POWER CONTROL MESSAGING SCHEME

• US 20080220805A1
• Filed: 02/29/2008
• Published: 09/11/2008
• Est. Priority Date: 03/09/2007
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Dayal, Pranav, Ji, Tingfang
• Granted Patent: US 8,886,245 B2
• Time in Patent Office: Days
• US Class Current: 455/522
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 52/28 using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission

Abstract

In a power control messaging scheme for wireless communication, a wireless node sends vectorized information to another wireless node that uses the information to control its transmit power. In some aspects, the vectorized information may relate to interference observed at a wireless node. In some aspects, the vectorized information may relate to power adjustment offsets. In some aspects, the information may be vectorized based on one or more of different quality of service classes, different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes. In some aspects, a wireless node transmits a power control message via an uplink map in an assignment message.

Claims

1. A method of power control for a wireless communication, comprising:

identifying different quality of service classes associated with different traffic flows;

obtaining interference information associated with the different traffic flows;

generating different indications of interference for the different quality of service classes based on the obtained interference information; and

transmitting the different indications of interference associated with the different quality of service levels.

2. The method of claim 1, wherein the indications of interference comprise noise and interference values for an open loop power equation.

3. The method of claim 1, wherein each indication of interference comprises an incremental interference value.

4. The method of claim 1, further comprising identifying different classification factors associated with the different traffic flows, wherein:

the different classification factors comprise at least one of the group consisting of;

different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes; and

the different indications of interference are further generated based on the identified different classification factors.

5. The method of claim 4, wherein the different channel types comprise at least two of the group consisting of:

an acknowledgement channel, a CQI feedback channel, and a ranging channel.

6. The method of claim 4, wherein the permutation zones define wireless resource allocations based on at least one of the group consisting of:

a time dimension, a frequency dimension, a space dimension, and a code dimension.

7. The method of claim 1, wherein the indications of interference are transmitted via unicast messages.

8. The method of claim 1, wherein the traffic flows comprise uplink traffic flows.

9. The method of claim 1, wherein the different traffic flows are associated with different connections.

10. An apparatus for power control in a wireless communication, comprising:

a classifier configured to identify different quality of service classes associated with different traffic flows;

an interference controller configured to obtain interference information associated with the different traffic flows, and generate different indications of interference for the different quality of service classes based on the obtained interference information; and

a transmitter configured to transmit the different indications of interference associated with the different quality of service levels.

11. The apparatus of claim 10, wherein the indications of interference comprise noise and interference values for an open loop power equation.

12. The apparatus of claim 10, wherein:

the classifier is further configured to identify different classification factors associated with the different traffic flows;

the different classification factors comprise at least one of the group consisting of;

different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes; and

the interference controller is further configured to generate the different indications of interference based on the identified different classification factors.

13. The apparatus of claim 10, wherein the transmitter is further configured to transmit the indications of interference via unicast messages.

14. The apparatus of claim 10, wherein the traffic flows comprise uplink traffic flows.

15. An apparatus for power control in a wireless communication, comprising:

means for identifying different quality of service classes associated with different traffic flows;

means for obtaining interference information associated with the different traffic flows;

means for generating different indications of interference for the different quality of service classes based on the obtained interference information; and

means for transmitting the different indications of interference associated with the different quality of service levels.

16. The apparatus of claim 15, wherein the indications of interference comprise noise and interference values for an open loop power equation.

17. The apparatus of claim 15, wherein:

the means for identifying identifies different classification factors associated with the different traffic flows;

the different classification factors comprise at least one of the group consisting of;

different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes; and

the means for generating generates the different indications of interference further based on the identified different classification factors.

18. The apparatus of claim 15, wherein the means for transmitting further transmits the indications of interference via unicast messages.

19. The apparatus of claim 15, wherein the traffic flows comprise uplink traffic flows.

20. A computer-program product for power control in a wireless communication, comprising:

computer-readable medium comprising code for causing a computer to;

identify different quality of service classes associated with different traffic flows;

obtain interference information associated with the different traffic flows;

generate different indications of interference for the different quality of service classes based on the obtained interference information; and

transmit the different indications of interference associated with the different quality of service levels.

21. The computer-program product of claim 20, wherein the indications of interference comprise noise and interference values for an open loop power equation.

22. The computer-program product of claim 20, wherein:

the computer-readable medium further comprises code for causing the computer to identify different classification factors associated with the different traffic flows;

the different classification factors comprise at least one of the group consisting of;

different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes; and

the computer-readable medium further comprises code for causing the computer to generate the different indications of interference based on the identified different classification factors.

23. The computer-program product of claim 20, wherein the computer-readable medium further comprises code for causing the computer to transmit the indications of interference via unicast messages.

24. The computer-program product of claim 20, wherein the traffic flows comprise uplink traffic flows.

25. A method of power control for a wireless communication, comprising:

receiving different indications of interference associated with different quality of service classes;

identifying a quality of service class associated with a traffic flow;

selecting an indication of interference by determining which one of the received indications of interference is associated with the identified quality of service class; and

defining transmit power for the traffic flow based on the selected indication of interference.

26. The method of claim 25, wherein the indications of interference comprise noise and interference values for an open loop power equation.

27. The method of claim 25, wherein each indication of interference comprises an incremental interference value.

28. The method of claim 25, wherein:

the indications of interference are further associated with different classification factors comprising at least one of the group consisting of;

different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes;

the traffic flow is further associated with at least one of the different classification factors; and

the selection of the indication of interference further comprises determining which one of the received indications of interference is associated with the at least one of the different classification factors.

