Triple play service architecture
(Focus Group FS VDSL)
Stéphane Py – France Télécom R&D
SG16/QB Associate rapporteur
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D1 - 09/04/2002
Agenda
FS VDSL overview
Service definition provided by the operator group
System Architecture and Customer Premises Equipment
overview
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FS-VDSL Overview
Launched in Paris, July 2000
Target : end-to-end video-centric platform specification to be
published in May 2002
Scope includes architecture, video elements, protocols, customer
equipment functionality, VDSL transceivers, operations
Successful verification of specifications via international system
demonstrators hosted by operators
Leverage end-to-end interoperability
FS-VDSL Committee has joined ITU in 2002 as a focus group
attached to SG16
Despite the name, FS VDSL addresses all DSL technologies
capable of supporting video delivery (ADSL, ADSL2+, VDSL)
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D3 - 09/04/2002
FS-VDSL overview
Operators involved
Bell Canada
SBC Qwest
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Telenor
Telia
BT
KPN Deutsche Telekom
Eircom
Belgacom
Swisscom
France Telecom
Telecom Italia
Telefonica
Bezeq
Korea Telecom
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D4 - 09/04/2002
FS-VDSL overview
Working groups
 Operator Requirements



Services requirements and infrastructure deployment issues
Addresses security of digital content
Published by FS VDSL in 2002 and adopted by SG16 as a supplement in June 2003
System Architecture and Customer Premises Equipment
End-to-end platform architecture and protocols
Customer equipment configurations and connectivity functions
Published by FS VDSL in 2002, adopted by SG16 in June 2003, currently in AAP (H610)
OAM & P
Operational aspects taking into account existing OSS platforms
Published by FS VDSL in 2002, adopted by SG16 in June 2003, currently in AAP (H611)
Physical Layer Specification
Promoting VDSL transceiver interoperability
Published by FS VDSL in 2002, transferred to DSL Forum
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D5 - 09/04/2002
Service definition
Service definition has been provided by the operator group
Three service category :
TV based services
PC based services
Voice services
Various combinations of theses elementary services can be
offered
Content security (Access control, content encryption,
conditional access and digital right management) identified as
key to deliver these services
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D6 - 09/04/2002
Service definition
TV based services
Broadcast TV and audio, up to three channels
HDTV
Pay per view
Video on demand
Search engine
Video control : pause, fast forward
Electronic Program Guide
Picture in Picture, Picture in Browser
PVR
Interactive TV : browsing, mail, chat …
Video quality equivalent to cable or satellite and additional
services
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D7 - 09/04/2002
Service definition
PC based and Voice services
High speed Internet access including email …
Live TV using « PC » technologies
Video on demand
Video conferencing
Interactive games
Need to support connection sharing
Bit rate for the Internet access up to 3Mbits/s for residential
Bit rates for video in the range 300-750 kbits/s
Voice service description is light, based on derived voice
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D8 - 09/04/2002
System Architecture and CPE
A specific terminology has been introduced to avoid confusion
between modem, gateways, residential gateways ….
The SA and CPE group has defined
End-to-end protocols to support basic connectivity and basic function
The use of an hybrid modem performing both L2 and L3 functions
CPE and network behaviors to support access to several IP networks
Main choices
Use of ATM as layer 2 over DSL
Core network flexibility
Distributed and centralized environment for the CPE
Consideration of an « Ethernet-like » home network
 No selection of an home network technology
Transport of the video is coding-independent
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D9 - 09/04/2002
System Architecture and CPE
Reference model
TCN
R
U-R2
U- C2
U-R
App
V
OLT
Service Nodes
ONU
U-C
R/S
FPD
Digital
S/R
Broadcast
VTU -C
OTU
OTU -C
-C
VTU - C
OTU
OTU-C
-C
Network
Digital
App
FPD
Customer
Premise
Distribution
App
App
FPD
VTP/D
PS
Loop
plant
PS
Interactive
VTU -C
OTU -R
Network
ODN
OTU
OTU-C
-C
VTU -C
OTU
OTU-C
-C
VTU-C
OTU
OTU -C
-C
IWCN
AV network
Internet
Network
FPD
POTS/ISDNR
Voice
POTS/ISDNc
Network
Pots/
TE
Pots/
ISDN
ISDN
M
EMS
Q
Management
Network
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D10 - 09/04/2002
System Architecture and CPE
Possible networks
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D11 - 09/04/2002
System Architecture and CPE
IP networks
If the services are provided by different service operators,
each one will need IP connectivity with the device
accesing the service on the user side
Residential
private address space
Service operator public
or private address space
Service
operator #1
PC
IP
device
PC
Service
operator #2
Residential
network
VTP/D
ONU
OLT
STB
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Service
operator #3
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D12 - 09/04/2002
Conclusion
There is not only one definition of triple play
The exact set of service will differ from one country to another
H610 defines a set of functions and tools to help the setup of triple
play services
H610 is
Video centric
Considering DSL technologies, mobile network are out of the scope
Service interactions are not considered in detail
SG16/QB plans to investigate in this direction
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D13 - 09/04/2002