vdsl2 vectoring - telekom austriacdn1.telekomaustria.com/final/de/media/pdf/vectoring.pdf · target...

Capital Market Day, 15 January 2013

VDSL2 Vectoring

Cautionary Statement

“This presentation contains certain forward-looking statements. Actual results may differ materially from those projected or implied in such forward-looking statements. Forward-looking information involves risks and uncertainties that could significantly affect expected results.”

2 Capital Market Day 2013

Overview

• What is vectoring?

• Board Level Vectoring versus System Level Vectoring

• Compatibility issues

• Next steps


What is Vectoring?

Each customer suffers from other customers using the same binder (Crosstalk, FEXT, Noise)

This reduces bitrates by 45 – 50% (compared to the situation of having only one customer on the binder)

Vectoring gains back up to 90% of lost bandwidth

Standardized technology according to ITU-T Standard: G.993.5 (May 2010)

Crosstalk Signal Transmitted

Signal Received

Signal of origin

„Anti Signal“ (Vectoring)

Signal Received

Crosstalk

Without Vectoring:

With Vectoring:

Generated Signal (Vectoring)


DSLAM is Reporting Crosstalk Between Copper Lines = Disturber Matrix

Crosstalk before Vectoring

Disturber

Cu

sto

mer


Vectoring Eliminates Crosstalk

Disturber

Cu

sto

mer

Crosstalk after Vectoring


Field Trial in the City of Korneuburg with Board Level Vectoring

= Vectoring per line card

• Max. 1 line card or 48 customers per cable or cable binder

• For more than 48 customers

• Cable topology must be taken into account

• Low usage and complex OSS implementation

• Solution fitting well to FTTB and FTTC with few customers

Board Level Vectoring (BLV)

DSLAM in a Street Cabinet

Cable/Binder Max. 48

Max. 48

Line card: Shelf:


Field Trial in the City of Korneuburg with Board Level Vectoring

Performance Increase in Korneuburg

85 Mbit/s 508 m

w/o Vectoring

with Vectoring

• Trial confirms result of laboratory

• Service Bitrate between 50 and 80 Mbit/s depending on the distance

Vectoring Proofs as a Cost Efficient and Stable Way to Offer High Bandwidth Speed


= Vectoring at the Shelf-Level

• Max. 384 customers per cable or cable binder

• Simple planning and provisioning processes: cable topology has not to be taken into account

• A Vectoring processor card is additionally required to evaluate and compensates crosstalk

• Solution fitting well to FTTC with more than 48 customers per site

A1 will Mainly Deploy System Level Vectoring

System Level Vectoring (SLV) – 2nd generation of Vectoring technology

Cable/Binder

Vectoring Processor Card:

Line card:

Max. 384

Shelf:

DSLAM in a Street Cabinet


98.7% of All VDSL2 Modems in A1 Network are Compatible with Vectoring

Modems

• All VDSL2 Modems of A1 supports vectoring

• Less than 1.3% legacy modems in A1 network • Replacement or upgrade

required

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

100000

333 m 761 m 1015 m 1348 m 1568 m 1839 m 2172 m kbps

Vectoring without legacy modems

8 Legacy modems -> Vectoring effect gone

Effect of legacy modems on Vectoring


Next Steps

Commercial and Technological Development

• Acceptance testing and integration of ASIC based processor card (up to 384 customers)

• Preparation of commercial launch

Planned Coverage Target 2013: VDSL2 Vectoring Deployment

• Vectoring as standard technology for

FTTC

• Focus on System Level Vectoring

• Card seeding until deployment of the ASIC based processor card

in % of homes

0.0%

2.0%

4.0%

6.0%

8.0%

10.0%

YE 2013 YE 2016

Local Loop Unbundling

• Legal Framework still under discussion


Thank you!


vdsl2 vectoring - telekom austriacdn1.telekomaustria.com/final/de/media/pdf/vectoring.pdf · target...

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