Presentation on theme: "Overview Structure of ITU-T Study Group 12"— Presentation transcript:
0 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 LaboratoriesTU Berlin, GermanyKonzernentwicklung
1 Overview Structure of ITU-T Study Group 12 General structure of the ITU-TStudy Group 12Documents, etc.Quality assessment and prediction for voice servicesKonzernentwicklung
2 Structure of ITU-T Study Group 12 General structure of the ITU-T. Plenipotentiary ConferenceITU CouncilITU-TWorld Telecommunication Standardization AssemblyITU-RWorld Radiocommunication ConferenceITU-DWorld Telecommunication Development ConferenceGeneralSecretariatGeneral Secretariat: Coordinates the Union's activities and the overall management of the UnionITU-T: Telecommunication standardization on a world-wide basis on technical, operating and tariff QuestionsITU-R: Radio communications and wirelessITU-D: Use and deployment of telecom networks and services in the developing nationsKonzernentwicklung
3 Structure of ITU-T Study Group 12 Structure of ITU-T Study Groups and Working Parties. STUDY GROUP XXKonzernentwicklung
4 Structure of ITU-T Study Group 12 Structure 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, seeFocus 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 involvedUnder SG12 : Focus Group From/In/ToCarCommunication, seeJoint Coordination Groups:Coordinate a broad study by more than one study group. They do not perform technical studies nor write Recommendations.Konzernentwicklung
5 Structure of ITU-T Study Group 12 Study Group 12 mandate. Responsible for Recommendationson the end-to-end transmission performance of 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.
6 SG 12 – Performance and QoS Structure of ITU-T Study Group 12 Management team and structure.SG 12 – Performance and QoSChairman Mr Jean-Yves MonfortBridging the gapfor developping countriesMr J.J. Massima-Landji, VCQoS CoordinationMr C. Dvorak, VCWP 1Telephonometry, terminals and subjectiveassessmentCo-Chairs : C. Quinquis, G. LecucqTSB SupportMrs J. Katona Kiss, CouncellorMrs S. Scott, SecretaryWP 2Performance, planning and toolsMr Klemens Adler, SG 12 Vice ChairWP 3IP-related QoS and resource managementM. Paul Coverdale, SG 12 Vice Chair
7 Structure of ITU-T Study Group 12 SG12 structure and questions. SG 12 – Questions 1/12 and 15/12Workprogram, definitions, handbooks, guides, tutorials, Bridging the Standardization GapsMr JY Monfort, Mr J. Pomy, Mr J.J. Massima-LandjiQ.1/12QoS and performancecoordinationMr C. DvorakQ.15/12
8 WP /12 – Telephonometry, terminals and Subjective assessment Structure of ITU-T Study Group 12 SG12 structure and questions.WP /12 – Telephonometry, terminalsand Subjective assessmentCo Acting Chairs C. Quinquis, G. LecucqSpeech transmission characteristics of speech terminals … Mr Shi DenianQ.3/12Hands-free communications in vehiclesMr H.W. Gierlich, Mr M. RungQ.4/12Telephonometrics methodologies for handsets and headset terminals Mr L. MadecQ.5/12Analysis methods using complex measurement signals… Mr H.W. GierlichQ.6/12Q.7/12Methods, tools and test plans for the subjective assessment… Mr P. Usai and Mrs C. Quinquis
9 WP 2/12 – Performance, Planning and Tools Structure of ITU-T Study Group 12 SG12 structure and questions.WP 2/12 – Performance, Planning and ToolsChairman Mr Klemens AdlerExtension of the E-modelMrs U. Jekosch and Mr S. MöllerQ.8/12Perceptual-based objective methods for voice, audio and visual quality… Mr J. BergerQ.9/12Transmission planning and performance considerations… Mr V. SypliQ.10/12Q.12/12Performance evaluation of services based on speech technology Mr S.Möller&MrA. RaakeQ.14/12In-service non intrusive assessment of voice transmission performance Mr V. BarriacQ.20/12Objective assessment of conversational speechquality in networks Mr J. Pomy
10 Structure of ITU-T Study Group 12 SG12 structure and questions. WP 3/12 – IP-Related QoS andRessource management Chairman Mr Paul Coverdale (also involved in Questions* 13/12 and 19/12)Q.2/12Speech transmission charact. & meas. methods for IP terminals and gateways Mr U. BrunnerQ.11/12IP based multimedia services end to end transm. planning … M. J. PomyQ.13/12IPTV and multimedia QoE/QoS performancerequ. and assessment methods A. TakahashiQ.16/12Broadband and IP-related resource management Mr D. MustillQ.17/12Performance of IP-based networksMr A. Morton and Mr H. KimQ.19/12Call processing performance
11 Structure of ITU-T Study Group 12 SG12 structure and questions. SG 12 Liaison OfficersJoint Rapporteur Group "Multimedia quality assessment" Mr P. JuricJRG MMQAIEC 29Electroacoustics Mr L. Madec, Mr H.GerlichIEEEElectroacoustics Mr A. WooQSDGQoS Development Group Mr D. MustillCommunication Mr C. Dvorak, EWM Mr J. Pomy, Bridging the standardization Gaps Mr J.J. Massima-LandjiTSAGSecurity, OAM, ICG-SAT Mr JY Monfort,FGNGN Mr C.Dvorak, FGNGN Mr P. CoverdaleITU-D Mr J.J. MassimaOthersFlagship Group QoS Mr D. Waturu
12 Structure of ITU-T Study Group 12 Questions, Rapporteurs and Editors. 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 ( s, 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.
