Cooperative Traffic Information Systems

The thesis deals with cooperative traffic information systems, which support the driver of a car in selecting a route, based on traffic information collected by other cars. System participants contribute measurements of the traffic situation in their vicinity (e.g., current traffic flow speed) and use the measurements made by other drivers to find the fastest route to their destination with regard to the current conditions. Such systems help avoid traffic jams, highly congested roads, and other deterioration. The communication pattern of the discussed application is quite challenging: continuously updated data (i.e., description of the current traffic conditions) are to be made available to multiple participants spread over relatively large geographical areas. Cooperative traffic information systems have primarily been discussed in the context of direct, ad-hoc communication between cars. We formally show in this thesis that a very special communication properties of the discussed application do not fit into the constrained capacity offered by mobile ad-hoc networks. Consequently, this work proposes an alternative design, based on a peer-to-peer paradigm and cellular networks.

Autorentext

From late 2000 to 2005 I studied applied physics, physics and computer science at Poznan University of Technology and Adam Mickiewicz University of Poznan in Poland. Thereafter I joined the computer networks research group at the Heinrich-Heine University of Duesseldorf and started working towards my Ph.D. I received my doctoral degree in 2011.