1、 TIA STANDARD Project 25 Fixed Station Interface Messages and Procedures TIA-102.BAHA June 2006 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance NOTICE OF COPYRIGHT This document is copyrighted by the TIA. Rep
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16、OUT SUCH LIMITATIONS. TIA-102.BAHA i FOREWORD (This foreword is not part of this standard.) This document has been submitted to APCO/NASTD/FED by the Telecommunications Industry Association (TIA), as provided for in a Memorandum of Understanding (MOU) dated December, 1993. That MOU provides that APC
17、O/NASTD/FED will devise a Common System Standard for digital public safety communications (the Standard), and that TIA shall provide technical assistance in the development of documentation for the Standard. This document has been developed by TR8.19 (Wireline Interfaces) with inputs from the APCO P
18、roject 25 Interface Committee (APIC), the APIC Fixed Station Interface Task Group, and TIA Industry members. This document is being published to provide technical information on the emerging digital techniques for Land Mobile Radio Service. This document defines a Conventional Fixed Station Interfac
19、e (CFSI) for Project 25. The CFSI is the interface between a conventional fixed station, which is defined in this document as a functional component of a Fixed Station Subsystem, and a Conventional Fixed Station Host (CFSH). A CFSH is defined in this document as a functional component of either an R
20、F Subsystem (RFSS) or a Console Subsystem.For the purposes of this document the CFSI is defined as a specialization of the generic Project 25 Fixed Station Interface (FSI) described in TSB-102-A. Future related standardization efforts are planned to develop new TIA standards defining protocols for a
21、 Trunked Fixed Station Interface for Project 25. In addition, future associated standardization efforts are planned to develop new TIA standards defining compliance tests (e.g., measurement methods, performance recommendations, and interoperability tests) for the Project 25 Fixed Station Interface p
22、rotocols defined in this and future related standards. TIA-102.BAHA ii PATENT IDENTIFICATION The readers attention is called to the possibility that compliance with this document may require the use of one or more inventions covered by patent rights. By publication of this document, no position is t
23、aken with respect to the validity of those claims or any patent rights in connection therewith. The patent holders so far identified have, we believe, filed statements of willingness to grant licenses under those rights on reasonable and nondiscriminatory terms and conditions to applicants desiring
24、to obtain such licenses. The following patent holders and patents have been identified in accordance with the TIA intellectual property rights policy: No patents have been identified. TIA shall not be responsible for identifying patents for which licenses may be required by this document of for cond
25、ucting inquiries into the legal validity or scope of those patents that are brought to its attention. TIA will neither be a party to discussion of any licensing terms or conditions, which are left to the parties involved, nor will TIA opine or judge whether proposed licensing terms or conditions are
26、 reasonable or non-discriminatory. TRADEMARK IDENTIFICATION The following trademarks are referenced in this specification: IMBE is a trademark of Digital Voice Systems, Inc.* Use of the trademark identified in this standard is not an endorsement by TIA. TIA-102.BAHA iii Contents 1 SCOPE 1 2 DOCUMENT
27、 ORGANIZATION. 3 3 REFERENCES 4 3.1 NORMATIVE REFERENCES4 3.2 INFORMATIVE REFERENCES .4 4 DEFINITIONS 6 5 ABBREVIATIONS AND ACRONYMS 8 6 CFSI ARCHITECTURE . 10 6.1 CORE CFSI FUNCTIONS 10 6.1.1 Conventional Analog Fixed Stations.10 6.1.2 Conventional Digital Fixed Stations10 6.1.3 Mixed Mode Fixed St
28、ations 10 6.2 CFSI SYSTEM ARCHITECTURE AND OVERVIEW .11 6.2.1 Analog Fixed Station Interface12 6.2.2 Digital Fixed Station Interface.12 7 CFSI ANALOG INTERFACE 15 7.1 E Clause 2 identifies the document organization and structure; Clause 3 identifies the normative and informative references; Clause 4
29、 defines key terms; Clause 5 provides a list of acronyms and abbreviations; Clause 6 defines the CFSI architecture; Clause 7 defines the CFSI analog interface; Clause 8 defines the CFSI digital interface. TIA-102.BAHA 4 3 References The following documents contain provisions which, through reference
30、 herein, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards
31、indicated below. ANSI and TIA maintain registers of currently valid national standards maintained by them. 3.1 Normative References 1 RFC 791, Internet Protocol, IETF, September 1981. 2 TIA-603-C, Land Mobile FM or PM Communications Equipment Measurement and Performance Standards, TIA, August 2004.
