Proposal for the Validation of the Video Quality of IPTV Service Eng. Luis Enrique Conde del Oso. luis.conde@etecsa.cu Telephone: 537 2666825 Mobile 53.

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

Eng. 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.

BRAS PE

IP/MPLS

AR BRAS PEAR

METROREGIONAL

Service PoPService PoP

METROPROVINCIAL

ADMADM

ADMADM

ADMADM

Eth/SDH

Source: VPDT. ETECSA.

E1

STMn

FE

GE

VoDVoD

VoD

• Technical Requirements for Packet Transport Network

Interfaces:

Level of PTN Equipment:

Characteristics:

• Technical Requirements for Packet Transport Network

Transport:

• Technical Requirements for Packet Transport Network

Quality of Service

Characteristics Carrier Class

Synchronization

• Technical Requirements for Packet Transport Network

Standards for NGN Equipment

Minimal necessary interfaces

• IPTV Service proposed at the different levels of a NGN Network.

BRAS PE

IP/MPLS

AR BRAS PEAR

METROREGIONAL

Service PoPService PoP

METROPROVINCIAL

ADMADM

ADMADM

ADMADM

Eth/SDH

Source: VPDT. ETECSA.

E1

STMn

FE

GE

Platform of IPTVVoDVoD

VoD

• QoE and QoS.

SLA SLA SLA

Human Vision Constraints

Perceived Quality (QoE)

STB influence

Quality dependence of

the Service

Network Quality (QoS)Source: VPDT. ETECSA.

• Proposal of validation points of IPTV quality service.

ServPOP 2

DWDMServ

POP 4

Serv POP 1

ServPOP 3

Pseudo ringEthernet

Pseudo anilloEthernet

Pseudo ringEthernet

Punto 3Validación

Punto 2Validación

IPTV

Head End

Punto 1Validación

(Encrypted Signal)

(Encrypted Signal)

(No Encrypted signal)

Source: VPDT. ETECSA.

•State of the art of validation Metrics for video quality.

Métricas(VQM)

MétricasSubjetivas

BT.500.11 (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).Métricas

Objetivas

Ref. Completa.Ref. Reducida.Sin Referencia.

Métricas de Imágenes

Análisis de la Informaciónvisual contenida.

• VHS Metric.(Aspectos de la visión Humana)

Métricas Datos

Análisis de Videos Decodificados.

• MSE• PSNR(Evaluación de Paquetes)

Métricas 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.

Correlación

FreeProbe with T- Factor Metric

• Windows (GUI) of FreeProbe (Metric T-Factor) and FreeProbe (Metric MDI).

Fuente Telecom Italia - VPDT. ETECSA.FreeProbe with MDI Metric

•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.

ETECSA’sDomestic Intranet

• Test Results of FreeProbe (Metric MDI). ETECSA’s Intranet vs BPL.

VLAN QoS

Source: VPDT. ETECSA.

VLAN 10

VLAN 20

VLAN 30

Best effort

• 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.

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 2

DWDM

ServPOP 4

Serv POP 1

ServPOP 3

Pseudo ringEthernet

Pseudo ringEthernet

Pseudo ringEthernet

CUB

Source: Telecom Italia - VPDT. ETECSA.

FreeProbe

FreeProbe Server

Measurement point

Data collect

FreeProbe

IPTV

Head End

FreeProbe

•Centralization of QoE Validation with FreeProbe to substitute solutions with Shadow Router. (Cisco, Tektronix, JDSU)

Metric MDI

Metric MDI

Metric T-Factor

SNMPSNMP

SNMP

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 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.

In line with the world…1994 - 2010

16 Anniversary