Collaborations with University of Coimbra and Budapest University of Technology and Economics

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1 Energy Efficiency in Large Scale Distributed Systems Collaborations with University of Coimbra and Budapest University of Technology and Economics Torsten Braun, Universität Bern, Switzerland cds.unibe.ch

STSM U Bern U Coimbra > ECOST reference: COST-STSM-IC0804-8283 > Researcher: Thomas Staub, U Bern >

2 STSM U Bern U Coimbra > ECOST reference: COST-STSM-IC > Researcher: Thomas Staub, U Bern > Visited Institute: U Coimbra > Dates: June 24-30, 2011 > Topic: Energy Measurements of Wireless Network Devices

3 STSM Motivation and Results > Motivation U Bern with strong experience in energy consumption measurement and estimation techniques U Coimbra with strong experience in heterogeneous network technologies (WiFi, WiMAX) as well as test-beds. > Results Development of an Energy Consumption Measurement Methodology for WiFi and WiMAX end system equipment Measurements in WiFi and WiMax test-beds, e.g., for calibration of simulation models and development of energy-saving mechanisms Publication at IEEE NCCA 2011

4 IEEE NCCA 2011 V. Bernardo, M. Curado, Th. Staub, T. Braun: Towards Energy Consumption Measurement in a Cloud Computing Wireless Testbed, 1st IEEE International Symposium on Network Cloud Computing and Applications, November 21-23, 2011, Toulouse

IEEE ICC WorkShop NovaEnEv 2012 V. Bernardo, M.

Energy Measurement and Evaluation in Wireless

5 IEEE ICC WorkShop NovaEnEv 2012 V. Bernardo, M. Curado: A Methodology for Assessing Video Transmission Energy Consumption and Quality, International Workshop on Novel approaches to Energy Measurement and Evaluation in Wireless Networks, co-located with ICC 2012, June 10, 2012, Ottawa

Tran-Gia: Evaluating the Trade-off Between Energy Efficiency and QoE in Wireless Mesh

6 ICCE 2012 D. Hock, V. Bernardo, Th. Zinner, F. Wamser, K. Hummel, M. Curado, R. Pries, T. Braun, P. Tran-Gia: Evaluating the Trade-off Between Energy Efficiency and QoE in Wireless Mesh Networks, 4th International Conference on Communications and Electronics (ICCE'12), Special Session on Energy-Efficient Networking, August 1-3, 2012, Royal city of Hue, Vietnam

11 Energy Efficiency for Continuous Media

7 EE-LSDS 2013 V. Bernardo, M. Curado, T. Braun: Enhancing IEEE Energy Efficiency for Continuous Media Applications, Energy Efficiency in Large Scale Distributed Systems, April 22-24, 2013, Vienna

8 Other Issues about Collaboration with U Coimbra > Additional visits of Vitor Bernardo (U Coimbra) at U Bern February 21 March 4, 2011 February 13 March 30, 2012 August 24 September 14, 2013 > Sabbatical of Prof. Marilia Curado (U Coimbra) at Bern and M.Sc. lecture > > > > on Network Performance and Modelling, Spring Semester 2013 Co-supervision of Vitor Bernardo s thesis by Proff. Curado and Braun, expected defence in 2014 Vitor Bernardo attended training school in Palma de Mallorca in 2012 Collaboration with COST Action IC 0906 Wireless Networking for Moving Objects 20th International Workshop on Quality-of-Service (IWQoS), 2012 General Co-Chairs: F. Boavida and M. Curado (U Coimbra), Program Co-Chairs: T. Braun (U Bern) and E. Monteiro (U Coimbra) > Common EU FP7 Integrated Project mobile-cloud-networking.eu

9 EU FP7 Integrated Project: mobile-cloud-networking.eu > Integration of Radio Access Network Mobile Core Network Data Centre (computing, storage, applications) into (decentralized) cloud computing infrastructure (management!) > Advantages: elasticity, costs, performance, e.g., by exploitation of user location for service provisioning Follow Me Cloud

STSM BME U Bern > ECOST reference: COST-STSM-IC0804-11268 > Researcher: Prof.

10 STSM BME U Bern > ECOST reference: COST-STSM-IC > Researcher: Prof. Tuan Anh Trinh, Budapest University of Technology and Economics (BME) > Visited Institute: U Bern > Dates: August 11 September 30, 2012 > Topic: Energy Efficiency in Information-Centric Networking

11 Information-Centric Networking /unibe.ch/braun/lecture/os/

12 STSM Motivation and Results > Motivation U Bern with strong experience in Information-Centric Networking (ICN) BME with strong experience in energy efficiency of large scale distributed systems, energy efficient data center design, sustainability issues of the Future Internet, etc. > Results and Activities Theoretical analysis of ICN energy saving potential given that ICN can save network transmissions by caching Identification of open research issues Publication at EE-LSDS 2013 T. Braun, T. Anh Trinh: Energy Efficiency Issues in InformationCentric Networking, Energy Efficiency in Large Scale Distributed Systems, Work in Progress Session, April 22-14, 2013, Vienna

13 Other Issues about Collaboration with BME > Talks and Visits by Tuan Anh Trinh Université de Neuchâtel (Peter Kropf) Talk on Recent Advances in EE of Large-scale Networked Systems at ETH Zürich (Karin Hummel) > Planned Sabbatical and M.Sc. Lecture by Tuan Anh Trinh at U Bern in Autumn Semester 2013

14 Conclusions and Outlook > STSMs have been stimulating research collaboration between U Bern and U Coimbra as well as BME, e.g., Joint Ph.D. student supervision Joint publications Exchange of researchers, e.g., sabbaticals, and teachers EU collaboration projects > COST funding has only covered a small part of collaboration costs.

15 Thanks for your Attention > More information cds.unibe.ch slideshare.net/torstenbraun

Evaluating the Trade-off Between Energy Efficiency and QoE in Wireless Mesh Networks

Evaluating the Trade-off Between Energy Efficiency and QoE in Wireless Mesh Networks David Hock, Vitor Bernardo, Thomas Zinner, Florian Wamser, Karin A. Hummel, Marilia Curado, Rastin Pries, Torsten Braun,