Method and apparatus supporting IP multimedia subsystem

Patent metadata

Field	Value
Publication number	US-10136453-B2
Application number	US-201514598479-A
Country	US
Kind code	B2
Filing date	Jan 16, 2015
Priority date	Jan 20, 2014
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A method and apparatus for supporting multiple IMS networks includes an electronic device supporting multiple IMS networks. A modem receives communication services through an access network and multiple IMS networks including first and second IMS networks; and a communication control module includes a processor. The communication control module is configured to attach the electronic device to the access network on the basis of first identification information corresponding to the access network, register the electronic device in the first IMS network via the access network on the basis of second identification information corresponding to the first IMS network, and register the electronic device in the second IMS network via the access network on the basis of third identification information corresponding to the second IMS network.

First claim

What is claimed is:

1. An electronic device supporting multiple Internet Protocol (IP) multimedia subsystem (IMS) networks, comprising:
a modem configured to receive communication services through an access network and multiple IMS networks connected with the access network, the multiple IMS networks including at least a first IMS network and a second IMS network;
a plurality of SIM cards including a first SIM card and a second SIM card; and
a processor configured to:
communicatively connect the electronic device to the first IMS network based on the first SIM card, and to the second IMS network based on the second SIM card,
after communicatively connecting the electronic device to the first IMS network and the second IMS network, establish a dummy call creating a bearer to the first IMS network based on the first SIM card through the access network, and
after establishing the dummy call, establish voice communication through LTE communication by the second IMS network through the bearer of the dummy call established via the access network based on the second SIM card,
wherein the first IMS network and the second IMS network provide voice communication through LTE service.

2. The electronic device of claim 1 , wherein the processor is configured to obtain at least one portion of address information from the access network, and send a registration request containing the at least one portion of address information to the second IMS network via the access network, and
wherein before the dummy call and the voice communication through LTE communication are established, the electronic device is communicatively connected to the access network based on the first SIM card.

3. The electronic device of claim 1 , wherein the processor is configured to obtain address information of the second IMS network from a subscriber identity module functionally connected with the electronic device or connected with an external server, and send a registration request containing the address information to the second IMS network via the access network.

4. The electronic device of claim 1 , wherein the processor is configured to send to a second device a first call request based on the second SIM card via the access network and second IMS network, and to send, in response to initiation of the first call request, a second call request based on the first SIM card to at least one external device via the access network and first IMS network, and wherein the first call request is initiated by the electronic device.

5. The electronic device of claim 4 , wherein the processor is configured to create a bearer corresponding to a specified service between the electronic device and a specified entity of the access network on the basis of a second call connection.

6. The electronic device of claim 4 , wherein the processor is configured to send the second call request containing information on a codec supported by the electronic device.

7. The electronic device of claim 1 , wherein the processor is configured to send to a second device a call request based on the second SIM card via the access network and second IMS network, and wherein the call request is initiated by the electronic device and includes the first SIM card.

8. The electronic device of claim 1 , wherein the processor is configured to receive a call request from at least one external device via the access network and first IMS network corresponding to the first SIM card, and to send a preset response to the external device, when the call request is a dummy call request for creating a particular bearer corresponding to a specified call service between the electronic device and a specified entity of the access network.

9. The electronic device of claim 8 , wherein the processor is configured to determine whether the call request is a dummy call request on a basis of at least one of information on the external device included in the call request and information included in a part of the call request.

10. The electronic device of claim 1 , wherein the processor is configured to connect to a gateway of a second access network operated by an entity operating the second IMS network via the access network, obtain additional address information from the gateway of the second access network, and send a registration request to the second IMS network based on the additional address.

11. The electronic device of claim 1 , wherein the processor is configured to obtain at least one portion of address information from the access network, and to send to the second IMS network via the access network and first IMS network a registration request including the at least one portion of address information.

12. A method for supporting multiple Internet Protocol (IP) multimedia subsystem IMS networks in an electronic device, the method comprising:
communicatively connecting the electronic device to a first IMS network based on a first SIM card, and to a second IMS network based on a second SIM card;
after communicatively connecting the electronic device to the first IMS network and the second IMS network, establishing a dummy call creating a bearer to a first IMS network based on the first SIM card through an access network; and
after establishing the dummy call, establishing voice communication through LTE communication through the second IMS network through the bearer of the dummy call established via the access network based on the second SIM card,
wherein the first IMS network and the second IMS network provide voice communication through LTE service.

13. The method of claim 12 , wherein registering the electronic device in the second IMS network comprises: obtaining at least one address from the access network; and sending a registration request containing the at least one address to the second IMS network via the access network, and
wherein before the dummy call and the voice communication through LTE communication are established, the electronic device is communicatively connected to the access network based on the first SIM card.

14. The method of claim 12 , further comprising:
sending to a second device via the access network and second IMS network a first call request based on the second SIM card; and
sending a second call request based on the first SIM card to at least one external device via the access network and first IMS network, in response to initiation of the first call request.

15. The method of claim 14 , wherein sending a first call request to a second device comprises sending the second call request containing codec information of the second device.

16. The method of claim 14 , further comprising:
receiving a response for the first call request from the second device; and
obtaining codec information of the second device on the basis of information contained in the received response.

17. The method of claim 12 , further comprising sending a call request based on the second SIM card to a second device via the access network and second IMS network, and wherein the call request contains the first SIM card.

18. The method of claim 12 , further comprising:
receiving a call request corresponding to the first SIM card from at least one external device via the access network and first IMS network; and
sending, when the call request is a dummy call request for creating a particular bearer corresponding to a specified call service between the electronic device and a specified entity of the access network, a preset response to the external device.

19. The method of claim 18 , wherein receiving a call request co

Assignees

• Samsung Electronics Co Ltd

Inventors

• Yeoum Taesun
• Lim Hanna
• Hwang Sunmin

Classifications

• E04G21/16

  Tools or apparatus (devices for erecting fences E04H17/26) · CPC title

• B23P19/107 Primary

  using oscillating, rotating or vibrating movements · CPC title

• H04L65/1016 Primary

  IP multimedia subsystem [IMS] · CPC title

• B23P19/12

  Alignment of parts for insertion into bores · CPC title

• H04L65/1073

  Registration or de-registration · CPC title