IP Library › Granted Patent US 11,382,048

Granted Patent B2

US 11,382,048 · App. 16/417,557 · Granted Jul 5, 2022

Multiplexing solutions in dual connectivity

Inventors: Peter Gaal (San Diego, CA); Alexei Yurievitch Gorokhov (San Diego, CA); Gene Fong (San Diego, CA); Timo Ville Vintola (San Diego, CA); Xiao Feng Wang (San Diego, CA); Heechoon Lee (San Diego, CA)

Assignee: QUALCOMM Incorporated

H04W52/346 H04W52/146 H04W76/16 H04W88/06

View Patent ↗

Loading inventors, assignments & file history…

Monitor This Case

Get email alerts when status or documents change.

Order Certified Copies

Most orders are placed with the USPTO same day — all within 24 business hours.

Order via The Patent Place →

Pre-filled with this patent's details

Quick Facts

Patent No.: US 11,382,048
App. No.: 16/417,557
Granted: Jul 5, 2022
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine that uplink communications are to be performed between the UE and a first cell group associated with a first radio access technology (RAT) and between the UE and a second cell group associated with a second RAT. The UE may determine that the UE is configured for power sharing for the uplink communications with the first cell group associated with the first RAT and the second cell group associated with the second RAT. The UE may calculate, based at least in part on the power sharing and the uplink communications, a power reduction factor for the uplink communications between the UE and the second cell group. The UE may perform the uplink communications with the first cell group and selectively perform the uplink communications with the second cell group.

Claims (199)

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

determining that uplink communications are to be performed between the UE and a first cell group associated with a first radio access technology (RAT) and between the UE and a second cell group associated with a second RAT;

determining that the UE is configured for power sharing for the uplink communications with the first cell group associated with the first RAT and the second cell group associated with the second RAT;

identifying a power sharing type of the UE between a first power sharing type configured to perform power sharing asymmetrically for the first cell group and the second cell group and a second power sharing type configured to perform power sharing symmetrically for the first cell group and the second cell group;

calculating a power reduction factor for the uplink communications between the UE and the second cell group, wherein the calculating is based at least in part on the power sharing, the power sharing type of the UE, and an overlap in time between the uplink communications with the first cell group and the uplink communications with the second cell group; and

performing the uplink communications with the first cell group and selectively performing the uplink communications with the second cell group based at least in part on the power reduction factor and a hop boundary alignment between the uplink communications with the second cell group and the uplink communications with the first cell group.

2. The method of claim 1 , further comprising:

determining, based at least in part on the power sharing type of the UE, that the UE is configured to calculate a first transmit power for the uplink communications of the first cell group and a second transmit power for the uplink communications of the second cell group together when calculating the power reduction factor; and

calculating, based at least in part on the power sharing type of the UE, an asymmetric power reduction factor for the uplink communications with the first cell group and with the second cell group.

3. The method of claim 1 , further comprising:

determining, based at least in part on the power sharing type of the UE, that that the UE is configured to calculate a first transmit power for the uplink communications of the first cell group and a second transmit power for the uplink communications of the second cell group independently when calculating the power reduction factor; and

calculating, based at least in part on the power sharing type of the UE, a symmetric power reduction factor for the uplink communications with the first cell group and with the second cell group.

4. The method of claim 1 , wherein calculating the power reduction factor comprises:

calculating a first transmit power for the uplink communications with the first cell group independent from a calculation of a second transmit power for the uplink communications with the second cell group; and

calculating a third transmit power for the uplink communications with the first cell group in consideration of a calculation of a fourth transmit power for the uplink communications with the second cell group.

5. The method of claim 4 , further comprising:

determining that a transmit power difference between the first transmit power and the third transmit power satisfies a threshold; and

dropping, based at least in part on the transmit power difference, from performing the uplink communications with the second cell group.

