VDSL2

Contributed bySascha LindeckeDirector of Marketing Broadband AccessSascha.lindecke@infineon.com

DSL technology and deployment

Today there are various DSL Technology Options

Family ITU Name Ratified MaximumSpeed capabilities

ADSL G.992.1 G.dmt 1999 7 Mbps down

800 kbps up

ADSL2 G.992.3 G.dmt.bis 2002 8 Mb/s down

1 Mbps up

ADSL2plus G.992.5 ADSL2plus 2003 24 Mbps down

1 Mbps up

ADSL2-RE G.992.3 Reach Extended 2003 8 Mbps down

1 Mbps up

SHDSL

(updated 2003)

G.991.2 G.SHDSL 2003 5.6 Mbps up/down

VDSL G.993.1 Very-high-data-rate DSL 2004 55 Mbps down

15 Mbps up

VDSL2 -12 MHz long reach G.993.2 Very-high-data-rate DSL 2 2005 55 Mbps down

30 Mbps up

VDSL2 - 30 MHz

Short reach

G.993.2 Very-high-data-rate DSL 2 2005 100 Mbps up/down

Existing High Speed Technologies Do Not Solve the Problem of Bottlenecks

Data rate[Mbit/s]

2

8

100

VD

SL

20

60

Line Length1 km 2 km 3 km 4 km 5 km

ADSL2+

SHDSL

Low bit-rates are insufficient for Triple-Play applications

Real bit-rates are too low for multiple (3) HDTV channels

Design only for short loop applications (MDU/MTU)

VDSL2 = VDSL Speeds with ADSL/2+ Reach and Flexibility

VDSL2 Standardization

VDSL2 standardization started in January 2004

Main technology development in ITU-T

North American system requirements in ANSI/NIPNAI

European system requirements in ETSI

Reached consent in May 2005 (Geneva Meeting)

VDSL-2 Key Features

DMT modulation

– Same as ADSL

– Bandwidth increased from 12 MHz to 30 MHz

– Up to 4096 tones (8x ADSL2+ !)

Worldwide Versatile Standard

– 8 profiles defined for different services

– Different bandplans for the regions

– Variety of PSDs to optimize spectral compatibility

Support for a variety of services

– Integrated Quality of Service features

– ATM as well as Ethernet payload

– Channel bonding for extended reach or rate

VDSL2 – The DSL convergence technology

ADSL2+• Coding• Framing• Long Reach• Upstream 0

VDSL• Bandplans• Short Loops

EFM• TC-Layer• Bonding• OaM• QoS

New Features• 100/100 Mbps• 30MHz• QoS

VDSL2 -All The Benefits of ADSL/2+, Higher Speeds Than VDSL1

Bandwidth Much higher performance for short loops

Trellis, SRA,GCI

Improved performance

Long Reach 90% customer reach + single technology

ADSLCompatibility

Reuse of existing ADSL infrastructure

Quality – Of –Service

Enable Triple – Play applications

VDSL2 30MHz

VDSL1 12MHz

VDSL1

VDSL2

None

Mandatory

VDSL1

VDSL2

1km

3km …

VDSL1

VDSL2

None

ADSL, ADSL2, ADSL2+

VDSL1

VDSL2

None

Dual Latency, Dual Bearer, Pre-Emption

VDSL2 BenefitsCriteria

VDSL2 Performance

0

50

100

150

200

250

0 500 1000 1500 2000 2500 3000 3500Reach / m

Rat

e / M

Bit

/s

DS ADSL2+ (2.2 MHz)

DS VDSL1 (12 MHz)

DS VDSL2 (30MHz)

AWGN/-140dBm/Hz/ANSI-TP1

Symmetrical 100Mbit/s due to 30MHz bandwidth

ADSL-like long reach performance due to Trellis coding and Echo Cancellation

Improved mid range performance through Trellis/Viterbi coding and Generic Convolutional Interleaver

1600 3300 4900 6600 8200 9900 11,500Reach / ft*

* Numbers are rounded

VDSL-2 Standard – Profiles

256 512 2048 4096 34782782

8 kBaud4 kBaud

# of Tones

20.5 dBm

14.5 dBm

11.5 dBm

17.5 dBm

Tx Power

Analog Bandwidth1.1 2.2 8.8 12.0 17.6 30.0

DSP Power

MHz

w/ US0

No US0ADSL

ADSL2+

VDSL2 8c

VDSL2 8d

VDSL2 8a

VDSL2 8b

VDSL2 12a,b

VDSL2 17a

VDSL2 30a

Bandplans, Annexes, PSDs

3.0 3.75 5.1 5.2 5.8 7.05 8.5 12.0 18.127613825 640

2.2ADSL2+

Annex A: POTS

Annex A: ADL

Annex B: 997 A

Annex B: 997 M

Annex B: 997 B

Annex B: 998 A

Annex B: 998 M

Annex B: 998 B

Annex B: 998 0

Annex C

China

US

DS

ADSL2+ Backwards Compatibility

ADSL2+Modem

DSLAM

ADSL2+Modem ADSL2+

Modem

Phase 1:large installedbase – ADSL/2+

ADSL2+Modem

DSLAM

ADSL2+Modem ADSL2+

Modem

Phase 2:DSLAM upgradeCPEs can "stay as they are"

