Post on 28-Dec-2015
Next-Generation CMTS Solutions:
Timing & Roadmaps
Tom Cloonan, Ph.D.CTO - Broadband Division
ARRIS International
June 2006
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▪ The roadmaps described in this talk are still evolving & subject to change.
▪ All CMTS & CM vendors participating in the DOCSIS® 3.0 standardization process are bound by the CableLabs® NDA agreement & are not permitted to discuss details of the DOCSIS 3.0 and DOCSIS 2.0b features.
A Few Quick Notes
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Agenda
▪ Introduction▪ M-CMTS & DOCSIS 3.0 History▪ Predictions: The Near Future
(2006-2009)▪ Predictions: The Distant Future
(2010-2011)▪ Conclusions
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▪ MSOs are planning for many changes in the future
▪ Let’s consider a few quick examples…
Introduction
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2005 2006 2007 2008 20091
10
100
1000
30 kbps
Avg Bandwidth per subscriber (kbps)
100 kbps
1 Mbps
Example of Subscriber BandwidthChanges Proposed by one MSO
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Example of CMTS Bandwidth Changes Proposed by one MSO
Shift from MPEG-delivered Video to DOCSIS-delivered IPTV
DOCSIS MAC
GigabitEthernet Switching
VoDServer
Broadcast Analog Video (45 programs = 45 channels)Broadcast Digital SDTV (200 programs = 20 QAMs = 1 Gbps) & Broadcast Digital HDTV (40 programs = 20 QAMs = 1 Gbps)
Narrowcast VoD & IPTV
(13.6 Gbps / 340 QAM)
IPMetroNtwk
RF
RF
RF
RF
D5EdgeQAM
D5EdgeQAM
D5EdgeQAM
D5EdgeQAM
IP Router
HSD & Voice(1 Gbps / 32 QAM
& 128 Up Channels) RFUSRCV
C4 M-CMTS
20KHHPHub
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Example of DOCSIS Upstream:DownstreamRatio Changes Proposed by one MSO
2005 2006 2007 2008 20090
2
4
6
8
10
12
14
16
18
20
Total # Downstreams/SG
Total # Upstreams/SG
Total # Ports for 4-Fiber Node Service Group
Begin Channel Bonding
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4
2
4
4
4
8
4
12
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Next-Generation Architectures Must Deliver Key Improvements to Permit MSOs to Evolve their HFC Networks
IPv4 – Address Management
• Complicated management due to limited available IP addresses
IPv6 – Address Management
• Simpler network operations and more IP devices per subscriber
Standard bandwidth
• Single channel limits the services that can be offered
Channel Bonded bandwidth
• Channel bonding increases usable bandwidth enabling new services
Fixed upstream / downstream ratio
• Capital invested in unused capacity as US/DS ratio changes
Flexible upstream / downstream ratio
• Align investment with revenue opportunity
Today
DOCSIS 2.0Next Generation Network Architecture
M-CMTS and DOCSIS 3.0
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Agenda
▪ Introduction▪ M-CMTS & DOCSIS 3.0 History▪ Predictions: The Near Future
(2006-2009)▪ Predictions: The Distant Future
(2010-2011)▪ Conclusions
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MSOs will be able to select from multiple DOCSIS architectures in the near future
▪ Integrated CMTS (I-CMTS)− Architecture has all required CMTS modules in one chassis− CMTS has the ability to grow downstreams separately from upstreams− Permits support for full redundancy within a single chassis− Offers simpler management (MSO manages only one network element)
▪ Modular CMTS (M-CMTS) − Architecture separates the downstream PHY (EdgeQAM) from the MAC
and upstream PHY− CMTS has the ability to grow downstreams separately from upstreams− Allows network elements from multiple vendors if desired− Permits sharing of EdgeQAMs for VoIP, Video, & Data services
▪ Some CMTS vendors will offer products supporting both types of architectures
▪ MSOs will be able to select the architecture that best suits their needs
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Edge Resource Mgr
