Uplink transmissions in a wireless device

1. A method comprising:

receiving, by a wireless device and from a base station, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell, wherein the plurality of cells are grouped into a plurality of cell groups;

receiving, by the wireless device, a control command configured to cause the wireless device to transmit a random access preamble via a random access channel associated with a first cell of a first cell group of the plurality of cell groups; and

transmitting, overlapping in time with a transmission of the random access preamble and in a first subframe of the first cell, an uplink packet, wherein transmission power associated with the uplink packet is based on:

a maximum allowable transmission power associated with the first subframe of the first cell; and

transmission power associated with the random access preamble.

2. The method of claim 1 , wherein the transmission power associated with the uplink packet is further based on:

a difference between a determined power associated with the random access preamble and the maximum allowable transmission power associated with the first subframe of the first cell, if a combined power of a determined transmission power associated with the uplink packet and the determined power associated with the random access preamble exceeds the maximum allowable transmission power.

3. The method of claim 1 , wherein the maximum allowable transmission power is an allowable transmission power for the first cell.

4. The method of claim 1 , wherein each cell of the plurality of cells is assigned a corresponding maximum allowable transmission power.

5. The method of claim 1 , wherein the uplink packet is a physical uplink shared channel data packet or a physical uplink control channel control packet.

6. The method of claim 1 , wherein the at least one message is configured to cause configuration of the random access channel.

7. The method of claim 1 , wherein the control command comprises an index of the random access preamble.

8. The method of claim 1 , wherein:

the first cell group is a secondary cell group; and

the first cell is a secondary cell of the secondary cell group.

9. A method comprising:

receiving, by a wireless device and from a base station, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell;

b) receiving, by the wireless device, a control command configured to cause the wireless device to transmit a random access preamble via a random access channel associated with a first cell of the plurality of cells; and

transmitting, overlapping in time with a transmission of the random access preamble and in a first subframe of the first cell, an uplink packet, wherein transmission power associated with the uplink packet is based on:

a maximum allowable transmission power associated with the first subframe of the first cell; and

a transmission power associated with the random access preamble.

10. The method of claim 9 , wherein the transmission power associated with the uplink packet is further based on:

a difference between a determined power associated with the random access preamble and the maximum allowable transmission power associated with the first subframe of the first cell, if a combined power of a determined transmission power associated with the uplink packet and the determined power associated with the random access preamble exceeds the maximum allowable transmission power.

11. The method of claim 9 , wherein the maximum allowable transmission power is an allowable transmission power for the first cell.

12. The method of claim 9 , wherein each cell of the plurality of cells is assigned a corresponding maximum allowable transmission power.

13. The method of claim 9 , wherein the uplink packet is a physical uplink shared channel data packet or a physical uplink control channel control packet.

14. The method of claim 9 , wherein the at least one message is configured to cause configuration of the random access channel.

15. The method of claim 9 , wherein the control command comprises an index of the random access preamble.

16. The method of claim 9 , wherein the first cell is a secondary cell of a secondary 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:

receive, from a base station, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell;

receive, from the base station, a control command configured to cause the wireless device to transmit a random access preamble via a random access channel associated with a first cell of the plurality of cells; and

transmit, overlapping in time with a transmission of the random access preamble and in a first subframe of the first cell, an uplink packet, wherein transmission power associated with the uplink packet is based on:

a maximum allowable transmission power associated with the first subframe of the first cell; and

a transmission power associated with the random access preamble.

18. The wireless device of claim 17 , wherein the transmission power associated with the uplink packet is further based on:

a difference between a determined power associated with the random access preamble and the maximum allowable transmission power associated with the first subframe of the first cell, if a combined power of a determined transmission power associated with the uplink packet and the determined power associated with the random access preamble exceeds the maximum allowable transmission power.

19. The wireless device of claim 17 , wherein the maximum allowable transmission power is an allowable transmission power for the first cell.

20. The wireless device of claim 17 , wherein each cell of the plurality of cells is assigned a corresponding maximum allowable transmission power.

21. The wireless device of claim 17 , wherein the uplink packet is a physical uplink shared channel data packet or a physical uplink control channel control packet.

22. The wireless device of claim 17 , wherein the at least one message is configured to cause configuration of the random access channel.

23. The wireless device of claim 17 , wherein the control command comprises an index of the random access preamble.

24. The wireless device of claim 17 , wherein the first cell is a secondary cell of a secondary cell group.

25. 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, to a wireless device, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell;

transmit, to the wireless device, a control command configured to cause the wireless device to transmit a random access preamble via a random access channel associated with a first cell of the plurality of cells; and

receive, from the wireless device, transmitted overlapping in time with a transmission of the random access preamble, and in a first subframe of the first cell, an uplink packet, wherein transmission power associated with the uplink packet is based on:

a maximum allowable transmission power associated with the first subframe of the first cell; and

a transmission power associated with the random access preamble.

26. The base station of claim 25 , wherein the transmission power associated with the uplink packet is further based on:

a difference between a determined power associated with the random access preamble and the maximum allowable transmission power associated with the first subframe of the first cell, if a combined power of a determined transmission power associated with the uplink packet and the determined power associated with the random access preamble exceeds the maximum allowable transmission power.

