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1. (WO2018063064) METHODS, NETWORK NODE AND WIRELESS DEVICE FOR DISCONTINUOUS TRANSMISSION
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CLAIMS:

1 . A method performed by a network node (200) for handling discontinuous transmission, DTX, in a communication with a wireless device (202) using multiple uplink carriers, the method comprising:

- configuring (2: 1 , 300) or obtaining a primary uplink carrier with a first

Transmission Time Interval, TTI, for the communication,

- configuring (2:2, 302) or obtaining a secondary uplink carrier with a second TTI which is different than the first TTI for the communication,

- selecting (2:4, 306) values of DTX parameters defined for one of the first and second TTIs for the communication, and

- instructing (2:7, 308) the wireless device (202) to use the selected values of DTX parameters for transmission on both the primary uplink carrier and the secondary uplink carrier.

2. A method according to claim 1 , wherein the first TTI is 10 ms and the second TTI is 2 ms, or wherein the first TTI is 2 ms and the second TTI is 10 ms.

3. A method according to claim 2, wherein the network node (200) selects values of DTX parameters as defined for the TTI of 2 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

4. A method according to claim 2, wherein the network node (200) selects values of DTX parameters as defined for the TTI of 10 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

5. A method according to claim 3 or 4, wherein the values of DTX

parameters defined for the TTI of 10 ms is a subset of the values of DTX parameters defined for the TTI of 2 ms.

6. A method according to any of claims 1 -5, wherein the DTX parameters comprise at least one of: a first DTX cycle 1 , a second DTX cycle 2, and a MAC DTX cycle.

7. A method according to any of claims 1 -6, wherein the values of DTX parameters are selected so that a DTX cycle used on the primary uplink carrier and a DTX cycle used on secondary uplink carrier are aligned.

8. A method according to any of claims 1 -7, wherein said communication comprises reception of Dedicated Physical Control Channel, DPCCH, bursts from the wireless device (202).

9. A network node (500) arranged to handle discontinuous transmission,

DTX, in a communication with a wireless device (502) using multiple uplink carriers, wherein the network node (500) is operable to:

- configure (500A) or obtain a primary uplink carrier with a first Transmission Time Interval, TTI, for the communication,

- configure (500A) or obtain a secondary uplink carrier with a second TTI which is different than the first TTI for the communication,

- select (500B) values of DTX parameters defined for one of the first and second TTIs for the communication, and

- instruct (500C) the wireless device (502) to use the selected values of DTX parameters for transmission on both the primary uplink carrier and the secondary uplink carrier.

10. A network node (500) according to claim 9, wherein the first TTI is 10 ms and the second TTI is 2 ms, or wherein the first TTI is 2 ms and the second TTI is 10 ms.

1 1 . A network node (500) according to claim 10, wherein the network node (200) selects values of DTX parameters as defined for the TTI of 2 ms for the

communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

12. A network node (500) according to claim 10, wherein the network node (200) selects values of DTX parameters as defined for the TTI of 10 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

13. A network node (500) according to claim 1 1 or 12, wherein the values of DTX parameters defined for the TTI of 10 ms is a subset of the values of DTX parameters defined for the TTI of 2 ms.

14. A network node (500) according to any of claims 9-13, wherein the DTX parameters comprise at least one of: a first DTX cycle 1 , a second DTX cycle 2, and a MAC DTX cycle.

15. A network node (500) according to any of claims 9-14, wherein the values of DTX parameters are selected so that a DTX cycle used on the primary uplink carrier and a DTX cycle used on secondary uplink carrier are aligned.

16. A network node (500) according to any of claims 9-15, wherein said communication comprises reception of Dedicated Physical Control Channel, DPCCH, bursts from the wireless device (502).

17. A method performed by a wireless device (202) for employing

discontinuous transmission, DTX, in a communication with a serving network node (200) on multiple uplink carriers, the method comprising:

- configuring (2:5, 402) or obtaining a primary uplink carrier with a first

Transmission Time Interval, TTI, for the communication,

- configuring (2:6, 404) or obtaining a secondary uplink carrier with a second TTI which is different than the first TTI for the communication,

- receiving (2:7, 406) an instruction from the network node (200) to use values of DTX parameters defined for one of the first and second TTIs for transmission on both the primary uplink carrier and the secondary uplink carrier, and

- applying (2:8, 2:9, 408) DTX according to said values of DTX parameters in the transmission on the primary and secondary uplink carriers.

18. A method according to claiml 7, wherein the first TTI is 10 ms and the second TTI is 2 ms, or wherein the first TTI is 10 ms and the second TTI is 2 ms.

19. A method according to claiml 8, wherein said values of DTX parameters are defined for the TTI of 2 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

20. A method according to claiml 8, wherein said values of DTX parameters are defined for the TTI of 10 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

21 . A method according to claim 19 or 20, wherein the values of DTX parameters defined for the TTI of 10 ms is a subset of the values of DTX parameters defined for the TTI of 2 ms.

22. A method according to any of claims 17-21 , wherein the DTX parameters comprise at least one of: a first DTX cycle 1 , a second DTX cycle 2, and a MAC

DTX cycle.