6. The method of claim 4 , further comprising:

determining that a transmit power difference between the second transmit power and the fourth transmit power satisfies a threshold; and

dropping, based at least in part on the transmit power difference, the uplink communications with the second cell group.

7. The method of claim 4 , further comprising:

determining that the first transmit power calculated for the uplink communications with the first cell group equals the third transmit power calculated for the uplink communications with the first cell group;

transmitting the uplink communications with the first cell group using the third transmit power based at least in part on determining that the first transmit power equals the third transmit power; and

transmitting the uplink communications with the second cell group using the fourth transmit power based at least in part on determining that the first transmit power equals the third transmit power, wherein performing the uplink communications is based at least in part on transmitting the uplink communications with the first cell group using the third transmit power and transmitting the uplink communications with the second cell group using the fourth transmit power.

8. The method of claim 4 , further comprising:

determining that the first transmit power calculated for the uplink communications with the first cell group is different than the third transmit power calculated for the uplink communications with the first cell group; and

selecting a fifth transmit power for the uplink communications with the second cell group based at least in part on determining that the first transmit power is different than the third transmit power, wherein the fifth transmit power is less than the fourth transmit power, wherein performing the uplink communications is based at least in part on selecting the fifth transmit power.

9. The method of claim 8 , further comprising:

selecting a sixth transmit power for the uplink communications with the first cell group based at least in part on selecting the fifth transmit power, wherein the sixth transmit power is less than the first transmit power and is greater than the third transmit power, wherein performing the uplink communications is based at least in part on selecting the sixth transmit power.

10. The method of claim 1 , further comprising:

determining that the uplink communications with the first cell group at least partially overlap in time with the uplink communications with the second cell group, wherein the power reduction factor is based at least in part on the overlap.

11. The method of claim 10 , further comprising:

determining, based at least in part on the power reduction factor, that the uplink communications with the first cell group comprise a reduced transmit power transmission; and

performing, based at least in part on the reduced transmit power, one or both of reducing the transmit power or dropping the uplink communications with the second cell group.

12. The method of claim 10 , further comprising:

determining, based at least in part on the power reduction factor, that the uplink communications with the second cell group comprise a reduced transmit power transmission; and

performing, based at least in part on the reduced transmit power, one or both of reducing the transmit power or dropping the uplink communications with the second cell group.

13. The method of claim 10 , further comprising:

determining that a first frequency band of the uplink communications with the first cell group at least partially overlap in frequency with a second frequency band of the uplink communications with the second cell group, wherein the power reduction factor is based at least in part on the overlap.

14. The method of claim 1 , further comprising:

determining that the second cell group uses a timeline that is compatible with the first cell group, wherein calculating the power reduction factor is based at least in part on determining that the second cell group uses the timeline that is compatible with the first cell group.

15. The method of claim 1 , wherein calculating the power reduction factor comprises:

determining whether a first communication schedule for the uplink communications with the first cell group is time aligned with respect to a second communication schedule for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the time alignment.

16. The method of claim 1 , wherein calculating the power reduction factor comprises:

determining whether a first grant for the uplink communications with the first cell group is received within a defined time window with respect to a second grant for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the first and second grants being received within the time window.

17. The method of claim 1 , wherein calculating the power reduction factor comprises:

determining whether a first boundary for the uplink communications with the first cell group is aligned with respect to a second boundary for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the alignment.

18. The method of claim 1 , wherein the first RAT comprises a long term evolution (LTE) RAT and the second RAT comprises a new radio (NR) RAT.

