techno ----economic evaluation of next generation fttx … · ioannistomkos 1111 dr. ioannis tomkos...

Ioannis Tomkos1111

www.ait.edu.grwww.ait.edu.grwww.ait.edu.grwww.ait.edu.grwww.ait.edu.grwww.ait.edu.grwww.ait.edu.grwww.ait.edu.gr

Dr. Ioannis Tomkos

TechnoTechnoTechnoTechnoTechnoTechnoTechnoTechno--------economic Evaluation of economic Evaluation of economic Evaluation of economic Evaluation of economic Evaluation of economic Evaluation of economic Evaluation of economic Evaluation of

Next Generation Next Generation Next Generation Next Generation Next Generation Next Generation Next Generation Next Generation FTTxFTTxFTTxFTTxFTTxFTTxFTTxFTTx Access Access Access Access Access Access Access Access

Network deploymentsNetwork deploymentsNetwork deploymentsNetwork deploymentsNetwork deploymentsNetwork deploymentsNetwork deploymentsNetwork deployments

Ioannis Tomkos2222


Presentation OutlinePresentation OutlinePresentation OutlinePresentation Outline

� Drivers for NGA & FTTH

� Review of next generation optical access network architectures and technologies

� Capital investment savings achieved when using NGOA FTTH architectures/technologies

� Summary and conclusions

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Drivers for NGA deploymentsDrivers for NGA deploymentsDrivers for NGA deploymentsDrivers for NGA deploymentsDrivers for NGA deploymentsDrivers for NGA deploymentsDrivers for NGA deploymentsDrivers for NGA deployments

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WhatWhatWhatWhat’’’’s The Next s The Next s The Next s The Next ““““Killer AppKiller AppKiller AppKiller App”””” for for for for ““““tomorrowtomorrowtomorrowtomorrow””””????

Source: Cisco Systems

� Future 3-play services supporting multi-channel HDTV and 3D TV require huge bandwidth

� Furthermore there are upcoming services that are huge bandwidth generating sources:

• multi-player on-line gaming

• cloud computing

• Storage

• remote application hosting

• social networking and collaboration applications (i.e. videoconferencing, tele-presense)

• home management services (i.e. video surveillance)

� Cisco estimated that the average number of services that generate significant traffic increased from 11 to 18 over the past year

� ...and in addition to that the average number of users per household increases as well

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New services/applications and bandwidth demandNew services/applications and bandwidth demandNew services/applications and bandwidth demandNew services/applications and bandwidth demand

� The applications that are expected to flood the market (HDTV, 3D TV, tele-presence) are driving the demand forward

• The typical bandwidth demand/ household is anticipated to exceed soon 80 Mbps

Telephony 256 Kbps

Video On Demand (4 Mbps

per program)

8 Mbps

IP-Digital TV (4 Mbps per channel )

16 Mbps

High Definition TV (12 Mbps

per channel)

24 Mbps

3D SDTV 20 Mbps

Gaming 4 Mbps

File downloading 4 Mbps

Web-surfing 2 Mbps

Video Conferencing Sessions 2 Mbps

Total Per Household ≈ 80 Mbps

Source: FTTH Council North America, 2009

Verizon upgraded its FiOS service to 150Mb/s

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Correlation among required media bandwidth Correlation among required media bandwidth Correlation among required media bandwidth Correlation among required media bandwidth

and access network capabilitiesand access network capabilitiesand access network capabilitiesand access network capabilities

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EU Digital Agenda target: Internet for all EU Digital Agenda target: Internet for all

20202013

100% coverage of ≥30Mbps

100%internetcoverage

50% householdstake-up of ≥100Mbps NGA networks

Ioannis Tomkos8888


Access /aggregation network migration path

Evolution of access network architectureEvolution of access network architectureEvolution of access network architectureEvolution of access network architectureEvolution of access network architectureEvolution of access network architectureEvolution of access network architectureEvolution of access network architecture

FTTEx(ADSL2+) FTTCab(VDSL2)

FTTB

FTTH ONT

Modem

DSLAMModem

MDU-ONUModem OLT

OLT

Aggregation Network

Aggregation Network

Aggregation Network

Aggregation Network

DSLAM

Central Office Metro Access NodeCabinetHome / Building

Access bit rate

Tod

ayN

ear

Fut

ure

Source: Dirk Breuer et.al., DT

Note that in addition to FTTH, FTTC & FTTB are also considered NGA solutions…

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Is there only one solution?Is there only one solution?Is there only one solution?Is there only one solution?Is there only one solution?Is there only one solution?Is there only one solution?Is there only one solution?