23. A method according to any of claims 17-22, wherein the values of DTX parameters are applied so that a DTX cycle used on the primary uplink carrier and a DTX cycle used on secondary uplink carrier are aligned.

24. A method according to any of claims 17-23, wherein said communication comprises transmission of Dedicated Physical Control Channel, DPCCH, bursts by the wireless device (202).

25. A wireless device (502) arranged to employ discontinuous transmission, DTX, in a communication with a serving network node (500) on multiple uplink carriers, wherein the wireless device (502) is operable to:

- configure (502A) or obtain a primary uplink carrier with a first Transmission Time Interval, TTI, for the communication,

- configure (502A) or obtain a secondary uplink carrier with a second TTI which is different than the first TTI for the communication,

- receive (502B) an instruction from the network node (200) to use values of DTX parameters defined for one of the first and second TTIs for transmission on both the primary uplink carrier and the secondary uplink carrier, and

- apply (502C) DTX according to said values of DTX parameters in the

transmission on the primary and secondary uplink carriers.

26. A wireless device (502) according to claim 25, wherein the first TTI is 10 ms and the second TTI is 2 ms, or wherein the first TTI is 10 ms and the second TTI is 2 ms.

27. A wireless device (502) according to claim 26, wherein said values of DTX parameters are defined for the TTI of 2 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

28. A wireless device (502) according to claim 26, wherein said values of DTX parameters are defined for the TTI of 10 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

29. A wireless device (502) according to claim 27 or 28, wherein the values of DTX parameters defined for the TTI of 10 ms is a subset of the values of DTX parameters defined for the TTI of 2 ms.

30. A wireless device (502) according to any of claims 25-29, wherein the DTX parameters comprise at least one of: a first DTX cycle 1 , a second DTX cycle 2, and a MAC DTX cycle.

31 . A wireless device (502) according to any of claims 25-30, wherein the values of DTX parameters are applied so that a DTX cycle used on the primary uplink carrier and a DTX cycle used on secondary uplink carrier are aligned.

32. A wireless device (502) according to any of claims 25-31 , wherein said communication comprises transmission of Dedicated Physical Control Channel, DPCCH, bursts by the wireless device (502).

33. A computer program comprising instructions which, when executed on at least one processor, cause the at least one processor to carry out the method according to any one of claims 1 -8 or the method according to any one of claims17-24.

34. A program carrier containing the computer program of claim 33, wherein the program carrier is one of an electronic signal, optical signal, radio signal, or computer readable storage medium.

35. A network node (500) arranged to handle discontinuous transmission, DTX, in a communication with a wireless device (502) using multiple uplink carriers, the network node (500) comprising a processor (P) and a memory (M) containing instructions executable by the processor whereby the network node (500) is operable to:

- configure (500A) or obtain a primary uplink carrier with a first Transmission Time Interval, TTI, for the communication,

- configure (500A) or obtain a secondary uplink carrier with a second TTI which is different than the first TTI for the communication,

- select (500B) values of DTX parameters defined for one of the first and second TTIs for the communication, and

- instruct (500C) the wireless device (502) to use the selected values of DTX parameters for transmission on both the primary uplink carrier and the secondary uplink carrier.

36. A network node (500) according to claim 35, wherein the first TTI is 10 ms and the second TTI is 2 ms, or wherein the first TTI is 2 ms and the second TTI is 10 ms.

37. A network node (500) according to claim 36, wherein the network node (200) selects values of DTX parameters as defined for the TTI of 2 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

38. A network node (500) according to claim 36, wherein the network node (200) selects values of DTX parameters as defined for the TTI of 10 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

39. A network node (500) according to claim 37 or 38, wherein the values of DTX parameters defined for the TTI of 10 ms is a subset of the values of DTX parameters defined for the TTI of 2 ms.

40. A network node (500) according to any of claims 35-39, wherein the DTX parameters comprise at least one of: a first DTX cycle 1 , a second DTX cycle 2, and a MAC DTX cycle.

41 . A network node (500) according to any of claims 35-40, wherein the values of DTX parameters are selected so that a DTX cycle used on the primary uplink carrier and a DTX cycle used on secondary uplink carrier are aligned.

42. A network node (500) according to any of claims 35-41 , wherein said communication comprises reception of Dedicated Physical Control Channel, DPCCH, bursts from the wireless device (502).

43. A wireless device (502) arranged to employ discontinuous transmission, DTX, in a communication with a serving network node (500) on multiple uplink carriers, the wireless device (502) comprising a processor (P) and a memory (M) containing instructions executable by the processor whereby the wireless device (502) is operable to:

- configure (502A) or obtain a primary uplink carrier with a first Transmission Time Interval, TTI, for the communication,

- configure (502A) or obtain a secondary uplink carrier with a second TTI which is different than the first TTI for the communication,

- receive (502B) an instruction from the network node (200) to use values of DTX parameters defined for one of the first and second TTIs for transmission on both the primary uplink carrier and the secondary uplink carrier, and

- apply (502C) DTX according to said values of DTX parameters in the

transmission on the primary and secondary uplink carriers.

