TIA TSB-102 BAJA-B-2017 Project 25 Location Services Overview.pdf

1、 TSB-102.BAJA-B November 2017Project 25 Location Services Overview NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and

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19、POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TSB-102.BAJA-B i Foreword (This foreword is not part of this document.) This document has been created

20、 in response to a request by the Project 25 Steering Committee as provided for in a Memorandum of Understanding (MOU) dated April 1992 and amended December 1993. The MOU states that the Project 25 Steering Committee shall devise a Common System Standard for digital public safety communications (the

21、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 development of documentation for the Standard. If the abbreviation “P25” or the wording “Project 25” appears on the

22、 cover sheet of this document when published that indicates the Project 25 Steering Committee has adopted this document as part of the Standard. The appearance of the abbreviation “P25” or the wording “Project 25” on the cover sheet of this document or in the title of any document referenced herein

23、should not be interpreted as limiting the applicability of the information contained in any document to “P25” or “Project 25” implementations exclusively. This document was developed by the TIA TR-8.5 Signaling and Data Transmission Subcommittee and provides an overview of TIA-102 Location Services.

24、 The 3rdedition (Revision B) updated the 2ndedition (Revision A) to address errata comments. This document cancels and replaces TSB-102.BAJA-A. There are no annexes in this document. TIA does not evaluate, test, verify or investigate the information, accuracy, soundness, or credibility of the conten

25、ts of the Document. In Publishing the Document, TIA disclaims any undertaking to perform any duty owed to or for anyone. Some aspects of the specifications contained in this document may not have been fully operationally tested; however, a great deal of time and good faith effort has been invested i

26、n the preparation of this document to ensure the accuracy of the information it contains. TSB-102.BAJA-B 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 publicati

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28、nd conditions 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 r

29、equired by this document or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. TSB-102.BAJA-B iii Table of Contents 1. Introduction . 1 1.1 Scope . 1 1.2 References . 2 1.3 Acronyms and Abbreviations 2 1.4 Definitions . 2 2. Location Service

30、s Summary 3 2.1 Tier 1 Location Service . 3 2.2 Tier 2 Location Service . 3 3. Location Service Document Suite . 4 4. Location Services System Architecture . 5 4.1 Architectural Entities . 5 4.1.1 Location Information System (LIS) . 6 4.1.2 Location Service Host System (LSHS) . 6 4.1.3 Fixed Data Ho

31、st (FDH) . 6 4.1.4 Mobile Data Peripheral (MDP) 7 4.1.5 LMR System . 7 4.1.5.1 SU 7 4.1.5.1.1 Obtaining Location Information . 7 4.1.5.1.2 Triggering Conditions . 8 4.1.5.1.3 Reporting Conditions 8 4.1.5.1.4 Providing Location Information . 8 4.1.5.2 FSR. 8 4.1.5.3 FNE 8 4.2 Architectures 8 4.2.1 Di

32、rect Data Configuration . 9 4.2.2 Conventional SU Repeated to SU 9 4.2.3 Conventional or Trunked FNE Data Configuration . 10 4.2.4 MDP Used for Location Services 10 4.3 Interfaces 11 4.3.1 LIS to SU or MDP . 11 4.3.2 SU to SU, SU to FSR, and SU to FNE 11 4.3.3 SU to LSHS 12 4.3.4 SU to MDP . 12 4.3.

33、5 FNE to FDH 12 4.3.6 FDH to MDP or LSHS . 12 4.4 Location Service Protocols . 12 TSB-102.BAJA-B iv List of Figures Figure 1 Architectural Entities 5 Figure 2 SU to SU Direct Data Configuration . 9 Figure 3 SU to SU Repeated Data Configuration. 9 Figure 4 SU to FDH Conventional or Trunked FNE Data C

34、onfiguration 10 Figure 5 SU to SU Conventional or Trunked FNE Data Configuration . 10 Figure 6 LIS to MDP 10 Figure 7 MDP to LSHS 11 Revision History Version Date Description Original 2/17/2009 Initial release of Location Services Overview Revision A 2/15/2010 Incorporated revisions to reference the

