Transmission method of physical signal, terminal and base station

1. A method of a user equipment (UE) for duplex mode switching, the method comprising:

receiving first configuration information;

determining a measurement time-frequency resource for a residual self-interference measurement based on the first configuration information;

performing the residual self-interference measurement on the measurement time-frequency resource to obtain a measurement result;

transmitting feedback information determined based on the measurement result;

receiving second configuration information based on the feedback information; and

identifying a duplex mode of the UE based on the second configuration information.

2. The method of claim 1 , wherein the first configuration information includes first indication information indicating the measurement time-frequency resource on a downlink channel for the residual self-interference measurement, and

wherein the determining the measurement time-frequency resource for the residual self-interference measurement based on the first configuration information comprises:

determining the measurement time-frequency resource based on the first indication information.

3. The method of claim 2 , wherein the measurement time-frequency resource is a time-frequency resource with zero power, and it is assumed that a base station does not transmit a signal on the time-frequency resource with zero power.

4. The method of claim 1 , wherein the first configuration information includes second indication information indicating the measurement time-frequency resource on an uplink channel for the residual self-interference measurement, and

wherein the determining the measurement time-frequency resource for the residual self-interference measurement based on the first configuration information comprises:

determining the measurement time-frequency resource based on the second indication information.

5. The method of claim 1 , further comprising: transmitting UE capability information comprising an indication of a self-interference cancellation capability of the UE.

6. The method of claim 1 ,

wherein the performing the residual self-interference measurement on the measurement time-frequency resource to obtain the measurement result comprises at least one of:

measuring a strength of the residual self-interference; or

measuring a signal-to-interference-and-noise ratio considering the residual self-interference, and

wherein the transmitting the feedback information determined based on the measurement result comprises:

determining at least one of the strength of the residual self-interference, the signal-to-interference-and-noise ratio considering the residual self-interference, or the signal-to-interference-and-noise ratio without considering the residual self-interference as the feedback information; and

transmitting the feedback information.

7. The method of claim 1 , wherein in a case where the current duplex mode of the UE is the full-duplex mode, the method further comprises:

receiving third indication information for indicating a full-duplex resource for receiving downlink data having a higher priority than the currently transmitted data; and

stopping a transmission of uplink data and receiving the downlink data having the higher priority, on the full-duplex resource.

8. The method of claim 1 , wherein in a case where the current duplex mode of the UE is the full-duplex mode, the method further comprises:

transmitting a request message for requesting to transmit uplink data having a higher priority than the currently transmitted data;

receiving fourth indication information indicating a full-duplex resource for the UE to transmit the uplink data having the higher priority in response to the request message; and

stopping the reception of downlink data and transmitting the uplink data having the higher priority, on the full-duplex resource.

9. A user equipment (UE), the UE comprising:

a transceiver; and

at least one processor configured to:

receive first configuration information,

determine a measurement time-frequency resource for a residual self-interference measurement based on the first configuration information,

perform the residual self-interference measurement on the measurement time-frequency resource to obtain a measurement result,

transmit feedback information determined based on the measurement result,

receive second configuration information based on the feedback information, and

identify the duplex mode of the UE based on the second configuration information.

10. A method of a base station (BS) for duplex mode switching, the method comprising:

transmitting first configuration information, wherein the first configuration information is used to determine a measurement time-frequency resource for a residual self-interference measurement;

receiving feedback information determined based on a measurement result, wherein the measurement result is obtained based on performing, by a user equipment (UE), the residual self-interference measurement on the measurement time-frequency resource;

determining second configuration information for configuring a duplex mode of the UE based on the feedback information; and

transmitting the second configuration information.

11. The method of claim 10 , wherein the first configuration information includes first indication information indicating the measurement time-frequency resource on a downlink channel for the residual self-interference measurement, and

wherein the measurement time-frequency resource is determined based on the first indication information.

12. The method of claim 10 , wherein the first configuration information includes second indication information indicating the measurement time-frequency resource on an uplink channel for the residual self-interference measurement, and

wherein the measurement time-frequency resource is determined based on the second indication information.

13. The method of claim 10 , further comprising: receiving UE capability information comprising an indication of a self-interference cancellation capability of the UE,

wherein the determining the second configuration information for configuring the duplex mode of the UE based on the feedback information comprises:

determining the second configuration information based on at least one of the feedback information and the UE capability information.

14. The method of claim 10 , wherein the determining the second configuration information for configuring the duplex mode of the UE based on the feedback information comprises at least one of:

determining the second configuration information based on at least one of the strength of the residual self-interference or the signal-to-interference-and-noise ratio considering the residual self-interference;

in a case where the feedback information includes a signal-to-interference-and-noise ratio without considering residual self-interference, determining the second configuration information based on at least one of the strength of the residual self-interference, the signal-to-interference-and-noise ratio considering residual self-interference, or the signal-to-interference-and-noise ratio without considering residual self-interference; and

in a case where the feedback information does not include a signal-to-interference-and-noise ratio without considering residual self-interference, determining the second configuration information based on at least one of the strength of the residual self-interference, the signal-to-interference-and-noise ratio considering residual self-interference, or the latest signal-to-interference-and-noise ratio considering residual self-interference feedback by the UE.

15. A base station (BS), the BS comprising:

a transceiver; and

at least one processor configured to:

transmit first configuration information, wherein the first configuration information is used to determine a measurement time-frequency resource for a residual self-interference measurement;

receive feedback information determined based on a measurement result, wherein the measurement result is obtained based on performing, by a user equipment (UE), the residual self-interference measurement on the measurement time-frequency resource;

determine second configuration information based on the feedback information; and

transmit the second configuration information.