1、 ETSI TR 125 925 V3.5.0 (2004-12)Technical Report Universal Mobile Telecommunications System (UMTS);Radio Interface for Broadcast/Multicast Services(3GPP TR 25.925 version 3.5.0 Release 1999)ETSI ETSI TR 125 925 V3.5.0 (2004-12) 1 3GPP TR 25.925 version 3.5.0 Release 1999 Reference RTR/TSGR-0225925v
2、350 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 Individual copies of the pres
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6、 by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2004. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON
7、 logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TR 125 925 V3.5.0 (2004-12) 2 3GPP TR 25.925 version 3.5.0 Release 1999 Intellectual Pr
8、operty 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 Rights (IPRs);
9、 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 (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches
10、, 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 Report (TR) has been produced by ETSI
11、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, UM
12、TS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp . ETSI ETSI TR 125 925 V3.5.0 (2004-12) 3 3GPP TR 25.925 version 3.5.0 Release 1999 Contents Intellectual Property Rights2 Foreword.2 Foreword.4 1 Scope 5 2 References 5 3 Abbreviations .6 4 Overview of Point-to-
13、multipoint Services and Requirements6 5 Common Model7 6 Cell Broadcast Service CBS.7 6.1 CBS (GSM)8 6.1.1 Impact on UTRAN functions8 6.1.1.1 Network and Protocol Architecture.8 6.1.1.2 BM-IWF9 6.1.1.2.1 Broadcast/Multicast Distribution for GSM based CB messages .9 6.1.1.2.2 Broadcast/Multicast Flow
14、Control.9 6.1.1.2.3 Administrative Data Management.10 6.2 CBS (ANSI-41) 10 6.2.1 Impact on UTRAN functions10 6.2.1.1 Network and Protocol Architecture.10 6.2.1.2 BM-IWF11 6.2.1.2.1 Broadcast/Multicast Distribution for ANSI-41 Core Network based CB messages11 6.3 Radio Interface Requirements 11 6.3.1
15、 Protocol architecture.11 6.3.2 Examples of procedures13 6.3.2.1 CB message storage in BMC entity and counting of CB message repetition13 6.3.2.2 BMC message scheduling .16 6.3.2.3 Activation of CB message reception by User .18 6.3.2.4 CB message reception with DRX19 6.3.2.5 Overflow .21 6.3.2.6 Und
16、erflow .22 6.3.3 UE capabilities with respect to CBS.23 6.3.4 CBS allocated radio resources 24 6.3.5 Impact on RRC .24 6.3.5.1 RRC Functions24 6.3.5.2 CB related system information24 6.3.6 Impact on BMC 24 6.3.6.1 R99-requirements: 24 6.3.6.2 BMC Functions .25 6.3.6.3 BMC Message Scheduling25 6.3.6.
17、4 CBS Discontinuous Reception (DRX)25 6.3.6.4.1 Level 1 scheduling: Scheduling on FACH regarding logical channel CTCH .26 6.3.6.4.2 Level 2 scheduling: DRX on CTCH content .27 6.3.6.4.2.1 Case 1: O 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y
18、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 TR 125 925 V3.5.0 (2004-12) 5 3GPP TR 25.925 version 3.5.0 Release 1999
19、 1 Scope The present document shall provide a general overview on radio interface related aspects of broadcast/multicast services. This report covers stage 2 and stage 3 aspects of the radio interface. This report is organised as follows: clause 4 gives an overview on the broadcast/multicast service
20、s and their requirements. Clause 5 provides a common model and describes aspects common to all point-to-multipoint services. Clause 6 is devoted to the Cell Broadcast Service describing the impacts on the interface functions and the protocol aspects. The present document covers only those items, whi
21、ch are in the scope of 3GPP TSG RAN WG 2. Information from Technical Specifications or other documents are provided when it is necessary to understand the requirements described. Table 1.1: Schedule of the broadcast/multicast services onto the UMTS phases and annual releases Release Broadcast/multic
22、ast service 1999 Cell Broadcast Service CBS (GSM) Cell Broadcast Service (ANSI-41) NOTE: A decision to map the services to releases is required for all other broadcast/multicast services. 2 References The following documents contain provisions, which, through reference in this text, constitute provi
23、sions 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 t
24、o 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 22.100: “UMTS Phase 1“. 2 3GPP TS 22.101: “UMTS Service Principle“. 3 3GPP TS 22.105: “Services and Service Capabilit
25、ies“. 4 3GPP TS 25.301: “Radio Interface Protocol Architecture“. 5 3GPP TS 25.302: “Services provided by the Physical Layer“. 6 3GPP TS 25.303: “UE Functions and Interlayer Procedures in Connected Mode“. 7 3GPP TS 25.304: “UE Procedures in Idle Mode“. 8 3GPP TS 25.321: “MAC Protocol Specification“.
