Access procedures in wireless communications

1. A method comprising:

sending, by a wireless device and as part of a random access procedure, a first transmission comprising:

a preamble; and

a transport block associated with a first redundancy version; and

based on a determination that the random access procedure is incomplete, resending the transport block associated with the first redundancy version.

2. The method of claim 1 further comprising:

receiving, by the wireless device from a base station, one or more configuration parameters, wherein the one or more configuration parameters comprise a redundancy version sequence.

3. The method of claim 2 , further comprising:

resending the transport block associated with a second redundancy version from the redundancy version sequence.

4. The method of claim 2 , wherein the one or more configuration parameters indicate:

one or more physical random access channel (PRACH) resources;

one or more uplink resources; and

one or more mappings between the one or more PRACH resources and the one or more uplink resources.

5. The method of claim 1 , further comprising:

sending, as part of a two-step random access procedure, a random access preamble with the transport block associated with the first redundancy version.

6. The method of claim 5 , further comprising:

resending, by the wireless device and based on a determination that a second random access response corresponding to a random access preamble has not been received, the random access preamble.

7. The method of claim 1 , wherein the first redundancy version is equal to zero.

8. The method of claim 1 , further comprising:

receiving a second random access response corresponding to a random access preamble, wherein the second random access response comprises an uplink grant indicating an uplink resource; and

resending the transport block via the uplink resource indicated by the uplink grant in the second random access response.

9. The method of claim 1 , further comprising:

sending, by the wireless device and as part of a second random access procedure, a second transmission comprising a second preamble; and

sending, as part of the second random access procedure, a third transmission, wherein the third transmission comprises the transport block associated with a second redundancy version.

10. The method of claim 1 , wherein the random access procedure comprises a contention-free random access procedure.

11. The method of claim 1 , wherein the random access procedure comprises a contention-based random access procedure.

12. The method of claim 1 , wherein the determination that the random access procedure is incomplete is based on a determination that a random access response associated with the transport block has not been received.

13. The method of claim 12 , wherein the determination that the random access response associated with the transport block has not been received is based on not having received the random access response during a response window.

14. The method of claim 1 , wherein the determination that the random access procedure is incomplete is based on an expiration of a timer.

15. A method comprising:

receiving, by a wireless device, one or more messages comprising one or more configuration parameters for a cell, wherein the one or more configuration parameters indicate a redundancy version sequence;

starting a random access procedure for the cell;

sending a transport block associated with a first redundancy version of the redundancy version sequence; and

based on a determination that the random access procedure is incomplete, resending the transport block associated with a second redundancy version of the redundancy version sequence.

16. The method of claim 15 , wherein:

the random access procedure comprises a two-step random access procedure; and

sending the transport block comprises sending a random access preamble with the transport block associated with the first redundancy version.

17. The method of claim 16 , further comprising:

resending, by the wireless device and based on a determination that a second random access response corresponding to the random access preamble has not been received, the random access preamble.

18. The method of claim 15 , further comprising:

determining, based on a random access resource selection procedure, the random access procedure for the cell.

19. The method of claim 15 , wherein the one or more configuration parameters indicate:

one or more physical random access channel (PRACH) resources;

one or more uplink resources; and

one or more mappings between the one or more PRACH resources and the one or more uplink resources.

20. The method of claim 15 , wherein the first redundancy version and the second redundancy version are equal.

21. The method of claim 15 , wherein the determination that the random access procedure is incomplete is based on a determination that a random access response associated with the transport block has not been received.

22. The method of claim 21 , wherein the determination that the random access response associated with the transport block has not been received is based on not having received the random access response during a response window.

23. The method of claim 15 , wherein the determination that the random access procedure is incomplete is based on an expiration of a timer.

24. A method comprising:

receiving, by a wireless device, one or more messages comprising one or more configuration parameters, wherein the one or more configuration parameters indicate a redundancy version sequence;

sending a transport block associated with a first redundancy version of the redundancy version sequence; and

based on a determination that a random access procedure is incomplete, resending the transport block associated with the first redundancy version.

25. The method of claim 24 , wherein sending the transport block comprises:

sending, as part of a two-step random access procedure, a random access preamble with the transport block associated with the first redundancy version.

26. The method of claim 24 , further comprising:

receiving a second random access response corresponding to a random access preamble, wherein the second random access response is associated with a second redundancy version; and

resending the transport block associated with the second redundancy version.

27. The method of claim 24 , wherein the determination that the random access procedure is incomplete is based on a determination that a random access response associated with the transport block has not been received.

28. The method of claim 27 , wherein the determination that the random access response associated with the transport block has not been received is based on not having received the random access response during a response window.

29. The method of claim 24 , wherein the determination that the random access procedure is incomplete is based on an expiration of a timer.