Green Touch™ Initiative: A Five Year Quest to Achieve Sustainable Networking

1. Green Touch™ Initiative:A Five Year Quest to Achieve Sustainable Networking D. Kilper Chair, Techical Committee GreenTouch

2. The Network Energy Gap Traffic Internet Backbone Mobile Data Growing Gap! Mobile Efficiency Wireline Efficiency

3. Business-As-Usual Trends • Model network using state-of-art commercial technology • Account for high and low traffic trends by service • Switching, routing & WDM is small, but growth is unsustainable • Traffic growth: >30%/year • Equipment efficiency: 10%-20%/year High Low Kilper, et. al., IEEE JSTQE 2011

4. AIT AT&T Bell Labs CEA LETI China Mobile Columbia University Draka Dublin City University Emerson Network Energy ETRI Freescale Huawei IBBT IMEC INRIA K. A. Lueven Karlsruhe Institute of Technology King Abdul Aziz for Science and Technology Korea Telecom Politecnico di Milano Samsung Seoul National University Swisscom University of Cambridge University of Leeds University of Maryland University of Melbourne University of New South Wales Waterford Institute of Technology 29 Member Organizations Protocols Circuit Design Network Architectures Transport Advanced Coding GreenTouch Consortium www.greentouch.org Global 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.

5. What is GreenTouch? Broad, open 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, and research on communication networks 5

6. GreenTouch Approach • Bottom Up Research Organization • Use of models to structure and guide research and collaboration • Funding through member contributions & external sources • Gauge impact of innovations on: • Alternative metrics (carbon footprint, network power, embedded energy) • Adjacent technologies (data centers, handsets) • Measure, model and predict energy consumption in ICT networks (equipment trends, traffic, deployment)

7. Consortium 5 Year Goal • Define architectures • Demonstrate tech. Use models for network in 2020 to set technology demonstration requirements

8. Use Architecture Models & Targets to Track Progress • Define architectures and track research results • Identify targets for each architecture and update network efficiency in model as targets are achieved • Working groups define targets and evaluate completion • Targets can be achieved within GreenTouch projects or from broader community • Identify gaps in effort and solicit new activities Goal Remaining targets achieved 12 targets achieved 1 target achieved 3 targets achieved

9. Simple Spreadsheet Models for Each Architecture

10. Modeling Provides Clear Picture of Goals Assumptions: • Baseline year 2010 • Target year 2020 • GreenTouch results in five years: 2015 Efficiency in Mbps/W GreenTouch 5 year Goal: Element efficiency demonstrationtargets for 2015 Overall network efficiencytarget in 2020

11. GreenTouch Organization Executive Board Gee Rittenhouse Technical Committee Dan Kilper, Shugong Xu Operations Committee Thierry V. Landegem, Kevin Kemp Services, Applications Trends Steve Korotky Network Committee Rod Tucker, Man-Fai Wong Working Groups

12. GreenTouch Working Groups Working Groups Access Networks Wireline Access Networks L. Lefevre, F. Effenberger Mobile CommunicationsU. Barth, Jongho Bang, E. Calvanese-Strinati Core Networks Switching and Routing T. Klein, A.Pattavina Optical Networking & Transmission I. Tomkos, J-C Antona

13. Initial Activities Build research program First technology demonstration spring 2011 Establish common reference architecture Define primary research targets Establish expected trends on key metrics to 2020 Provide international forum for cooperation and exchange of ideas on energy research topics 13

14. Seeking Cooperation • Baseline reference architecture • Current power consumption in network • Deployed equipment • Industry averages • Variations between carriers or regions • Energy trends to 2020 • Traffic models • Equipment evolution models • Semiconductor scaling • Technology evolution

15. Green Touch™ Initiative www.greentouch.org