Router/Switch
I-CMTS
VoDServer
SwitchedDigitalBCASTVideoMgr
CM MTA STB
SG #1 Forward Path
SG #1 Reverse Path
CM MTA STB
SG #2 Forward Path
SG #2 Reverse Path
HFC Network Topology based onthe Integrated CMTS (I-CMTS) Architecture
D5 EQAM
D5 EQAM
D5 EQAM
D5 EQAM
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Edge Resource Mgr
D5 EQAM
D5 EQAM
D5 EQAM
D5 EQAM
D5 EQAM
Router/Switch
M-CMTS
VoDServer
SwitchedDigitalBCASTVideoMgr D5 EQAM
CM MTA STB
SG #1 Forward Path
SG #1 Reverse Path
CM MTA STB
SG #2 Forward Path
SG #2 Reverse Path
HFC Network Topology based onthe Modular CMTS (M-CMTS) Architecture
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MSOs will also be able to select from many features in the DOCSIS 3.0 spec
▪ Increased downstream & upstream bandwidth per subscriber via Channel Bonding
▪ Larger IP address spaces with IPv6
▪ Improved multicast support
▪ DOCSIS theft of service security
▪ More VPN support
▪ Simpler and higher-capacity management systems
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Channel Bonding: The Primary Driver for DOCSIS 3.0
▪ Competition from DSL & FTTH is pushing MSOs to offer more bandwidth & capacity▪ Business services & other planned service offerings (ex: fast video downloads, IPTV, etc.) are
requiring MSOs to offer more bandwidth & capacity to more subs
Channel Bonding
- Pre-Standard (ex: ARRIS FlexPath™)- DOCSIS 2.0b- DOCSIS 3.0
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“Packet-based” Channel Bonding Technology was adopted by the CableLabs DOCSIS 3.0 Standard
▪ ARRIS FlexPath used Packet-based Channel Bonding
▪ ARRIS FlexPath was the first available Pre-Standard Channel Bonding System
▪ SW upgrade to CMTS▪ New CM design▪ Permits 4 Downstreams
& 4 Upstreams to each CM (160 Mbps down & 120 Mbps up)
CM MAC Processor
CMTSMAC Processor
DOCSISMAC1
Flow Bonder
Flow Bonder
CCMNCCMN-1CCM2CCM1
DOCSISMACM
DOCSISMACM-1
DOCSISMAC2
To Network
To Home Network
DOCSIS Network
. . .
. . .
Standard DOCSIS Channel
C4 CMTS
CM
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ARRIS FlexPath Packet-basedChannel Bonding Demo & Trial History
2004 2005 2006 2007
2Q04 3Q04 4Q04 1Q05 2Q05 3Q05 4Q05 1Q06 2Q06 3Q06 4Q06 1Q07 2Q07
World’s 1st Channel Bonding Demo (ARRIS FlexPath at NCTA)
Lab & Field Trials of ARRIS FlexPath(ex: NTL in England)
World’s 2nd Channel Bonding Demo (ARRIS FlexPath at SCTE)
GeneralAvailability(August 2006)
This road map is subject to change.
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Agenda
▪ Introduction▪ M-CMTS & DOCSIS 3.0 History▪ Predictions: The Near Future
(2006-2009)▪ Predictions: The Distant Future
(2010-2011)▪ Conclusions
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Fixed U:D Ratio
Integrated CMTS
(I-CMTS)
Modular CMTS
(M-CMTS)
Flexible U:D Ratio
Next-Gen CMTS Evolutionary Paths
DOCSIS 2.0
DOCSIS 3.0
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Fixed U:D Ratio
Integrated CMTS
(I-CMTS)
Modular CMTS
(M-CMTS)
Flexible U:D Ratio
Next-Gen CMTS Evolutionary Paths
DOCSIS 2.0
DOCSIS 3.0
“DOCSIS 2.0b” is defininga subset of DOCSIS 3.0
features for anAccelerated Test Program
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Fixed RatioIntegrated2.0 CMTS
Fixed RatioIntegrated2.0 CMTS
Fixed U:D Ratio
Flexible U:D Ratio
DOCSIS 2.0
DOCSIS 3.0/2.0b
Flexible Ratio 3.0/2.0bM-CMTS
Flexible Ratio Integrated 3.0/2.0b
I-CMTS
Next-Gen CMTS Evolutionary Paths
Integrated CMTS
(I-CMTS)
Modular CMTS
(M-CMTS)
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Before we answer,let’s do a quick review of past DOCSIS Spec
Releases & 1st Successful Cert Waves
1997 1998 2001 2002 20031999 2000 2004 2005 2006
DOCSIS 1.0Spec Issued
1st Qualified1.0 CMTS
DOCSIS 1.1Spec Issued
1st Qualified1.1 CMTS (ARRIS)
DOCSIS 2.0Spec Issued
2nd Qualified2.0 CMTS (ARRIS)
1st Qualified2.0 CMTS (Terayon wrote most of spec)
2007
DOCSIS 3.0Spec Issued
???
