SS7 signalling transport in core network3GPP 29202a10Word下载.docx

SS7 signalling transport in core network3GPP 29202a10Word下载.docx

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Contents

Foreword4

1Scope4

2References4

2.1Normativereferences4

2.2Informativereferences5

3Definitionsandabbreviations5

3.1Definitions5

3.2Abbreviations5

4Introduction6

5Protocolarchitectures6

5.1ProtocolarchitectureinthecaseofMTP-basedSS7signallingtransportnetwork6

5.2ProtocolarchitectureinthecaseofIP-basedSS7signallingtransportnetwork6

5.2.1M3UA6

5.2.2MTP3-M2PA7

5.3ProtocolarchitectureinthecaseofATM-basedSS7signallingtransportnetwork7

AnnexA（Normative）:

TheuseofM3UAin3GPPnetworks8

A.1Scope8

A.2Introduction8

A.3ProtocolconformancetoRFC46669

AnnexB（Informative）:

TheuseofM2PAin3GPPnetworks17

B.1Scope17

B.2Introduction17

B.3ProtocolconformancetoRFC416517

AnnexC（informative）:

Changehistory21

Foreword

ThisTechnicalSpecificationhasbeenproducedbythe3rdGenerationPartnershipProject（3GPP）.

ThecontentsofthepresentdocumentaresubjecttocontinuingworkwithintheTSGandmaychangefollowingformalTSGapproval.ShouldtheTSGmodifythecontentsofthepresentdocument,itwillbere-releasedbytheTSGwithanidentifyingchangeofreleasedateandanincreaseinversionnumberasfollows:

Versionx.y.z

where:

xthefirstdigit:

1presentedtoTSGforinformation;

2presentedtoTSGforapproval;

3orgreaterindicatesTSGapproveddocumentunderchangecontrol.

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

zthethirddigitisincrementedwheneditorialonlychangeshavebeenincorporatedinthedocument.

1Scope

ThepresentdocumentdefinesthepossibleprotocolarchitecturesfortransportofSS7signallingprotocolsinCoreNetwork.

2References

Thefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.

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

∙Foraspecificreference,subsequentrevisionsdonotapply.

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

2.1Normativereferences

[1]3GPPTR21.905:

"

Vocabularyfor3GPPSpecifications"

.

[2]ITU-TRecommendationQ.701:

Functionaldescriptionofthemessagetransferpart（MTP）ofsignallingsystemNo.7"

[3]ITU-TRecommendationQ.702:

Signallingdatalink"

[4]ITU-TRecommendationQ.703:

Signallinglink"

[5]ITU-TRecommendationQ.704:

Signallingnetworkfunctionsandmessages"

[6]ITU-TRecommendationQ.705:

Signallingnetworkstructure"

[7]ITU-TRecommendationQ.706:

Messagetransferpartsignallingperformance"

[8]RFC2960:

StreamControlTransmissionProtocol"

[9]ITU-TRecommendationG.804:

ATMcellmappingintoPlesiochronousDigitalHierarchy（PDH）"

[10]ITU-TRecommendationI.112:

VocabularyoftermsforISDNs"

[11]ITU-TRecommendationI.361:

B-ISDNATMlayerspecification"

[12]ITU-TRecommendationI.363.5:

B-ISDNATMAdaptationLayerspecification:

Type5AAL"

[13]ITU-TRecommendationQ.2110:

B-ISDNATMadaptationlayer-Servicespecificconnectionorientedprotocol（SSCOP）"

[14]ITU-TRecommendationQ.2140:

B-ISDNATMadaptationlayer-Servicespecificcoordinationfunctionforsignallingatthenetworknodeinterface（SSCFatNNI）"

[15]ITU-TRecommendationQ.2210:

Messagetransferpartlevel3functionsandmessagesusingtheservicesofITU-TRecommendationQ.2140"

[17]RFC3309:

SCTPChecksumChange"

[18]RFC4666:

SignalingSystem7（SS7）MessageTransferPart3（MTP3）-UserAdaptationLayer（M3UA）"

[19]RFC4165:

SignalingSystem7（SS7）MessageTransferPart2（MTP2）-UserPeer-to-PeerAdaptationLayer（M2PA）"

2.2Informativereferences

[16]RFC2719:

FrameworkArchitectureforSignallingTransport"

3Definitionsandabbreviations

3.1Definitions

Forthepurposesofthepresentdocument,thetermsanddefinitionsgiveninTR 

21.905 

[1]andthefollowingapply.Atermdefinedinthepresentdocumenttakesprecedenceoverthedefinitionofthesameterm,ifany,inTR 

[1].

