1、 ETSI TS 125 430 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); UTRAN Iub Interface: general aspects and principles (3GPP TS 25.430 version 15.0.0 Release 15) TECHNICAL SPECIFICATION ETSI ETSI TS 125 430 V15.0.0 (2018-07)13GPP TS 25.430 version 15.0.0 Release 15Reference RTS/TS
2、GR-0325430vf00 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
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7、ed without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETMare trademarks
8、 of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 125 430 V15.0.0 (2018-07)23GPP TS 25.430 version 15.0.0 Re
9、lease 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables 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
10、 314: “Intellectual Property 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 investig
11、ation, including IPR searches, 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. Trademarks The present document m
12、ay include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in th
13、e present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifica
14、tions 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, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal v
15、erbs 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 Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT
16、allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 125 430 V15.0.0 (2018-07)33GPP TS 25.430 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g31 Scope 6g32 References 6g33 Definitions and abbreviations
17、. 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 Objectives . 9g34.4 Iub Interface Capabilities . 9g34.4.1 Radio application related signalling 9g34.4.2 Iub
18、/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 10g34.4.8 Iub PCH data stream . 10g34.4.9 Iub FDD TFCI2 data stream . 10g34.4.10 Iub HS-DSCH data stream 10g
19、34.4.11 Iub E-DCH data stream . 10g34.5 Iub Interface Characteristics . 11g34.5.1 Mapping of Iub data streams. 11g34.6 Iub Protocols 11g35 Functions of the IubInterface Protocols 12g35.1 Iub Functions 12g35.2 Functional split over Iub . 13g35.2.1 Management of Iub Transport Resources . 13g35.2.2 Log
20、ical 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, corrections, updates, etc. z the third digit is incremented when editorial only changes have been in
21、corporated in the document. ETSI ETSI TS 125 430 V15.0.0 (2018-07)63GPP TS 25.430 version 15.0.0 Release 151 Scope The present document is an introduction to the TSG RAN TS 25.43x series of UMTS Technical Specifications that define the Iub Interface. The Iub interface is a logical interface for the
22、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 provisions which, through reference in this text, constitute provisions of the present document. g404 Referen
23、ces are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. g404 For a specific reference, subsequent revisions do not apply. g404 For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
24、 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“. 2 3GPP TS 25.442: “UTRAN implementation-specific O Overall description; Stage 2“. 3 Definitions and abbrevia
25、tions 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 from the Node B to the UE and back to the BS in one chip resolution. ETSI ETSI TS 125 430 V15.0.0 (2018-07)73G
26、PP TS 25.430 version 15.0.0 Release 15Timing 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 order to be received by the cell inside the corresponding time slot. 3.2 Abbreviations For the purposes of the p
27、resent 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 Application Part ATM Asynchronous Transfer Mode BCH Broadcast Channel BCCH Broadcast Control Channel CCH Control Channel
28、 CPCId Common Physical Channel Identifier CPICH Common Pilot Channel CTCId Common Transport Channel Identifier CRNC Controlling Radio Network Controller DCH Dedicated Transport Channel DPCCH Dedicated Physical Control Channel DPCH Dedicated Physical Channel DSCH Down-link Shared Channel E-DCH Enhanc
29、ed 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 Speed Downlink Shared Channel IP Internet Protocol MICH MBMS notification Indicator Channel NBAP Node B Appli
30、cation 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 Characteristics 4.5.1 Mapping of Iub data streams DCH One Iub DCH data stream is carried on one transport bearer. For eac
31、h 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 bearer. RACH One Iub RACH data stream is carried on one transport bearer. For each RACH in a cell, a transport bea
32、rer 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 Interface, except in case of transport bearer sharing for MBMS, where only one transport bearer is establishe
33、d 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 must be established over the Iub interface. HS-DSCH One Iub HS-DSCH data stream is carried on one transport bea
34、rer. 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 stream, a transport bearer must be established over the Iub interface. TDD - USCH One Iub USCH data stream is carr
35、ied 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 Protocols There shall exist a clear separation between the radio network layer and the transport layer. There
36、fore, 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 controlled by the Transport Signalling. The Transport Signalling is carried by a Signalling Bearer over the Iub inte
37、rface. RadioSignalingProtocolIub DataStreamsTransportSignallingSignallingBearerDataTransportRadioNetworklayerTransportlayerFigure 1: Separation of Radio Network protocols and transport over Iub ETSI ETSI TS 125 430 V15.0.0 (2018-07)123GPP TS 25.430 version 15.0.0 Release 155 Functions of the IubInte
38、rface 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 Network Performance Measurements; - Resource Event Management; - Common Transport Channel Management; - Radio
39、 Resource Management; - Radio Network Configuration Alignment; 3. Implementation Specific O 4. System Information Management; 5. Traffic Management of Common Channels: - Admission Control; - Power Management; - Data Transfer; 6. Traffic Management of Dedicated Channels: - Radio Link Management; - Ra
40、dio Link Supervision; - Channel Allocation / De-allocation; - Power Management; - Measurement Reporting; - Dedicated Transport Channel Management; - Data Transfer; 7. Traffic Management of Shared Channels: - Channel Allocation / De-allocation; - Power Management; - Transport Channel Management; - Dy
41、namic Physical Channel Assignment; - Radio Link Management; - Data Transfer; 8. Timing and Synchronization Management: ETSI ETSI TS 125 430 V15.0.0 (2018-07)133GPP TS 25.430 version 15.0.0 Release 15- Transport Channel Synchronization (Frame synchronization); - Node B - RNC node Synchronization; - I
42、nter 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 set up and controlled by the RNC. Further information on these functions is provided in the transport layer spec
43、ifications (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 of the signal (selection). When requesting the addition of a new cell for a UE-UTRAN connection, the RNC can e
44、xplicitly 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 decision whether combining and splitting function is used inside the Node B for that cell i.e. whether a new Iub data
45、 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 mandatory as described in TS 25.319 14. 5.2.6.2 Handover Decision To support mobility of the UE to UTRAN connection b
46、etween 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 Channel Resources In FDD allocation of downlink channelisation codes of cells belonging to Node B is performed in
47、 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 level of the transmitted power in order to minimise interference and keep the quality of the connections. The
48、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 retransmissions to the SRNC as an input to the Outer Loop Power Control function. In FDD and 1.28Mcps TDD, Inner Loop
49、 Power Control Function is located in Node B, while in 3.84Mcps TDD it is located in the UE. 5.2.6.5 Down-Link 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 UE. 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
