ITU-T Study Group 12
Performance, QoS and QoE
Summary of Results
Study Period 2009-2012
Charles Dvorak, SG 12 Chairman
Contents
Terms of reference
Highlights of achievements
Proposed Terms of reference (slight mod.)
Future work
Conclusions
Supplemental slides
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
2
SG 12 Terms of Reference
Responsible for Recommendations on performance,
quality of service (QoS) and quality of experience
(QoE) for the full spectrum of terminals, networks
and services ranging from speech over fixed
circuit-based networks to multimedia applications
over networks that are mobile and packet-based.
Included in this scope are the operational aspects
of performance, QoS and QoE.
A special focus is given to interoperability to ensure
end-to-end users' satisfaction.
Lead SG for QoS and Performance
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
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Highlights of achievements (I)
Smooth integration of QoS-related work
moved to SG 12 from SG 2 by WTSA-08
FG on Driver Distraction created and active
New Rec. E.803 based on the work of the
Regional Group for Africa and the QSDG
New Rec. P.1100 and P.1110 based on the
work of the FG on Car Communications
Six new Rec. consented in two authorized
meetings of WP 2/12 chaired by Mr. Adler
Three new G.1080 Recs. on IPTV QoS/QoE
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
4
Highlights of achievements (II)
Five new Rec. in a new P.1200 Series on the
Assessment of A/V Media Streaming Quality
New Rec. P.863 on Perceptual Objective
Listening Quality Assessment
New Rec. Y.1564: Ethernet Serv. Activation
Testing--already widely used by industry
New Rec. Y.1566 on QoS mapping and Interconnect of Ethernet, IP and MPLS networks
New Rec. P.381 on Universal Wired Headset
Interface Requirements and Test Methods
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
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Highlights of achievements (III)
New Rec. G.107.1 on the Wideband E-model
New Rec. P.1301, rel. to Telepresence QoE
New Rec. Y.1565 on Home Networking
Performance Parameters
New Handbook on Subjective Testing
Practical Procedures
Revision/updating of many well-known
existing Recommendations of SG 12 (e.g.,
G.107, P.56, P.311, Y.1221, Y.1541, etc.)
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
6
Terms of Reference (proposed)
Responsible for Recommendations on performance,
quality of service (QoS) and quality of experience
(QoE) for the full spectrum of terminals, networks
and services ranging from speech over fixed
circuit-based networks to multimedia applications
over networks that are mobile and packet based.
Included in this scope are the operational aspects
of performance, QoS and QoE; the end-to-end
quality aspects of interoperability; and the
development of multimedia quality assessment
methodologies, both subjective and objective.
Lead SG for Performance, QoS and QoE
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
7
Examples of Future Work
QoE of Web-browsing and other apps
Framework for invoking diagnostic funct.
QoE requirements for telepresence; and
telemeeting and conferencing services
Models for Client Performance Metrics
Multidimensional scaling quality assessment
Objective prediction of speech intelligibility
Parametric non-intrusive A/V assessment
Many new subjective test methods needed
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
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Conclusion
SG 12 works on all performance aspects
(terminals, systems, networks, etc.), so the
end-to-end view of the user is captured.
Meaningful progress by SG 12 will happen
in the future because it continues to evolve
its work programme to address the
performance, QoS and QoE of new
technologies, networks and services, such
as IPTV, advanced audio, Ethernet, home
networking, multimedia, etc.
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
9
Supplemental Slides
Management team
Study Group Structure
General Information
Acknowledgements
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
10
Management Team
Chair(s)
Charles A. Dvorak
(USA)
Vice-Chairs:
Paul Barrett
(UK)
Vladimir Efimushkin
(Russia)
Gamal Amin Elsayed
(Sudan)
Hyung-Soo (Hans) Kim
(Korea)
Feng Qi
(China)
Catherine Quinquis
(France)
Akira Takahashi
(Japan)
Hassan Talib
(Morocco)
Catherine Quinquis
(France)
Klemens P. F. Adler
(Germany)
Paul Coverdale
(China)
WP Chairs:
TSB
Judit Katona Kiss
Hiroshi Ota
Sarah Scott
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
11
Study Group Structure
WP1/12
Terminals & multimedia subjective assessment
WP2/12
Objective models & tools for multimedia quality
WP3/12
Multimedia QoS and QoE
Groups reporting to SG 12:
FG on Car Communications
FG on Driver Distraction
Quality of Service Development Group
Regional Group for Africa (on QoS and QoE)
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
12
General Information
43 New/Revised Recommendations
approved
17 Questions assigned by WTSA-08
1 New or revised Questions during period
17 Questions proposed for next period
40 Rapporteurs meetings held
347 contributions received
6 SG meetings held
Max/Min/Average SG participants:
118/103/111
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
13
Acknowledgements
In any standards development organization, substantial
progress occurs because of the right balance of timely
technical contributions and trusted, competent leadership.
SG 12 is a role model for this statement—because of the
Vice-Chairs, the WP chairs, chairs of the Groups that report
to SG 12, the rapporteurs, the editors, and the many active
participants. Thanks to all they did--and for making it fun!
Many talented people on the TSB staff supported us really
well. My sincere thanks to all who worked so hard in the
background so that we could be successful in our efforts.
For their dedication and diligence, special thanks to the TSB
staff who were assigned to SG12: Judit Katona Kiss (our
recently retired Counsellor), Hiroshi Ota, and Sarah Scott.
ITU-T Study Group 12
Performance, QoS and QoE
International
Telecommunication
Union
14