:

DRXCycle

drx-InactivityTimer:

SpecifiesthenumberofconsecutivePDCCH-subframe（s）afterthesubframeinwhichaPDCCHindicatesaninitialULorDLuserdatatransmissionforthisUE.

drx-RetransmissionTimer:

SpecifiesthemaximumnumberofconsecutivePDCCH-subframe（s）untilaDLretransmissionisreceived.

drxShortCycleTimer:

Specifiesthenumberofconsecutivesubframe（s）theUEshallfollowtheShortDRXcycle.

drxStartOffset:

SpecifiesthesubframewheretheDRXCyclestarts.

HARQinformation:

HARQinformationconsistsofNewDataIndicator（NDI）,TransportBlock（TB）size.ForDL-SCHtransmissionstheHARQinformationalsoincludesHARQprocessID.ForUL-SCHtransmissiontheHARQinfoalsoincludesRedundancyVersion（RV）.IncaseofspatialmultiplexingonDL-SCHtheHARQinformationcomprisesasetofNDIandTBsizeforeachtransportblock.

HARQRTTTimer:

Thisparameterspecifiestheminimumamountofsubframe（s）beforeaDLHARQretransmissionisexpectedbytheUE.

Msg3:

MessagetransmittedonUL-SCHcontainingaC-RNTIMACCEorCCCHSDU,submittedfromupperlayerandassociatedwiththeUEContentionResolutionIdentity,aspartofarandomaccessprocedure.

onDurationTimer:

SpecifiesthenumberofconsecutivePDCCH-subframe（s）atthebeginningofaDRXCycle.

PDCCH:

ReferstothePDCCH[7],EPDCCH（insubframeswhenconfigured）or,foranRNwithR-PDCCHconfiguredandnotsuspended,totheR-PDCCH.

PDCCH-subframe:

ReferstoasubframewithPDCCH.ForFDDUEoperation,thisre