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

a processor;

memory coupled to the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

determine that uplink communications are to be performed between the UE and a first cell group associated with a first radio access technology (RAT) and between the UE and a second cell group associated with a second RAT;

determine that the UE is configured for power sharing for the uplink communications with the first cell group associated with the first RAT and the second cell group associated with the second RAT;

identify a power sharing type of the UE between a first power sharing type configured to perform power sharing asymmetrically for the first cell group and the second cell group and a second power sharing type configured to perform power sharing symmetrically for the first cell group and the second cell group;

calculate a power reduction factor for the uplink communications between the UE and the second cell group, wherein the calculating is based at least in part on the power sharing, the power sharing type of the UE, and an overlap in time between the uplink communications with the first cell group and the uplink communications with the second cell group; and

perform the uplink communications with the first cell group and selectively perform the uplink communications with the second cell group based at least in part on the power reduction factor and a hop boundary alignment between the uplink communications with the second cell group and the uplink communications with the first cell group.

20. The apparatus of claim 19 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine, based at least in part on power sharing type of the UE, that the UE is configured to calculate a first transmit power for the uplink communications of the first cell group and a second transmit power for the uplink communications of the second cell group together when calculating the power reduction factor; and

calculate, based at least in part on the power sharing type of the UE, an asymmetric power reduction factor for the uplink communications with the first cell group and with the second cell group.

21. The apparatus of claim 19 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine, based at least in part on the power sharing type of the UE, that that the UE is configured to calculate a first transmit power for the uplink communications of the first cell group and a second transmit power for the uplink communications of the second cell group independently when calculating the power reduction factor; and

calculate, based at least in part on the power sharing type of the UE, a symmetric power reduction factor for the uplink communications with the first cell group and with the second cell group.

22. The apparatus of claim 19 , wherein the instructions to calculate the power reduction factor are executable by the processor to cause the apparatus to:

calculate a first transmit power for the uplink communications with the first cell group independent from a calculation of a second transmit power for the uplink communications with the second cell group; and

calculate a third transmit power for the uplink communications with the first cell group in consideration of a calculation of a fourth transmit power for the uplink communications with the second cell group.

23. The apparatus of claim 22 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that a transmit power difference between the first transmit power and the third transmit power satisfies a threshold; and

drop, based at least in part on the transmit power difference, from performing the uplink communications with the second cell group.

24. The apparatus of claim 22 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that a transmit power difference between the second transmit power and the fourth transmit power satisfies a threshold; and

drop, based at least in part on the transmit power difference, the uplink communications with the second cell group.

25. The apparatus of claim 22 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that the first transmit power calculated for the uplink communications with the first cell group equals the third transmit power calculated for the uplink communications with the first cell group;

transmit the uplink communications with the first cell group using the third transmit power based at least in part on determining that the first transmit power equals the third transmit power; and

transmit the uplink communications with the second cell group using the fourth transmit power based at least in part on determining that the first transmit power equals the third transmit power, wherein performing the uplink communications is based at least in part on transmitting the uplink communications with the first cell group using the third transmit power and transmitting the uplink communications with the second cell group using the fourth transmit power.

26. The apparatus of claim 22 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that the first transmit power calculated for the uplink communications with the first cell group is different than the third transmit power calculated for the uplink communications with the first cell group; and

select a fifth transmit power for the uplink communications with the second cell group based at least in part on determining that the first transmit power is different than the third transmit power, wherein the fifth transmit power is less than the fourth transmit power, wherein performing the uplink communications is based at least in part on selecting the fifth transmit power.

27. The apparatus of claim 26 , wherein the instructions are further executable by the processor to cause the apparatus to:

select a sixth transmit power for the uplink communications with the first cell group based at least in part on selecting the fifth transmit power, wherein the sixth transmit power is less than the first transmit power and is greater than the third transmit power, wherein performing the uplink communications is based at least in part on selecting the sixth transmit power.

28. The apparatus of claim 19 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that the uplink communications with the first cell group at least partially overlap in time with the uplink communications with the second cell group, wherein the power reduction factor is based at least in part on the overlap.

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

determine, based at least in part on the power reduction factor, that the uplink communications with the first cell group comprise a reduced transmit power transmission; and

perform, based at least in part on the reduced transmit power, one or both of reducing the transmit power or dropping the uplink communications with the second cell group.

