Listen before talk with preamble repetitions

1 . A method comprising:

determining, by a wireless device, a first plurality of repetitions of a first preamble scheduled for transmission for a random-access procedure;

suspending, by the wireless device, a power-ramping counter of the random-access procedure based on not transmitting each repetition of the first plurality of repetitions of the first preamble of the random-access procedure; and

transmitting, by the wireless device, a second preamble with a transmit power that is determined based on the power-ramping counter for the random-access procedure.

2 . The method of claim 1 , wherein not transmitting each repetition of the first plurality of repetitions is based on failing to transmit each repetition of the first plurality of repetitions of the first preamble.

3 . The method of claim 1 , further comprising receiving, by the wireless device, one or more configuration parameters.

4 . The method of claim 3 , wherein the one or more configuration parameters comprise one or more broadcast configuration parameters.

5 . The method of claim 3 , wherein the one or more configuration parameters indicate one or more reference signals.

6 . The method of claim 5 , further comprising determining the first plurality of repetitions based on a radio link quality of a reference signal of the one or more reference signals.

7 . 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 at least to perform:

determining, by a wireless device, a first plurality of repetitions of a first preamble scheduled for transmission for a random-access procedure;

suspending, by the wireless device, a power-ramping counter of the random-access procedure based on not transmitting each repetition of the first plurality of repetitions of the first preamble of the random-access procedure; and

transmitting, by the wireless device, a second preamble with a transmit power that is determined based on the power-ramping counter for the random-access procedure.

8 . The wireless device of claim 7 , wherein the instructions further cause the wireless device at least to perform incrementing a preamble transmission counter.

9 . The wireless device of claim 8 , wherein incrementing the preamble transmission counter is based on the wireless device not receiving a random-access response corresponding to the first preamble.

10 . The wireless device of claim 9 , wherein incrementing the preamble transmission counter is further based on not receiving the random-access response corresponding to the first preamble within a time window.

11 . The wireless device of claim 10 , wherein the time window is a random-access response window.

12 . The wireless device of claim 7 , wherein the instructions further cause the wireless device at least to perform incrementing the power-ramping counter based on transmitting at least one repetition of a second plurality of repetitions of a third preamble of the random-access procedure.

13 . The wireless device of claim 12 , wherein the instructions further cause the wireless device at least to perform transmitting a fourth preamble with a transmit power based on the power-ramping counter.

14 . The wireless device of claim 13 , wherein the transmit power of the fourth preamble is based on the incrementing the power-ramping counter.

15 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a device, cause the device to perform a process, the process comprising:

determining, by a wireless device, a first plurality of repetitions of a first preamble scheduled for transmission for a random-access procedure;

suspending, by the wireless device, a power-ramping counter of the random-access procedure based on not transmitting each repetition of the first plurality of repetitions of the first preamble of the random-access procedure; and

transmitting, by the wireless device, a second preamble with a transmit power that is determined based on the power-ramping counter for the random-access procedure.

16 . The non-transitory computer-readable medium of claim 15 , the process further comprising receiving, by the wireless device, one or more configuration parameters.

17 . The non-transitory computer-readable medium of claim 15 , the process further comprising:

receiving, by the wireless device, one or more configuration parameters, wherein the one or more configuration parameters indicate one or more reference signals; and

determining the first plurality of repetitions based on a radio link quality of a reference signal of the one or more reference signals.

18 . The non-transitory computer-readable medium of claim 15 , the process further comprising incrementing a preamble transmission counter, wherein incrementing the preamble transmission counter is based on the wireless device not receiving a random-access response corresponding to the first preamble.

19 . The non-transitory computer-readable medium of claim 15 , the process further comprising incrementing a preamble transmission counter, wherein incrementing the preamble transmission counter is based on the wireless device not receiving a random-access response corresponding to the first preamble within a random-access response window.

20 . The non-transitory computer-readable medium of claim 15 , the process further comprising:

incrementing the power-ramping counter based on transmitting at least one repetition of a second plurality of repetitions of a third preamble of the random-access procedure; and

transmitting a fourth preamble with a transmit power based on the power-ramping counter, wherein the transmit power of the fourth preamble is based on the incrementing the power-ramping counter.