1、 TSB-88.5 December 2016Wireless Communications Systems Performance in Noise and Interference Limited Situations Part 5: Recommended Methods for Technology- Independent Broadband Performance Verification NOTICE TIA Engineering Standards and Publications are designed to serve the public interest throu
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20、OULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TSB-88.5 i TABLE OF CONTENTS FOREWORD iv INTRODUCTION . .vi 1. Scope 1 1.1. The TSB-88 Series 1 1.2. TSB-88.5 . 3 2. References 4 3. Defintions and Abreviations . 5 3.1. Definitions 5 3.2. Abbreviations . 9 4. Test Methods . 11 5. PERFORMANCE CO
21、NFIRMATION 11 5.1. Conformance Validation Overview . 11 5.2. Validated Service/Covered Area Reliability . 13 5.3. Determination of Number of Test Tiles (Outdoor only) 13 5.3.1. Estimate of Proportions . 13 5.4. Pass/Fail Test Criteria . 15 5.4.1. The “Greater Than” Test . 15 5.4.2. The “Acceptance W
22、indow” Test 15 5.5. Confidence of Performance Verification 16 5.5.1. Confidence Level 16 5.5.2. Confidence Interval . 16 5.6. Tile Size Constraints Accommodating the design and frequency coordination of bandwidth-efficient narrowband technologies likely to be deployed as a result of the Federal Comm
23、unications Commission “Spectrum Refarming” efforts; Assessing and quantifying the impact of new narrowband/bandwidth efficient digital and analog technologies on existing analog and digital technologies; Address the methodology to minimize intersystem interference between systems at national boundar
24、ies; Assessing and quantifying the interference impact between narrowband technologies and broadband technologies; Addressing migration and spectrum management issues involved in the transition either to narrowband/bandwidth efficient digital and analog technologies or to broadband technologies. Pro
25、vide information on new and emerging Land Mobile bands; Address the methodology of minimizing system interference between current or proposed Noise Limited Systems in spectral and spatial proximity to current or proposed Interference Limited Systems; and The TSB-88 series of documents was prepared p
26、artially in response to specific requests from three particular user organizations: the Association of Public Safety Communications Officials, International (APCO), the Land Mobile Communications Council (LMCC) and the National Coordination Committee (NCC).1This document, TSB-88.5, is intended to ad
27、dress coverage verification within the context described above. 1The National Public Safety Telecommunications Council (NPSTC) has assumed the responsibilities of the NCC which has been disbanded. TSB-88.5 1 Wireless Communications Systems - Performance in Noise and Interference-Limited Situations P
28、art 5: Recommended Methods for Technology-Independent Broadband Performance Verification 1. SCOPE 1.1. The TSB-88 Series The TSB-88 series of bulletins gives guidance on the following areas: Establishment of standardized methodology for modeling and simulating either narrowband/bandwidth efficient t
29、echnologies or broadband technologies; Establishment of a standardized methodology for empirically confirming the performance of either narrowband/bandwidth efficient systems or broadband systems; Aggregating the modeling, simulation and empirical performance verification reports into a unified “Spe
30、ctrum Management Tool Kit” which can be employed by frequency coordinators, systems engineers, software developers, and system operators; Recommended datasets that are available for improved results from modeling and simulation; and Providing current information for new and emerging bands. The purpo
31、se of these documents is to define and advance a scientifically sound standardized methodology for addressing technology compatibility. This document provides formal structure and quantitative technical parameters from which automated design and spectrum management tools can be developed based on pr
32、oposed configurations that can temporarily exist during a migration process or for longer term solutions for systems that have different technologies. As wireless communications systems evolve, the complexity in determining compatibility between different types of modulation, different operational g
33、eographic areas, and application usage increases. Spectrum managers, system designers and system maintainers have a common interest in utilizing the most accurate and repeatable modeling and simulation capabilities to determine likely wireless communication system performance. A standardized approac
34、h and methodology is needed for the modeling and simulation of wireless communications systems performance, considering both analog and digital practices in all frequency bands of interest. In addition, after deployment, validation or acceptance testing is often an issue subject to much debate and u