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

determine, based at least in part on the power reduction factor, that the uplink communications with the second cell group comprise a reduced transmit power transmission; and

perform, based at least in part on the reduced transmit power, one or both of reducing the transmit power or dropping the uplink communications with the second cell group.

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

determine that a first frequency band of the uplink communications with the first cell group at least partially overlap in frequency with a second frequency band of the uplink communications with the second cell group, wherein the power reduction factor is based at least in part on the overlap.

32. The apparatus of claim 19 , wherein the instructions are further executable by the processor to cause the apparatus to:

determine that the second cell group uses a timeline that is compatible with the first cell group, wherein calculating the power reduction factor is based at least in part on determining that the second cell group uses the timeline that is compatible with the first cell group.

33. The apparatus of claim 19 , wherein the instructions to calculate the power reduction factor are executable by the processor to cause the apparatus to:

determine whether a first communication schedule for the uplink communications with the first cell group is time aligned with respect to a second communication schedule for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the time alignment.

34. The apparatus of claim 19 , wherein the instructions to calculate the power reduction factor are executable by the processor to cause the apparatus to:

determine whether a first grant for the uplink communications with the first cell group is received within a defined time window with respect to a second grant for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the first and second grants being received within the time window.

35. The apparatus of claim 19 , wherein the instructions to calculate the power reduction factor are executable by the processor to cause the apparatus to:

determine whether a first boundary for the uplink communications with the first cell group is aligned with respect to a second boundary for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the alignment.

36. The apparatus of claim 19 , wherein the first RAT comprises a long term evolution (LTE) RAT and the second RAT comprises a new radio (NR) RAT.

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

means for determining that uplink communications are to be performed between the UE and a first cell group associated with a first radio access technology (RAT) and between the UE and a second cell group associated with a second RAT;

means for determining that the UE is configured for power sharing for the uplink communications with the first cell group associated with the first RAT and the second cell group associated with the second RAT;

means for identifying a power sharing type of the UE between a first power sharing type configured to perform power sharing asymmetrically for the first cell group and the second cell group and a second power sharing type configured to perform power sharing symmetrically for the first cell group and the second cell group;

means for calculating a power reduction factor for the uplink communications between the UE and the second cell group, wherein the calculating is based at least in part on the power sharing, the power sharing type of the UE, and and overlap in time between the uplink communications with the first cell group and the uplink communications with the second cell group; and

means for performing the uplink communications with the first cell group and selectively performing the uplink communications with the second cell group based at least in part on the power reduction factor and a hop boundary alignment between the uplink communications with the second cell group and the uplink communications with the first cell group.

38. The apparatus of claim 37 , further comprising:

means for determining, based at least in part on the power sharing type of the UE, that the UE is configured to calculate a first transmit power for the uplink communications of the first cell group and a second transmit power for the uplink communications of the second cell group together when calculating the power reduction factor; and

means for calculating, based at least in part on the power sharing type of the UE, an asymmetric power reduction factor for the uplink communications with the first cell group and with the second cell group.

39. The apparatus of claim 37 , further comprising:

means for determining, based at least in part on the power sharing type of the UE, that that the UE is configured to calculate a first transmit power for the uplink communications of the first cell group and a second transmit power for the uplink communications of the second cell group independently when calculating the power reduction factor; and

means for calculating, based at least in part on the power sharing type of the UE, a symmetric power reduction factor for the uplink communications with the first cell group and with the second cell group.

40. The apparatus of claim 37 , wherein the means for calculating the power reduction factor comprises:

means for calculating a first transmit power for the uplink communications with the first cell group independent from a calculation of a second transmit power for the uplink communications with the second cell group; and

means for calculating a third transmit power for the uplink communications with the first cell group in consideration of a calculation of a fourth transmit power for the uplink communications with the second cell group.

