Signal transmission power adjustment in a wireless device
Wireless communications are described. A wireless device may be configured to transmit a first signal via a first cell group that may overlap in time with a second signal via a second cell group. The wireless device may adjust a signal transmission power of at least one of the first signal or the second signal. Additionally or alternatively, the wireless device may drop at least one of the first signal or the second signal. Adjusting and/or dropping at least one of the first signal or the second signal may be based on the overlap in time of these signals satisfying a duration threshold and a total power to transmit the first signal and the second signal exceeding a power threshold.
1. A method comprising:
determining a first transmission power for a first signal, wherein the first signal starts in a first time interval of a first cell of a plurality of cells;
determining a second transmission power for a second signal, wherein the second signal starts in a second time interval of a second cell of the plurality of cells, and wherein the second signal overlaps, in time, with the first signal;
based on a determination that a calculated transmission power exceeds an allowable transmission power and that the first signal and the second signal overlap, in time, by more than a threshold, adjusting the first transmission power or the second transmission power; and
transmitting at least one of the first signal via the first cell or the second signal via the second cell.
2. The method of claim 1 , wherein the first time interval and the second time interval each comprise at least one of:
a subframe;
a transmission time interval;
a slot;
a symbol;
a resource element;
a resource block; or
a resource block group.
3. The method of claim 1 , wherein the calculated transmission power comprises a combination of the first transmission power and the second transmission power.
4. The method of claim 1 , wherein:
the first time interval comprises the first signal; and
the second time interval comprises the second signal.
5. The method of claim 1 , further comprising:
determining a third transmission power for a third signal starting in a third time interval of a cell of a first cell group;
determining a fourth transmission power for a fourth signal starting in a fourth time interval of a cell of a second cell group, wherein the fourth signal overlaps, in time, with the third signal; and
based on a determination that the calculated transmission power exceeds the allowable transmission power and that the third signal and the fourth signal overlap, in time, by more than a second threshold, dropping transmission of at least one of the third signal or the fourth signal.
6. The method of claim 5 , wherein the second threshold is greater than the threshold.
7. The method of claim 1 , wherein:
the first signal is a random access preamble signal, an uplink data packet, or an uplink control packet; and
the second signal is a type of signal different from the first signal.
8. The method of claim 1 , wherein:
the second signal is a sounding reference signal or a random access preamble signal; and
the first signal is a type of signal different from the second signal.
9. The method of claim 1 , wherein the allowable transmission power is a maximum allowable transmission power of a wireless device.
10. The method of claim 1 , wherein the calculated transmission power is a total transmission power of a wireless device.
11. The method of claim 1 , wherein the transmitting at least one of the first signal or the second signal comprises transmitting the first signal and the second signal.
12. The method of claim 1 , wherein the transmitting at least one of the first signal or the second signal comprises transmitting one of the first signal or the second signal and dropping the other of the first signal or the second signal.
13. The method of claim 1 , wherein the threshold is a duration of one symbol.
14. The method of claim 1 , further comprising receiving at least one radio resource control (RRC) message comprising configuration parameters of the plurality of cells.
15. The method of claim 1 , wherein:
the first cell is a cell of a first cell group; and
the second cell is a cell of a second cell group.
16. The method of claim 1 , wherein the plurality of cells are grouped into a plurality of cell groups comprising a first cell group and a second cell group, and wherein:
uplink transmission timing associated with the first cell group is based on a cell of the first cell group; and
uplink transmission timing associated with the second cell group is based on a cell of the second cell group.
17. 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:
determine a first transmission power for a first signal, wherein the first signal starts in a first time interval of a first cell of a plurality of cells;
determine a second transmission power for a second signal, wherein the second signal starts in a second time interval of a second cell of the plurality of cells, and wherein the second signal overlaps, in time, with the first signal;
based on a determination that a calculated transmission power exceeds an allowable transmission power and that the first signal and the second signal overlap, in time, by more than a threshold, adjust the first transmission power or the second transmission power; and
transmit at least one of the first signal via the first cell or the second signal via the second cell.
18. The wireless device of claim 17 , wherein the first time interval and the second time interval each comprise at least one of:
a subframe;
a transmission time interval;
a slot;
a symbol;
a resource element;
a resource block; or
a resource block group.
19. The wireless device of claim 17 , wherein the calculated transmission power comprises a combination of the first transmission power and the second transmission power.
20. The wireless device of claim 17 , wherein:
the first time interval comprises the first signal; and
the second time interval comprises the second signal.
