1、 ETSI TS 125 430 V14.0.0 (2017-04) Universal Mobile Telecommunications System (UMTS); UTRAN Iub Interface: general aspects and principles (3GPP TS 25.430 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 125 430 V14.0.0 (2017-04)13GPP TS 25.430 version 14.0.0 Release 14Reference RTS/TS
2、GR-0325430ve00 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 docume
3、nt 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
4、 of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the documen
5、t may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https:/port
6、al.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 modifi
7、ed 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 125 430 V14.0.0 (2017-04)23GPP TS 25.430 version 14.0.0 Release 14Int
9、ellectual 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 Ri
10、ghts (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,
11、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 produced by
12、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 between GS
13、M, 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 th
14、e 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 125 430 V14.0.0 (2017-04)33GPP TS 25.430 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g
15、3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 7g33.3 Specification Notations 8g34 General Aspects 9g34.1 Introduction 9g34.2 Iub Interface General Principles . 9g34.3 Iub Interface Specification Object
16、ives . 9g34.4 Iub Interface Capabilities . 9g34.4.1 Radio application related signalling 9g34.4.2 Iub/Iur DCH data stream . 10g34.4.3 Iub RACH data stream 10g34.4.4 Iub CPCH data stream FDD . 10g34.4.5 Iub FACH data stream 10g34.4.6 Iub DSCH data stream TDD 10g34.4.7 Iub USCH data stream TDD 10g34.4
17、.8 Iub PCH data stream . 10g34.4.9 Iub FDD TFCI2 data stream . 10g34.4.10 Iub HS-DSCH data stream 11g34.4.11 Iub E-DCH data stream . 11g34.5 Iub Interface Characteristics . 11g34.5.1 Mapping of Iub data streams. 11g34.6 Iub Protocols 11g35 Functions of the IubInterface Protocols 12g35.1 Iub Function
18、s 12g35.2 Functional split over Iub . 13g35.2.1 Management of Iub Transport Resources . 13g35.2.2 Logical O 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,
19、 corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 125 430 V14.0.0 (2017-04)63GPP TS 25.430 version 14.0.0 Release 141 Scope The present document is an introduction to the TSG RAN TS 25.43x series of UMTS Tech
20、nical Specifications that define 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) for the UMTS system. 2 References The following documents contain provisio
21、ns which, through reference 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
22、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 25.401: “UTRAN overall description“
23、. 2 3GPP TS 25.442: “UTRAN implementation-specific O Overall description; Stage 2“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: Propagation delay (PD): it is the round trip propagation delay of the radio signal
24、from the Node B to the UE and back to the BS in one chip resolution. ETSI ETSI TS 125 430 V14.0.0 (2017-04)73GPP TS 25.430 version 14.0.0 Release 14Timing Advance (TA): it is the amount of time, expressed in number of chips, by which the transmission of an uplink burst is anticipated by the UE in or
25、der to be received by the cell inside the corresponding time slot. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AAL2 ATM Adaptation Layer type 2 AAL5 ATM Adaptation Layer type 5 AICH Acquisition Indication Channel ALCAP Access Link Control Applicatio
26、n Part ATM Asynchronous Transfer Mode BCH Broadcast Channel BCCH Broadcast Control Channel CCH Control Channel CPCId Common Physical Channel Identifier CPICH Common Pilot Channel CTCId Common Transport Channel Identifier CRNC Controlling Radio Network Controller DCH Dedicated Transport Channel DPCCH
27、 Dedicated Physical Control Channel DPCH Dedicated Physical Channel DSCH Down-link Shared Channel E-DCH Enhanced Dedicated Channel FACH Forward Access Channel FAUSCH Fast Up-link Signalling Channel FDD Frequency Division Duplex F-DPCH Fractional DPCH HARQ Hybrid Automatic Repeat Request HS-DSCH High
28、 Speed Downlink Shared Channel IP Internet Protocol MICH MBMS notification Indicator Channel NBAP Node B Application Part O - A means to indicate to the SRNC, for the purposes of re-ordering, the CFN and Subframe Number that have been added by the Node B (TS 25.427 11). 4.5 Iub Interface Characteris
29、tics 4.5.1 Mapping of Iub data streams DCH One Iub DCH data stream is carried on one transport bearer. For each DCH data stream a transport bearer must be established over Iub, except in the case of coordinated DCHs in which case a set of coordinated DCHs are multiplexed onto the same transport bear
30、er. RACH One Iub RACH data stream is carried on one transport bearer. For each RACH in a cell, a transport bearer must be established over the Iub interface. FACH One Iub FACH data stream is carried on one transport bearer. For each FACH in a cell, a transport bearer must be established over the Iub
31、 Interface, except in case of transport bearer sharing for MBMS, where only one transport bearer is established at the Iub interface for several FACHs belonging to different cells. TDD - DSCH One Iub DSCH data stream is carried on one transport bearer. For each DSCH data stream, a transport bearer m
