1、 ETSI TS 125 432 V14.0.0 (2017-04) Universal Mobile Telecommunications System (UMTS); UTRAN Iub interface: signalling transport (3GPP TS 25.432 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 125 432 V14.0.0 (2017-04)13GPP TS 25.432 version 14.0.0 Release 14Reference RTS/TSGR-0325432
2、ve00 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
3、downloaded 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 ex
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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 Membe
8、rs. 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 125 432 V14.0.0 (2017-04)23GPP TS 25.432 version 14.0.0 Release 14Intellectual
9、Property 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 c
11、arried 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 G
12、eneration 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, 3
13、GPP 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 Dra
14、fting 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 125 432 V14.0.0 (2017-04)33GPP TS 25.432 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal ver
15、bs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations . 6g33.1 Definitions 6g33.2 Symbols 6g33.3 Abbreviations . 6g34 Data Link Layer . 6g34.1 ATM Transport Option 6g34.1.1 Protection switching at ATM Layer . 6g34.2 Data Link Layer for IP Transport Optio
16、n . 6g35 NBAP signalling bearer 7g35.1 Introduction 7g35.2 Signalling bearer in case of ATM Transport Option 7g35.3 Signalling bearer in case of IP Transport Option . 7g3Annex A (informative): Change history . 9g3History 10g3ETSI ETSI TS 125 432 V14.0.0 (2017-04)43GPP TS 25.432 version 14.0.0 Releas
17、e 14Foreword This Technical 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
18、 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.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 t
19、he 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. ETSI ETSI TS 125 432 V14.0.0 (2017-04)53GPP TS 25.432 version 14.0.0 Release 141 S
20、cope The present document specifies the signalling transport related to NBAP signalling to be used across the Iub Interface. The Iub interface is a logical interface for the interconnection of Node B and Radio Network Controller (RNC) components of the UMTS Terrestrial Radio Access Network (UTRAN) f
21、or the UMTS system. The radio network control signalling between these nodes is based on the Node B application part (NBAP). 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. uni25CF References are either spe
22、cific (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, the latest version applies. In the case of a reference to a 3GPP document (including a GSM docum
23、ent), 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 adaptation layer (SAAL) overview description“. 2 ITU-T Recommendation Q.2130 (1994-07): “B-ISDN signall
24、ing ATM adaptation layer Service specific coordination function for support of signalling at the user network interface (SSCFUNI)“. 3 ITU-T Recommendation Q.2110 (1994-07): “B-ISDN ATM adaptation layer Service specific connection oriented protocol (SSCOP)“. 4 ITU-T Recommendation I.363.5 (1996-08):
25、“B-ISDN ATM Adaptation LayerSpecification : Type 5 AAL“. 5 ITU-T Recommendation I.361 (1995-11): “B-ISDN ATM layer specification“. 6 ITU-T Recommendation I.630 (1999-02): “ATM protection switching“. 7 IETF RFC 2960 (2000-10): “Stream Control Transmission Protocol“. 8 IETF RFC 2460 (1998-12): “Intern
26、et Protocol, Version 6 (IPv6) Specification“. 9 IETF RFC 791 (1981-09): “Internet Protocol“. 10 IETF RFC 2474 (1998-12): “Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers“. 11 IETF RFC 1661 (1994-07): “The Point-to-Point Protocol (PPP)“. 12 IETF RFC 1662 (1994-
27、07): “PPP in HDLC-like Framing“. 13 IETF RFC 2507 (1999-02): “IP header compression“. 14 IETF RFC 1990 (1996-08): “The PPP Multilink Protocol (MP)“. 15 IETF RFC 2686 (1999-09): “The Multi-Class Extension to Multi-Link PPP“. 16 IETF RFC 2509 (1999-02): “IP Header Compression over PPP“. 17 IETF RFC 31
28、53 (2001-08): “PPP Multiplexing“. 18 IETF RFC 2364 (1998-07): “PPP over AAL5“. 19 IETF RFC 3031 (2001-01): “Multiprotocol Label Switching Architecture“. ETSI ETSI TS 125 432 V14.0.0 (2017-04)63GPP TS 25.432 version 14.0.0 Release 1420 IETF RFC 3309 (2002-09): “Stream Control Transmission Protocol (S
29、CTP) Checksum Change“. 21 3GPP TS 25.433: “UTRAN Iub interface Node B Application Part (NBAP) signalling“. 3 Definitions, symbols and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: IP UTRAN node: An UTRAN Node supporting the IP Tran
