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Network Planning in a nutshell
R. MeersmanR. WessälyU. Scheu
ComsofatesioScheu-Netzplannung
Outline
Network Planning in a nutshell
• Overview and common aspects• Strategic Planning • High-level Planning• Detailed Planning
FTTH Network Environment
Network Planning in a complex task
Single FTTH project• Thousands to tens of thousands of households / businesses (customer)• Expected investments (homes passed): 500 – 3000 Euro/customer• It’s all about costs and expected revenues
Why Network Planning is important?
A well planned network delivers direct value for your project
• Making the right strategical decisions• will avoid financial risks• will minimize investments• will improve adoption rates and average profit per customer
• Making the right structural decisions• will lower the overall required investment• will improve uniformity of network designs• …
• Making the right practical decisions• will ensure that the plans can be technically realised• will ensure the network components can be identified and located
during future operational processes like maintenance and repair
Strategic planning
High‐level planning
Detailed planning
Network Planning – Data & tools
Key components of a network planning solution…
1. The fuel of network planning: DATA (in all 3 planning stages)a) Geo-referenced data (GIS)
b) Hardware specificationsc) Costs
2. The engine of network planning: TOOLS (based on increasingly detailed data)a) Not only CAD, but also GISb) Data model / databasec) Automationd) Optimization
Strategic Planning High‐Level Planning Detailed Planning
Minimal dataset Detailed Highest possible detail
Structurally important All types All details incl. connect
Average unit costs Detailed unit costs Real costs from RFQ
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Network Planning – Data & Tools
… with different requirements depending on the network planning stage
DATA
TOOLS
Stage 1: Strategic Network Planning
FTTx Network deployments involve big money but the right answers to network planning questions are never the same
• How strong is my business case?• What is the best architecture and technology for my network?• Where and when to start deploying my network?
Strategic planning
High‐level planning
Detailed planning
Stage 1: Strategic Network Planning
Typical questions
• Where and in which order to deploy the FTTH network? Compare different regions, making accurate estimations of costs
(derived from GIS) and revenues (derived from geomarketing)• What methods, components and technologies to use?
Compare different scenarios, considering:• Different architectures (“x” in FTTx, see Ch 2) • Different active technologies (PON vs. P2P vs. hybrid, see Ch 3)• Different levels of fibre concentration (see Ch 8)• Different cable deployment techniques
(micro-cables vs. conventional cabling, see Ch 8)• Different splitter architectures (see Ch 8)• Different in-house cabling and customer equipment methods
(see Ch 4 and 8)• Different infrastructure sharing strategies
Strategic planning
High‐level planning
Detailed planning
Stage 1: Strategic Network Planning
FTTH network deployments involve big money but the right answers to network planning questions are never the same• Costs and revenues of FTTH projects differ significantly, depending on
• Geography (streets, buildings)• Technological choices• Market conditions (type of families, service adoption, revenue)• Regulatory environment (open access obligations, right of way, …)• Existance of reusable infrastructure• …
(An example of how cost can evolve for changing conditions (in this case coverage))
Strategic planning
High‐level planning
Detailed planning
Stage 2: High-level Network Planning
… goes much more in the specifics of a planning region and delivers the structural decisions to the detailed planning
Strategic planning
High‐level planning
Detailed planning
Stage 2: High-level Network Planning
• Where will the POPs be located?Unclear how many POPs (depends on size of serving area,
availability, network architecture, maximum failures rates, ...)• How many fiber concentration points?
Depends on the capacities of the cabinets and closures (cassette trays, cables terminations, …)
Define the structure including the individually served buildings• Which cable routes serve which distribution and feeder areas?
Define topologically how buildings are connected to fiber concentration points (assuming permissions on public ground)
Optimized with respect to distance and re-use of existing infrastructure• What is the expected bill of materials?
Defines expected quantities for ducts, cables, closures, splitters, …, which can be used in negotiations with hardware suppliers
Typical questions
Strategic planning
High‐level planning
Detailed planning
Stage 3: Detailed Network Planning
convert the results from high-level planning into ……….
• How to built plans Strategic planning
High‐level planning
Detailed planning
• “As built plan” documentation
• Working side management
Stage 3: Detailed Network Planning
How to built plans
• underground constrution
Strategic planning
High‐level planning
Detailed planning
• labeling
• micropipe connections
• detailed drop connection
• fiber blow list
• splice planning
Stage 3: Detailed Network Planning
Documentation
• as built plan
Strategic planning
High‐level planning
Detailed planning
• OTDR test and measurements data
• walk in protocol
• landlord permission
• permissions under building law
• technical information
Stage 3: Detailed Network Planning
Working side management
civil engineering
Strategic planning
High‐level planning
Detailed planning
blowing the cable fibre splicing OTDR activation
Network Planning in a nutshell
Thank you for your attention!
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