Proposal for the Validation of the Video Quality of IPTV ServiceEng. Luis Enrique Conde del Oso.luis.conde@etecsa.cuTelephone: 537 2666825 Mobile 53 52884472

Background.Current scenarioof Telecom Carriers Obsolescence of TDM Technology.

Requirements for new services and increase of the current services. - Fixed telephone service growth. - Mobile service growth - Wide development of data services. - Introduction of novel services such as IPTV.Proposal of Development Development of Services on NGN networks with NAM (GIE). Optimization of National Transport Network IP/MPLS. Designs and implementation of Local and Regional Metro Networks. Introduction of the objective quality validation of services in real time (and its extension to quality profile of telecommunications network). Beginning of the scheduled development

Different levels of a NGN Network.BRASPEIP/MPLSARBRASPEARMETROREGIONALService PoPService PoPMETROPROVINCIALEth/SDHSource: VPDT. ETECSA.VoDVoDVoD

Technical Requirements for Packet Transport NetworkInterfaces:Level of PTN Equipment:Characteristics:

Technical Requirements for Packet Transport NetworkTransport:

Technical Requirements for Packet Transport NetworkQuality of ServiceCharacteristics Carrier ClassSynchronization

Technical Requirements for Packet Transport NetworkStandards for NGN EquipmentMinimal necessary interfaces

IPTV Service proposed at the different levels of a NGN Network.BRASPEIP/MPLSARBRASPEARMETROREGIONALService PoPService PoPMETROPROVINCIALEth/SDHSource: VPDT. ETECSA.Platform of IPTVVoDVoDVoD

QoE and QoS.SLASLASLAHuman Vision ConstraintsPerceived Quality (QoE)STB influenceQuality dependence of the ServiceNetwork Quality (QoS)Source: VPDT. ETECSA.

Proposal of validation points of IPTV quality service. Source: VPDT. ETECSA.

State of the art of validation Metrics for video quality.

Windows (GUI) of FreeProbe (Metric T-Factor) and FreeProbe (Metric MDI).Fuente Telecom Italia - VPDT. ETECSA.

Pilot Test using FreeProbe (T-Factor), a simulation of Orange solution.Source: VPDT. ETECSA.

IPTV Service Test Model applied at ETECSA laboratories.Source: VPDT. ETECSA.

ETECSAsDomestic Intranet Test Results of FreeProbe (Metric MDI). ETECSAs Intranet vs BPL.VLAN QoSSource: VPDT. ETECSA.VLAN 10VLAN 20VLAN 30Best effort

Tests using NetDisturb in the testing model and classification of the subjective quality experienced by the end userVideo ServerNetDisturbFuente VPDT. ETECSA.Source: Telecom Italia VPDT ETECSA.

Source: Telecom Italia - VPDT. ETECSA. Test results done in the testing model (Channel SD to 4 Mbps)

Original video VS Original video with 1% Packet Loss Rate. Original Video.Video with 1% Packet Loss Rate.

ServPOP 2DWDMServPOP 4Serv POP 1ServPOP 3Pseudo ringEthernetPseudo ringEthernetPseudo ringEthernetCUBSource: Telecom Italia - VPDT. ETECSA.FreeProbe ServerMeasurement pointData collectIPTV Head EndCentralization of QoE Validation with FreeProbe to substitute solutions with Shadow Router. (Cisco, Tektronix, JDSU)Metric MDIMetric MDIMetric T-FactorSNMPSNMPSNMP

Quality Profile on networks, according to the following ITU-T Recommendations G.1050, TIA-921 and ITU-T Y.1541 Source: UIT-T.Fuente Spirent.DSL Forum's WT-126

SD. 1 paq./perd cada 30 minutos.(MLR=0.004 paq/seg)

HD 1paq./perd. cada 4 horas(MLR=0.0005 paq/seg)Source: DSL Forum's WT-126

ConclusionsThe introduction of Ethernet Metro networks in ETECSA constitutes the main core for the development of ETECSAs target network guarantying the growing requested by the MIC in the triennium, as well as the incorporation of new services like IPTV.

The experiences on IPTV services validation in Telecom Italia using Free Probe has been the starting point of valuable research experiences carried out in ETECSA together with the development and programming of an IPTV service platform used in this telecom company. It was done as from the study of the VideoLAN software code source which reduced the cost of research stage.

The proposal of using Free Probe to validate the quality profile of ETECSAs IP network makes it an important alternative for the expensive purchase of Shadow Router dedicated to this unique function that can be extended to other services in real time like VoIP with an adaptation of the MDI metric.

The fulfillment of the recommendations made at the DSL Forum WT-126 is the base of IPTV quality service in SD and HD formats, for which networks must meet the quality profile according to UIT-T Y 1541.

The application of probes with T-Factor metric can be enlarged to quality validation of TDT and 3G mobile systems.

In line with the world1994 - 201016 Anniversary