1、 ETSI TS 125 414 V14.0.0 (2017-04) Universal Mobile Telecommunications System (UMTS); UTRAN Iu interface data transport and transport signalling (3GPP TS 25.414 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 125 414 V14.0.0 (2017-04)13GPP TS 25.414 version 14.0.0 Release 14Reference
2、 RTS/TSGR-0325414ve00 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
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7、 modified 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 ben
8、efit of 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 125 414 V14.0.0 (2017-04)23GPP TS 25.414 version 14.0.0 Releas
9、e 14Intellectual 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 Prop
10、erty Rights (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 sea
11、rches, has 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 produ
12、ced by ETSI 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 bet
13、ween GSM, 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.
14、2 of the 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 125 414 V14.0.0 (2017-04)33GPP TS 25.414 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Forewo
15、rd . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 7g34 Data Link Layer . 8g34.1 ATM Transport Option 8g34.2 IP Transport Option 8g35 Circuit switched domain . 8g35.1 Transport network user plane . 8
16、g35.1.1 General 8g35.1.2 ATM Transport Option . 9g35.1.2.1 ATM Adaptation Layer 2 9g35.1.2.1.1 AAL2-Segmentation and Reassembly Service Specific Convergence Sublayer (I.366.1) 9g35.1.2.1.2 AAL2-specification (I.363.2) 9g35.1.3 IP Transport Option 9g35.1.3.1 General 9g35.1.3.2 UDP/IP 9g35.1.3.3 RTP .
17、 10g35.1.3.3.1 RTP Header . 10g35.1.3.3.1.4 Contributing Source (CSRC) count . 10g35.1.3.3.1.5 Marker Bit 10g35.1.3.3.1.6 Payload Type . 10g35.1.3.3.1.7 Sequence Number 10g35.1.3.3.1.8 Timestamp . 10g35.1.3.3.1.9 Synchronisation Source (SSRC) 11g35.1.3.3.1.10 CSRC list . 11g35.1.3.3.2 RTP Payload 11
18、g35.1.3.4 RTCP . 11g35.1.3.5 Diffserv code point marking . 11g35.2 Transport network control plane 11g35.2.1 General 11g35.2.2 Transport Signalling for the ATM Transport Option 12g35.2.2.1 Signalling protocol (ALCAP) . 12g35.2.2.1.1 AAL2 Signalling Protocol (Q.2630.2) . 12g35.2.2.2 Signalling transp
19、ort converter . 12g35.2.2.2.1 AAL2 MTP3B Signalling Transport Converter (Q.2150.1) 12g35.2.2.3 MTP3b (Q.2210) . 12g35.2.2.4 SSCF-NNI (Q.2140) . 12g35.2.2.5 SSCOP (Q.2110) . 12g35.2.2.6 ATM Adaptation Layer Type 5 (I.363.5) 13g35.3 Interworking between ATM and IP Transport Options 13g35.3.1 Introduct
20、ion. 13g35.3.2 Interworking Alternatives . 13g36 Packet switched domain . 13g36.1 Transport network user plane . 13g36.1.1 General 13g36.1.2 ATM Transport Option . 14g3ETSI ETSI TS 125 414 V14.0.0 (2017-04)43GPP TS 25.414 version 14.0.0 Release 146.1.2.1 General 14g36.1.2.2 GTP-U . 14g36.1.2.3 UDP /
21、IP . 14g36.1.2.4 ATM Adaptation Layer Type 5 (I.363.5) 14g36.1.2.5 IP/ATM . 15g36.1.3 IP Transport Option 15g36.1.3.1 General 15g36.1.3.2 GTP-U . 15g36.1.3.3 UDP /IP . 15g36.1.3.4 Diffserv code point marking . 16g36.2 Transport network control plane 16g37 Broadcast Domain 16g37.1 Transport network u
22、ser plane . 16g37.1.1 General 16g37.1.2 ATM Transport Option . 16g37.1.2.1 General 16g37.1.2.2 TCP/IP. 16g37.1.2.3 ATM Adaptation Layer Type 5 (I.363.5) 17g37.1.2.4 IP/ATM . 17g37.1.3 IP Transport Option 17g37.1.3.1 General 17g37.1.3.3 TCP /IP 17g37.1.3.4 Diffserv code point marking . 17g37.2 Transp
23、ort network control plane 17g3Annex A (informative): IP-ATM Interworking . 18g3A.1 Application of IP tunnelling in IP-ATM interworking alternative 1 in case of no direct ATM connectivity at the IP 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y t
