Parallel transmission 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 that is different from the first type of radio access technology;
a first power parameter indicating a first maximum total power value allowed for uplink transmission via the first cell group; and
a second power parameter indicating a second maximum total power value allowed for uplink transmission via the second cell group;
determining a total transmission power exceeding a first 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 power value; 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 power value;
dropping scheduled transmission of the one or more first uplink signals of the first cell group in response to the first cell group being of the first type of radio access technology so that an updated total transmission power does not exceed the first power value; and
transmitting, to the base station, at least one of the one or more second uplink signals with the updated total transmission power via the second cell group.
2. The method of claim 1 , wherein the first power value is a maximum transmit power of the wireless device.
3. The method of claim 1 , wherein determining the total transmission power exceeding the first power value comprises:
calculating that a sum of the first power and second power exceeds a maximum transmit power of the wireless device.
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 second 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 first power value depends on whether at least one cell in the first cell group is activated.
9. 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.
10. 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.
11. 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 that is different from the first radio access technology;
a first power parameter indicating a first maximum total power value allowed for uplink transmission via the first cell group; and
a second power parameter indicating a second maximum total power value allowed for uplink transmission via the second cell group;
determining a total transmission power exceeding a first 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 power value; 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 power value;
scaling a transmission power of at least one of the one or more first uplink signals of the first cell group in response to the first cell group being of the first type of radio access technology so that an updated total transmission power does not exceed the first power value; and
transmitting, to the base station, at least one of:
the at least one of the one or more first uplink signals via the first cell group; and
at least one of the one or more second uplink signals via the second cell group.
12. The method of claim 11 , wherein the updated total transmission power is based on:
the first power; and
a third power based on the second power after the scaling.
13. The method of claim 11 , wherein the first power value is a maximum transmit power of the wireless device.
14. The method of claim 11 , wherein determining the total transmission power exceeding the first power value comprises:
calculating that a sum of the first power and second power exceeds a maximum transmit power of the wireless device.
15. The method 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.
16. The method of claim 11 , wherein the first type of radio access technology operates according to a release of LTE technology.
17. The method of claim 11 , wherein the one or more first uplink signals comprise one or more first physical uplink shared channel signals.
18. The method of claim 11 , wherein the first power value depends on whether at least one cell in the first cell group is activated.
19. The method of claim 11 , wherein the scaling the transmission power of at least one of the one or more first uplink signals of the first cell group is based on a priority order of the at least one uplink signal.
20. The method of claim 11 , 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.