1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T E.804 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2014) SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS Quality of telecommunication services: concepts, models, objectives
2、 and dependability planning Terms and definitions related to the quality of telecommunication services QoS aspects for popular services in mobile networks Recommendation ITU-T E.804 ITU-T E-SERIES RECOMMENDATIONS OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS INTER
3、NATIONAL OPERATION Definitions E.100E.103 General provisions concerning Administrations E.104E.119 General provisions concerning users E.120E.139 Operation of international telephone services E.140E.159 Numbering plan of the international telephone service E.160E.169 International routing plan E.170
4、E.179 Tones in national signalling systems E.180E.189 Numbering plan of the international telephone service E.190E.199 Maritime mobile service and public land mobile service E.200E.229 OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE Charging in the i
5、nternational telephone service E.230E.249 Measuring and recording call durations for accounting purposes E.260E.269 UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NON-TELEPHONY APPLICATIONS General E.300E.319 Phototelegraphy E.320E.329 ISDN PROVISIONS CONCERNING USERS E.330E.349 INTERNATIONA
6、L ROUTING PLAN E.350E.399 NETWORK MANAGEMENT International service statistics E.400E.404 International network management E.405E.419 Checking the quality of the international telephone service E.420E.489 TRAFFIC ENGINEERING Measurement and recording of traffic E.490E.505 Forecasting of traffic E.506
7、E.509 Determination of the number of circuits in manual operation E.510E.519 Determination of the number of circuits in automatic and semi-automatic operation E.520E.539 Grade of service E.540E.599 Definitions E.600E.649 Traffic engineering for IP-networks E.650E.699 ISDN traffic engineering E.700E.
8、749 Mobile network traffic engineering E.750E.799 QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING Terms and definitions related to the quality of telecommunication services E.800E.809 Models for telecommunication services E.810E.844 Objectives for quali
9、ty of service and related concepts of telecommunication services E.845E.859 Use of quality of service objectives for planning of telecommunication networks E.860E.879 Field data collection and evaluation on the performance of equipment, networks and services E.880E.899 OTHER E.900E.999 INTERNATIONAL
10、 OPERATION Numbering plan of the international telephone service E.1100E.1199 NETWORK MANAGEMENT International network management E.4100E.4199 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T E.804 (02/2014) i Recommendation ITU-T E.804 QoS aspects for popular servi
11、ces in mobile networks Summary Recommendation ITU-T E.804 provides sets of quality of service (QoS) parameters from an end-users perspective for the operational aspects of mobile communication. As services per se are not standardized, it focuses on popular services, which means commonly or widely us
12、ed services. This does not preclude applying the definitions in this Recommendation for other (not widely used) services, if feasible. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T E.804 2014-02-13 12 11.1002/1000/12115 Keywords African region, drive testing, end-to-end, m
13、obile, popular services, QoS, trigger points, user perception. _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T E.804 (02/20
14、14) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for
15、studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study
16、groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis wi
17、th ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory prov
18、isions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of
19、such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no posit
20、ion concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protec
21、ted by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2014 All rights reserved. No part of
22、 this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T E.804 (02/2014) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 4 3.1 Terms defined elsewhere 4 3.2 Terms defined in this Recommendation . 4 4 Abbreviations and
23、 acronyms 8 5 Conventions 15 6 Assessment of quality of service 16 6.1 QoS background . 16 6.2 QoS assessment process . 23 6.3 Basic settings for QoS assessments 26 6.4 Service independent QoS criteria . 27 6.5 Service dependent QoS criteria 28 7 Definition of quality of service parameters and their
24、 computation 29 7.1 QoS parameter basics . 29 7.2 Service independent QoS parameters . 33 7.3 Direct services QoS parameters 48 7.4 Store-and-forward services QoS parameters 196 8 Typical procedures for quality of service measurement equipment . 250 8.1 Aim of measurement 250 8.2 Classification of s
25、ervices 250 8.3 General aspects for all types of services . 251 8.4 Telephony measurements . 253 8.5 Store-and-forward services measurement 259 8.6 Data measurements . 268 9 Requirements for quality of service measurement equipment . 284 9.1 Overview 284 9.2 General requirements 286 9.3 Fixed QoS te
26、st equipment (FQT) . 289 9.4 Mobile QoS test equipment (MQT) . 291 9.5 Mobile based measurement equipment 293 10 Definition of typical measurement profiles 293 10.1 Measurement profiles . 293 11 Post processing and statistical methods 301 11.1 Important measurement data types in mobile communication
27、s . 301 11.2 Distributions and moments . 303 11.3 Visualization techniques . 334 iv Rec. ITU-T E.804 (02/2014) Page 11.4 Time series modelling 338 11.5 Data aggregation . 349 11.6 Assessment of performance indices . 357 12 Network based quality of service measurements 359 12.1 Network measurement ba
28、sics . 359 12.2 Measuring QoS parameters in the network 360 12.3 Comparing network and end-point test measurements 361 Appendix I Examples for measuring trigger points 363 Appendix II Streaming explanations . 364 Appendix III Push to talk over cellular information . 365 III.1 Signal grouping 368 III