35、ncertainty. Long after a system is in place and optimized, future interference dispute resolution necessitates application of an TSB-88.5 2 industry accepted and standardized methodology for assessing system performance and interference. These documents contain recommendations for both public safety
36、 and non-public safety performance that ought to be used in the modeling and simulation of these systems. These documents also satisfy the desire for a standardized empirical measurement methodology that is useful for routine proof-of-performance and acceptance testing and in dispute resolution of i
37、nterference cases that are likely to emerge in the future. To provide this utility necessitates that specific manufacturers define various performance criteria for the different capabilities and their specific implementations. Furthermore, sufficient reference information is provided so that softwar
38、e applications can be developed and employed to determine if the desired system performance has been realized. Wireless system performance can be modeled and simulated with the effects of single or multiple potential distortion sources taken into. These sources include: Performance parameters Co-cha
39、nnel users Off-channel users Internal noise sources External noise sources Equipment non-linearity Transmission path geometry and transmission loss modeling Delay spread and differential signal phase Over the air and network protocols Performance verification Predictions of system performance can th
40、en be evaluated based on the desired RF carrier versus the combined effects of single or multiple performance degrading sources. Performance is then based on a faded environment to more accurately simulate actual usage and considers both signal magnitude and phase attributes. It is anticipated that
41、this series of documents will serve as the standard reference for developers and suppliers of land mobile communications system design, modeling, simulation and spectrum management software and automated tools. TSB-88.5 3 1.2. TSB-88.5 This document, TSB-88.5, provides additional guidance for establ
42、ishing a standardized methodology for verifying performance of broadband technologies for public safety systems. TSB-88.5 addresses performance verification and the parametric values used to accomplish that verification within the context described in 1.1. Single frequency reuse technology such as L
43、TE present new validation challenges with respect to internal and external interference. For these new broadband technologies, system traffic load impacts performance and must be properly accounted for in the validation field test. Further, a variety of metrics can be envisioned for validating broad
44、band performance with subtleties such as the OSI layer at which the metric is measured. The potential for confusion in validation parameters and procedures demands the application of an industry accepted and standardized methodology for assessing broadband system performance. The performance recomme
45、ndations for the measurement methodology in TSB-88.5 cover best effort data systems. The scope might expand in the future to cover other classes of data such as VoLTE and streaming video. TSB-88.5 4 2. REFERENCES This Telecommunications System Bulletin contains only informative information. There ar
46、e references to TIA and 3GPP standards which contain normative elements. These references are primarily to indicate the methods contained in those documents. At the time of publication, the edition indications were valid. All standards and bulletins are subject to revision and parties to agreements
47、based on this document are encouraged to investigate the possibility of applying the most recent edition of the standards or bulletins indicated in 3. ANSI and TIA maintain registers of currently valid national standards published by them. TSB-88.5 5 3. DEFINTIONS AND ABREVIATIONS There is a compreh
48、ensive Glossary of Terms, Acronyms, and Abbreviations listed in Annex-A of TIA TSB-102. In spite of its size, numerous unforeseen terms still may have to be defined for the Compatibility aspects. Items being specifically defined for the purpose of this document are indicated as (New). All others wil
49、l be referenced to their source as follows: ANSI/IEEE 100-2000 Standard Dictionary IEEE TIA-603-D 603 TIA/EIA-102.CAAA-C 102.CAAA Recommendation ITU-R P.1407-4 ITU3 Report ITU-R M.2014 ITU8 TIA -845-B 845 TSB-88.1-D 88.1 TSB-88.2-E 88.2 TSB-88.3-D 88.3 TSB-88.4 88.4 The preceding documents are referenced in this bulletin. At the time of publication, the editions indicated were valid. All such documents are subject to revision, and parties to agreements based on this document are encouraged to investiga
