Pulling information from information sources via refer requests

• US 20080228929A1
• Filed: 03/15/2007
• Published: 09/18/2008
• Est. Priority Date: 03/15/2007
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Kiss, Krisztian
• Granted Patent: US 9,203,918 B2
• Time in Patent Office: Days
• US Class Current: 709/228
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 67/148 Migration or transfer of sessions
• 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: H04L 67/55 Push-based network services

Abstract

Methods, computer program products, information servers, information sources and a system are shown in the context of pulling information from information sources. At an information server, a refer request, which comprises an identifier of a refer-to entity to be referred to by a recipient of the refer request, is configured to trigger an information source to provide information upon reception of the refer request without referring to further information sources. The refer request is issued. At an information source, the refer request is received, and the refer request is checked to determine if information shall be provided by the information source in response to the refer request without referring to further information sources. The information is only provided if it is determined that the information shall be provided.

Claims

1. A method, comprising:

configuring, at an information server, a refer request, which refer request comprises an identifier of a refer-to entity to be referred to by a recipient of said refer request, to trigger an information source to provide information upon reception of said refer request without referring to further information sources, and

issuing said refer request.

2. The method according to claim 1, wherein said refer request is a REFER request according to the Session Initiation Protocol.

3. The method according to claim 1, wherein said information is presence information, wherein said information source is a presence source, and wherein said presence information provided by said presence source pertains to a presentity.

4. The method according to claim 2, wherein said information is presence information, wherein said information source is a presence source, and wherein said presence information provided by said presence source pertains to a presentity.

5. The method according to claim 1, wherein said configuring comprises:

setting said identifier of said refer-to entity to an identifier of an entity to which said information pertains.

6. The method according to claim 1, wherein said configuring comprises:

setting an identifier of said recipient of said refer request to an identifier of one of said information source and an entity to which said information pertains.

7. The method according to claim 1, wherein said configuring comprises:

setting an identifier of an originator of said refer request to an identifier of an entity to which said information pertains.

8. The method according to claim 1, wherein said configuring comprises:

setting a parameter of said refer request to a value that ensures that said recipient of said refer request does not create a subscription with an issuer of said refer request.

9. The method according to claim 1, wherein said refer request is issued towards an identifier of an entity to which said information pertains.

10. The method according to claim 9, wherein a routing of said refer request is encoded in an Internet Protocol Multimedia Subsystem initial Filter Criteria.

11. A computer-readable medium having a computer program stored thereon, the computer program comprising instructions operable to cause a processor to perform the method of claim 1.

32. A method, comprising the steps of claims 1 and further comprising:

receiving, at an information source, a refer request, wherein said refer request comprises an identifier of a refer-to entity to be referred to by a recipient of said refer request,

checking said refer request to determine if information shall be provided by said information source in response to said refer request without referring to further information sources, and

providing said information, if it is determined that said information shall be provided.

12. An information server, comprising:

a processing unit adapted to configure a refer request, which refer request comprises an identifier of a refer-to entity to be referred to by a recipient of said refer request, to trigger an information source to provide information upon reception of said refer request without referring to further information sources, and

an interface configured to issue said refer request.

13. The information server according to claim 12, wherein said refer request is a REFER request according to the Session Initiation Protocol.

14. The information server according to claim 12, wherein said information server is a presence server, wherein said information source is a presence source, wherein said information is presence information, and wherein said presence information provided by said presence source pertains to a presentity.

15. The information server according to claim 13, wherein said information server is a presence server, wherein said information source is a presence source, wherein said information is presence information, and wherein said presence information provided by said presence source pertains to a presentity.

33. A system, comprising an information server according to claim 12 and an information source, comprising:

an interface configured to receive a refer request, wherein said refer request comprises an identifier of a refer-to entity to be referred to by a recipient of said refer request; and

a processing unit configured to check said refer request to determine if information shall be provided by said information source in response to said refer request without referring to further information sources, and configured to provide said information, if it is determined that said information shall be provided.

16. An information server, comprising:

means for configuring, at an information server, a refer request, which refer request comprises an identifier of a refer-to entity to be referred to by a recipient of said refer request, to trigger an information source to provide information upon reception of said refer request without referring to further information sources, and

means for issuing said refer request.

17. The information server according to claim 16, wherein said refer request is a REFER request according to the Session Initiation Protocol.

18. A method, comprising:

receiving, at an information source, a refer request, wherein said refer request comprises an identifier of a refer-to entity to be referred to by a recipient of said refer request,

checking said refer request to determine if information shall be provided by said information source in response to said refer request without referring to further information sources, and

providing said information, if it is determined that said information shall be provided.

19. The method according to claim 18, wherein said refer request is a REFER request according to the Session Initiation Protocol.

20. The method according to claim 18, wherein said information is presence information, wherein said information source is a presence source, and wherein said presence information provided by said presence source pertains to a presentity.

21. The method according to claim 19, wherein said information is presence information, wherein said information source is a presence source, and wherein said presence information provided by said presence source pertains to a presentity.

22. The method according to claim 18, wherein said checking comprises:

checking if said identifier of said refer-to entity and an identifier of an originator of said refer request both equal an identifier of an entity to which said information pertains, wherein said information is only provided if said checking is positive.

23. The method according to claim 18, wherein said checking comprises:

checking if a parameter of said refer request is set to a value that indicates that said information source shall provide said information, wherein said information is only provided if said checking is positive.

24. The method according to claim 18, further comprising:

checking if a parameter in said refer request is set to indicate that said recipient shall not create a subscription with an issuer of said refer request, and

setting, in case that said checking is positive, a parameter in response to said refer request.

25. A computer-readable medium having a computer program stored thereon, the computer program comprising instructions operable to cause a processor to perform the method of claim 18.

26. An information source, comprising:

an interface configured to receive a refer request, wherein said refer request comprises an identifier of a refer-to entity to be referred to by a recipient of said refer request,

a processing unit configured to check said refer request to determine if information shall be provided by said information source in response to said refer request without referring to further information sources, and configured to provide said information, if it is determined that said information shall be provided.

27. The information source according to claim 26, wherein said refer request is a REFER request according to the Session Initiation Protocol.

28. The information source according to claim 26, wherein said information is presence information, wherein said information source is a presence source, and wherein said presence information provided by said presence source pertains to a presentity.

29. The information source according to claim 27, wherein said information is presence information, wherein said information source is a presence source, and wherein said presence information provided by said presence source pertains to a presentity.

30. An information source, comprising:

means for receiving a refer request, wherein said refer request comprises an identifier of a refer-to entity to be referred to by a recipient of said refer request,

means for checking said refer request to determine if information shall be provided by said information source in response to said refer request without referring to further information sources, and

means for providing said information, if it is determined that said information shall be provided.

31. The information source according to claim 30, wherein said refer request is a REFER request according to the Session Initiation Protocol.