1、 TIA/EIASTANDARDMC-BS Interface for PublicWireless Communications SystemsTIA/EIA-634-BAPRIL 1999TELECOMMUNICATIONS INDUSTRY ASSOCIATIONRepresenting the telecommunications industry inassociation with the Electronic Industries Alliance ANSI/TIA/EIA-634-B-1999Approved: March 18, 1999TIA/EIA-634-BNOTICE
2、TIA/EIA Engineering Standards and Publications are designed to serve the public interest througheliminating misunderstandings between manufacturers and purchasers, facilitatinginterchangeability and improvement of products, and assisting the purchaser in selecting andobtaining with minimum delay the
3、 proper product for his particular need. Existence of suchStandards and Publications shall not in any respect preclude any member or nonmember ofTIA/EIA from manufacturing or selling products not conforming to such Standards andPublications, nor shall the existence of such Standards and Publications
4、 preclude their voluntaryuse by those other than TIA/EIA members, whether the standard is to be used either domesticallyor internationally.Standards and Publications are adopted by TIA/EIA in accordance with the American NationalStandards Institute (ANSI) patent policy. By such action, TIA/EIA does
5、not assume any liabilityto any patent owner, nor does it assume any obligation whatever to parties adopting the Standardor Publication.This Standard does not purport to address all safety problems associated with its use or allapplicable regulatory requirements. It is the responsibility of the user
6、of this Standard to establishappropriate safety and health practices and to determine the applicability of regulatory limitationsbefore its use.(From Standards Proposal No. 4277, formulated under the cognizance of the TIA TR-45.4 Subcommittee on Radio to Switching Technology).Published byTELECOMMUNI
7、CATIONS INDUSTRY ASSOCIATION 1999Standards and Technology Department2500 Wilson BoulevardArlington, VA 22201PRICE: Please refer to current Catalog ofEIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS and ENGINEERINGPUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-854-7179) Internat
8、ional (303-397-7956)All rights reservedPrinted in U.S.A.PLEASE!DONT VIOLATETHELAW!This document is copyrighted by the TIA and may not be reproduced withoutpermission.Organizations may obtain permission to reproduce a limited number of copiesthrough entering into a license agreement. For information,
9、 contact:Global Engineering Documents15 Inverness Way EastEnglewood, CO 80112-5704 or callU.S.A. and Canada 1-800-854-7179, International (303) 397-7956TIA/EIA-634.000-BPage ii12The following Tables of Contents, Tables of Figures, and Tables of Tables3form a merged set taken from4TIA/EIA-634.000B, T
10、IA/EIA-634.100B, TIA/EIA-634.200B,5TIA/EIA-634.300B, TIA/EIA-634.400B, and TIA/EIA-634.500B.67TIA/EIA-634.000B Contents89REVISION HISTORY .III10COPYRIGHT INFORMATION . IV111. FUNCTIONAL OVERVIEW .1121.1 PURPOSE.1131.2 SCOPE.1141.3 ORGANIZATION.3151.3.1 Architectures Supported 3161.3.1.1 Architecture
11、 A.3171.3.1.2 Architecture B.3181.3.2 Support for Architecture Interoperability3191.3.3 TIA/EIA-634 Parts.4201.4 DOCUMENTATION CONVENTIONS.6211.4.1 Procedural Descriptions7221.5 REFERENCES.8231.5.1 Telecommunications Industry Association (TIA) / Electronics Industry Association (EIA) .8241.5.2 Stand
12、ards Committee T19251.5.3 International Telecommunications Union - Telecommunications Sector (ITU-T).10261.5.4 Other10271.6 TERMINOLOGY.11281.6.1 Acronyms .11291.6.2 Definitions14301.7 MSC - BS INTERFACE MODEL.17311.7.1 Network Reference Model17321.7.1.1 Reference Points A and Ater18331.7.2 MSC-BS I
13、nterface Reference Model 18341.7.2.1 Reference Model for Digital Air Interfaces - Direct BS-to-BS Interconnection.19351.7.2.2 Reference Model for Digital Air Interfaces - Sub-rate Circuit (A6) Based.19361.7.3 Functional Partitioning .19371.7.4 MSC - BS Information Flow 20381.7.5 MSC - BS Protocol Re
14、ference Model.20391.7.5.1 MSC-BS interface Channel Types20401.7.5.2 Transport Protocols.21411.7.5.3 Layer 3 - A1 Interface: Base Station Application Part224243TIA/EIA-634.000-BPage iiiRevision History12Revision Publication DateCompatibleVersions of OtherParts ofTIA/EIA-634RemarksIS-634-0 December 19
15、95 Not Applicable Initial publication.TSB80 June 1996 Not Applicable Interim modifications to theinitial publication.IS-634.000A June 1998 IS-634.100AIS-634.200AIS-634.300AIS-634.400AIS-634.500AAddition of support forpacket transport, direct BS toBS signaling, Over The AirService Provisioning, Servi
16、ceNegotiation, Data calls, andother features.TIA/EIA-634.000B December 1998 TIA/EIA-634.100BTIA/EIA-634.200BTIA/EIA-634.300BTIA/EIA-634.400BTIA/EIA-634.500BANSI publication of IS-634-A.3TIA/EIA-634.000-BPage ivCopyright Information1This standard contains significant portions of material copied from
17、ETSI GSM 04.082(Phase 1) and ETSI GSM 08.08 (Phase 1) which has been modified to comply with the3domestic specifications of the U.S.A. The specific modifications are in the following4areas:5 Many of the messages, information elements, and timers contained in GSM604.08 (Phase 1) and GSM 08.08 (Phase
