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ITU-T Study Group 12: Structures and Guide for University Participants. Sebastian Möller (with the support from Jean-Yves Monfort, ITU-T SG12 Chairman) Quality and Usability Lab, Deutsche Telekom Laboratories TU Berlin, Germany sebastian.moeller@telekom.de. Overview.

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itu t study group 12 structures and guide for university participants

ITU-T Study Group 12: Structures andGuide for University Participants

Sebastian Möller(with the support from Jean-Yves Monfort, ITU-T SG12 Chairman)

Quality and Usability Lab, Deutsche Telekom Laboratories

TU Berlin, Germany

sebastian.moeller@telekom.de

overview
Overview
  • Structure of ITU-T Study Group 12
    • General structure of the ITU-T
    • Study Group 12
    • Documents, etc.
  • Quality assessment and prediction for voice services
structure of itu t study group 12 general structure of the itu t

Plenipotentiary Conference

ITU Council

General

Secretariat

ITU-R

World Radiocommunication Conference

ITU-D

World Telecommunication Development Conference

ITU-T

World Telecommunication Standardization Assembly

Structure of ITU-T Study Group 12General structure of the ITU-T.
  • General Secretariat: Coordinates the Union's activities and the overall management of the Union
  • ITU-T: Telecommunication standardization on a world-wide basis on technical, operating and tariff Questions
  • ITU-R: Radio communications and wireless
  • ITU-D: Use and deployment of telecom networks and services in the developing nations
slide4

Structure of ITU-T Study Group 12Structure of ITU-T Study Groups and Working Parties.

STUDY GROUP XX

slide5

Structure of ITU-T Study Group 12Structure of ITU-T Study Groups and Working Parties.

  • Workshops / Seminars:
  • Cover the most important topics in modern telecommunication technology and applications.
  • Speakers are renowned telecommunication experts.
  • Usually free of charge and open to public .
  • To come : From Speech to Audio: Bandwidth Extension, Binaural Perception, see http://www.itu.int/ITU-T/studygroups/com12/index.asp.
  • Focus Groups:
  • Participation of non-member experts welcome.
  • Work on a well-defined topic and time-schedule for completion.
    • e.g. : IPTV Focus Group in which SG12 is involved
    • Under SG12 : Focus Group From/In/ToCarCommunication, see http://www.itu.int/ITU-T/studygroups/com12/fgfit/index.html
  • Joint Coordination Groups:
  • Coordinate a broad study by more than one study group. They do not perform technical studies nor write Recommendations.
slide6

Structure of ITU-T Study Group 12Study Group 12 mandate.

Responsible for Recommendations

on the end-to-end transmission performanceof terminals and networks, in relation to the perceived quality and acceptance by users of text, data, speech, and multi-media applications.

Although this work includes the related transmission implications of all networks and all telecommunication terminals, a special focus is given to IP QoS, interoperability and implications for NGN, and also includes work on performance and resource management.

slide7

Telephonometry, terminals and subjective

assessment

Co-Chairs : C. Quinquis, G. Lecucq

Structure of ITU-T Study Group 12Management team and structure.

SG 12 – Performance and QoS

Chairman Mr Jean-Yves Monfort

Bridging the gap

for developping countries

Mr J.J. Massima-Landji, VC

QoS Coordination

Mr C. Dvorak, VC

WP 1

TSB Support

Mrs J. Katona Kiss, Councellor

Mrs S. Scott, Secretary

WP 2

Performance, planning and tools

Mr Klemens Adler, SG 12 Vice Chair

WP 3

IP-related QoS and resource management

M. Paul Coverdale, SG 12 Vice Chair

slide8

Structure of ITU-T Study Group 12SG12 structure and questions.

SG 12 – Questions 1/12 and 15/12

Workprogram, definitions, handbooks, guides, tutorials, Bridging the Standardization Gaps

Mr JY Monfort, Mr J. Pomy, Mr J.J. Massima-Landji

Q.1/12

QoS and performance

coordination

Mr C. Dvorak

Q.15/12

slide9

Hands-free communications in vehicles

Mr H.W. Gierlich, Mr M. Rung

Structure of ITU-T Study Group 12SG12 structure and questions.

