Resource management, access control and mobility for grant-free uplink transmission

1. A method for wireless communication at a user equipment (UE), comprising:

receiving a connection release message, the connection release message including a resource indicator indicating that a set of resources are to be used for grant-free uplink transmissions by the UE while operating in a disconnected state;

transitioning from a connected state to a disconnected state based at least in part on the connection release message;

performing, while operating in the disconnected state, the grant-free uplink transmissions using the set of resources, wherein the set of resources are released upon one or more conditions satisfying a threshold; and

determining that the set of resource are unused for a threshold number of transmission occasions, wherein the conditions satisfying the threshold comprises at least the set of resources being considered to have been released by the base station based at least in part on the determining.

2. The method of claim 1 , further comprising:

determining that the resource indicator in the connection release message indicates information associated with the set of resources.

3. The method of claim 2 , further comprising:

releasing, based at least in part on the determining, the set of resources to use for grant-free uplink transmissions while operating in the disconnected state.

4. The method of claim 1 , further comprising:

determining that the resource indicator in the connection release message implicitly indicates information associated with the set of resources.

5. The method of claim 4 , further comprising:

releasing, based at least in part on the determining, the set of resources to use for grant-free uplink transmissions while operating in the disconnected state.

6. The method of claim 1 , further comprising:

determining that the set of resource are unused for a time period, wherein the set of resources are considered to have been released by the base station based at least in part on the determining.

7. The method of claim 6 , further comprising:

receiving a signal from the base station configuring the time period.

8. The method of claim 1 , further comprising:

receiving a signal from the base station configuring the threshold number of transmission occasions.

9. The method of claim 1 , further comprising:

receiving a release message from the base station de-configuring the set of resources.

10. The method of claim 1 , further comprising:

determining that a clock drift level has degraded below a threshold level, wherein the set of resources are considered to have been released by the base station based at least in part on the determining.

11. The method of claim 1 , further comprising:

determining that no acknowledgement for the grant-free uplink transmission was receive from the base station, wherein the set of resources are considered to have been released by the base station based at least in part on the determining.

12. The method of claim 1 , further comprising:

determining that the UE has no data for transmission in the grant-free uplink transmission; and

transmitting, based at least in part on the UE having no data for transmission, a dummy payload as the grant-free uplink transmission to preserve the set of resources.

13. A method for wireless communication at a base station, comprising:

configuring a set of resources for a user equipment (UE) to use for grant-free uplink transmissions while the UE is operating in a disconnected state;

transmitting a connection release message that includes a resource indicator to the UE, the resource indicator indicating the set of resources configured for the UE, the connection release message transitioning the UE from a connected state to the disconnected state;

receiving, while the UE is operating in the disconnected state, the grant-free uplink transmissions from the UE using the set of resources configured for the UE, wherein the set of resources are released upon one or more conditions satisfying a threshold; and

determining that the set of resource are unused for a threshold number of transmission occasions, wherein the conditions satisfying the threshold comprise at least the set of resources being considered to have been released based at least in part on the determining.

14. The method of claim 13 , further comprising:

configuring the resource indicator in the connection release message to implicitly indicate information associated with the set of resources.

15. The method of claim 14 , further comprising:

releasing, based at least in part on the configuring, the set of resources.

16. The method of claim 13 , further comprising:

configuring the resource indicator in the connection release message to indicate information associated with the set of resources.

17. The method of claim 16 , further comprising:

releasing, based at least in part on the configuring, the set of resources.

18. The method of claim 14 , further comprising:

determining that the set of resource are unused for a time period; and

releasing the set of resources based at least in part on the determining.

19. The method of claim 18 , further comprising:

transmitting a signal to the UE configuring the time period.

20. The method of claim 13 , further comprising:

transmitting a signal to the UE configuring the threshold number of transmission occasions.

21. The method of claim 13 , further comprising:

transmitting a release message to the UE de-configuring the set of resources.

22. The method of claim 21 , further comprising:

determining that the UE is associated with a defined access class, wherein the release message is transmitted based at least in part on the determining.

23. The method of claim 22 , wherein the defined access class comprises an grant-free uplink resource configured access class.

24. The method of claim 21 , further comprising:

determining that the UE has transitioned from the disconnected state to the connected state, wherein the release message is transmitted based at least in part on the determining.

