SS7 signalling transport in core network3GPP 29202a10Word下载.docx

1、Postal address3GPP support office address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16Internethttp:/www.3gpp.orgCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restri

2、ction extend to reproduction in all media. 2011, 3GPP Organizational Partners （ARIB, ATIS, CCSA, ETSI, TTA, TTC）.All rights reserved.UMTS is a Trade Mark of ETSI registered for the benefit of its members3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizati

3、onal PartnersLTE is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational PartnersGSM and the GSM logo are registered and owned by the GSM AssociationContentsForeword 41 Scope 42 References 42.1 Normative references 42.2 Informative references

4、53 Definitions and abbreviations 53.1 Definitions 53.2 Abbreviations 54 Introduction 65 Protocol architectures 65.1 Protocol architecture in the case of MTP-based SS7 signalling transport network 65.2 Protocol architecture in the case of IP-based SS7 signalling transport network 65.2.1 M3UA 65.2.2 M

5、TP3-M2PA 75.3 Protocol architecture in the case of ATM-based SS7 signalling transport network 7Annex A （Normative）: The use of M3UA in 3GPP networks 8A.1 Scope 8A.2 Introduction 8A.3 Protocol conformance to RFC 4666 9Annex B （Informative）: The use of M2PA in 3GPP networks 17B.1 Scope 17B.2 Introduct

6、ion 17B.3 Protocol conformance to RFC 4165 17Annex C （informative）: Change history 21ForewordThis Technical Specification has been produced by the 3rd Generation Partnership Project （3GPP）.The contents of the present document are subject to continuing work within the TSG and may change following for

7、mal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows:Version x.y.zwhere:x the first digit:1 presented to TSG for information;2 presented to TSG for appro

8、val;3 or greater indicates TSG approved document under change control.y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc.z the third digit is incremented when editorial only changes have been incorporated in the document.1 ScopeThe

9、present document defines the possible protocol architectures for transport of SS7 signalling protocols in Core Network.2 ReferencesThe following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific （identifi

10、ed by date of publication, edition number, version number, etc.） or nonspecific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document （including a GSM document）, a non-specific reference i

11、mplicitly refers to the latest version of that document in the same Release as the present document.2.1 Normative references1 3GPP TR 21.905: Vocabulary for 3GPP Specifications.2 ITU-T Recommendation Q.701:Functional description of the message transfer part （MTP） of signalling system No. 73 ITU-T Re

12、commendation Q.702:Signalling data link4 ITU-T Recommendation Q.703:Signalling link5 ITU-T Recommendation Q.704:Signalling network functions and messages6 ITU-T Recommendation Q.705:Signalling network structure7 ITU-T Recommendation Q.706:Message transfer part signalling performance8 RFC 2960:Stream

13、 Control Transmission Protocol9 ITU-T Recommendation G.804:ATM cell mapping into Plesiochronous Digital Hierarchy （PDH）10 ITU-T Recommendation I.112:Vocabulary of terms for ISDNs11 ITU-T Recommendation I.361:B-ISDN ATM layer specification12 ITU-T Recommendation I.363.5:B-ISDN ATM Adaptation Layer sp

14、ecification: Type 5 AAL13 ITU-T Recommendation Q.2110:B-ISDN ATM adaptation layer - Service specific connection oriented protocol （SSCOP）14 ITU-T Recommendation Q.2140:B-ISDN ATM adaptation layer - Service specific coordination function for signalling at the network node interface （SSCF at NNI）15 IT

15、U-T Recommendation Q.2210:Message transfer part level 3 functions and messages using the services of ITU-T Recommendation Q.214017 RFC 3309:SCTP Checksum Change18 RFC 4666:Signaling System 7 （SS7） Message Transfer Part 3 （MTP3） - User Adaptation Layer （M3UA）19 RFC 4165: Signaling System 7 （SS7） Mess

