1、 ETSI TS 122 002 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Circuit Bearer Services (BS) supported by a Public Land Mobile Network (PLMN) (3GPP TS 22.002 version 15.0.0 Release 15) TECHNICAL SPECIFICATION GLOBAL S
2、YSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TS 122 002 V15.0.0 (2018-07)13GPP TS 22.002 version 15.0.0 Release 15Reference RTS/TSGS-0122002vf00 Keywords GSM,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
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9、are trademarks registered and owned by the GSM Association. ETSI ETSI TS 122 002 V15.0.0 (2018-07)23GPP TS 22.002 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
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14、ion (TS) has been produced 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.
15、The cross reference between 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
16、 described in clause 3.2 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 122 002 V15.0.0 (2018-07)33GPP TS 22.002 version 15.0.0 Release 15Contents Intellectual Pr
17、operty Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g30 Scope 5g30.1 References 5g30.2 Abbreviations . 5g31 Framework for defining Circuit Bearer Services . 6g32 Bearer Service categories . 7g33 Bearer Services . 7g33.1 General bearer service user data characteristics . 8g33.1.1 BS
18、 20 (asynchronous services) . 9g33.1.1.1 BS 20 T (transparent asynchronous services) . 9g33.1.1.1.1 BS 20 transparent in regular mode for analogue interworking 9g33.1.1.1.2 BS 20 transparent in regular mode for digital interworking 9g33.1.1.2 BS 20 NT (non-transparent asynchronous services) . 10g33.
19、1.1.2.1 BS 20 non-transparent in regular mode for analogue interworking . 10g33.1.1.2.2 BS 20 non-transparent in regular mode for digital interworking . 10g33.1.1.2.3 BS 20 non-transparent for PIAFS 11g33.1.1.2.4 BS 20 non-transparent for Frame Tunnelling Mode 11g33.1.2 BS 30 (synchronous services)
20、. 11g33.1.2.1 BS 30 T (transparent synchronous services) . 11g33.1.2.1.1 BS 30 transparent in regular mode for analogue interworking 11g33.1.2.1.2 BS 30 transparent in regular mode for digital interworking 12g33.1.2.1.3 BS 30 transparent for Multimedia . 12g3Annex A (informative): Change history . 1
21、3g3History 14g3ETSI ETSI TS 122 002 V15.0.0 (2018-07)43GPP TS 22.002 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3GPP. The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should t
22、he TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater ind
23、icates 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 incorporated in the document. ETSI ETSI TS 122 002 V15.0.0
24、 (2018-07)53GPP TS 22.002 version 15.0.0 Release 150 Scope The present document defines a set of Circuit Bearer Services to be provided to PLMN subscribers by a PLMN itself and in connection with other networks. This TS should also be used as a reference for defining the corresponding required mobil
25、e network capabilities. 0.1 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 spec
26、ific 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
27、document. 1 TS 41.004: “Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms“. 2 TS 22.001: “ Principles of circuit telecommunication services supported by a GSM Public Land Mobile Network (PLMN)“. 3 TS 22.004: “ General on supplementary services“. 4 TS 27.001: “ General
28、 on Terminal Adaptation Functions (TAF) for Mobile Stations (MS)“. 5 TS 27.002: “ Terminal Adaptation Functions (TAF) for services using asynchronous bearer capabilities“. 6 TS 27.003: “ Terminal Adaptation Functions (TAF) for services using synchronous bearer capabilities“. 7 TS 27.005: “Use of Dat
29、a Terminal Equipment - Data Circuit terminating Equipment (DTE - DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS)“. 8 TS 29.002: “ Mobile Application Part (MAP) specification“. 9 TS 29.007: “General requirements on interworking between the Public Land Mobile Network (P
30、LMN) and the Integrated Services Digital Network (ISDN) or Public Switched Telephone Network (PSTN)“. 10 TS 29.010: “ Information element mapping between Mobile Station - Base Station System and BSS - Mobile-services Switching Centre (MS - BSS - MSC) Signalling procedures and the Mobile Application
31、Part (MAP)“. 11 TS 29.011: “ Signalling interworking for supplementary services“. 12 ITU-T Recommendation V.120: “Support by an ISDN of data terminal equipments with V-series type interface with provision for statistical multiplexing“. 13 TR 21.905: “Vocabulary for 3GPP Specifications“ 0.2 Abbreviat
32、ions Abbreviations used in this TS are listed in TS 41.004 1 and TR 21.905 13. ETSI ETSI TS 122 002 V15.0.0 (2018-07)63GPP TS 22.002 version 15.0.0 Release 151 Framework for defining Circuit Bearer Services Bearer Services are described by attributes, which are intended to be independent. These attr
33、ibutes are described and defined in TS 22.001 2. They are grouped into four categories: i) Information transfer attributes, which characterize the network capabilities for transferring information from a user access point in a PLMN to a user access point in another network. (Refer to TS 22.001 2 ).
