Growing demands of wireless local area communication are prominent for many day-to-day
activities. Applications such as multimedia or VoIP which rely on tight quality-of-service
(QoS) support are widely used. In order to handle these applications properly the data
transmission over radio channels should be enhanced by means of spectrum management. Andreas
Könsgen describes two major areas of spectrum management namely the coordination of
neighbouring networks with overlapping ranges by controlling different transmission parameters
and the channel allocation by the base station inside a radio cell using a cross-layer
approach. Theoretical analyses and simulations demonstrate the usage of these methods and show
the QoS enhancements which can be achieved. Finally the author discusses the practical meaning
of spectrum management and presents an outlook for future enhancements.