WHAT LIES AHEAD?

ISSUES FACING THE ISP INDUSTRY

Gavin YoungChief Architect, C&W AccessDATE 24th October 2007

3 KEY ISSUESFOR ISPs TO THINK ABOUT

1. Next Generation Access

2. European Union Code of Conduct on broadband power consumption

3. Ability of your network to support IPTV

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ADSL2plus

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BROADBAND ACCESS TODAYMAINLY DSL, FIBRE JUST TO BUSINESS SITES

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Ethernet/ IP/MPLS

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GPON

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NEXT GENERATION ACCESS : GPON & VDSL2FIBRE DEEPER INTO THE NETWORK FOR CONSUMERS

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IMPLICATIONS OF GPONFOR ISPsDeployment starts in 2008

There will be NO copper to these homes (so no DSL)

Could be ~ 2M GPON homes over the next 10 years

Your service ‘availability checker’ will be full of black holes unless you can master delivering service over GPON!

A whole range of new logistics and technical challenges for ISPs :

Different CPE Analogue Terminal Adapter for Voice, new router

Different Voice DeliveryNo existing voice to the home as per DSLNeed a softswitch (or partner who has one)No line powering, needs battery back-up

Different Processes & SystemsFor provisioning, fault resolution etc.

THE ECONOMIC IMPORTANCE OF MULTICAST

Source : The IP Development Network WWW.IP-Dev.net

White Paper “HD-TV over IP, who pays the bill?”

OFCOM CONSULTATION ON NEXT GENERATION ACCESS

Consultation published : 26th September 2007Responses Due : 5th December 2007

MAKE YOUR VIEWS KNOWN

Influence the products, functionality and regulation for Next Generation Access

3 KEY ISSUESFOR ISPs TO THINK ABOUT

1. Next Generation Access

2. European Union Code of Conduct on broadband power consumption

3. Ability of your network to support IPTV

EU CODE OF CONDUCT ON POWER USAGE IN ACCESS NETWORKSSETS TARGETS FOR FUTURE POWER CONSUMPTION“Code of Conduct on Energy Consumption of Broadband Equipment”

Version 2, 17th July 2007

ADSL2plus can reduce transmit power when traffic is light

Uses L2 & L3 power modes, these may be needed to meet the EU CoC targets

BUT, can reduce the stability of all DSL systems :More errorsMore loss of synch & retrains

-> Lousy for video & Dynamic Line Management at risk

NICC DSL Task Group is looking at how ADSL2plus low power modes could be used safely

3 KEY ISSUESFOR ISPs TO THINK ABOUT

1. Next Generation Access

2. European Union Code of Conduct on broadband power consumption

3. Ability of your network to support IPTV

IPTV OVER BROADBANDWILL SHOW UP ANY ACCESS & HOME NETWORK QoS INADEQUACIES

Internet AccessBest effort networks will work

VoiceReally needs QoS but can “get away with” throwing capacity at it

VideoQoS is essential for responsive streaming video

HDTVIS EVEN MORE DEMANDING

TYPICAL IPTV BIT-ERROR RATE (BER) REQUIREMENTS

10-9 to 10-8 for SDTV 10-10 to 10-9 for HDTV (i.e. needs to be as good as fibre transmission systems!)

Standard DSL performance target is BER = 10-7 (at 0dB noise margin)DSL BER of 10-8 can be achieved with reasonable noise margin

BER lower than 10-8 is very hard to achieveMany DSL routers have an intrinsic noise floor between 10-8 and 10-9

CONCLUSIONVideo Application Layer Forward Error Correction (AL-FEC) may be neededSee DSL Forum TR-126 and DVB work in this areaTechnically feasible using new Raptor Codes (e.g. from Digital Fountain)

SUMMARY

AS AN ISP, MAKE SURE THAT YOU (OR YOUR BROADBAND NETWORK SUPPLIER) UNDERSTAND & ARE INVOLVED IN THESE ISSUES :

1. Next Generation Access Specification & use of GPON products within the UK Respond to Ofcom NGA consultation

2. European Union Code of Conduct on broadband power consumption NICC discussions on use of ADSL2plus low-power modes

3. Ability of your network to support IPTV What it takes to deliver IPTV, especially HDTV