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February 15, Halmstad Colloquium talk
Professor Hillol Kargupta, Agnik and Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore, USA on
Big Data Analytics for Connected Cars
February 10, Seminar: Software Defined Networking for the Wireless Internet
Andreas Kassler from Karlstad University
Mesh Networks provide wireless broadband access for e.g. city centers, university campus or hospitals. They are composed of wireless access points (APs), which forward data generated by users to other users or Internet connection points. A user device usually connects to the AP that provides the strongest signal, as such signal should guarantee the best quality of service. However, this connection policy may lead to: 1) unfairness towards users that are distant from the Internet connection points; 2) inefficient usage of network resources, as some access points may be congested while others are underused. We present a new optimization model and solution approach to the problem of fairly assigning users to access points and routing the generated traffic within the mesh network with the objective of maximizing throughput. We use OpenFlow together with standards such as 802.21 in order to control such associations from the network provider view. A network controller solves in realtime the optimization algorithms and devises Openflow rules which are used to steer the traffic in the mesh network. The demonsystem was implemented and tested both in a multiradio testbed in Karlstad/Sweden and in Berlin. Especially the usage of OpenFlow in the Wireless Area provides several benefits, which this presentation will highlight using different solution approaches.
Andreas J. Kassler is Professor of Computer Science at Karlstad University, Karlstad, Sweden, that he joined in 2005. From 2003 to 2004, he was Assistant Professor at the School of Computer Engineering, Nanyang Technological University, Singapore. His research interests are in the area of Wireless Meshed Networks, Ad-Hoc Networks, Multimedia Networking, Quality of Service, and P2P systems. He has published over 100 conference and journal papers, and several book chapters. He received the Docent degree in Computer Science from Karlstad University in 2006, the Ph.D. degree in Computer Science from Universität Ulm, Germany, in 2002 and an M.S. degree from Universität Augsburg, Germany. Andreas is a Member of the IEEE.
January 14 Halmstad Colloquium talk
Professor Giorgio Buttazzo, RETIS lab Scuola Superiore Sant'Anna, Pisa, Italy, on
Real-time Support for Multicore Platforms