34、ii) Access attributes, which describe the means for accessing network functions or facilities as seen at the access point in the PLMN (see TS 22.001 2). iii) Interworking attributes, which describe properties of the terminating network and its access point. The terminating network may include anothe
35、r PLMN or the originating PLMN. iv) General attributes, which deal with the service in general. Figure 1 shows the relation between the groups of attributes and their fields of applicability. Information Transferand AccessAttributes (note 3)Interworking AttributesIWF IWFPLMNTransitNetworkTerminating
36、Network(note 1)General Attributes (note 2)NOTE 1: A transit network may not exist for a Bearer Service. NOTE 2: Communication may be established from either end. NOTE 3: The information transfer and access attributes of a Bearer Service relate to a direct peer-to-peer communication of: - TE to TE; -
37、 TE to a network gateway (supporting, for example, PSTN interworking); or - network gateway to a TE. Figure 1: Relation between the groups of attributes and fields of applicability The following table lists the individual attributes in each of the four groups. The Bearer Service definitions in this
38、specification are based on the “Minimal Set“ of attributes. ETSI ETSI TS 122 002 V15.0.0 (2018-07)73GPP TS 22.002 version 15.0.0 Release 15Table 1: List of Bearer Service attributes Minimal Set Information Transfer Attributes Information Transfer Mode X Information Transfer Rate X Information Transf
39、er Capability X Establishment of Communication X Symmetry X Communication Configuration X Data Compression Access Attributes Access Channel and Rate Signalling Access Protocols Information Access Protocols Information Access Structure X Information Access Rate X Interworking Attributes General Attri
40、butes Supplementary Services Provided Quality of Service X Operational and Commercial Attributes that are not part of the minimal set provide further technical detail and are required to fully define the use of each Bearer Service. See specifications 4, 5, 6, 7 for information about the Signalling A
41、ccess Protocols, Information Access Protocols and related access attributes. Supplementary services are defined in TS 22.004 3. Intercommunication is required with services in the PSTN, ISDN and other PLMNs. The capabilities that describe the Interworking Attributes are described in specifications 8
42、 to 9 and 15. 2 Bearer Service categories All Bearer Service categories provide information transfer between the reference points and allow the use of sub-rate information streams which are rate-adapted. The Bearer Services can be grouped into the following categories: - Unrestricted Digital Informa
43、tion (UDI); Provides the transfer of unrestricted digital information. - 3,1 kHz (External to the PLMN); Used to select a “3,1 kHz audio“ interworking function at the MSC. This service category is used when interworking with the ISDN or PSTN “3,1 kHz audio“ service and includes the capability to sel
44、ect a modem at the interworking function. “External to the PLMN“ indicates that the “3,1 kHz audio“ service is only used outside of the PLMN, in the ISDN/PSTN. The connection within the PLMN, user access point to the interworking function, is an unrestricted digital connection. 3 Bearer Services Thi
45、s clause provides a list of the existing Bearer Services and indicates the values for each attribute in the minimal set. The following attributes have the same value for all Bearer Services. Their values are as follows: Information Transfer Mode: “Circuit“; Information Transfer Rate: Not applicable
46、(note 1); ETSI ETSI TS 122 002 V15.0.0 (2018-07)83GPP TS 22.002 version 15.0.0 Release 15Establishment of Communication: “Demand“; Symmetry: “Bi-directional Symmetric“; Communication Configuration: “Point to point“. NOTE 1: The Information Transfer Rate attribute is not applicable because it depends
47、 on the reference point assumed in the PLMN, transit or terminating network. All asynchronous NT Bearer Services may support data compression to enhance user data throughput. NT Bearer Services 20 may support V.120 interworking, enabling data terminals connected to an UE to interwork with V.120 12 t
48、erminal adapters on the ISDN as shown in the figure 2 below. Async/SyncTerminalUE RAN MSC IWFV.120TAR referencepointV.110 V.120PLMNISDNFigure 2: Model of V.120 Interworking Table 2 contains the list of the Bearer Services and the values for the remaining attributes in the minimal set. Table 2 Bearer
49、 Service Number Bearer Service Name Access Structure Access Rate Information Transfer Capability QOS Attribute Notes 20 Asynchronous General Bearer Service Asynch note 1 3.1 kHz , UDI, RDI NT / T 30 Synchronous General Bearer Service Synch note 1 3.1 kHz , UDI, RDI T Note 1: This General Bearer is independent of any nominal rate. It is elaborated in more detail in subclause 3.1 3.1 General bearer service user data characteristics The tables below describe the characteristics of the General Bearer Services. The indicat
