Digital broadcast networks supporting split-path communication for mobile devices

Wireless mobile devices (mobile phones or PDAs) gain more and more simultaneous access to different physical access networks like GSM, UMTS or Wireless LAN. This paper analyzes and describes how digital broadcast networks like DAB and DVB can be used for mobile devices. A communication model is provided which allows optimized dynamic selection of up- and downstreams according to particular communication needs. Further a testbed, containing a DAB transmitter a DAB receiver and software components, is introduced.