32、ust be established over the Iub interface. HS-DSCH One Iub HS-DSCH data stream is carried on one transport bearer. For each HS-DSCH data stream, a transport bearer must be established over the Iub interface. E-DCH One Iub E-DCH data stream is carried on one transport bearer. For each E-DCH data stre
33、am, a transport bearer must be established over the Iub interface. TDD - USCH One Iub USCH data stream is carried on one transport bearer. For each USCH data stream, a transport bearer must be established over the Iub interface. PCH One Iub PCH data stream is carried on one transport bearer. 4.6 Iub
34、 Protocols There shall exist a clear separation between the radio network layer and the transport layer. Therefore, the radio network signalling and Iub data streams are separated from the data transport resource and traffic handling as shown in figure 1. This resource and traffic handling is contro
35、lled by the Transport Signalling. The Transport Signalling is carried by a Signalling Bearer over the Iub interface. ETSI ETSI TS 125 430 V14.0.0 (2017-04)123GPP TS 25.430 version 14.0.0 Release 14RadioSignalingProtocolIub DataStreamsTransportSignallingSignallingBearerDataTransportRadioNetworklayerT
36、ransportlayerFigure 1: Separation of Radio Network protocols and transport over Iub 5 Functions of the IubInterface Protocols 5.1 Iub Functions The list of functions on the Iub interface is the following: 1. Management of Iub Transport Resources; 2. Logical O - Cell Configuration Management; - Radio
37、 Network Performance Measurements; - Resource Event Management; - Common Transport Channel Management; - Radio Resource Management; - Radio Network Configuration Alignment; 3. Implementation Specific O 4. System Information Management; 5. Traffic Management of Common Channels: - Admission Control; -
38、 Power Management; - Data Transfer; 6. Traffic Management of Dedicated Channels: - Radio Link Management; - Radio Link Supervision; - Channel Allocation / De-allocation; - Power Management; - Measurement Reporting; ETSI ETSI TS 125 430 V14.0.0 (2017-04)133GPP TS 25.430 version 14.0.0 Release 14- Ded
39、icated Transport Channel Management; - Data Transfer; 7. Traffic Management of Shared Channels: - Channel Allocation / De-allocation; - Power Management; - Transport Channel Management; - Dynamic Physical Channel Assignment; - Radio Link Management; - Data Transfer; 8. Timing and Synchronization Man
40、agement: - Transport Channel Synchronization (Frame synchronization); - Node B - RNC node Synchronization; - Inter Node B node Synchronization. 5.2 Functional split over Iub 5.2.1 Management of Iub Transport Resources The underlying transport resources (AAL2 and UDP/IP transport bearers) shall be se
41、t up and controlled by the RNC. Further information on these functions is provided in the transport layer specifications (TS 25.432 3, TS 25.434 8, TS 25.426 10). 5.2.2 Logical O - FDD - based on quality information associated to each TBS (selection-combining); - TDD - based on the presence/absence
42、of the signal (selection). When requesting the addition of a new cell for a UE-UTRAN connection, the RNC can explicitly request to the Node B a new Iub data stream, in which case the combining and splitting function within the Node B is not used for that cell. Otherwise, the Node B takes the decisio
43、n whether combining and splitting function is used inside the Node B for that cell i.e. whether a new Iub data stream shall be added or not. The internal Node B handling of the combining/splitting of radio frames is controlled by the Node B. For E-DCH combining of UL streams in the Node B is mandato
44、ry as described in TS 25.319 14. 5.2.6.2 Handover Decision To support mobility of the UE to UTRAN connection between cells, UTRAN uses measurement reports from the UE and detectors at the cells. The RNC takes the decision to add or delete cells from the connection. 5.2.6.3 Allocation of Physical Cha
45、nnel Resources In FDD allocation of downlink channelisation codes of cells belonging to Node B is performed in the CRNC. In TDD allocation of uplink and downlink physical channel resources of cells belonging to Node B is performed in the CRNC. 5.2.6.4 UpLink Power Control This function controls the
46、level of the transmitted power in order to minimise interference and keep the quality of the connections. The function uplink Outer Loop Power Control located in the SRNC sets the target quality for the uplink Inner Loop Power Control function, for E-DCH the Node B reports the number of HARQ retrans
47、missions to the SRNC as an input to the Outer Loop Power Control function. In FDD and 1.28Mcps TDD, Inner Loop Power Control Function is located in Node B, while in 3.84Mcps TDD it is located in the UE. ETSI ETSI TS 125 430 V14.0.0 (2017-04)153GPP TS 25.430 version 14.0.0 Release 145.2.6.5 Down-Link
48、 Power Control This function controls the level of the downlink transmitted power. In FDD it is also used to correct the downlink power drifting between several radio links. A SRNC regularly (or under some algorithms) shall send the target down link power range based on the measurement report from U
49、E. 5.2.6.6 Admission Control The Admission Control function based on uplink interference and downlink power is located in the CRNC. Node B shall report uplink interference measurements and downlink power information over the Iub. The CRNC controls this reporting function, i.e. if this information needs to be reported and the period of these reports. 5.2.6.7 Power and Interference Reporting A threshold for reporting may be given to Node B from the CRNC to prevent frequent reporting over the Iub. Node B shall have a function to measure “uplink inter
