Patent ID: 8031641

Claim:
A method for providing a multimedia service between hetero UPnP networks, the method comprising: establishing a first communication channel with a specific extensible home connector selected from a plurality of extensible home connectors through a relay peer; searching multimedia data to play from multimedia data in a specific UPnP network, which the specific extensible home connector is located on through the first communication channel; establishing a second communication channel through a UPnP internet gateway in the specific UPnP network in case of demanding play of a specific multimedia data; and receiving the specific multimedia data from a UPnP media server in the specific UPnP network through the second communication channel, wherein the establishing of the first communication channel comprises: generating a virtual transmission channel by using channel information which the specific extensible home connector advertises; generating a one-way communication channel by binding the virtual transmission channel with a virtual transmission channel of the specific extensible home connector; transmitting to the specific extensible home connector through the one-way communication channel a authentication inquiry message which includes virtual reception channel information of the one-way communication channel; and authenticating the specific extensible home connector by using a authentication response message transmitted from the specific extensible home connector when authentication is normally finished through the authentication inquiry message.