Peer-to-peer control device and transmission overlay management method

A method for controlling a peer-to-peer (P2P) overlay for a logical transmission of contents by a P2P control device, the method comprising:

• receiving peer registration requests from a plurality of peers which want to receive contents and acquiring peer information regarding the plurality of peers;
• receiving an overlay generation request including a contents identifier of desired contents from a requesting peer among the plurality of peers;
• generating the P2P overlay by using the peer information regarding the plurality of peers and network information regarding networks to which the plurality of peers are connected;
• and
• transmitting connection information of a counterpart to be configured to be connected to at least one target involved in the P2P overlay with reference to the P2P overlay.

A method for controlling a peer-to-peer (P2P) overlay for a logical transmission of contents by a peer, the method comprising:

• transmitting information regarding the peer to a peer-to-peer (P2P) control device in order to register the information regarding the peer to the P2P control device;
• transmitting an overlay generation request including a contents identifier of desired contents to the P2P control device;
• receiving connection information regarding a P2P overlay from the P2P control device;
• and
• connecting the P2P overlay with reference to the connection information to receive the contents.