FTTH Conference 2011 Workshop New Trends on Passive Networks Installation Eduardo Cottino ITU


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FTTH Conference 2011 Workshop New Trends on Passive Networks Installation Eduardo Cottino ITU

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FTTH Conference 2011 Workshop New Trends on Passive Networks Installation Eduardo Cottino ITU

  1. 1. FTTH Conference 2011Workshop on Standardization and Economic ImpactNew trends on passive networks installation Standardization Activities in SG15 Edoardo Cottino Rapporteur of Q16/15 Milano, 8 February 2011
  2. 2. ITU-T SG 15 Standardization activity and FTTHThe standardization of products and installation techniquesrelevant for the deployment of FTTH has been addressed sincemore than ten years by ITU-T under a global umbrella: products,planning, deployment and maintenanceThis encompasses the development and updating ofstandards for the construction of the physical layer of theaccess network and the customer premisesThe activity related to optical infrastructures and products isunder the leadership of Study Group 15 WP2 “Opticalaccess/transport network technologies and physicalinfrastructures”Care is taken in the harmonization of standards with differentInstitutions, in particular with IEC TC86 and its WGs 2
  3. 3. Questions assigned to ITU-T SG15 WP2 3
  4. 4. Q.16 “Optical physical infrastructure and cables”This Question includes the study of new cable constructions for differentapplications: underground, in ducts, aerial and customer premises.In force Recommendations on cable construction L.10 Optical fibre cables for duct and tunnel application (12/2002) L.26 Optical fibre cables for aerial application (12/2002) L.43 Optical fibre cables for buried application (12/2002) L.58 Optical fibre cables: Special needs for access network (03/2004) L.59 Optical fibre cables for indoor applications (01/2008) L.60 Construction of optical/metallic hybrid cables (09/2004) L.67 Small count optical fibre cables for indoor applications (10/2006) L.78 Optical fibre cable construction for sewer duct applications (05/2008) L.79 Optical fibre cable elements for microduct blowing installation (07/2008) application 4
  5. 5. Q.16 “Optical physical infrastructure and cables”This Question address the investigation of new cost effective solution forthe construction of the infrastructures and for cable laying.In force Recommendations on installation techniques L.35 Installation of optical fibre cables in the access network (10/1998) L.38 Use of trenchless techniques for the construction of underground infrastructures for telecommunication cable installation (09/1999) L.39 Investigation of the soil before using trenchless techniques (05/2000) L.48 Mini-trench installation technique (03/2003) L.49 Micro-trench installation technique (03/2003) L.57 Air-assisted installation of optical fibre cables (05/2003) L.61 Optical fibre cable installation by floating technique (09/2004) L.73 Methods for inspecting and repairing underground plastic ducts (04/2008) L.77 Installation of cables in sewer ducts (05/2008) L.82 Optical Cabling shared with multiple operator in buildings (07/2010) L.83 Low impact trenching technique for FTTx networks (07/2010) L.84 Fast Mapping of Underground Network (07/2010) 5
  6. 6. Outside Plant infrastructures challengesIt represents the prevalent cost in the customer connection. Withtraditional techniques is in the range between 60% (in urban areas) and90% (in rural areas) of the total plant cost.The trend of miniaturization of the optical cable structures as well as theavailability of low bend fibres allows the reduction of the ducts dimensionsand, consequently, of the dimensions of the road cuttingTo pave the way to FTTH, Telcos are looking for technologies allowing: To re-use as far as possible the existing infrastructures (even if partially occupied by other cables) To minimize the environmental impact by means of reduced dimension diggig techniques (or no dig at all!) To reduce the skill of manpower ITU-T SG15 is working on the standardization of all the available technologies to enable FTTH development 6
  7. 7. Optical cables miniaturization trend The reduction of diameter and weight of the mini cables allow the installation in very small ducts with innovative techniques as air blowing. The same products can be installed in overhead plants or on building facades.Traditional cable Mini cable 96 o.f.  Up to 120 (144) o.f. Diameter 15 mm  Diameter 8 mm Weight 200 Kg/Km  Weight 50 Kg/Km Bending Radius 210 mm  Bending Radius 160 mm Winch installatiion  Air blowing installation 7
