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Executive Summary, SG12, Nov/Dec 2018

​​​​​​Executive summary: Meeting of ITU-T Study Group 12 (Performance, Quality of Service, Quality of Experience), Geneva, 27 November - 6 December 2018

Note: This is not an official record and is subject to correction or modification

Overview

ITU-T Study Group 12 held its fourth meeting of the study period in Geneva, 27 November – 6 December 2018. The meeting was attended by 141 participants from 50 countries. 12 delegates used the remote participation facilities.

The meeting received 87 Contributions​ and handled 169 TDs​. Delegates reviewed 41 incoming Liaison statements and adopted 16 outgoing Liaison statements.

Ten Recommendations were consented (4 new, 5 revised, 1 Amendment) by the meeting (see below for details).

A pre-SG12 meeting workshop took place on 26 November and discussed "Telecommunication Service Quality Regulatory Frameworks and Experience-Driven Networking".

A webinar (announcement | recording | slides) was held on 6 December 2018 following the closing plenary, summarizing key meeting results.​

Major accomplishments

Completed work

ITU-T Rec. No. Question Reference New/Rev. Title AAP/Last Call
G.191
2/12 TD648R3
Rev.​
Software tools for speech and audio coding standardization
AAP​-49
P.1100
4/12

TD644R1
Rev.Narrowband hands-free communication in motor vehicles
AAP-49
P.1110
4/12 TD643R2
Rev.​
Wideband hands-free communication in motor vehicles
AAP-49
P.340 Amd.
6/12 TD646R1
Rev.
Transmission characteristics and speech quality parameters of hands-free terminals
AAP-49
P.811
7/12 TD655R4
New
Subjective test methodology for evaluating speech oriented stereo communication systems over headphones AAP-49
​Y.1550
​8/12
TD703R1
​New
​Considerations for realizing virtual measurement systems
​AAP-49
​G.1028.1
​11/12
TD630​
​New
​End-to-end QoS for video telephony over 4G mobile networks
​AAP-49
​P.917

​13/12
​TD726
​New
​Subjective test methodology for assessing impact of initial loading delay on quality of experience
​AAP-49
P.1203.1

14/12 TD735
Rev.
Parametric bitstream-based quality assessment of progressive download and adaptive audiovisual streaming services over reliable transport - Video quality estimation module AAP-49
P.1203.3
14/12 TD736
Rev.Parametric bitstream-based quality assessment of progressive download and adaptive audiovisual streaming services over reliable transport - Quality integration module AAP-49

The meeting consented new ITU-T Recommendations on
(1) ​ End-to-end QoS for video telephony over 4G mobile networks (will be known as ITU-T G.1028.1);
(2) ​ Subjective test methodology for evaluating speech oriented stereo communication systems over headphones (ITU-T P.811);
(3) ​ Subjective test methodology for assessing impact of initial loading delay on quality of experience (ITU-T P.917);
(4) ​ Considerations for realizing virtual measurement systems (ITU-T Y.1550).

The meeting consented revisions and amendments to existing ITU-T Recommendations on
(5) ​ Software tools for speech and audio coding standardization (ITU-T G.191);
(6) ​ Transmission characteristics and speech quality parameters of hands-free terminals (ITU-T P.340 Amendment);
(7) ​ Narrowband hands-free communication in motor vehicles (ITU-T P.1100);
(8) ​ Wideband hands-free communication in motor vehicles (ITU-T P.1110);
(9) ​ Parametric bitstream-based quality assessment of progressive download and adaptive audiovisual streaming services over reliable transport - Video quality estimation module (P.1203.1); and
(10) ​ ​Parametric bitstream-based quality assessment of progressive download and adaptive audiovisual streaming services over reliable transport - Quality integration module (P.1203.3).

New work items

SG12 established work items for new Recommendations on the following topics:
(1) ​ Application guide for ITU-T Recommendation E.804 (E.804.1);
(2) ​ Methodology for determining QoE-relevant KPI thresholds (G.MDKT); and
(3) ​ Dimension-based subjective quality evaluation for video content (P.VQD).

WTSA matters

Implementation of WTSA Resolution 95 (ITU-T initiatives to raise awareness on best practices and policies related to service quality) is progressing.

A new web page created by SG12 contains information on a questionnaire released by SG12 on the status of national quality regulatory frameworks, as well as country case studies and SG12 activities to implement the Resolution. The web page can be found at https://www.itu.int/en/ITU-T/studygroups/2017-2020/12/Pages/resolution95.aspx.

Between December 2017 and October 2018, Study Group 12 conducted a survey among ITU member states to collect detailed information about QoS and QoE indicators, measurement strategies, enforcement and publication approaches. The survey results were presented at a pre-SG12 meeting workshop on Telecommunication Service Quality Regulatory Frameworks and Experience-Driven Networking, held on 26 November 2018. The “Report of the questionnaire on the status of national quality regulatory frameworks” is available here.

In response to WTSA-16 Resolution 95, development of a new Recommendation ITU-T E.RQUAL – Strategies to establish quality regulatory frameworks – is progressing in SG12 according to plan. The work item was established during the first SG12 meeting of the current study period (January 2017), and based on the contributions and comments received from many ITU members, in particular from national regulatory authorities, stable text in SG12-TD712 was prepared during the meeting.

Other activities

​A technical tutorial on Rail QoE metrics: Key enabler for trackside mobile networks - novel concepts to assess QoE in rail use cases was given by a representative of Deutsche Bahn, Germany.

Approximately 15 people from 10 countries attended the SG12 newcomers’ session.

SG12 in the news

Results by group directly reporting to Plenary

Q1/12

Q2/12

SG12 Regional Group on QoS for the Africa Region (SG12RG-AFR)

Quality of Service Development Group (QSDG)

Results by working party

Working Party 1/12

Working Party 2/12

Working Party 3/12

Future meetings and workshops

Meetings of SG12

Meetings of Rapporteur groups

Please see ​​here for updated information). Additional conference calls of Questions will be announced on the respective mailing lists.​

Meeting of SG12 Regional for QoS for the Africa Region (SG12RG-AFR)

Meeting of Quality of Service Development Group (QSDG)

SG12 Workshops