41. The apparatus of claim 40 , further comprising:

means for determining that a transmit power difference between the first transmit power and the third transmit power satisfies a threshold; and

means for dropping, based at least in part on the transmit power difference, from performing the uplink communications with the second cell group.

42. The apparatus of claim 40 , further comprising:

means for determining that a transmit power difference between the second transmit power and the fourth transmit power satisfies a threshold; and

means for dropping, based at least in part on the transmit power difference, the uplink communications with the second cell group.

43. The apparatus of claim 40 , further comprising:

means for determining that the first transmit power calculated for the uplink communications with the first cell group equals the third transmit power calculated for the uplink communications with the first cell group;

means for transmitting the uplink communications with the first cell group using the third transmit power based at least in part on determining that the first transmit power equals the third transmit power; and

means for transmitting the uplink communications with the second cell group using the fourth transmit power based at least in part on determining that the first transmit power equals the third transmit power, wherein performing the uplink communications is based at least in part on transmitting the uplink communications with the first cell group using the third transmit power and transmitting the uplink communications with the second cell group using the fourth transmit power.

44. The apparatus of claim 40 , further comprising:

means for determining that the first transmit power calculated for the uplink communications with the first cell group is different than the third transmit power calculated for the uplink communications with the first cell group; and

means for selecting a fifth transmit power for the uplink communications with the second cell group based at least in part on determining that the first transmit power is different than the third transmit power, wherein the fifth transmit power is less than the fourth transmit power, wherein performing the uplink communications is based at least in part on selecting the fifth transmit power.

45. The apparatus of claim 44 , further comprising:

means for selecting a sixth transmit power for the uplink communications with the first cell group based at least in part on selecting the fifth transmit power, wherein the sixth transmit power is less than the first transmit power and is greater than the third transmit power, wherein performing the uplink communications is based at least in part on selecting the sixth transmit power.

46. The apparatus of claim 37 , further comprising:

means for determining that the uplink communications with the first cell group at least partially overlap in time with the uplink communications with the second cell group, wherein the power reduction factor is based at least in part on the overlap.

47. The apparatus of claim 46 , further comprising:

means for determining, based at least in part on the power reduction factor, that the uplink communications with the first cell group comprise a reduced transmit power transmission; and

means for performing, based at least in part on the reduced transmit power, one or both of reducing the transmit power or dropping the uplink communications with the second cell group.

48. The apparatus of claim 46 , further comprising:

means for determining, based at least in part on the power reduction factor, that the uplink communications with the second cell group comprise a reduced transmit power transmission; and

means for performing, based at least in part on the reduced transmit power, one or both of reducing the transmit power or dropping the uplink communications with the second cell group.

49. The apparatus of claim 46 , further comprising:

means for determining that a first frequency band of the uplink communications with the first cell group at least partially overlap in frequency with a second frequency band of the uplink communications with the second cell group, wherein the power reduction factor is based at least in part on the overlap.

50. The apparatus of claim 37 , further comprising:

means for determining that the second cell group uses a timeline that is compatible with the first cell group, wherein calculating the power reduction factor is based at least in part on determining that the second cell group uses the timeline that is compatible with the first cell group.

51. The apparatus of claim 37 , wherein the means for calculating the power reduction factor comprises:

means for determining whether a first communication schedule for the uplink communications with the first cell group is time aligned with respect to a second communication schedule for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the time alignment.

52. The apparatus of claim 37 , wherein the means for calculating the power reduction factor comprises:

means for determining whether a first grant for the uplink communications with the first cell group is received within a defined time window with respect to a second grant for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the first and second grants being received within the time window.

53. The apparatus of claim 37 , wherein the means for calculating the power reduction factor comprises:

means for determining whether a first boundary for the uplink communications with the first cell group is aligned with respect to a second boundary for the uplink communications with the second cell group, wherein selectively performing the uplink communications with the second cell group is based on the alignment.