13 Structure of ITU-T Study Group 12 Approval of Recommendations. Alternative Approval Process (AAP):For technical RecommendationsOnce 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 implicationsInitiated at an SG or WP meeting and completed, for final approval, at the subsequent SG meeting (Res. 1)Konzernentwicklung
14 Structure of ITU-T Study Group 12 AAP Sequence. ApprovedLC4 weeks(a)3 weeksApproved4(b)SG orEditedDirector'sDirector'sSG(c)WPtextannouncementannouncementMeetingmeetingfor LCand posting(7)and posting(6)(1)(2)for LCCommentAR(a)(b)(5)(3)resolution3 weeksApproved911(b)(a)EditedDirector'sDirector'stextannouncementnotificationfor ARand postingand publicationLC: Last Call(8)for AR(see Rec. A.11)AR: Additional Review(10)(12)TGSee Figure 1 (Rec. A.8)Konzernentwicklung
15 Structure of ITU-T Study Group 12 Meeting 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.Konzernentwicklung
16 Structure of ITU-T Study Group 12 Further information. Visit for more information.
17 Overview Structure of ITU-T Study Group 12 Quality assessment and prediction for voice servicesQuality assessment and predictionTaxonomy of prediction modelsE-model for NB and WB networksKonzernentwicklung
18 Quality Assessment and Prediction Voice services. Linguist.Backgr.AttitudeEmotionsExperi-enceMotivation,GoalsUser FactorsTransmissionSystemSubjective Quality JudgmentSystemParametersModelEstimated Quality IndexOur focus: Methods for assessing narrow-band and wideband speech, but also video quality
19 Quality Assessment and Prediction Quality aspects of transmitted speech. Quality of ServiceServiceFactorsContextualSpeech Communication FactorsQuality:Result of judgment of theperceived composition ofan entity with respectto its desired composition.(Jekosch, 2005)Quality of Service (Rec. E.800)Quality of ExperienceVoice TransmissionQualityEase of CommunicationConversation EffectivenessCommunication EfficiencyEconomical BenefitService EfficiencyUserFactorsUsabilityUtilityAcceptabilityUserSatisfactionQuality of Experience(Möller, 2000)Konzernentwicklung
20 Quality Assessment and Prediction Taxonomy of prediction models. Input information:Signalsone or two signalsacoustic or electricParametersProtocol informationMeasurement of input information:OnlineOfflineEstimationOutput information:Listening-onlyintegral qualityquality featuresConversationalTalking-onlyApplication area:PlanningSet-up and optimizationMonitoringNetwork type:Narrow-bandWidebandKonzernentwicklung
21 Quality Assessment and Prediction Taxonomy of prediction models: Narrow-band case. Output InformationListeningConversationOverallQualityFeat.Signals1, el.P.563Psychoac.MeasuresCCI (P.562)1, ac.2, el.P.862P.OLQA[Heute05]P.CQO?2, ac.[STI]P.OLQA?ProtocolMeas.P.VTQ?ParametersEstim.G.107NIEM (P.562)Input InformationKonzernentwicklung
22 Quality Assessment and Prediction Taxonomy of prediction models: Wideband case. Output InformationListeningConversationOverallQualityFeat.Signals1, el.Psychoac.Measures1, ac.2, el.P.862.2P.OLQA[Heute05]2, ac.[STI]P.OLQA?ProtocolMeas.ParametersEstim.WB-E- ModelInput InformationKonzernentwicklung
23 Quality Assessment and Prediction E-model for narrow-band networks. IP WANLinear distortion, delayBackgr. noise, acousticcouplingCodecJitter buffer,VADPacket lossTalker echo,listener echoCircuitnoiseBackgr. noise, acousticcoupling
24 Quality Assessment and Prediction E-model for narrow-band networks. IP WANPs, Ds,STMRSLR, RLR, TaIe, qduPplBplTELR, T,WEPL, TrNc, NforPr, Dr,LSTRImpairments SNR simultaneous delayed nonlin./timevar.Overall quality R = Ro - Is - Id - Ie,effEstimated user judgment MOS = f (R )
25 Quality Assessment and Prediction E-model extension for wideband networks. Ro,max = 129(Raake, 2006; Appendix II, ITU-T Rec. G.107, 2006)
26 Quality Assessment and Prediction E-model extension for wideband networks. Ref.Operating rate kbit/sIe,wb valueG.722641356204831G.722.1322419G.722.223.85823.05119.85318.25515.85714.251012.658.85266.641G.71136G.7281643G.72946G.729A + VAD47IS-54GSM 06.10, FRGSM 06.60, EFR12.2G.723.15.3556.351Ro,max = 129AMR-WB (23.05)AMR-WB (6.6)(Raake, 2006;Möller et al., 2006)
27 Thanks to Jean-Yves Monfort (ITU-T SG12 Chairman) for providing the description of Study Group 12. Thank you for your attention. Visit for more information.