TERMINAL, SERVER, AND METHOD FOR TRANSMITTING AND RECEIVING PRESENCE INFORMATION
First Claim
1. A terminal, comprising:
- a friend list unit to update a friend list of the terminal;
a presence information control unit to manage presence information, the presence information being information of another terminal associated with the friend list; and
a presence information transmitting unit to transmit a request for updated presence information of a partial portion of the friend list from a server,wherein the friend list unit receives the updated presence information corresponding to the request and updates the presence information.
1 Assignment
0 Petitions
Accused Products
Abstract
An IMS includes a terminal and an Internet Protocol Multimedia Subsystem (IMS) server, and may perform a method for transmitting and receiving presence information via the IMS core unit, a registering unit, a presence information transmitting unit, a friend list unit and a presence information control unit. The IMS core unit processes an IMS protocol. The registering unit registers terminal information to the IMS server. The presence information transmitting unit transmits presence information to the IMS server. The friend list unit manages a friend list of the various terminals. The presence information control unit designates at least one friend in the friend list and requests presence information of the designated friend.
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Citations
20 Claims
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1. A terminal, comprising:
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a friend list unit to update a friend list of the terminal; a presence information control unit to manage presence information, the presence information being information of another terminal associated with the friend list; and a presence information transmitting unit to transmit a request for updated presence information of a partial portion of the friend list from a server, wherein the friend list unit receives the updated presence information corresponding to the request and updates the presence information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for updating a friend list based on presence information, comprising:
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managing the friend list based on the presence information; designating friends of the friend list for updated presence information; requesting the updated presence information from a server based on the designation; receiving the updated presence information from the server; and updating the friend list based on the received updated presence information. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An Internet Protocol Multimedia Subsystem (IMS) server, comprising:
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a friend list unit to manage a first terminal and a second terminal, the first terminal and the second terminal each having a friend list; a presence information control unit to manage presence information for the first terminal and the second terminal, and to store updated presence information for the first terminal; and a presence information transmitting unit to transmit the updated presence information for the first terminal, wherein in response to a request from the second terminal, the presence information transmitting unit transmits the updated presence information for the first terminal to the second terminal. - View Dependent Claims (18, 19, 20)
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Specification