Method and apparatus for power control
Embodiments of the present application are directed to a method and apparatus for power control. In an embodiment of the present application, the method includes transmitting an uplink signal, wherein a transmission power of the uplink signal is determined according to a power control scheme, and the power control scheme is selected from at least one of an open loop power control scheme, a first closed loop power control scheme, a second closed loop power scheme with power ramping step selection, a third closed loop power scheme with scaling factor to power adjustment indicator, a fourth closed loop power scheme with later uplink signal corresponding power adjustment indicator adoption.
1. A method performed by a user equipment (UE), the method comprising:
transmitting an uplink signal, wherein a transmission power of the uplink signal is determined according to a power control scheme selected from a set of power control schemes comprising a third closed loop power scheme with scaling factor to power adjustment indicator and a fourth closed loop power scheme with later uplink signal corresponding power adjustment indicator adoption.
2. The method of claim 1 , wherein the power control scheme is selected based on at least one of subcarrier spacing of the uplink signal, scheduling delay, resource unit (RU) size of the uplink signal, repetition number of the uplink signal, transmission gap, radio resource control (RRC) signaling, or a threshold.
3. The method of claim 1 , wherein the third closed loop power scheme with scaling factor to power adjustment indicator comprises a power control scheme that the transmission power of the uplink signal is determined by a power adjustment indicator indicated by a control signal and by a scaling factor.
4. The method of claim 3 , wherein the scaling factor is configured by higher layer, and the scaling factor is determined based on at least one of scheduling delay, resource unit (RU) size of the uplink signal, repetition number of the uplink signal, a transmission gap, radio resource control (RRC) signaling, or a threshold.
5. The method of claim 4 , wherein the threshold is configured by the RRC signaling or fixed.
6. The method of claim 1 , wherein the fourth closed loop power scheme with later uplink signal corresponding power adjustment indicator adoption comprises a power control scheme that the transmission power of the uplink signal is determined by a first number of power adjustment indicators indicated by control signals corresponding to the uplink signal and later uplink signals later than the uplink signal.
7. The method of claim 6 , wherein the first number is determined by a maximal hybrid automatic repeat request (HARQ) process number.
8. The method of claim 6 , wherein the control signals are between a second number of time units before a previous one uplink signal of the uplink signal and a third number of time units before the uplink signal, and wherein the second number and the third number are a fixed number or a minimum scheduling delay or configured by radio resource control (RRC) signaling.
9. An apparatus, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the apparatus to:
select a power control scheme from a set of power control schemes comprising a third closed loop power scheme with scaling factor to power adjustment indicator and a fourth closed loop power scheme with later uplink signal corresponding power adjustment indicator adoption;
determine a transmission power according to the selected power control scheme; and
transmit an uplink signal based on the determined transmission power.
10. The apparatus of claim 9 , wherein the power control scheme is further selected based on at least one of subcarrier spacing of the uplink signal, scheduling delay, resource unit (RU) size of the uplink signal, repetition number of the uplink signal, transmission gap, radio resource control (RRC) signaling, or a threshold.
11. A user equipment (UE) comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
select a power control scheme from a set of power control schemes comprising a third closed loop power scheme with scaling factor to power adjustment indicator and a fourth closed loop power scheme with later uplink signal corresponding power adjustment indicator adoption;
determine a transmission power according to the selected power control scheme; and
transmit an uplink signal based on the determined transmission power.
12. The UE of claim 11 , wherein the power control scheme is further selected based on at least one of subcarrier spacing of the uplink signal, scheduling delay, resource unit (RU) size of the uplink signal, repetition number of the uplink signal, a transmission gap, radio resource control (RRC) signaling, or a threshold.
13. The UE of claim 11 , wherein the third closed loop power scheme with scaling factor to power adjustment indicator comprises a power control scheme that the transmission power of the uplink signal is determined by a power adjustment indicator indicated by a control signal and by a scaling factor.
14. The UE of claim 13 , wherein the scaling factor is configured by higher layer, and the scaling factor is determined based on at least one of scheduling delay, resource unit (RU) size of the uplink signal, repetition number of the uplink signal, a transmission gap, radio resource control (RRC) signaling, or a threshold.
15. The UE of claim 14 , wherein the threshold is configured by the RRC signaling or fixed.
16. The UE of claim 11 , wherein the fourth closed loop power scheme with later uplink signal corresponding power adjustment indicator adoption comprises a power control scheme that the transmission power of the uplink signal is determined by a first number of power adjustment indicators indicated by control signals corresponding to the uplink signal and later uplink signals later than the uplink signal.
17. A processor for wireless communication, comprising:
at least one controller coupled with at least one memory and configured to cause the processor to:
select a power control scheme from a set of power control schemes comprising a third closed loop power scheme with scaling factor to power adjustment indicator and a fourth closed loop power scheme with later uplink signal corresponding power adjustment indicator adoption;
determine a transmission power according to the selected power control scheme; and
transmit an uplink signal based on the determined transmission power.
18. The processor of claim 17 , wherein the power control scheme is further selected based on at least one of subcarrier spacing of the uplink signal, scheduling delay, resource unit (RU) size of the uplink signal, repetition number of the uplink signal, transmission gap, radio resource control (RRC) signaling, or a threshold.
19. The processor of claim 17 , wherein the third closed loop power scheme with scaling factor to power adjustment indicator comprises a power control scheme that the transmission power of the uplink signal is determined by a power adjustment indicator indicated by a control signal and by a scaling factor.
20. The processor of claim 19 , wherein the scaling factor is configured by higher layer, and the scaling factor is determined based on at least one of scheduling delay, resource unit (RU) size of the uplink signal, repetition number of the uplink signal, a transmission gap, radio resource control (RRC) signaling, or a threshold.