Control of terminal-requested power reduction

1. A method, carried out in a radio network node, for configuring uplink output power of radio transmission from a radio terminal, said method comprising:

determining a demand power reduction based on a maximum power level associated with a first uplink duty cycle;

transmitting, to a radio network node, an indication of the demand power reduction; and

receiving, from the network node, an indication of an actual uplink duty cycle and of a target power reduction associated with the actual uplink duty cycle;

wherein the receiving comprises receiving, from the network node, network scheduling for an uplink transmission of the radio terminal in accordance with the actual uplink duty cycle; and

configuring the output power based on the target power reduction.

2. The method of claim 1 , wherein the target power reduction is different from the demand power reduction.

3. The method of claim 1 , wherein the target power reduction is smaller than the demand power reduction.

4. The method of claim 3 , wherein the actual uplink duty cycle has a lower value than the first uplink duty cycle.

5. The method of claim 1 , wherein the target power reduction is larger than the demand power reduction.

6. The method of claim 5 , wherein the actual uplink duty cycle is different from the first uplink duty cycle.

7. The method of claim 5 , wherein the actual uplink duty cycle has a higher value than the first uplink duty cycle.

8. The method of claim 1 , comprising

transmitting, to the network node, an indication of the first uplink duty cycle.

9. The method of claim 1 , comprising

transmitting spatial relation information for an uplink beam associated with said target power reduction.

10. The method of claim 1 , wherein determining a demand power reduction is carried out for each one of a plurality of uplink beams, wherein said indication of the demand power reduction indicates a power value for each of said plurality of uplink beams.

11. The method of claim 10 , wherein the indication of a target power reduction indicates power value for each of said plurality of uplink beams.

12. The method of claim 10 , wherein said indication of the demand power reduction indicates a beam-specific value for a reference beam and a relative value, associated with the beam-specific value, for another beam among said plurality of uplink beams.

13. A method, carried out in a radio network node, for configuring uplink output power of radio transmission from a radio terminal, comprising

receiving, from the radio terminal, an indication of a demand power reduction based on a maximum power level, associated with uplink transmission with a first uplink duty cycle;

determining a target power reduction for the radio terminal;

determining an actual uplink duty cycle associated with the target power reduction associated with the target power reduction;

transmitting, to the radio terminal, an indication of the determined target power reduction to apply by the radio terminal for configuring the output power; and

wherein the transmitting comprises scheduling uplink transmission from the terminal in accordance with the actual uplink duty cycle.

14. The method of claim 13 , wherein the target power reduction is different from the demand power reduction.

15. The method of claim 13 , wherein the target power reduction is smaller than the demand power reduction.

16. The method of claim 13 , wherein the target power reduction is larger than the demand power reduction.

17. The method of claim 13 , wherein

the target power reduction is smaller than the demand power reduction; and

the actual uplink duty cycle has a lower value than the first uplink duty cycle.

18. The method of claim 13 , wherein the target power reduction is larger than the demand power reduction; and

the actual uplink duty cycle has a higher value than the first uplink duty cycle.

19. The method of claim 13 , comprising

receiving spatial relation information for an uplink beam associated with said demand power reduction.

20. The method of claim 19 , wherein the indication of a target power reduction indicates at least one uplink beam for the terminal to use.

21. The method of claim 13 , wherein said indication of the demand power reduction indicates a power value for each of a plurality of uplink beams.

22. The method of claim 21 , wherein said indication of the demand power reduction indicates a beam-specific value for a reference beam and a relative value, associated with the beam-specific value, for another beam among said plurality of uplink beams.

23. The method of claim 21 , wherein the indication of a target power reduction indicates a power value for each of said plurality of uplink beams.

24. The method of claim 13 , wherein the target power reduction and the actual uplink duty cycle are controlled in dependence of each other, such a total transmit power of the terminal remains below a threshold value.

25. A radio terminal, comprising:

a radio transceiver,

logic configured to communicate data, via the radio transceiver, with a radio network node, wherein the logic is further configured to

determine a demand power reduction based on a maximum power level, associated with a first uplink duty cycle;

transmit, to a radio network node, an indication of the demand power reduction;

receive, from the network node, an indication of a target power reduction and an actual uplink duty cycle associated with the target power reduction; and

receive, from the network node, network scheduling for an uplink transmission of the radio terminal in accordance with the actual uplink duty cycle; and

configure the output power based on the target power reduction.

26. A radio network node, for configuring uplink output power of radio transmission from a radio terminal, comprising:

a radio transceiver,

logic configured to communicate data via the radio transceiver, wherein the logic is configured to

receive, from the radio terminal, an indication of a demand power reduction based on a maximum power level, associated with uplink transmission with a first uplink duty cycle;

determine a target power reduction for the radio terminal;

transmit, to the radio terminal, an indication of the target power reduction to apply by the radio terminal for configuring the output power;

determine, an actual uplink duty cycle associate with the target power reduction; and

schedule, an uplink transmission from the terminal in accordance with the actual uplink duty cycle.