1、 TIA-102.BAJB-A (Revision of TIA-102.BAJB) November 2014Project 25 Tier 1 Location Services Specification ANSI/TIA-102.BAJB-A-2014 APPROVED: NOVEMBER 5, 2014 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manu
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23、UCH LIMITATIONS. TIA-102.BAJB-A i Foreword (This foreword is not part of this document.) This document has been created in response to a request by the APCO/NASTD/FED1Project 25 Steering Committee as provided for in a Memorandum of Understanding (MOU) dated April 1992 and amended December 1993. The
24、MOU states APCO/NASTD/FED shall devise a Common System Standard for digital public safety communications (the Standard) commonly referred to as Project 25 or P25, and that TIA, as agreed to by the membership of the appropriate TIA Engineering Committee, will provide technical assistance in the devel
25、opment of documentation for the Standard. If the abbreviation “P25” or the wording “Project 25” appears on the cover sheet of this document when published that indicates the APCO/NASTD/FED Project 25 Steering Committee has adopted this document as part of the Standard. The appearance of the abbrevia
26、tion “P25” or the wording “Project 25” on the cover sheet of this document or in the title of any document referenced herein should not be interpreted as limiting the applicability of the information contained in any document to “P25” or “Project 25” implementations exclusively. This document provid
27、es a specification of the Tier 1 Location Services for TIA-102 Data Services. This document was developed by the TIA TR-8.5 Signaling and Data Transmission Subcommittee based on materials originated by the APCO Project 25 Interface Committee (APIC) Data Task Group (DTG). The 2ndedition (Revision A)
28、of this document defines messages and procedures for Tier 1 Location Services based on material originally published in TIA-102.BAJB and addresses several errata comments. This document cancels and replaces TIA-102.BAJB. The TIA makes no claims as to the applicability of the information contained in
29、 this document for any purpose although it is believed that the information will prove to be invaluable to manufacturers and operators of equipment based on the TIA-102 series of documents. Some aspects of the specifications contained in this document may not have been fully operationally tested; ho
30、wever, a great deal of time and good faith effort has been invested in the preparation of this document to ensure the accuracy of the information it contains. 1APCO/NASTD/FED is an abbreviation for the Association of Public-Safety Communications Officials (APCO), the National Association of State Te
31、chnology Directors (NASTD), and the various agencies of the Federal government (FED). TIA-102.BAJB-A 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 o
32、f this document, no position is taken 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 c
33、onditions to applicants desiring 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 requi
34、red by this document or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. TIA-102.BAJB-A iii Table of Contents 1. Introduction . 1 1.1 Scope . 1 1.2 References . 1 1.2.1 Normative References . 1 1.2.2 Informative References 1 1.3 Acronyms a
35、nd Abbreviations 2 1.4 Definitions . 2 1.5 Conventions . 2 1.5.1 Terminology . 2 1.5.2 Symbols . 2 2. Location Services System Architecture . 3 2.1 Architectural Entities . 3 2.1.1 Location Information System (LIS) . 3 2.1.2 Location Service Host System (LSHS) 3 2.1.3 LMR System 4 2.1.3.1 SU . 4 2.1
36、.3.1.1 Obtaining Location Information . 4 2.1.3.1.2 Triggering Conditions . 4 2.1.3.1.3 Reporting Conditions 4 2.1.3.1.4 Providing Location Information . 5 2.1.3.2 FSR5 2.2 Architectures 5 2.2.1 Direct Data Configuration . 5 2.2.2 Repeated Data Configuration 6 2.3 Interfaces 6 2.3.1 LIS to SU . 6 2.
