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The rising costs of energy and world-wide desire to reduce CO2 emissions has led to an increased concern over the energy efficiency of information and communication technology. Whilst much of this concern has focused on data centres, office environments (and the computing equipment that they contain) have also been identified as a significant consumer of energy. Office environments offer great potential for energy savings, given that computing equipment often remains powered for 24 h per day, and for a large part of this period is underutilised or idle. This paper proposes an energy-efficient office management approach based on resource virtualization, power management, and resource sharing. Evaluations indicate that about 75% energy savings are achievable in office environments without a significant interruption of provided services. A core element of this office management is a peer-to-peer network that interconnects office hosts, achieves addressing and mediation, and manages energy efficiency within the office environment. Several peer-to-peer approaches are suggested and discussed in this paper. Two of the approaches are evaluated, based on a discrete-event simulation.

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl, H. Meer

Integration of Mobile Devices into Popular Peer-to-Peer Networks

Proceedings of the 5th Euro-NGI Conference on Next Generation Internet Networks (July 1-3, 2009; Aveiro, Portugal), Piscataway, NJ

2009

ISBN: 978-1-4244-4244-7

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

J. Rubio-Loyola, J. Serrat, A. Astorga, Andreas Fischer, Andreas Berl, H. Meer, G. Koumoutsos

A Viewpoint of the Network Management Paradigm for Future Internet Networks

Proceedings of the 1st IFIP/IEEE International Workshop on Management of the Future Internet (ManFI 2009)

2009

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl, H. Hlavacs, R. Weidlich, M. Schrank, H. Meer

Network Virtualization in Future Home Environments

Integrated management of systems, services, processes and people in IT, Berlin [u.a.], vol. 5841

2009

ISBN: 978-3-642-04988-0

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl, H. Meer

An Energy-Efficient Distributed Office Environment

Proceedings of the 1st International Conference on Emerging Network Intelligence (EMERGING 2009); includes the 5th European Conference on Universal Multiservice Networks (ECUMN 2009)

2009

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl, H. Meer, T. Hoßfeld

P2P Solutions for Cellular Networks

Proceedings of the 1st International Conference on Advances in P2P Systems (AP2PS 2009)

2009

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

K. Tutschku, Andreas Berl, T. Hoßfeld, H. Meer

Mobile P2P in Cellular Networks: Architecture and Performance

Mobile peer-to-peer computing for next generation distributed environments, Hershey, PA

2009

ISBN: 9781605667157

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

A. Galis, S. Denazis, A. Bassi, P. Giacomin, Andreas Berl, Andreas Fischer, H. Meer, J. Strassner, S. Davy, D. Macedo, G. Pujolle, J. Rubio-Loyola, J. Serrat, L. Lefevre, A. Cheniour

Management Architecture and Systems for Future Internet Networks

Towards the Future Internet, Washington, DC

2009

ISBN: 978-1607500070

F: Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl, Andreas Fischer, H. Meer

Using System Virtualization to Create Virtualized Networks

Electronic Communications of the EASST (Workshops der Wissenschaftlichen Konferenz Kommunikation in Verteilten Systemen (WowKiVS2009), vol. 17, pp. 1-12

2009

Abstract anzeigen

The method of system virtualization is very popular for the use in data centers and desktop virtualization today. In this work, system virtualization is applied to core network elements (routers and links) in order to create a virtualized network. The selection of this virtualization method crucially determines the emerging network model. The network model consists of virtual networks, virtual routers, and virtual links that form overlays on top of the physical network. The properties, features, and limitations of this network model are analyzed and described in this paper. Additionally, a proof of concept implementation using currently available technology and infrastructure is presented. Finally the dynamic configurability of virtual resources in such a system virtualization based virtualized network is evaluated.