26、9 3GPP TS 25.322: “RLC Protocol Specification“. 10 3GPP TS 25.331: “RRC Protocol Specification“. 11 3GPP TS 22.003: “Digital cellular telecommunications system (Phase 2+); Principles of telecommunication services supported by a GSM Public Land Mobile Network (PLMN)“. 12 3GPP TS 23.060: “General GPRS
27、 Service description; Stage 2“. 13 3GPP TS 23.041: “Technical realization of Cell Broadcast Service (CBS)“. ETSI ETSI TR 125 925 V3.5.0 (2004-12) 6 3GPP TR 25.925 version 3.5.0 Release 1999 14 3GPP 03.61: “Digital cellular telecommunications system (Phase 2+); Point To Multipoint Multicast Service D
28、escription; Stage 2“. 15 3GPP TS 23.110: “UMTS Access Stratum, Services and Functions“. 16 3GPP TS 25.324: “Broadcast/Multicast Protocol BMC“. 17 3GPP TS 24.012: “Short Message Service Cell Broadcast (SMS) Support on the Mobile Radio Interface“. 18 3GPP TS 25.402: “Synchronization in UTRAN Stage 2“.
29、 19 3GPP TS 25.419: “Service Area Broadcast Protocol SABP“. 20 TIA/EIA-637-A: “TR45 Short Message Service for Spread Spectrum Systems“. 21 3GPP TS 22.060: “General Radio Packet Service (GPRS), Stage 1“. 22 3GPP TS 25.212: “Multiplexing and channel coding (FDD)“. 23 3GPP TS 25.222: “Multiplexing and
30、channel coding (TDD)“. 3 Abbreviations For the purposes of the present document, the following abbreviations apply: BCCH Broadcast Control Channel BCH Broadcast Channel BMC Broadcast/Multicast Control BM-IWF Broadcast/Multicast Interworking Function CB Cell Broadcast CBS Cell Broadcast Service CCCH
31、Common Control Channel CTCH Common Traffic Channel CTCH-BS Common Traffic Channel Block Set DRX Discontinuous Reception FACH Forward Access Channel IP Internet ProtocolIP-M IP Multicast MDS Multimedia Distribution Service PTM Point-to-Multipoint PTM-G PTM Group Call PTM-M PTM Multicast SMS Short Mes
32、sage Service SMS-CB SMS Cell Broadcast UE User Equipment UMTS Universal Mobile Telecommunication System TB Transport Block TR Technical Report TS Technical Specification TrCH Transport channel UTRAN UMTS Terrestrial Radio Access Network 4 Overview of Point-to-multipoint Services and Requirements It
33、is agreed to have service continuity for GSM/GPRS point-to-multipoint services in UMTS (1 and 2). This means that the user gets the same service behaviour as he knows it from GSM or GPRS. The services are Cell Broadcast Service 13 and IP Multicast 21. ETSI ETSI TR 125 925 V3.5.0 (2004-12) 7 3GPP TR
34、25.925 version 3.5.0 Release 1999 Combined with the UMTS service classification given in 2 the service classification shown in Figure 1 could be used as a starting point. The figure contains the view in terms of Radio Access Bearer services and should not be applied for higher layers where other cat
35、egories of services may exist. Future work may result in changes of Figure 1. Distribution Services(synonym: Point-to-multipoint Services)IP Multicast (IP-M)Cell Broadcast Service (CBS)Figure 4.1: Structure of point-to-multipoint services Table 4.1 gives an overview of broadcast/multicast services a
36、s recognised on the radio interface. Table 4.1: Radio Interface related attributes of broadcast/multicast services 12 Attributes CBS (SMS-CB) IP-multicast UE modes Idle Connected Logical Channels CTCH CTCH Necessity of separate control channel Yes BCCH Transport Channels FACH Physical Channels Secon
37、dary CCPCH DRX Mode Yes Yes Primary addressing GEO area Subscriber group Secondary addressing - - Present subscribers known No Yes Ciphering No YeReliable delivery No Yes 5 Common Model The Common Traffic Channel (CTCH) 4 is provided by the MAC sublayer for support of broadcast/multicast services. I
