Scaling transmission power of uplink signals of a wireless device

1. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to:

receive, from a base station, one or more radio resource control messages comprising:

at least one first power parameter indicating a first maximum total transmit power of a first group comprising one or more first cells of a first Radio Access Technology; and

at least one second power parameter indicating a second maximum total transmit power of a second group comprising one or more second cells of a second Radio Access Technology different from the first Radio Access Technology;

determine a first total power for transmission of one or more first signals via the first group exceeding the first maximum total transmit power;

scale first transmission power of at least one of the one or more first signals so that an updated first total power does not exceed the first maximum total transmit power;

determine a second total power for transmission of one or more second signals via the second group exceeding the second maximum total transmit power;

scale second transmission power of at least one of the one or more second signals so that an updated second total power does not exceed the second maximum total transmit power; and

transmit the one or more first signals with the updated first total power and the one or more second signals with the updated second total power.

2. The wireless device of claim 1 , wherein the scaling of the second transmission power is independent of a value of the first total power.

3. The wireless device of claim 1 , wherein the scaling of the first transmission power is independent of a value of the second total power.

4. The wireless device of claim 1 , wherein:

the first Radio Access Technology operates in a licensed band; and

the second Radio Access Technology operates in an unlicensed band.

5. The wireless device of claim 1 , wherein the first Radio Access Technology operates according to a release of LTE technology.

6. The wireless device of claim 1 , wherein the one or more first signals comprise one or more first sounding reference signals.

7. The wireless device of claim 1 , wherein the one or more first signals comprise one or more first physical uplink shared channel signals.

8. The wireless device of claim 1 , wherein the one or more second signals comprise one or more second physical uplink shared channel signals.

9. The wireless device of claim 1 , wherein the first maximum total transmit power depends on a number of activated cells in the first group.

10. The wireless device of claim 1 , wherein the scaling of the first transmission power of the at least one of the one or more first signals is based on a priority order of the at least one of the one or more first signals.

11. The wireless device of claim 1 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to perform a listen before talk before the transmission of the one or more first signals.

12. The wireless device of claim 1 , wherein the reception of the one or more radio resource control messages comprises receiving a cell power parameter indicating an allowable transmit power for a cell of the one or more first cells.

13. The wireless device of claim 1 , wherein the transmission of the one or more first signals overlaps in time with the transmission of the one or more second signals.

14. The wireless device of claim 1 , wherein a total transmit power of the wireless device is limited to a maximum output power, wherein the maximum output power comprises the first maximum total transmit power and the second maximum total transmit power.

15. The wireless device of claim 1 , wherein a total transmit power of the wireless device is limited to a maximum output power, wherein the total transmit power comprises the updated first total power and the second updated total power.

16. The wireless device of claim 15 , wherein the total transmit power depends on whether at least one cell in the first group is activated.

17. The wireless device of claim 15 , wherein the scaling of the first transmission power of the at least one of the one or more first signals is based on a priority order of the at least one of the one or more first signals.

18. The wireless device of claim 15 , further comprising performing a listen before talk before the transmission of the one or more first signals.

19. A system comprising:

a base station comprising:

one or more first processors; and

first memory storing first instructions that, when executed by the one or more first processors, cause the base station to transmit one or more radio resource control messages comprising:

at least one first power parameter indicating a first maximum total transmit power of a first group comprising one or more first cells of a first Radio Access Technology; and

at least one second power parameter indicating a second maximum total transmit power of a second group comprising one or more second cells of a second Radio Access Technology different from the first Radio Access Technology; and

a wireless device comprising:

one or more second processors; and

first memory storing first instructions that, when executed by the one or more first processors, cause the wireless device to:

receive the one or more radio resource control messages;

determine a first total power for transmission of one or more first signals via the first group exceeding the first maximum total transmit power;

scale first transmission power of at least one of the one or more first signals so that an updated first total power does not exceed the first maximum total transmit power;

determine a second total power for transmission of one or more second signals via the second group exceeding the second maximum total transmit power;

scale second transmission power of at least one of the one or more second signals so that an updated second total power does not exceed the second maximum total transmit power; and

transmit the one or more first signals with the updated first total power and the one or more second signals with the updated second total power.

20. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors, cause a wireless device to:

receive, from a base station, one or more radio resource control messages comprising:

at least one first power parameter indicating a first maximum total transmit power of a first group comprising one or more first cells of a first Radio Access Technology; and

at least one second power parameter indicating a second maximum total transmit power of a second group comprising one or more second cells of a second Radio Access Technology different from the first Radio Access Technology;

determine a first total power for transmission of one or more first signals via the first group exceeding the first maximum total transmit power;

scale first transmission power of at least one of the one or more first signals so that an updated first total power does not exceed the first maximum total transmit power;

determine a second total power for transmission of one or more second signals via the second group exceeding the second maximum total transmit power;

scale second transmission power of at least one of the one or more second signals so that an updated second total power does not exceed the second maximum total transmit power; and

transmit the one or more first signals with the updated first total power and the one or more second signals with the updated second total power.