UPnP in integrated home- and building networks

Classic building automation systems have shown that networks of seamlessly integrated devices add true user value to commercial as well as residential building environments. They may positively influence factors such as energy efficiency, flexibility, security and comfort. But these benefits are not convincing enough, if the handling of such networks is complex and acquisition and engineering costs are high. Ideally, the integration of a new device happens without any effort spent on commissioning. Once integrated, devices and services must be easy to use for different users. The UPnP (Universal Plug and Play) protocol suite is a good choice to address these topics. It offers plug and play capabilities and comes up with a standardised interface to control devices. Itpsilas powerful, but it cannot fulfil all the requirements needed, especially in commercial buildings. This paper explores lacks and drawbacks of UPnP, discusses possible additions and introduces CARUSO, an architecture implementing the proposed mechanisms.