35、 Tier 2 Location Service Specification for the compression method Revision B 11/16/2017 Revision to align with the latest revisions of the Tier 1 and Tier 2 Location Service specifications and to align with the latest TR-8 practices TSB-102.BAJA-B 1 1. Introduction The objective of the Location Serv

36、ices Overview is to describe how TIA-102 series standards and other industry standards are used to provide a location reporting service for land mobile radio (LMR) systems. Knowing the location of subscriber unit and, by implication the user, could be extremely important, especially in situations wh

37、ere the user might be in harms way or lost. Some illustrative examples are: Resource Tracking Monitor locations and movements of the user community Automatic Reporting on the users voice channel: o Transmit location on a timed programmable interval o Transmit location on each PTT Emergency Mode Repo

38、rting Activated when Emergency mode is entered, typically by pressing an “Emergency” button Set to automatically transmit on emergency PTT Repeats whenever the emergency message is sent; no manual PTT required Perimeter and Target (Waypoint) Mapping Walk desired perimeter to map its location: o Set

39、to transmit automatically on a short interval (e.g. 3 seconds) o Set unit identifier to perimeter name Mark designated targets: o Set to transmit automatically on PTT o Set unit identifier to target name o Transmit (could also have someone at base monitoring) Same technique used for Search and Rescu

40、e Missions and Grid Searches The specifications in the TIA-102 Location Services document suite provide a means for subscriber units and infrastructure elements from various manufacturers to interoperate when providing location services. 1.1 Scope This document describes LMR Location Services includ

41、ing a brief summary of the solution (section 2 below), document suite (section 3 below), and its architecture (section 4 below): The document describes a two-tiered approach to providing location services. See section 2 below for a summary of the two tiers. The functional scope of the location servi

42、ce as described herein covers functionality described in 4. Group-oriented Location Services are not supported at this time. TSB-102.BAJA-B 2 1.2 References The appearance of “Project 25” in references below indicates the TIA document has been adopted by the Project 25 Steering Committee as part of

43、its Project 25 standard, i.e. “the Standard.” 1 TIA-102.BAEA-C, Project 25 Data Overview and Specification, ANSI/TIA, December 2015 2 TIA-102.BAJB-A, Project 25 Tier 1 Location Services Specification, ANSI/TIA, November 2014 3 TIA-102.BAJC-A, Project 25 Tier 2 Location Services Specification, ANSI/T

44、IA, April 2015 4 TSB-102-C, Project 25 TIA-102 Documentation Suite Overview, TIA, March 2016 1.3 Acronyms and Abbreviations ANSI American National Standards Institute CAI Common Air Interface COTS Commercial Off-The-Shelf FDH Fixed Data Host FDN Fixed Data Network FNE Fixed Network Equipment FSRFixe

45、d Station Repeater GPS Global Positioning System GPSR GPS Receiver IP Internet Protocol LIS Location Information System LORAN Long Range Navigation LRRP Location Request/Response Protocol LSHS Location Service Host System LMR Land Mobile Radio MDP Mobile Data Peripheral NMEA National Marine Electron

46、ics Association PTT Push-To-Talk SU Subscriber Unit TIA Telecommunications Industry Association UDP User Datagram Protocol XML Extensible Markup Language 1.4 Definitions CAI see definition in 4 FDH see Data Host (DH) definition in 1 FDN see Data Host Network (DHN) definition in 1 FNE see definition

47、in 1 FSRsee definition in 1 SU see definition in 4 TSB-102.BAJA-B 3 2. Location Services Summary LMR Location Services provide a means to supply a Location Service Host System (mapping software for example) with the location of subscriber units moving throughout the coverage area of LMR systems. The

48、re are two tiers of service provided, with varying capabilities. 2.1 Tier 1 Location Service The first tier supports a simple SU to SU interface for the Direct Data or Repeated Data configurations described in 1, without providing IP addressing, fixed host routing, or more advanced configuration of

49、triggering and reporting. This approach is appropriate for real-time field incident applications where the Location Service Host System 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 Bearer Service described in 1 to transport location information formatted as described in NMEA 0183, a commonly used location protocol. 2.2 Tier 2 Location Service The second tier, for t