WIRELESS DEVICE, A NETWORK NODE AND METHODS THEREIN

• US 20140126530A1
• Filed: 06/18/2012
• Published: 05/08/2014
• Est. Priority Date: 06/17/2011
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Siomina, Iana, Kazmi, Muhammad, Lindoff, Bengt
• Application Number:
  US14/124,044
• Publication Number:
  US 20140126530A1
• Time in Patent Office: Days
• US Class Current: 370/330
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/244 Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]

Abstract

A wireless device and a method therein. The method comprises obtaining first and second sets of uplink power control parameters. The first set of uplink power control parameters is associated with a first set of time and/or frequency resources and the second set of uplink power control parameters is associated with a second set of time and/or frequency resources. The method further comprises configuring transmissions of a first type of signals using the first set of uplink power control parameters when the transmissions are comprised in the first set of time and/or frequency resources, and configuring transmissions of the first type of signals using the second set of uplink power control parameters when transmissions are comprised in the second set of time and/or frequency resources.

Claims

1. A method in a wireless device for configuration of uplink power control, the method comprises:

obtaining a first set of uplink power control parameters and a second set of uplink power control parameters for transmitting a first type of signals, wherein the first set of uplink power control parameters is associated with a first set of time and/or frequency resources, and wherein the second set of uplink power control parameters is associated with a second set of time and/or frequency resources;

configuring transmissions of the first type of signals using the first set of uplink power control parameters when the transmissions are comprised in the first set of time and/or frequency resources; and

configuring transmissions of the first type of signals using the second set of uplink power control parameters when transmissions are comprised in the second set of time and/or frequency resources.

2. The method of claim 1, wherein the second set of uplink power control parameters comprises one or more of:

UE-specific uplink power control parameters, UE-group specific uplink power control parameters, or cell-specific uplink power control parameters.

3. The method of claim 1, wherein the second set of time and/or frequency resources is comprised in a pattern.

4. The method of claim 1, wherein configuring the transmissions of the first type of signals using the second set of uplink power control parameters further comprises:

configuring the transmissions of the first type of signals using the second set of uplink power control parameters when one or more conditions are met, wherein a condition is determined by at least one of;

the transmissions purpose, radio environment, interference condition, geographical location, signal type, resource type.

5. The method of claim 1, wherein the first and second sets of time and/or frequency resources are comprised in the same subframe.

6. The method of claim 1, wherein the first and second sets of time and/or frequency resources are comprised in different subframes.

7. The method of claim 1, wherein at least one of the first and second set of time and/or frequency resources is comprised in a part of the system bandwidth.

8. The method of claim 1, wherein the obtaining of at least the second set of uplink power control parameters comprises one or a combination of:

receiving the second set of uplink power control parameters from a network node associated with the wireless device, configuring pre-defined values for the second set of uplink power control parameters, deriving the second set of uplink power control parameters based on a pre-defined rule, or deriving the second set of uplink power control parameters based on the first set of uplink power control parameters.

9. The method of claim 8, wherein the obtaining of the first set of uplink power control parameters and the second set of uplink power control parameters further comprises:

obtaining at least one of the first set of uplink power control parameters and the second set of uplink power control parameters by

receiving absolute values of an uplink received signal target, or

receiving relative values of the uplink received signal target, which relative values are derived from a reference value.

10. The method of claim 1, wherein at least some of the uplink power control parameters are pre-defined.

11. The method of claim 1, wherein the second set of time and/or frequency resources comprises restricted resources, which restricted resources of a cell overlap with low-interference time and/or frequency resources configured in an interfering neighbor cell;

and wherein the first set of time and/or frequency resources comprises any of;

restricted and non-restricted resources.

12. The method of claim 1, wherein the first type of signal is a physical uplink control channel, a physical uplink data channel, an uplink physical signal such as an uplink reference signal, or a physical random access channel.

13. The method of claim 1, further comprising:

transmitting to a network node a capability associated with the ability to support two sets of uplink power control parameters for uplink transmissions of the first type of signal.

14. The method of claim 1, further comprising:

transmitting the first type of signal using at least one of the first and second set of uplink power control parameters.

