METHOD FOR HANDLING CS CALLS IN VOICE CALL CONTINUITY, VCC APPLICATION SERVER AND TRANSLATION ENTITY

• US 20090310597A1
• Filed: 04/10/2007
• Published: 12/17/2009
• Est. Priority Date: 05/02/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Hédé, Patrice, Yoon, Kyung-Ae, Kim, Hyun-Sook, Ra, Mi-Seon, Song, Jae-Seung
• Granted Patent: US 9,131,042 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/1428 Invoice generation, e.g. customization, lay-out, database processing, algorithms for calculating the bill or formatting invoices as WWW pages invoicing in general G06Q30/04
• CPC Class Codes: H04M 7/128 Details of addressing, directories or routing tables
• CPC Class Codes: H04Q 3/0045 involving hybrid, i.e. a mixture of public and private, or multi-vendor systems
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support

Abstract

A method for handling CS (Circuit Switching) calls in a VCC (Voice Call Continuity), a VCC application server and an apparatus thereof, wherein first, the VCC application identifies whether a called party number of CS domain calls routed thereto is in an international format, secondly, the VCC application may request to convert the format of the called party number into the international format (referred to as ‘routable number’) if the called party number is not in the international format, thirdly, a translation entity may convert the called party number into the routable number by adding an international prefix suitable for a current location of the originating terminal based on both the called party number and location information on the originating terminal, and then the calls may continue in an IMS domain or a CS domain by the routable number.

Claims

1. A method for handling calls in a Voice Call Continuity (VCC) comprising:

(a) receiving, by a VCC application, a call of a CS domain originated by a terminal and analyzing whether a called party number of the call is in an international format;

(b) requesting, by the VCC application, a translation entity to convert the format of the called party number into the international format if the called party number is not in the international format; and

(c) receiving, by the VCC application, a response with respect to the conversion request from the translation entity to continue the call to the called party.

2. The method of claim 1, wherein the VCC application at the step (a) analyzes whether the called party number is in the international format based upon the called party number and location information on the terminal included in the call.

3. The method of claim 2, wherein the location information on the terminal includes at least one or more of an ID of a network and an ID of a Visited Mobile Switching Center (VMSC) of the network, the network corresponding to the CS domain.

4. The method of claim 1, wherein the VCC application at the step (c) continues the call through the VMSC of the CS domain.

5. The method of claim 1, wherein the VCC application at the step (c) receives a routable number or a reject message from the translation entity with respect to the conversion request for the called party number.

6. The method of claim 5, wherein the routable number is obtained by converting the format of the called party number into the international format.

7. The method of claim 5, wherein if the VCC application receives the routable number from the translation entity, the VCC application makes the VMSC of the CS domain anchor the call in an IMS domain, and accordingly the VMSC continues the call to the called party by the routable number.

8. The method of claim 5, wherein if the VCC application receives the reject message from the translation entity, the VCC application does not make the VMSC of the CS domain anchor the call in the IMS domain, and accordingly the VMSC continues the call by the called party number.

9. The method of claim 1, wherein, if the VCC application requests the translation entity to convert the format of the called party number into the international number, further comprising:

inquiring, by the translation entity, an international code for the called party number based upon operation policy and translation policy;

converting the called party number into the routable number using the international code if the international code corresponding to the called party number is inquired; and

sending the routable number from the translation entity to the VCC application.

10. The method of claim 1, wherein, if the VCC application requests the translation entity to convert the format of the called party number into the international format, further comprising:

inquiring, by the translation entity, an international code for the called party number based upon operation policy and translation policy; and

sending the reject message from the translation entity to the VCC application if any usage policy or translation rules for the called party number are not inquired.

11. The method of claim 1, further comprising:

sending the called party number and the location information on the terminal from the VCC application to the translation entity in order to convert the format of the called party number into the international format.

12. The method of claim 11, wherein the translation entity accesses the operation policy and the translation policy in order to inquire whether any international code exists for the called party number using the called party number and the location information on the terminal.

13. A method for handing calls in a Voice Call Continuity (VCC) comprising:

analyzing, by a VCC application server, whether a called party number originated from a CS domain is in an international format;

requesting, by the VCC application server, a translation entity to convert the called party number into a routable number in the international format; and

receiving, by the VCC application server, the routable number or a reject message from the translation entity, and continuing the call to the called party.

14. A Voice Call Continuity (VCC) application server performing:

analyzing a called party number originated from an originating terminal and location information on the originating terminal;

requesting a translation entity to convert a format of the called party number into an international format if the analyzed called party number is not in the international format; and

receiving a response with respect to the conversion request from the translation entity and continuing the originated call according to the response.

15. The VCC application server of claim 14, wherein the VCC application server sends to the translation entity the called party number and the location information on the originating terminal.

16. A Voice Call Continuity (VCC) application server performing:

receiving a call originated from a terminal in a CS domain;

analyzing whether the called party number is in a non-international format based upon particular information included in the call;

requesting the translation entity to convert the format of the called party number into the international format if the called party number is in the non-international format; and

receiving the converted called party number from the translation entity and continuing the call in a Visited Mobile Switching Center (VMSC) of the CS domain.

17. The VCC application server of claim 16, wherein the particular information includes the called party number and location information on the terminal.

18. The VCC application server of claim 17, wherein the location information on the terminal includes at least one or more of an ID of a network and an ID of a Visited Mobile Switching Center (VMSC) of the network, the network corresponding to the CS domain.

19. A translation entity in a Voice Call Continuity (VCC) performing:

receiving a message for requesting a conversion of a format of a called party number into an international format from a VCC application; and

sending a routable number or a reject message in response to the request message to the VCC application.

20. The translation entity of claim 19, wherein the routable number is obtained by converting the format of the called party number into the international format.

21. The translation entity of claim 19, wherein the translation entity is configured inside the VCC application or independently configured outside the VCC application.

22. The translation entity of claim 19, wherein the translation entity receives the called party number and location information on a terminal from the VCC application.

23. The translation entity of claim 22, wherein the translation entity performs:

storing operator policy and translation policy; and

accessing the operation policy and the translation policy in order to inquire whether any international code exists for the called party number.

24. The translation entity of claim 23, wherein the translation entity converts the called party number into a routable number in an international format using the international code.