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Future Proof HFC with DCAJune 8 2016Eddy MötterCTO W-EU Cable Access, MSO SolutionsHuawei Technologies
4
Current Deployment and its future challenge
Challenges:
RF Bandwidth
Analogue BC noise
Noise of the HFC
CMTS
EQAM
Rx
Tx
CATV
SDV/VOD
IPFiber Node
OSS
combiner
AMP
CM
CM
TS
Upstream fiber
Downstream fiber
“Analog fibers”
5 65 85 862Frequency (MHz)
USFM
Analoge TVDOCSIS DS
Video
5
How to fix it? RF BandwidthSwitch off analog and Extend spectrum to
1,2 / 1,8 GHz
Analogue BC noiseTerminate analoge optical links: DCA
Noise of the HFCFiber Deep: DCA
6
Fix the RF Bandwidth (Coax will last for ever..)Expension to 1,2GHz•Network Modernization needed: Amplifier2.0, splitters, power distributing splitters, power insertors, taps, wall outlets, CM/STB/dTV, FM convertor•Network Maximum Enhancement: from 1Gbps to 8 Gbps DS,
FMD3.1 DS
12005 65 862Frequency (MHz)
D2.0 USAnaloge TV
DOCSIS DSVideo
204
D3.1 US
However the RF Spectrum Expension has its full effect only –as for the data bandwidth expension- when RF DS path allows 4KQAM or higher Modulation Orders to be distributed. DCA provides just that, as for the centralized solution using analogue optical links, it is unlikely since the noise contribution of the inhouse networks is outside the Span of Control of the MSO: 41dB MER is not likely to be met.
MER = 47,6 dB
MER = 47.6 dB MER = 40.9 dB
Analog fiber
Digital fiber
Expension to1,8GHz•Network Modernization needed: Amplifier3.0, splitters, power distributing splitters, power insertors,, taps, wall outlets, CM/STB/dTV, FM convertor•Network Maximum Enhancement: from 1Gbps to 10 Gbps DS and spare RF spectrum 400MHz for analoge left overs or VoD or 32 SCQAM
D3.1 DS
1800
D3.1 DS
7
CMTS
EQAM
Rx
Tx
CATV
SDV/VOD
IPFiber Node
OSS
combiner
AMP
CM
CM
TS
Upstream fiber
Downstream fiber
“Analog fiber”
Fix the Analoge Broadcast Noise (0011100011111)
OSS
OLTIP Data
CMC AMP
CM
TxeQAM
CATV
SDV/VODD-C
CA
P
SDV/VoD fiber(downstream)
10GPON Link (Up/down)
IP Video
“digital fiber”
eQAM
8
dB SNR for digital transport
Long length fiber
XdB SNR
End of Fiber nodeOLT
CMC
∞
XdB SNR (X-4)dB SNR(X-2)dB SNR (X-8)dB SNR
RX End of Fiber nodeLong length fiberCombining
NetworkAnalog Optical TX(Cooled DFB Laser)
BC/VOD
M‐CMTS
XdB SNR
Fix the Noise of the HFC (Fiber Deep(er))
•No need for node splits anymore on D3.0, and then D3.1 is also available•DCA enters the COAX part with 7-8 dB higher MER then Centralized: inhouse noise contribution is then of less influence. •This is also valid for US, so US HMO can be applied.
9
1980 1990 2000 2010 2020 20301
100
10k1k
10
100k1M
10M100M
1G10G
100G
bps
Year
NGDOCSIS
D3.0 max Capacity
1.02.0
3.03.1
1.1
3.x?4.0?
D3.1 max Capacity
5MHz 1GHz 2GHz 3GHz 4GHz 5GHz 6GHz
5MHz 1GHz 2GHz 3GHz 4GHz 5GHz 6GHz
DSUS
US
DS
DS
D3.0
D3.1
NG Cable
Today
Soon
FutureUS
US
5MHz 1GHz 2GHz 3GHz 4GHz 5GHz 6GHz
DS
RF source
0~2GHz
0~2GHz
0~2GHz
0~6GHz
Frequency Converter(Analog or Digital)
Trunk Drop
Demod&Remod
CMTSFiber
Drop Cable~100m
0~3/6GHz
1. Coax cable still have a huge potential capacity which haven’t been used.
• DOCSIS technology upgrade to a new generation every 5-6 years;• The next generation DOCSIS(maybe 4.0) will start from about 2020, and extending the workable spectrum will happen most probably.
2. Further investment for now is simply not necessary to keep the revenue flowing.
Keep the coax plant the same without Fiber deeper, extend spectrum to 3 or 6GHz; Truck cable work on wider spectrum including multiple individual band than drop cable; No need to change of the components of drop cable;
Move the Fiber to the last amplifier and make the coax plant to be passive; A short coax cable length can be easier to support 3GHz which could offer more than at least 20Gbps bandwidth;
WHY
WHAT IF: 1. Super Trunk for multiple SG WHAT IF: 2. Fiber deeper
Food for thought..what if?
Copyright©2015 Huawei Technologies Co., Ltd. All Rights Reserved.The information in this document may contain predictive statements including, without limitation, statements regarding the future financialand operating results, future product portfolio, new technology, etc. There are a number of factors that could cause actual results anddevelopments to differ materially from those expressed or implied in the predictive statements. Therefore, such information is provided forreference purpose only and constitutes neither an offer nor an acceptance. Huawei may change the information at any time without notice.
Thank you
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