HARQ process identifier offset for periodic resource allocation

1. A method comprising:

receiving, by a wireless device, a radio resource control message comprising uplink periodic resource allocation configuration parameters indicating:

a hybrid automatic repeat request (HARQ) process identifier offset; and

a number of uplink periodic resource allocation HARQ processes;

determining a HARQ process identifier for a current transmission time interval as a sum of the HARQ process identifier offset and a value determined based on:

the current transmission time interval; and

the number of uplink periodic resource allocation HARQ processes; and

transmitting a transport block associated with a HARQ process identified by the HARQ process identifier.

2. The method of claim 1 , wherein the uplink periodic resource allocation configuration parameters further indicate:

a periodic resource allocation configuration index; and

a radio network temporary identifier.

3. The method of claim 2 , further comprising receiving a downlink control information, associated with the radio network temporary identifier and the periodic resource allocation configuration index, indicating activation of periodic resource allocation resources.

4. The method of claim 3 , further comprising validating the downlink control information as a valid downlink control information for activation of the periodic resource allocation resources.

5. The method of claim 1 , wherein:

the uplink periodic resource allocation configuration parameters further indicate a periodicity parameter; and

the value is determined further based on the periodicity parameter.

6. The method of claim 1 , wherein the radio resource control message further comprises second uplink periodic resource allocation configuration parameters indicating:

a second HARQ process identifier offset; and

a second number of periodic resource allocation HARQ processes.

7. The method of claim 6 , wherein the radio resource control message further indicates a second periodic resource allocation configuration index.

8. The method of claim 1 , wherein the current transmission time interval is a first transmission time interval in a plurality of transmission time intervals for transmission of a plurality of transport blocks.

9. The method of claim 8 , wherein the uplink periodic resource allocation configuration parameters indicate transmission parameters of the plurality of transport blocks.

10. The method of claim 8 , wherein the uplink periodic resource allocation configuration parameters indicate a number of the plurality of transport blocks.

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:

receive a radio resource control message comprising uplink periodic resource allocation configuration parameters indicating:

a hybrid automatic repeat request (HARQ) process identifier offset; and

a number of uplink periodic resource allocation HARQ processes;

determine a HARQ process identifier for a current transmission time interval as a sum of the HARQ process identifier offset and a value determined based on:

the current transmission time interval; and

the number of uplink periodic resource allocation HARQ processes; and

transmitting a transport block associated with a HARQ process identified by the HARQ process identifier.

12. The wireless device of claim 11 , wherein the uplink periodic resource allocation configuration parameters further indicate:

a periodic resource allocation configuration index; and

a radio network temporary identifier.

13. The wireless device of claim 12 , wherein the instructions, when executed, further cause the wireless device to receive a downlink control information, associated with the radio network temporary identifier and the periodic resource allocation configuration index, indicating activation of periodic resource allocation resources.

14. The wireless device of claim 13 , wherein the instructions, when executed, further cause the wireless device to validate the downlink control information as a valid downlink control information for activation of the periodic resource allocation resources.

15. The wireless device of claim 11 , wherein:

the uplink periodic resource allocation configuration parameters further indicate a periodicity parameter; and

the value is determined further based on the periodicity parameter.

16. The wireless device of claim 11 , wherein the radio resource control message further comprises second uplink periodic resource allocation configuration parameters indicating:

a second HARQ process identifier offset; and

a second number of periodic resource allocation HARQ processes.

17. The wireless device of claim 16 , wherein the radio resource control message further indicates a second periodic resource allocation configuration index.

18. The wireless device of claim 11 , wherein the current transmission time interval is a first transmission time interval in a plurality of transmission time intervals for transmission of a plurality of transport blocks.

19. The wireless device of claim 18 , wherein the uplink periodic resource allocation configuration parameters indicate transmission parameters of the plurality of transport blocks.

20. The wireless device of claim 18 , wherein the uplink periodic resource allocation configuration parameters indicate a number of the plurality of transport blocks.