“Science meets IT”
- discussion

Ton Koonen
COBRA Institute, Eindhoven Univ. of Technology
a.m.j.koonen@tue.nl


Greening ...
Connected World

                                            fibre
Global Network

                                       ...
Energy footprint of ICT

 E.g. Harvard scientists: “the whole ICT sector produces as much greenhouse gasses
 as all airlin...
Dynamic wavelength routing
   in access networks




                                fibre



       local
       exchange...
Radio over Fibre
                                                           To increase capacity:
                        ...
Today’s in-home networks


Twisted pair copper
                                 Satellite dish/
lines:                    ...
Converged in-home network: with fibre

 integrating wired &
 wireless services:
  less installation and
  maintenance effo...
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Ton Koonen Tu Eindhoven

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Conferentie Greening the Enterprise,
IT Executive, 25 november 2009
Science meets IT
Wat heeft de Nederlandse wetenschap eigenlijk in de naaste toekomst te bieden op het gebied van duurzaamheid. Discussie met Nederlandse topwetenschappers Prof.ir. Ton Koonen en
Prof. dr. ir. Gerard Smit.
Moderator: Roel Croes (mede-oprichter en bestuurslid Stichting GreenICT)
Prof.ir. Ton Koonen (hoogleraar Technische Universiteit Eindhoven)
Prof. dr. ir. Gerard Smit (hoogleraar Universiteit Twente)

Published in: Technology
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Ton Koonen Tu Eindhoven

  1. 1. “Science meets IT” - discussion Ton Koonen COBRA Institute, Eindhoven Univ. of Technology a.m.j.koonen@tue.nl Greening the Enterprise, Utrecht, Nov. 25, 2009 COBRA
  2. 2. Connected World fibre Global Network •• long reach long reach •• high capacity high capacity Metropolitan/Regional Area Optical Network •• fast packet fast packet switching switching Client/Access Cable modem SDH/ ISP SONET •• variety of Networks Networks IP variety of IP/ATM media + media + services services Cable TP FTTH FWA cellular •• personal personal In-home and •• mobility mobility Personal Triple Play •• low power low power mobile •• low cost Networks BAN low cost WLAN sensor Home / Enterprise In-/outdoor wireless amjk 26-11-2009 PAGE 1 © a.m.j. koonen, Nov. 25, 2009 1
  3. 3. Energy footprint of ICT E.g. Harvard scientists: “the whole ICT sector produces as much greenhouse gasses as all airline companies together; 1000 Google searches consume as much energy as driving 1 km with a car” Reduction of energy footprint by Optical communication technologies - optical multi-level signal transport: put more bits into a single transmitted symbol - all-optical packet switching: avoid power-hungry electro-optical conversions in routers - optical interconnects: reduce crosstalk - broadband fibre to the home* : reduce 24/7 power consumption * optical access by Gigabit PON consumes about 18x less energy per user than VDSL2 - radio over fibre: bring the radio antenna closer to the user, reduce radiation power levels - wired/wireless network integration: use a single in-home network to carry wired and wireless services amjk © a.m.j. koonen, Nov. 25, 2009 2
  4. 4. Dynamic wavelength routing in access networks fibre local exchange access network cells hot spot provides capacity-on-demand to cells, optimises utilisation of network resources [a.m.j. koonen, Proc. of the IEEE, May 2006] amjk © a.m.j. koonen, Nov. 25, 2009 3
  5. 5. Radio over Fibre To increase capacity: Smaller cells less users/cell Higher frequencies more BW available Central Controller RG Simplified antenna sites Optical Fibre Huge capacity Energy efficient transmission Light weight Immune to electromagnetic interference → Radio-over-Fibre amjk [courtesy Maria Garcia Larrode] 4 © a.m.j. koonen, Nov. 25, 2009
  6. 6. Today’s in-home networks Twisted pair copper Satellite dish/ lines: FWA dish Telephone, fax, … Coaxial copper lines: (HD)TV CATV, videorec, radio, … laptop Mobile network mobile Cat-5 cables: (GSM, UMTS, …) PC-s, routers, hubs, coax Cat-5 PC printers, servers, … Wireless LAN: O WiFi Tel. Laptops, PDAs、… Optical Fibre network N router mp3 U CATV download Infrared: Coax Cable network fax TP print PDA Twisted Pair network Tel. remote control TV/videorec/radio/… amjk © a.m.j. koonen, Nov. 25, 2009 5
  7. 7. Converged in-home network: with fibre integrating wired & wireless services: less installation and maintenance efforts optical fibre easier introduction and webcam upgrading of services integration e.g. by WDM HDTV laptop Mobile network PC (GSM, UMTS, …) mobile optical fibre VoIP RG Optical Fibre mp3 fax coax network download print PDA POF converged in-home network on SMF Plastic Optical Fibre amjk © a.m.j. koonen, Nov. 25, 2009 6
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