  8. 8. Infrastructure miniaturization trendIn the same way also the dimensions of ducts can be reduced.In this new scenario large dimension road cuttings areunnecessary, as sections of several cm or some tens cm aresufficient. TRADITIONAL MINIATURIZED Diameter 10/14 mm (inner/outer) Outer Diameter 40 or 50 mm 8
  9. 9. Low impact trenching techniquesInstallation of mini ducts structures inside a small dimension trench:width less than 5 cm and depth in the range 20-30 cmUse of low environmental impact trenching machinesUse of new material to empty the dig to avoid road restorationReduction of “environmental costs” and “social costs”All the activities permit to open and close the working site in thesame day Innovative material before and after hardening completed Trench saw combined with suction machine 9
  10. 10. Examples of work site in urban area 10
  11. 11. ”Light” No-DigIt is a guided drilling technique with small machines (also for use inmanholes) for the laying of a 40 mm single duct, equipped with 4miniducts and with anti rodent protectionIt represents an evolution of the technique described in L.38 Advantages Drawbacks Ease to obtain permissions Need of a georadar survey Zero impact on environment and traffic Dependance on the soil type No need of expensive road restoration 11
  12. 12. Installation of ducts and cables in existing infrastructuresOutfitting of existing ducts (telcos, street lighting, power..) with 10/12 mm miniducts and use of completely dielectric minicablesSeparation of the telecommunication access points with the use of reduceddimensions manholes 12
  13. 13. Installation of ducts and cables in existing infrastructures Advantages DrawbacksCost effectiveness Coexistence with other servicesImmediate availability of Reduced protection of the plant (it needs aInfrastructure protection system)No need of expensive road Definition of the “rules” with the infrastructurerestoration ownerLow impact on environment and Definition of safety procedure for the O&Mtraffic activities 13
  14. 14. Fast solution for mapping underground networksIt should detect univocally underground services and display in real time the3D results about buried utilitiesIt should be user friendly, with a man-machine interface that helps also notskilled people to understand the resultsIt should geo-reference traces and they should be imported in a GIS system orin a CAD file 14
  15. 15. Example of georeferenced result imported in GIS system … Deep of buried utilityDistanceof buriedutilityfromStartPoint 15 15
  16. 16. Existing building infrastructures challengesThe most critical issues of the FTTH deployment are related tothe cabling of existing buildings, especially in metropolitanareas, due to:• Limited availability of TLC infrastructures•Trouble in obtaining permissions for installing “at sight”solutions• Old rules related to copper that do not allow to exploitthe dielectric characteristics of optical fibres to make itsinstallation more flexible ITU-T SG15 is working on the standardization of all the new products accessories test methods and installation techniques optimized for the “existing buildings scenario” 16
  17. 17. About installation in buildings…. 17
  18. 18. Q.16 Work in ProgressCable construction area L.caind Optical fibre cable functions for premises indoor application L.cda Optical fibre cable constructions for drop application L.cna Optical fibre cable constructions for new applicationInstallation techniques area L.cigd Installation of cables in gas ducts L.ciwd Installation of cables in water ducts L.coi Solutions for installation of ducts and cables in an occupied infrastructure L.fubt Installation of optical fibre units or mini-cables by blowing technique L.recc Installation of optical fibre cable by replacement of existing copper cables 18
  19. 19. ConclusionsThe success of the FTTH challenge relies on the possibility for all the Players tobuild up an infrastructure with the state of the art, most reliable, cost effectiveand homogeneous technologies. For this purpose STANDARDS are needed.In the last ten years of activity, ITU-T (SG15 WP2 and SG6) produced about 40Recommendations related to FTTH physical layer; about 20 Recommendationsin preparation in this study period (2009 – 2012) address fibers reliabilityitems, cost effective installation techniques, cables and materials.Relationships have been built with other Standardization Bodies (such as IEC,FTTH Council, JTC1/SC25,-..) in order harmonize standards and avoidduplication of efforts.The set of Recommendations, Handbooks, Technical Reports produced, willspeed up the FTTH deployment, as they give positive answers to the mosttopical issues and allow the FTTH Players (Operators, Investors…) to make thecorrect choices for the implementation of a future-proof optical fibre accessnetwork. 19
  20. 20. Thank you!e.cottino@sirti.it