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1. (WO2019048702) FAST TRANSMISSION OF SCHEDULING REQUEST
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CLAIMS

What is claimed is:

1. A method implemented by a user equipment (30, 200) for transmitting data on an uplink shared channel, said method comprising:

determining, responsive to the arrival of new transmit data for transmission on an uplink shared channel, that a scheduling request to request uplink resources for transmission of the new transmit data will overlap a scheduled data transmission;

preempting the scheduled data transmission to transmit the scheduling request; and transmitting the scheduling request to request uplink resources for the new transmit data.

The method of claim 1 wherein preempting the scheduled data transmission to transmit scheduling request comprises:

determining that one or more predetermined criteria is satisfied; and

preempting the scheduled data transmission responsive to determining that the one or more predetermined criteria is satisfied.

3. The method of claim 2 wherein preempting the scheduled data transmission to transmit the scheduling request comprises preempting the scheduled data transmission responsive to determining that the new transmit data has higher priority than the scheduled uplink transmission.

4. The method of claim 2 wherein preempting the scheduled data transmission to transmit the scheduling request comprises preempting the scheduled data transmission responsive to determining that a periodicity of a scheduling request interval meets a threshold requirement.

5. The method of claim 2 wherein preempting the scheduled data transmission to transmit the scheduling request comprises preempting the scheduled data transmission responsive to determining that:

a periodicity of the scheduling request interval is less than a threshold; and

a remaining duration of the scheduled transmission is less than a predetermined time limit.

6. The method of claim 2 wherein preempting the scheduled data transmission to transmit the scheduling request comprises preempting the scheduled data transmission responsive to determining that a remaining duration of the scheduled transmission is less than a

predetermined time limit.

7. The method of any one of claims 1 - 6 wherein preempting the scheduled data transmission to transmit the scheduling request comprises preempting the scheduled data transmission responsive to determining, based on configuration data, that preemption is allowed.

8. The method of claim 1 wherein preempting the scheduled data transmission to transmit the scheduling request comprises preempting the scheduled data transmission depending on a priority of the new transmit data.

9. The method of claim 8 wherein preempting the scheduled data transmission depending on a priority of the data comprises preempting the scheduled data transmission responsive to determining the new transmit data has higher priority than the scheduled uplink transmission.

10. The method of claim 1 wherein preempting the scheduled data transmission to transmit the scheduling request comprises preempting the scheduled data transmission depending on a periodicity of a scheduling request interval.

1 1 . The method of claim 10 wherein preempting the scheduled data transmission depending on a periodicity of a scheduling request interval comprises preempting the scheduled data transmission responsive to determining that the periodicity of the scheduling request interval meets a threshold requirement.

12. The method of claim 10 wherein preempting the scheduled data transmission depending on a periodicity of a scheduling request interval comprises preempting the scheduled data transmission responsive to determining that:

the periodicity of the scheduling request interval is less than a first threshold; and a remaining duration of the scheduled transmission is less than a predetermined time limit.

13. The method of any one of claims 1 - 12 wherein preempting the scheduled data transmission to transmit the scheduling request comprises reducing the transmit power allocated for the scheduled transmission.

14. The method of any claim 13 wherein reducing the transmit power allocated for the scheduled transmission comprises reducing a number of resource elements allocated for the scheduled transmission while maintaining a power per resource element for the scheduled transmission.

15. The method of any claim 14 wherein transmitting the scheduling request to request uplink resources for the new transmit data comprises transmitting the scheduling request on the preempted resource elements no longer used for the scheduled uplink transmission.

16. The method of any one of claims 1 - 12 wherein preempting the scheduled data transmission to transmit the scheduling request comprises reducing a number of resource elements allocated for the scheduled transmission.

17. The method of any claim 16 wherein transmitting the scheduling request to request uplink resources for the new transmit data comprises transmitting the scheduling request on resource elements no longer used for the scheduled uplink transmission.

18. A user equipment (30, 200) configured to transmit data on an uplink shared channel, said user equipment (30, 200) comprising:

an interface circuit (210) configured to communicate over a wireless communication channel with a base station (20, 400); and

a processing circuit (230) configured to:

determine, responsive to the arrival of new transmit data for transmission on an uplink shared channel, that a scheduling request to request uplink resources for transmission of the new transmit data will overlap a scheduled data transmission;

preempt the scheduled data transmission to transmit the scheduling request; and transmit the scheduling request to request uplink resources for the new transmit data.

19. The user equipment (30, 200) of claim 18 wherein the processing circuit (230) is further configured to:

determine that one or more predetermined criteria is satisfied; and

preempt the scheduled data transmission responsive to determining that the one or more predetermined criteria is satisfied.

20. The user equipment (30, 200) of claim 19 wherein the processing circuit (230) is further configured to preempt the scheduled data transmission responsive to determining that the new transmit data has higher priority than the scheduled uplink transmission.

21 . The user equipment (30, 200) of claim 19 wherein the processing circuit (230) is further configured to preempt the scheduled data transmission responsive to determining that a periodicity of a scheduling request interval meets a threshold requirement.

22. The user equipment (30, 200) of claim 19 wherein the processing circuit (230) is further configured to preempt the scheduled data transmission responsive to determining that:

a periodicity of the scheduling request interval is less than a threshold; and

a remaining duration of the scheduled transmission is less than a predetermined time limit.

23. The user equipment (30, 200) of claim 19 wherein the processing circuit (230) is further configured to preempt the scheduled data transmission responsive to determining that a remaining duration of the scheduled transmission is less than a predetermined time limit.

24. The user equipment (30, 200) of any one of claims 18 - 23 wherein the processing circuit (230) is further configured to preempt the scheduled data transmission in response to determining, based on configuration data, that preemption is allowed.

