Diapositiva 1

1
Proposal for the Validation of the Video Quality
of IPTV Service
Eng. Luis Enrique Conde del Oso. luis.conde_at_etecsa
.cu Telephone [phone] Mobile [phone]
2
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
BRAS
PE
AR
BRAS
PE
AR
VoD
VoD
Service PoP
Service PoP
METRO REGIONAL
VoD
METRO PROVINCIAL
Eth/SDH
Source VPDT. ETECSA.
4
Technical Requirements for Packet Transport
Network
Level of PTN Equipment
Characteristics
Interfaces
5
Technical Requirements for Packet Transport
Network
Transport
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
BRAS
PE
AR
BRAS
PE
AR
VoD
Platform of IPTV
VoD
Service PoP
Service PoP
METRO REGIONAL
VoD
METRO PROVINCIAL
Eth/SDH
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.

Source VPDT. ETECSA.
11

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

12

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

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). ETECSAs
  Intranet vs BPL.

ETECSAs Domestic Intranet
VLAN QoS
Best effort
VLAN 10
VLAN 20
VLAN 30
Source VPDT. ETECSA.
16

• 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

• 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.

• Video with 1 Packet Loss Rate.

• Original Video.

19

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

FreeProbe Server
SNMP
SNMP
SNMP
Metric MDI
Pseudo ring Ethernet
Serv POP 2
Serv POP 1
DWDM
Pseudo ring Ethernet
Serv POP 4
Serv POP 3
CUB
Pseudo ring Ethernet
IPTV Head End
Metric MDI
Measurement point
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.
• (MLR0.004 paq/seg)
• HD 1paq./perd. cada 4 horas
• (MLR0.0005 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 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.
22
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