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EndowedEndowed byby
Chair of Future CommunicationFaculty of Computer Science
Prof. Dr. K. Tutschku
PhD Course IntroductionPhD Course Introduction
Future Network Architectures and ExperimentationFuture Network Architectures and Experimentation
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endowed by
About Me
– David Stezenbach
– Sep. 2010: Diploma Degree in Computer Science• University of Wuerzburg, Germany
• Focus on network science
• Diploma Thesis on “Implementing & Testing Seamless Gateway Handovers in Wireless Mesh Networks”
– Since Oct. 2010: Research Assistant & PhD Student• University of Vienna, Austria
• Research Group of Future Communication (endowed by A1 Telekom Austria AG)
• Supervisor Prof. Dr. Kurt Tutschku
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endowed by
Virtual Network Concept & Federation
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endowed by
Current Research Topic: FedNet
• Algorithms and Operating. Procedures for Federated Virtualized. Networks (FedNet)
– Euro‐NF/SJRP with University of Aveiro & BTH Sweden
– Current research:• Scaling behavior of virtualized router platform• Identifying effects in the packet stream caused by virtualization
– Future topics:• Derive models of scaling behavior (linear or something else?)• Path behavior with multiple virtualized routers• Video streaming on virtualized routers and links
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endowed by
Current Research Topic: OptFI
• Optimization Challenges in the Operation of the Future, Federated Internet (OptFI)
– Vienna Science, Research and Technology Fund in conjunction with
Vienna University of Technology
– Current topics:• Mapping multiple application slices into a federated shared substrate• Description parameters for slices and the available network resources• Research questions on the Virtual Network Embedding Problem
– Future work:• Evaluate multiple optimization based mapping approaches• Discuss and evaluate tradeoff between optimization time and “return of
investment”• Timeframe of slice mapping and resource continuity
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