Intervention dans le cadre de Metro'num, la rencontre des services numériques urbains et territoriaux, les 8 & 9 décembre 2011 à Bordeaux

1. GreenTouch Consortium:
Building the Roadmap
Dan Kilper
Chair, GreenTouch Technical Committee
1 GreenTouch | 2011 © 2011 GreenTouch Consortium

2. 2020 ICT Carbon Footprint
820m tons CO2
360m tons CO2
2007 Worldwide ICT
carbon footprint: 2%
= 830 m tons CO2
Comparable to the
global aviation
industry
260m tons CO2
Expected to grow The Climate Group, GeSI
to 4% by 2020 report “Smart 2020”, 2008
2 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

3. Tightening Energy Bottleneck
Bandwidth, Services,
Applications
Capacity limits for
existing technology and Deploying new
by power/thermal efficient equipment
budgets
Energy
Publicly visible good-will
With energy costs sky-
provided by being "Green"
rocketing, increasing share of
Proactive stance in reducing Internet operations cost
greenhouse gas emissions
Cooling is high percentage of
Customers feel better about network power consumption
service provider . . . leading to (20% to 50%)
revenue growth
3 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

4. The Network Energy Gap
50
40 Mobile Traffic Internet
Data Backbone
30
Growth
Growing Gap!
20 Mobile
Efficiency
10
Wireline
Efficiency
2005 2010 2015 2020
Year Kilper, et. al., IEEE JSTQE 2011
4 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

5. Ideal Efficiency Improvements on BAU: Flat in 2020
Improving network efficiency at best keeps power consumption flat
over next decade
What happens after 2020?
Can only use ‘sleep modes’ once
100 BAU Current technology will only
Power/User (W)
sustain us for another decade:
how do we go beyond?
10
Optimistic
Improvements
1
2008 2010 2012 2014 2016 2018 2020
Year

6. ICT Industry Responds
First Step: metrics, awareness, standards, call to action
Global e-Sustainability Initiative (GeSI)
ITU-T
GreenGrid
Semiconductor Industry
Already Organized for the
Long View:
Next Step: cooperation, action ITRS 15 years out
EARTH: LTE 2x
Mobile VCE: Green Radio 100x
Institute for Energy Efficiency: Wireless and optical 100x
GreenTouch: ICT Networks 1000x
6 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

7. What is GreenTouch?
GreenTouch Mission
By 2015, our goal is to deliver the architecture, specifications and
roadmap — and demonstrate key components — needed to increase
network energy efficiency by a factor of 1000 from current levels.
Broad, open and global consortium executing research projects to
achieve aggressive goal
Roadmap organization establishing reference architectures and
research targets to overcome major challenges facing network
scaling and energy
Venue for cooperation and enabling demonstrations among research
organizations
Forum for the exchange of information on energy trends,
challenges, & research on communication networks
7 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

8. GreenTouch Members
AT&T Services France Telecom Swisscom
Athens Information Freescale Semiconductor TNO
Technology (AIT) Center Fujitsu Tsinghua University
for Research & Education Huawei TTI
Bell Labs, Alcatel-Lucent IBBT TU Dresden
Broadcom IMEC University College London
Carnegie Mellon INRIA University of Cambridge
University
CEA-LETI Applied KAIST University of Delaware
Research Institute for Karlsruhe Institute of University of L’Aquila
Microelectronics Technology University of Leeds
China Mobile Katholieke Universiteit University of Manchester
Chunghwa Telecom Leuven (K.U. Leuven) University of Maryland
Columbia University King Abdulaziz City for University of Melbourne’s
Science and Technology Institute for a Broadband-
Commscope/Andrew KT Corporation
Draka Communications Enabled Society (IBES)
National ICTA Australia University of New South
Dublin City University Nippon Telegraph and Wales
ETRI Telephone Corp University of Paderborn
ES Network/Lawrence Politecnico di Torino University of Rochester
Berkeley Labs Portugal Telecom
Fondazione Politecnico di University of Toronto
Inovação, S.A. Waterford Institute of
Milano Samsung (SAIT)
Fraunhofer-Geselleschaft Technology
Seoul National University ZTE
8 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

9. GreenTouch Working Groups
Working
Groups
Access Networks
Wireline Access Mobile Communications Core Networks
Networks
Optical Networking & Switching
Transmission and Routing
9 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

10. Some Research Projects…
Beyond Cellular – Green Mobile Networks
Virtual Home Gateway
Optimal End-to-End Resource Allocation
Service Energy Aware Optical Networks Steady
Green Transmission Technologies flow of
new
Minimum Energy Access Architectures
Projects
Single-Chip Linecards & coop.
Large-Scale Antenna Systems activities
Highly-Adaptive Layer Mesh Networks
Massive MIMO
10 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

11. New Approaches: Focus on Energy
New devices
• Analog vs digital, best use of optics and electronics
• Old ideas finding new life: large scale MIMO
New architectures
• trade-off transmission/bandwidth and processing, distributed versus
centralized
New protocols
• Longer packet sizes or no packets at all for certain applications
Service optimized networks
• Move away from one size fits all—use most energy efficiency hardware for
the service
• Coordinate service delivery/applications with network hardware operation
Restructuring layers, architectures, feature options
• How much do way pay in energy for convenience? duplicated functions (FEC)?
• What technologies do we really need in order to support the essential
capabilities?
11 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

12. Minimizing Processing
Repetition
• Unnecessary router hops
• Inter-operator exchange Separate what is
• Multiple transmissions needed from what
Remove processing from the data path is convenience
• Separate control channel?
Focus on Service
• Content delivery vs. browsing vs messaging
Push to the edges
• FEC
• Security, policy processing
Simplified Addressing
• Geographic addressing/binary switching
12 GreenTouch : Building the Roadmap | 2011
© 2011 GreenTouch Consortium

13. Thank You
www.greentouch.org
13 GreenTouch : Building the Roadmap | 2011 © 2011 GreenTouch Consortium