16、age Transfer Part 2 （MTP2） -User Peer-to-Peer Adaptation Layer （M2PA）2.2 Informative references16 RFC 2719:Framework Architecture for Signalling Transport3 Definitions and abbreviations3.1 DefinitionsFor the purposes of the present document, the terms and definitions given in TR21.9051 and the follo

17、wing apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR1. （no further terms defined）3.2 AbbreviationsFor the purposes of the present document, the abbreviations given in TR21.905 1 and the following apply. An abbreviation defined in the

18、 present document takes precedence over the definition of the same abbreviation, if any, in TRAAL5 ATM Adaptation Layer type 5ATM Asynchronous Transfer ModeIP Internet ProtocolMTP Message Transfer PartMTP1 Message Transfer Part layer 1MTP2 Message Transfer Part layer 2MTP3 Message Transfer Part laye

19、r 3 M2PA Message Transfer Part 2 -User Peer-to-Peer Adaptation LayerM3UA MTP3-User AdaptationPDH Plesiochronous Digital HierarchySSCF Service Specific Coordination FunctionSSCOP Service Specific Connection Oriented Protocol SCCP Signalling Connection Control PartSCTP Stream Control Transmission Prot

20、ocol SDH Synchronous Digital HierarchyTCAP Transaction Capabilities Application Part4 IntroductionThe Core Network enables the transport of SS7 signalling protocols between two entities by means of different underlying networks （e.g. MTP-based, IP-based or ATM-based）. The transport of SS7 signalling

21、 protocol messages of any protocol layer that is identified by the MTP level 3 layer, in SS7 terms, as a user part （MTP3-user） shall be accomplished in accordance with the protocol architecture defined in the following sub-clauses. The list of these protocol layers includes, but is not limited to, S

22、ignalling Connection Control Part （SCCP）.The transport of protocols which can be identified as SCCP-users, like for example TCAP, and in turn the transport of TCAP-users like MAP and CAP, shall also be accomplished in accordance with the defined protocol architectures, since their protocol messages

23、are transferred as SCCP payload.5 Protocol architectures 5.1 Protocol architecture in the case of MTP-based SS7 signalling transport networkThe transport of an MTP3-user signalling messages shall be accomplished in accordance with the relevant ITU-T Recommendations 2, 3, 4, 5, 6, 7.The protocol arch

24、itecture applicable in the case of MTP-based SS7 signalling transport network is shown in Figure 5.1/1MTP3-UserMTP3MTP2MTP1Figure 5.1/1: Protocol architecture in the case of MTP-based SS7 signalling transport network5.2 Protocol architecture in the case of IP-based SS7 signalling transport network5.

25、2.1 M3UAThe transport of an MTP3-user signalling messages shall be accomplished in accordance with the architecture defined by the 16, by 8 and by the IETF document available in Annex A. An implementation of SCTP to this document shall use the checksum method specified in RFC 3309 17 instead of the

26、method specified in RFC 2960 8.The M3UA protocol architecture applicable in the case of IP-based SS7 signalling transport network is shown in Figure 5.2/1M3UASCTPIPFigure 5.2/1: M3UA architecture in the case of IP-based SS7 signalling transport networkThe definition of the use of M3UA in 3GPP core n

27、etwork is provided in Annex A to this specification.5.2.2 MTP3-M2PAAn MTP3 signalling message can also be transported by M2PA, which shall be accomplished in accordance with IETF RFC 416519.The M2PA protocol architecture applicable in the case of IP-based SS7 signalling transport network is shown in

28、 Figure 5.2/2M2PAFigure 5.2/2: M2PA architecture in the case of IP-based SS7 signalling transport networkThe definition of the use of M2PA in 3GPP core network is provided in Annex B to this specification.5.3 Protocol architecture in the case of ATM-based SS7 signalling transport networkThe transport of an MTP3-user signalling messages shall be accomplished in accordance with the relevant ITU-T