29、.2 PoC service registration 370 III.3 PoC publish 371 III.4 PoC session initiation, originating part 371 III.5 PoC session initiation, terminating part 373 III.6 Media Streaming 374 III.7 Talk burst request . 375 III.8 Leaving PoC session . 376 III.9 Deregistration . 376 Appendix IV QoS parameter ex
30、port . 378 IV.1 Overview 378 IV.2 XML bodies 378 Appendix V Parameters with an impact on the effect of blocking . 401 V.1 What is blocking? . 401 V.2 Which parameters have an impact on the effect of blocking? 401 V.3 The standards 401 V.4 The situation . 402 V.5 Possible solutions . 402 Appendix VI
31、Reference SMS or SDS message 404 Appendix VII Content integrity checking . 405 VII.1 HTTP 405 VII.2 FTP . 406 VII.3 MMS . 406 Appendix VIII Transfer times versus used data rate and content size 407 Appendix IX Examples of statistical calculations 408 IX.1 Confidence intervals for binomial distributi
32、on . 408 IX.2 Transition from binomial to normal distribution 411 IX.3 Definitions of EG 201 769 . 412 IX.4 Calculation of confidence intervals 412 Rec. ITU-T E.804 (02/2014) v Page IX.5 Different sample sizes 421 IX.6 Calculation methods . 423 IX.7 Reporting of results 424 Appendix X The concept of
33、 QoE reporting 427 Appendix XI Examples of network based QoS measurements 428 XI.1 Accessibility and retainability parameters 428 XI.2 Media quality parameters . 428 XI.3 Response time parameters 429 XI.4 Data rate parameters . 430 Appendix XII 3GPP SA5 “UE management“ . 432 Bibliography. 433 vi Rec
34、. ITU-T E.804 (02/2014) Introduction This Recommendation provides quality of service (QoS) parameters definitions for mobile services and related trigger points. Furthermore, it discusses all aspects of practical application thereof, including field testing and statistical considerations. Although t
35、his Recommendation has been produced under the umbrella of the SG12 RG-AFR, readers from other regions are expected to find it useful and applicable in their own regional or local context. Insofar as technical content in this Recommendation has been adopted from ETSI TS 102 250, Speech and multimedi
36、a Transmission Quality (STQ); QoS aspects for popular services in GSM and 3G networks, ITU acknowledges the copyright of ETSI. Rec. ITU-T E.804 (02/2014) 1 Recommendation ITU-T E.804 QoS aspects for popular services in mobile networks 1 Scope This Recommendation covers the following quality of servi
37、ce (QoS) aspects for popular services in mobile networks: Assessment of QoS Definition of QoS parameters and their computation Typical procedures for QoS measurement equipment Requirements for QoS measurement equipment Definition of typical measurement profiles Post processing and statistical method
38、s Network based QoS measurements. The Recommendation summarizes the basics of QoS, always seen from the users perspective. Differences to quality of experience (QoE) are also discussed. In extension to generic definitions, specific definitions for this Recommendation are stated here. Furthermore, it
39、 gives guidance to assure that QoS assessments can be conducted in a meaningful way and proposes a corresponding process. It defines QoS parameters and their computation for popular services in mobile networks. The parameter definition is split into several parts. It contains an abstract definition
40、which gives a generic description of the parameter, an abstract equation and the corresponding user and technical trigger points. The harmonized definitions are considered as prerequisites for the comparison of QoS measurements and measurement results. The Recommendation also describes the measureme
41、nt procedures needed to perform the measurements of QoS parameters. It defines the minimum requirements of QoS measurement equipment for mobile networks in the way that the values and trigger points needed to compute the QoS parameter can be measured following the procedures defined. Test equipment
42、fulfilling the specified minimum requirements will allow performing the proposed measurements in a reliable and reproducible way. Furthermore, the Recommendation specifies typical measurement profiles that are required to enable benchmarking of different mobile networks both within and outside natio
43、nal boundaries. In addition, it describes procedures to be used for statistical calculations in the field of QoS measurement of mobile networks using probing systems. Finally, the Recommendation describes how QoS measurements should be done inside the network without direct access to the end point t
44、erminal. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject t
45、o revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document withi
46、n this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. 2 Rec. ITU-T E.804 (02/2014) ITU-T E.800 Recommendation ITU-T E.800 (2008), Definitions of terms related to quality of service. ITU-T E.802 Recommendation ITU-T E.802 (2007), Framework and methodologie
47、s for the determination and application of QoS parameters. ITU-T G.109 Recommendation ITU-T G.109 (1999), Definition of categories of speech transmission quality. ITU-T G.1000 Recommendation ITU-T G.1000 (2001), Communications Quality of Service: A framework and definitions. ITU-T I.350 Recommendati
48、on ITU-T I.350 (1993), General aspects of quality of service and network performance in digital networks, including ISDNs. ITU-T P.10 Recommendation ITU-T P.10/G.100 (2006), Vocabulary for performance and quality of service; plus Amendment 2 (2008), New definitions for inclusion in Recommendation IT
49、U-T P.10/G.100. ITU-T P.56 Recommendation ITU-T P.56 (2011), Objective measurement of active speech level. ITU-T P.564 Recommendation ITU-T P.564 (2007), Conformance testing for voice over IP transmission quality assessment models. ITU-T P.800 Recommendation ITU-T P.800 (1996), Methods for subjective determination of transmission quality. ITU-T P.800.1 Recommendation ITU-T P.800.1 (2006), Mean Opinion Score (MOS) terminology.
