Method and apparatus for operation of multi-SIM device

1. A method of allocating radio frequency (RF) resources by a multi-subscriber identification module (SIM) device including at least a first SIM and a second SIM, the method comprising:

determining a frequency of performing RF resource allocation to the second SIM based on a data communication state of the first SIM and a received signal state of the second SIM; and

allocating the RF resources to the second SIM based on the frequency of performing the RF resource allocation,

wherein the first SIM is in a connected mode, and

wherein the second SIM is in an idle state.

2. The method of claim 1 , wherein the data communication state of the first SIM includes at least one of throughput of the first SIM and a communication duration time of the first SIM.

3. The method of claim 2 , wherein determining the frequency of performing the RF resource allocation to the second SIM comprises:

determining the frequency of performing the RF resource allocation as a first value; and

if the throughput of the first SIM increases, determining the frequency of performing the RF resource allocation as a second value less than the first value.

4. The method of claim 2 , wherein determining the frequency of performing the RF resource allocation to the second SIM comprises:

determining the frequency of performing the RF resource allocation as a first value; and

if the data communication duration time of the first SIM increases, determining the frequency of performing the RF resource allocation as a second value less than the first value.

5. The method of claim 2 , wherein the throughput of the first SIM is determined based on an amount of data transmitted or received by the first SIM during a predetermined previous period of time.

6. The method of claim 2 , wherein the data communication duration time of the first SIM is determined based on a period of time during which the first SIM continuously transmits or receives an amount of data greater than or equal to a threshold value.

7. The method of claim 1 , wherein the received signal state of the second SIM is determined based on at least one of a strength and a quality of a reference signal received by the second SIM from a serving base station.

8. The method of claim 1 , wherein determining the frequency of performing the RF resource allocation to the second SIM comprises:

determining the frequency of performing the RF resource allocation as a first value; and

if the received signal state of the second SIM improves, determining the frequency of performing the RF resource allocation as a second value greater than the first value.

9. The method of claim 1 , wherein allocating the RF resources to the second SIM comprises randomly allocating the RF resources to the second SIM according to a probability determined based on the frequency of performing the RF resource allocation.

10. The method of claim 1 , wherein allocating the RF resources to the second SIM comprises periodically allocating the RF resources to the second SIM according to a period determined based on the frequency of performing the RF resource allocation.

11. A multi-subscriber identification module (SIM) device including at least a first SIM and a second SIM, the multi-SIM device comprising:

a transceiver; and

a processor connected to the transceiver,

wherein the processor is configured to:

determine a frequency of performing RF resource allocation to the second SIM based on a data communication state of the first SIM and a received signal state of the second SIM; and

allocate the RF resources to the second SIM based on the frequency of performing the RF resource allocation,

wherein the first SIM is in a connected mode, and

wherein the second SIM is in an idle state.

12. The multi-SIM device of claim 11 , wherein the data communication state of the first SIM includes at least one of throughput of the first SIM and a data communication duration time of the first SIM.

13. The multi-SIM device of claim 12 , wherein the throughput of the first SIM is determined based on an amount of data transmitted or received by the first SIM during a predetermined previous period of time, and the processor is further configured to:

determine the frequency of performing the RF resource allocation as a first value; and

if the throughput of the first SIM increases, determine the frequency of performing the RF resource allocation to the second SIM based on a determination of the frequency of performing the RF resource allocation as a second value less than the first value.

14. The multi-SIM device of claim 12 , wherein the data communication duration time of the first SIM is determined based on a period of time during which the first SIM continuously transmits or receives data greater than or equal to a threshold value, and the processor is further configured to:

determine the frequency of performing the RF resource allocation to the second SIM as a first value; and

if the data communication duration time of the first SIM increases, determine the frequency of performing the RF resource allocation to the second SIM based on a determination of the frequency of performing the RF resource allocation as a second value less than the first value.

15. The multi-SIM device of claim 11 , wherein the processor is further configured to randomly allocate the RF resources to the second SIM according to a probability determined based on the frequency of performing the RF resource allocation.

16. A chip for controlling a multi-subscriber identification module (SIM) device including at least a first SIM and a second SIM, the chip configured to:

determine a frequency of performing RF resource allocation to the second SIM based on a data communication state of the first SIM and a received signal state of the second SIM; and

allocate the RF resources to the second SIM based on the frequency of performing the RF resource allocation,

wherein the first SIM is in a connected mode, and

wherein the second SIM is in an idle state.

17. The chip of claim 16 , wherein the data communication state of the first SIM includes at least one of throughput of the first SIM and a data communication duration time of the first SIM.

18. The chip of claim 17 , wherein the throughput of the first SIM is determined based on an amount of data transmitted or received by the first SIM during a predetermined previous period of time, and the chip is further configured to:

determine the frequency of performing the RF resource allocation as a first value; and

if the throughput of the first SIM increases, determine the frequency of performing the RF resource allocation to the second SIM based on a determination of the frequency of performing the RF resource allocation as a second value less than the first value.

19. The chip of claim 17 , wherein the data communication duration time of the first SIM is determined based on a period of time during which the first SIM continuously transmits or receives an amount of data greater than or equal to a threshold value, and the chip is further configured to:

determine the frequency of performing the RF resource allocation as a first value; and

if the data communication duration time of the first SIM increases, determine the frequency of performing the RF resource allocation to the second SIM based on a determination of the frequency of performing the RF resource allocation as a second value less than the first value.

20. The chip of claim 16 , wherein the chip is further configured to randomly allocate the RF resources to the second SIM according to a probability determined based on the frequency of performing the RF resource allocation.