ADSL2+Modem

DSLAM

VDSL2Modem ADSL2+

Modem

Phase 3:selective upgrade of CPEs dependent onselected service

ADSL2+ backwards compatibility will make VDSL2 deployment scenario much more attractive for the Carriers and will speed up the technology adoption.

VDSL2Modem

VDSL2 Line Card

VDSL2 Line Card

ADSL2+ Line Card

Market Trends – Deployment By Region

Europe• Triple-Play with at least 3 DTV channels + 5Mbps surfing + VoIP

• 30Mbps downstream, 3Mbps upstream• VDSL2 compliant• ADSL backwards compatible• 20.5dBm transmit power• Fits into existing ATM infrastructure• ADSL-like long reach performance

USA, Canada• Triple-Play with at least 3 HDTV channels + 5Mbps surfing + VoIP

• 30Mbps downstream, 3Mbps upstream• VDSL2 compliant• ADSL backwards compatible• 17.5dBm transmit power• ADSL-like long reach performance

Main-land China• Triple-Play with at least 3 DTV channels + 5Mbps surfing + VoIP

• 30Mbps downstream, 3Mbps upstream• VDSL2 compliant• ADSL backwards compatible• 20.5dBm transmit power• Fits into existing ATM infrastructure• ADSL-like long reach performance

Japan, Korea, Taiwan• Upgrade of existing 70Mbps services to 100Mbps symmetrical

• 100Mbps downstream, 100Mbps upstream

• VDSL2 compliant• ADSL backwards compatible• 14.5/20.5dBm transmit power• ADSL-like long reach performance

VDSL-2 Standard – Regional Requirements

256 512 2048 4096 34782782

8 kBaud4 kBaud

# of Tones

20.5 dBm

14.5 dBm

11.5 dBm

17.5 dBm

Tx Power

Analog Bandwidth1.1 2.2 8.8 12.0 17.6 30.0

DSP Power

MHz

w/ US0

No US0ADSL

ADSL2+

VDSL2 8c

VDSL2 8d

VDSL2 8a

VDSL2 8b

VDSL2 12a,b

VDSL2 17a

VDSL2 30a

NorthAmericaEU

US 12 MHz 20 dBm 2-4k tones

EU 17 MHz 20.5 dBm 4k tones

APAC

4k tones14.5 dBm30 MHzAPAC

Market Trends – Revenue Forecast Worldwide

VDSL shows 90% growth over the course of the next 3 years

VDSL is becoming a dominate technology in APAC/Japan

Total VDSL and VDSL2 IC port and revenue forecast

11/04

VDSL2 volume shipments

DSL-Forum‘s mission for VDSL-2

Deployability

– Integration of VDSL-2 in the network

– Adaptation for existing TRs

– Enhancement of ITU standards

Interoperability

– Creating a test plan

– Working with the interoperability test labs

– Considering operator requirements

DSL Forum contribution to VDSL-2

WT-114: VDSL-2 Performance Test Plan

– Setting performance targets for VDSL-2

– Considering different regions and profiles

WT-115: VDSL2 Functionality Test Plan

– Test plan for functional compliance to the VDSL-2 standard

– Enables operators to perform homologation of equipment

WT-129: Protocol Independent Object Model For Managing VDSL2

– Based on ITU G.997.1

– Adopting new objects from G.vdsl2

PD-139: Interoperability test plan for VDSL-2

– Enables efficient interoperability testing

– First plugfest planned for January 2006

Conclusion

VDSL-2 is the ultimate DSL standard

– Natural evolution of ADSL2+

– Best exploitation of Copper Plants

– Sufficient bandwidth for the years to come

VDSL-2 is ramping up quickly

– Significant tenders in all parts of the world

– First chipsets and systems available

– Driven by Video over Broadband

DSL-Forum is paving the way for a fast adoption of VDSL-2

– Leveraging the experience and specifications for ADSL-2

– Assures interoperability and standard compliance

– Enables mass deployment by seamless provisioning