Dropping transmission of uplink signals of a radio access technology

1. A method comprising:

receiving by a wireless device:

a first maximum total transmit power allowed for a first cell group of a first type of radio access technology; and

a second maximum total transmit power allowed for a second cell group of a second type of radio access technology that is different from the first type of radio access technology;

determining a total transmission power exceeds a power value, wherein the total transmission power is based on:

a first power for transmission of one or more first uplink signals via the first cell group, wherein the first power is less than or equal to the first maximum total transmit power; and

a second power for transmission of one or more second uplink signals via the second cell group, wherein the second power is less than or equal to the second maximum total transmit power;

dropping a scheduled transmission of the one or more first uplink signals of the first cell group of the first type of radio access technology, in response to:

the determining the total transmission power exceeds the power value; and

the first type of radio access technology having lower priority than the second type of radio access technology; and

transmitting, to a base station, at least one of the one or more second uplink signals.

2. The method of claim 1 , further comprising receiving, from the base station, one or more radio resource control (RRC) messages comprising first configuration parameters of a plurality of cells grouped in a plurality of cell groups comprising:

the first cell group comprising one or more first cells of the first type of radio access technology; and

the second cell group comprising one or more second cells of the second type of radio access technology.

3. The method of claim 1 , wherein the power value is a maximum transmit power of the wireless device.

4. The method of claim 1 , wherein the total transmission power exceeds the first power value comprises when a sum of the first power and second power exceeds a maximum transmit power of the wireless device.

5. The method of claim 1 , wherein:

the first type of radio access technology operates in a licensed band; and

the second type of radio access technology operates in an unlicensed band.

6. The method of claim 1 , wherein the second type of radio access technology operates according to a release of LTE technology.

7. The method of claim 1 , wherein the one or more first uplink signals comprise one or more first sounding reference signals.

8. The method of claim 1 , wherein the one or more first uplink signals comprise one or more first physical uplink shared channel signals.

9. The method of claim 1 , wherein the power value depends on whether at least one cell in the first cell group is activated.

10. The method of claim 1 , wherein the dropping the scheduled transmission of the one or more first uplink signals of the first cell group is based on at least one uplink channel transmit power priority.

11. 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:

a first maximum total transmit power allowed for a first cell group of a first type of radio access technology; and

a second maximum total transmit power allowed for a second cell group of a second type of radio access technology that is different from the first type of radio access technology;

determine a total transmission power exceeds a power value, wherein the total transmission power is based on:

a first power for transmission of one or more first uplink signals via the first cell group, wherein the first power is less than or equal to the first maximum total transmit power; and

a second power for transmission of one or more second uplink signals via the second cell group, wherein the second power is less than or equal to the second maximum total transmit power; and

drop a scheduled transmission of the one or more first uplink signals of the first cell group of the first type of radio access technology, in response to:

the determining the total transmission power exceeds the power value; and

the first type of radio access technology having lower priority than the second type of radio access technology; and

transmit, to a base station, at least one of the one or more second uplink signals.

12. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive, from the base station, one or more radio resource control (RRC) messages comprising first configuration parameters of a plurality of cells grouped in a plurality of cell groups comprising:

the first cell group comprising one or more first cells of the first type of radio access technology; and

the second cell group comprising one or more second cells of the second type of radio access technology.

13. The wireless device of claim 11 , wherein the power value is a maximum transmit power of the wireless device.

14. The wireless device of claim 11 , wherein:

the first type of radio access technology operates in a licensed band; and

the second type of radio access technology operates in an unlicensed band.

15. The wireless device of claim 11 , wherein the second type of radio access technology operates according to a release of LTE technology.

16. The wireless device of claim 11 , wherein the one or more first uplink signals comprise one or more first sounding reference signals.

17. The wireless device of claim 11 , wherein the one or more first uplink signals comprise one or more first physical uplink shared channel signals.

18. The wireless device of claim 11 , wherein the power value depends on whether at least one cell in the first cell group is activated.

19. The wireless device of claim 11 , wherein the dropping the scheduled transmission of the one or more first uplink signals of the first cell group is based on at least one uplink channel transmit power priority.

20. A method for use in a wireless device, the method comprising:

receiving:

a first maximum total transmit power allowed for a first cell group of a first type of radio access technology; and

a second maximum total transmit power allowed for a second cell group of a second type of radio access technology that is different from the first type of radio access technology;

determining a total transmission power exceeds a power value, wherein the total transmission power is based on:

a first power for transmission of one or more first uplink signals via the first cell group, wherein the first power is less than or equal to the first maximum total transmit power; and

a second power for transmission of one or more second uplink signals via the second cell group, wherein the second power is less than or equal to the second maximum total transmit power; and

dropping a scheduled transmission of the one or more first uplink signals of the first cell group of the first type of radio access technology, in response to:

the determining the total transmission power exceeds the power value; and

the first type of radio access technology having lower priority than the second type of radio access technology; and

transmitting, to a base station, at least one of the one or more second uplink signals.