Application Design for Cooperative QoS Management

QoS management for distributed multimedia applications becomes more complex when a huge number of users are participating, as for instance in broadcasts of major sports events or in teleteaching applications. On the other hand, such an application offers a variety of options to improve resource usage and system performance while decreasing the overall communication cost. We developed a new QoS management scheme called Cooperative QoS management which handles both increased complexity and options. In this paper, we show how this new scheme influences the design of applications based on it, especially concerning the QoS user interface. As an example, we present a teleteaching application developed in the framework of our project "Broadband Services". Keywords: QoS management, MM application design, multicast 1 Introduction The design of distributed multimedia applications, such as systems for access to remote multimedia databases or teleconferencing, requires carful consideration of qu...