1、 TIA-102.CACB-2007 APPROVED: APRIL 12, 2007 REAFFIRMED: JANUARY 29, 2013 TIA-102.CACB April 2007Project 25 Inter RF Subsystem Interface (ISSI) Performance Recommendations for Voice Services NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminatin
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22、 THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-102.CACB ii FOREWORD (This foreword is not part of this TIA standard.) This document has been published by the Telecommunications Industry Association (TIA) in accordance with the terms an
23、d conditions provided for in a Memorandum of Understanding executed by and between the TIA, the Association of Public Safety Communications Officials (APCO), the National Association of State Telecommunications Directors, and the various agencies of the Federal government. The TIA makes no claims as
24、 to the applicability of the information contained in this document for any purpose although it is believed that the information will prove to be invaluable to designers of Inter-Radio Frequency Subsystem Interface (ISSI) compliant equipment. Some aspects of the specifications contained in this docu
25、ment may not have been fully operationally tested; however, 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. This document specifies values for selected performance parameters defined in a companio
26、n TIA standard in the 102-series (Inter-RF Subsystem Interface (ISSI) Measurement Methods for Voice Services). Collectively, these two standards address performance assessment aspects of wide area voice services provided by Project 25 (P25) Radio Frequency Sub-Systems (RFSSs) interconnected with P25
27、-standardized ISSI functional services and protocols defined by TIA-102.BACA (Inter-RF Subsystem Interface Messages and Procedures Definition for Voice Services). Future work is planned to specify recommended performance objectives for P25-standardized wide area functional services and protocols inv
28、olving the ISSI in the following areas: enhancement to the initial set of ISSI performance recommendations specified in this document, console interactions across the ISSI, ISSI support for supplementary data services (e.g., call alert); ISSI support for data services; ISSI support for network manag
29、ement of subscriber units and network elements, which is not considered part of the ISSI; ISSI support of telephone interconnect (including emergency services) by roamers back over their ISSI interconnected Home P25 system; ISSI support for emergency multimedia services; ISSI-related traffic enginee
30、ring, traffic control, resource reservation, and service level agreements; and, interconnection of ISSI lower layers in an interoperable manner. TIA-102.CACB iiiPatent Identification The readers attention is called to the possibility that compliance with this document may require the use of one or m
31、ore inventions covered by patent rights. By publication of 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 thos
32、e rights on reasonable and nondiscriminatory terms and 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 responsibl
33、e for identifying patents for which licenses may be required by this document or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. Trademark Identification No trademarks are used in this document. TIA-102.CACB iv TABLE OF CONTENTS 1 INTRODU
34、CTION 11.1 Scope 11.2 Document organization 12 REFERENCES 22.1 Normative references 22.2 Informative references 23 DOCUMENT REVISION HISTORY 24 ABBREVIATIONS 35 TERMS AND DEFINITIONS 46 IVS PERFORMANCE MODELS 47 IVS PERFORMANCE SPECIFICATIONS 47.1 IVS call set-up delay 57.2 IVS call set-up failure r
35、atio 87.3 IVS message transfer delay 87.4 IVS message loss ratio 10Annex A Performance Specification derivations for IVS-CSD and IVS-MTD Composite Parameters 11TIA-102.CACB 1PROJECT 25 INTER-RF SUBSYSTEM INTERFACE (ISSI) PERFORMANCE RECOMMENDATIONS FOR VOICE SERVICES 1 INTRODUCTION 1.1 Scope This do
36、cument specifies values for performance parameters defined in a companion TIA standard, Project 25 Inter-RF Subsystem Interface (ISSI) Measurement Methods for Voice Services 1. The scope of this document is limited to the specification of performance parameter values in the context of the measuremen
37、t methods standardized by the normative references. The objective and purpose of this document are to specify minimum levels of performance for ISSI voice services (IVS) that are used in providing P25 wide area voice services.1The intended users of this document include P25 voice service providers,
38、equipment manufacturers, and end users. This document may be used (1) by service providers in the planning, development, and assessment of P25 voice services that meet end user performance needs, (2) by equipment manufacturers as performance metrics that will affect equipment design, and (3) by end
39、users in evaluating performance. Note: The scope of these performance recommendations is limited to systems based on terrestrial IP backbone networks. The scope does not include systems that use satellite links within their IP backbone networks. The use of satellite links is left for further study.
40、1.2 Document organization This document is organized into seven main clauses. Clause 1 provides introductory information. Clauses 2, 3, and 4 provide, respectively, the documents normative and informative references, revision history, and list of abbreviations. Clause 5 provides common terms and def
41、initions. Clause 6 defines ISSI performance models used for allocation of ISSI performance responsibilities. Clause 7 specifies values for ISSI performance parameters defined in 1. Annex A provides numerical examples of composite parameter derivations. 1In the context of this document, P25 wide area
42、 voice services are any SU-to-SU or group PTT call types that invoke ISSI functional services and protocols (i.e., when use of more than one RFSS is required for a particular IVS call scenario of interest). The term P25 wide area voice services (or, in the context of this document, similar terms suc
43、h as wide area call) is used to emphasize that a principal role of the ISSI is to increase the geographical coverage area for roaming SUs; however, the ISSI more generally enables the interconnection of multi-vendor RFSSs among and within P25 systems. TIA-102.CACB 2 2 REFERENCES 2.1 Normative refere
44、nces The following documents contain provisions that, through reference in this text, constitute provisions of this document. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this document are encouraged to inves
45、tigate the possibility of applying the most recent editions of the documents indicated below. ANSI and TIA maintain registers of currently valid standards published by them. 1 Inter-RF Subsystem Interface (ISSI) Measurement Methods for Voice Services, PN-3-0256,when approved to be published as TIA-1
46、02.CACA. 2 TIA-102.BACA, Project 25 Inter-RF Subsystem Interface Messages and Procedures Definition for Voice Services, August 2006. 2.2 Informative references The following references provide non-normative information. 3 TIA-102.CAAB-B, Performance Recommendations Project 25 Digital Radio Technolog
47、y C4FM/CQPSK Modulation, July, 2004. 4 PROJECT 25 STATEMENT OF REQUIREMENTS, March 9, 2006 (Supersedes P25 SoR Versions January 17, 2002 and April 3, 2003). 5 ISSI Task Group document 06-017-R1 - ISSI - Performance Recommendations.ppt, September 21, 2006. 6 ISSI Task Group document 06-018-R1 - White
48、paper on ISSI Performance, ISSI Timers, and Interoperability.doc, September 21, 2006. 3 DOCUMENT REVISION HISTORY The following table identifies key document versions associated with the preparation of this document: Version Date Description 01 January 15, 2003 Editors initial preliminary draft subm
49、itted to the ISSI Task Group for review and comment (January 15, 2003; Mesa, AZ). Issue A April 3, 2003 Editors initial baseline draft submitted to the ISSI Task Group for review and comment (April 3, 2003; Lake Buena Vista, FL). Issue B June 12, 2003 Editors revised baseline draft submitted to the ISSI Task Group for review and comment (June 12, 2003; Boulder, CO). TIA-102.CACB 3Issue C August 7, 2003 Editors revised baseline draft submitted to the ISSI Task Group for review and comment (August 7, 2003; Indianapolis, IN). Issue D October 15, 2003 Editors