27. The base station of claim 25 , wherein the maximum allowable transmission power is an allowable transmission power for the first cell.

28. The base station of claim 25 , wherein each cell of the plurality of cells is assigned a corresponding maximum allowable transmission power.

29. The base station of claim 25 , wherein the uplink packet is a physical uplink shared channel data packet or a physical uplink control channel control packet.

30. The base station of claim 25 , wherein the at least one message is configured to cause configuration of the random access channel.

31. The base station of claim 25 , wherein the control command comprises an index of the random access preamble.

32. The base station of claim 25 , wherein the first cell is a secondary cell of a secondary cell group.

33. A method comprising:

transmitting, by a base station and to a wireless device, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell;

transmitting, to the wireless device, a control command configured to cause the wireless device to transmit a random access preamble via a random access channel associated with a first cell of the plurality of cells; and

receiving, from the wireless device, transmitted overlapping in time with a transmission of the random access preamble, and in a first subframe of the first cell, an uplink packet, wherein transmission power associated with the uplink packet is based on:

a maximum allowable transmission power associated with the first subframe of the first cell; and

a transmission power associated with the random access preamble.

34. The method of claim 33 , wherein the transmission power associated with the uplink packet is further based on:

a difference between a determined power associated with the random access preamble and the maximum allowable transmission power associated with the first subframe of the first cell, if a combined power of a determined transmission power associated with the uplink packet and the determined power associated with the random access preamble exceeds the maximum allowable transmission power.

35. The method of claim 33 , wherein the maximum allowable transmission power is an allowable transmission power for the first cell.

36. The method of claim 33 , wherein each cell of the plurality of cells is assigned a corresponding maximum allowable transmission power.

37. The method of claim 33 , wherein the uplink packet is a physical uplink shared channel data packet or a physical uplink control channel control packet.

38. The method of claim 33 , wherein the at least one message is configured to cause configuration of the random access channel.

39. The method of claim 33 , wherein the control command comprises an index of the random access preamble.

40. The method of claim 33 , wherein the first cell is a secondary cell of a secondary cell group.

41. A system comprising:

a base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors of the base station, cause the base station to:

transmit at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell; and

a wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors of the wireless device, cause the wireless device to:

receive the at least one message;

receive, from the base station, a control command configured to cause the wireless device to transmit a random access preamble via a random access channel associated with a first cell of the plurality of cells; and

transmit, overlapping in time with a transmission of the random access preamble and in a first subframe of the first cell, an uplink packet, wherein transmission power associated with the uplink packet is based on:

a maximum allowable transmission power associated with the first subframe of the first cell; and

a transmission power associated with the random access preamble.

42. The system of claim 41 , wherein the transmission power associated with the uplink packet is further based on:

a difference between a determined power associated with the random access preamble and the maximum allowable transmission power associated with the first subframe of the first cell, if a combined power of a determined transmission power associated with the uplink packet and the determined power associated with the random access preamble exceeds the maximum allowable transmission power.

43. The system of claim 41 , wherein the maximum allowable transmission power is an allowable transmission power for the first cell.

44. The system of claim 41 , wherein each cell of the plurality of cells is assigned a corresponding maximum allowable transmission power.

45. The system of claim 41 , wherein the uplink packet is a physical uplink shared channel data packet or a physical uplink control channel control packet.

46. The system of claim 41 , wherein the at least one message is configured to cause configuration of the random access channel.

47. The system of claim 41 , wherein the control command comprises an index of the random access preamble.

48. The system of claim 41 , wherein the first cell is a secondary cell of a secondary cell group.

49. A method comprising:

transmitting, by a base station and to a wireless device, at least one message comprising configuration parameters of a plurality of cells comprising a primary cell and at least one secondary cell;

transmitting, by the base station, a control command configured to cause the wireless device to transmit a random access preamble via a random access channel associated with a first cell of the plurality of cells; and

transmitting, by the wireless device, overlapping in time with a transmission of the random access preamble, and in a first subframe of the first cell, an uplink packet, wherein transmission power associated with the uplink packet is based on:

a maximum allowable transmission power associated with the first subframe of the first cell; and

a transmission power associated with the random access preamble.

50. The method of claim 49 , wherein the transmission power associated with the uplink packet is further based on:

a difference between a determined power associated with the random access preamble and the maximum allowable transmission power associated with the first subframe of the first cell, if a combined power of a determined transmission power associated with the uplink packet and the determined power associated with the random access preamble exceeds the maximum allowable transmission power.

51. The method of claim 49 , wherein the maximum allowable transmission power is an allowable transmission power for the first cell.

52. The method of claim 49 , wherein each cell of the plurality of cells is assigned a corresponding maximum allowable transmission power.

53. The method of claim 49 , wherein the uplink packet is a physical uplink shared channel data packet or a physical uplink control channel control packet.

54. The method of claim 49 , wherein the at least one message is configured to cause configuration of the random access channel.

55. The method of claim 49 , wherein the control command comprises an index of the random access preamble.

56. The method of claim 49 , wherein the first cell is a secondary cell of a secondary cell group.