Electronic device and method for determining uplink operation in wireless communication system

1. An electronic device, comprising:

a first communication circuit performing first wireless communication using a first frequency band;

a second communication circuit performing second wireless communication using a second frequency band;

a processor operatively connected with the first communication circuit and the second communication circuit; and

a memory operatively connected with the processor and configured to store information regarding the first frequency band and the second frequency band, wherein the memory stores instructions configured to, when executed, enable the processor to:

perform a communication connection with a first base station using the first communication circuit to receive a first signal from the first base station;

receive a second signal from a second base station using the second communication circuit, based on the information regarding the second frequency band while performing the communication connection with the first base station;

select one of a single uplink operation (SUO) or a dual uplink operation (DUO), thereby resulting in a selected uplink operation, based on information obtained or measured in response to receiving the first signal or the second signal; and

transmit information regarding the selected uplink operation to the first base station,

wherein the instructions are configured to enable the processor to:

determine a center frequency of the first frequency band based on the first signal;

determine a center frequency of the second frequency band based on the second signal; and

select one of the single uplink operation (SUO) or the dual uplink operation (DUO) based on at least part of the center frequency of the first frequency band or the center frequency of the second frequency band, and

wherein the center frequency of the first frequency band is a harmonic frequency of the center frequency of the second frequency band.

2. The electronic device of claim 1 , wherein the first frequency band and the second frequency band are included in a problematic band combination as defined by 3rd generation partnership project (3GPP) WG RAN4, and wherein

the first signal and the second signal include at least one of a synchronization signal or a reference signal.

3. The electronic device of claim 1 , wherein the instructions are configured to enable the processor to transmit the information regarding the selected uplink operation to the first base station using user equipment (UE) capability transmission.

4. The electronic device of claim 1 , wherein the instructions are further configured to enable the processor to:

compare a strength of the first signal with a first threshold; and

select one of the single uplink operation (SUO) or the dual uplink operation (DUO) based on a result of the comparison.

5. An electronic device, comprising:

a first communication circuit performing first wireless communication using a first frequency band;

a second communication circuit performing second wireless communication using a second frequency band;

a processor operatively connected with the first communication circuit and the second communication circuit; and

a memory operatively connected with the processor, wherein

the memory stores instructions configured to, when executed, enable the processor to:

perform a communication connection with a first base station using the first communication circuit;

perform wireless communication in a first operation, which is one of a single uplink operation (SUO) or a dual uplink operation (DUO), with a second base station using the second communication circuit;

determine whether to switch to a second operation, which is different from the first operation, based on information measured or identified using the first communication circuit or the second communication circuit while performing the first operation; and

transmit a first message indicating to switch from the first operation to the second operation to the first base station based on the determination,

wherein the first operation is the dual uplink operation (DUO), and the second operation is the single uplink operation (SUO), and

wherein the instructions are configured to enable the processor to:

measure a communication status with the second base station based on at least one of a number of retransmissions of the first base station, a reception failure rate of the electronic device, or a bit error rate (BER) of a packet received from the first base station, during the dual uplink operation; and

transmit the first message to the first base station based on a result of the measurement.

6. The electronic device of claim 5 , wherein the instructions are configured to enable the processor to transmit the first message to the first base station using user equipment (UE) capability update.

7. The electronic device of claim 5 , wherein the first operation is the single uplink operation (SUO), and the second operation is the dual uplink operation (DUO), and wherein

the instructions are configured to enable the processor to:

measure a strength of a signal received from the first base station while performing the single uplink operation;

compare the strength of the signal with a threshold; and

transmit the first message to the first base station based on a result of the comparison.

8. The electronic device of claim 5 , wherein

the instructions are configured to enable the processor to:

identify whether the second base station supports a supplementary uplink (SUL) band based on at least part of a relationship between the first frequency band and the second frequency band; and

transmit the first message to the first base station based on a result of the identification.

9. A method for determining an uplink operation by an electronic device performing communication with a first base station using a first frequency band and communication with a second base station using a second frequency band in a wireless communication system, the method comprising:

receiving a first signal from the first base station, using a first communication circuit;

receiving a second signal from the second base station, using a second communication circuit while performing a communication connection with the first base station;

selecting one of a single uplink operation (SUO) or a dual uplink operation (DUO), thereby resulting in a selected uplink operation, based on at least one of information obtained or measured in response to receiving the first signal or the second signal or second information previously configured; and

transmitting information regarding the selected uplink operation to the first base station,

wherein selecting the one of the single uplink operation (SUO) or the dual uplink operation (DUO) comprises:

determining a center frequency of the first frequency band based on the first signal;

determining a center frequency of the second frequency band based on the second signal;

determining whether the center frequency of the first frequency band is a harmonic frequency of the center frequency of the second frequency band; and

selecting the one of the single uplink operation (SUO) or the dual uplink operation (DUO) based on a result of the determination.

10. The method of claim 9 , wherein transmitting the information regarding the selected uplink operation includes transmitting the information regarding the uplink operation to the first base station using user equipment (UE) capability transmission.

11. The method of claim 9 , wherein the first signal and the second signal include at least one of a synchronization signal or a reference signal.

12. The method of claim 9 , further comprising:

comparing a strength of the first signal with a first threshold; and

selecting one of the single uplink operation (SUO) or the dual uplink operation (DUO) based on a result of the comparison.