Apparatus and method for providing authorization based enhanced address book service in mobile communication system

A method for automatically updating sharing information of a first terminal by a second terminal, the method comprising:

• receiving, by the second terminal, a message requesting to authorize the second terminal to automatically receive the sharing information from the first terminal, the message inquiring about whether the second terminal will receive the sharing information without user intervention;
• transmitting a message permitting the first terminal to authorize the second terminal;
• storing identification information of the first terminal in an authorized list of the second terminal;
• receiving updated sharing information from the first terminal;
• identifying, by the second terminal, the identification information of the first terminal stored in the authorized list to transmit the updated sharing information to the second terminal;
• and
• automatically updating the sharing information of the first terminal using the received updated sharing information, without the user intervention,
• wherein the message requesting to authorize and the updated sharing information are transmitted according to a Peer to Peer (P2P) transmission scheme without passing through a separate server.

A first terminal for automatically updating sharing information, the first terminal comprising:

• a control unit configured to transmit a message requesting to authorize a second terminal to automatically receive the sharing information from the first terminal, the message inquiring about whether the second terminal will receive the sharing information without user intervention, to receive a message permitting the first terminal to authorize the second terminal, to store identification information of the second terminal in an authorized list of the first terminal, to detect an update of the sharing information, and to identify the identification information of the second terminal in the authorized list to receive the sharing information, when the update of the sharing information is detected;
• and
• a communication unit configured to automatically transmit the updated sharing information to the second terminal, without the user intervention,
• wherein the message requesting to authorize and the updated sharing information are transmitted according to a Peer to Peer (P2P) transmission scheme without passing through a separate server.

A second terminal for automatically updating sharing information, the second terminal comprising:

• a control unit configured to receive a message requesting to authorize the second terminal to automatically receive the sharing information from a first terminal, the message inquiring about whether the second terminal will receive the sharing information without user intervention, to transmit a message permitting the first terminal to authorize the second terminal, and to store identification information of the first terminal in an authorized list of the second terminal;
• and
• a communication unit configured to receive updated sharing information from the first terminal,
• wherein the control unit is further configured to identify the identification information of the first terminal stored in the authorized list to transmit the updated sharing information to the second terminal, and to automatically update the sharing information of the first terminal using the received updated sharing information, without the user intervention,
• wherein the message requesting to authorize and the updated sharing information are transmitted according to a Peer to Peer (P2P) transmission scheme without passing through a separate server.