18、1) have been copied and adapted.7 The message procedural descriptions can be found in Parts 100, 200, and 3008of this standard in sections 2, 3, 4, and 5 of those Parts. These message9procedural descriptions have been copied and adapted.10 The message definitions can be found in section 6.1, which i
19、s wholly11contained in Part 400 of this standard. These message definitions have been12copied and adapted.13 The information element definitions can be found in section 6.2, which is14wholly contained in Part 400 of this standard. These information element15definitions have been copied and adapted.1
20、6 The timer definitions can be found in section 6.3, which is wholly contained in17Part 400 of this standard. These timer definitions have been copied and18adapted.19The copyrights on these ETSI documents are owned by the European20Telecommunications Standards Institute (ETSI), which has granted a l
21、icense for21reproduction for use by TIA and its Engineering Committees and Subcommittees. Any22copies of the above mentioned ETSI documents required for other purposes should be23purchased directly from ETSI or other organizations with a sales agreement covering24ETSI publications.25TIA/EIA-634.000-
22、BPage11. Functional Overview1This standard describes the overall system functions, including services and features2required for interfacing a Base Station (BS) with the Mobile Switching Center (MSC).3This standard provides an understanding of the MSC-BS interface. Establishing a4standard MSC-BS Inte
23、rface allows the BS and MSC equipment to evolve5independently and to be provided by multiple vendors.61.1 Purpose7The purpose is to provide the standard for the interfacing of an MSC with one or more8BSs. This document defines the functional capabilities, including services and features,9of the MSC-
24、BS Interface. These services and features are the defining characteristics10that are the basis for the overall system standard for the MSC-BS Interface.11The MSC-BS Interface is defined as the interface that provides telecommunications12services access between a Base Station and a Mobile Switching C
25、enter. It specifically13represents the demarcation point between the BS and the MSC which coincides with14the Reference Point “A“ as depicted in the Telecommunications Industry Association15(TIA) TR45 Network Reference Model (NRM), see Figure 1-3. This point establishes16the technical interface and
26、designates the test points and operational division of17responsibility between the BS and the MSC.18This MSC-BS Interface standard document fulfills the following criteria:191. supports future MSC and BS implementations;202. supports current and future air interfaces;213. makes maximum use of existi
27、ng standards from the22Telecommunications Industry Association (TIA) and other sources;234. promotes reliability enhancement, technical innovation, network24product availability, and economic competition;255. allows connection of various manufacturers BSs to the same MSC;266. allows the separate evo
28、lution of MSC and BS technology.271.2 Scope28This standard provides the specification for the MSC-BS Interface which coincides29with the Reference Point “A“ defined in the TR45 Network Reference Model shown in30Figure 1-3.31TIA/EIA-634.000-BPage 2The scope of this standard includes the following top
29、ics:1 the MSC-BS Interface based on the TIA TR45 Network Reference2Model;3 the descriptions of the specified functional capabilities that provide4wireless telecommunications services across the MSC-BS Interface5as defined in the TR45 Network Reference Model;6 the descriptions of the division of resp
30、onsibility of the functions7provided between the BS and the MSC without prescribing specific8implementations;9 the descriptions of the MSC-BS Interface standards that support the10functional capabilities of the following air interface signaling11protocols:121. ANSI/EIA/TIA-553132. TIA/EIA 627143. TI
31、A/EIA IS-136-A154. TIA/EIA IS-91165. TIA/EIA IS-95-A176. ANSI J-STD-008187. ANSI J-STD-011198. TIA/EIA IS-99209. TIA/EIA IS-6372110. TIA/EIA TSB7422The MSC-BS interface is capable of supporting all the services offered to mobile23subscribers operating under the above North American Wireless standard
32、s with the24exception of IS-136-A. In this case, only basic support for a digital control channel and25the enhanced full rate vocoder is provided. Additional support may be provided in a26future revision.27The MSC to BS interface is specified by a set of characteristics, including:28 Physical and el
33、ectromagnetic parameters.29 Channel structures.30 Message types and contents.31 Network operating procedures.32TIA/EIA-634.000-BPage31.3 Organization1This standard is titled:2“MSC-BS Interface for Public Wireless Communications Systems“3This standard describes the protocol necessary to provide to wi
