ITU-T G.1070-2007(E) Opinion model for video-telephony applications

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1、InternationalTelecommunicationUnionITU-TG.1070TELECOMMUNICATION(04/2007)STANDARDIZATIONSECTOROFITUSERIESG:TRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSQualityofserviceandperformance–Genericanduser-relatedaspectsOpinionmodelforvideo-telephonya

2、pplicationsITU-TRecommendationG.1070ITU-TG-SERIESRECOMMENDATIONSTRANSMISSIONSYSTEMSANDMEDIA,DIGITALSYSTEMSANDNETWORKSINTERNATIONALTELEPHONECONNECTIONSANDCIRCUITSG.100–G.199GENERALCHARACTERISTICSCOMMONTOALLANALOGUECARRIER-G.200–G.299TRANSMISSIONSYSTEM

3、SINDIVIDUALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONEG.300–G.399SYSTEMSONMETALLICLINESGENERALCHARACTERISTICSOFINTERNATIONALCARRIERTELEPHONESYSTEMSG.400–G.449ONRADIO-RELAYORSATELLITELINKSANDINTERCONNECTIONWITHMETALLICLINESCOORDINATIONOFRADIOTELEPH

4、ONYANDLINETELEPHONYG.450–G.499TRANSMISSIONMEDIAANDOPTICALSYSTEMSCHARACTERISTICSG.600–G.699DIGITALTERMINALEQUIPMENTSG.700–G.799DIGITALNETWORKSG.800–G.899DIGITALSECTIONSANDDIGITALLINESYSTEMG.900–G.999QUALITYOFSERVICEANDPERFORMANCE–GENERICANDUSER-RELATE

5、DG.1000–G.1999ASPECTSTRANSMISSIONMEDIACHARACTERISTICSG.6000–G.6999DATAOVERTRANSPORT–GENERICASPECTSG.7000–G.7999PACKETOVERTRANSPORTASPECTSG.8000–G.8999ACCESSNETWORKSG.9000–G.9999Forfurtherdetails,pleaserefertothelistofITU-TRecommendations.ITU-TRecomme

6、ndationG.1070Opinionmodelforvideo-telephonyapplicationsSummaryITU-TRecommendationG.1070proposesanalgorithmthatestimatesvideophonequalitytotheQoE/QoSplanners.ThismodelcanbeusedbyQoE/QoSplannerstohelpensurethatuserswillbesatisfiedwithend-to-endserviceq

7、uality.Actuallytheywanttoavoidunder-engineering.Theoutputsfromthemodelaremultimediaqualityconsideringtheinteractivequality.TheapplicationofthisRecommendationislimitedtoQoE/QoSplanning.Otherapplicationssuchasqualitybenchmarkingandmonitoringareoutsidet

8、hescopeofthisRecommendation.SourceITU-TRecommendationG.1070wasapprovedon22April2007byITU-TStudyGroup12(2005-2008)undertheITU-TRecommendationA.8procedure.KeywordsMultimedia,MOS,opinionmodel,QoE,QoS,qualityplanning,subjectivequality,videotelephony.ITU-