EU FP7 EARTH Energy Aware Radio and network technologies
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1 EU FP7 EARTH Energy Aware Radio and network technologies FP7 utolsó K+F+I pályázati lehetőségek Információs Nap Budapest, szeptember 17. Vidács Attila, BME Távközlési és Médiainformatikai Tanszék Copyright EARTH Energy Aware Radio network techhnologies. technologies. All All Rights reserved. 1
2 Outline Project facts Motivation of EARTH EARTH mission, challenges EARTH in a nutshell / approach, goals Main concepts, BME s contribution Future Internet Award Copyright 2008 EARTH Energy Aware Radio network techhnologies. All Rights reserved. 2
3 FP7 project EARTH 15 Partners from 10 European countries Funding Scheme: IP Total Cost: 14.8 m EC Contribution: 9.5 m Duration: January June 2012 Project Coordinator: Dietrich Zeller, Alcatel-Lucent Technical Manager: Magnus Olsson, Ericsson EARTH PROJECT 2011 Copyright 2011 EARTH Energy Aware Radio network technologies. All Rights reserved. 3
4 Motivation of EARTH Today ICT CO 2 contribution equals global air traffic contribution. Wireless communication approx. 15% of ICT. Mobile Broadband traffic is exploding and entering new markets. Densification of mobile networks /additional roll-out Increasing network operational costs due to increasing energy costs Current growth is not sustainable. Economical operation of networks must be ensured. Copyright 2008 EARTH Energy Aware Radio network techhnologies. All Rights reserved. 4
5 EARTH mission (I): Driving down energy consumption in RAN PST Internet Gateway (PDG, GGSN) Network Server (SGSN, HLR) Base Station Media Server (IMS) Mobile Core Network Access Network Energy Consumption (CO 2 -contribution) 10-20% 70-80% 2-10% reduce by 50% Focus on present and future mobile cellular networks (LTE, ) EARTH PROJECT 2011 Copyright 2011 EARTH Energy Aware Radio network technologies. All Rights reserved. 5
6 Fundamental challenges Lessons learned from EARTH energy efficiency analysis High loads sustainable growth challenge Squeeze more bits through an already busy network without an increase in energy consumption Improve energy efficiency [Joule/bit] Already thoroughly investigated Improvement 300 times over the last 15 years Challenge to keep up with this trend in a subject well understood Low loads scale power consumption to network load On average more than 90% of radio resources are idle Yet only modest reduction in energy consumption of 20% with respect to maximum load Energy efficiency severely degrades at low loads Vast potential for energy savings in particular at low loads * G. Auer, et al., How much energy is needed to run a wireless network?, IEEE Wireless Communications Magazine, to appear 2011 EARTH PROJECT 2011 Copyright 2011 EARTH Energy Aware Radio network technologies. All Rights reserved. 6
7 Our approach/goals Holistic Approach to Energy Efficiency (EE) of 4G Radio Communications Limits & metrics Deployment scenarios Efficiency Metrics multi-hop Deployment & Architecture Network & Resource Management RRM for EE -> transmission EE Radio Technologies and Components EE Enhancements of Transmission Minimize Tx Power (for low load & per bit!) Traffic patterns, User densities Limits, constraints Framework to quantify attainable gains of new solutions small cells EE Network layout overlay macro cell Relays and cooperative BS joint RRM Algorithms Protocols Zzz Traffic adaptive network -> low load EE Traffic scalable Power Consumption (BS, TRx, ), Power Management Adaptable antenna matching networks Approximate Power Consumption proportional Traffic Integrated Solution Validation in testbed / simulations Dissemination & Standardisation Copyright 2008 EARTH Energy Aware Radio network techhnologies. All Rights reserved. 7
8 EARTH in a Nutshell RTD challenges and work WP2 Energy efficiency analysis, metrics and targets Socio-economic impact Reference scenarios Deployment strategies Cooperation schemes PHY layer parameters Transceiver architectures c Life cycle analysis CO 2 emissions Key levers Trends and impacts Traffic patterns User densities Higher layer strategies Metrics, analysis, and targets Global metric Circuitry PHY layer MAC / higher layers Tx Rx Signal Signalling processing Access scheme System level Cooperation Component level EE metrics on system level Adequate utility functions Optimization framework Parameter studies Analytical optimization Breakdown of targets Energy consumption Spectral efficiency QoS requirements Copyright 2008 EARTH Energy Aware Radio network techhnologies. All Rights reserved. 8