44. A wireless device (502) according to claim 43, wherein the first TTI is 10 ms and the second TTI is 2 ms, or wherein the first TTI is 10 ms and the second TTI is 2 ms.

45. A wireless device (502) according to claim 44, wherein said values of DTX parameters are defined for the TTI of 2 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

46. A wireless device (502) according to claim 44, wherein said values of DTX parameters are defined for the TTI of 10 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

47. A wireless device (502) according to claim 45 or 46, wherein the values of DTX parameters defined for the TTI of 10 ms is a subset of the values of DTX parameters defined for the TTI of 2 ms.

48. A wireless device (502) according to any of claims 43-47, wherein the DTX parameters comprise at least one of: a first DTX cycle 1 , a second DTX cycle 2, and a MAC DTX cycle.

49. A wireless device (502) according to any of claims 43-48, wherein the values of DTX parameters are applied so that a DTX cycle used on the primary uplink carrier and a DTX cycle used on secondary uplink carrier are aligned.

50. A wireless device (502) according to any of claims 43-49, wherein said communication comprises transmission of Dedicated Physical Control Channel, DPCCH, bursts by the wireless device (502).

51 . A network node (500) arranged to handle discontinuous transmission, DTX, in a communication with a wireless device (502) using multiple uplink carriers, the network node (500) comprising:

- a configuring unit (500A) operable to configure or obtain a primary uplink carrier with a first Transmission Time Interval, TTI, for the communication, and to configure or obtain a secondary uplink carrier with a second TTI which is different than the first TTI for the communication,

- a selecting unit (500B) operable to select values of DTX parameters defined for one of the first and second TTIs for the communication, and

- an instructing unit (500C) operable to instruct the wireless device (502) to use the selected values of DTX parameters for transmission on both the primary uplink carrier and the secondary uplink carrier.

52. A network node (500) according to claim 51 , wherein the first TTI is 10 ms and the second TTI is 2 ms, or wherein the first TTI is 2 ms and the second TTI is 10 ms.

53. A network node (500) according to claim 52, wherein the network node (200) selects values of DTX parameters as defined for the TTI of 2 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

54. A network node (500) according to claim 52, wherein the network node (200) selects values of DTX parameters as defined for the TTI of 10 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

55. A network node (500) according to claim 53 or 54, wherein the values of DTX parameters defined for the TTI of 10 ms is a subset of the values of DTX parameters defined for the TTI of 2 ms.

56. A network node (500) according to any of claims 51 -55, wherein the DTX parameters comprise at least one of: a first DTX cycle 1 , a second DTX cycle 2, and a MAC DTX cycle.

57. A network node (500) according to any of claims 51 -56, wherein the values of DTX parameters are selected so that a DTX cycle used on the primary uplink carrier and a DTX cycle used on secondary uplink carrier are aligned.

58. A network node (500) according to any of claims 51 -57, wherein said communication comprises reception of Dedicated Physical Control Channel,

DPCCH, bursts from the wireless device (502).

59. A wireless device (502) arranged to employ discontinuous transmission, DTX, in a communication with a serving network node (500) on multiple uplink carriers, the wireless device (502) comprising:

- a configuring unit (502A) operable to configure or obtain a primary uplink carrier with a first Transmission Time Interval, TTI, for the communication, and to configure or obtain a secondary uplink carrier with a second TTI which is different than the first TTI for the communication,

- a receiving unit (502B) operable to receive an instruction from the network node (200) to use values of DTX parameters defined for one of the first and second TTIs for transmission on both the primary uplink carrier and the secondary uplink carrier, and

- an applying unit (502C) operable to apply DTX according to said values of DTX parameters in the transmission on the primary and secondary uplink carriers.

60. A wireless device (502) according to claim 59, wherein the first TTI is 10 ms and the second TTI is 2 ms, or wherein the first TTI is 10 ms and the second

TTI is 2 ms.

61 . A wireless device (502) according to claim 60, wherein said values of DTX parameters are defined for the TTI of 2 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

62. A wireless device (502) according to claim 60, wherein said values of DTX parameters are defined for the TTI of 10 ms for the communication on both carriers regardless of the TTIs configured on the primary uplink carrier and the secondary uplink carrier.

63. A wireless device (502) according to claim 61 or 62, wherein the values of DTX parameters defined for the TTI of 10 ms is a subset of the values of DTX parameters defined for the TTI of 2 ms.

64. A wireless device (502) according to any of claims 59-63, wherein the DTX parameters comprise at least one of: a first DTX cycle 1 , a second DTX cycle 2, and a MAC DTX cycle.

65. A wireless device (502) according to any of claims 59-64, wherein the values of DTX parameters are applied so that a DTX cycle used on the primary uplink carrier and a DTX cycle used on secondary uplink carrier are aligned.

66. A wireless device (502) according to any of claims 59-65, wherein said communication comprises transmission of Dedicated Physical Control Channel, DPCCH, bursts by the wireless device (502).