34、reless radio telephone4subscribers certain services requiring interaction between the Mobile Switching Center5(MSC) and the Base Station (BS).6It is the intention of the TIA/EIA TR-45.4 Subcommittee that this standard addresses7the ongoing and developing concerns of the North American wireless radio
35、-8telecommunications industry (subscribers, service providers, and manufacturers alike)9with regard to useful and effective services requiring standardized procedures.101.3.1 Architectures Supported11There are two architectures supported in this standard for network infrastructure12support of digita
36、l air interfaces. They are referred to as “Architecture A” and13“Architecture B.”141.3.1.1 Architecture A15Architecture A is distinguished by the fact that the voice coding and frame selection16function (SDU) is always located at the source base station. Procedures unique to17Architecture A can be f
37、ound in TIA/EIA-634.200 (see below).181.3.1.2 Architecture B19Architecture B is distinguished by the fact that the voice coding and frame selection20function (SDU) is remote from the source base station, thus requiring the use of the A421interface. Procedures unique to Architecture B can be found in
38、 TIA/EIA-634.300 (see22below).231.3.2 Support for Architecture Interoperability24See TIA/EIA-634.500 for a description of support for interoperability between25architectures.26TIA/EIA-634.000-BPage 41.3.3 TIA/EIA-634 Parts1This standard is organized into a base Part TIA/EIA-634.000, and five subordi
39、nate Parts2referred to as TIA/EIA-634.100, TIA/EIA-634.200, TIA/EIA-634.300, TIA/EIA-634.4003and TIA/EIA-634.500 with the contents as indicated:4TIA/EIA-634.000 contains all global references, definitions, and5terminology, as well as purpose, scope, organization6and conventions.7TIA/EIA-634.100 cont
40、ains the protocol common to all architectures8supported by this standard.9TIA/EIA-634.200 contains the protocol descriptions that are unique to10digital air interfaces when the SDU function is located11at the source base station, i.e., architecture A.12TIA/EIA-634.300 contains the protocol descripti
41、ons that are unique to13digital air interfaces when the SDU function is remote14from the source base station, i.e., architecture B.15TIA/EIA-634.400 contains the message and element layouts and timer16definitions for all Parts of this standard.17TIA/EIA-634.500 contains a description of interoperabi
42、lity between the18two architectures supported by this standard.19A single numbering scheme has been applied to the base Part (TIA/EIA-634.000) and to20all subordinate Parts. TIA/EIA-634.100 contains sections numbered 2 through 5.21Where TIA/EIA-634.200 and TIA/EIA-634.300 contain versions of subsect
43、ions related22to their specific architectures, the base Part and TIA/EIA-634.100 will contain an23indication that those subsections can be found in the other Parts. The numbering24scheme has been kept consistent throughout the base Part (TIA/EIA-634.000) and25TIA/EIA-634.100, TIA/EIA-634.200, and TI
44、A/EIA-634.300. TIA/EIA-634.400 contains26section 6 of this standard. That is, TIA/EIA-634.400, when used in conjunction with the27base Part, TIA/EIA-634.100, TIA/EIA-634.200, and TIA/EIA-634.300, maintains a28consistent numbering scheme within this standard. TIA/EIA-634.500 contains section 729of th
45、is standard. Figure 1-1 below shows the relationships between these Parts.30TIA/EIA-634.000-BPage51TIA/EIA-634.000Base PartTIA/EIA-634.100Common ProtocolTIA/EIA-634.500InteroperabilityBetweenArchitecturesA and BTIA/EIA-634.400Messages,Elements andTimersTIA/EIA-634.300Protocol Unique toDigital Air In
46、terfaceswith the SDU FunctionRemote from the SourceBase Station(Architecture B)TIA/EIA-634.200Protocol Unique toDigital Air Interfaceswith theSDU Function at theSource Base Station(Architecture A)23Figure 1- 1 - Relationship of the Parts of the TIA/EIA-634 Standard4Within TIA/EIA-634.400 the reader
47、will find a table that indicates the applicability of5various messages based on the architecture and air interface in use. This table may be6useful to manufacturers and operators in determining what portions of this standard are7needed for implementation of a given network.8Also in TIA/EIA-634.400 t
48、he reader will note that the message layout tables indicate the9applicability of elements to architectures and air interfaces. For the convenience of the10reader, a cross reference between elements and the messages in which they are used can11be found in TIA/EIA-634.400 section 6.2.1.6.12TIA/EIA-634
49、.000-BPage 61.4 Documentation Conventions1The scenarios and examples in this standard are not meant to be exhaustive, but2are only used to help explain some of the important procedures of the protocol.3The diagram below is provided as an example of the conventions used in this standard.4Several points within the diagram are worthy of note. The circled numbers in the5following figure correspond to the numbered items below.61. Horizontal dotted lines are used
