1、STD-EIA TSBbS-ENGL 1778 m 3234bOO ObL4012 127 m TIA/EIA TELECOMMUNICATIONS SYSTEMS BULLETIN A System and Standards Definition for a Digital Land Mobile Radio System TSB69 NOVEMBER 1998 TELECOMMUNICATIONS INDUSTRY ASSOCIATION STDaEIA TSBbS-ENGL 1778 m 3234bU0 ObL40L3 Ob3 D NOTICE WEIA Engineering Sta
2、ndards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for
3、his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonmember of WEIA from manufacturing or sebg products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their volunta
4、ry use by those other than WEIA members, whether the standard is to be used either domestically or internationally. Standards, Publications and Bulletins are adopted by EA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TINEIA does not assume any li
5、ability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard, Publication, or Bulletin. Technical Bulletins are distinguished from TIA/EA Standards or interim Standards, in that they contain a compilation of engineering data or information useful to the te
6、chnical community, and represent approaches to good engineering practices that are suggested by the formulating committee. This Bulletin is not intended to preclude or discourage other approaches that similarly represent good engineering practice, or that may be acceptable to, or have been accepted
7、by, appropriate bodies. Parties who wish to bring other approaches to the attention of the formulating committee to be considered for inclusion in future revisions of this Bulletin are encouraged to do so. It is the intention of the fomuating committee to revise and update this Bulletin from time to
8、 time as may be occasioned by changes in technology, industry practice, or government regulations, or for other appropriate reasons. (From Project No. 3594, formulated under the cognizance of the TIA TR-8.16 EDACS Subcommittee). Published by OTELECOMMUNICATIONS INDUSTRY ASSOCIATON 1998 Standards and
9、 Technology Department 2500 Wilson Boulevard Arlington, VA 22201 PRICE Please refer to the current Catalog of EU, JEDEC and TIA STANDARDS and ENG“G PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-8547179) International (303-397-7956) AU rights reserved Printed in U.S.A. STDO
10、EIA TSBbS-ENGL 1778 m 323Lib00 Ob/liOLLi TTT m TIAEIAITSB69 Foreword (This foreword is not part of this bulletin) This Enhanced Digital Access Communications System (EDACSa) and Standards Definition describes the functional elements of the EDACS System, as well as defining the basic system architect
11、ure. This document provides the basic expectations of Enhanced Digital Access Communications Systems, and outlines the organization of the family of documents. This bulletin also serves as a foundation for the coherent development of the remaining documents within the Enhanced Digital Access Communi
12、cations System family of documents. This document has been developed with inputs from the EDACS Task Group (TG- 8.16), TIA Industry Members, and the International EDACS Users Group. As a group, the family of Enhanced Digital Access Communications Systems documents describe the system, inclusive of t
13、he equipment requirements which allow both compatibility and interoperability between various systems and elements. The family of documents will be backward compatible and interoperable with existing installed Enhanced Digital Access Communications Systems as further defined within this bulletin. Th
14、is bulletin is not a TIA standard. It is being published because it is felt that there is a need for technical information on digital techniques for Land Mobile Radio Service. EDACSB is a registered trademark of Ericsson STD.EIA TSBbS-ENGL 1798 D 3234b00 Ob14015 93b TINEIAITSB69 1. INTRODUCTION 1 1.
15、1 Revision History 1 1.2 References 1 1.3 Scope 2 1 -3.1 Scope of the System and Standards Defuition 2 1.3.2 Scope of the Family of Documents 2 1.4 Definitions 3 2. ORGANIZATION OF THE FAMILY OF documents 4 2.1 Document Designation 4 2.2 Document Descriptions 4 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 XX
16、X69.1 - Enhanced Digital Access Communications System Gateway Specifications 5 XXX69.1-1 - Enhanced Digital Access Communications System Console interface Specification- 5 XXX69.2 - Enhanced Digital Access Communications System AME Vocoder and Encryption Definition 5 TSB69.3 - Enhanced Digital Acces
17、s Communications System Digital Signaling Specification- 5 XXX69.3-1 - Enhanced Digital Access Communications System Call Procedures 5 XXX69.4 - Enhanced Digitai Access Communications System Conformance Tests and Procedures 5 3. SYSTEM MODEL 4 3.1 System Interfaces 6 3.1.1 Digital Air Interface 6 3.