25. The method of claim 21 , further comprising:

determining that a paging message is to be transmitted to the UE, wherein the release message is transmitted based at least in part on the determining and the paging message comprises the release message.

26. The method of claim 25 , wherein the paging message comprises a resource release cause.

27. An apparatus for wireless communication at a user equipment (UE), comprising: a processor, memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the UE to:

receive a connection release message, the connection release message including a resource indicator indicating that a set of resources are to be used for grant-free uplink transmissions by the UE while operating in a disconnected state;

transition from a connected state to a disconnected state based at least in part on the connection release message;

perform, while operating in the disconnected state, the grant-free uplink transmissions using the set of resources, wherein the set of resources are released upon one or more conditions satisfying a threshold; and

determine that the set of resource are unused for a threshold number of transmission occasions, wherein the conditions satisfying the threshold comprises at least the set of resources being considered to have been released by the base station based at least in part on the determining.

28. The apparatus of claim 27 , wherein the instructions are further executable by the processor to cause the UE to:

determine that the resource indicator in the connection release message indicates information associated with the set of resources.

29. The apparatus of claim 28 , wherein the instructions are further executable by the processor to cause the UE to:

release, based at least in part on the determining, the set of resources to use for grant-free uplink transmissions while operating in the disconnected state.

30. The apparatus of claim 27 , wherein the instructions are further executable by the processor to cause the UE to:

determine that the resource indicator in the connection release message implicitly indicates information associated with the set of resources.

31. The apparatus of claim 30 , wherein the instructions are further executable by the processor to cause the UE to:

release, based at least in part on the determining, the set of resources to use for grant-free uplink transmissions while operating in the disconnected state.

32. The apparatus of claim 27 , wherein the instructions are further executable by the processor to cause the UE to:

determine that the set of resource are unused for a time period, wherein the set of resources are considered to have been released by the base station based at least in part on the determining.

33. The method of claim 32 , wherein the instructions are further executable by the processor to cause the UE to:

receive a signal from the base station configuring the time period.

34. The method of claim 27 , wherein the instructions are further executable by the processor to cause the UE to:

receive a signal from the base station configuring the threshold number of transmission occasions.

35. The apparatus of claim 27 , wherein the instructions are further executable by the processor to cause the UE to:

receive a release message from the base station de-configuring the set of resources.

36. The apparatus of claim 27 , wherein the instructions are further executable by the processor to cause the UE to:

determine that a clock drift level has degraded below a threshold level, wherein the set of resources are considered to have been released by the base station based at least in part on the determining.

37. The apparatus of claim 27 , wherein the instructions are further executable by the processor to cause the UE to:

determine that no acknowledgement for the grant-free uplink transmission was receive from the base station, wherein the set of resources are considered to have been released by the base station based at least in part on the determining.

38. The apparatus of claim 27 , wherein the instructions are further executable by the processor to cause the UE to:

determine that the UE has no data for transmission in the grant-free uplink transmission; and

transmit, based at least in part on the UE having no data for transmission, a dummy payload as the grant-free uplink transmission to preserve the set of resources.

39. An apparatus for wireless communication at a base station, comprising: a processor, memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the base station to:

configure a set of resources for a user equipment (UE) to use for grant-free uplink transmissions while the UE is operating in a disconnected state;

transmit a connection release message that includes a resource indicator to the UE, the resource indicator indicating the set of resources configured for the UE, the connection release message transitioning the UE from a connected state to the disconnected state;

receive, while the UE is operating in the disconnected state, the grant-free uplink transmissions from the UE using the set of resources configured for the UE, wherein the set of resources are released upon one or more conditions satisfying a threshold; and

determine that the set of resource are unused for a threshold number of transmission occasions, wherein the conditions satisfying the threshold comprise at least the set of resources being considered to have been released based at least in part on the determining.

40. The apparatus of claim 39 , wherein the instructions are further executable by the processor to cause the base station to:

configure the resource indicator in the connection release message to implicitly indicate information associated with the set of resources.

41. The apparatus of claim 40 , wherein the instructions are further executable by the processor to cause the base station to:

release, based at least in part on the configuring, the set of resources.

42. The apparatus of claim 39 , wherein the instructions are further executable by the processor to cause the base station to:

configure the resource indicator in the connection release message to indicate information associated with the set of resources.

