IEC TR 63478-1:2023

IEC TR 63478-1 ®
Edition 1.0 2023-11
TECHNICAL
REPORT
colour
inside
User’s quality of experience on multimedia conferencing services –
Part 1: General
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TR 63478-1 ®
Edition 1.0 2023-11
TECHNICAL
REPORT
colour
inside
User’s quality of experience on multimedia conferencing services –

Part 1: General
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.160.60  ISBN 978-2-8322-7892-5

– 2 – IEC TR 63478-1:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
3.1 Definitions. 6
3.2 Abbreviated terms . 6
4 Consideration on QoE . 6
4.1 QoE characteristics . 6
4.2 QoE requirements . 7
4.3 QoE parameters . 8
5 QoE measurement framework . 8
5.1 Functional entities . 8
5.2 QoE measurement operations between functional entities. 9
6 QoE measurement models . 10
6.1 General . 10
6.2 Common survey model. 10
6.3 Timeline rating model . 11
6.4 Honeycomb model . 11
Annex A (informative) Visualization of QoE measurement . 13
A.1 QoE measurement timeline . 13
A.2 QoE grading . 13
A.3 QoE measurement table . 14
Annex B (informative) Gap analysis with the existing relevant standards . 15
Bibliography . 20

Figure 1 – Various QoE requirements for multimedia conferencing services . 7
Figure 2 – QoE measurement operations between functional entities . 9
Figure 3 – Common survey model . 10
Figure 4 – Timeline rating model . 11
Figure 5 – Honeycomb model for UI/UX measurement . 12
Figure A.1 – QoE measurement timeline . 13
Figure A.2 – Grading of absolute category rating . 13
Figure A.3 – Grading of Honeycomb rating . 14
Figure A.4 – QoE measurement table . 14
Figure B.1 – Overview of relevant standards . 15

Table 1 – QoE parameters . 8
Table B.1 – List of standards on UX and MM . 15
Table B.2 – List of standards on NP and MM . 16
Table B.3 – List of standards on NP and SA . 18
Table B.4 – List of standards on UX and SA . 19

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
USER’S QUALITY OF EXPERIENCE ON MULTIMEDIA
CONFERENCING SERVICES –
Part 1: General
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC TR 63478-1 has been prepared by IEC technical committee 100: Audio, video and
multimedia systems and equipment. It is a Technical Report.
The text of this Technical Report is based on the following documents:
Draft Report on voting
100/4037/DTR 100/4071/RVDTR
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Report is English.

– 4 – IEC TR 63478-1:2023 © IEC 2023
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 63478 series, published under the general title User’s quality of
experience on multimedia conferencing services, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

INTRODUCTION
With the global COVID-19 pandemic, business and education meetings have shifted from offline
to online environments. Consequently, a range of multimedia conferencing services has been
developed, enabling users to choose and enjoy conferencing services based on personal
preferences. To ensure optimal user experience, it is essential to measure the quality of
experience (QoE) for multimedia conferencing services. However, there is currently a lack of
standardized methods for measuring a user's QoE in this context. Thus, there is a pressing
need to provide guidelines for measuring and evaluating a user's QoE for multimedia
conferencing services.
Traditionally, quality of service (QoS) has been measured for network data communication,
represented by objective index values like delay, throughput, and jitter. In contrast, QoE
represents a user's level of satisfaction with a specific service and reflects human emotional
quality. As such, QoE is subject to overall service performance from the user's perspective. In
the case of multimedia conferencing services, measuring QoE is challenging due to var
...