Peer-to-Peer Networks for Mobile Communications and Multicast Support

Prof. Torsten Braun

University of Bern, Switzerland


The talk addresses the usage of Peer-to-Peer (P2P) network technology for two kinds of applications. First, we show an architecture inspired by P2P mechanisms for efficient authentication of mobile users. P2P like searches are used to locate and retrieve security information required for mobile user authentication. Simulations show the benefit of this approach. In the second part, we propose the idea of explicit routing in multicast overlay networks. We present a novel algorithm for computing a set of backup trees for each link of a given spanning tree that is used for routing in multicast overlay networks. The algorithm can be used for failure recovery, load balancing and efficient group key distribution.

Short Bio

Torsten Braun got his diploma and Ph.D. degrees from the University of Karlsruhe, Germany, in 1990 and 1993, respectively. From 1994 to 1995 he was a guest scientist with INRIA Sophia Antipolis. From 1995 to 1997 he worked at the IBM European Networking Center, Heidelberg, Germany, at the end as a project leader and senior consultant. Since 1998 he has been a full professor of computer science at the Institute of Computer Science and Applied Mathematics (University of Bern, Switzerland), heading the Computer Networks and Distributed Systems research group. He is a member of the foundation council of SWITCH, the Swiss national research network. He is spending his sabbatical at INIRA Sophia Antipolis from February to May 2004.

[Prof. Torsten Braun]
[University of Bern, Switzerland]