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Content for  TS 25.414  Word version:  16.0.0

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1  ScopeWord‑p. 6

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 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, 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 implicitly refers to the latest version of that document in the same Release as the present document.
ITU-T Recommendation I.361 (1995-11): "B-ISDN ATM layer specification".
ITU-T Recommendation I.363.2 (2000-11): "B-ISDN ATM Adaptation layer specification: Type 2 AAL".
ITU-T Recommendation I.363.5 (1996-08): "B-ISDN ATM Adaptation layer specification: Type 5 AAL".
ITU-T Recommendation I.366.1 (1998-06): "Segmentation and Reassembly Service Specific Convergence Sublayer for the AAL type 2".
ITU-T Recommendation E.164 (1997-05): "The international public telecommunication numbering plan".
ITU-T Recommendation Q.2110 (1994-07): "B-ISDN ATM adaptation layer - Service Specific Connection Oriented Protocol (SSCOP)".
ITU-T Recommendation Q.2140 (1995-02): "B-ISDN ATM adaptation layer - Service Specific Coordination Function for Support of Signalling at the Network Node Interface (SSCF-NNI)".
ITU-T Recommendation Q.2150.1 (1999-12): "AAL type 2 signalling transport converter on broadband MTP".
ITU-T Recommendation Q.2210 (1996-07): "Message transfer part level 3 functions and messages using the services of ITU-T Recommendation Q.2140".
ITU-T Recommendation Q.2630.1 (1999-12): "AAL type 2 signalling protocol (Capability Set 1)".
ITU-T Recommendation X.213 (1995-11): "Information technology - Open systems interconnection - Network Service Definitions".
RFC 768  (1980-08): "User Datagram Protocol".
RFC 791  (1981-09): "Internet Protocol".
RFC 2684  (1999-09): "Multiprotocol Encapsulation over ATM Adaptation Layer 5".
RFC 2225  (1998-04): "Classical IP and ARP over ATM".
RFC 2460  (1998-12): "Internet Protocol, Version 6 (IPv6) Specification".
TS 29.060: "General Packet Radio Service (GPRS); GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface ".
RFC 793  (1981-09): "Transmission Control Protocol".
RFC 2474  (1998-12): "Definition of the Differentiated Services Field (DS Field) in the Ipv4 and Ipv6 Headers".
ITU-T Implementor's guide (1999-12) for recommendation Q.2210 (1996-07).
ITU-T Recommendation Q.2630.2 (2000-12): "AAL type 2 signalling protocol (Capability Set 2)".
RFC 1889  (1996-01): "RTP: A Transport Protocol for Real Time Applications".
RFC 1890  (1996-01): "RTP Profile for Audio and Video Conferences with Minimal Control".
TS 25.415: "UTRAN Iu Interface User Plane Protocols"
RFC 1661  (1994-07): "The Point-to-Point Protocol (PPP)".
RFC 1662  (1994-07): "PPP in HDLC-like Framing".
RFC 2507  (1999-02): "IP header compression".
RFC 1990  (1996-08): "The PPP Multilink Protocol (MP)".
RFC 2686  (1996-09): "The Multi-Class Extension to Multi-Link PPP".
RFC 2509  (1999-02): "IP Header Compression over PPP".
[31]  Void
RFC 3153  (2001-08): "PPP Multiplexing".
RFC 2364  (1998-07): "PPP over AAL5".
RFC 3031  (2001-01): "Multiprotocol Label Switching Architecture".
ITU-T Recommendation E.191 (2000-03): "B-ISDN addressing".
TS 25.401: "UTRAN overall description".

3  Definitions and abbreviationsWord‑p. 7

3.1  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 document, the following abbreviations apply:
ATM Adaptation Layer
ATM End System Address
Access Link Control Application Part
Address Resolution Protocol
Asynchronous Transfer Mode
Core Network
GPRS Tunnelling Protocol
High-level Data Link Control
Internet Protocol
Link Characteristics
Logical IP Subnet
Message Transfer Part level 3 for Q.2140
Network Service Access Point
Protocol Data Unit
Point-to-Point Protocol
Request For Comment
Radio Network Controller
Real-time Transport Control Protocol
Real-time Transport Protocol
Service Area
Service Area Broadcast Protocol
Service Area Broadcast Service
Segmentation and Reassembly
Service Specific Coordination Function-Network Node Interface
Service Specific Connection Oriented Protocol
Service Specific Convergence Sublayer
Synchronisation Source
Transmission Control Protocol
Tunnel Endpoint Identifier
User Datagram Protocol
Virtual Circuit

4  Data Link LayerWord‑p. 8

4.1  ATM Transport Option

ATM shall be used in the transport network user plane 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 |R5|

An RNC/CN-node supporting IP transport option on the Iu interface shall support PPP protocol with HDLC framing (IETF RFC 1661 [25], IETF RFC 1662 [26]).
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 RFC 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].

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