30、sport Option 3.2 Symbols (void) 3.3 Abbreviations AAL ATM Adaptation Layer ATM Asynchronous Transfer Mode HDLC High-level Data Link Control IP Internet Protocol NBAP Node B Application Part PPP Point-to-Point ProtocolRNC Radio Network Controller SAAL Signalling ATM Adaptation Layer SCTP Stream Contr
31、ol Transmission Protocol SSCF Service Specific Coordination Function SSCOP Service Specific Connection Oriented Protocol UNI User-Network Interface 4 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. 4.1.1 Protection switch
32、ing at ATM Layer If redundancy of pathways at ATM layer between RNC and Node B is supported, it shall be implemented using ATM Protection Switching according to ITU-T Rec. I.630 6. 4.2 Data Link Layer for IP Transport Option A RNC or Node B supporting IP Transport Option shall support the PPP protoc
33、ol with HDLC framing (IETF RFC 1661 11, IETF RFC 1662 12). NOTE: This does not preclude the single implementation and use of any other L2/L1 protocols (e.g. PPPMux/AAL5/ATM (IETF RFC 3153 17, IETF RFC 2364 18), PPP/AAL2/ATM, Ethernet, MPLS/ATM (IETF RFC 3031 19), etc.) fulfilling the UTRAN requireme
34、nts towards the upper layers. A RNC or Node B supporting IP transport option and having interfaces connected via slow bandwidth PPP links like E1/T1/J1 shall also support IP Header Compression (IETF RFC 2507 13) and the PPP extensions ML/MC-PPP (IETF ETSI ETSI TS 125 432 V14.0.0 (2017-04)73GPP TS 25
35、.432 version 14.0.0 Release 14RFC 1990 14, IETF RFC 2686 15). In this case, negotiation of header compression (IETF RFC 2507 13) over PPP shall be performed via (IETF RFC 2509 16). 5 NBAP signalling bearer 5.1 Introduction The Signalling Bearer for NBAP (TS 25.433 21) is a point-to-point protocol. T
36、here may be multiple point-to-point links between an RNC and a Node B. As shown in figure 1, the standard allows operators to choose one out of two protocol suites for transporting the NBAP messages. NodeB Application Part (NBAP) AAL Type 5 SSCF-UNI SSCOP NodeB Application Part (NBAP) Data Link Laye
37、r Physical Layer IP SCTP Physical Layer ATM Protocol Suite for ATM Transport Option Protocol Suite for IP Transport Option Figure 1: Iub NBAP Signalling Transport 5.2 Signalling bearer in case of ATM Transport Option The signalling bearer in the Radio Network Control Plane is SAAL-UNI (ITU-T Rec. Q.
38、2100 1) over ATM. The protocols to be used to support NBAP signalling are SSCF-UNI (ITU-T Rec. Q.2130 2) on top of SSCOP (ITU-T Rec. Q.2110 3) and AAL Type 5 (ITU-T Rec. I.363.5 4). 5.3 Signalling bearer in case of IP Transport Option SCTP (IETF RFC 2960 7) over IP shall be supported as the transpor
39、t for NBAP signalling bearer on Iub Interface. A RNC equipped with the SCTP stack option shall initiate the INIT procedure for establishing association. The data link layer is as specified in chapter 4.2. The checksum method specified in IETF RFC 3309 20 shall be used instead of the method specified
40、 in IETF RFC 2960 (7). An IP UTRAN node shall support IPv6 (IETF RFC 2460 8). The support of IPv4 (IETF RFC 791 9) is optional. NOTE: This does not preclude single implementation and use of IPv4. IP dual stack is recommended for the potential transition period from IPv4 to IPv6 in the transport netw
41、ork. Each signalling bearer between the RNC and Node B shall correspond to one single SCTP stream in UL and one single SCTP stream in DL direction, both streams belonging to the same SCTP association. ETSI ETSI TS 125 432 V14.0.0 (2017-04)83GPP TS 25.432 version 14.0.0 Release 14IP Differentiated Se
42、rvices code point marking (IETF RFC 2474 10) shall be supported. The Diffserv code point may be determined from the application parameters. ETSI ETSI TS 125 432 V14.0.0 (2017-04)93GPP TS 25.432 version 14.0.0 Release 14Annex A (informative): Change history Date / TSG TSG Doc. CR Rev Subject/Comment
43、New 12/2008 - - - Creation of Rel-8 version based on v7.1.0 8.0.0 12/2009 - - - Creation of Rel-9 version based on v8.0.0 9.0.0 SP-49 SP-100629 Clarification on the use of References (TS 21.801 CR#0030) 9.0.1 03/2011 Creation of Rel-10 version based on v9.0.1 10.0.0 52 RP-110685 0008 1 Correction to
44、 the References 10.1.0 09/2012 Update to Rel-11 version (MCC) 11.0.0 09/2014 Update to Rel-12 version (MCC) 12.0.0 12/2015 Update to Rel-13 version (MCC) 13.0.0 Change history Date Meeting TDoc CR Rev Cat Subject/Comment New version 2017-03 SA#75 Promotion to Release 14 without technical change 14.0.0 ETSI ETSI TS 125 432 V14.0.0 (2017-04)103GPP TS 25.432 version 14.0.0 Release 14History Document history V14.0.0 April 2017 Publication
