Switching bandwidth parts based on beam failure recovery configuration

1. A method comprising:

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

based on the second downlink BWP being configured with beam failure recovery (BFR), switching 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 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.

2. The method of claim 1 , further comprising activating the first downlink BWP in a first slot.

3. The method of claim 2 , further comprising activating the first uplink BWP in a second slot.

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

5. The method of claim 1 , wherein the switching from the first downlink BWP to the second downlink BWP comprises activating the second downlink BWP.

6. The method of claim 1 , wherein the switching from the first downlink BWP to the second downlink BWP comprises deactivating the first downlink BWP.

7. The method of claim 6 , wherein the deactivating the first downlink BWP comprises not monitoring a downlink control channel of the first downlink BWP.

8. The method of claim 1 , further comprising:

activating 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.

9. The method of claim 8 , further comprising:

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

switching, 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.

10. The method of claim 8 , further comprising:

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

keeping, 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.

11. 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:

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

based on the second downlink BWP being configured with beam failure recovery (BFR), switch 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 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.

12. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to activate the first downlink BWP in a first slot.

13. The wireless device of claim 12 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to activate the first uplink BWP in a second slot.

14. The wireless device of claim 13 , wherein the first slot and the second slot are the same.

15. The wireless device of claim 11 , wherein the switch from the first downlink BWP to the second downlink BWP comprises activating the second downlink BWP.

16. The wireless device of claim 11 , wherein the switch from the first downlink BWP to the second downlink BWP comprises deactivating the first downlink BWP.

17. The wireless device of claim 16 , wherein the deactivation of the first downlink BWP comprises not monitoring a downlink control channel of the first downlink BWP.

18. The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:

activate the first downlink BWP and the first uplink BWP; and

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

19. The wireless device of claim 18 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:

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

switch, based on the second switching and the determination 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. A system comprising:

a base station; comprising:

one or more first processors; and

first memory storing first instructions that, when executed by the one or more first processors, cause the base station to transmit beam failure recovery (BFR) parameters; and

a wireless device comprising:

one or more second processors; and

second memory storing second instructions that, when executed by the one or more second processors, cause the wireless device to:

receive the beam failure recovery (BFR) parameters;

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

based on the second downlink BWP being configured with the BFR parameters, switch 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 from the second downlink BWP to a third downlink BWP; and

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