18、1.2 Mobile Data Tenninal Intdace 6 3.1.3 Console interface 6 3.1.4 Network Management Interface 7 3.1.5 Telephone Interconnect interface 7 3.1.6 Data Interface 8 3.1.7 Intersystem Interface 8 3.2 Functional Groups 8 3.2.1 Mobile and Portable Radios 8 3.2.2 Mobile Data Terminal 8 3.2.3 System Control
19、ler 8 3.3 System End Points 9 3.3.1 End Point B 9 3.3.2 End Point C 9 3.4 Communication Modes 9 3.4.1 Digital Data 9 3.5 System Components 10 3.6 Modes of Operation 10 3.7 Digital Voice Technology 11 3.7.1 Securiy 11 3.7.2 Forward Error Detection 14 3.7.3 Full Backward Compatibility 14 3.7.4 Digital
20、 Voice Implementation 14 4. TECHNICAL DEFINITION 16 i STD-EIA TSBbS-ENGL 1798 = 3234b00 Obl140Lb A72 = TINEIMSB69 4.1 Scope 16 4.2 Call Sequence 16 4.3 System Addressing 16 4.4 Call Definition 16 4.5 Services / Features Provided 17 4.5.1 Bearer Services 17 4.5.2 Teleservices 18 4.5.4 Features 29 4.5
21、.5 System Types 30 4.6 Performance 33 4.5.3 Supplementary Services 19 4.6.1 4.6.2 4.6.3 4.6.4 4.6.5 4.6.6 4.6.7 4.6.8 4.6.9 4.6.10 4.6.1 1 4.6.12 4.6.13 4.6.14 4.6.15 System Characteristics 33 Channel Utilization 33 PSTN Interconnection 34 Range 34 Resilience 34 Encrypted Voice 35 Compatibility 35 V
22、oice Quality 35 Channel Access Time 35 Call Delays 35 Gross Bit Rate 35 Control Channel Loading 36 Registration Times 36 Number Ranges 36 Battery Performance 36 4.7 Mobile Data 36 4.7.1 Open Systems Philosophy 37 4.7.2 Mobile Data Configurations 37 4.8.2 Roaming Conditions 39 4.8.3 Roaming Services
23、40 4.9 Network Management Services 41 4.9.1 Network Management Interface 42 4.9.2 Call Statistics Services 42 4.9.3 Traffic Recording Services 42 5. APPENDIXA: GLOSSARY 43 6. APPENDLX B - SYSTEM ADDRESS SCHEME 51 6.1 Public Service 51 6.2 Electric Utility 52 6.3 Fleet Mapping 52 7. APPENDIX C - CALL
24、 SEQUENCES 54 7.1 Request 54 II STD-EIA TSBbS-ENGL 1998 323tIb00 ObLqOL7 709 TINEIAITSB69 7.2 Assignment 56 7.3 Transmit and Receive 57 7.4 Call Termination 59 iii STD-EIA TSBbS-ENGL LS9 m 3234b00 ObL40L b45 m TIAIEIATSB69 FIGURE LIST FIGURE 1 . DOCUMENT ORGANIZATION 4 FIGURE 2 . GENERAL SYSTEM MODE
25、L 7 FIGURE 3 . DIGITAL CODING PROCESS 15 FIGURE 4 . INTEGRATED VOICE AND DATA ON A TRUNKED SYSTEM 32 FIGURE 5 . DATA NETWORK IN TERMS OF THE os1 MODEL . 37 FIGURE 6 . PUBLIC SERVICE 51 FIGURE 7 . ELECTRIC UTILITY . 52 FIGURE 8 . REQUEST PIT 55 FIGURE 9 . REQUEST To TALK 56 FIGURE 10 . ASSIGNMENT . 5
26、7 FIGURE 12 . CALL PROCESS - CHANNEL ASSIGNM ENT 59 FIGURE 13 . CALL TERMINATION 60 FIGURE 11 . TRANSMIT AND RECEIVE . 58 TABLE LIST TABLE 1 . COMMUNICATION MODES AND CALL TYPES 17 TABLE 2 . SUPPLEMENTARY SERVICES 20 iv STD-EIA TSBbS-ENGL 1798 m 3234b00 Ob14017 58L m PATENT ADVISORY Note: The users
27、attention is called to the possibility that compliance with this standard may require the use of one or more inventions covered by patent rights. Users of this standard are cautioned that the following patents which are not presently available for licensing under terms which are reasonable and demon
28、strably free from unfair discrimination, have been asserted as essential to the manufacture or use of equipment conforming to this standard. Motorola Inc. Patent Nos. US 4,698,805; US 4,716,407; US 5,239,678; US 4,882, 751; US 5,014, 345 By publication of this standard, no position is taken with res
29、pect to the validity of those claims or of any patent rights in connection therewith. TIA shall not be responsible for identifying patents for which licenses may be required by this standard or for conducting inquiries into the legal validity or scope of those patents that are brought to its attenti
30、on. V STD-EIA TSBbS-ENGL 1798 3234b00 ObLLi020 2T3 W TIAEIAiSB69 I. INTRODUCTION 1.1 Revision History 1.2 References DESCRIPTION Enhanced Digital Access Communications System Gateway Specification Enhanced Digital Access Communications System Console Interface Specification Enhanced Digital Access C
31、ommunications System AME Vocoder and Encryption Definition Enhanced Digital Access Communications System Digital Signaling Specification Enhanced Digital Access Communications System Call Procedures Enhanced Digital Access Communications System Conformance Tests 0 Cryptographic synchronization when
32、using encryption; 0 System update; 0 Priority Scan information; and 0 Talkgroup segmentation. 14 STD-EIA TSBbS-ENGL 1998 W 3234bUU Ob14034 878 W TINEI/WSB69 4. TECHNICAL DEFINITION 4.1 Scope This section is a Technical Requirements Specification (TRS) for the Er, ianced Digital Access Communications
33、 System . It provides a basis for system design and can be used as the criteria in judging alternate system designs. It gives an explanation of the services provided, including security and data services. 4.2 Call Sequence When mobile and portable radios are tumed on, they scan for the control chann