24、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 125 414 V14.0.0 (2017-04)63GPP TS 25.414 version 14.0.0 Release 141 S
25、cope The present document specifies the standards for user data transport protocols and related signalling protocols to establish user plane transport bearers over the UTRAN Iu interface. 2 References The following documents contain provisions which, through reference in this text, constitute provis
26、ions 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, the latest version applies. In th
27、e 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 I.361 (1995-11): “B-ISDN ATM layer specification“. 2 ITU-T Recommendation I.363.2
28、 (2000-11): “B-ISDN ATM Adaptation layer specification: Type 2 AAL“. 3 ITU-T Recommendation I.363.5 (1996-08): “B-ISDN ATM Adaptation layer specification: Type 5 AAL“. 4 ITU-T Recommendation I.366.1 (1998-06): “Segmentation and Reassembly Service Specific Convergence Sublayer for the AAL type 2“. 5
29、ITU-T Recommendation E.164 (1997-05): “The international public telecommunication numbering plan“. 6 ITU-T Recommendation Q.2110 (1994-07): “B-ISDN ATM adaptation layer - Service Specific Connection Oriented Protocol (SSCOP)“. 7 ITU-T Recommendation Q.2140 (1995-02): “B-ISDN ATM adaptation layer - S
30、ervice Specific Coordination Function for Support of Signalling at the Network Node Interface (SSCF-NNI)“. 8 ITU-T Recommendation Q.2150.1 (1999-12): “AAL type 2 signalling transport converter on broadband MTP“. 9 ITU-T Recommendation Q.2210 (1996-07): “Message transfer part level 3 functions and me
31、ssages using the services of ITU-T Recommendation Q.2140“. 10 ITU-T Recommendation Q.2630.1 (1999-12): “AAL type 2 signalling protocol (Capability Set 1)“. 11 ITU-T Recommendation X.213 (1995-11): “Information technology - Open systems interconnection - Network Service Definitions“. 12 IETF RFC 768
32、(1980-08): “User Datagram Protocol“. 13 IETF RFC 791 (1981-09): “Internet Protocol“. 14 IETF RFC 2684 (1999-09): “Multiprotocol Encapsulation over ATM Adaptation Layer 5“. 15 IETF RFC 2225 (1998-04): “Classical IP and ARP over ATM“. 16 IETF RFC 2460 (1998-12): “Internet Protocol, Version 6 (IPv6) Sp
33、ecification“. 17 3GPP TS 29.060: “General Packet Radio Service (GPRS); GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface “. ETSI ETSI TS 125 414 V14.0.0 (2017-04)73GPP TS 25.414 version 14.0.0 Release 1418 IETF RFC 793 (1981-09): “Transmission Control Protocol“. 19 IETF RFC 2474 (1998-12
34、): “Definition of the Differentiated Services Field (DS Field) in the Ipv4 and Ipv6 Headers“. 20 ITU-T Implementors guide (1999-12) for recommendation Q.2210 (1996-07). 21 ITU-T Recommendation Q.2630.2 (2000-12): “AAL type 2 signalling protocol (Capability Set 2)“. 22 IETF RFC 1889 (1996-01): “RTP:
35、A Transport Protocol for Real Time Applications“. 23 IETF RFC 1890 (1996-01): “RTP Profile for Audio and Video Conferences with Minimal Control“. 24 3GPP TS 25.415: “UTRAN Iu Interface User Plane Protocols“ 25 IETF RFC 1661 (1994-07): “The Point-to-Point Protocol (PPP)“. 26 IETF RFC 1662 (1994-07):
36、“PPP in HDLC-like Framing“. 27 IETF RFC 2507 (1999-02): “IP header compression“. 28 IETF RFC 1990 (1996-08): “The PPP Multilink Protocol (MP)“. 29 IETF RFC 2686 (1996-09): “The Multi-Class Extension to Multi-Link PPP“. 30 IETF RFC 2509 (1999-02): “IP Header Compression over PPP“. 31 Void 32 IETF RFC
37、 3153 (2001-08): “PPP Multiplexing“. 33 IETF RFC 2364 (1998-07): “PPP over AAL5“. 34 IETF RFC 3031 (2001-01): “Multiprotocol Label Switching Architecture“. 35 ITU-T Recommendation E.191 (2000-03): “B-ISDN addressing“. 36 3GPP TS 25.401: “UTRAN overall description“. 3 Definitions and abbreviations 3.
