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© 2006 Cisco Systems, Inc. All rights reserved. 1
Horváth Róbert
Mérnök tanácsadó
rohorvat@cisco.com
The Converging Cable Network -Docsis 3.0
© 2006 Cisco Systems, Inc. All rights reserved. 2
Traditional STB
IP STB
Internet
Mobile
21st Century Video Delivery Requirements� Any Content� Any Device� Any Location� Any Time
Broadcast TV
QAM
Broadband
3G/4G Wireless
On-Demand TV
Games and
Music
Online Video
� More Content Sources� More Content Destinations� More Access Networks
© 2006 Cisco Systems, Inc. All rights reserved. 3
Worldwide IPTV Deployments
Carrier Country IPTV Subs Broadband Subs
1 Iliad (Free) France 2,170,000 2.77 Million
2 France Telecom France 975,000 6.90 Million
3 PCCW Hong Kong 818,000 1.18 Million
4 Neuf Cegetel France 600,000 3.12 Million
5 Telefonica Spain 469,067 4.34 Million
6 Chunghwa Telecom Taiwan 358,000 4.07 Million
7 China Telecom China 310,000 35.1 Million
8 Belgacom Belgium 249,434 1.20 Million
9 TeliaSonera Sweden 216,000 1.03 Million
10 Fastweb Italy 170,000 1.25 Million
From Light Reading Report “Top Ten IPTV Carriers” is sued Jan 14, 2008Verizon FiOS is not included since its broadcast cha nnels are not delivered via IPTV
4 of top 5, 7 of top 10 IPTV deployments are in Europe
© 2006 Cisco Systems, Inc. All rights reserved. 4
The Challenges & the MSO ToolkitB
andw
idth
Driv
e Unlimited Content
HD Expansion
Content Personalization
� Fiber Node Splits
� 1GHz Plant Upgrade
� Analog Reclamation
� Switched Video
� QAM Sharing
� H264 Video Encoding
Anyone
Anywhere
Any Device
Any Content
� IPTV over DOCSIS
� Converged network
Con
verg
ence
Driv
e
© 2006 Cisco Systems, Inc. All rights reserved. 5
Digital Broadcast and Digital Simulcast
DNCS
Business Management
System HFC
Headend Hub
IP
DATA Control
IPG
BFSRF
Mux/Splicer
EAS
Satellite
Off the Air
IRT/RTE
MuxSplicer
Local Contents
ADs
QAMs
TED
© 2006 Cisco Systems, Inc. All rights reserved. 6
Switched Digital Video
Switched Channels Everyone could get
their own special channels: increased
appeal of overall package to ALL
subscribers
Broadcast Channels
Next 10
5-10 Viewers
Next 30
1-5 Viewers Next 200+
< 1Viewer
Typical Viewership at a Node
Top 4
>30 Viewers
Aud
ienc
e
Broadcast Channels
Current Analog & Digital Broadcast Approach
Only the most popular channels are offered due
to capacity constraintsUnused
Capacity
SDV: Paradigm Shift from Production to Consumption Model
“The Long Tail”
SDV opens more bandwidth capacity because NOT every
channel is delivered at the same time
© 2006 Cisco Systems, Inc. All rights reserved. 7
How Does Switched Digital Video Work?
Headend
Headend Hub
Today’s Broadcast System
Our Switched Digital Video (SDV) System
Service Group
Service Group
All programs are broadcast to all subscribers all the time
Programs are transmitted to a service group only when a subscriber in that group is actively watching them
SDV sends programs to subscribers only in areas whe re programs are being requested in real-time
Hub
© 2006 Cisco Systems, Inc. All rights reserved. 8
Switched Digital Video
DNCS
Business Management
SystemHFC
TED
Headend Hub
IP
DATA Control
ADs
Groomer/SplicerSDV Contents
Bulk Encryptor
SDV Svr
IPG
BFSRF
QAMs
QPSK
© 2006 Cisco Systems, Inc. All rights reserved. 9
Video on Demand
DNCS
Business Management
System
Asset Management
System
VOD Server
HFC
Content Catcher
TED
App Server
Headend Hub
ISA
IP
RTE
DATA Control
QAMs
QPSK
© 2006 Cisco Systems, Inc. All rights reserved. 10
Control Plane: Session & Resource Management
Switching Admission Control Resource Allocation
Session Signaling
Handles session signaling from the client
-- VoD session request
-- SDV channel change
Request session resources from various resource manager
-- QAM, Encryption
Normally application specific
-- VOD SM, SDV SM
Session Manager Edge Resource Manager
Manages resources
-- QAM, encryption, streaming, storage
-- Admission control
-- Resource sharing
Application agnostic
CCP/IGMP RTSP/GQI RTSP
© 2006 Cisco Systems, Inc. All rights reserved. 11
Universal QAM and QAM Sharing
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.00
11.00
12.00
13.00
14.00
15.00
16.00
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
0 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12
Time of Day
QA
M D
S C
hann
els
HSD/IPTV
VOD
SDV
Applications Combined
Example Serving Group
Utilization without QAM Sharing vs.
