Research

Peer-to-peer (P2P) technologies are becoming the new paradigm for large-scale content distribution and communication architectures on the Internet. They have the potential to scale up with the size of future ubiquitous computing networks. However, on their way towards mission-critical usages, the mappings onto both the underlying network constraints and the application requirements on top must be improved. The peer-to-peer group focuses its work on algorithms and mechanisms for improving the quality of peer-to-peer systems in the areas of P2P content distribution and communication.

We are currently involved in the following projects. For individual dissertation topics, please see the project pages.

 QuaP2P -- Improving quality of peer-to-peer systems

We are part of the Research Unit FOR 733 funded by DFG. This project aims at improving the quality of peer-to-peer systems by investigating different quality metrics, such as efficiency, adaptability, validity, and trust. Our work on the project is concentrated on two axes. On one axis, we investigate algorithms and mechanisms for improving the dependability of P2P systems, and on the other one, we look at including context information into P2P systems to improve their flexibility. Furthermore, we are also coordinating the emergency response demonstration scenario in the main project. 

• 1.11.2006: We are looking for HiWis. Please contact us for more information.
• 31.10.2006: Beer-to-Beer: Official kickoff event of QuaP2P.

Group Leader

• Prof. Dr. Jussi Kangasharju

Research Staff

• Dirk Bradler Doctoral researcher working on QuaP2P
• Julian Schröder-Bernhardi Doctoral researcher working on QuaP2P

Students

• Max Bruchmann
• Andreas Görlitz
• Christian Groß
• Patrick Hein
• Max Lehn
• Mu Mu
• Uwe Schmidt

This is a list of some selected publications from our research. Full list of our publications is available in our publication database.

• J. Kangasharju, K. W. Ross, D. A Turner, Optimizing File Availability in P2P Content Distribution, In IEEE Infocom, May 2007
• J. Kangasharju, U. Schmidt, D. Bradler, J. Schröder-Bernhardi, ChunkSim: Simulating Peer-to-Peer Content Distribution, In 10th Computer Networking Simulation Symposium, March 2007
• J. Kangasharju, J. Kangasharju, An Optimal Basis for Efficient Peer-to-Peer Content Distribution. In: Proceedings of 15th International Conference on Computer Communications and Networking. Wu-Chun Feng, Katherine Guo, E. K. Park (Eds.). pp. 481-486, IEEE Press, New York, NY, 2006.
• J. Kangasharju, K. W. Ross, D. A. Turner, Adaptive Content Management in Structured P2P Communities. In: Proceedings of the 1st international conference on Scalable information systems, Vol. 152. pp. CD-ROM Proceedings, ACM Press, New York, NY, 2006. ISBN 1-59593-428-6
• S. Das, J. Kangasharju, Evaluation of Network Impact of Content Distribution Mechanisms. In: Proceedings of the 1st international conference on Scalable information systems, Vol. 152. pp. CD-ROM Proceedings, ACM Press, New York, NY, 2006. ISBN 1-59593-428-6.