38、1 Definitions For the purposes of the present document, the following terms and definitions apply: Access Link Control Application Part (ALCAP): generic name for the transport signalling protocols used to set-up and teardown transport bearers 3.2 Abbreviations For the purposes of the present documen
39、t, the following abbreviations apply: AAL ATM Adaptation Layer AESA ATM End System Address ALCAP Access Link Control Application Part ARP Address Resolution Protocol ATM Asynchronous Transfer Mode CN Core Network GTP GPRS Tunnelling Protocol HDLC High-level Data Link Control IP Internet Protocol ETS
40、I ETSI TS 125 414 V14.0.0 (2017-04)83GPP TS 25.414 version 14.0.0 Release 14LC Link Characteristics LIS Logical IP Subnet MTP3b Message Transfer Part level 3 for Q.2140 NSAP Network Service Access Point PDU Protocol Data Unit PPP Point-to-Point ProtocolRFC Request For Comment RNC Radio Network Contr
41、oller RTCP Real-time Transport Control Protocol RTP Real-time Transport Protocol SA Service Area SABP Service Area Broadcast Protocol SABS Service Area Broadcast Service SAR Segmentation and Reassembly SCSF-NNI Service Specific Coordination Function-Network Node Interface SSCOP Service Specific Conn
42、ection Oriented Protocol SSCS Service Specific Convergence Sublayer SSRC Synchronisation Source TCP Transmission Control Protocol TEID Tunnel Endpoint Identifier UDP User Datagram Protocol VC Virtual Circuit 4 Data Link Layer 4.1 ATM Transport Option ATM shall be used in the transport network user p
43、lane and the transport network control plane according to ITU-T Recommendation I.361 1. The structure of the cell header used in the UTRAN Iu interface is the cell header format and encoding at NNI (see figure 3/I.361). 4.2 IP Transport Option An RNC/CN-node supporting IP transport option on the Iu
44、interface shall support PPP protocol with HDLC framing (IETF RFC 1661 25, IETF RFC 1662 26). NOTE: This does not preclude the single implementation and use of any other protocols (e.g. PPPMux /AAL5/ ATM (IETF RFC 3153 32, IETF RFC 2364 33), PPP/AAL2/ATM, Ethernet, MPLS/ATM (IETF RFC 3031 34), etc.)
45、fulfilling the UTRAN requirements toward the upper layers. An RNC/CN-node supporting IP transport option on the Iu interface and having interfaces connected via low bandwidth PPP links like E1/T1/J1 shall also support IP Header Compression (IETF RFC 2507 27) and the PPP extensions ML/MC-PPP (IETF RF
46、C 1990 28, IETF RFC 2686 29). In this case the negotiation of header compression (IETF RFC 2507 27) over PPP shall be performed via IETF RFC 2509 30. 5 Circuit switched domain 5.1 Transport network user plane 5.1.1 General There are two options for the transport layer for data streams over Iu-CS: 1)
47、 ATM based Transport (ATM transport option) ETSI ETSI TS 125 414 V14.0.0 (2017-04)93GPP TS 25.414 version 14.0.0 Release 142) IP based Transport (IP transport option) The following figure shows the protocol stacks of the two options. AAL-2 SAR SSCS (I.366.1) AAL2 (I.363.2) Physical Layer ATM (I.361)
48、 Protocol Stack for the ATM transport option UDP (RFC 768) Physical Layer Data Link Layer Protocol Stack for the IP transport option IPv6 (RFC 2460) IPv4 optional (RFC 791) RTP (RFC 1889) Figure 1. Transport network layer for data streams over Iu-CS. 5.1.2 ATM Transport Option 5.1.2.1 ATM Adaptation
49、 Layer 2 5.1.2.1.1 AAL2-Segmentation and Reassembly Service Specific Convergence Sublayer (I.366.1) Service Specific Segmentation and Reassembly (SSSAR) sublayer of ITU-T Recommendation I.366.1 4 is used for the segmentation and reassembly of AAL2 SDUs (i.e., only SSSAR is used from ITU-T Recommendation I.366.1). 5.1.2.1.2 AAL2-specification (I.363.2) AAL2 shall be used according to ITU-T Recommendation I.363.2 2. 5.1.3 IP Transport Option 5.1.3.1 General In the IP transport opt
