Transparent UPnP interactions over global network

Universal Plug and Play (UPnP) 1 has been proposed by Microsoft for realization of interactions among home appliances (e.g., TVs, air conditioners, and lighting devices) and information devices (e.g., PCs and PDAs) on a home local network. UPnP assumes to be used on a local network. Difficulties exist when establishing a communication link between two local networks across the Internet. In this paper, we propose a new device interaction method across the Internet with web service technology. We implement prototype system and make evaluation about latency.