Scaling transmission power of uplink signals of a wireless device
A wireless device receives radio resource control messages indicating: a first maximum total transmit power of a first group comprising first cell(s) of a first frequency band; and a second maximum total transmit power of a second group comprising second cell(s) of a second frequency band. A first total power for transmission of first signal(s) via the first group exceeding the first maximum total transmit power is determined. First transmission power of first signal(s) are scaled so that an updated first total power does not exceed the first maximum total transmit power. Second total power for transmission of second signal(s) via the second group exceeding the second maximum total transmit power is determined. Second transmission power of second signal(s) are scaled so that an updated second total power does not exceed the second maximum total transmit power.
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 frequency band; 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 frequency band different from the first frequency band;
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 frequency band operates according to a first Radio Access Technology; and
the second frequency band operates according to a second Radio Access Technology.
5. The wireless device of claim 1 , wherein the one or more first signals comprise at least one of:
one or more first sounding reference signals; or
one or more first physical uplink shared channel signals.
6. The wireless device of claim 1 , wherein the one or more second signals comprise one or more second physical uplink shared channel signals.
7. The wireless device of claim 1 , wherein the first maximum total transmit power depends on a number of activated cells in the first group.
8. 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.
9. The wireless device of claim 1 , wherein the receiving 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.
10. 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.
11. 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.
12. 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 updated second total power.
13. The wireless device of claim 12 , wherein the total transmit power depends on whether at least one cell in the first group is activated.
14. The wireless device of claim 12 , 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.
15. 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 frequency band; 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 frequency band different from the first frequency band;
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.
16. A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
transmit, to a wireless device, 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 frequency band; 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 frequency band different from the first frequency band; and
receive:
one or more first signals via the first group, wherein a first transmission power of at least one of the one or more first signals is scaled based on a first total power for transmission of the one or more first signals exceeding the first maximum total transmit power; and
one or more second signals via the second group, wherein a second transmission power of at least one of the one or more second signals is scaled based on a second total power for transmission of the one or more second signals exceeding the second maximum total transmit power.
17. The base station of claim 16 , wherein the second transmission power is scaled independent of a value of the first total power.
18. The base station of claim 16 , wherein:
the first frequency band operates according to a first Radio Access Technology; and
the second frequency band operates according to a second Radio Access Technology.
19. The base station of claim 16 , wherein the first maximum total transmit power depends on a number of activated cells in the first group.
20. The base station of claim 16 , 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.