docsis 3.1 and its influence on business · docsis® 3.1 development and its influence on business...
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DOCSIS® 3.1 Development and its Influence on Business
12th Broadband Technology Conference Sopot, May 2013
Volker Leisse
Telecommunications Consultant
Who is Cable Europe Labs?
© Copyright Cable Europe Labs 2013
Cable Europe Labs by the Numbers
© Copyright Cable Europe Labs 2013
27.7
15,3
12,5
7,1
4,1 3,2 2,9 2,4 1,5
0
5
10
15
20
25
30
LGI/UPC KDG Virgin Ono Ziggo Zon Telenet Com Hem YouSee
Source: Cable Europe Labs, Company Reports, Eurostat
Europe – total (EU27)
Population: 503 mill Households: 211 mill Homes Passed: 110 mill Customers: 65 mill Service Subscribers: 76 mill
Mission and Goals of Cable Europe Labs
Focus on technologies with 18 to 24 month time horizon Span end-to-end network from core infrastructure to home
connectivity Cover complete development process
Technology assessment Specification and standardization Equipment certification
Leverage collective scale to influence cable technology development and to attract attention from important and/or innovative vendors
Involve relevant stakeholders to identify important technology trends and to link them to business and commercial requirements of members
Strong cooperation with partners such as CableLabs® and coordination of related standardization efforts
Represent members interests in technology regulation matters together with Cable Europe
© Copyright Cable Europe Labs 2013
Overview
Drivers for change Platform optimization DOCSIS 3.1 – technology highlights Network evolution
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Drivers for Change
Increased demand on network capacity High speed data services
Trendline establishes ~ 50% annual growth in downstream Similar annual growth in upstream
Linear broadcasting services Additional TV programs (particularly HD)
On-demand services – “Anytime” Growing Video on Demand libraries with improved and graphically intensive user
interfaces including search and recommendation engine Network DVR Catch-up services; personalized programming
More over IP – “Anywhere” Second and third screens are increasingly IP devices Address individualization in user behavior
© Copyright Cable Europe Labs 2013
Platform Optimization
Residential Services
Business Services
DOCSIS 3.0 Channel Bonding
EPON / GPON / P2P
CCAP High-density
Headend
DOCSIS 3.1 New PHY
Distributed Architecture
All Fiber
EPoC / GPoC
Time © Copyright Cable Europe Labs 2013
Converged Cable Access Platform - CCAP
Router
Rcvr
CMTS Core
Laser
Nar
row
cast
Bro
adca
st
Ups
trea
m
Unicast
Com
bine
r
EQAM Analog
Ups
trea
m
DS
Unicast & Narrowcast & Digital Broadcast
Services
CCAP Analog
Today’s Headend (modular architecture)
Headend with CCAP (integrated routing)
Rcvr Laser
CMTS + EQAM = CCAP
© Copyright Cable Europe Labs 2013
Distributed Architecture
Approach: move (some) components from the headend closer to the customer (e.g. into the optical node) More efficient usage of DOCSIS capabilities in significantly improved network
conditions Avoid active components in coaxial network (node+0 architecture) Enable migration towards digital optics
Mini-CMTS/CCAP Fully functional device with smaller form factor and limited performance to be
deployed in the field Number and location of devices results in significant concerns about reliability,
robustness and management simplicity cost driver Requirements established by network operator; no interoperability issue; no
specification issue Remote PHY
PHY layer signal processing moved to the field; most or all MAC layer functionality remains in headend
Requires new interfaces to enable interoperability (UEPI, Timing Protocol, etc.) Likely to be addressed via CableLabs specification
© Copyright Cable Europe Labs 2013
DOCSIS 3.1 Project
New version of DOCSIS specifications (version 3.1) Development project managed by CableLabs® Active participation of cable network operators and
equipment manufacturers Key factors for success: vendor contributions and alignment with
operator requirements
Cable Europe Labs facilitating review of technical proposals by European MSOs and contribution of requirements
© Copyright Cable Europe Labs 2013
DOCSIS 3.1 Objectives
Specification of technologies enabling Efficient support of 10+ Gbps of downstream capacity and 1+ Gbps
upstream capacity Significant reduction in cost per bit delivered compared to current
DOCSIS technology Adaptation to different amounts of available spectrum and plant
conditions Orderly migration strategy Efficient delivery of services to both residential and business
customers Improved energy efficiency features such as low power standby and/or
sleep modes
© Copyright Cable Europe Labs 2013
DOCSIS 3.1 Technology – Higher Capacity
Main mechanisms New error protection algorithms and higher modulation orders Operation across larger bands of spectrum
Effects Low Density Parity Check (LDPC) enables higher order modulation even in
current networks Increase in spectral efficiency
More bits/second/Hz in current plant conditions (e.g. noise, reflections) Same capacity at worse plant conditions (more subscribers can be reached with
