Channel configuration in a wireless device and wireless network
A wireless device receives from a base station one or more messages comprising configuration parameters of a plurality of cells. The plurality of cells comprising one or more first cells of a first type and one or more second cells of a second type. The wireless device determines one or more transmission powers. The wireless device transmits, via one or more cells, one or more signals employing the one or more transmission powers.
1. A method comprising:
receiving, by a wireless device from a 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:
a first cell group comprising one or more first cells of a first type of Radio Access Technology; and
a second cell group comprising one or more second cells of a second type of Radio Access Technology different from the first type of Radio Access Technology;
a first power parameter indicating a first total allowed power value of the first cell group; and
a second power parameter indicating a second total allowed power value of the second cell group;
determining a first total power for transmission of one or more first uplink signals via the first cell group exceeding the first total allowed power value;
determining a second total power for transmission of one or more second uplink signals via the second cell group exceeding the second total allowed power value;
scaling first transmission power of at least one of the one or more first uplink signals so that an updated first total power does not exceed the first total allowed power value;
scaling second transmission power of at least one of the one or more second uplink signals so that an updated second total power does not exceed the second total allowed power value; and
transmitting the one or more first uplink signals with the updated first total power via the first cell group and the one or more second uplink signals with the updated second total power via the second cell group.
2. The method of claim 1 , wherein the scaling the second transmission power is independent of a value of the first total power.
3. The method of claim 1 , wherein the scaling the first transmission power is independent of a value of the second total power.
4. 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.
5. The method of claim 1 , wherein the first type of Radio Access Technology operates according to a release of LTE technology.
6. The method of claim 1 , wherein the one or more first uplink signals comprise one or more first sounding reference signals.
7. The method of claim 1 , wherein the one or more first uplink signals comprise one or more first physical uplink shared channel signals.
8. The method of claim 1 , wherein the one or more second uplink signals comprise one or more second physical uplink shared channel signals.
9. The method 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.
10. The method of claim 9 , wherein the total transmit power depends on whether at least one cell in the first cell group is activated.
11. The method of claim 9 , wherein the scaling the first transmission power of the at least one of the one or more first uplink signals is based on a priority order of the at least one uplink signals.
12. The method of claim 9 , further comprising performing a listen before talk before the transmitting the one or more first uplink signals.
13. The method of claim 9 , wherein the one or more RRC messages further comprise a cell power parameter indicating an allowable transmit power for a cell of the plurality of cells.
14. The method of claim 9 , wherein the transmitting of the one or more first uplink signals overlaps in time with the transmitting of the one or more second uplink signals.
15. The method of claim 1 , wherein the first total allowed power value depends on a number of activated cells in the first cell group.
16. The method of claim 1 , wherein the scaling the first transmission power of the at least one of the one or more first uplink signals is based on a priority order of the at least one uplink signals.
17. The method of claim 1 , further comprising performing a listen before talk before the transmitting the one or more first uplink signals.
18. The method of claim 1 , wherein the one or more RRC messages further comprise a cell power parameter indicating an allowable transmit power for a cell of the plurality of cells.
19. The method of claim 1 , wherein the transmitting of the one or more first uplink signals overlaps in time with the transmitting of the one or more second uplink signals.
20. The method 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 total allowed power value and the second total allowed power value.