EN IEC 63478-2:2025

SLOVENSKI STANDARD
01-marec-2025
Kakovost uporabniške izkušnje (QoE) za multimedijske konferenčne storitve – 2.
del: Zahteve
User’s quality of experience (QoE) on multimedia conferencing services - Part 2:
Requirements
Qualité de l'expérience de l'utilisateur (QoE) pour les services de conférence multimédia
- Partie 2: Exigences
Ta slovenski standard je istoveten z: prEN IEC 63478-2:2025
ICS:
33.160.60 Večpredstavni (multimedijski) Multimedia systems and
sistemi in oprema za teleconferencing equipment
telekonference
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

100/4246/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63478-2 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-01-17 2025-04-11
SUPERSEDES DOCUMENTS:
100/4188/CD, 100/4216/CC
IEC TC 100 : AUDIO, VIDEO AND MULTIMEDIA SYSTEMS AND EQUIPMENT
SECRETARIAT: SECRETARY:
Japan Ms Mahiru Uehara
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
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TITLE:
User’s Quality of Experience (QoE) on Multimedia Conferencing Services - Part 2:
Requirements
PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
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100/4246/CDV – 2 – IEC CDV 63478-2 © IEC 2025
1 CONTENTS
3 FOREWORD . 3
4 INTRODUCTION . 5
5 1 Scope . 6
6 2 Normative references . 6
7 3 Terms and definitions . 6
8 4 Overview . 7
9 5 QoE Parameters . 8
10 5.1 General . 8
11 5.2 Video quality . 9
12 5.3 Audio quality . 9
13 5.4 Synchronization . 9
14 5.5 Accessibility . 10
15 5.6 Interoperability . 10
16 5.7 Participation . 11
17 5.8 Openness . 11
18 5.9 UI/UX . 11
19 6 Requirements for QoE functional operations . 12
20 6.1 General . 12
21 6.2 QoE initialization . 13
22 6.3 QoE monitoring . 13
23 6.4 QoE evaluation . 13
24 7 Requirements for QoE functional entities . 14
25 7.1 General . 14
26 7.2 Multimedia Conferencing Server (MCS) . 14
27 7.3 Multimedia Conferencing Client (MCC) . 14
28 7.4 QoE Measurement Agent (QMA) . 15
29 7.5 QoE Measurement Manager (QMM) . 15
30 Bibliography . 16
32 Figure 1 – Functional entities and operations for QoE measurement . 12
34 Table 1 – List of parameters for QoE measurement . 8
35 Table 2 – Requirements for QoE functional entities . 14
IEC CDV 63478-2 © IEC 2025            – 3 –                      100/4246/CDV
38 INTERNATIONAL ELECTROTECHNICAL COMMISSION
39 ____________
41 USER’S QUALITY OF EXPERIENCE ON MULTIMEDIA CONFERENCING
42 SERVICES
44 Part 2: Requirements
48 FOREWORD
49 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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71 6) All users should ensure that they have the latest edition of this publication.
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76 Publications.
77 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
78 indispensable for the correct application of this publication.
79 9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
80 patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
81 respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
82 may be required to implement this document. However, implementers are cautioned that this may not represent
83 the latest information, which may be obtained from the patent database available at https://patents.iec.ch or
84 www.iso.org/patents. IEC shall not be held responsible for identifying any or all such patent rights.
85 IEC 63478-2 has been prepared by subcommittee WG 11: USER’S QUALITY OF EXPERIENCE
86 (QoE) ON MULTIMEDIA CONFERENCING SERVICES, of IEC technical committee TC 100:
87 AUDIO, VIDEO AND MULTIMEDIA SYSTEMS AND EQUIPMENT. It is an International
88 Standard.
89 The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
100/4246/CDV – 4 – IEC CDV 63478-2 © IEC 2025
91 Full information on the voting for its approval can be found in the report on voting indicated in
92 the above table.
93 The language used for the development of this International Standard is English.
94 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
95 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement available
96 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
97 described in greater detail at www.iec.ch/publications.
98 The committee has decided that the contents of this document will remain unchanged until the
99 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
100 specific document. At this date, the document will be
101 • reconfirmed,
102 • withdrawn,
103 • replaced by a revised edition, or
104 • amended.
IEC CDV 63478-2 © IEC 2025            – 5 –                      100/4246/CDV
106 INTRODUCTION
107 With the global COVID-19 pandemic, the meetings on business and education have shifted from
108 offline to online modes. Consequently, a range of multimedia conferencing services have been
109 developed, enabling users to choose and enjoy conferencing services based on personal
110 preferences. To ensure optimal user experience, it is essential to measure the Quality of
111 Experience (QoE) for multimedia conferencing services. However, there is currently a lack of
112 standardized methods for measuring a user's QoE in this context. Thus, there is a pressing
113 need to provide standards for measuring and evaluating a user's QoE for multimedia
114 conferencing services.
115 Traditionally, Quality of Service (QoS) has been measured for network data communication,
116 represented by objective index values like delay, throughput, and jitter. In contrast, QoE
117 represents a user's level of satisfaction with a specific service and reflects human emotional
118 quality. As such, QoE is subject to overall service performance from the user's perspective. In
119 the case of multimedia conferencing services, measuring QoE is challenging due to varying
120 user preferences, as well as varying services and application characteristics. Therefore, a
121 unified framework is necessary to measure and evaluate a user's QoE for multimedia
122 conferencing services.
123 This document (IEC 63478) aims to provide standards for enhancing a user's QoE for
124 multimedia conferencing services. The series specifies general considerations and
125 requirements to enhance a user's QoE and measurement methods for associated QoE
126 parameters.
127 The IEC 63478 consists of the following parts:
128 - Part 1: General;
129 - Part 2: Requirements; and
130 - Part 3: Measurement methods.
131 Part 1 of IEC 63478-1 (Technical Report) describes general considerations to measure user's
132 QoE.
133 Part 2 of IEC 63478-2 (International Standard) describes the requirements to be considered to
134 measure user's QoE.
135 Part 3 of IEC 63478-3 (International Standard) describes the measurement methods for QoE
136 parameters.
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