Access Evolution 211014 1420 Paul-Spruyt

7/17/2019 Access Evolution 211014 1420 Paul-Spruyt

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COPYRIGHT © 2014 ALCATEL-LUCENT. ALL RIGHTS RESERVED.

1

CONNECTING PEOPLE AT THE SPEED OF LIGHT … USING C

Paul Spruyt, DSL Strategist, Alcatel-Lucent21 October, 2014




2

VECTORING IS ON THE RISEHELPS OPERATORS GET MORE FROM THEIR DSL COPPER NETWOR

12

2011

6

2012

9

2012

12

2012

3

2013

6

2013

9

2013

12

2013

3

2014

6

2014

9

2014

12

201

25+VECTORINGCUSTOMERS

65+VECTORING

TRIALS

3

2012

BBWF 2012

6 CUSTOMER

20+ TRIALS

90K VECTORING LINES

BBWF 2013

17 CUSTOMER

55+ TRIALS

2.4M VECTORING LINES

BBWF 2014

1st nationwide VDSL2vectoring activation

connects 1st userwith VDSL2 vectoring

ALU 1st to announcevectoring product

9

2011

ADSLsince B 1998

VDSL2since M 2005

Vectoringsince E 2011

ALCATEL-LUCENT SHIPMENTS [MIO LINES]




3

G.FAST GIVES HUNDREDS OF MBIT/S OVER LEGACY TWISTED PALSO WORKS ON COAX

G.fast on twisted pair in overlay with VDSL2 17a G.fast equally works o

G.fast end frequ configured avoid interference with C

Source: BT Labs in cooperation with ALU Source: test by ALU in operato




4

G.FAST ALLOWS FOR END-USER SELF-INSTALLATIONSOME (MODEST) BIT RATE LOSS IN CASE OF BRIDGED TAPS IN-HO

Bit rate loss may increase if mul

bri

100m

Source: ChuangHwa Telecom Labs (CHT-TL) in cooperation with ALU

BT length DS loss US

no 0%

20m -6%

10m -6%

2m -13%


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5

G.FAST ALLOWS CO-EXISTENCE WITH VDSL2 AND RADIO SERV

ITU-T G.9700 specifies power spectral density

(PSD) mask requirements for G.fast and a set

of tools to reduce the transmit PSD mask for

compliance with:

• Regional requirements

• Operator requirements e.g. spectrum

compatibility and coexistence with other xDSL

access and home network technologies

• Radio services

• EMC requirements

DS bit rate loss due to skippin(e.g. 558 Mb/s 500 Mb/s)

G.fast start frequency (e.g.

23 MHz) for compatibility

with VDSL2 in same cable

E.g. spectra

masking for

radio bandsSource (PSD figure): BT Labs in cooperation with ALU



6

G.FAST OFFERS CONTROL OVER UP/DOWN BIT RATE RATIO

G.fast makes use of Time Divisi

allowing a flexible configuratioupstream / downstream ratio

All G.fast lines in the same cab

synchronized, with the same up

• In presence of crosstalk

DS D

MTDD frame

(e.g. 750s)

USUS

Source (bit rate figure): Orange Labs in cooperation with ALU





8

652 MBit/s US+DS TRAFFIC(74m in-house cable)

Source: A1 in cooperation with ALU



9

ULTRA-BROADBAND TECHNOLOGY OPTIONS – THE GAP

800 7006005004003002001000DISTANCE [m]

FTTNVDSL2 Vectoring (17a)

FTTdp MULTI-USER(G.fast)

FTTdp SINGLE USER(G.fast)

FTTHCOST

~1Gb/s @ 50m (1

)

1Gb/s (1)

~500Mb/s @ 100m (1)

~100Mb/s @

GAP

(1) All rates mentioned are aggregate US+DS




10

ULTRA-BROADBAND TECHNOLOGY OPTIONS – VPLUS

800 7006005004003002001000DISTANCE [m]

FTTNVDSL2 Vectoring (17a)

FTTdp MULTI-USER(G.fast)

FTTdp SINGLE USER(G.fast)

FTTH

~200Mb/s+ @ 400m (1)

FTTx

Vplus

COST DENSE• Up to 200

• Matches m

cabinets

LONG REAC• Bit rate ga

• 17a perfor

loops

COST-OPTIM• High densi

G.fast)

HIGH SPEED• 200-300Mb

~1Gb/s @ 50m (1

)

1Gb/s (1)

~500Mb/s @ 100m (1)

~100Mb/s @

(1) All rates mentioned are aggregate US+DS




11

VPLUS FILLS THE GAP BETWEEN VDSL2 AND G.FASTVPLUS ALLOWS MIXED VECTORING WITH VDSL2 17A (VDSL2 30A D

VDSL2Most co

for 100

G.FAST100s of Mb/s at very short distan

(Performance shown for 23-106M

VplusCan be mixed with existin

Up to 300+Mb/s, 200Mb/s

Longer reach and higher

Cost optimized

FREQUENCY SPECTRUM

30MHz25kHz 17.6MHz

Different tone spacingVectoring not possible

Same tone spacing

Vectoring possible

4.3kHz

8.6kHz




12

0

2000

4000

6000

8000

10000

0 100 200 300 400 500 600 700 800 90

10Gbps @ 30m

10.1Gbps over 2 pairs

500MHz of frequency spectrum

WHAT’S NEXT – BELL LABS’ XG-FAST SETS NEW SPEED RECOR

Distance [m]

A g g r

e g a t e b i t r a t e [ M b / s ]

1G Symmetrical @ 70m

2Gbps over a single pair350MHz frequency spectrum




13

CONCLUSION

VDSL2 VECTORING IS ON THE RISE• Fast to market and competitive, VDSL2 vectoring helps operators get more from

DSL copper networks

G.FAST IS NEXT• 12 trials with operators, 8 more planned in 2014 ; first product in 1Q 2015

V.PLUS CAN FILL THE GAP BETWEEN VDSL2 AND G.FAST• 200-300 Mb/s, compatible with 17a, dense, cost optimized, matches FTTN/cur

MORE TO COME• Bell Labs demonstrated 2Gb/s and 10 Gb/s over short copper




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Access Evolution 211014 1420 Paul-Spruyt

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