1、 ETSI TS 125 410 V14.0.0 (2017-04) Universal Mobile Telecommunications System (UMTS); UTRAN Iu interface: General aspects and principles (3GPP TS 25.410 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 125 410 V14.0.0 (2017-04)13GPP TS 25.410 version 14.0.0 Release 14Reference RTS/TSG
2、R-0325410ve00 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 documen
3、t can be 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
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6、l.etsi.org/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 modifie
7、d without 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
8、its Members. 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 125 410 V14.0.0 (2017-04)23GPP TS 25.410 version 14.0.0 Release 14Inte
9、llectual 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 Rig
10、hts (IPRs); 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, h
11、as been carried 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 E
12、TSI 3rd Generation 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
13、, UMTS, 3GPP 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
14、 ETSI Drafting 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 125 410 V14.0.0 (2017-04)33GPP TS 25.410 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3
15、Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 7g33.3 Specification Notations 8g34 General Aspects 9g34.1 UTRAN Architecture . 9g34.1.1 Iu Interface Architecture . 9g34.1.2 Iuconnection principles 10g34.
16、1.3 Implementation of the NAS Node Selection Function 10g34.1.4 Implementation of MOCN configuration support . 10g34.2 IuInterface General Principles 10g34.3 IuInterface Specification Objectives 10g34.4 IuInterface Capabilities 11g34.5 IuInterface Characteristics . 11g34.5.1 Use of Transport Network
17、 User Plane as Signalling Bearer . 11g34.5.1.1 Use of SCCP . 11g34.5.1.1.1 General 11g34.5.1.1.2 SCCP Connection Establishment procedure 12g34.5.1.1.3 SCCP Connection Release procedure 14g34.5.1.1.4 General SCCP Abnormal Conditions 14g34.5.1.2 Use of MTP3b . 15g34.5.2 Use of Transport Network User P
18、lane as User Data Bearer . 15g34.5.2.1 Use of AAL2 . 15g34.5.2.2 Use of GTP-U . 15g34.5.2.3 Use of RTP 15g34.5.3 Use of Transport Network User Plane on Iu-BC 15g35 Functions of the IuInterface Protocols 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change contro
19、l. 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. ETSI ETSI TS 125 410 V14.0.0 (2017-04)63GPP TS 25.410 version 14.0.0 Release
20、 141 Scope The present document is an introduction to the 3GPP TS 25.41x series of Technical Specifications that define the Iu interface for the interconnection of Radio Network Controller (RNC) component of the UMTS Terrestrial Radio Access Network (UTRAN) to the Core Network of the UMTS system. 2
21、References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. - For a specific reference, subseque
22、nt 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 implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TS 25
23、.401: “UTRAN Overall Description“. 2 3GPP TR 23.930: “Iu Principles“. 3 3GPP TS 23.110: “UMTS Access Stratum Services and Functions“. 4 3GPP TS 25.411: “UTRAN Iu Interface Layer 1“. 5 3GPP TS 25.412: “UTRAN Iu Interface Signalling Transport“. 6 3GPP TS 25.413: “UTRAN Iu Interface RANAP Signalling“.
24、7 3GPP TS 25.414: “UTRAN Iu Interface Data Transport and Transport Signalling“ 8 3GPP TS 25.415: “UTRAN Iu Interface User Plane Protocols“. 9 ITU-T Recommendation Q.711 (1996-07): “Functional description of the signalling connection control part“. 10 ITU-T Recommendation Q.712 (1996-07): “Definition
25、 and function of signalling connection control part messages“. 11 ITU-T Recommendation Q.713 (1996-07): “Signalling connection control part formats and codes“. 12 ITU-T Recommendation Q.714 (1996-07): “Signalling connection control part procedures“. 13 3GPP TS 23.003: “Numbering, Addressing and Iden
26、tification“. 14 3GPP TS 25.419: “UTRAN Iu Interface: Service Area Broadcast Protocol SABP“. 15 3GPP TS 23.153: “Out of Band Transcoder Control; Stage 2“. 16 ITU-T Recommendation Q.2630.1: “AAL type 2 signalling protocol - (Capability Set 1)“. 17 ITU-T Recommendation Q.2630.2: “AAL type 2 signalling
27、protocol - Capability Set 2“. 18 IETF RFC 3332 (2002-09): “Signalling System 7 (SS7) Message Transfer Part 3 (MTP3) User Adaptation Layer (M3UA)“ 19 IETF RFC 1889 (1996-01): “RTP: A Transport Protocol for Real Time Applications“. 20 IETF RFC 768 (1980-08): “User Datagram Protocol“. 21 IETF RFC 793 (
28、1981-09): “TCP, Transmission Control Protocol“. ETSI ETSI TS 125 410 V14.0.0 (2017-04)73GPP TS 25.410 version 14.0.0 Release 1422 IETF RFC 791 (1981-09): “Internet Protocol“. 23 Void 24 Void 25 3GPP TS 23.236: “Intra-domain connection of Radio Access Network (RAN) nodes to multiple Core Network (CN)
29、 nodes“. 26 3GPP TS 23.251: “Network sharing; Architecture and functional description“. 27 3GPP TS23.246: Multimedia Broadcast/Multicast Service (MBMS) Architecture and functional description 28 3GPP TS 25.346: “Introduction of the Multimedia Broadcast Multicast Service (MBMS) in the Radio Access Ne
30、twork (RAN); Stage 2”. 29 3GPP TS 23.060: “General Packet Radio Service (GPRS); Service description; Stage 2“. 30 3GPP TS 37.320: “Universal Terrestrial Radio Access (UTRA) and Evolved Universal Terrestrial Radio Access (E-UTRA); Radio measurement collection for Minimization of Drive Tests (MDT); Ov
31、erall description; Stage 2“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TS 25.401 1 apply. MBMS related terms and definitions: MBMS bearer service: as defined in TS 23.246 27. MBMS RAB: as defined in TS 25.346 28. MBMS