32、3 GR-506-CORE Issue 1 Rev 1, LSSGR: Signaling for Analog Interfaces, Telcordia, November 1996. 4 TIA/EIA/IS-968, Technical Requirements for Connection of Terminal Equipment To the Telephone Network, Global Engineering Documents, Englewood CO, July 2001. (This is the privatization of FCC Title 47 CFR
33、 Part 68.) 5 RFC 1884, IP Version 6 Addressing Architecture, IETF, December 1995. 6 RFC 768, User Datagram Protocol, IETF, August 1980. 7 RFC 3550, RTP: A Transport Protocol for Real-Time Applications, IETF, July 2003. 8 TIA/EIA-102.BAAA, Project 25 FDMA Common Air Interface, TIA, May 1998. 9 TIA/EI
34、A-102.AABC, Project 25 Trunking Control Channel Messages, TIA, May 2000. 10 TIA-102.AABF-A, Project 25 Link Control Word Formats and Messages, TIA, December 2004. 11 TIA/EIA-102.BABA, Project 25 Vocoder Description, TIA, May 1998. 12 ITU-T Recommendation G.711, Pulse Code Modulation (PCM) Of Voice F
35、requencies, International Telecommunication Union, 1993. 13 RFC 2598, An Expedited Forwarding PHB, IETF, June 1999. 3.2 Informative References 14 TSB102.AABG, APCO Project 25 Conventional Control Messages, TIA, July 1996. 15 RFC 793, Transmission Control Protocol, IETF, September 1981. TIA-102.BAHA
36、5 16 RFC 2475, An Architecture for Differentiated Services, IETF, December 1998. 17 TSB102.BACC, APCO Project 25 Inter-RF Subsystem Interface Overview, TIA, December 2003. 18 RFC 3551, RTP Profile for Audio and Video Conferences with Minimal Control, IETF, July 2003. 19 TSB102-A, APCO Project 25 Sys
37、tem and Standards Definition, TIA, November 1995. 20 TSB102.AABD, Project 25 Trunking Procedures, TIA, October 1997. TIA-102.BAHA 6 4 Definitions Base Station.Equipment within a fixed station subsystem that performs at least the Base Radio functions of power amplifier (PA), RF front-end, modulation
38、and demodulation. It may perform other fixed station subsystem functions also. It is normally connected to a console or RFSS through a Fixed Station Interface. Block Payload The actual data contained in the block. The block data may be voice, control words, low speed data, etc. Block Payload, Type B
39、lock PT .A number which describes the basic payload type as defined by the IETF (when E bit is set to 0) or, it may be a profile specific type (when E bit is set to 1). In this specification, E = 1. Block Type .A block identifier used to indicate what type of data is contained in the block, such as
40、CAI voice, IMBE only, link control word, encryption sync word, etc. CAI (Common Air Interface) A radio to radio signal path defined in terms of access method, modulation scheme, vocoding method, channel data rate, and channel data format. ConsoleA device used by a dispatcher to communicate with radi
41、os in the field. These range from simple devices that resemble telephones to advanced touch screen computer based systems that control multiple transmitters and can patch multiple call groups together. Fixed Data NetworkA network of fixed computer equipment for wide-area data communications. Fixed S
42、tation RF equipment which is generally in a fixed location. It transmits the outbound path of the common air interface and receives the inbound path of the common air interface. It may also transmit or receive conventional FM. A fixed station may include a fixed station interface, and be configured
43、as one or more base stations or repeaters and may include additional functionalities such as voters and distribution functions. TIA-102.BAHA 7 IMBEImproved Multi-Band Excitation. A low data rate Voice codec developed by Digital Voice Systems, Inc. (DVSI) used by P25 systems. Mobile A Subscriber Unit
44、 intended for vehicular operation. Portable .A Subscriber Unit intended for hand-held operation. Repeater Equipment within a fixed station subsystem that performs at least the radio functions of power amplifier (PA), RF front-end, modulation and demodulation. It may include a limited number of funct
45、ions such as NAC detection, CTCSS/DCS detection to enable repeater functions etc. It need not include a connection to a console or RFSS through a Fixed Station interface. RTP Header.The part of the RTP header which includes the following information: version (V), padding (P), extension (X), CSRC cou
46、nt (CC) when inserted by a mixer, marker (M), payload type (PT), sequence number, timestamp, SSRC, and CSRC. Tone Remote Control.A legacy method of controlling fixed station functions using in-band tones over analog bearers. Wildcard.TRC functions that can be used for generic purposes via the termin
47、ating fixed station. Equipment that support Wildcard functions can use these to control additional fixed station functions or to control equipment external to the fixed station for example start and stop of power generators. TIA-102.BAHA 8 5 Abbreviations and Acronyms ACKAcknowledgement AFSI .Analog
48、 Fixed Station Interface ANSI.American National Standards Institute CAI .P25 Common Air Interface CDCSS.Continuous Digital Controlled Squelch System CFM .Conventional FM CFSH .Conventional Fixed Station Host CFSI.Conventional Fixed Station Interface COR .Carrier On Relay CS Connected State CTCSS.Con
49、tinuous Tone Controlled Squelch System DARPA.Defense Advanced Research Projects Agency DFSI.Digital Fixed Station Interface DSCP .Differentiated Services Code Point DUID Digital Unit IDentification DVSI.Digital Voice Systems Inc. E&M .Ear & Mouth Signaling EIA .Electronics Industry Association FDMA.Frequency Division Multiple Access FMFrequency Modulation FS.Fixed Station FSSI .Fixed Station Subsystem Interface FT.Frame Type HLGTHigh-level Guard Tone IANA.Internet Assigned Numbers Authority ICMP Internet C
