International Telecommunication Union
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un
Full Service Deployment via TV
Broadband Networks System Evolution Based on MSO
Experiences and Requirements
Malcolm Taylor (ECB)
Luc Martens (tComLabs)
Dirk Jaeger (ECCA)
draft version
ITU-T Workshop All Star Network Access
Geneva, 2-4 June 2004
Outline
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ITU-T
o Introduction
o Evolution of cable communication
systems in European cable networks
o Experience with Euro-DOCSIS
o MSO requirements for future service
provision
03.06.2004
2
n
Introduction
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ITU-T
tComLabs
cooperation
Certification
testing on
behalf of
Certification
Board
03.06.2004
EuroCableLabs
Migration
ECCA
Euro-Cable
Certification Board Technical Committee
European Cable MSOs
Certification of
cable
communication
equipment (EuroDOCSIS, EuroPacketCable, ...)
Emerging
technologies and
standardisation
3
Euro-DOCSIS & DOCSIS
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ITU-T
o DOCSIS: Data Over Cable Service Interface
Specifications
• Standards
• DOCSIS 1.0: Data service over cable
• DOCSIS 1.1: QoS for multimedia services
• Euro-DOCSIS 1.x: European derivative
• Uniform, consistent, open, non-proprietary, multi-vendor
interoperable basis
o SCTE maintains DOCSIS 1.0 standard
o Access platform for other CableLabs standards
• PacketCable for Multimedia services
• OpenCable for iDTV services
ITU-T
Adapt DOCSIS to EuroDOCSIS
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American standard: DOCSIS
Data Over Cable Service
Interface Specification
Adaptation to
• Physical properties of European
CATV networks
• European frequency allocations
• Downstream Annex A of ITU-T J83
European standard: Euro-DOCSIS
03.06.2004
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Euro-DOCSIS Reference Architecture
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ITU-T
Operations Support
System
Cable Modem
OSS Interface
Termination System
(OSSI)
Network Side Interface
(CMTS-NSI)
Distribution
Cable Modem
Network
Termination System
TX
Network
Termination
Generic Headend Switch or
Backbone Transport Adapter
WAN
O/E
Node
RX
Demod
Customer
Premises
Equipment
Coax
Mod
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Cable
Modem
Fiber
Cable Modem
RF Interface
Cable Modem
CMTS
CPE Interface
RF Interface
(CMCI)
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Euro-DOCSIS versions
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ITU-T
• Euro-DOCSIS 1.0
• Lightweight standard for best-effort internet
• Euro-DOCSIS 1.1
• Offers QoS + enhanced security
• Uses SNMPv3 for management (security + authentication)
• Uses PKI (Public Key Infrastructure) for authentication and
security
• Basis for packet-based services such as VoIP over cable
• Euro-DOCSIS 2.0
• Advanced physical layer using Advanced-TDMA and S-CDMA
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ITU-T
Euro-DOCSIS
standardisation
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• Euro-DOCSIS 1.0, 1.1, and 2.0
are official annexes to the CableLabs
DOCSIS 1.0, 1.1, and 2.0 specifications
• (Euro-)DOCSIS specification
has been published as ETSI (European
Telecommunications Standards Institute)
and ITU specifications
03.06.2004
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Euro-PacketCable
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ITU-T
o Goals of Euro-PacketCable - IPCablecom*:
• Provide packet-based voice, video and other high-speed
multimedia services over the HFC network.
• Build on the QoS capabilities of Euro-DOCSIS.
• Design architecture that allows multiple vendors to
rapidly develop low-cost interoperable solutions to meet
time-to-market requirements.
• Scalable network for millions of subscribers.
• Use approved and widely adopted protocol standards.
* ITU name for PacketCable and Euro-PacketCable.
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Euro-PacketCable
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ITU-T
o Specifications based on PacketCable developed
by CableLabs
o Differences for Europe
• Handset interfaces
• Class features
• SS7 differences
• V5.2
• Electronic surveillance
• Root Certificate Authority
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Euro-PacketCable
Reference Architecture: Single Zone
ITU-T
MTA
Cable
Modem
CMTS
HFC access
network
(DOCSIS)
Embedded
MTA
OSS
Backoffice
Standalone
MTA
MTA
Cable
Modem
Embedded
03.06.2004 MTA
LDS
Managed IP Backbone
MTA
HFC access
network
(DOCSIS)
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PSTN
IPAT
Cable
Modem
n
Call Management
Server
Audio Server
Signaling Gateway
Media Gateway
Controller
CMTS
PSTN
Media Gateway
Cable
Modem
MTA
Standalone
MTA
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ITU-T
Euro-DOCSIS Large scale deployment
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o Capacity supported by today’s systems:
• 38 Mbps downstream
• 10.2 Mbps (v 1.1), 40.9 Mbps (v 2.0) upstream
o Service tiers provided by MSOs
• 64 kbps ... 4 Mbps downstream
• typically 128 kbps upstream
• volume-based, time-based usage limits
o Service take-up in some regions in Europe e.g.
Belgium
• 30% ... 40% of households with cable connection
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ITU-T
Euro-PacketCable Telephony over cable
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o First commercial deployments and plans
for commercial deployments
• Switzerland
• Sweden
• Belgium
• Germany
• others
o Trials in various European countries
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View into the future
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ITU-T
o (Euro-)DOCSIS service tiers offered
today are not sufficient for midterm
service planning
o 3 – 5 years requirements for downstream
bandwidth per user: 10 Mbps
o IP service penetration forecast
• 20 – 50 % medium term
• almost 100 % long term
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ITU-T
View into the future
(cont.)
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o TVoIP for VoD and video streaming
• will stimulate bandwidths demand
• will occupy the major portion of IP
bandwidth
o Traffic characteristic will change
• new statistical traffic models required
for maximum channel utilisation
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Summary
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ITU-T
o Euro-DOCSIS cable communication systems
have been evolved to support requirements of
European cable MSOs
o Robust system with large scale deployments
o Higher layer protocols for VoIP, etc. due to
commercially rolled out on top of Euro-DOCSIS
o Further evolution of system required to satisfy
MSO demands future service provision
03.06.2004
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