15. The method of claim 1, further comprising:

transmitting at least one of the first and second set of uplink power control parameters to a network node.

16. A wireless device for configuration of uplink power control, the wireless device comprises:

an obtaining circuit configured to obtain a first set of uplink power control parameters and a second set of uplink power control parameters for transmitting a first type of signals, wherein the first set of uplink power control parameters is associated with a first set of time and/or frequency resources, and wherein the second set of uplink power control parameters is associated with a second set of time and/or frequency resources;

a configuring circuit configured to configure transmissions of the first type of signals using the first set of uplink power control parameters when the transmissions are comprised in the first set of time and/or frequency resources; and

wherein

the configuring circuit further is configured to configure transmissions of the first type of signals using the second set of uplink power control parameters when transmissions are comprised in the second set of time and/or frequency resources.

17. The wireless device of claim 16, wherein the second set of uplink power control parameters comprises one or more of:

UE-specific uplink power control parameters, UE-group specific uplink power control parameters, or cell-specific uplink power control parameters.

18. The wireless device of claim 16, wherein the second set of time and/or frequency resources is comprised in a pattern.

19. The wireless device of claim 16, wherein the configuring circuit further is configured to configure the transmissions of the first type of signals using the second set of uplink power control parameters when one or more conditions are met, wherein a condition is determined by at least one of the transmissions purpose, radio environment, interference condition, geographical location, signal type, resource type.

20. The wireless device of claim 16, wherein the first and second sets of time and/or frequency resources are comprised in the same subframe.

21. The wireless device of claim 16, wherein the first and second sets of time and/or frequency resources are comprised in different subframes.

22. The wireless device of claim 16, wherein at least one of the first and second set of time and/or frequency resources is comprised in a part of the system bandwidth.

23. The wireless device of claim 16, wherein the obtaining circuit further is configured to receive the second set of uplink power control parameters from a network node associated with the wireless device, configure pre-defined values for the second set of uplink power control parameters, derive the second set of uplink power control parameters based on a pre-defined rule, or derive the second set of uplink power control parameters based on the first set of uplink power control parameters.

24. The wireless device of claim 23, wherein the obtaining circuit further is configured to obtaining at least one of the first set of uplink power control parameters and the second set of uplink power control parameters by

receiving absolute values of an uplink received signal target, or

receiving relative values of the uplink received signal target, which relative values are derived from a reference value.

25. The wireless device of claim 16, wherein at least some of the uplink power control parameters are pre-defined.

26. The wireless device of claim 16, wherein the second set of time and/or frequency resources comprises restricted resources, which restricted resources of a cell overlap with low-interference time and/or frequency resources configured in an interfering neighbor cell;

and wherein the first set of time and/or frequency resources comprises any of;

restricted and non-restricted resources.

27. The wireless device of claim 16, wherein the first signal is a physical uplink control channel, a physical uplink data channel, an uplink physical signal which may be an uplink physical reference signal, or a physical random access channel.

28. The wireless device of claim 16, further comprising:

a transmitting circuit configured to transmit to a network node a capability associated with the ability to support two sets of uplink power control parameters for uplink transmissions of the first type of signal.

29. The wireless device of claim 16, further comprising:

a transmitting circuit configured to transmit the first type of signal using at least one of the first and second set of uplink power control parameters.

30. The wireless device of claim 16, further comprising:

a transmitting circuit configured to transmit at least one of the first and second set of uplink power control parameters to a network node.

31. A method in a network node for configuration of uplink power control of a wireless device, the method comprises:

configuring or requesting configuration of a first set of uplink power control parameters for transmitting a first type of signals, which first set of uplink power control parameters is associated with a first set of time and/or frequency resources, wherein the first set of uplink power control parameters control of the wireless device'"'"'s transmissions of the first type of signals when the transmissions are comprised in the first set of time and/or frequency resources;

configuring or requesting configuration of a second set of uplink power control parameters for transmitting the first type of signals, which second set of uplink power control parameters is associated with a second set of time and/or frequency resources, wherein the second set of uplink power control parameters control of the wireless device'"'"'s transmissions of the first type of signals when the transmissions are comprised in the second set of time and/or frequency resources.