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NGA FTTH architecture/technology optionsNGA FTTH architecture/technology optionsNGA FTTH architecture/technology optionsNGA FTTH architecture/technology optionsNGA FTTH architecture/technology optionsNGA FTTH architecture/technology optionsNGA FTTH architecture/technology optionsNGA FTTH architecture/technology options



FTTH architectures/technologiesFTTH architectures/technologiesFTTH architectures/technologiesFTTH architectures/technologiesFTTH architectures/technologiesFTTH architectures/technologiesFTTH architectures/technologiesFTTH architectures/technologies

� Home run architecture (a.k.a. P2P or Single star) – the most powerful (and costly) solution…

� Star architectures• Active star based on Ethernet technology• Passive (a.k.a Passive Optical Network ‘PON’)

→Legacy & NG-PON1 TDMA based PON systems (i.e. GPON, EPON, XGPON) –Available/Deployed today!

→Considered for NG-PON2– Wavelength Division Multiplexed (WDM-PON)

– Some products exist (e.g. LG-Ericsson)– Dense Wavelength Division Multiplexed

(DWDM-PON) » One product development activity exists

(NSN)– Orthogonal Frequency Division Multiplexed

(OFDM-PON)» One product development activity exists

(NEC)» ACCORDANCE OFDM-PON EU project Source: Ton Koonen



A more detailed view on possible solutions A more detailed view on possible solutions A more detailed view on possible solutions A more detailed view on possible solutions A more detailed view on possible solutions A more detailed view on possible solutions A more detailed view on possible solutions A more detailed view on possible solutions

for FTTH access networksfor FTTH access networksfor FTTH access networksfor FTTH access networksfor FTTH access networksfor FTTH access networksfor FTTH access networksfor FTTH access networks……………………

Tree-based FTTX

Active RN Power Splitter

WDM-PONTDM-PON

GPON

XG-PON

EPON

10G-EPON

40G-TDM

WDM Filter

StackedTDMA

4-8 λ w/ XG-PON

Hybrid (Filter + Splitter)

WDM+TDMA

FTTX Systems

DWDM

UDWDM

WDM+XXMA Hybrid

WDM+SCMA

PassiveActive

Ring-based FTTX

Active RN

RPR

Mesh-based FTTX

Active RNOADM OXC, ROADM

WDMEthernet

Topology

Architecture

Technology OFDM PON

Optical OFDM

Electrical OFDM

CDMA PON

Ethernet

1G…10G

Active Active

WDM+OFDMA

Remote Node (RN) Design

WDM+CDMA

Passive RN(patch-thru)

Realization CWDM

10G…100G

Passive Passive

Shared (Feeder) Fiber InfrastructureDedicated Fiber Infrastructure

Ethernet

DWDM

TDM

Active + passiveCascaded RNs

DD Coh.E-CDMA

O-CDMACoh.

SFP

SeededReflective

Tunable ONUArrayed OLT

WDM-PON+L1/2 AON

DWDM+ 10G L2

DWDM+ 10G L1

Analog TV/Mobile

RoF

Digital “CPRI”

Digital “OBSAI” HFC

Tree-based FTTX

Active RN Power Splitter

WDM-PONTDM-PON

GPON

XG-PON

EPON

10G-EPON

40G-TDM

WDM Filter

StackedTDMA

4-8 λ w/ XG-PON

Hybrid (Filter + Splitter)

WDM+TDMA

FTTX Systems

DWDM

UDWDM

WDM+XXMA Hybrid

WDM+SCMA

PassiveActive

Ring-based FTTX

Active RN

RPR

Mesh-based FTTX

Active RNOADM OXC, ROADM

WDMEthernet

Topology

Architecture

Technology OFDM PON

Optical OFDM

Electrical OFDM

CDMA PON

Ethernet

1G…10G

Active Active

WDM+OFDMA

Remote Node (RN) Design

WDM+CDMA

Passive RN(patch-thru)

Realization CWDM

10G…100G

Passive Passive

Shared (Feeder) Fiber InfrastructureDedicated Fiber Infrastructure

Ethernet

DWDM

TDM

Active + passiveCascaded RNs

DD Coh.E-CDMA

O-CDMACoh.

