Next generation optical access networks:the OASE viewDirk Breuer, Erik Weis, Ralf Hülsermann, Mario KindDeutsche Telekom L...
OASEIntegrating projet on access addressing technology,techno-econmics, business regulation, standards                    ...
Migration towards FTTHFTTH will remove the access bottleneck.                                                             ...
NGOA – Reducing Total Cost of Ownership.Minimal TCO at still growing bandwidth.                                           ...
Principal interrelationship between network structureand costs in access/aggregation networks.                            ...
NGOA architecturesIdentifying the optimal structure                          Identify architectures with potential for low...
NGOA system technologies        Identify system concepts that meet the requirements for next generation optical access    ...
Feeder link length.Which reach should be provided by NGOA systems?                       Feeder link length = f(# metro ac...
Feeder link fiber demand.The dark side of site darkening - Additional cable required.                      Feeder fiber de...
Key requirements on NGOA network architecture.                                   FTTH residential peak data rates ≥1 Gibt...
Key requirements on NGOA network architecture.Split                               Support of 256 up to 1024 ONUs per feed...
Market environment in Europe.A lot of new players are emerging.     Fiber roll out vs. other access technologies          ...
Fragmented ecosystems will emerge.Chances for co-operations.                                                      New play...
Thank you!Dirk Breuerd.breuer@telekom.deOASE project (www.ict-oase.eu)“The work leading to these results has received fund...
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FTTH Conference 2011 Workshop Next Generation Optical Access Networks Dirk Breuer TELECOM.DE

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FTTH Conference 2011 Workshop Next Generation Optical Access Networks Dirk Breuer TELECOM.DE

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FTTH Conference 2011 Workshop Next Generation Optical Access Networks Dirk Breuer TELECOM.DE