higher tier services)
Simple example 8 bits /symbol with 256QAM 12 bits/symbol with 4096QAM = 50% capacity
increase Currently about 50 Mbps per 8 MHz channel (or about 4.7 Gbps per 862 MHz
plant) then about 75 Mbps per 8 MHz spectrum (or about 7 Gbps total)
Spectrum enhancement ~ 500 MHz of downstream spectrum at 10 bps/Hz (net throughput) for ~ 5 Gbps
capacity in DOCSIS 3.1 vs. ~ 780 MHz for 5 Gbps with DOCSIS 3.0
© Copyright Cable Europe Labs 2013
DOCSIS 3.1 Technology – Robustness, Flexibility, Cost Reduction Main mechanism
Orthogonal Frequency Division Multiplex (OFDM) for Upstream and Downstream
Effects Transmission of multiple narrow sub-carriers in a
frequency block (‘OFDM channel’ or ‘OFDM symbol’)
Each sub-carrier individually adjustable in modulation order and FEC to accommodate
Plant conditions (e.g. older network parts) Disturbances (e.g. LTE interference) Spectrum availability (e.g. co-existence with legacy
services) Flexible spectrum usage not restricted to 6/8 MHz
channels; incremental capacity additions Improved scaling to large bandwidth compared to
bonding single carrier QAM channels (SC-QAMs) Mature technology used in many other platforms
(notably mobile technologies) Economies-of-scale and larger vendor community
© Copyright Cable Europe Labs 2013
OFDM DS PHY channel
Sub-
carr
ier -
256
QAM
Su
b-ca
rrie
r - 2
56 Q
AM
Sub-
carr
ier -
512
QAM
Su
b-ca
rrie
r - 5
12 Q
AM
Sub-
carr
ier -
102
4 Q
AM
Sub-
carr
ier -
409
6 Q
AM
Sub-
carr
ier -
409
6 Q
AM
Sub-
carr
ier -
102
4 Q
AM
DOCSIS 3.1 Technology - Migration
Backward compatibility Support of at least 24 bonded SC-QAMs in downstream and 8 in
upstream S-CDMA in the upstream DOCSIS 3.1 CMs required to operate on DOCSIS 3.0 CMTSs DOCSIS 3.1 CMTSs required to support DOCSIS 3.0 (and 2.0) CMs To be implemented also with CCAP equipment
Operation on existing HFC networks Upstream spectrum remains below downstream Supports operation with existing upstream splits (42/65 MHz as mostly
in operation, 85 MHz as specified in DOCSIS 3.0) Supports spectrum enhancement in upstream (e.g. 200 MHz) and
downstream (e.g. 1.2 GHz or even 1.7 GHz) Supports the ability to take advantage of enhanced capabilities when
network, headend and CPE equipment permit
© Copyright Cable Europe Labs 2013
DOCSIS 3.1 Use Cases
Today
Few 1.0/1.1 Lots of 2.0 Some 3.0 CP
E H
eade
nd
5-65 MHz US 3.0 CMTS
DS Bonding
Soon
Remove 1.0/1.1 More 3.0
3.0 CCAP More DS Bonding
US Bonding S-CDMA
3.1 CM
Many 3.0 First 3.1
3.0 CCAP More DS & US
Bonding
3.1 DS CCAP
3.1 CCAP First 3.1 DS OFDM
DS Expansion
Lots of 3.0 More 3.1
3.1 US CCAP
First 3.1 US OFDMA
Lots of 3.1
Better HFC
US & DS Expansion
Reduction of 2.0
Considerations when introducing DOCSIS 3.1 • DOCSIS 3.0 CCAP before DOCSIS 3.1 available • First DOCSIS 3.1 CM with DOCSIS 3.0 CCAP • Introducation of DOCSIS 3.1 DS in CCAP via Firmware Upgrade • Introducation of DOCSIS 3.1 US in CCAP via Line Card swap • Expansion of frequency range particularly in US very complex
DOCSIS 3.0 CM DOCSIS 3.1 CM
DOCSIS 3.0 CMTS/CCAP DOCSIS 3.1 CMTS/CCAP
(Source: CableLabs, Comcast)
© Copyright Cable Europe Labs 2013
Towards FTTH ?
Service requirements are technology agnostic customers require speed, QoS
Technologies not necessarily mutually exclusive but complementary
Advantages of DOCSIS 3.1 as a delivery platform Data rates (and supported service tiers) competitive Connectivity available Demand-driven network upgrades (‘Fiber-to-where-it-makes-sense’) Protection of existing investment
Marketing challenge: symmetric services
© Copyright Cable Europe Labs 2013
Converging HFC Platforms
© Copyright Cable Europe Labs 2013
IP/Transport Network
DOCSIS OSS Servers
Data Phone Internet
HFC Network
CM CMTS DOCSIS Network
PON Network
D-ONU DPoE Network
OLT
DPoE System
PON Network
CNU DPoE Network with EPoC
OLT
DPoE System
Coax Network
OCU
(Source: CableLabs)
Summary and Timelines
DOCSIS 3.1 enabling Gigabit services Technical highlights
New FEC and higher order modulation for improved capacity OFDM for flexible spectrum usage and adaptation to plant conditions enabling cost
reductions Backward compatibility (support of 24x8 DOCSIS 3.0 operation at a minimum)
Initial benefits (e.g. improved spectral efficiency and flexible spectrum usage) on existing plants without changes
Full benefits (e.g. capacity enhancement and spectrum expansion) without additional exchange of equipment
Target timelines see completion of specifications in 2013 and initial products as early as 2014
Significant step in evolution of HFC networks remain competitive with alternative access technologies (on cost efficiency and capacity)
Capacity enhancements and, consequently, capital investment consistent with customer demand
Fiber connectivity to subscribers only where needed and/or economically feasible (e.g. business customers, green field)
DOCSIS 3.1 in combination with other technologies (DPoE, EPoC) creates network agnostic IP delivery platform
© Copyright Cable Europe Labs 2013
Thank you for your attention!
Volker Leisse ([email protected])
with special thanks to Matthew Schmitt and Curtis Knittle (both CableLabs), Mourad Veeneman (Liberty Global) and Jorge Salinger (Comcast) for allowing me to make
use of material