F: Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl, E. Gelenbe, M. Di Girolamo, H. Giuliani, H. Meer, M. Quan Dang, K. Pentikousis

Energy-Efficient Cloud Computing

The Computer Journal, no. Advance Access Publication, pp. 1-7

2009

Abstract anzeigen

Energy efficiency is increasingly important for future information and communication technologies (ICT), because the increased usage of ICT, together with increasing energy costs and the need to reduce green house gas emissions call for energy-efficient technologies that decrease the overall energy consumption of computation, storage and communications. Cloud computing has recently received considerable attention, as a promising approach for delivering ICT services by improving the utilization of data centre resources. In principle, cloud computing can be an inherently energy-efficient technology for ICT provided that its potential for significant energy savings that have so far focused on hardware aspects, can be fully explored with respect to system operation and networking aspects. Thus this paper, in the context of cloud computing, reviews the usage of methods and technologies currently used for energy-efficient operation of computer hardware and network infrastructure. After surveying some of the current best practice and relevant literature in this area, this paper identifies some of the remaining key research challenges that arise when such energy-saving techniques are extended for use in cloud computing environments.

F: Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl, H. Meer, H. Hlavacs, T. Treutner

Virtualization in Energy-Efficient Future Home Environments

IEEE Communications Magazine, vol. 47, no. Dezember, pp. 62-67

2009

Abstract anzeigen

Home environments promise high potential in terms of resource sharing and energy saving. More and more home computers are running on an always-on basis (e.g., media centers or file sharing clients). Such home environments have not been sufficiently analyzed regarding the possibility of aggregating home user resources in an energy-efficient way. This article describes a future home environment in which available hardware resources (e.g., CPU cycles, disk space, or network capacity) are shared energy efficiently and balanced among end users. Furthermore, the article provides an overview of different virtualization methods that are needed in future home environments to enable cooperation of home networks. Virtualization-related requirements are discussed in detail and virtualization methods and concepts are compared to each other with respect to their usability in the architecture.

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

S. Davy, C. Fahy, L. Griffin, Z. Boudjemil, Andreas Berl, Andreas Fischer, H. Meer, J. Strassner

Towards a Policy-Based Autonomic Virtual Network to Support Differentiated Security Services

Proceedings of the International Conference on Telecommunications and Multimedia (TEMU 2008) [July 16-18, 2008; Ierapetra, Crete, Greece]

2008

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

H. Hlavacs, K. Hummel, R. Weidlich, A. Houyou, Andreas Berl, H. Meer

Energy Efficiency in Future Home Environments: A Distributed Approach

Home networking, New York, vol. 256

2008

ISBN: 978-0-387-77216-5

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

A. Garcia, Andreas Berl, K. Hummel, R. Weidlich, A. Houyou, K. Hackbarth, H. Meer, H. Hlavacs

An Economical Cost Model for fair resource sharing in Virtual Home Environments

Proceedings of the 4th Euro-NGI International Conference on Next Generation Internet Networks (NGI 2008)

2008

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

C. Fahy, S. Davy, Z. Boudjemil, Van der Meer, S., J. Rubio-Loyola, J. Serrat, J. Strassner, Andreas Berl, H. Meer, D. Macedo

Towards an Information Model That Supports Service-Aware, Self-Managing Virtual Resources

Modelling Autonomic Communications Environments - Proceedings of the 3rd IEEE international workshop, MACE 2008 (September 22-26, 2008; Samos Island, Greece), Berlin, vol. 5276

2008

ISBN: 978-3540873549

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

L. Cheng, A. Galis, B. Mathieu, K. Jean, R. Ocampo, L. Mamatas, J. Rubio-Loyola, J. Serrat, Andreas Berl, H. Meer, S. Davy, Z. Movahedi, L. Lefevre

Self-organising Management Overlays for Future Internet Services

Modelling Autonomic Communications Environments - Proceedings of the 3rd IEEE international workshop, MACE 2008 (September 22-26, 2008; Samos Island, Greece), Berlin, vol. 5276

2008

ISBN: 978-3540873549

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl, Andreas Fischer, H. Meer, A. Galis, J. Rubio-Loyola

Management of Virtual Networks

Middleware technologies for enabling next generation network services and applications (Samos Island, Greece, 22nd - 26th September 2008; Proceedings of the 5th International Workshop on Next Generation Networking Middleware (NGNM 2008) and 4th IEEE/IFIP International Workshop on End-to-end Virtualization and Grid Management (EVGM 2008)), Schöneiche bei Berlin, vol. No. 9

2008

ISBN: 978-3930736126

F: Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Fischer, Andreas Berl, H. Meer

Virtual Network Management with XEN

Tagungsband Herbsttreffen 2008 der GI/VTG Fachgruppe Betriebssysteme und KuVS (Oktober 2008; Garching)

2008

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