M-CMTSSpecs Issued
???
When will these new CMTS Architectures be Deployable?
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Industry Predictions: The Near Future
2006 2007
1Q06 2Q06 3Q06 4Q06 1Q07 2Q07 3Q07 4Q07 1Q08 2Q08
2008
Interops (2.0/2.0b)
Deployments
Interops Lab/FieldTrials
Deployments
InteropsLab/Field
Trials
Lab/FieldTrials
(since 1Q05)
This does not reflect ARRIS product plans- It is a representation of general industry milestones by all Vendors.
Pre-Standard(e.g. FlexPath)
M-CMTS
DOCSIS 2.0b
DOCSIS 3.0
Lab/Field Trials
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Industry Predictions: The Near Future
2008 2009
1Q08 2Q08 3Q08 4Q08 1Q09 2Q09 3Q09 4Q09 1Q10 2Q10
2010
Deployments
Deployments
This does not reflect ARRIS product plans- It is a representation of general industry milestones by all Vendors.
Pre-Standard(e.g. FlexPath)
M-CMTS
DOCSIS 2.0b
DOCSIS 3.0
Lab/FieldTrials
Lab/FieldTrials
Deployments
Deployments
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Agenda
▪ Introduction▪ M-CMTS & DOCSIS 3.0 History▪ Predictions: The Near Future
(2006-2009)▪ Predictions: The Distant Future
(2010-2011)▪ Conclusions
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Distant Future Predictions: The Subscriber Base
▪ Typical 100K HHP Headends will require their CMTSs to support > 100K CM devices due to the inclusion of CMs, MTAs, and many DOCSIS-enabled STBs per household
▪ Subscriber PCs & Network Servers will need to be re-configured with larger buffers & GigE feeds to match the new high-speed Internet bandwidths offered by Channel Bonding
▪ MSOs will find that offering high availability & QoS in both I-CMTS & M-CMTS deployments will permit them to differentiate their converged services in a very competitive market
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Distant Future Predictions: The Applications
▪ MSOs will begin to offer more local caching of content (video and data) to minimize Round Trip Times (RTTs) and increase TCP download speeds
▪ IPTV with large content libraries from local caches will begin to be heavily offered by MSOs over Channel Bonding systems
▪ MSOs will begin finding new applications that make extensive use of Channel Bonding…
− ex: MSO-managed WiMax/WiBro networks & Business Services may consume very high backhaul bandwidths w/ up to 500 Mbps feeds (~12 bonded downstream channels)
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Agenda
▪ Introduction▪ M-CMTS & DOCSIS 3.0 History▪ Predictions: The Near Future
(2006-2009)▪ Predictions: The Distant Future
(2010-2011)▪ Conclusions
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Do MSOs need a Next Gen CMTS?
▪ Flexible bandwidth allocation needed to reduce CAPEX/sub− Discrete deployment of Upstream and Downstream capacity allows new
cost-effective services like IPTV
▪ Competition from DSL and FTTX is driving Channel Bonding
▪ IPv6 is needed to resolve IP address exhaust for large MSO or interconnected IP networks
▪ Triple play is moving to converged IPTV, VoIP, and HSD− This requires more bandwidth, security, and IP addresses to facilitate
this shift to everything IP, everywhere
Answer: Yes… In the form of DOCSIS® 3.0 and Modular-Answer: Yes… In the form of DOCSIS® 3.0 and Modular-CMTS (M-CMTS) and I-CMTSCMTS (M-CMTS) and I-CMTS
Answer: Yes… In the form of DOCSIS® 3.0 and Modular-Answer: Yes… In the form of DOCSIS® 3.0 and Modular-CMTS (M-CMTS) and I-CMTSCMTS (M-CMTS) and I-CMTS
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Conclusions
▪ DOCSIS 3.0, I-CMTS, and M-CMTS will all be available in the near future
▪ Successful deployment will require:− Detailed traffic engineering work to design Channel Bonded
networks− Careful Interops and Lab/Field Trials to ensure product
interoperability− Powerful diagnostic tools to assist in trouble-shooting− CMTS vendors with Channel Bonding deployment experience
▪ With DOCSIS 3.0 & I-CMTS & M-CMTS, the cable industry is creating a long-term infrastructure that will dominate the edge for years to come
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Thank You!
Contact Information:
tom.cloonan@arrisi.com