Delay timer for data transmission in inactive state

1. 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 system information block (SIB) comprising a value of a scheduling request (SR) delay timer;

receive, in a radio resource control (RRC) connected state, an RRC message comprising a parameter indicating the SR delay timer is applied to a logical channel;

initiate a small data transmission (SDT) procedure in an RRC inactive state, wherein at least one radio bearer, associated with the logical channel, is configured for the SDT procedure; and

in response to triggering, during the SDT procedure, buffer status reporting (BSR) for the logical channel, start the SR delay timer based on:

the parameter indicating the SR delay timer is applied to the logical channel; and

the value of the SIB.

2. The wireless device of claim 1 , wherein the instructions further cause the wireless device to stop, during the SDT procedure, the SR delay timer after the starting the SR delay timer.

3. The wireless device of claim 1 , wherein the instructions further cause the wireless device to initiate, based on the SR delay timer not running during the SDT procedure, a random access procedure.

4. The wireless device of claim 3 , wherein the instructions further cause the wireless device to:

trigger an SR during the SDT procedure in response to triggering the BSR; and

determine no uplink resource is configured for the SR, wherein initiating the random access procedure is further in response to determining no uplink resource is configured for the SR.

5. The wireless device of claim 1 , wherein the instructions further cause the wireless device to receive the SIB in the RRC inactive state.

6. The wireless device of claim 1 , wherein initiating the SDT procedure is based on:

a measured reference signal received power value being higher than a power threshold value; and

data volume corresponding to data in a buffer being smaller than or equal to a data volume threshold value.

7. The wireless device of claim 1 , wherein the instructions further cause the wireless device to receive an RRC release message comprising configuration parameters of the SDT procedure.

8. A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to:

transmit, to a wireless device, a system information block (SIB) comprising a value of a scheduling request (SR) delay timer;

transmit, to the wireless device in a radio resource control (RRC) connected state, an RRC message comprising a parameter indicating the SR delay timer is applied to a logical channel;

receive, from the wireless device in an RRC inactive state, a message indicating to initiate a small data transmission (SDT) procedure of the wireless device in the RRC inactive state, wherein at least one radio bearer, associated with the logical channel, is configured for the SDT procedure; and

receive, from the wireless device in the RRC inactive state, a preamble, wherein the preamble is in response to:

the SR delay timer being applied to the logical channel for the SDT procedure; and

an SR triggered, during the SDT procedure, based on the value of the delay timer.

9. The base station of claim 8 , wherein the SR initiates a random access procedure of the preamble during the SDT procedure.

10. The base station of claim 9 , wherein the SR that initiates the random access procedure is based on transmitting an RRC release message comprising no uplink resource configured for the SR.

11. The base station of claim 8 , wherein the instructions further cause the base station to transmit an RRC release message comprising configuration parameters of the SDT procedure.

12. The base station of claim 11 , wherein the configuration parameters indicate that the SR delay timer is applied to the logical channel configured for the SDT procedure.

13. The base station of claim 8 , wherein the SR is triggered for data from the logical channel.

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

receive a system information block (SIB) comprising a value of a scheduling request (SR) delay timer;

receive, in a radio resource control (RRC) connected state, an RRC message comprising a parameter indicating the SR delay timer is applied to a logical channel;

initiate a small data transmission (SDT) procedure in an RRC inactive state, wherein at least one radio bearer, associated with the logical channel, is configured for the SDT procedure; and

in response to triggering, during the SDT procedure, buffer status reporting (BSR) for the logical channel, start the SR delay timer based on:

the parameter indicating the SR delay timer is applied to the logical channel; and

the value of the SIB.

15. The non-transitory computer-readable medium of claim 14 , wherein the instructions further cause the wireless device to stop, during the SDT procedure, the SR delay timer after the starting the SR delay timer.

16. The non-transitory computer-readable medium of claim 14 , wherein the instructions further cause the wireless device to initiate, based on the SR delay timer not running during the SDT procedure, a random access procedure.

17. The non-transitory computer-readable medium of claim 16 , wherein the instructions further cause the wireless device to:

trigger an SR during the SDT procedure in response to triggering the BSR; and

determine no uplink resource is configured for the SR, wherein initiating the random access procedure is further in response to determining no uplink resource is configured for the SR.

18. The non-transitory computer-readable medium of claim 14 , wherein the instructions further cause the wireless device to receive the SIB in the RRC inactive state.

19. The non-transitory computer-readable medium of claim 14 , wherein initiating the SDT procedure is based on:

a measured reference signal received power value being higher than a power threshold value; and

data volume corresponding to data in a buffer being smaller than or equal to a data volume threshold value.

20. The non-transitory computer-readable medium of claim 14 , wherein the instructions further cause the wireless device to receive an RRC release message comprising configuration parameters of the SDT procedure.