Uplink bandwidth part switching based on beam failure recovery configuration

1. A method comprising:

switching, by a base station and for a wireless device, from a first downlink bandwidth part (BWP) to a second downlink BWP identified with a downlink BWP index;

switching, for the wireless device and based on the second downlink BWP being configured with beam failure recovery (BFR) for the wireless device, from a first uplink BWP to a second uplink BWP identified with an uplink BWP index that is the same as the downlink BWP index;

switching, for the wireless device, from the second downlink BWP to a third downlink BWP; and

based on the third downlink BWP not being configured with BFR, keeping the second uplink BWP as an active uplink BWP for the wireless device.

2. The method of claim 1 , further comprising:

activating, for the wireless device, the first downlink BWP in a first slot; and

activating, for the wireless device, the first uplink BWP in a second slot.

3. The method of claim 2 , wherein the first slot and the second slot are the same.

4. The method of claim 1 , wherein the switching from the first downlink BWP to the second downlink BWP comprises activating the second downlink BWP for the wireless device.

5. The method of claim 1 , wherein the switching from the first downlink BWP to the second downlink BWP comprises deactivating the first downlink BWP for the wireless device.

6. The method of claim 1 , further comprising:

activating, for the wireless device, the first downlink BWP and the first uplink BWP; and

second switching from the first uplink BWP to the second uplink BWP, as the active uplink BWP, identified with the uplink BWP index.

7. The method of claim 6 , further comprising:

determining that the second uplink BWP is configured with one or more second BFR parameters; and

switching, for the wireless device and based on the second switching and the determining that the second uplink BWP is configured with one or more second BFR parameters, from the first downlink BWP to the second downlink BWP, as an active downlink BWP, identified with a second downlink BWP index that is the same as the uplink BWP index.

8. The method of claim 6 , further comprising:

determining that the second uplink BWP is not configured with one or more second BFR parameters; and

keeping, for the wireless device and based on the second switching and the determining that the second uplink BWP is not configured with one or more second BFR parameters, the first downlink BWP as an active downlink BWP.

9. 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:

switch, for a wireless device, from a first downlink bandwidth part (BWP) to a second downlink BWP identified with a downlink BWP index;

switch, for the wireless device and based on the second downlink BWP being configured with beam failure recovery (BFR) for the wireless device, from a first uplink BWP to a second uplink BWP identified with an uplink BWP index that is the same as the downlink BWP index;

switch, for the wireless device, from the second downlink BWP to a third downlink BWP; and

based on the third downlink BWP not being configured with BFR, keep the second uplink BWP as an active uplink BWP for the wireless device.

10. The base station of claim 9 , wherein the instructions further cause the base station to:

activate, for the wireless device, the first downlink BWP in a first slot; and

activate, for the wireless device, the first uplink BWP in a second slot.

11. The base station of claim 10 , wherein the first slot and the second slot are the same.

12. The base station of claim 9 , wherein to switch from the first downlink BWP to the second downlink BWP, the instructions further cause the base station to activate the second downlink BWP for the wireless device.

13. The base station of claim 9 , wherein to switch from the first downlink BWP to the second downlink BWP, the instructions further cause the base station to deactivate the first downlink BWP for the wireless device.

14. The base station of claim 9 , wherein the instructions further cause the base station to:

activate, for the wireless device, the first downlink BWP and the first uplink BWP; and

second switch, for the wireless device from the first uplink BWP to the second uplink BWP, as the active uplink BWP, identified with the uplink BWP index.

15. The base station of claim 14 , wherein the instructions further cause the base station to:

determine that the second uplink BWP is configured with one or more second BFR parameters; and

switch, for the wireless device and based on the second switching and the determining that the second uplink BWP is configured with one or more second BFR parameters, from the first downlink BWP to the second downlink BWP, as an active downlink BWP, identified with a second downlink BWP index that is the same as the uplink BWP index.

16. The base station of claim 14 , wherein the instructions further cause the base station to:

determine that the second uplink BWP is not configured with one or more second BFR parameters; and

keep, for the wireless device and based on the second switching and the determining that the second uplink BWP is not configured with one or more second BFR parameters, the first downlink BWP as an active downlink BWP.

17. A non-transitory computer-readable storage medium comprising instructions that, when executed by one or more processors of a base station, cause the base station to:

switch, for a wireless device, from a first downlink bandwidth part (BWP) to a second downlink BWP identified with a downlink BWP index;

switch, for the wireless device and based on the second downlink BWP being configured with beam failure recovery (BFR) for the wireless device, from a first uplink BWP to a second uplink BWP identified with an uplink BWP index that is the same as the downlink BWP index;

switch, for the wireless device, from the second downlink BWP to a third downlink BWP; and

based on the third downlink BWP not being configured with BFR, keep the second uplink BWP as an active uplink BWP for the wireless device.

18. The non-transitory computer-readable storage medium of claim 17 , wherein to switch from the first downlink BWP to the second downlink BWP, the instructions further cause the base station to:

activate the second downlink BWP for the wireless device; and

deactivate the first downlink BWP for the wireless device.

19. The non-transitory computer-readable storage medium of claim 17 , wherein the instructions further cause the base station to:

activate, for the wireless device, the first downlink BWP and the first uplink BWP;

second switch, for the wireless device from the first uplink BWP to the second uplink BWP, as the active uplink BWP, identified with the uplink BWP index;

determine that the second uplink BWP is configured with one or more second BFR parameters; and

switch, for the wireless device and based on the second switching and the determining that the second uplink BWP is configured with one or more second BFR parameters, from the first downlink BWP to the second downlink BWP, as an active downlink BWP, identified with a second downlink BWP index that is the same as the uplink BWP index.

20. The non-transitory computer-readable storage medium of claim 17 , wherein the instructions further cause the base station to:

activate, for the wireless device, the first downlink BWP and the first uplink BWP;

second switch, for the wireless device from the first uplink BWP to the second uplink BWP, as the active uplink BWP, identified with the uplink BWP index;

determine that the second uplink BWP is not configured with one or more second BFR parameters; and

keep, for the wireless device and based on the second switching and the determining that the second uplink BWP is not configured with one or more second BFR parameters, the first downlink BWP as an active downlink BWP.