25. The user equipment (30, 200) of claim 18 wherein the processing circuit (230) is further configured to preempt the scheduled data transmission depending on a priority of the new transmit data.

26. The user equipment (30, 200) of claim 25 wherein the processing circuit (230) is further configured to preempt the scheduled data transmission responsive to determining the new transmit data has higher priority than the scheduled uplink transmission.

27. The user equipment (30, 200) of claim 18 wherein the processing circuit is further configured to preempt the scheduled data transmission depending on a periodicity of a scheduling request interval.

28. The user equipment (30, 200) of claim 27 wherein the processing circuit is further configured to preempt the scheduled data transmission responsive to determining that the periodicity of the scheduling request interval meets a threshold requirement.

29. The user equipment (30, 200) of claim 27 wherein the processing circuit (230) is further configured to preempt the scheduled data transmission responsive to determining that:

the periodicity of the scheduling request interval is less than a first threshold; and a remaining duration of the scheduled transmission is less than a predetermined time limit.

30. The user equipment (30, 200) of any one of claims 18 - 29 wherein the processing circuit (230) is further configured to reduce the transmit power allocated for the scheduled data transmission to preempt the scheduled data transmission.

31 . The user equipment (30, 200) of claim 30 wherein the processing circuit (230) is further configured to reduce a number of resource elements allocated for the scheduled transmission while maintaining a power per resource element for the scheduled transmission.

32. The user equipment (30, 200) of claim 31 wherein the processing circuit (230) is further configured to transmit the scheduling request on resource elements no longer used for the scheduled uplink transmission.

33. The user equipment (30, 200) of any one of claims 18 - 29 wherein the processing circuit (230) is further configured to preempt reduce a number of resource elements allocated for the scheduled data transmission to preempt the scheduled data transmission.

34. The user equipment (30, 200) of claim 33 wherein the processing circuit (230) is further configured to transmit the scheduling request on resource elements no longer used for the scheduled uplink transmission.

35. A user equipment (30, 200) in a wireless communication network configured to:

determine, responsive to the arrival of new transmit data for transmission on an uplink shared channel, that a scheduling request to request uplink resources for transmission of the new transmit data will overlap a scheduled data transmission;

preempt the scheduled data transmission to transmit the scheduling request; and transmit the scheduling request to request uplink resources for the new transmit data.

36. The user equipment (30, 200) of claim 35 configured to perform any one of the methods of claims 2 - 17.

37. A computer program (255) comprising executable instructions that, when executed by a processing circuit in a user equipment (30, 200) in a wireless communication network, causes the user equipment (30, 200) to perform any one of the methods of claims 1 -17.

38. A carrier containing a computer program (255) of claim 37, wherein the carrier is one of an electronic signal, optical signal, radio signal, or computer readable storage medium.

39. A non-transitory computer-readable storage medium (250) containing a computer program (255) comprising executable instructions that, when executed by a processing circuit in a user equipment (30, 200) in a wireless communication network causes the user equipment (30, 200) to perform any one of the methods of claims 1-17.

40. A method (300) implemented by a base station (20, 400) in a wireless communication network for receiving data transmitted by on an uplink shared channel by a user equipment (30,

200), said method comprising:

receiving, from the user equipment (30, 200), a data transmission on an uplink shared channel; and

blindly detecting a pre-emptive scheduling request from the user equipment (30, 200) on resources allocated for the data transmission.

41 . The method (300) of claim 40 further comprising decoding the data transmission based on the detection of the pre-emptive scheduling request.

42. The method (300) of claim 41 wherein decoding the data transmission based on the detection of the pre-emptive scheduling request comprises setting symbols corresponding to resources on which the pre-emptive SR was received to zero.

45. The method (300) of any one of claims 41-42 wherein blindly detecting the pre-emptive scheduling request is performed prior to decoding the data transmission in the shared uplink channel.

43. The method (300) of any one of claims 40 - 43 wherein blindly detecting the pre-emptive scheduling request comprises correlating a received signal corresponding to a scheduling request transmission opportunity with a known signal.

44. The method (300) of any one of claims 40 - 43 wherein blindly detecting the pre-emptive scheduling request comprises decoding a received signal corresponding to a scheduling request transmission opportunity with a known signal and performing error detection on the decoded signal.

45. The method (300) of any one of claims 40 - 44 further comprising transmitting, responsive to the scheduling request, an uplink grant to the user equipment (30, 200).

46. A base station (20, 400) configured to receive data on an uplink shared channel form a user equipment (30, 200), the base station (20, 400) comprising:

an interface circuit (410) configured to communicate over a wireless communication channel with the user equipment (30, 200); and

a processing circuit (430) configured to:

receive, from the user equipment (30, 200), a data transmission on an uplink shared channel; and

blindly detect a pre-emptive scheduling request from the user equipment (30, 200) on resources allocated for the data transmission.

47. A base station (20, 400) in a wireless communication network configured to:

receive, from the user equipment (30, 200), a data transmission on an uplink shared channel; and

blindly detect a pre-emptive scheduling request from the user equipment (30, 200) on resources allocated for the data transmission.

48. The user equipment (30, 200) of claim 47 configured to perform any one of the methods of claims 41-45.

49. A computer program (455) comprising executable instructions that, when executed by a processing circuit in a base station (20, 400), causes the base station (20, 400) to perform any one of the methods of claims 40-45.

50. A carrier containing a computer program (455) of claim 49, wherein the carrier is one of an electronic signal, optical signal, radio signal, or computer readable storage medium.

51 . A non-transitory computer-readable storage medium (450) containing a computer program (455) comprising executable instructions that, when executed by a processing circuit in a base station (20, 400) causes the base station (20, 400) to perform any one of the methods of claims 40-45.