Beam failure recovery request procedure

1. A method comprising:

initiating, by a wireless device, a beam failure recovery procedure in response to detecting a number of beam failure instances based on a first plurality of reference signals;

starting a beam failure recovery timer with a timer value in response to the detecting;

assessing, by a physical layer of the wireless device and during the beam failure recovery timer being running, first radio link quality of a second plurality of reference signals against a threshold;

completing the beam failure recovery procedure in response to the beam failure recovery timer expiring and the first radio link quality being below the threshold;

resetting a preamble transmission counter to an initial value in response to the completing of the beam failure recovery procedure; and

transmitting, to a base station, one or more radio resource control (RRC) messages indicating that the beam failure recovery procedure failed, the one or more RRC messages comprising:

first information that the beam failure recovery timer expired; and

second information that the first radio link quality was below the threshold.

2. The method of claim 1 , further comprising receiving, by the wireless device from a base station, one or more radio resource control messages comprising configuration parameters of the beam failure recovery procedure, the configuration parameters comprising:

the first plurality of reference signals;

the second plurality of reference signals;

the timer value of the beam failure recovery timer; and

the number of the beam failure instances.

3. The method of claim 1 , wherein the first plurality of reference signals comprise at least one of:

one or more CSI-RSs; or

one or more synchronization signal blocks (SSBs).

4. The method of claim 1 , wherein initiating the beam failure recovery procedure comprises setting a preamble transmission counter to an initial value.

5. The method of claim 1 , wherein the first radio link quality is a value of reference signal received power (RSRP).

6. The method of claim 1 , wherein the threshold is configured in a radio resource control message.

7. The method of claim 1 , wherein the first plurality of reference signals comprise one or more channel state information-reference signals (CSI-RSs).

8. The method of claim 1 , wherein a beam failure instance of the number of beam failure instances occurs when second radio link quality measured based on the first plurality of reference signals is worse than a first threshold.

9. The method of claim 8 , wherein the second radio link quality comprises a value of block error rate (BLER).

10. The method of claim 1 , further comprising:

selecting, during the assessing, a reference signal from the second plurality of reference signals in response to the first radio link quality of the reference signal being greater than the threshold;

transmitting a preamble associated with the reference signal;

stopping the beam failure recovery timer in response to receiving a downlink control information for a response to the preamble; and

completing the beam failure recovery procedure in response to the downlink control information.

11. The method of claim 10 , wherein the wireless device selects a second reference signal at a back-off time after the beam failure recovery timer expires in response to not receiving the downlink control information.

12. The method of claim 11 , wherein the back-off time is a value between zero and a configured back-off time value.

13. The method of claim 12 , further comprising initiating a contention-based random access procedure for the beam failure recovery procedure in response to stopping the beam failure recovery timer.

14. The method of claim 13 , further comprising ignoring, by a MAC entity of the wireless device, a beam failure instance indication from a physical layer of the wireless device in response to initiating the contention-based random access procedure for the beam failure recovery procedure.

15. The method of claim 13 , further comprising stopping a beam failure instance indication from a physical layer of the wireless device in response to initiating the contention-based random access procedure for the beam failure recovery procedure.

16. The method of claim 13 , wherein the contention-based random access procedure comprises:

transmitting a preamble associated with a reference signal of a plurality of reference signals;

monitoring a downlink control channel for a random access response; and

receiving the random access response during the monitoring.

17. The method of claim 1 , further comprising stopping the beam failure recovery timer in response to the first radio link quality of one of the second plurality of reference signals being below the threshold.

18. A method comprising:

initiating, by a wireless device, a beam failure recovery procedure in response to detecting a number of beam failure instances based on a first plurality of reference signals;

in response to initiating the beam failure recovery procedure, a MAC entity of the wireless device ignoring a beam failure instance indication from a physical layer of the wireless device;

starting a beam failure recovery timer with a timer value in response to the detecting;

assessing, by a physical layer of the wireless device and during the beam failure recovery timer being running, first radio link quality of a second plurality of reference signals against a threshold;

completing the beam failure recovery procedure in response to the beam failure recovery timer expiring and the first radio link quality being below the threshold; and

reporting, to a radio resource control layer of the wireless device, information indicating that the beam failure recovery procedure failed due to the first radio link quality being below the threshold.

19. A method comprising:

initiating, by a wireless device, a beam failure recovery procedure in response to detecting a number of beam failure instances based on a first plurality of reference signals;

in response to initiating the beam failure recovery procedure, stopping a beam failure instance indication by a physical layer of the wireless device;

starting a beam failure recovery timer with a timer value in response to the detecting;

assessing, by the physical layer of the wireless device and during the beam failure recovery timer being running, first radio link quality of a second plurality of reference signals against a threshold;

completing the beam failure recovery procedure in response to the beam failure recovery timer expiring and the first radio link quality being below the threshold; and

reporting, to a radio resource control layer of the wireless device, information indicating that the beam failure recovery procedure failed due to the first radio link quality being below the threshold.