29. The method of claim 28, wherein the different channel types comprise at least two of the group consisting of:

an acknowledgement channel, a CQI feedback channel, and a ranging channel.

30. The method of claim 28, wherein the permutation zones define wireless resource allocations based on at least one of the group consisting of:

a time dimension, a frequency dimension, a space dimension, and a code dimension.

31. The method of claim 25, wherein the indications of interference are received via unicast messages.

32. The method of claim 25, wherein the traffic flow comprises an uplink traffic flow.

33. An apparatus for power control in a wireless communication, comprising:

a receiver configured to receive different indications of interference associated with different quality of service classes;

a classifier configured to identify a quality of service class associated with a traffic flow;

an indication selector configured to select an indication of interference by determining which one of the received indications of interference is associated with the identified quality of service class; and

a power controller configured to define transmit power for the traffic flow based on the selected indication of interference.

34. The apparatus of claim 33, wherein the indications of interference comprise noise and interference values for an open loop power equation.

35. The apparatus of claim 33, wherein:

the indications of interference are further associated with different classification factors comprising at least one of the group consisting of;

different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes;

the classifier is further configured to identify at least one of the different classification factors as being associated with the traffic flow; and

the indication selector is further configured to select the indication of interference by determining which one of the received indications of interference is associated with the at least one of the different classification factors.

36. The apparatus of claim 33, wherein the indications of interference are received via unicast messages.

37. The apparatus of claim 33, wherein the traffic flow comprises an uplink traffic flow.

38. An apparatus for power control in a wireless communication, comprising:

means for receiving different indications of interference associated with different quality of service classes;

means for identifying a quality of service class associated with a traffic flow;

means for selecting an indication of interference by determining which one of the received indications of interference is associated with the identified quality of service class; and

means for defining transmit power for the traffic flow based on the selected indication of interference.

39. The apparatus of claim 38, wherein the indications of interference comprise noise and interference values for an open loop power equation.

40. The apparatus of claim 38, wherein:

the indications of interference are further associated with different classification factors comprising at least one of the group consisting of;

different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes;

the means for identifying identifies at least one of the different classification factors as being associated with the traffic flow; and

the means for selecting selects the indication of interference by further determining which one of the received indications of interference is associated with the at least one of the different classification factors.

41. The apparatus of claim 38, wherein the indications of interference are received via unicast messages.

42. The apparatus of claim 38, wherein the traffic flow comprises an uplink traffic flow.

43. A computer-program product for power control in a wireless communication, comprising:

computer-readable medium comprising code for causing a computer to;

receive different indications of interference associated with different quality of service classes;

identify a quality of service class associated with a traffic flow;

select an indication of interference by determining which one of the received indications of interference is associated with the identified quality of service class; and

define transmit power for the traffic flow based on the selected indication of interference.

44. The computer-program product of claim 43, wherein the indications of interference comprise noise and interference values for an open loop power equation.

45. The computer-program product of claim 43, wherein:

the indications of interference are further associated with different classification factors comprising at least one of the group consisting of;

different assignments within a frame, different permutation zones, different channel differences, different locations of a wireless node, different channel types, different other sector interference values, and different assignment sizes;

the computer-readable medium further comprises code for causing the computer to identify at least one of the different classification factors as being associated with the traffic flow; and

the computer-readable medium further comprises code for causing the computer to select the indication of interference by determining which one of the received indications of interference is associated with the at least one of the different classification factors.

46. The computer-program product of claim 43, wherein the indications of interference are received via unicast messages.

47. The computer-program product of claim 43, wherein the traffic flow comprises an uplink traffic flow.

48. A method of power control for a wireless communication, comprising:

identifying different assignment locations within a frame for a given permutation zone;

obtaining interference information associated with the different assignment locations;

generating different indications of interference for the different assignment locations based on the obtained interference information; and

transmitting the different indications of interference associated with the different assignment locations.

49. A method of power control for a wireless communication, comprising:

receiving different indications of interference associated with different assignment locations within a frame for a given permutation zone;

identifying an assignment location associated with a traffic flow;

selecting an indication of interference by determining which one of the received indications of interference is associated with the identified assignment location; and

defining transmit power for the traffic flow based on the selected indication of interference.

50. A method of power control for a wireless communication, comprising:

identifying different classification factors associated with wireless communication traffic;

generating different power adjustment offsets based on the different classification factors; and

transmitting power control messages comprising the power adjustments offsets.

51. A method of power control for a wireless communication, comprising:

receiving different power adjustments offsets that are associated with different classification factors for wireless communication traffic;

identifying a classification factor associated with a traffic flow;

selecting a power adjustment offset by determining which one of the received power adjustments offsets is associated with the identified classification factor; and

adjusting transmit power for the traffic flow based on the selected power adjustment offset.

52. A method of power control for a wireless communication, comprising:

generating a power control message; and

transmitting the power control message in an assignment message for uplink transmissions, wherein the uplink transmissions are associated with a modulation coding scheme that has defined power levels.

53. A method of power control for a wireless communication, comprising:

receiving a power control message in an assignment message for uplink transmissions, wherein the uplink transmissions are associated with a modulation coding scheme that has defined power levels; and

defining transmit power for at least one of the uplink transmissions based on the received power control message.

54. A method of power control for a wireless communication, comprising:

generating a power control message comprising a reduced connection identifier, wherein the reduced connection identifier has a smaller size than an associated connection identifier; and

transmitting the power control message.

55. A method of power control for a wireless communication, comprising:

receiving a power control message comprising a reduced connection identifier, wherein the reduced connection identifier has a smaller size than an associated connection identifier; and

defining transmit power based on the received power control message.