37、3.2 SU to SU and SU to FSR7 2.3.3 SU to LSHS . 7 3. Location Service Protocols . 8 3.1 Protocol Stacks . 8 3.1.1 Direct Data Configuration . 8 3.1.2 Repeated Data Configuration 8 3.2 Protocol Layers. 8 3.2.1 Um. 8 3.2.2 NMEA 0183 . 9 3.2.2.1 Tier 1 Location Service NMEA 0183 Sentences . 9 3.2.2.2 Op
38、tional Additional Data . 12 3.2.2.3 NMEA 0183 Example Message Sequence . 13 4. Protocol Performance 14 TIA-102.BAJB-A iv List of Figures Figure 1 Architectural Entities . 3 Figure 2 SU to SU Direct Data Configuration . 5 Figure 3 SU to SU Repeated Data Configuration . 6 Figure 4 Direct Data SU to SU
39、 . 8 Figure 5 Repeated Data SU to SU 8 Figure 6 NMEA 0183 Message Sequence 13 List of Tables Table 1 NMEA 0183 Sentences for Tier 1 Location Service 11 Table 2 NMEA 0183 GGA Sentence Minimum Required Fields 12 Table 3 Additional Data . 12 Table 4 Transmission Time For Location Data Packets 14 Table
40、5 Reliability For Update Interval. 14 Table 6 Users At 80% Reliability . 15 TIA-102.BAJB-A v Revision History Version Date Description Original 02/20/2009 Tier 1 Location Service messages and procedures to transport location information between endpoints in the Direct Data and Repeated Data configur
41、ations. Revision A 10/27/2014 This revision addresses errata comments and editorial clean up issues; adopted by the Project 25 Steering Committee October 23rdas part of the Project 25 Standard TIA-102.BAJB-A vi This page intentionally left blank TIA-102.BAJB-A 1 1. Introduction This Tier 1 Location
42、Services specification describes how TIA-102 series standards and other industry standards are used to provide a location reporting service for land mobile radio (LMR) systems. LMR Location Services are divided into two tiers, as described in the Location Services Overview document 6. Tier 2 is defi
43、ned in separate documents in the TIA-102 Location Services document suite. This document specifies Tier 1 Location Services. Tier 1 supports a simple SU-to-SU interface without providing IP addressing, fixed host routing, or more advanced configuration of triggering and reporting. This approach is a
44、ppropriate for real-time field incident applications where the Location Service Host is resident on a portable device. It does not provide a mechanism to provide location information to a host device on a fixed network. The Tier 1 approach utilizes a dedicated Service Access Point on the CAI Data Be
45、arer Service described in 2 to transport location information formatted as described in NMEA 0183 3, a commonly used location protocol. 1.1 Scope This document fully specifies the Tier 1 Location Service. 1.2 References The appearance of “Project 25” in references below indicates the TIA document ha
46、s been adopted by the APCO/NASTD/FED Project 25 Steering Committee as part of its Project 25 standard, i.e. “the Standard.” 1.2.1 Normative References The following documents contain provisions that, through reference in this text, constitute provisions of this document. At the time of publication,
47、the editions indicated were valid. All documents are subject to revision, and parties to agreements based on this document are encouraged to investigate the possibility of applying the most recent editions of the documents indicated below. ANSI and TIA maintain registers of currently valid national
48、standards published by them. 1 TIA-102.BAAC-C, Project 25 Common Air Interface Reserved Values, ANSI/TIA, April 2011 2 TIA-102.BAEA-B, Project 25 Data Overview and Specification, ANSI/TIA, June 2012 3 NEMA 0183, Version 3.01, NMEA (http:/www.nmea.org/pub/0183), January 2002 1.2.2 Informative Referen
49、ces 4 TIA Style Manual, TIA, January 1992 5 TSB-102-B, Project 25 TIA-102 Documentation Suite Overview, TIA, June 2012 TIA-102.BAJB-A 2 6 TSB-102.BAJA-A, Project 25 Location Services Overview, TIA, February 2010 1.3 Acronyms and Abbreviations ACK Acknowledgement ANSI American National Standards Institute APCO Association of Public-Safety Communications Officials CAI Common Air Interface EIA Electronics Industry Association FED Various Agencies of the Federal Government FNE Fixed Network Equipment FSRFixed Station Repeater GPS Global Posi
