1. Computer Networks & Distributed Systems @ University of Bern Torsten Braun Institute of Computer Science and Applied Mathematics Universität Bern braun@iam.unibe.ch

2. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 2 University of Bern 12000 students Main faculties Law Economics and Social Sciences Medicine Humanities Human Sciences Science (1950 students) – Computer Science (230 + 170 students) – Mathematics – Physics – Chemistry – Geo Sciences – Biology

3. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 3 IAM Research Groups Computational Geometrie and Graphics (Bieri) Theoretical Computer Science and Logic (Jäger) Software Composition (Nierstrasz) Computer Networks and Distributed Systems (Braun) Computer Visions and Artificial Intelligence (Bunke)

4. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 4 Teaching Bachelor Lectures Computer Networks Operating Systems Master Lectures Sensor Networks Mobile Communications Multimedia Communications

5. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 5 Research Topics Multimedia Communications Overlay Networks / P2P Multicast Distance Learning Security Architectures for Distributed Laboratories Content Production Wireless Networks Wireless Sensor Networks Wireless Mesh Networks MICS

6. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 6 E-Learning Distance Learning: On-line lectures including practical exercises VITELS (computer networks), www.vitels.chwww.vitels.ch OSlab (operating systems), www.oslab.chwww.oslab.ch Mobile Learning

7. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 7 Overlay Networks Peer-to-Peer Multicast IP Multicast applications over overlay networks (www.euqos.org)www.euqos.org Overlay Creation and Quality-of-Service (QoS) End-to-End Distance / QoS estimation based on clustering Construction of efficient overlay network structures TBD: mobility Internet Overlay connections

8. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 8 Wireless Mesh Networks Configuration and Management of Wireless Mesh Networks (WMN) Multi-Path Transmission of Multimedia Data over WMNs Internet Wireless Mesh Router Base station End systems

9. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 9 Wireless Sensor Networks Intensity-based Object Localization and Tracking Implementation & Evaluation of Medium Access Control Protocols Transport Protocols Management sink Internet sensor nodes user

10. September 12, 2006 Torsten Braun: Computer Networks & Distributed Systems @ University of Bern 10 Related Research Interests Mobile multimedia applications and communication systems Multimedia applications and services in wireless mesh networks Mobile Peer-to-Peer Systems Management of wireless sensors and mesh nodes Context-sensitive applications and location-based services Sensor network applications and communication systems