21. The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:
determine a third transmission power for a third signal starting in a third time interval of a cell of a first cell group;
determine a fourth transmission power for a fourth signal starting in a fourth time interval of a cell of a second cell group, wherein the fourth signal overlaps, in time, with the third signal; and
based on a determination that the calculated transmission power exceeds the allowable transmission power and that the third signal and the fourth signal overlap, in time, by more than a second threshold, drop transmission of at least one of the third signal or the fourth signal.
22. The wireless device of claim 21 , wherein the second threshold is greater than the threshold.
23. The wireless device of claim 17 , wherein:
the first signal is a random access preamble signal, an uplink data packet, or an uplink control packet; and
the second signal is a type of signal different from the first signal.
24. The wireless device of claim 17 , wherein:
the second signal is a sounding reference signal or a random access preamble signal; and
the first signal is a type of signal different from the second signal.
25. The wireless device of claim 17 , wherein the allowable transmission power is a maximum allowable transmission power of a wireless device.
26. The wireless device of claim 17 , wherein the calculated transmission power is a total transmission power of a wireless device.
27. The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, cause the wireless device to transmit the first signal and the second signal.
28. The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, cause the wireless device to transmit one of the first signal or the second signal and drop the other of the first signal or the second signal.
29. The wireless device of claim 17 , wherein the threshold is a duration of one symbol.
30. The wireless device of claim 17 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to receive at least one radio resource control (RRC) message comprising configuration parameters of the plurality of cells.
31. The wireless device of claim 17 , wherein:
the first cell is a cell of a first cell group; and
the second cell is a cell of a second cell group.
32. The wireless device of claim 17 , wherein the plurality of cells are grouped into a plurality of cell groups comprising a first cell group and a second cell group, and wherein:
uplink transmission timing associated with the first cell group is based on a cell of the first cell group; and
uplink transmission timing associated with the second cell group is based on a cell of the second cell group.
33. A method comprising:
transmitting configuration parameters of a plurality of cells; and
receiving at least one of:
a first signal starting in a first time interval of a first cell of the plurality of cells; or
a second signal starting in a second time interval of a second cell of the plurality of cells,
wherein a first transmission power of the first signal or a second transmission power of the second signal was adjusted based on a determination that a calculated transmission power exceeds an allowable transmission power and that the first signal and the second signal overlap, in time, by more than a threshold.
34. The method of claim 33 , wherein the first time interval and the second time interval each comprise at least one of:
a subframe;
a transmission time interval;
a slot;
a symbol;
a resource element;
a resource block; or
a resource block group.
35. The method of claim 33 , wherein the calculated transmission power comprises a combination of the first transmission power and the second transmission power.
36. The method of claim 33 , wherein:
the first time interval comprises the first signal; and
the second time interval comprises the second signal.
37. The method of claim 33 , wherein:
the first signal is a random access preamble signal, an uplink data packet, or an uplink control packet; and
the second signal is a type of signal different from the first signal.
38. The method of claim 33 , wherein:
the second signal is a sounding reference signal or a random access preamble signal; and
the first signal is a type of signal different from the second signal.
39. The method of claim 33 , wherein the allowable transmission power is a maximum allowable transmission power of a wireless device.
40. The method of claim 33 , wherein the calculated transmission power is a total transmission power of a wireless device.
41. The method of claim 33 , wherein the receiving at least one of the first signal or the second signal comprises receiving the first signal and the second signal.
42. The method of claim 33 , wherein the receiving at least one of the first signal or the second signal comprises receiving one of the first signal or the second signal.
43. The method of claim 33 , wherein the threshold is a duration of one symbol.
44. The method of claim 33 , wherein the transmitting the configuration parameters comprises transmitting at least one radio resource control (RRC) message comprising the configuration parameters.
45. The method of claim 33 , wherein:
the first cell is a cell of a first cell group; and
the second cell is a cell of a second cell group.
46. The method of claim 33 , wherein the plurality of cells are grouped into a plurality of cell groups comprising a first cell group and a second cell group, and wherein:
uplink transmission timing associated with the first cell group is based on a cell of the first cell group; and
uplink transmission timing associated with the second cell group is based on a cell of the second cell group.
47. 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 configuration parameters of a plurality of cells; and
receive at least one of:
a first signal starting in a first time interval of a first cell of the plurality of cells; or
a second signal starting in a second time interval of a second cell of the plurality of cells,
wherein a first transmission power of the first signal or a second transmission power of the second signal was adjusted based on a determination that a calculated transmission power exceeds an allowable transmission power and that the first signal and the second signal overlap, in time, by more than a threshold.