SFP

SeededReflective

Tunable ONUArrayed OLT

WDM-PON+L1/2 AON

DWDM+ 10G L2

DWDM+ 10G L1

Analog TV/Mobile

RoF

Digital “CPRI”

Digital “OBSAI” HFC

� There are many possible, potential solutions for NGA

� Not all (even a single one) of them fit (perfectly) therequirements

Source: OASE EU project



Trends in Trends in Trends in Trends in Trends in Trends in Trends in Trends in FTTxFTTxFTTxFTTxFTTxFTTxFTTxFTTx access networksaccess networksaccess networksaccess networksaccess networksaccess networksaccess networksaccess networks

Key requirements for NG FTTH:* Long reach* High splitting ratio

Source: ACCORDANCE EU project – WP2



NGNGNGNG----PON roadmap PON roadmap PON roadmap PON roadmap From G/E From G/E From G/E From G/E PONsPONsPONsPONs to NGto NGto NGto NG----PON1 to NGPON1 to NGPON1 to NGPON1 to NG----PON2PON2PON2PON2

Source: J.-I. Kani (NTT) et. al. IEEE Communications Magazine, November 2009



WavelengthWavelengthWavelengthWavelengthWavelengthWavelengthWavelengthWavelength--------stackedstackedstackedstackedstackedstackedstackedstacked NGPON1 NGPON1 NGPON1 NGPON1 NGPON1 NGPON1 NGPON1 NGPON1 systemsystemsystemsystemsystemsystemsystemsystem

Local Exchange

Distribution cable route

Main cable

CabinetBuilding Central access node POPHome

> 100kmca. 5km ca. 40km0

Feeder cableAggregation

cable

ONT …

ONT

ONT

1:4 1:8AWG

Aggregation network

TDMAOLT

TDMAOLT

…

…




40G TDM/TDMA WDM40G TDM/TDMA WDM40G TDM/TDMA WDM40G TDM/TDMA WDM40G TDM/TDMA WDM40G TDM/TDMA WDM40G TDM/TDMA WDM40G TDM/TDMA WDM--------stackstackstackstackstackstackstackstack

Local Exchange


Main cable



ONT …

ONT

ONT

1:4 1:8


cable

RE

ONT …

ONT

ONT

1:4 1:8OLT

OLT

OLT

40 G-PON

40 G-PON with RE

Grey: protection

Aggregation network

Aggregation network




WDM PON with wavelength routingWDM PON with wavelength routingWDM PON with wavelength routingWDM PON with wavelength routingWDM PON with wavelength routingWDM PON with wavelength routingWDM PON with wavelength routingWDM PON with wavelength routing

Local Exchange


Main cable




cable

ONT

ONT

ONT

AWG

AWG

Aggregation network

OLT

OLT

…

Grey: protection




UWDM: Broadcast + select approachUWDM: Broadcast + select approachUWDM: Broadcast + select approachUWDM: Broadcast + select approachUWDM: Broadcast + select approachUWDM: Broadcast + select approachUWDM: Broadcast + select approachUWDM: Broadcast + select approach

Local Exchange


Main cable




cable

1:4 1:8Splitter or AWG

Aggregation network

OLT

OLT

ONT

ONT

ONT

Broadcast + select approach

… …

Grey: protection

� UDWDM uses an extremely narrow wavelength grid to pack a high amount of low to medium speed channels in a small wavelength band. The high number of multiplexed channels sums up to a high aggregate capacity on the metro link, for instance 100 channels with 1 Gbps each (100 Gbps).

� To enable the high channel density needed to accommodate the channel number in a moderate wavelength interval, a narrow filtering method is required to perform the channel selection in the receivers. In addition, to achieve a power budget which covers passive transmission over metro distances and high splitting passive optical networks, high receiver sensitivity is a pivotal element. Coherent receivers with single-channel electrical (noise) bandwidth only, combined with modulation schemes which employ constellations with high symbol distances are hence preferable.



