FTTH architecture: P2P, an up-to-date reassessment
FTTH Conference 2011Milan, 9th-10th February 2011
Ermanno BerrutoWIND Telecomunicazioni S.p.A.
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Agenda
• Copper network in Italy: LLU Success Story
• Fiber optic unbundling in FTTH
• P2P Architecture
• FTTH Business Issues
• Conclusions
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Copper network in Italy: LLU Success Story
The Unbundling model used with the classical copper access network has been a case of great success in opening the access network and has allowed great development of competition and created great advantages for the consumers.
Copper Network is unique as:
Why not FTTH?
electricity distribution motorway railway sewers water ducts………
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Fiber optic unbundling in FTTH
Point to point architecture, one fiber for user from the exchange to the home. The fiber optic unbundling can be provided at the exchange side.Solution is similar to copper unbundling.
GPO
NP
2P
Central Office
MDF
Access Node
Splitter
SameInfrastructure
Access Node
DifferentAccess Model
Operator 1
Operator 2
Operator3
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A Future Proof Network
Maximum flexibility and ease in passing from one operator to another
Technology agnostic (the access network is single passive fibre that can support any technology such as ethernet, GPON, etc.)
Symmetric services
Zero touch: no further infrastructure up-grade
Low maintenance cost
P2P Architecture
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P2P needs a lot of fibers but:
New micro-cables technologies allow higher existing infrastructure reuse (not only Telco)
New digging technique make easier new infrastructure development (micro trench, one day dig…)
P2P needs space in Central office but:
New High density Optical Distribution Frame allows to manage up to 10k fibers in about 30-40 m2
No need of thousands of cabinets installed in curb or building
P2P Architecture
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No Dig Perforation with georadar Microtubes
Underground Compact Junctions
Yesterday Today
New technologies to support Fibre Implementation
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Mini cables with up-to 144 fibres with only 7.8 mm diameter
Cables
New technologies to support Fibre Implementation
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New technologies to support Fibre Implementation
In alternative to traditional fibre trench excavation various new low impact excavation ( 5 cm x 30 cm ) alternatives are available .
Microtrenches
One day Dig continous cicle using small machines requiring one day work
Digging Technologies
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High Density Optical Distribution Frames are becoming available
For example :
Application Footprint: max. 1536-ports/frameApplication Density: max. 3353-ports/m²
New technologies in support to Fibre Implementation
In Rome we are testing jointly with Fastweb and Vodafone an Optical distribution Frame for 10k fiber with 36m2 footprint in an LLU scenario
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FTTH has long term viability
Pay back investment not less than 7-10 years
Crucial issue for credible business model is Copper Total Replacement.
Copper fees totally transferred to the fiber network.
Other solutions for enhancing the FTTH business model can be found by introducing new broadband services and by decreasing the cost per home passed (100% take rate)
FTTH Business Issues
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FTTH Business Issues
Many studies show that one P2P infrastructure can optimize the global investment and the TCO
The total amount of available money is limited. Instead of overlapping several networks, the overall coverage could be enlarged with a single network, using the same amount of money
Overlapping NO-Overlapping
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FTTH DeploymentConsiderations© 2008 Cisco Systems, Wolfgang Fischer
Investment for only one open P2P infrastructure seems the best way
Final Report for Ofcom Competitive models in GPON 1 December 2009 Ref: 15340-493
WW FTTx access – market view and theneeds for fibre accessAll Rights Reserved © 2 | High leverage Network | Alcatel-Lucent 2009
Infrastrutture a Banda Ultra Larga per“Italia Digitale”Tavolo Tecnico “Operatori –Governo” 28 Ottobre 2010
European FTTH Forecast, 2009-2014 Graham FinnieChief Analyst Heavy Reading24 February, 2010FTTH Council Conference, Lisbon
FTTH Business Caseand ImplicationsFTTH Business Caseand Implications
Pure P2P cost VS Multi-GPON
Memorandum Of Understanding Italia Digitale Sviluppo dell’infrastruttura per Reti a Banda Ultra LargaRoma, 10 novembre 2010
A MOU has been undersigned between Operators and the Government who has promoted it , in order to stimulate the development of Ultra Broad band Networks in Italy.
From the evaluations carried out within the MOU, it can be deduced that the additional capex needed to implement a fully P2P architecture would be around 10% vs multi-GPON
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Average Capex difference between Base Case (Std GPON) and Exchange Flexi Point(1 fiber per user from the Exchange to the Household, PtP like) is about 23%
P2P +23% vs Single GPON, but Multi-GPON +47% vs P2P
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Δ +23%
Δ +47%
Single GPON
Multi-GPONP2P
Single GPON
P2P
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Multi-GPON: the worst scenario also from Opex point of view
Single GPON
Multi-GPON
P2P
Multi-GPON
P2P represents a viable solution in high take rate area and small to medium CO
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The opportunity is to build only one fiber agnostic infrastructure(P2P) with copper total replacement in order to:
Avoid duplication
Enlarge as much as possible FTTH area
Enable services ecosystem and Country economy
Reduce TCO and guarantee future profness
Infrastructure could be a premium only in start-up phase
Lesson Learned in Mobile Tower is clear: now each operator tries to share sites as much as possible
Conclusion