Techno-Economic Comparison of GPONs and Long-reach PONs Farsheed Farjady Dr Marco Ruffini, Professor...
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Transcript of Techno-Economic Comparison of GPONs and Long-reach PONs Farsheed Farjady Dr Marco Ruffini, Professor...
![Page 1: Techno-Economic Comparison of GPONs and Long-reach PONs Farsheed Farjady Dr Marco Ruffini, Professor David Payne, Professor Nick Doran.](https://reader030.fdocuments.in/reader030/viewer/2022032607/56649ed35503460f94be2ad6/html5/thumbnails/1.jpg)
Techno-Economic Comparison of GPONs and Long-reach PONs
Farsheed Farjady
Dr Marco Ruffini, Professor David Payne, Professor Nick Doran
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Overview
1.0 Intro to LR-PON and GPON2.0 Advantages of LR-PON3.0 Results4.0 Summary
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ONU
ONU
ONU
Local Exchange
20 km max
2.5 Gbit/s downstream (1495 nm)
1.25 Gbit/s upstream
(1310 nm)
GPON Architecture with 21CN backhaul
GPON
OLT
Backhaulto metro nodes
32-64 Customers
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Flat Core Network Metro
Node
LONG-REACH PONs (LR-PONs)
100 km
LOCAL EXCHANGE(by passed)
OPTICAL AMPLIFIERS
512 to1024 total split
10.0 Gbit/s downstream
10.0 Gbit/s upstream
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Advantages of LR-PON•Large split 512 to 1024 instead of 32 to 64•Greater statistical multiplexing advantage. •Reduction in Electronic nodes and sub-systems
– Lower cost, lower power consumption - greener network
•Optical networks more reliable than copper.– Lower operating costs
•10Gb/s peak rate to customers (~10,000 times DSL rates).– 10 to 20 Mb/s sustained bandwidth (~200 times DSL rates).
•Future bandwidth can be ~ 100 times greater via WDM•5600 Local Exchanges in UK can be reduced to ~100!
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Techno-Economic Software ModelFibre cost data to create cash flows curves from Analysys Mason for BSG, 2008: “The costs of deploying fibre-based next-generation broadband Infrastructure”.
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Techno-Economic Software Model
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Cost breakdown
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Exchange Population
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LR-PON Cost Savings
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Reducing Take-up rate to 40%
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LR-PON Cost Saving
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Max bandwidth 1 Mb/s
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LR-PON Cost saving
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Max bandwidth 100 Mb/s
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LR-PON Cost Saving
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Effect of Take-up rate
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Effect of variable take-up rate population sizes
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100 Mb/s maximum bandwidth Effect of variable take-up rate and
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Cash Flow Curves
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Time to Positive Cash flow vs. Take-up rate
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Effect of Initial revenue
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High and Low Exchange Population
Exchange Population= 24645e.g. Swansea Main, Wales
Exchange Population= 5164e.g. Glantawe, Wales
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Comparison of Total Costs vs. Exchange Population
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LR-PON Cost Advantage
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Comparison of Total cost vs. Take-up Rate
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LR-PON Cost Advantage
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Summary I• The model is a flexible analysis tool for
comparing alternative architecturesCurrent version includes: – LR-PON plus flat optical core– Standard GPON with 21cn type backhaul
• The model predicts lower cost for LRPON as well as faster time to positive cash flow.
• These advantages will be greater when power consumption models are added later in the project.
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Summary II• The model can produce:
– Cash flow analysis– Component and sub-system costs.– Inventory analysis– Cost by region/geography, geotype or
exchange area etc.• It is developed as a strategic analysis tool but could be
developed for business case support in the future, if required.
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Acknowledgment
We wish to thank Welsh Assembly Government for funding this project.
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Thank you