Wireless communication device and method of connecting wireless communication

1. A method of performing wireless communication for a wireless communication device comprising a first Subscriber Identity Module (SIM) and a second SIM, the method comprising:

performing a first wireless communication with a first terminal device through the first SIM;

receiving a request for connection of a second wireless communication from a second terminal device through the second SIM;

transmitting, via the first SIM, a request for connection of a third wireless communication to the second terminal device, or transmitting, via the second SIM, the request for connection of the third wireless communication to the first terminal device; and

performing the third wireless communication with the second terminal device through the first SIM based on an accept signal received from the second terminal device while performing the first wireless communication through the first SIM, or performing the third wireless communication with the first terminal device through the second SIM based on an accept signal received from the first terminal device while performing the second wireless communication through the second SIM.

2. The method of claim 1 , wherein the performing the third wireless communication further comprises:

placing the first wireless communication on hold; and

performing the second wireless communication.

3. The method of claim 1 , wherein the performing the third wireless communication further comprises:

ending the third wireless communication with the second terminal device based on a refuse signal received from the second terminal device or ending the third wireless communication with the first terminal device based on a refuse signal received from the first terminal device.

4. The method of claim 1 , wherein the transmitting the request for connection comprises:

obtaining information indicative of whether the first SIM and the second SIM are both included in the wireless communication device,

wherein the request for connection of the third wireless communication includes the information indicative of whether the first SIM and the second SIM are both included in the wireless communication device.

5. The method of claim 4 , wherein the information indicative of whether the first SIM and the second SIM are both included in the wireless communication device comprises at least one of an Important Call Indicator, a Subject, an Image, a Location, a Call Composer ID, or a Session Initiation Protocol (SIP) Call ID.

6. The method of claim 1 , further comprising:

determining a SIM set to be used for a plurality of wireless communications among the first SIM and the second SIM as a target SIM.

7. The method of claim 1 , further comprising:

determining one of the first SIM or the second SIM as a target SIM performing third wireless communication in response to receiving a selection of the one of the first SIM or the second SIM.

8. The method of claim 7 , further comprising:

ending the first wireless communication in response to receiving a selection not indicating one of the first SIM or the second SIM.

9. A wireless communication device comprising:

a first Subscriber Identity Module (SIM);

a second SIM; and

processing circuitry configured to

receive a request for a second call from a second terminal device through the second SIM while a first call is being performed with a first terminal device through the first SIM,

accept the second call in response to the request for a second call from the second terminal device,

control the second SIM to switch the second call to a call active state,

control the first SIM to switch the first call to a call hold state, and

control the first SIM to obtain information about the second terminal device from the second SIM and transmit a request for a third call to the second terminal device based on the information about the second terminal device, or control the second SIM to obtain the information about the first terminal device and transmit the request for the third call to the first terminal device.

10. The wireless communication device of claim 9 , wherein the request for the third call includes at least one of an Important Call Indicator, a Subject, Image, a Location, a Call Composer ID, and/or a Session Initiation Protocol (SIP) Call ID.

11. The wireless communication device of claim 9 , wherein the processing circuitry is configured to cause the wireless communication device to:

control the second SIM to end the second call in response to receiving an accept signal from the second terminal device and

control the first SIM to perform the third call with the second terminal device, or control the first SIM to end the first call in response to receiving an accept signal from the first terminal device and control the second SIM to perform the third call with the first terminal device.

12. The wireless communication device of claim 11 , wherein the processing circuitry is configured to cause the wireless communication device to:

switch the third call to a call active state; and

control the first SIM to maintain the call hold state of the first call, or control the second SIM to maintain the call hold state of the second call.

13. The wireless communication device of claim 9 , wherein the processing circuitry is configured to cause the wireless communication device to:

control the second SIM to end the second call in response to receiving a refuse signal from the second terminal device; and

control the first SIM to switch the first call to a call active state, or

control the first SIM to end the first call in response to receiving a refuse signal from the first terminal device and control the second SIM to switch the second call to the call active state.

14. The method of claim 8 , wherein

the performing the third wireless communication with the second terminal device through the first SIM is performed in response to receiving a selection of the first SIM via a user interface;

the performing the third wireless communication with the first terminal device through the second SIM is performed in response to receiving a selection of the second SIM via the user interface;

a plurality of options provided by the user interface includes ending the first wireless communication; and

the ending the first wireless communication is performed in response to receiving a selection for ending the first wireless communication among the plurality of options.