Method and system for providing presence service

• US 20100125744A1
• Filed: 11/19/2009
• Published: 05/20/2010
• Est. Priority Date: 11/20/2008
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hong, Sung Min
• Application Number:
  US12/592,105
• Publication Number:
  US 20100125744A1
• Time in Patent Office: Days
• US Class Current: 713/323
• CPC Class Codes: H04L 67/54 Presence management, e.g. monitoring or registration for receipt of user log-on information, or the connection status of the users
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system is configured to provide a presence service with reduction of resource and energy waste. The presence service method includes receiving, at a presence server, a message requesting suspension of delivery of presence information of presentities subscribed by a watcher, the suspension request message being transmitted by the watcher of which a sleep mode condition is satisfied; receiving a changed part of the presence information from one of the presentities; retaining the changed part of the presence information; receiving a message requesting restart of the delivery of presence information from the watcher; and sending the changed part of the presence information to the watcher in response to the restart request message.

Claims

1. A method for providing a presence service, comprising:

receiving, at a presence server, a message requesting suspension of delivery of presence information of presentities subscribed by a watcher, the suspension request message being transmitted by the watcher of which a sleep mode condition is satisfied;

receiving a changed part of the presence information from one of the presentities;

retaining the changed part of the presence information;

receiving a message requesting restart of the delivery of presence information from the watcher; and

sending the changed part of the presence information to the watcher in response to the restart request message.

2. The method of claim 1, wherein the sleep mode condition is a time duration for which no event triggering an operation of the watcher is detected.

3. The method of claim 1, wherein the sleep mode condition is a time duration for which a display of the watcher is not switched on.

4. The method of claim 1, wherein the suspension request message is a SUBSCRIBE request message having an operation mode field set to ‘

sleep’

.

5. The method of claim 4, wherein the SUBSCRIBE request message is a Session Initiation Protocol (SIP) message.

6. The method of claim 1, wherein the restart request message is a SUBSCRIBE request message having an operation mode field set to ‘

active’

.

7. The method of claim 5, wherein the SUBSCRIBE request message is a Session Initiation Protocol (SIP) message.

8. The method of claim 1, further comprising:

receiving a message requesting the presence information of the presentities subscribed by the watcher before the receipt of the suspension request message;

receiving a changed part of the presence information from at least one of the presentities; and

delivering the changed part of the presence information to the watcher.

9. The method of claim 8, further comprising subscribing, by the watcher, the presentities to a Multimedia Subsystem (IMS) server.

10. A system for providing a presence service, comprising:

a server configured to receive and store the presence information provided by at least one presentity, the server configured to at least one of;

deliver the presence information to at least one watcher; and

retain the presence information according to the requests of the watcher.

11. The system of claim 10, wherein the server receives from the watcher, when the sleep mode condition is satisfied, a SUBSCRIBE request message having an operation mode field set to ‘

sleep’

.

12. The system of claim 10, wherein the server receives from the watcher, when the sleep mode condition is dissatisfied, a SUBSCRIBE request message having an operation mode field set to ‘

active’

.

13. The system of claim 12, wherein the SUBSCRIBE request message is a Session Initiation Protocol (SIP) message.

14. For use in a system for providing a presence service, a portable terminal comprising:

a watcher configured to request initiation of the presence service when a sleep mode condition is satisfied and suspension of the presence service when the sleep mode condition is dissatisfied; and

communicate with a server that receives and stores a presence information provided by at least one presentity, where the watcher is configured to at least one of;

receive the presence information from the server; and

send a request to the server to retain the presence information.

15. The terminal of claim 14, wherein the watcher determines, when no event triggering an operation of the watcher for a predetermined time duration, that the sleep mode condition is satisfied.

16. The terminal of claim 14, wherein the watcher determines, when a display of the watcher is not switched on for a predetermined time duration, that the sleep mode condition is satisfied

17. The terminal of claim 16, wherein the SUBSCRIBE request message is a Session Initiation Protocol (SIP) message.

18. The terminal of claim 14, wherein the server receives from the watcher, when the sleep mode condition is dissatisfied, a SUBSCRIBE request message having an operation mode field set to ‘

active’

.

19. The terminal of claim 18, wherein the SUBSCRIBE request message is a Session Initiation Protocol (SIP) message.

20. The terminal of claim 14, wherein the at least one presentity is subscribed to a Multimedia Subsystem (IMS) server by the watcher.