WP /12 – Telephonometry, terminals

and Subjective assessment

Co Acting Chairs C. Quinquis, G. Lecucq

Speech transmission characteristics of speech terminals … Mr Shi Denian

Q.3/12

Q.4/12

Telephonometrics methodologies for handsets and headset terminals Mr L. Madec

Q.5/12

Analysis methods using complex measurement signals…. Mr H.W. Gierlich

Q.6/12

Q.7/12

Methods, tools and test plans for the subjective assessment…Mr P. Usai and Mrs C. Quinquis

slide10

Perceptual-based objective methods for voice, audio and visual quality…Mr J. Berger

Structure of ITU-T Study Group 12SG12 structure and questions.

WP 2/12 – Performance, Planning and Tools

Chairman Mr Klemens Adler

Extension of the E-model

Mrs U. Jekosch and Mr S. Möller

Q.8/12

Q.9/12

Transmission planning and performance considerations… Mr V. Sypli

Q.10/12

Performance evaluation of services based on speech technologyMr S.Möller&MrA. Raake

Q.12/12

In-service non intrusive assessment of voice transmission performance Mr V. Barriac

Q.14/12

Q.20/12

Objective assessment of conversational speech

quality in networks Mr J. Pomy

slide11

IP based multimedia services end to end transm. planning …. M. J. Pomy

Speech transmission charact. & meas. methods for IP terminals and gatewaysMr U. Brunner

Structure of ITU-T Study Group 12SG12 structure and questions.

WP 3/12 – IP-Related QoS andRessource managementChairman Mr Paul Coverdale(also involved in Questions* 13/12 and 19/12)

Q.2/12

Q.11/12

Q.13/12

IPTV and multimedia QoE/QoS performance

requ. and assessment methods A. Takahashi

Q.16/12

Broadband and IP-related resource managementMr D. Mustill

Q.17/12

Performance of IP-based networks

Mr A. Morton and Mr H. Kim

Call processing performance

Q.19/12

slide12

QoS Development Group Mr D. Mustill

ElectroacousticsMr L. Madec, Mr H.Gerlich

Joint Rapporteur Group "Multimedia quality assessment"Mr P. Juric

Structure of ITU-T Study Group 12SG12 structure and questions.

SG 12 Liaison Officers

JRG MMQA

IEC 29

IEEE

Electroacoustics Mr A. Woo

QSDG

Communication Mr C. Dvorak,EWM Mr J. Pomy, Bridging the standardization Gaps Mr J.J. Massima-Landji

TSAG

Security, OAM, ICG-SAT Mr JY Monfort,

FGNGN Mr C.Dvorak, FGNGNMr P. Coverdale

ITU-D Mr J.J. Massima

Others

Flagship Group QoS Mr D. Waturu

slide13

Structure of ITU-T Study Group 12Questions, Rapporteurs and Editors.

Questions:

  • Set up by the WTSA or by the Study Group.
  • Define a particular subject to be studied.

Rapporteurs:

  • Appointed by the SG or a WP to each Question.
  • Ensure progress of the group of experts towards Recommendations.
  • Lead, moderate debates (e-mails, conf. Calls, etc.) and coordinate progress.
  • Chair the meetings of the experts (Rapporteurs Group Meetings).

Editors:

  • Appointed by Rapporteurs, prepare and follow-up draft Recommendations.
slide14

Structure of ITU-T Study Group 12Approval of Recommendations.

  • Alternative Approval Process (AAP):
  • For technical Recommendations
  • Once the text is considered to be mature, it is submitted for AAP at an SG or WP meeting (Rec. A.8)
  • Traditional Approval Process (TAP):
  • For Recommendations subject to policy or regulatory implications
  • Initiated at an SG or WP meeting and completed, for final approval, at the subsequent SG meeting (Res. 1)
slide15

Structure of ITU-T Study Group 12AAP Sequence.

