1、 ETSI TS 129 202 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); Signalling System No. 7 (SS7) signalling transport in core network; Stage 3 (3GPP TS 29.202 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 129 202 V15.0.0 (2018-07)13GPP TS 29.202 version 15.0.0 Re
2、lease 15Reference RTS/TSGC-0429202vf00 Keywords UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important n
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9、29.202 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can
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13、f those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refe
14、r to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/ke
15、y/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“
16、 and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 129 202 V15.0.0 (2018-07)33GPP TS 29.202 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g32.1 Norm
17、ative references . 5g32.2 Informative references 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 6g34 Introduction 6g35 Protocol architectures . 7g35.1 Protocol architecture in the case of MTP-based SS7 signalling transport network 7g35.2 Protocol architecture in the c
18、ase of IP-based SS7 signalling transport network 7g35.2.1 M3UA 7g35.2.2 MTP3-M2PA 7g35.3 Protocol architecture in the case of ATM-based SS7 signalling transport network . 8 g3Annex A (Normative): The use of M3UA in 3GPP networks . 9g3A.1 Scope 9g3A.2 Introduction 9g3A.3 Protocol conformance to RFC 4
19、666 . 10g3Annex B (Informative): The use of M2PA in 3GPP networks 19g3B.1 Scope 19g3B.2 Introduction 19g3B.3 Protocol conformance to RFC 4165 . 19g3Annex C (informative): Change history . 24g3History 25g3ETSI ETSI TS 129 202 V15.0.0 (2018-07)43GPP TS 29.202 version 15.0.0 Release 15Foreword This Tec
20、hnical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released
21、by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is in
22、cremented 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. ETSI ETSI TS 129 202 V15.0.0 (2018-07)53GPP TS 29.202 version 15.0.0 Release 151 Scope The present docu
23、ment defines the possible protocol architectures for transport of SS7 signalling protocols in Core Network. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by da
24、te of publication, edition number, version number, etc.) or non-specific. - 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 impl
25、icitly refers to the latest version of that document in the same Release as the present document. 2.1 Normative references 1 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. 7“. 3 I
26、TU-T Recommendation Q.702: “Signalling data link“. 4 ITU-T Recommendation Q.703: “Signalling link“. 5 ITU-T Recommendation Q.704: “Signalling network functions and messages“. 6 ITU-T Recommendation Q.705: “Signalling network structure“. 7 ITU-T Recommendation Q.706: “Message transfer part signalling
27、 performance“. 8 RFC 2960: “Stream Control Transmission Protocol“. 9 ITU-T Recommendation G.804: “ATM cell mapping into Plesiochronous Digital Hierarchy (PDH)“. 10 ITU-T Recommendation I.112: “Vocabulary of terms for ISDNs“. 11 ITU-T Recommendation I.361: “B-ISDN ATM layer specification“. 12 ITU-T R
28、ecommendation I.363.5: “B-ISDN ATM Adaptation Layer specification: Type 5 AAL“. 13 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
29、 for signalling at the network node interface (SSCF at NNI)“. 15 ITU-T Recommendation Q.2210: “Message transfer part level 3 functions and messages using the services of ITU-T Recommendation Q.2140“. 17 RFC 3309: “SCTP Checksum Change“. 18 RFC 4666:Signaling System 7 (SS7) Message Transfer Part 3 (M
30、TP3) - User Adaptation Layer (M3UA)“. 19 RFC 4165: Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) -User Peer-to-Peer Adaptation Layer (M2PA)“. ETSI ETSI TS 129 202 V15.0.0 (2018-07)63GPP TS 29.202 version 15.0.0 Release 152.2 Informative references 16 RFC 2719: “Framework Architecture for S
31、ignalling Transport“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TR 21.905 1 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 1
32、. (no further terms defined) 3.2 Abbreviations For the purposes of the present document, the abbreviations given in TR 21.905 1 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 1. AAL5 ATM Ada
33、ptation Layer type 5 ATM Asynchronous Transfer Mode IP Internet Protocol MTP Message Transfer Part MTP1 Message Transfer Part layer 1 MTP2 Message Transfer Part layer 2 MTP3 Message Transfer Part layer 3 M2PA Message Transfer Part 2 -User Peer-to-Peer Adaptation Layer M3UA MTP3-User Adaptation PDH P
34、lesiochronous Digital Hierarchy SSCF Service Specific Coordination Function SSCOP Service Specific Connection Oriented Protocol SCCP Signalling Connection Control Part SCTP Stream Control Transmission Protocol SDH Synchronous Digital Hierarchy TCAP Transaction Capabilities Application Part 4 Introdu
35、ction The 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 protocol messages of any protocol layer that is identified by the MTP level 3 layer, in SS7
36、 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, Signalling Connection Control Part (SCCP). The transport of protocols which can be identified
37、 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 are transferred as SCCP payload. ETSI ETSI TS 129 202 V15.0.0 (2018-07)73GPP TS 29.202 vers
38、ion 15.0.0 Release 155 Protocol architectures 5.1 Protocol architecture in the case of MTP-based SS7 signalling transport network The 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 architecture
39、applicable in the case of MTP-based SS7 signalling transport network is shown in Figure 5.1/1 MTP3-User MTP3 MTP2 MTP1 Figure 5.1/1: Protocol architecture in the case of MTP-based SS7 signalling transport network 5.2 Protocol architecture in the case of IP-based SS7 signalling transport network 5.2.