  1. 1. Next generation optical access networks:the OASE viewDirk Breuer, Erik Weis, Ralf Hülsermann, Mario KindDeutsche Telekom LaboratoriesGoslarer Ufer 35, 10589 Berlin, Germanyemail: d.breuer@telekom.deOn behalf of the OASE project teamwww.ict-oase.eu Life is for sharing.
  2. 2. OASEIntegrating projet on access addressing technology,techno-econmics, business regulation, standards Objectives WP2Development and assessment of NGOA Requirements network architectures for the “2020” time for European NGOA networkshorizon focused on Europeanrequirements. 1 Gbps peak 500 Mbps sustainable Technology and architecture  WP5 evolution focusing on minimized Techno‐economic total cost of ownership 1000 customers/feed assessment Supporting new business models  100 km transmission WP6 WP7Target: Experimental validation Business modeling 1 Gbit/s per customer and regulatory aspects > 1000 customers per fiber feed> 100 km transmission distance © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 2
  3. 3. Migration towards FTTHFTTH will remove the access bottleneck. Access /aggregation network migration path Home / Building Cabinet Local Exchange Central Access Node FTTEx Modem DSLAM Aggregation NetworkToday (ADSL2+) FTTCab (VDSL2) Modem DSLAM Aggregation NetworkNear Future FTTB MDU- Modem OLT Aggregation Network ONU FTTH ONT OLT Aggregation Network Access bit rate FTTH -- Optical fiber access: No (practical) limitation in the access bandwidth. © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 3
  4. 4. NGOA – Reducing Total Cost of Ownership.Minimal TCO at still growing bandwidth. Access /aggregation network migration path Home / Building Cabinet Local Exchange Central Access Node FTTEx Modem DSLAM Aggregation NetworkToday (ADSL2+) FTTCab (VDSL2) Modem DSLAM Aggregation NetworkNear Future FTTB MDU- Modem OLT Aggregation Network ONU FTTH ONT OLT Aggregation Network Agg. OASE ONT OLT Net. Access bit rate © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 4
  5. 5. Principal interrelationship between network structureand costs in access/aggregation networks. Find the optimal network structure enabled by optical technology Costs PoP Aggregation Total costs network Aggregation links Feeder link Site costs costs Access Access OLT/ site OLT site AGS ODN costs network Access Feeder links Aggregation link costs Optical Distribution Network / Number of Access sites Customer Premises © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 5
  6. 6. NGOA architecturesIdentifying the optimal structure Identify architectures with potential for lowest total cost of ownership Inhouse First Mile Feeder Aggregation Home Building Cabinet Local Exchange Central access node Core Node Distribution Main Regional Regional cable cable cable cable NT2 NT1 NT2 ? NT1 NT2 OLT NT1 Optimal Location? Edge NT2 Node NT1 NGOA coverage design PON, WDM, AON, PtP, hybrid solution © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 6
  7. 7. NGOA system technologies Identify system concepts that meet the requirements for next generation optical access Fiber  Dedicated Fiber Infrastructure Shared (Feeder) Fiber Infrastructure infrastructure Topology Tree‐based FTTX Ring‐based FTTX Mesh‐based FTTX Architecture Passive Active Remote Node  Hybrid (Filter +  Patch panel Power Splitter WDM Splitter Active RN (RN) Design Splitter) Hybrid  Technology TDM OFDM CDM SCM WDM+XXM WDM Ethernet Realization /  GPON XG‐PON1 XG‐PON2 CWDM Standard DWDM EPON 10G‐EPON UDWDM Which concept offers lowest Total Cost of Ownership? © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 7
  8. 8. Feeder link length.Which reach should be provided by NGOA systems? Feeder link length = f(# metro access nodes) Reach is not the challenge? feeder link length (related to number of households ) 95% quantile  Feeder links length ≤ 40km for majority of households in all scenarios 80% quantile 100 average value shortest backup path Feeder Link Length [km] 80 shortest path  Very long feeder links for a minority of GPON Reach Extender households only 60  For total transmission distance 40 subscriber line length in ODN has to be 20 GPON C+ added (typically < 5km) B+ 0  Typically about (<) 40 km reach are 500 1000 2000 3000 4000 sufficient Number of Central Access Nodes  Protection will require longer reach (2x) © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 8
  9. 9. Feeder link fiber demand.The dark side of site darkening - Additional cable required. Feeder fiber demand = f(# metro access nodes) High splitting is required! point -to-point  Feeder cables are an important additional cost factor 1:32 splitting ratio 1:512 splitting ratio 10 10 protected feeder links  Feeder fiber demand depends on Feeder Fiber Demand [Fiber* km] unprotected feeder links 9 10  Number of Central Access Nodes / 10 8 Feeder link length 7 Total fiber capacity in Germany (BNA)  Feeder fiber multiplexing (splitting) 10 6  Resilience requirements 10 OASE 5 10 4  High splitting ratio is key to reduce 10 500 1000 2000 3000 4000 additional feeder costs Number of Access Nodes  Resilience has to be optimized © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 9
  10. 10. Key requirements on NGOA network architecture.  FTTH residential peak data rates ≥1 Gibt/sPeak data rate  Business, backhaul (fixed, mobile) peak date rate: ≥10 Gbit/s  Average sustainable downstream based on service usage during peak hour 500 Mbit/sSustainable data per Optical Network Units (ONUs)/customersrate  Support of traffic symmetry, at least a ratio of 1:2 between up- and downstreamFeeder capacity  Support of 128 Gbit/s up to 500 Gbit/s aggregate capacity per feeder fiber  Mobile and fixed backhaul, residential and business access (SME) on one platformUniversal access  Mobile Backhaul: Low delay and high synchronization requirementsGreen network  Low power consumptionoperation © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 10
  11. 11. Key requirements on NGOA network architecture.Split  Support of 256 up to 1024 ONUs per feeder fiber  Support of 20 to 40 km passive reach option for the working pathReach  Support of 60 to 90 km extended reach option for the protection path (preferably passive)  Support of redundancy and protection mechanism for service availability and reducedResilience failure impact (e.g. limited number of affected customers)  NGOA system has to work on existing first mile infrastructure (single fiber solution)Migration  NGOA system does not affect deployed systems and the existing used spectra © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 11
  12. 12. Market environment in Europe.A lot of new players are emerging. Fiber roll out vs. other access technologies Investors in FTTH/B in Europe Housing companies and otherGermany 2% Incumbents 22% Italy 12% Municipalities/ UK Utilities 64% Alternative Operators/ISPs EU-27** xDSL coverage Cable modem coverage 3G+ coverage •*DT & BT until 2012, Telecom Italia until 2013 Coverage fibre by incumbent* Source: IDATE for Fibre-to-the-Home Council (2010) •** includes Iceland and Norway Installed FTTB/H connections © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 12
  13. 13. Fragmented ecosystems will emerge.Chances for co-operations. New players on different network layers content Service Provider (SP) application Connectivity Provider (CP) Wholesale Wholesale end2end Transaction costs OSI-layers IP Technical ethernet Regional Network Provider (RNP) Network Access Provider (NAP) Interfaces wavelength Connection (IP) fiber Wholesale Wholesale Connection (Ethernet) duct Connection (Wavelength) Physical Infrastructure Provider (PIP) trench Connection (Fiber) RoW Ducts access backbone (first and second mile) © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 13
  14. 14. Thank you!Dirk Breuerd.breuer@telekom.deOASE project (www.ict-oase.eu)“The work leading to these results has received funding from the European Communitys Seventh FrameworkProgramme (FP7/2007-2013) under grant agreement n° 249025” © Deutsche Telekom AG Proprietary. All rights reserved. No part of this presentation may be reproduced in any material form without the written permission of the copyright owner. Deutsche Telekom Laboratories 15.02.2011 14 14

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