With QAM Sharing
13
HeadRoom
12+1
13
WithoutSharing
WithSharing
19% QAM DS Channels savings with QAM Sharing (16 vs. 13)
• = Peak Usage
7+1
43+1
HeadRoom
HeadRoom
16
© 2006 Cisco Systems, Inc. All rights reserved. 12
Switching in IPTV over DOCSIS
Video Source
Video Source CMTS
Static Multicast
Dynamic Multicast
Service Group
Service Group
Limited number of channels, especially for 4x4 CM
RF spanning may provide some cost benefits
Bandwidth efficient
Need smaller service group to really benefit
CMTS
© 2006 Cisco Systems, Inc. All rights reserved. 13
Video over DOCSIS 3.0 – truly converged network
DOCSIS Evolution New Functionality
Ubiquitous IP Video Device
Video Mosaic
Fast Channel Change
Connected home
QAMQAMQAMQAMQAMQAMQAM
DOCSIS 3.0
• Bonded Channel
• Enhanced Multicast
DOCSISMAC
ETH
US
IPM-CMTSEQAM
DEPI
DTI
DOCSIS M-CMTS
• Universal QAM
• Lower QAM cost
© 2006 Cisco Systems, Inc. All rights reserved. 14
DOCSIS Last Mile Architecture
DTCC
WAN
WAN
Wideband SPA GE
uBR10K
MC5x20 LinecardMC5x20 LinecardMC5x20 Linecard
DTI Server
EQAMWideband
CM
Legacy CM
Upstream
Downstream
CM Choice: WCM300 (8x1), DPC3000 (4x4)
EQAM Choice: RFGW-1, RFGW-10
Spectrum design needed based on CM selection
© 2006 Cisco Systems, Inc. All rights reserved. 15
HFCNetwork
IPTV over DOCSIS Control Plane
PCMM
PCMM
RSVP IGMP
CiscoCMTS
CableModem
Policy Server
VoD Server or Linear source
STB
VoD Session Manager or SDV Session Manager
IGMP RSVP/IGMP PCMM
Switching Admission Control Policy Control
© 2006 Cisco Systems, Inc. All rights reserved. 16
M-CMTS
Making the Transition to Cable IPTV
STB
VoIP
Linear VideoNiche Programming
XoD, nPVR
Cable Modem
Router
PacketCable
HSD
On Demand
VoD
PersonalChannels
PhoneCMTSPacket Shelf
Linear TV
Broadcast/EdgeQAMs
© 2006 Cisco Systems, Inc. All rights reserved. 17
M-CMTS
Making the Transition to Cable IPTV
VoIP
Linear VideoNiche Programming
XoD, nPVR
Router
PacketCable
HSD
On Demand
VoD
PersonalChannels
PhoneCMTSPacket Shelf
Linear TV
Broadcast/EdgeQAMs
IP STBCable Modem
© 2006 Cisco Systems, Inc. All rights reserved. 18
Future #1 – Tiers w/Resource Mgmt
Forward Path (Downstream)
85 150 200 250 300 350 400 450 500 550 600 650 700 750 800 860
Ana
log
TV
(Ban
d III
)
FM
Rad
io
Dig
ital
Bro
adca
st
SDV VOD
DO
CS
IS3.
0
The next thing
IPTVDOCSIS
Frequency Tiers
Analogue TierBroadcast Digital Tier
HSD TierSwitched Digital Tier
VOD TierIPTV DOCSIS Tier
“The Next Thing” Tier
EdgeResource Mgr
© 2006 Cisco Systems, Inc. All rights reserved. 19
Future #1 – Tiers w/Resource Mgmt
Forward Path (Downstream)
85 150 200 250 300 350 400 450 500 550 600 650 700 750 800 860
Ana
log
TV
(Ban
d III
)
FM
Rad
io
Dig
ital
Bro
adca
st
SDV VOD
DO
CS
IS3.
0
The next thing
IPTVDOCSISBypass
Frequency Tiers
Analogue TierBroadcast Digital Tier
HSD TierSwitched Digital Tier
VOD TierIPTV DOCSIS Tier
“The Next Thing” Tier
EdgeResource Mgr
© 2006 Cisco Systems, Inc. All rights reserved. 20
Future #2 – Channel Bonding
Forward Path (Downstream)
85 150 200 250 300 350 400 450 500 550 600 650 700 750 800 860
Ana
log
TV
(Ban
d III
)
FM
Rad
io
N-channel bonded DOCSISBroadcast video, VOD,
HSD, VoIP, nPVR
N-channel bonded DOCSIS 3.0 IP pipe carrying all services
2008: N= 3, 4, 82015: N= ?
© 2006 Cisco Systems, Inc. All rights reserved. 21
Future #2 – Channel Bonding
Forward Path (Downstream)
85 150 200 250 300 350 400 450 500 550 600 650 700 750 800 860
Ana
log
TV
(Ban
d III
)
FM
Rad
io
N-channel bonded DOCSISBroadcast video, VOD,
HSD, VoIP, nPVR
© 2006 Cisco Systems, Inc. All rights reserved. 22
A look inside the pipe
0 Mbps
300-5000 Mbps
Voice Streams
All remaining bandwidth supports data services
Unified control point for:Authentication, QoS, Network Mgmt, Monitoring
HD MPEG-4 VBR StreamsSDV-VOD-VideoConference
© 2006 Cisco Systems, Inc. All rights reserved. 23
Cable IPTV Benefits
� VBR Video Services
� Fat Pipes
� Ease of Deployment in Multi-Phy Systems
� One Network - Operational Efficiencies
� Single Control Point for Service Control, Acceleration
� Reduced STB Cost
� End-to-End IP Connectivity
� Easier Access to Multiple/Varied CPE Devices
© 2006 Cisco Systems, Inc. All rights reserved. 24
� Cable is becoming a converged network-- Universal edge resource and management
-- Linear and on-demand video service convergence
-- IP provides a converged transport for all services
� DOCSIS and IP emerges as a new transport for video-- With enhanced experience and bandwidth efficiency
� Switched video delivery provides bandwidth efficiency-- Both SDV and VDOC provide such capabilities
Summary
© 2006 Cisco Systems, Inc. All rights reserved. 25
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