40、1 M3UA The transport of an MTP3-user signalling messages shall be accomplished in accordance with the architecture defined by the “Framework Architecture for Signalling Transport“ 16, by “Stream Control Transmission Protocol“8 and by the IETF document available in Annex A. An implementation of SCTP
41、to this document shall use the checksum method specified in RFC 3309 17 instead of the 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 5.2/1 MTP3-User M3UA SCTP IP Figure 5.2/1: M3UA architecture in
42、 the case of IP-based SS7 signalling transport network The definition of the use of M3UA in 3GPP core network is provided in Annex A to this specification. 5.2.2 MTP3-M2PA An MTP3 signalling message can also be transported by M2PA, which shall be accomplished in accordance with IETF RFC 416519. The
43、M2PA protocol architecture applicable in the case of IP-based SS7 signalling transport network is shown in Figure 5.2/2 MTP3 M2PA SCTP IP Figure 5.2/2: M2PA architecture in the case of IP-based SS7 signalling transport network The definition of the use of M2PA in 3GPP core network is provided in Ann
44、ex B to this specification. ETSI ETSI TS 129 202 V15.0.0 (2018-07)83GPP TS 29.202 version 15.0.0 Release 155.3 Protocol architecture in the case of ATM-based SS7 signalling transport network The transport of an MTP3-user signalling messages shall be accomplished in accordance with the relevant ITU-T
45、 Recommendations 9, 10, 11, 12, 13, 14, 15 The protocol architectures applicable in the case of ATM-based SS7 signalling transport network are shown in Figure 5.3/1. ATM over SDH MTP3-User MTP3 B SSCF SSCOP AAL5 ATM ATM over PDH MTP3-User MTP3 B SSCF SSCOP AAL5 G.804 Figure 5.3/1: Protocol architect
46、ures in the case of ATM-based SS7 signalling transport network ETSI ETSI TS 129 202 V15.0.0 (2018-07)93GPP TS 29.202 version 15.0.0 Release 15Annex A (Normative): The use of M3UA in 3GPP networks A.1 Scope This annex defines the application of M3UA in 3GPP core networks. The purpose of the Annex is
47、to ensure the interoperability of different implementations of M3UAs used by different operators and vendors. This is achieved by: - Clarifying certain concepts which are used in RFC 4666; - Defining those features in RFC 4666 for which support is mandatory; - Defining those features in the RFC 4666
48、 for which support is optional; - Defining those features in RFC 4666 which shall not be used; The specification is intended for interfaces between network domains, however, it can also be used inside one network domain, and constitutes a minimum set of M3UA requirements to be supported between IP n
49、odes and between IP nodes and SGW nodes in a 3GPP network. A.2 Introduction M3UA may be used on a number of interfaces in a 3GPP core network. The annex is intended for the interface called A and C in figure 1. A is the Interface between two IP nodes that are equipped with SCTP, M3UA and a M3UA user. Examples of M3UA user are BICC, H.248, SCCP and ISUP. The interface can be used inside one network domain but also to interconnect network domains. Interface B can be used between network domains and
