FTTH capex optimisation FTTH capex optimisation by infrastructure sharingby infrastructure sharingby infrastructure sharing by infrastructure sharing

FIBER ALL THE WAYFIBER ALL THE WAYJ F hlbJean Fehlbaum

New trends in the regulation

In Switzerland, our OFCOM (Federal Office of Communications) has established a new recommendation for the indoor plant cabling of FTTHestablished a new recommendation for the indoor plant cabling of FTTH networks. This technical guideline called «FTTH In-House Installations Layer 1” foresees a 400% vertical and horizontal fibre distribution.

In parallel ARCEP (french regulatory body) has defined more or less the same rule for big multidwelling units.

In 2009 the same office has introduced for the french operator France Telecom the obligation of opening their duct network to their competitorsTelecom the obligation of opening their duct network to their competitors.

In Sweden, and partly Norway and Denmark, there is for the moment no l t t i thi di ti b t th k t t dregulatory movement in this direction, but the market actors are more and

more pushing forward a 2- or 4-fiber philosophy, in order to boost internal competition also throughout the infrastructure and give the possibility of accessing several operators at the same time.

Potentially shared Network functions

POP / COPOP / CO Urban node or Area node

Building Entry Point

OLT

BB IP OBB IP ODF

Main cables 288 – 864 OF Distribution cables 12 – 288 OF

FTTx Network functionalities and new challengesg

1. Feeder cabling : new needs for very high fibre count main cablescables

2 Distribution Cabinets and BEPs: high flexibility with splitters2. Distribution Cabinets and BEPs: high flexibility with splitters integration, multi-operators (PON & P2P combinations) and multifibre (up to 400% cabling density)( p g y)

3. Subscriber cables : preconnectorised optical fibres cables (400%) packaged together with the optical telecom outlet

FEEDER CABLING

The present market situation allows many different scenarios of sharing infrastructure in the feeder cabling section :infrastructure in the feeder cabling section :

1. Route sharing : subducting and micro-subducting

2 Chambers sharing : several splice closures in the same location2. Chambers sharing : several splice closures in the same location

3. Duct sharing : HD optical fibres cables (P2P multifibre networks)

4 Cable sheath sharing h brid cables

2.

4. Cable sheath sharing : hybrid cables

1.

3 Micro-cable with2.

4.4. 4.3. Micro-cable with

> 3 fibres/mm2

FEEDER CABLING : HIGH DENSITY OF CABLES

10000Fiber count as a function of cable outer diameter

Micro-bundles 2009LT & μ-bundles 2010Other μ-bundles 2008Other Loose Tubes 2009

2 fibers per mm2 fibers per mm223 fibers per mm3 fibers per mm22

1000

Other Loose Tubes 2009

T d ’ t d iT d ’ t d i100

er c

ount Today’s trends : increase Today’s trends : increase

density > 2 fibres/mmdensity > 2 fibres/mm22 for for LT constructions and > 3LT constructions and > 3

100 10 1 20 2 30

Fibe

LT constructions and > 3 LT constructions and > 3 fibres/mmfibres/mm22 for for μμ--bundlesbundles

0 5 10 15 20 25 30Cable outer diameter [mm]

Every network is already now (partly) P2P

Version 1 : P2P only in MDUs (100 OR 400%) or up to the area nodeor up to the area node

P2P PART OF NETWORKP2P PART OF NETWORKPON NETWORKPON NETWORK P2P PART OF NETWORKP2P PART OF NETWORKPOP / CO Urban node or

Area nodeBuilding Entry

OLT

Point

OLT

BB IP ODF

Main cables 24 – 144 OF Distribution cables 12 – 72 OF

REQUIREMENTS FOR THE AGGREGATION POINTS

Version 1 : P2P only in MDUs (100 OR 400%) or up to the area nodeNeeds flexible and scalable PON & P2P patching possibility (as well in street cabinetsNeeds flexible and scalable PON & P2P patching possibility (as well in street cabinets as in Building Entry Points versions)

Advantage : access part scalable as a function of the subscriber demand rate

Version 2 : P2P from ODF to OTONeeds a fibre quad from the aggregation point to the subscriber outlet

Ad t l li d i t ti d f t hi l tiAdvantage : only spliced interconnections, no need for patching solutions

12 - 72 144-576

BEP or Distribution cabinet (Area node)F d bl fFeeder cable forPON or/and P2P

P2P Drop cabling

Every network is already now (partly) P2P

Version 2 : P2P from ODF to OTO

Utility company

Aggregation point

Swisscom investmentsUtilities investmentsUtilities investmentsCommon investments (70% of total)

Utility Open Access fibres Utility Open Access fibres Swisscom own fibresSwisscom own fibres

FTTH DEPLOYMENT COSTS

Relative costs of the FTTH deployment

PotentialPotential for for costcostd tid tireductionreduction

WorksComponents

65 to 75 %75 to 85%

Hardware25 to 35%

Cables25 to 35% 15 to 25%

REFERENCE MODEL : NETWORK FUNCTIONSNETWORK FUNCTIONS

400% CABLING FROM THE AGGREGATION POINT (MANHOLE /400% CABLING FROM THE AGGREGATION POINT (MANHOLE / CABINET OR BEP) TO THE OPTICAL TERMINATION OUTLET (OTO)

Source : OFCOM (Switzerland)

DROP CABLING

PRECONNECTORISATION IS KEY ( AT THE MOMENT MAINLY IN CASE OF 400% CABLING)CASE OF 400% CABLING)

ISSUE : DROP CABLE TO BEP IN MDUs BUT ALSO TO DISTRIBUTION CABINETS IN LOW DENSITY AREAS => DISTANCE CAN VARY FROM 10 TO 200 METERS

SOLUTION : PULLING TECHNIQUE FOR DENSE AREAS (HIGH MDUs), WITH TYPICALLY 15 TO 30 METERS DISTANCE BETWEEN OTO & BEP

ALTERNATIVE : BLOWN SOLUTION UP TO 200 METERS DISTANCE FOR RURALALTERNATIVE : BLOWN SOLUTION UP TO 200 METERS DISTANCE FOR RURAL AREAS

Sweden : blown solutionup to 200m distance between

Switzerland : solution with pulling technique up to 50m distanceup to 200m distance between

terminal outlet and Distribution point

technique up to 50m distance between terminal outlet and BEP

CONCLUSION

IN EUROPE THE BUSINESS MODEL IN ALMOST ALL COUNTRIES IS EVOLVING TOWARDS A SERVICESCOUNTRIES IS EVOLVING TOWARDS A SERVICES COMPETITION, BUT BASED UPON A SHARED INFRASTRUCTURE.INFRASTRUCTURE.

SOME REGULATORS ARE PUSHING FORWARD A 400% VERSION, TO MAINTAIN SOME COMPETITION ON THE INFRASTRUCTURE TOO.

THE NEED FOR PON & P2P COMBINATION INDUCES DEMANDS FOR HIGHLY FLEXIBLE SOLUTIONS ABLE TODEMANDS FOR HIGHLY FLEXIBLE SOLUTIONS ABLE TO HOST HYBRID AND VERSATILE CABLINGS VARYING FROM 100% PON TO 100% P2PFROM 100% PON TO 100% P2P.