Ton Koonen Tu Eindhoven
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The document discusses advancements in optical communication technologies to reduce the energy footprint of ICT, highlighting that the sector emits as much greenhouse gases as airlines. It presents strategies like all-optical packet switching and broadband fibre to the home, which significantly lower power consumption. Additionally, it advocates for the integration of wired and wireless networks to optimize resource utilization and enhance service delivery.
![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](https://image.slidesharecdn.com/greeningtheenterprisetonkoonentueindhoven-091127053710-phpapp02/85/Ton-Koonen-Tu-Eindhoven-4-320.jpg)
![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](https://image.slidesharecdn.com/greeningtheenterprisetonkoonentueindhoven-091127053710-phpapp02/85/Ton-Koonen-Tu-Eindhoven-5-320.jpg)
Ton Koonen Tu Eindhoven
- 1. “Science meets IT” - discussion Ton Koonen COBRA Institute, Eindhoven Univ. of Technology [email protected] Greening the Enterprise, Utrecht, Nov. 25, 2009 COBRA
- 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. 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. 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. 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. 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. 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