38、t is presently assumed that the CTCH can be used for all categories of broadcast/multicast services. For CBS, the CTCH is mapped to a FACH transport channel. The FACH is also a candidate to be used for multicast services in future releases. This possibility will be further investigated in this repor
39、t. 6 Cell Broadcast Service CBS This clause contains the requirements derived from GSM and ANSI-41 specifications of Cell Broadcast Service and the analysis of the impact on the radio interface Uu. The main requirements for Release 99 are: - service continuity (i.e. no degradation of the GSM and ANS
40、I-41 CBS as seen by users); - the restrictions regarding the radio interface which are given in GSM or ANSI-41 does not remain any longer; - the content of this clause should be a basis for future broadcast/multicast service developments; ETSI ETSI TR 125 925 V3.5.0 (2004-12) 8 3GPP TR 25.925 versio
41、n 3.5.0 Release 1999 - minimising the power consumption by use of intelligent scheduling schemes for CB messages. (GSM CB message discontinuous reception (CBS DRX) should become mandatory). The analysis of 3G CB service (3G-CBS) integration is done top-down. It starts with the network and protocol a
42、rchitecture applicable on each interface. In subclause 6.1 the impact of CBS (GSM) on UTRAN functions is described. This subclause provides all information on the network level needed to derive the requirements for the radio interface. In subclause 6.2 the impact of CBS (ANSI-41) on UTRAN functions
43、is described. Subclause 6.3 discusses the requirements on the radio interface. Further special radio requirements are listed in subclauses related to each (sub-)layer of the radio interface. The functions related to the CBC-RNC reference point are not in the scope of RAN WG2. 6.1 CBS (GSM) 6.1.1 Imp
44、act on UTRAN functions 6.1.1.1 Network and Protocol Architecture Figure 6.1 summarises the network and protocol architecture chosen for Release 1999 by S2, T2, R3 and R2. Note that the Cell Broadcast Centre is integrated into the Core Network. It is aimed to define a radio interface protocol archite
45、cture that is independent of the chosen configuration of the CBC-RNC reference point. Node BUE CBCCBS Appl. 1CBS Appl. 1BM-IWFSABP SABPTCPBMCBMC(note 3)(note 2)TCPRRCRLCMACPHYRRCRLCMACPHYIu-BCUu(note6)IP IP(note6)RNC(note 1)(note 5)Figure 6.1: General Protocol Architecture when RNS is connected to U
46、MTS Core Network NOTE 1: S2 has chosen to integrate the CBC into the Core Network NOTE 2: CBS Application protocol is to be defined by TSG T2 NOTE 3: R3 is responsible for specifying SABP (Service area broadcast protocol, 19). ETSI ETSI TR 125 925 V3.5.0 (2004-12) 9 3GPP TR 25.925 version 3.5.0 Rele
47、ase 1999 NOTE 4: This relay function provides IP routing to RNC. NOTE 5: The CBC sends a CB message together with its scheduling information once to an RNC (see 13 and 19). The BM Interworking Function (BM-IWF) distributes CB messages received over Appl. 3 to all BMC instances indicated in the deliv
48、ered cell list. For future releases of UMTS a new function would be necessary if a geographical area is delivered instead of a cell list. NOTE 6: The lower layer on the Iu-BC interface uses AAL5 over ATM (packet transmission). In the following, the data unit delivered from/to the CBS Application 1 p
49、rotocol is denoted as “CB message“. This data unit is described in 13. It comprises the following CB message parameters: Number-of-Pages (1 octet), (CBS-Message-Information-Page 1 (82 octets), CBS-Message Information-Length 1(1 octet) , , (CBS-Message-Information-Page 15 (82 octets), CBS-Message Information-Length 15)(1 octet) This implies a maximum CB message length of 1 + 15 (82+1) = 1246 octets. NOTE 8: In 19, the maximum CB message length of 1246 octets is kept by R3. 6.1.1.2 BM-IWF 6.1.1.
