Future Proof HFC with DCAJune 8 2016Eddy MötterCTO W-EU Cable Access, MSO SolutionsHuawei Technologies

2

Why should an MSO modernize the HFC network and how?

3

Biggest Driver for Network Modernization

Source: VNI & Huawei

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?

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