32. The method of claim 31, wherein the second set of uplink power control parameters comprises one or more of:

UE-specific uplink power control parameters, UE-group specific uplink power control parameters, or cell-specific uplink power control parameters.

33. The method of claim 31, wherein the second set of time and/or frequency resources is comprised in a pattern.

34. The method of claim 31, wherein the first and second sets of time and/or frequency resources are comprised in the same subframe.

35. The method of claim 31, wherein the first and second sets of time and/or frequency resources are comprised in different subframes.

36. The method of claim 31, wherein at least one of the first and second set of time and/or frequency resources is comprised in a part of the system bandwidth.

37. The method of claim 31, wherein the uplink power control parameters are pre-defined.

38. The method of claim 31, wherein the second set of time and/or frequency resources comprises restricted resources, which restricted resources of a cell overlap with low-interference time and/or frequency resources configured in an interfering neighbor cell;

and wherein the first set of time and/or frequency resources comprises any of;

restricted and non-restricted resources.

39. The method of claim 31, wherein the first signal is a physical uplink control channel, a physical uplink data channel, an uplink physical signal which may be an uplink physical reference signal, or a physical random access channel.

40. The method of claim 31, further comprising:

transmitting the first and/or second sets of uplink power control parameters to the wireless device and/or another network node.

41. The method of claim 31, further comprising:

receiving from the wireless device a capability associated with the ability to support two sets of uplink power control parameters for uplink transmissions of the first type of signal.

42. The method of claim 31, further comprising:

receiving the first type of signal transmitted by the wireless device.

43. A network node for configuration of uplink power control of a wireless device, the network node comprises:

a configuring or requesting configuration circuit configured to configure or to request configuration of a first set of uplink power control parameters for transmitting a first type of signals, which first set of uplink power control parameters is associated with a first set of time and/or frequency resources, wherein the first set of uplink power control parameters control the wireless device'"'"'s transmissions of the first type of signals when the transmissions are comprised in the first set of time and/or frequency resources; and

wherein

the configuring or requesting configuration circuit further is configured to configure or to request configuration a second set of uplink power control parameters for transmitting the first type of signals, which second set of uplink power control parameters is associated with a second set of time and/or frequency resources, wherein the second set of uplink power control parameters control of the wireless device'"'"'s transmissions of the first type of signals when the transmissions are comprised in the second set of time and/or frequency resources.

44. The network node of claim 43, wherein the second set of uplink power control parameters comprises one or more of:

UE-specific uplink power control parameters, UE-group specific uplink power control parameters, or cell-specific uplink power control parameters.

45. The network node of claim 43, wherein the second set of time and/or frequency resources is comprised in a pattern.

46. The network node of claim 43, wherein the first and second sets of time and/or frequency resources are comprised in the same subframe.

47. The network node of claim 43, wherein the first and second sets of time and/or frequency resources are comprised in different subframes.

48. The network node of claim 43, wherein at least one of the first and second set of time and/or frequency resources is comprised in a part of the system bandwidth.

49. The network node of claim 43, wherein the uplink power control parameters are pre-defined.

50. The network node of claim 43, wherein the second set of time and/or frequency resources comprises restricted resources, which restricted resources of a cell overlap with low-interference time and/or frequency resources configured in an interfering neighbor cell;

and wherein the first set of time and/or frequency resources comprises any of;

restricted and non-restricted resources.

51. The network node of claim 43, wherein the first type of signal is a physical uplink control channel, a physical uplink data channel, a physical uplink reference signal, or a physical random access channel.

52. The network node of claim 43, further comprising:

a transmitting circuit configured to transmit the first and/or second sets of uplink power control parameters to the wireless device and/or to another network node.

53. The network node of claim 43, further comprising:

a receiving circuit configured to receive from the wireless device a capability associated with the ability to support two sets of uplink power control parameters for uplink transmissions of the first type of signal.

54. The network node of claim 43, further comprising:

a receiving circuit configured to receive the first type of signal by the wireless device.