32、 Iu signalling connection: as defined in TS 25.346 28. MBMS session start: as defined in TS 25.346 28. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: 3G-MSC 3rdGeneration Mobile Switching Centre 3G-SGSN 3rdGeneration Serving GPRS Support Node AAL ATM A
33、daptation Layer ATM Asynchronous Transfer Mode BC Broadcast BSSMAP Base Station Subsystem Management Application Part CBS Cell Broadcast Service CC Connection ConfirmCN Core NetworkCR Connection Release CREF Connection RefusalCS Circuit Switched GT Global TitleGTP-U GPRS Tunnelling Protocol GWCN Gat
34、eway Core Network IMSI International Mobile Subscriber Identity IP Internet Protocol ISDN Integrated Services Digital Network L-GW Local GateWay ETSI ETSI TS 125 410 V14.0.0 (2017-04)83GPP TS 25.410 version 14.0.0 Release 14LA Location Area M3UA MTP3 User Adaptation Layer MBMS Multimedia Broadcast M
35、ulticast Service MDT Minimization of Drive-Tests MOCN Multi Operator Core Network NAS Non Access Stratum NACC Network Assisted Cell Change NNSF NAS Node Selection Function O - procedures to perform SRNS relocation, intra-system handover, inter-system handover and inter-system change; - procedures to
36、 support the Cell Broadcast service; - a set of general procedures, not related to a specific UE; - the separation of each UE on the protocol level for user specific signalling management; - the transfer of NAS signalling messages between UE and CN; - location services by transferring requests from
37、the CN to UTRAN, and location information from UTRAN to CN. The location information may comprise a geographical area identifier or global co-ordinates with uncertainty parameters; - simultaneous access to multiple CN domains for a single UE; - mechanisms for resource reservation for packet data str
38、eams; - procedures to support MBMS bearer services; - mechanisms to support SIPTO at Iu-PS for a specific UE (optional); - mechanisms to support SIPTO at the Local Network with standalone GW for a specific UE (optional). 4.5 IuInterface Characteristics 4.5.1 Use of Transport Network User Plane as Si
39、gnalling Bearer 4.5.1.1 Use of SCCP 4.5.1.1.1 General The SCCP (ITU-T Rec. Q.711 9 /ITU-T Rec. Q.712 10/ITU-T Rec. Q.713 11/ITU-T Rec. Q.714 12) is used to support signalling messages between the CNs and the RNC. One user function of the SCCP, called Radio Access Network Application Part (RANAP), is
40、 defined. The RANAP uses one SCCP signalling connection per active UE and CN for the transfer of layer 3 messages. RANAP also uses one SCCP signalling connection per MBMS bearer service. Both connectionless and connection-oriented procedures are used to support the RANAP. TS 25.413 6 explains whethe
41、r connection oriented or connectionless services should be used for each layer 3 procedure. ETSI ETSI TS 125 410 V14.0.0 (2017-04)123GPP TS 25.410 version 14.0.0 Release 14RANAP may use SSN, SPC and/or GT and any combination of them as addressing schemes for the SCCP. Which of the available addressi
42、ng scheme to use for the SCCP is an operator matter. When GT addressing is utilised, the following settings shall be used: - SSN Indicator = 1 (RANAP SSN as defined in TS 23.003 13 shall always be included). - Global Title Indicator = 0100 (GT includes translation type, numbering plan, encoding sche
43、me and nature of address indicator). - Translation Type = 0000 0000 (not used). - Numbering Plan = 0001 (E.163/4). - Nature of Address Indicator = 000 0100 (International Significant Number). - Encoding Scheme = 0001 or 0010 (BCD, odd or even). - Routing indicator = 0 or 1 (route on GT or PC/SSN). W
44、hen used, the GT shall be the E.164 address of the relevant node. The following subclauses describe the use of SCCP connections for RANAP transactions. Subclause 4.5.1.2 describes the connection establishment procedures. Subclause 4.5.1.3 describes the connection release procedures. Subclause 4.5.1.
45、4 describes abnormal conditions. 4.5.1.1.2 SCCP Connection Establishment procedure A new SCCP connection is established when information related to the communication between a UE and the network has to be exchanged between RNC and CN, and no SCCP connection exists between the CN and the RNC involved
46、, for the concerned UE. A new SCCP connection is also established for MBMS service purpose between the RNC and CN. Various SCCP connection establishment cases have to be distinguished: i) RNC Initiated SCCP Signalling Connection for a UE; ii) CN Initiated SCCP Signalling Connection for a UE; iii) CN
47、 Initiated SCCP Signalling Connection for an MBMS Service. The above cases are the only cases currently identified for SCCP connection establishment. Others may emerge in the future. 4.5.1.1.2.1 Establishment procedure in case i The SCCP signalling connection establishment is initiated, by the RNC,
48、at the reception of the first layer 3 non access stratum message from the UE or at the execution of the enhanced relocation or at the initiation of the UE Registration Query procedure. Initiation The RNC sends SCCP CONNECTION REQUEST message to the Core Network. A RANAP message shall be included in
49、the user data field of the SCCP CONNECTION REQUEST message when the RANAP message size is less than or equal to the maximum size of the user data field in the SCCP CONNECTION REQUEST message. When the RANAP message is longer than the maximum size, the user data field shall not be included in the SCCP CONNECTION REQUEST message. If the Core Network receives an SCCP CONNECTION REQUEST message for a UE for which an SCCP connection already exists, or if the Core Network receives an SCCP CONNECTION