（nofurthertermsdefined）

3.2Abbreviations

Forthepurposesofthepresentdocument,theabbreviationsgiveninTR 

21.905[1]andthefollowingapply.Anabbreviationdefinedinthepresentdocumenttakesprecedenceoverthedefinitionofthesameabbreviation,ifany,inTR 

AAL5ATMAdaptationLayertype5

ATMAsynchronousTransferMode

IPInternetProtocol

MTPMessageTransferPart

MTP1MessageTransferPartlayer1

MTP2MessageTransferPartlayer2

MTP3MessageTransferPartlayer3

M2PAMessageTransferPart2-UserPeer-to-PeerAdaptationLayer

M3UAMTP3-UserAdaptation

PDHPlesiochronousDigitalHierarchy

SSCFServiceSpecificCoordinationFunction

SSCOPServiceSpecificConnectionOrientedProtocol

SCCPSignallingConnectionControlPart

SCTPStreamControlTransmissionProtocol

SDHSynchronousDigitalHierarchy

TCAPTransactionCapabilitiesApplicationPart

4Introduction

TheCoreNetworkenablesthetransportofSS7signallingprotocolsbetweentwoentitiesbymeansofdifferentunderlyingnetworks（e.g.MTP-based,IP-basedorATM-based）.

ThetransportofSS7signallingprotocolmessagesofanyprotocollayerthatisidentifiedbytheMTPlevel3layer,inSS7terms,asauserpart（MTP3-user）shallbeaccomplishedinaccordancewiththeprotocolarchitecturedefinedinthefollowingsub-clauses.Thelistoftheseprotocollayersincludes,butisnotlimitedto,SignallingConnectionControlPart（SCCP）.

ThetransportofprotocolswhichcanbeidentifiedasSCCP-users,likeforexampleTCAP,andinturnthetransportofTCAP-userslikeMAPandCAP,shallalsobeaccomplishedinaccordancewiththedefinedprotocolarchitectures,sincetheirprotocolmessagesaretransferredasSCCPpayload.

5Protocolarchitectures

5.1ProtocolarchitectureinthecaseofMTP-basedSS7signallingtransportnetwork

ThetransportofanMTP3-usersignallingmessagesshallbeaccomplishedinaccordancewiththerelevantITU-TRecommendations[2],[3],[4],[5],[6],[7].

TheprotocolarchitectureapplicableinthecaseofMTP-basedSS7signallingtransportnetworkisshowninFigure5.1/1

MTP3-User

MTP3

MTP2

MTP1

Figure5.1/1:

ProtocolarchitectureinthecaseofMTP-basedSS7signallingtransportnetwork

5.2ProtocolarchitectureinthecaseofIP-basedSS7signallingtransportnetwork

5.2.1M3UA

ThetransportofanMTP3-usersignallingmessagesshallbeaccomplishedinaccordancewiththearchitecturedefinedbythe"

[16],by"

[8]andbytheIETFdocumentavailableinAnnexA.AnimplementationofSCTPtothisdocumentshallusethechecksummethodspecifiedinRFC3309[17]insteadofthemethodspecifiedinRFC2960[8].

TheM3UAprotocolarchitectureapplicableinthecaseofIP-basedSS7signallingtransportnetworkisshowninFigure5.2/1

M3UA

SCTP

IP

Figure5.2/1:

M3UAarchitectureinthecaseofIP-basedSS7signallingtransportnetwork

ThedefinitionoftheuseofM3UAin3GPPcorenetworkisprovidedinAnnexAtothisspecification.

5.2.2MTP3-M2PA

AnMTP3signallingmessagecanalsobetransportedbyM2PA,whichshallbeaccomplishedinaccordancewithIETFRFC4165[19].

TheM2PAprotocolarchitectureapplicableinthecaseofIP-basedSS7signallingtransportnetworkisshowninFigure5.2/2

M2PA

Figure5.2/2:

M2PAarchitectureinthecaseofIP-basedSS7signallingtransportnetwork

ThedefinitionoftheuseofM2PAin3GPPcorenetworkisprovidedinAnnexBtothisspecification.

5.3ProtocolarchitectureinthecaseofATM-basedSS7signallingtransportnetwork

ThetransportofanMTP3-usersignallingmessagesshallbeaccomplishedinaccordancewiththerelevantITU-T