edoardo cottino
DESCRIPTION
FTTH Conference 2013 StandardizationTRANSCRIPT
Installation/Migration strategies for FTTH/FITH Networks
Edoardo Cottino ITU-T SG15 Q16 Rapporteur
FTTH Conference 2013 Workshop
Standardization & Economics for FTTH/FITH Networks
London, 19th february 2013
ITU-T SG 15 FTTH/FITH Standardization activity
The standardization of products and installation techniques relevant for the deployment of FTTH has been addressed since more than ten years by ITU-T under a global umbrella: products, planning, deployment and maintenance
This includes the development and updating of standards for the construction of the physical layer of the access network and the customer premises The activity related to optical infrastructures and products is under the leadership of Study Group 15 WP2 “Optical access/transport network technologies and physical infrastructures”
Care is taken in the harmonization of standards with different Institutions, in particular with IEC TC86 and its WGs
Q.16 “Optical physical infrastructure and cables”
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
L.87 Optical fibre cable constructions for drop application (07/2010)
This Question includes the study of new cable constructions for different
applications: underground, in ducts, aerial and customer premises.
Q.16 “Optical physical infrastructure and cables”
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)
L.88 Management of poles carrying overhead telecommunication lines (07/2010)
This Question address the investigation of new cost effective solution for
the construction of the infrastructures and for cable laying.
The next study period 2013-2016
The updated Q.16 “Outside plant and related indoor installation”
Study items will be considered include, but are not limited, to:
The suitable optical access network for urban and rural areas, taking into account the optical fibre demand and the expanse of area
The key considerations for indoor and outdoor network design taking into account planning and growth
The strategies for constructing new infrastructure and expansion of existing infrastructure, taking into account integrity of installation, maintenance and growth issues
The mechanical and environmental characteristics of the optical infrastructure for the FTTH networks
The suitable methods to enter the user premises and for installing optical fibre cables and other network elements in common parts of the buildings
The features needed for BDP (Building Distribution Point)
The techniques to construct and manage the fibre network inside the apartment
The techniques for managing the building network
The regulatory issues to be considered for fibre deployment
Outside Plant infrastructures challenges
It represents the prevalent cost in the customer connection. With traditional techniques is in the range between 60% (in urban areas) and 90% (in rural areas) of the total plant cost.
The trend of miniaturization of the optical cable structures as well as the availability of low bend fibres allows the reduction of the ducts dimensions and, consequently, of the dimensions of the road cutting
To 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 going to work on the standardization of all the available technologies to enable FTTH development
Optical cables miniaturization trend
96 o.f.
Diameter 15 mm
Weight 200 Kg/Km
Bending Radius 210 mm
Winch installation
144 o.f.
Diameter 8 mm
Weight 50 Kg/Km
Bending Radius 160 mm
Air blowing installation
Traditional cable Microcable
The reduction of diameter and weight of the microcables allow the installation in very small ducts with air blowing.
The same products can be installed in overhead plants or on building facades.
Infrastructure miniaturization trend
In the same way also the dimensions of ducts can be reduced.
In this new scenario large dimension road cuttings are unnecessary, as sections of several cm or some tens cm are sufficient.
Outer Diameter 40
or 50 mm
Diameter 10/14 mm
(inner/outer)
TRADITIONAL MINIATURIZED
Installation of ducts and cables in existing infrastructures
Outfitting of existing ducts (telcos, street lighting, power..) with microducts and use of completely dielectric microcables
Separation of the telecommunication access points with the use of reduced dimensions manholes
Fast solution for mapping underground networks
It should detect univocally underground services and display in real time the 3D results about buried utilities
It should be user friendly, with a man-machine interface that helps also
not skilled people to understand the results
It should geo-reference traces and they should be imported in a GIS
system or in a CAD file
Low impact trenching techniques
Installation of microducts inside a small dimension trench: width less than 5 cm and depth in the range 20-40 cm
Use of low environmental impact trenching machines
Use of new material to empty the dig to avoid road restoration
Reduction of “environmental costs” and “social costs”
All the activities permit to open and close the working site in the same day
Innovative material before and after hardening completed
Trench saw combined with suction machine
”Light” No-Dig
It is a guided drilling technique with small machines (also for use in manholes) for the laying of a 40 mm single duct, equipped with 4 miniducts and with anti rodent protection
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
“Market-driven” solution more conservative than the FTTDpoint (low cost “upfront”) and reduced risk of the investiments
Immediate cabling in primary optical network (up to the distribution cabinet)
Opex have few changes about the copper network, because failures are expecially in the secondary network
Very suitable for areas with middle urbanization from technical point of view
Only some Clients, asking speed internet connections, are connected through Fiber To The Home link
Needed power supply to the cabinet the electric
Not always suitable to meet the target of 100 Mb/s
FTTCab could have some limitations, both plant and regulatory expertise, in denser urban areas
Short Term solution: FTTCab “Fiber to the Cabinet”
“Market-driven" solution less conservative than FTTCab (high cost "upfront")
Immediate cabling in primary and secondary optical network (up to the distribution cabinet)
The FTTDp solution uses the existing copper of building in unbundling
Respect the objective of 100 Mb/s
Power supply from the customer home (or stairway lighting, etc.).
Costs and risks higher than the FTTCab , because of more time needed for the implementation
No foreseeable plant or regulatory limitations in dense urban areas
Standard configuration not yet available and proprietary solutions are existing
Short Term solution: : FTTDp “Fiber to the Distribution Point”
Existing building infrastructures challenges
The most critical issues of the FTTH deployment are related to the cabling of existing buildings, especially in metropolitan areas, due to:
• Limited availability of TLC infrastructures
• Trouble in obtaining permissions for installing “at sight” solutions
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”
Real scenarious in buildings….
Optical cabling in buildings: different approaches
Individual building cabling for each operator
Shared optical building cabling for all operators (when multiple "optical access networks" are deployed)
Example of cabling solutions in buildings: both the riser cable or the drop cable could contain one or
more fibres for each customer depending on the chosen architecture
Telecom Operators’ Constraints & Optical Components Key Features
Conclusions
The success of the FTTH challenge relies on the possibility for all the Players to build up a the state of the art infrastructure with, most reliable, cost effective and homogeneous technologies. For this purpose STANDARDS are needed.
In the last ten years of activity, ITU-T produced about 40 Recommendations related to FTTH physical layer; in the next study period (2013 – 2016) will be address fibers reliability items, cost effective installation techniques, cables and materials for FITH.
The set of Recommendations, Handbooks, Technical Reports produced, will speed up the FTTH deployment, allowing to the FTTH Players to make the correct choices for the implementation of a future-proof optical fibre access network.
Relationships with other Standardization Bodies are mandatory in order to harmonize standards and avoid duplication of efforts.