Approved

LC

4 weeks

(a)

3 weeks

Approved

4

(b)

Director's

SG

SG or

Edited

Director's

(c)

Meeting

text

announcement

WP

announcement

(7)

and posting

and posting

(

6

)

meeting

for LC

AR

for LC

Comment

(

1

)

(

2

)

(5)

(a)

(b)

3 weeks

resolution

(

3

)

Approved

9

11

(b)

(a)

Edited

Director's

Director's

notification

announcement

text

for AR

and publication

and posting

LC: Last Call

for AR

(8)

(see Rec. A.11)

(

10

)

(

12

)

AR: Additional Review

TG120480-00

See Figure 1 (Rec. A.8)

slide16

Structure of ITU-T Study Group 12Meeting documentation.

  • Contributions (C):
  • To be submitted at least 10 calendar days before the meeting.
  • Reports (R):
  • Official records of SG or WP meetings. To be available shortly after the closure of the meetings (Rec. A.1).
  • Temporary Documents (TDs):
  • Submitted by an ‘official’ (a member of the SG Management Team, Rapporteur, Editor, etc.) within the meeting participants.

Working Documents (WDs):

  • Issued during meetings by small groups.
overview18
Overview
  • Structure of ITU-T Study Group 12
  • Quality assessment and prediction for voice services
    • Quality assessment and prediction
    • Taxonomy of prediction models
    • E-model for NB and WB networks
quality assessment and prediction voice services

Motivation,

Goals

Linguist.

Backgr.

Experi-

ence

Attitude

Emotions

User Factors

Subjective Quality Judgment

Transmission

System

System

Parameters

Estimated Quality Index

Model

Quality Assessment and PredictionVoice services.
  • Our focus: Methods for assessing narrow-band and wideband speech, but also video quality
quality assessment and prediction quality aspects of transmitted speech

Quality of Service

Speech Communication Factors

Service

Factors

Contextual

Factors

Voice Transmission

Quality

Ease of Communication

Conversation Effectiveness

Communication Efficiency

Service Efficiency

Economical Benefit

User

Factors

Usability

User

Satisfaction

Utility

Acceptability

Quality Assessment and PredictionQuality aspects of transmitted speech.

Quality:

Result of judgment of the

perceived composition of

an entity with respect

to its desired composition.

(Jekosch, 2005)

  • Quality of Service(Rec. E.800)
  • Quality of Experience

Quality of Experience

(Möller, 2000)

quality assessment and prediction taxonomy of prediction models
Quality Assessment and Prediction Taxonomy of prediction models.

Input information:

  • Signals
    • one or two signals
    • acoustic or electric
  • Parameters
  • Protocol information

Measurement of input information:

  • Online
  • Offline
  • Estimation

Output information:

  • Listening-only
    • integral quality
    • quality features
  • Conversational
  • Talking-only

Application area:

  • Planning
  • Set-up and optimization
  • Monitoring

Network type:

  • Narrow-band
  • Wideband
quality assessment and prediction e model for narrow band networks

IP WAN

Quality Assessment and Prediction E-model for narrow-band networks.

Linear distortion, delay

Backgr.noise,acoustic

coupling

Codec

Jitterbuffer,

VAD

Packetloss

Talker echo,

listener echo

Circuit

noise

Backgr.noise,acoustic

coupling

quality assessment and prediction e model for narrow band networks25

SLR, RLR, Ta

IP WAN

Ps, Ds,

STMR

Ie, qdu

Bpl

Ppl

TELR, T,

WEPL, Tr

Nc, Nfor

Pr, Dr,

LSTR

Quality Assessment and Prediction E-model for narrow-band networks.

Impairments SNR simultaneous delayed nonlin./timevar.

Overall quality R = Ro - Is - Id - Ie,eff

Estimated user judgment MOS = f (R )

quality assessment and prediction e model extension for wideband networks
Quality Assessment and Prediction E-model extension for wideband networks.

Ro,max = 129

(Raake, 2006; Appendix II, ITU-T Rec. G.107, 2006)

quality assessment and prediction e model extension for wideband networks27
Quality Assessment and Prediction E-model extension for wideband networks.

Ro,max = 129

AMR-WB (23.05)

AMR-WB (6.6)

(Raake, 2006;

Möller et al., 2006)

slide28

Thanks to Jean-Yves Monfort (ITU-T SG12 Chairman) for providing the description of Study Group 12.Thank you for your attention.Visit www.qu.tlabs.tu-berlin.de for more information.