43. The apparatus of claim 42 , wherein the instructions are further executable by the processor to cause the base station to:

release, based at least in part on the configuring, the set of resources.

44. The apparatus of claim 39 , wherein the instructions are further executable by the processor to cause the base station to:

determine that the set of resource are unused for a time period; and

release the set of resources based at least in part on the determining.

45. The method of claim 44 , wherein the instructions are further executable by the processor to cause the base station to:

transmit a signal to the UE configuring the time period.

46. The method of claim 39 , wherein the instructions are further executable by the processor to cause the base station to:

transmit a signal to the UE configuring the threshold number of transmission occasions.

47. The apparatus of claim 39 , wherein the instructions are further executable by the processor to cause the base station to:

transmit a release message to the UE de-configuring the set of resources.

48. The apparatus of claim 47 , wherein the instructions are further executable by the processor to cause the base station to:

determine that the UE is associated with a defined access class, wherein the release message is transmitted based at least in part on the determining.

49. The apparatus of claim 48 , wherein the defined access class comprises an grant-free uplink resource configured access class.

50. The apparatus of claim 47 , wherein the instructions are further executable by the processor to cause the base station to:

determine that the UE has transitioned from the disconnected state to the connected state, wherein the release message is transmitted based at least in part on the determining.

51. The apparatus of claim 47 , wherein the instructions are further executable by the processor to cause the base station to:

determine that a paging message is to be transmitted to the UE, wherein the release message is transmitted based at least in part on the determining and the paging message comprises the release message.

52. The apparatus of claim 51 , wherein the paging message comprises a resource release cause.

53. An apparatus for wireless communication at a user equipment (UE), comprising:

means for receiving a connection release message, the connection release message including a resource indicator indicating that a set of resources are to be used for grant-free uplink transmissions by the UE while operating in a disconnected state;

means for transitioning from a connected state to a disconnected state based at least in part on the connection release message;

means for performing, while operating in the disconnected state, the grant-free uplink transmissions using the set of resources, wherein the set of resources are released upon one or more conditions satisfying a threshold; and

means for determining that the set of resource are unused for a threshold number of transmission occasions, wherein the conditions satisfying the threshold comprises at least the set of resources being considered to have been released by the base station based at least in part on the determining.

54. An apparatus for wireless communication at a base station, comprising:

means for configuring a set of resources for a user equipment (UE) to use for grant-free uplink transmissions while the UE is operating in a disconnected state;

means for transmitting a connection release message that includes a resource indicator to the UE, the resource indicator indicating the set of resources configured for the UE, the connection release message transitioning the UE from a connected state to the disconnected state;

means for receiving, while the UE is operating in the disconnected state, the grant-free uplink transmissions from the UE using the set of resources configured for the UE, wherein the set of resources are released upon one or more conditions satisfying a threshold; and

means for determining that the set of resource are unused for a threshold number of transmission occasions, wherein the conditions satisfying the threshold comprise at least the set of resources being considered to have been released based at least in part on the determining.

55. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to:

receive a connection release message, the connection release message including a resource indicator indicating that a set of resources are to be used for grant-free uplink transmissions by the UE while operating in a disconnected state;

transition from a connected state to a disconnected state based at least in part on the connection release message;

perform, while operating in the disconnected state, the grant-free uplink transmissions using the set of resources, wherein the set of resources are released upon one or more conditions satisfying a threshold; and

determine that the set of resource are unused for a threshold number of transmission occasions, wherein the conditions satisfying the threshold comprise at least the set of resources being considered to have been released based at least in part on the determining.

56. A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to:

configure a set of resources for a user equipment (UE) to use for grant-free uplink transmissions while the UE is operating in a disconnected state;

transmit a connection release message that includes a resource indicator to the UE, the resource indicator indicating the set of resources configured for the UE, the connection release message transitioning the UE from a connected state to the disconnected state;

receive, while the UE is operating in the disconnected state, the grant-free uplink transmissions from the UE using the set of resources configured for the UE, wherein the set of resources are released upon one or more conditions satisfying a threshold; and

determine that the set of resource are unused for a threshold number of transmission occasions, wherein the conditions satisfying the threshold comprise at least the set of resources being considered to have been released based at least in part on the determining.