Patent ID: 8108568

Claim:
A universal plug and play (UPnP)-based network system comprising: a first control point (CP) to store a first CP description and to transmit a first command message together with a first CP description position information to an external UPnP device, so that the external UPnP device performs an operation according to the first command message and recognizes the first control point sending the first command message, wherein the first control point generates the first command message including the first CP description position information to indicate a storage position of the first CP description, and wherein the UPnP device operates according to the first command message from the first control point and distinguishes the first control point from a second control point that transmits a second command message with a second CP description position information to the external UPnP device by receiving the first CP description stored in the first CP from the first CP according to the first CP description position information and a second CP description stored in the second CP according to the second CP description position information.