1、 ETSI TS 125 422 V14.0.0 (2017-04) Universal Mobile Telecommunications System (UMTS); UTRAN Iur interface signalling transport (3GPP TS 25.422 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 125 422 V14.0.0 (2017-04)13GPP TS 25.422 version 14.0.0 Release 14Reference RTS/TSGR-0325422v
2、e00 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 notice The present document can be d
3、ownloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any exi
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6、/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without
7、the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Member
8、s. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 125 422 V14.0.0 (2017-04)23GPP TS 25.422 version 14.0.0 Release 14Intellectual P
9、roperty Rights IPRs essential or potentially essential to the present document 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 be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs)
10、; Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been ca
11、rried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Ge
12、neration Partnership Project (3GPP). The present document may refer 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, 3G
13、PP and ETSI identities can be found under http:/webapp.etsi.org/key/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 Draf
14、ting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 125 422 V14.0.0 (2017-04)33GPP TS 25.422 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verb
15、s terminology 2g31 Scope 5g32 References 5g33 Abbreviations . 6g34 Data Link Layer . 7g34.1 ATM Transport Option 7g34.2 IP Transport Option 7g35 RNSAP Signalling Bearer 7g35.1 Introduction 7g35.2 Signalling Bearer 8g35.2.1 ATM Option 1 8g35.2.2 ATM Option 2 8g35.2.3 IP Transport Option 9g35.3 Servic
16、es Provided by the Signalling Bearer . 9g3Annex A (informative): Change history . 10g3History 11g3ETSI ETSI TS 125 422 V14.0.0 (2017-04)43GPP TS 25.422 version 14.0.0 Release 14Foreword This Technical Specification (TS) has been produced by the 3rdGeneration Partnership Project (3GPP). The contents
17、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 by the TSG with an identifying change of release date and an increase in version number as follows: V
18、ersion 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 incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the
19、 third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 125 422 V14.0.0 (2017-04)53GPP TS 25.422 version 14.0.0 Release 141 Scope The present document specifies the standards for Signalling Transport to be used across Iur Interface. Iur Interface
20、is a logical interface between the two RNC of the UMTS Terrestrial Radio Access Network (UTRAN) for the UMTS system. The present document describes how the RNSAP signalling messages are transported between the two RNCs. 2 References The following documents contain provisions which, through reference
21、 in this text, constitute provisions of the present document. uni25CF References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. uni25CF For a specific reference, subsequent revisions do not apply. uni25CF For a non-specific reference, t
22、he latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 ITU-T Recommendation Q.2100 (1994-07): “B-ISDN Signalling ATM Adaptati
23、on Layer (SAAL) - Overview description“. 2 ITU-T Recommendation Q.2110 (1994-07): “B-ISDN ATM adaptation layer - Service Specific Connection Oriented Protocol (SSCOP)“. 3 ITU-T Recommendation Q.2140 (1995-02): “B-ISDN ATM adaptation layer - Service Specific Co-ordination Function for signalling at t
24、he Network Node Interface (SSCF AT NNI)“. 4 ITU-T Recommendation Q.2210 (1996-07): “Message transfer part level 3 functions and messages using the services of ITU-T Recommendation Q.2140“. 5 ITU-T Recommendation I.361 (1995-11): “B-ISDN ATM layer specification“. 6 ITU-T Recommendation I.363.5 (1996-
25、08): “B-ISDN ATM Adaptation Layer specification: Type 5 AAL“. 7 ITU-T Recommendation Q.711 (1996-07): “Functional description of the signalling connection control part“. 8 ITU-T Recommendation Q.712 (1996-07): “Definition and function of Signalling connection control part messages“. 9 ITU-T Recommen
26、dation Q.713 (1996-07): Signalling connection control part formats and codes. 10 ITU-T Recommendation Q.714 (1996-07): “Signalling connection control part procedures“. 11 ITU-T Recommendation Q.715 (1996-07): “Signalling connection control part user guide“. 12 ITU-T Recommendation Q.716 (1993-03): “
