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“Proposal for the Validation of the Video Quality of IPTV Service”

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Presentation on theme: "“Proposal for the Validation of the Video Quality of IPTV Service”"— Presentation transcript:

1 “Proposal for the Validation of the Video Quality of IPTV Service”
Eng. Luis Enrique Conde del Oso. Telephone: Mobile

2 Proposal of Development Beginning of the scheduled development
Background. 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. Current scenario of Telecom Carriers 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). Proposal of Development Beginning of the scheduled development

3 Different levels of a NGN Network.
IP/MPLS AR BRAS PE AR BRAS PE VoD VoD Service PoP Service PoP METRO REGIONAL VoD ADM METRO PROVINCIAL E1 STMn FE GE ADM Eth/SDH ADM Source: VPDT. ETECSA.

4 Technical Requirements for Packet Transport Network
Level of PTN Equipment: Characteristics: Interfaces:

5 Technical Requirements for Packet Transport Network

6 Technical Requirements for Packet Transport Network
Quality of Service Characteristics Carrier Class Synchronization

7 Technical Requirements for Packet Transport Network
Standards for NGN Equipment Minimal necessary interfaces

8 IPTV Service proposed at the different levels of a NGN Network.
IP/MPLS AR BRAS PE AR BRAS PE VoD Platform of IPTV VoD Service PoP Service PoP METRO REGIONAL VoD ADM METRO PROVINCIAL E1 STMn FE GE ADM Eth/SDH ADM Source: VPDT. ETECSA.

9 QoE and QoS. Human Vision Constraints
Perceived Quality (QoE) STB influence Quality dependence of the Service SLA SLA SLA Network Quality (QoS) Source: VPDT. ETECSA.

10 Proposal of validation points of IPTV quality service.
POP 2 DWDM POP 4 POP 1 POP 3 Pseudo ring Ethernet Pseudo anillo Punto 3 Validación Punto 2 IPTV Head End Punto 1 (Encrypted Signal) (No Encrypted signal) Source: VPDT. ETECSA.

11 State of the art of validation Metrics for video quality.
MOS Métricas (VQM) Subjetivas BT (Imágenes de TV). P.910 (Aplic. de Multimedia), Calidad de video. P.911 (Aplic. de Multimedia), Calidad Audiovisual. Comparación Implícita (DSCQS). Comparación Explícita (DSIS) Valoraciones Absolutas (SSCQE) Valoraciones con Categoría Absoluta (ACR). ITU-T Correlación Métricas Objetivas Ref. Completa. Ref. Reducida. Sin Referencia. Métricas de Imágenes Análisis de la Información visual contenida. VHS Metric. (Aspectos de la visión Humana) Datos Análisis de Videos Decodificados. MSE PSNR (Evaluación de Paquetes) Flujos de Video T- Factor (Profunda Inspección del flujo del Video (TS y UDP) Depende del Codec y muestra el impacto de los disturbios de la Red en las pérdidas y su propagación (espacial y temporal). MDI (Ligera Inspección del flujo del Video (TS y UDP) Independiente del Codec Red IP.

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

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

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

15 Test Results of FreeProbe (Metric MDI). ETECSA’s Intranet vs BPL.
Domestic Intranet VLAN QoS Best effort VLAN 10 VLAN 20 VLAN 30 Source: VPDT. ETECSA.

16 Source: Telecom Italia – VPDT ETECSA.
Tests using NetDisturb in the testing model and classification of the subjective quality experienced by the end user Video Server NetDisturb Fuente VPDT. ETECSA. Source: Telecom Italia – VPDT ETECSA.

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

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

19 Source: Telecom Italia - VPDT. ETECSA.
Centralization of QoE Validation with FreeProbe to substitute solutions with Shadow Router. (Cisco, Tektronix, JDSU) FreeProbe Server SNMP FreeProbe SNMP SNMP Metric MDI Serv POP 1 Serv POP 2 Pseudo ring Ethernet Pseudo ring Ethernet DWDM Serv POP 3 Serv POP 4 CUB Pseudo ring Ethernet IPTV Head End Metric MDI Measurement point FreeProbe FreeProbe Data collect Source: Telecom Italia - VPDT. ETECSA. Metric T-Factor

20 Quality Profile on networks, according to the following ITU-T Recommendations G.1050, TIA-921 and ITU-T Y.1541 Source: UIT-T. DSL Forum's WT-126 SD. 1 paq./perd cada 30 minutos. (MLR=0.004 paq/seg) HD 1paq./perd. cada 4 horas (MLR= paq/seg) Source: DSL Forum's WT-126 Fuente Spirent.

21 Conclusions The introduction of Ethernet Metro networks in ETECSA constitutes the main core for the development of ETECSA’s 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 ETECSA’s 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.

22 Thank you for your attention
16 Anniversary Thank you for your attention In line with the world…


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