NGA technologies enabling longNGA technologies enabling longNGA technologies enabling longNGA technologies enabling longNGA technologies enabling longNGA technologies enabling longNGA technologies enabling longNGA technologies enabling long--------reach reach reach reach reach reach reach reach PONsPONsPONsPONsPONsPONsPONsPONs and and and and and and and and

converged metroconverged metroconverged metroconverged metroconverged metroconverged metroconverged metroconverged metro--------access networksaccess networksaccess networksaccess networksaccess networksaccess networksaccess networksaccess networks




TechnoTechnoTechnoTechnoTechnoTechnoTechnoTechno--------economic evaluation of NGA network economic evaluation of NGA network economic evaluation of NGA network economic evaluation of NGA network economic evaluation of NGA network economic evaluation of NGA network economic evaluation of NGA network economic evaluation of NGA network

architectures in terms of the outside plant costsarchitectures in terms of the outside plant costsarchitectures in terms of the outside plant costsarchitectures in terms of the outside plant costsarchitectures in terms of the outside plant costsarchitectures in terms of the outside plant costsarchitectures in terms of the outside plant costsarchitectures in terms of the outside plant costs



The biggest cost is in construction worksThe biggest cost is in construction worksThe biggest cost is in construction worksThe biggest cost is in construction worksThe biggest cost is in construction worksThe biggest cost is in construction worksThe biggest cost is in construction worksThe biggest cost is in construction works



FTTH Network infrastructureFTTH Network infrastructureFTTH Network infrastructureFTTH Network infrastructureFTTH Network infrastructureFTTH Network infrastructureFTTH Network infrastructureFTTH Network infrastructure

FTTx total cost of deployment is mainly determined by outside

plant (OSP) costs and in particular the

construction related costs



Geometric Model

Rectangular geographic area divided among homogeneously distributed buildings

All buildings are assumed to connect through vertically and horizontal trenches to the nearest Aggregation Node

Basic Basic Basic Basic Basic Basic Basic Basic Geometric Geometric Geometric Geometric Geometric Geometric Geometric Geometric ModelModelModelModelModelModelModelModel

A

B

IBS

a

PCP

SCP

CO

A

B

IBSIBS

a

PCP

SCP

CO



OSPOSPOSPOSPOSPOSPOSPOSP trenches/elements coststrenches/elements coststrenches/elements coststrenches/elements coststrenches/elements coststrenches/elements coststrenches/elements coststrenches/elements costs

� Cost values are averages for the Greek market and come from cable manufacturers, construction and telecom companies

25eachY-Branch Unit (up to 3 inlets, 2 of which are feeder and one drop)

0,6mMicrocable - 1F

1m8-fiber cable

1,1m12-fiber cable

2,1m72-fiber cable

2,3m96-fiber cable

100eachBranching Box

400eachHand holes

500eachCabinets

0,75mHDPE duct - (2 micro tubes)



Unit Cost(Euros)

UnitDescription

Outside Plant Elements

35mPavement trench

14mMicro-trench (2ducts/24microtubes)



25mBig trench (8ducts/7micro tubes)

Unit Cost (Euros)

UnitDescription

Outside Plant Trenches



Assumptions on construction costsAssumptions on construction costsAssumptions on construction costsAssumptions on construction costsAssumptions on construction costsAssumptions on construction costsAssumptions on construction costsAssumptions on construction costs

� Depending on the households density a different trench size should be used at different parts of the OSP network (i.e. feeder, distribution, drop).

� The cost of each trench includes:• Trenching cost• Backfilling cost• Blacktopping cost• Duct installation cost

� Trenching on pavements is considered to be significantly higher than trenching on roads or countryside

� No RoW costs considered



Example results:Example results:Example results:Example results:Example results:Example results:Example results:Example results:

Comparison of various Comparison of various Comparison of various Comparison of various Comparison of various Comparison of various Comparison of various Comparison of various FTTxFTTxFTTxFTTxFTTxFTTxFTTxFTTx architecturesarchitecturesarchitecturesarchitecturesarchitecturesarchitecturesarchitecturesarchitectures



FTTxFTTxFTTxFTTx –––– Cost comparison (qualitative)Cost comparison (qualitative)Cost comparison (qualitative)Cost comparison (qualitative)

Source: Telecom Italia, 2008



FTTxFTTxFTTxFTTx –––– Cost comparison (quantitative!)Cost comparison (quantitative!)Cost comparison (quantitative!)Cost comparison (quantitative!)

