System, apparatus, and method for establishing circuit-switched communicaitons via packet-switched network signaling

• US 20080159276A1
• Filed: 02/21/2008
• Published: 07/03/2008
• Est. Priority Date: 10/17/2003
• Status: Active Grant

• Current Assignee: Jari Mutikainen, Jarmo Kuusinen, Matti Turunen
• Original Assignee: Jari Mutikainen, Jarmo Kuusinen, Matti Turunen
• Inventors: Kuusinen, Jarmo, Turunen, Matti, Mutikainen, Jari
• Granted Patent: US 8,102,839 B2
• Time in Patent Office: Days
• US Class Current: 370/356
• CPC Class Codes: B01J 19/0093 Microreactors, e.g. miniaturised or microfabricated reactors laboratory containers with capillary fluid transport in microfabricated channels or chambers B01L3/5027
• CPC Class Codes: B01J 2219/00783 Laminate assemblies, i.e. the reactor comprising a stack of plates
• CPC Class Codes: B01J 2219/00788 Three-dimensional assemblies, i.e. the reactor comprising a form other than a stack of plates
• CPC Class Codes: B01J 2219/00822 Metal
• CPC Class Codes: B01J 2219/00835 Comprising catalytically active material
• CPC Class Codes: G01N 2035/00326 Analysers with modular structure
• CPC Class Codes: Y10T 29/49345 Catalytic device making

Abstract

A system, apparatus and method for establishing circuit-switched (CS) communications in packet-switched (PS) multimedia networks such as IMS, and providing services via the PS networks to CS domain users. A dialog is established between terminals through the PS multimedia network. A service is provided to at least one of the terminals by way of the dialog. CS bearer information, including an indication that a communication flow is requested via a CS network, is communicated between the terminals by way of the dialog. A communication flow via the CS network is effected between the terminals as directed by the CS bearer information. IMS or other PS multimedia network services can thus be provided to users otherwise communicating via the CS-domain.

Claims

1. A method comprising:

establishing, via a first terminal, a Session Initiation Protocol (SIP) session with a second terminal via an Internet Protocol Multimedia Subsystem (IMS) of a packet-switched (PS) network;

determining that a circuit switched (CS) bearer is required for a media component of the SIP session;

obtaining one or more CS routing numbers used for establishing a CS communication flow with the second terminal via the CS bearer;

communicating the CS routing number via the SIP session by way of a Session Description Protocol (SDP) extension, wherein the SDP extension further includes an indication that the CS communication flow is requested via the CS bearer; and

effecting the CS communication flow with the second terminal via the CS bearer as directed by SDP extension, wherein the CS communication flow is bound together with the SIP session of the first and second terminals.

2. The method of claim 1, wherein the SIP session includes an IMS-specific service established between the first and second terminals.

3. The method of claim 2, wherein effecting the CS communication flow is initiated before the establishment of the IMS-specific service.

4. The method of claim 2, wherein the IMS-specific service comprises Multimedia Caller Line Identification.

5. The method of claim 2, wherein the IMS-specific service comprises an application sharing service.

6. The method of claim 1, wherein the SDP extension comprises an SDP connection data field that includes an indication of CS bearer network connection type and CS bearer address format type.

7. The method of claim 6, wherein the connection data field includes the CS routing number.

8. The method of claim 7, wherein the CS routing number comprises an E164 address.

9. The method of claim 1, wherein the SDP extension comprises an SDP attribute field that indicates that that the CS communication flow is requested via the CS bearer.

15. The terminal of claim 1, wherein the SDP extension comprises an SDP connection data field that includes an indication of CS bearer network connection type and CS bearer address format type.

16. The terminal of claim 15, wherein the connection data field includes the CS routing number.

17. The terminal of claim 16, wherein the CS routing number comprises an E164 address.

10. A terminal comprising:

a processing system;

a first user agent operable via the processing system and configured to;

establish a Session Initiation Protocol (SIP) session with a target terminal via an Internet Protocol Multimedia Subsystem (IMS) of a packet-switched (PS) network;

obtain one or more CS routing numbers used for establishing a CS communication flow with the target terminal via the CS bearer;

communicate the CS routing number between the terminals via the SIP session by way of a Session Description Protocol (SDP) extension, wherein the SDP extension further includes an indication that the CS communication flow is requested via the CS bearer; and

a second user agent operable via the processing system and configured to effect the CS communication flow with the target terminal via the CS bearer as directed by SDP extension, wherein the CS communication flow is bound together with the SIP session of the terminal and the target terminal.

11. The terminal of claim 10, wherein the SIP session includes an IMS-specific service established between the first and second terminals.

12. The terminal of claim 11, wherein effecting the CS communication flow is initiated before the establishment of the IMS-specific service.

13. The terminal of claim 11, wherein the IMS-specific service comprises Multimedia Caller Line Identification.

14. The terminal of claim 11, wherein the IMS-specific service comprises an application sharing service.

18. The terminal of claim 10, wherein the SDP extension comprises an SDP attribute field that indicates that that the CS communication flow is requested via the CS bearer.

19. A computer-readable storage medium having instructions stored thereon which are executable by a first terminal by performing steps comprising:

establishing a Session Initiation Protocol (SIP) session with a second terminal via an Internet Protocol Multimedia Subsystem (IMS) of a packet-switched (PS) network;

determining that a circuit switched (CS) bearer is required for a media component of the SIP session;

obtaining one or more CS routing numbers used for establishing a CS communication flow with the second terminal via the CS bearer;

communicating the CS routing number via the SIP session by way of a Session Description Protocol (SDP) extension, wherein the SDP extension further includes an indication that the CS communication flow is requested via the CS bearer; and

effecting the CS communication flow with the second terminals via the CS bearer as directed by SDP extension, wherein the CS communication flow is bound together with the SIP session of the first and second terminals.

20. A system comprising:

means for establishing a Session Initiation Protocol (SIP) session between a first and second terminal via an Internet Protocol Multimedia Subsystem (IMS) of a packet-switched (PS) network;

means for determining that a circuit switched (CS) bearer is required for a media component of the SIP session;

means for obtaining one or more CS routing numbers used for establishing a CS communication flow between the first and second terminals via the CS bearer;

means for communicating the CS routing number between the terminals via the SIP session by way of a Session Description Protocol (SDP) extension, wherein the SDP extension further includes an indication that the CS communication flow is requested via the CS bearer; and

means for effecting the CS communication flow between the first and second terminals via the CS bearer as directed by SDP extension, wherein the CS communication flow is bound together with the SIP session in the first and second terminals.