34、el repeater covering their area. The control channel continuously transmits a digital control signal, at 9600 bps NRZ, direct FM. Mobiles and portables receive and decode this outbound control channel signaling and synchronize to the control channel. Once synchronized to the control channel, mobiles
35、 and portables are synchronized to the system for inbound signaling. A detailed description of the control channel signaling procedures is provided in XXX69.3-1, Call Procedures. Simplified exchanges between the radio unit and the system are described and shown in the diagrams in APPENDIX C - CALL S
36、EQUENCES. 4.3 System Addressing The system address scheme allows partitioning of radio units into groups so that users with like communication requirements can communicate with each other. In addition, the system address scheme allows each radio or console to be assigned its own ID so that radios or
37、 consoles can be identified and selectively called. The address hierarchy, described in Appendix B, spans five categories, from broad to narrow. Appendix B also includes a detailed description of fleet mapping and its purpose. 4.4 Call Definition When a call is placed on the system, it consists of t
38、wo parts: the communication mode and the call type. The system supports three communication modes and four call types. 15 STD-EIA TSBbS-ENGL 1798 = 323LIb00 Ob14035 724 TIAEIAlTSB69 Digital Voice CALL TYPE Group Group Emergency Individual System All Call Digital Data Analog (Mutual Aid) MODE X X - T
39、able 1. Communication Modes and Call Types To clearly define a call, one must specify both the communication mode and the call type. For example: 0 Digital voice, group call, or 0 Digital data, individual call. 4.5 Services / Features Provided The following sections describe the available services a
40、nd functions. 4.5.1 Bearer Services Bearer Services are telecommunications services that carry user information between separate points within a network. These services are usually limited to the first, second, and third layers of the OS1 model in functionality. 4.5.1.1 Confirmed Packet Delivery Con
41、firmed Packet Delivery is an optional service that offers a two-way delivery of confirmed packets between access points within a radio network. The service provides a variable information transfer rate. Channel sharing maximizes the usage of network resources for short burst information transfer. Th
42、e network provides error correction and detection services and delivery confirmation is also provided. This service is accessible at reference point C and interface Ed. 16 STD-EIA TSBbS-ENGL LSS8 W 323Lib00 ObL403b bbO TIAEIAlTSB69 4.5.2 Teleservices Teleservices provide facilities for user informat
43、ion transport, and typically possess functionality which spans all levels of the OS1 model. Teleservices may be based on a named bearer service, but may require the ability for unique bearer services. 4.5.2. I Call Types There are four mandatory call types, Group, Emergency Group, Individual and Sys
44、tem All Call. These are defined below. 4.5.2.1.1 Group Call The group call is the most common type of call on a trunked system. A group call can be a subfleet, fleet or agency call depending on the Group ID. Group calls may operate in one of three different modes: aigital voice, digital data, or ana
45、log mutual aid. They are often referred to as “talkgroups.“ This service is accessible at reference points B and C for voice calls and C and interface Ed for data calls. 4.5.2.1.2 Emergency Group Call An emergency call is initiated by pressing the emergency button on the radio. Once initiated, the r
46、adio immediately transmits the emergency call request on the inbound control channel. The system receives the request and assigns the emergency call to a free channel. If all channels are busy, the request is placed at the top of the queue, where it will be assigned the first available channel. Even
47、 on heavily loaded systems, emergency calls are handled quickly and efficiently. During typical system operation, group calls are transmission trunked, while emergency group calls are message trunked. Transmission trunking means that a working channel is assigned for the duration of a callers transm
48、ission. Upon the callers un-key, the system immediately de-allocates the channel and makes it available for reassignment. This is equivalent to zero-second hang time. Transmission trunking for normal traffic increases system efficiency (reference section 4.5.5.1). Message trunking, on the other hand
49、, means a channel is assigned for the duration of the conversation, or emergency (ref e rence sect ion 4 5.5.2). Only the dispatcher or a radio with supervisory status can clear the group from emergency status. This service is accessible at reference points B and C. 17 STD.EIA TSBbS-ENGL 1798 3234b00 Ob14037 517 m TINEINTSB69 4.5.2.1.3 Individual Call Since each radio has a unique individual ID address, it is possible to individually call any single radio in the system. Individual call allows a one-on-one conversation that is not overheard by anyone else on the system.
