SESSION TRANSFER METHOD AND METHOD FOR SUPPORTING SESSION CONTINUITY

• US 20100011112A1
• Filed: 08/11/2009
• Published: 01/14/2010
• Est. Priority Date: 07/25/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: SONG, Jae-Seung, KIM, Hyun-Sook
• Granted Patent: US 9,119,117 B2
• Time in Patent Office: Days
• US Class Current: 709/228
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/1095 Inter-network session transfer or sharing
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/0016 Hand-off preparation specially adapted for end-to-end data sessions
• CPC Class Codes: H04W 36/0027 for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 80/10 adapted for application session management, e.g. SIP [Session Initiation Protocol] connection management H04W76/00; arrangements for session management H04L67/14

Abstract

A device and method for transferring a session. The method includes receiving a session continuity operator policy while performing a session with a target terminal via an original network; storing the session continuity operator policy; determining whether to transfer a whole or part of the session to a server according to a parameter in at least the session continuity operator policy; and sending to the server a session invitation message for a session transfer to transfer of the whole of the session if the whole of the session is determined to be transferred. The session invitation message includes information on at least one data to be transferred among a voice data and a non-voice data on the session. The session transfer corresponds to a PS (Packet Switching) to PS transfer.

Claims

1-18. -18. (canceled)

19. A method for transferring a session, the method comprising:

receiving a session continuity operator policy while performing a session with a target terminal via an original network;

storing the session continuity operator policy;

determining whether to transfer a whole or part of the session to a server according to a parameter in at least the session continuity operator policy; and

sending to the server a session invitation message for a session transfer to transfer of the whole of the session if the whole of the session is determined to be transferred,

wherein the session invitation message includes information on at least one data to be transferred among a voice data and a non-voice data on the session, and

wherein the session transfer corresponds to a PS (Packet Switching) to PS transfer.

20. The method of claim 19, further comprising:

sending to the server a session invitation message to transfer the part of the session if the part of the session is determined to be transferred.

21. The method of claim 19, wherein the session invitation message includes an R-URI (request-uniform resource identifier).

22. The method of claim 19, wherein the session invitation message includes a Replace header.

23. The method of claim 19, wherein the session continuity operator policy includes a parameter indicating whether the session transfer is required, recommended, or selectable.

24. The method of claim 19, wherein the session continuity operator policy includes a parameter indicating a type of session transfer.

25. The method of claim 19, wherein the session continuity operator policy includes a parameter indicating a preferred domain or preferred network for the session transfer.

26. The method of claim 19, wherein the session continuity operator policy includes a parameter indicating an unallowable domain or network.

27. A method for supporting session continuity for a terminal in a server, the method comprising:

sending a session continuity operator policy to a first terminal, when the first terminal is performing a session through an original network with a second terminal, the session continuity operator policy including a parameter indicating whether to transfer a whole or part of the session as a session transfer;

receiving from the terminal, via a target network, a session invite to transfer the whole of the session; and

sending a session invite message to the second terminal to transfer the session to the target network, in response to a receipt of the session invite message,

wherein the session invitation message includes information on at least one data to be transferred among a voice data and a non-voice data in the session, and

wherein the session transfer corresponds to PS (Packet Switching) to PS transfer.

28. The method of claim 27, further comprising:

receiving from the terminal via a target network a session invite for the part of the session.

29. The method of claim 27, wherein the session invitation message includes an R-URI.

30. The method of claim 27, wherein the session invitation message includes a Replace header.

31. The method of claim 27, wherein the session continuity operator policy includes a parameter indicating whether the session transfer is required, recommended, or selectable.

32. The method of claim 27, wherein the session continuity operator policy includes a parameter indicating a type of session transfer.

33. The method of claim 27, wherein the session continuity operator policy includes a parameter indicating a preferred domain or network preferred for the session transfer.

34. The method of claim 27, wherein the session continuity operator policy includes a parameter indicating an unallowable domain or network for the session transfer.

35. The method of claim 27, further comprising:

generating the session continuity operator policy based on collected information.

36. The method of claim 35, wherein the information is received from an external entity or collected by the server.

37. The method of claim 27, further comprising:

receiving the session continuity operator policy from an external entity.