54. The apparatus of claim 37 , wherein the first RAT comprises a long term evolution (LTE) RAT and the second RAT comprises a new radio (NR) RAT.

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:

determine that the UE is configured for power sharing for the uplink communications with the first cell group associated with the first RAT and the second cell group associated with the second RAT;

56. The non-transitory computer-readable medium of claim 55 , wherein the instructions are further executable to:

determine, based at least in part on the power sharing type of the UE, that the UE is configured to calculate a first transmit power for the uplink communications of the first cell group and a second transmit power for the uplink communications of the second cell group together when calculating the power reduction factor; and

calculate, based at least in part on the power sharing type of the UE, an asymmetric power reduction factor for the uplink communications with the first cell group and with the second cell group.

57. The non-transitory computer-readable medium of claim 55 , wherein the instructions are further executable to:

calculate, based at least in part on the power sharing type of the UE, a symmetric power reduction factor for the uplink communications with the first cell group and with the second cell group.

58. The non-transitory computer-readable medium of claim 55 , wherein the instructions to calculate the power reduction factor are executable to:

59. The non-transitory computer-readable medium of claim 58 , wherein the instructions are further executable to:

determine that a transmit power difference between the first transmit power and the third transmit power satisfies a threshold; and

drop, based at least in part on the transmit power difference, from performing the uplink communications with the second cell group.

60. The non-transitory computer-readable medium of claim 58 , wherein the instructions are further executable to:

determine that a transmit power difference between the second transmit power and the fourth transmit power satisfies a threshold; and

drop, based at least in part on the transmit power difference, the uplink communications with the second cell group.

61. The non-transitory computer-readable medium of claim 58 , wherein the instructions are further executable to:

transmit the uplink communications with the first cell group using the third transmit power based at least in part on determining that the first transmit power equals the third transmit power; and

62. The non-transitory computer-readable medium of claim 58 , wherein the instructions are further executable to:

63. The non-transitory computer-readable medium of claim 62 , wherein the instructions are further executable to:

64. The non-transitory computer-readable medium of claim 55 , wherein the instructions are further executable to:

65. The non-transitory computer-readable medium of claim 64 , wherein the instructions are further executable to:

determine, based at least in part on the power reduction factor, that the uplink communications with the first cell group comprise a reduced transmit power transmission; and

perform, based at least in part on the reduced transmit power, one or both of reducing the transmit power or dropping the uplink communications with the second cell group.

66. The non-transitory computer-readable medium of claim 64 , wherein the instructions are further executable to:

determine, based at least in part on the power reduction factor, that the uplink communications with the second cell group comprise a reduced transmit power transmission; and

perform, based at least in part on the reduced transmit power, one or both of reducing the transmit power or dropping the uplink communications with the second cell group.

67. The non-transitory computer-readable medium of claim 64 , wherein the instructions are further executable to:

68. The non-transitory computer-readable medium of claim 55 , wherein the instructions are further executable to:

69. The non-transitory computer-readable medium of claim 55 , wherein the instructions to calculate the power reduction factor are executable to:

70. The non-transitory computer-readable medium of claim 55 , wherein the instructions to calculate the power reduction factor are executable to:

71. The non-transitory computer-readable medium of claim 55 , wherein the instructions to calculate the power reduction factor are executable to:

72. The non-transitory computer-readable medium of claim 55 , wherein the first RAT comprises a long term evolution (LTE) RAT and the second RAT comprises a new radio (NR) RAT.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2019

From: GAAL, PETER; GOROKHOV, ALEXEI YURIEVITCH; FONG, GENE; VINTOLA, TIMO VILLE; WANG, XIAO FENG; LEE, HEECHOON

To: QUALCOMM INCORPORATED

Reel/Frame 050315/0037 →

Continuity (3)

Provisional Application 62684182 · Jun 12, 2018

Provisional Application 62675155 · May 22, 2018

Related Publication 20190364517A1 · Nov 28, 2019