9 EARTH in a Nutshell RTD challenges and work Work Package 3 : Green Network Management Deployment Management RRM New Architecture overlay macro cell multi-rat Zzz Adaptive backhaul small cells EE topology relays EE adaptive cov./cap. EE joint RRM multi-hop Future EE architectures Deployment scenarios: Management algorithms: RRM algorithms : Disruptive approaches: - optimum cell size - mix of cell sizes - hierarchical deployment - multi-rat deployments - relays & repeaters - coverage adjustment - capacity management - Multi-RAT coordination - base station sleep mode - prototype protocol design - cooperative scheduling - interference coordination - joint power allocation and resource allocation - EE vs spectral efficiency - multi-hop transmission - adhoc networks - terminal-terminal-transmission - cooperative multipoint arch. - EE adaptive backhauling Copyright 2008 EARTH Energy Aware Radio network techhnologies. All Rights reserved. 9
10 EARTH concepts at a glance (I) Deployment: Relays nodes, Multi RAT, Heterogeneous Networks Major findings: Serve high traffic by adaptive HetNets or densified macro cells that can be switched off in low traffic hours Relaying is most energy efficient in supporting cell edge users of large macro-cells with a hybrid forwarding 2-hop transmission scheme In multi-rat environments, utilize legacy networks in low traffic hours EARTH PROJECT 2011 Copyright 2011 EARTH Energy Aware Radio network technologies. All Rights reserved. 10
11 EARTH concepts at a glance (II) Network Management: Adaptive NW configuration, BS cooperation 00.00hrs Saved energy 12.00hrs Telecom traffic 24.00hrs H i g h L o w Traffic (a) (b) (c) (d) (e) Freq. Freq. Major findings: Adapt the network configurations according to the daily variation of traffic Improve cell-edge communication with pre-selected groups of two or three cooperating BSs EARTH PROJECT 2011 Copyright 2011 EARTH Energy Aware Radio network technologies. All Rights reserved. 11
12 EARTH concepts at a glance (III) Future Architecture: Designing the ultimate energy lean mobile radio system Major findings: De-couple system information and data coverage very promising idea Apply multi-hop coverage extension in highway scenarios and less populated areas Spare number of transmissions by applying network coding either in data link or physical layer EARTH PROJECT 2011 Copyright 2011 EARTH Energy Aware Radio network technologies. All Rights reserved. 12
13 How does it all fit together? population density red: high traffic (busy-hour) blue: low/medium traffic dense urban urban Beamforming (fast) MIMO precoding Cell DTX (long) BW adaptation (slow) Macro-cell mgmt Multi-RAT mgmt Small-cell mgmt MIMO muting Beamforming (slow) Multi RAT depl. Small cell dpl. Active antennas Low loss antennas Macro cell hw Small cell hw suburban rural wilderness BS cooperation BW adaptation (fast) Cell DTX (micro) Power control Scheduling (fast) Scheduling (statistics) Macro-cell mgmt Multi-RAT mgmt Relay mgmt MIMO muting Multi RAT depl. Relay depl. Macro cell hw msec sec min hour day month year timescale EARTH PROJECT 2011 Copyright 2011 EARTH Energy Aware Radio network technologies. All Rights reserved. 13
14 Future Internet Award EARTH has won the prestigious 4 th Future Internet Award, Future Internet Week, Aalborg, 7-11 May 2012 EARTH was announced as the winning project out of 36 applications. "The ICT sector is growing but its carbon footprint should not follow. I congratulate the partners of the EARTH project who have found ways to deliver the services we need while reducing CO2 emissions and cutting down on energy bills." (Neelie Kroes, EC Vice President) Copyright 2008 EARTH Energy Aware Radio network techhnologies. All Rights reserved. 14
15 Thank you Copyright EARTH Energy Engergy Aware Radio network techhnologies. technologies. All Rights reserved. 15
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