Correlating Communication Sessions

• US 20110032906A1
• Filed: 04/07/2009
• Published: 02/10/2011
• Est. Priority Date: 04/08/2008
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Technologies Oy (Nokia Corporation)
• Inventors: Poikselka, Miikka Juhana, Mutikainen, Jari
• Granted Patent: US 9,967,132 B2
• Time in Patent Office: Days
• US Class Current: 370/331
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 2101/395 Internet protocol multimedia private identity [IMPI]; Internet protocol multimedia public identity [IMPU]
• CPC Class Codes: H04L 61/2596 Translation of addresses of the same type other than IP, e.g. translation from MAC to MAC addresses
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/1046 Call controllers; Call servers
• CPC Class Codes: H04L 65/1073 Registration or de-registration
• CPC Class Codes: H04L 65/1094 Inter-user-equipment sessions transfer or sharing
• CPC Class Codes: H04L 65/1095 Inter-network session transfer or sharing
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 8/20 Transfer of user or subscriber data

Abstract

The present invention relates to a session handling entity in a communication system, the session handling entity (S-CSCF) maintain a relationship between at least one public user identity, at least one private user identity and at least one contact address of a user of a communication system. Then receives from a subscription entity an indication of a correlation identity associated with the user, and stores the indication of the correlation identity as part of the relationship maintained by the maintaining means. When a session request of the user is received, determining the correlation identity for the user based on a contact address of the user included in the session request and the indication of a correlation identity associated with the user take place, and the correlation identity is included in the session request.

Claims

1-26. -26. (canceled)

27. A subscription entity in a communication comprising

maintaining means for maintaining subscription data of a user, the subscription data comprising at least one Circuit Switched identity of the user and at least one IP Multimedia Subsystem (IMS) identity of the user,

assigning means for assigning one of identities in the subscription data as a correlation identity for the user for correlating a Circuit Switched call of the user to a session initiation protocol (SIP) session of the user, and

sending means for sending an indication of the correlation identity to a session handling entity.

28. The subscription entity of claim 27, wherein the sending means is configured to send the indication of the correlation identity as part of a user profile download.

29. The subscription entity of claim 27, wherein the correlation identity comprises a mobile subscriber international ISDN number (MSISDN) of the user and wherein the correlation identity is bound to the private IMS identity of the user.

30. A method of correlating sessions in a communication system, comprising

maintaining subscription data of a user, the subscription data comprising at least one Circuit Switched identity of the user and at least one IP Multimedia Subsystem (IMS) identity of the user,

assigning one of identities in the subscription data as a correlation identity for the user for correlating a Circuit Switched call of the user to a session initiation protocol (SIP) session of the user, and,

correlating the Circuit Switched call of the user to the session initiation protocol (SIP) session of the user based on the correlation identity.

31. A method of claim 30, wherein the maintaining and the assigning are performed at a home subscriber server and the correlating is performed at an application server.

32. A method of claim 30, wherein the correlation identity comprises a mobile subscriber international ISDN number (MSISDN) of the user and wherein the correlation identity is bound to the private IMS identity of the user.

33. A session handling entity in a communication system, comprising:

maintaining means for maintaining a relationship between at least one public user identity, at least one private user identity and at least one contact address of a user of a communication system, wherein the maintained relationship comprises at least one Circuit Switched identity of the user and at least one IP Multimedia Subsystem (IMS) identity of the user,

receiving means for receiving from a subscription entity an indication of a correlation identity associated with the user,

storing means for storing the indication of the correlation identity as part of the relationship maintained by the maintaining means,

session means for receiving a session request of the user

determining means for determining the correlation identity for the user based on a contact address of the user included in the session request and the indication of a correlation identity associated with the user, and

including means for including the correlation identity in the session request to correlate a Circuit Switched call to a session initiation protocol (SIP) session.

34. The session handling entity of claim 33 further comprising transmitting means for transmitting the session request to an application server.

35. The session handling entity of claim 33 wherein the determining means in configured to determine the correlation identity by mapping a combination of the contact address and the public identity received in the session request to the private identity of the user in the maintaining means.

36. The session handling entity of any of claim 33 wherein the session request comprises one of a request to transfer the session to another access network technology, a handover request and an emergency session request.

37. The session handling entity of any of claim 33 wherein the maintaining means in configured to maintain the relationship between the at least one public user identity, the at least one private user identity and the at least one contact address within a subscription of the user.

38. A method of correlating sessions in a communication system, comprising:

maintaining a relationship between at least one public user identity, at least one private user identity and at least one contact address of a user of a communication system, wherein the maintained relationship comprises at least one Circuit Switched identity of the user and at least one IP Multimedia Subsystem (IMS) identity of the user,

receiving from a subscription entity an indication of a correlation identity associated with the user,

storing the indication of the correlation identity as part of the maintained relationship,

receiving a session request of the user

determining the correlation identity for the user based on a contact address of the user included in the session request and the indication of a correlation identity associated with the user, and

including the correlation identity in the session request to correlate a Circuit Switched call to a session initiation protocol (SIP) session.

39. The method of claims 38, further comprising identifying a session leg to be transferred to another access technology based on the correlation identity received in the session request.

40. A method of claim 39, wherein the identifying the session leg to be transferred is done at an application server to which the session request is transmitted.

41. A computer program product comprising code means adapted to produce the steps of claim 38 when loaded into the memory of a computer.