27、Signalling System No. 7 - Signalling Connection Control Part (SCCP) performance“. 13 IETF RFC 791 (September 1981): “Internet Protocol“. 14 IETF RFC 1483 (July 1993): “Multi protocol Encapsulation over ATM Adaptation Layer 5“. 15 IETF RFC 2225 (April 1998): “Classical IP and ARP over ATM“. 16 IETF R
28、FC 2960 (October 2000): “Stream Control Transmission Protocol“. 17 IETF RFC 3332(2002-09): “Signalling System 7 (SS7) Message Transfer Part 3 (MTP3) User Adaptation Layer (M3UA)“ ETSI ETSI TS 125 422 V14.0.0 (2017-04)63GPP TS 25.422 version 14.0.0 Release 1418 IETF STD 51, RFC 1661 (1994-07): “The P
29、oint-To-Point Protocol (PPP)“. 19 IETF STD 51, RFC 1662 (1994-07): “PPP in HDLC-like Framing“. 20 IETF RFC 2507 (1999-02): “IP header compression“. 21 IETF RFC 1990 (1996-08): “The PPP Multilink Protocol (MP)“. 22 IETF RFC 2686 (1999-09): “The Multi-Class Extension to Multi-Link PPP“. 23 IETF RFC 25
30、09 (1999-02): “IP Header Compression over PPP“. 24 IETF RFC 2460 (1998-12): “Internet Protocol, Version 6 (Ipv6) Specification“. 25 IETF RFC 2474 (1998-12): “Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers“. 26 Void 27 IETF RFC 3153 (2001-08): “PPP Multiplexin
31、g“. 28 IETF RFC 2364 (1998-07): “PPP over AAL5“. 29 IETF RFC 3031 (2001-01): “Multiprotocol Label Switching Architecture“. 30 IETF RFC 3309 (2002-09): “SCTP Checksum Change“. 31 ANSI T1.111-2001: “Signalling System Number 7 (SS7) - Message Transfer Part (MTP)“. 32 ANSI T1.112-2001: “Signaling System
32、 Number 7 (SS7) - Signaling Connection Control Part (SCCP)“. 33 ANSI T1.645-1995 (R2003): “B-ISDN Signaling ATM Adaptation Layer - Service Specific Coordination Function for Support of Signaling at the Network Node Interface (SSCF at the NNI)“. 3 Abbreviations For the purposes of the present documen
33、t, the following abbreviations apply: AAL ATM Adaptation Layer AAL2 ATM Adaptation Layer 2 AAL5 ATM Adaptation Layer 5 ATM Asynchronous Transfer Mode DiffServ Differentiated Services HDLC High level Data Link Control IP Internet Protocol IPv4 Internet Protocol, version 4 IPv6 Internet Protocol, vers
34、ion 6 M3UA SS7 MTP3 User Adaptation layer ML/MC-PPP Muti-Link/Multi-Class PPP MPLS Multiprotocol Label Switching MTP3-B Message Transfer Part level 3 for Q.2140 PLMN Public Land Mobile Network PPP Point-to-Point protocol PPPMux PPP Multiplexing QoS Quality of Service RNC Radio Network Controller RNS
35、AP Radio Network Subsystem Application Part SAAL-NNI Signalling ATM Adaptation Layer - Network Node Interface SCCP Signalling Connection Control Part SCTP Stream Control Transmission Protocol SSCF Service Specific Co-ordination Function SSCOP Service Specific Connection Oriented Protocol UE User Equ
36、ipment ETSI ETSI TS 125 422 V14.0.0 (2017-04)73GPP TS 25.422 version 14.0.0 Release 144 Data Link Layer 4.1 ATM Transport Option ATM shall be used in the radio network control plane according to ITU-T Rec. I.361 5. The structure of the cell header used in the UTRAN Iur interface is the cell header f
37、ormat and encoding at NNI (see figure 3 of ITU-T Rec. I.361 5). 4.2 IP Transport Option A UTRAN Node supporting IP transport option shall support PPP protocol with HDLC framing IETF RFC 1661 18, IETF RFC 1662 19. Note: This does not preclude the single implementation and use of any other data link l
38、ayer protocols (e.g. PPPMux/AAL5/ATM (IETF RFC 3153 27, IETF RFC 2364 28), PPP/AAL2/ATM, Ethernet, MPLS/ATM (IETF RFC 3031 29), etc.) fulfilling the UTRAN requirements toward the upper layers. An RNC using IP transport option having interfaces connected via slow bandwidth PPP links like E1/T1/J1 sha
39、ll also support IP Header Compression IETF RFC 2507 20 and the PPP extensions ML/MC-PPP IETF RFC 1990 21, IETF RFC 2686 22. In this case, negotiation of header compression IETF RFC 2507 20 over PPP shall be performed via IETF RFC 2509 23. 5 RNSAP Signalling Bearer 5.1 Introduction This subclause spe
40、cifies the Signalling Bearer protocol stack that supports the RNSAP signalling protocol. The following requirements on the RNSAP signalling bearer can be stated: provide reliable transfer of control plane signalling messages in both connectionless mode and connection-oriented mode; provide separate
41、independent connections for distinguishing transactions with individual UEs; supervise the “UE connections“ and provide connection status information to the Upper Layers for individual UEs; provide networking and routing functions; provide redundancy in the signalling network; provide load sharing.