48. The base station of claim 47 , wherein the first time interval and the second time interval each comprise at least one of:
a subframe;
a transmission time interval;
a slot;
a symbol;
a resource element;
a resource block; or
a resource block group.
49. The base station of claim 47 , wherein the calculated transmission power comprises a combination of the first transmission power and the second transmission power.
50. The base station of claim 47 , wherein:
the first time interval comprises the first signal; and
the second time interval comprises the second signal.
51. The base station of claim 47 , wherein:
the first signal is a random access preamble signal, an uplink data packet, or an uplink control packet; and
the second signal is a type of signal different from the first signal.
52. The base station of claim 47 , wherein:
the second signal is a sounding reference signal or a random access preamble signal; and
the first signal is a type of signal different from the second signal.
53. The base station of claim 47 , wherein the allowable transmission power is a maximum allowable transmission power of a wireless device.
54. The base station of claim 47 , wherein the calculated transmission power is a total transmission power of a wireless device.
55. The base station of claim 47 , wherein the instructions, when executed by the one or more processors, cause the base station to receive the first signal and the second signal.
56. The base station of claim 47 , wherein the instructions, when executed by the one or more processors, cause the base station to receive one of the first signal or the second signal.
57. The base station of claim 47 , wherein the threshold is a duration of one symbol.
58. The base station of claim 47 , wherein the instructions, when executed by the one or more processors, further cause the base station to transmit the configuration parameters by transmitting at least one radio resource control (RRC) message comprising the configuration parameters.
59. The base station of claim 47 , wherein:
the first cell is a cell of a first cell group; and
the second cell is a cell of a second cell group.
60. The base station of claim 47 , wherein the plurality of cells are grouped into a plurality of cell groups comprising a first cell group and a second cell group, and wherein:
uplink transmission timing associated with the first cell group is based on a cell of the first cell group; and
uplink transmission timing associated with the second cell group is based on a cell of the second cell group.
61. A system comprising:
a base station comprising:
one or more processors; and
memory storing instructions; and
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:
determine a first transmission power for a first signal, wherein the first signal starts in a first time interval of a first cell of a plurality of cells;
determine a second transmission power for a second signal, wherein the second signal starts in a second time interval of a second cell of the plurality of cells, and wherein the second signal overlaps, in time, with the first signal;
based on a determination that a calculated transmission power exceeds an allowable transmission power and that the first signal and the second signal overlap, in time, by more than a threshold, adjust the first transmission power or the second transmission power; and
transmit at least one of the first signal via the first cell or the second signal via the second cell, and
wherein the memory of the base station, when executed by the one or more processors of the base station, cause the base station to:
transmit configuration parameters of the plurality of cells; and
receive the at least one of the first signal via the first cell or the second signal via the second cell.
62. The system of claim 61 , wherein the first time interval and the second time interval each comprise at least one of:
a subframe;
a transmission time interval;
a slot;
a symbol;
a resource element;
a resource block; or
a resource block group.
63. The system of claim 61 , wherein the calculated transmission power comprises a combination of the first transmission power and the second transmission power.
64. The system of claim 61 , wherein:
the first signal is a random access preamble signal, an uplink data packet, or an uplink control packet; and
the second signal is a type of signal different from the first signal.
65. The system of claim 61 , wherein:
the second signal is a sounding reference signal or a random access preamble signal; and
the first signal is a type of signal different from the second signal.
66. The system of claim 61 , wherein the allowable transmission power is one of:
a maximum allowable transmission power of a wireless device; or
a total transmission power of a wireless device.
67. The system of claim 61 , wherein the instructions stored in the memory of the wireless device when executed by the one or more processors of the wireless device, cause the wireless device to transmit the first signal and the second signal.
68. The system of claim 61 , wherein the instructions stored in the memory of the wireless device when executed by the one or more processors of the wireless device, cause the wireless device to transmit one of the first signal or the second signal and drop the other of the first signal or the second signal.
69. The system of claim 61 , wherein the threshold is a duration of one symbol.
70. The system of claim 61 , wherein the plurality of cells are grouped into a plurality of cell groups comprising a first cell group and a second cell group, and wherein:
uplink transmission timing associated with the first cell group is based on a cell of the first cell group; and
uplink transmission timing associated with the second cell group is based on a cell of the second cell group.