Cell uplink selection control

1. A method comprising:

receiving, by a wireless device from a base station, at least one message comprising uplink configuration parameters for a cell of the base station, the uplink configuration parameters indicating:

a first uplink carrier;

a second uplink carrier; and

a power threshold for selecting one of the first uplink carrier and the second uplink carrier;

determining, by the wireless device, a scaled power threshold based on the configured power threshold and a moving speed of the wireless device;

selecting as a selected uplink carrier, by the wireless device, one of the first uplink carrier and the second uplink carrier based on the scaled power threshold; and

transmitting, by the wireless device, a random access preamble via the selected uplink carrier.

2. The method of claim 1 , wherein the uplink configuration parameters further comprise a scaling factor for the determining the scaled power threshold.

3. The method of claim 2 , wherein the uplink configuration parameters further comprise a second scaling factor for the selecting the one of the first uplink carrier and the second uplink carrier.

4. The method of claim 3 , wherein the wireless device employs the second scaling factor based on a service type of the wireless device.

5. The method of claim 1 , wherein the scaled power threshold is further based on a preconfigured scaling factor.

6. The method of claim 1 , wherein the determining further comprises increasing the configured power threshold to the scaled power threshold in response to the moving speed of the wireless device being higher than a moving speed value.

7. The method of claim 1 , wherein the first uplink carrier is a normal uplink carrier.

8. The method of claim 1 , wherein the second uplink carrier is a supplementary uplink carrier.

9. The method of claim 1 , wherein the first uplink carrier employs a higher frequency than the second uplink carrier.

10. The method of claim 1 , wherein the wireless device selects the second uplink carrier in response to a measured downlink quality of the cell being lower than the scaled power threshold.

11. The method of claim 10 , wherein the measured downlink quality is based on a received power of the cell.

12. The method of claim 1 , wherein the at least one message further comprises a radio resource control message.

13. The method of claim 1 , wherein the uplink configuration parameters further comprise a second power threshold for the determining the scaled power threshold when using an ultra reliable and low latency service.

14. The method of claim 1 , wherein the uplink configuration parameters further comprise at least one of:

first bandwidth information of the first uplink carrier; or

second bandwidth information of the second uplink carrier.

15. The method of claim 1 , wherein the cell is configured with at least one of:

a time division duplex; or

a frequency division duplex.

16. The method of claim 1 , wherein the first uplink carrier covers a smaller area than the second uplink carrier.

17. The method of claim 1 , further comprising receiving, by the wireless device from the base station, a random access response in response to transmitting the random access preamble.

18. The method of claim 1 , wherein the wireless device is in a radio resource control idle state or in a radio resource control inactive state.

19. The method of claim 1 , wherein the at least one message further comprises one or more system information blocks.

20. The method of claim 1 , wherein the at least one message further comprises at least one of:

a cell identifier of the cell;

a base station identifier of the base station; or

core network pool information of the base station.