Implementation of a flexible control system for launching stream services independently of the access network

This paper shows the architecture and discusses the implementation of an access network independent service control system that can be used to order stream-based services for terminals with different capabilities. A control system is implemented to handle the parameter negotiation and service initiation between the client and the server system. The stream-based service is adapted to different access networks via the control system's parameter negotiation procedure. The stream application may also dynamically change service parameters like bandwidth. In addition, the control system allows us to separate the service control entity from the entities involved in the service contents (e.g. user can order a media stream with his GSM phone to his "future" TV).