42、ETSI ETSI TS 125 422 V14.0.0 (2017-04)83GPP TS 25.422 version 14.0.0 Release 145.2 Signalling Bearer This subclause refers to specifications of the Signalling Bearer for the Radio Network Layer protocols. As shown in figure 1, the standard allows operators to choose one out of three protocol suites
43、for transport of SCCP messages. SCCP-SAP SCCP-SAP RNSAP MTP3-B SCTP SCCP SSCF-NNI IP SSCOP AAL5 ATM M3UA SCTP RNSAP SCCP M3UA SCTP IP Data Link PHY ATM Transport Option 1 ATM Transport Option 2 IP Transport Option Figure 1: Signalling bearer for RNSAP 5.2.1 ATM Option 1 1. SCCP ITU-T Rec. Q.711 7 /I
44、TU-T Rec. Q.712 8/ ITU-T Rec. Q.713 9/ ITU-T Rec. Q.714 10/ ITU-T Rec. Q.715 11/ ITU-T Rec. Q.71612 or ANSI T1.112-2001 32 provides connectionless service, class 0, connection oriented service, class 2, separation of the connections mobile by mobile basis on the connection oriented link and establis
45、hment of a connection oriented link mobile by mobile basis. 2. MTP3-B ITU-T Rec. Q.2210 4 or ANSI T1.111-2001 31 provides message routing, discrimination and distribution (for point-to-point link only), signalling link management load sharing and changeover/back between link within one link-set. The
46、 need for multiple link-sets is precluded. 3. SAAL-NNI ITU-T Rec. Q.2100 1 consists of the following sub-layers: - SSCF ITU-T Rec. Q.2140 3 or ANSI T1.645-1995 33, - SSCOP ITU-T Rec. Q.2110 2 and - AAL5 ITU-T Rec. I.363.5 6. The SSCF maps the requirements of the layer above to the requirements of SS
47、COP. Also SAAL connection management, link status and remote processor status mechanisms are provided. SSCOP provides mechanisms for the establishment and release of connections and the reliable exchange of signalling information between signalling entities. Adapts the upper layer protocol to the re
48、quirements of the Lower ATM cells. 4. ATM ITU-T Rec. I.361 5. 5.2.2 ATM Option 2 1. SCCP. See subclause 5.2.1 2. M3UA refers to the SCCP adaptation layer “SS7 MTP3 - User Adaptation Layer“IETF RFC 3332 17 also developed by the Sigtran working group of the IETF. An RNC equipped with the M3UA stack op
49、tion shall ETSI ETSI TS 125 422 V14.0.0 (2017-04)93GPP TS 25.422 version 14.0.0 Release 14support both the client and the server functionality towards another RNC. This enables the RNC to report to another RNC when it is a newly introduced entity in the network. 3. SCTP refers to the Stream Control Transmission Protocol IETF RFC 2960 16 developed by the Sigtran working group of the IETF for the purposes of transporting various si