OSP cost per HH vs. HH densityOSP cost per HH vs. HH densityOSP cost per HH vs. HH densityOSP cost per HH vs. HH density

Source: The speaker, 2010




P2P P2P P2P P2P P2P P2P P2P P2P Ethernet+metroEthernet+metroEthernet+metroEthernet+metroEthernet+metroEthernet+metroEthernet+metroEthernet+metro vs. vs. vs. vs. vs. vs. vs. vs. GPON+metroGPON+metroGPON+metroGPON+metroGPON+metroGPON+metroGPON+metroGPON+metro vs. LRvs. LRvs. LRvs. LRvs. LRvs. LRvs. LRvs. LR--------PONPONPONPONPONPONPONPON



Cost comparisons of current (GPON) and next Cost comparisons of current (GPON) and next Cost comparisons of current (GPON) and next Cost comparisons of current (GPON) and next Cost comparisons of current (GPON) and next Cost comparisons of current (GPON) and next Cost comparisons of current (GPON) and next Cost comparisons of current (GPON) and next

generation (WDM/TDMA) generation (WDM/TDMA) generation (WDM/TDMA) generation (WDM/TDMA) generation (WDM/TDMA) generation (WDM/TDMA) generation (WDM/TDMA) generation (WDM/TDMA) PONsPONsPONsPONsPONsPONsPONsPONs with FTTH P2Pwith FTTH P2Pwith FTTH P2Pwith FTTH P2Pwith FTTH P2Pwith FTTH P2Pwith FTTH P2Pwith FTTH P2P

OSP cost

0

500

1000

1500

2000

2500

3000

3500

0 1000 2000 3000 4000 5000 6000 7000

HH Densi ty (HH /Km^2)

Cos

t/H

H (

€)

EP2P & metro

GPON & m etro

SARDANA

Overa ll CAPEX vs. Density

0

500

1000

1500

2000

2500

3000

3500

4000

0 1000 2000 3000 4000 5000 6000 7000HH de nsity (HH/Km^2)

CA

PE

X/H

H (€

)

EP2P & m etro

GPON & metro

SARDANA

� The results show that CAPEX/user range depending on the technology used and that a decrease in the range of 20% can be achieved between EP2P & GPON as well as between GPON and the ring-tree PON.

Source: I. Chatzi et. al., ECOC 2010




Legacy PON vs. NG high splitting ratioLegacy PON vs. NG high splitting ratioLegacy PON vs. NG high splitting ratioLegacy PON vs. NG high splitting ratioLegacy PON vs. NG high splitting ratioLegacy PON vs. NG high splitting ratioLegacy PON vs. NG high splitting ratioLegacy PON vs. NG high splitting ratio--------PONPONPONPONPONPONPONPON



OSP cost comparison of OSP cost comparison of OSP cost comparison of OSP cost comparison of OSP cost comparison of OSP cost comparison of OSP cost comparison of OSP cost comparison of PONsPONsPONsPONsPONsPONsPONsPONs

with increasing splitting ratioswith increasing splitting ratioswith increasing splitting ratioswith increasing splitting ratioswith increasing splitting ratioswith increasing splitting ratioswith increasing splitting ratioswith increasing splitting ratios

Comparative Infrastructure Costs

0

500

1000

1500

2000

2500

0 2000 4000 6000 8000 10000

Households' density (HH/km 2)

CA

PE

X/u

ser (

$)

Splitting ratio 1:16





Source: The speaker, 2010

About 20% savings to be

expected when going from

1:64 to 1:256



SummarySummarySummarySummarySummarySummarySummarySummary

� We presented the main drivers for NGA

� We presented the main NGA architectures and future FTTH technologies

� We presented the main benefits expected from future NG-PON2 deployments

� We discussed issues associated with the outside plant costs of various FTTx solutions and we showed what are the savings to be expected when deploying NG-PON2-like solutions



Thank you for your attention!Thank you for your attention!Thank you for your attention!Thank you for your attention!Thank you for your attention!Thank you for your attention!Thank you for your attention!Thank you for your attention!

For more information contact:[email protected]

techno ----economic evaluation of next generation fttx … · ioannistomkos 1111 dr. ioannis tomkos...

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