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2016 © ADTRAN, Inc. 2
EU Commission VHC Proposals
The Gigabit Society Communication is a ‘chapeau document’ setting out the overall vision
A new Digital Agenda statement in effect
It sets a new target of Gigabit connectivity for all main socio-economic drivers.
It updates the current targets to 100Mbps universal for 2020 upgradeable to 1 Gbps by 2025.
The document’s focus is generally on ‘very high-capacity networks’
2016 © ADTRAN, Inc.
EU Commission Implications
The intent of the Commission is to move to FTTP/FTTB.
CATV networks meet the performance conditions.
G.FAST can meet the performance conditions.
VDSL2 doesn’t meet the performance conditions.
Regulatory response? State aid qualifications?
3
2016 © ADTRAN, Inc.
4th
G.fast
DOCSIS 3.1
10G-EPON XGS-PON, NG-PON2
Broadband ADSL
DOCSIS1.0
Digital Voice + Text & 802.11b
Evolution of Access
1990s 2000s 2010s 2020s
Analog Mobile Voice
Analog Dial Up
2nd Gen
3rd Gen
1st Gen
Mobile Internet + MMS & 802.11G
ADSL2+ & VDSL
DOCSIS2.0 Digital TV
Mobile Broadband, All IP & 802.11n /ac
Vectored VDSL
DOCSIS 3.0
Massive Scale, Low Latency, Ultrafast
Wave II 802.11ac
5th
Capacity
Analog TV
Fibre
Wireless
Copper
Coax
BPON
EPON
GPON
GPON & XG-PON1
Decade Long Cycles
2016 © ADTRAN, Inc.
3dB SNR Margin
Higher Bit Loading
Increased Launch Power <30Mhz
Lower Noise Floor
Vectoring Improvements
Wider Bandwidth Support (212Mhz)
Coax Deployments
DTA – Independent and Collective
Bonding
Non Linear Precoding
G.fast Innovations & Amendments
2016 © ADTRAN, Inc.
7
6dB Field data Smoothed Curve
Simulated 3dB Lines
New Trend line extrapolated to
3dB margin
Actual 3dB Lab Performance
Moving from 6dB to 3dB SnR Margin
7
Real Gains on Longer Loops
50Mbps to 100Mbps Improvements
Negligible impact on stability
SRA behaves extremely well
2016 © ADTRAN, Inc.
G.fast – Higher Bit Loading
8
Small Improvements
Applies across entire Spectrum
12-15% Maximum improvement
Short Loops Gain most benefit
b
i
t
s
2016 © ADTRAN, Inc.
Increasing Transmit Power to 8dBm
9
Mixed Results
Improves Performance @200m+
Lowers performance <100M
Worth Approx. 30Mbps @300m
2016 © ADTRAN, Inc.
G.fast Performance Comparison TP and Coax
0,0
100,0
200,0
300,0
400,0
500,0
600,0
700,0
800,0
900,0
50 250 450 650 850 1050 1250 1450 1650 1850
Do
wn
str
eam
Th
rou
gh
pu
t R
ate
(M
bp
s)
Reach (ft)
G.fast (TP), G.fast (Coax) Performance @106MHz
G.Fast 106 MHz TP
10
G.Fast 106 MHz Coax
VDSL2 35b
VDSL2 17a
15 75 140 200 260 320 380 440 500 560
2016 © ADTRAN, Inc.
• Enable Dynamic Adjustment of the US/DS Rates
• Independent Operation for Coax or single pair TP
• Symmetric-Like Gigabit Broadband
• Coordinated DTA for Twisted pair bundles
DTA – Introducing Dynamic Time Allocation
TDD Upstream/Downstream Ratio
Upload Rate
Download Rate
User Driven BehaviorMillisecond Transitions
Time
2016 © ADTRAN, Inc.
VDSL2, Coexistance
Full Spectrum G.fast
550Mbps @ 200 Meters
21-106MHz G.fast 330Mbps @
200 meters
35b Supervectoring
270Mbps @ 200 meters
60 120 180 240 300 365 425 485 550 610 670 730
SuperVectoring
2016 © ADTRAN, Inc.
New Generation Chipsets in 2017
Lower Noise Floor
Vectoring Improvements24, 48 and 96 Port VectoringBetter Performing Vectoring Engines
Double Bandwidth – 106Mhz to 212Mhz
Big Step in performance
Short Loops / Coax
212Mhz -> 424Mhz Experimentation
8-port DFE
Distributed Vectoring
up to 96 lines
212MHz support
Octal Port DFE
DFE Gen 2
8-port DFE +
integrated AFE
Distributed Vectoring
up to 24 lines
212MHz support
Vectoring Engine
48 lines per device
Scalable to 96 lines
2MHz 106Mhz 212Mhz
2016 © ADTRAN, Inc.
G.fast Performance: Adding It All Together
0
500
1000
1500
2000
2500
3000
3500
4000
Target Ammend 1 (106Mhz)Ammend 2 (106Mhz)Ammend 3 (212Mhz)
Single Twisted Pair Coax Cable Dual Twisted Pair
2013 2014 2015 2016 2017
100 Metre Performance (Aggregate in Mbps)
FTTH Like Gigabit Broadband
2016 © ADTRAN, Inc.
Summary
15
• Consumer Appetite for More Capacity and New Service Innovation
Persists
• EU Commission Gigabit Society Targets have Technology Choice
Implications
• FTTH wherever Possible to Future Proof Investments
• Full Spectrum G.fast to Leapfrog EU Peers and Position Greece at
the Forefront of Digital Europe
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