DYNAMIC IoT SETPOINTS AND INTERFERENCE CONTROL

• US 20100029211A1
• Filed: 07/31/2008
• Published: 02/04/2010
• Est. Priority Date: 07/31/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Teague, Edward Harrison
• Granted Patent: US 9,420,548 B2
• Time in Patent Office: Days
• US Class Current: 455/63.100
• CPC Class Codes: H04B 17/345 Interference values signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

Reverse link interference can be controlled by utilizing a dynamic and changeable IoT setpoint, which is a quantitative measurement of total interference received at a base station. The interference can occur when a mobile device in an adjacent sector is communicating over the reverse link. The IoT setpoint can be changed based on conditions occurring in the sector and/or scheduling information for the future. A fast up indicator (Up+) can be transmitted for reverse link interference, which allows the receiving device to take advantage of the fact that additional interference created will not affect the sector. An interference control action can be transmitted in an Other Sector Interference Bit (OSIB) channel over the air or over the backhaul. The interference control action can be determined as a function of the dynamic IoT setpoint.

Claims

1. A method for controlling reverse link interference with a dynamic interference setpoint, comprising:

establishing an interference setpoint associated with a serving sector;

measuring an interference value that is a function of the amount of reverse link interference experienced by the serving sector;

determining an action for interference control based on a comparison of the interference setpoint and the interference value; and

communicating the action to one or more devices in a neighboring sector, wherein the interference setpoint is a dynamic setpoint that is adjusted based on current parameters or predicted needs of the serving sector.

2. The method of claim 1, wherein communicating the action comprises setting a bit in an OSIB channel to indicate the action, wherein the OSIB bit is set based on known future scheduling information of the serving sector.

3. The method of claim 1, wherein the action is communicated to the neighboring sector over the air.

4. The method of claim 1, wherein the action is communicated to the neighboring sector over a backhaul channel.

5. The method of claim 1, wherein the action is a dynamic IoT setpoint with a fast up (Up+) indicator.

6. The method of claim 1, wherein the interference setpoint is an IoT setpoint and the interference value is an IoT value.

7. A wireless communications apparatus, comprising:

a memory that retains instructions related to establishing a dynamic interference setpoint based on current parameters or predicted needs of a serving sector, calculating an amount of interference received at the serving sector, comparing the interference setpoint with the amount of received interference to determine an action, and communicating the action to at least one device in a neighboring sector; and

a processor, coupled to the memory, configured to execute the instructions retained in the memory.

8. The apparatus of claim 7, wherein communicating the action comprises setting an OSIB channel bit based on known future scheduling information of the serving sector, wherein the OSIB channel bit indicates the action.

9. The apparatus of claim 7, wherein communicating the action comprises communicating to the at least one device in the neighboring sector over the air or a backhaul channel.

10. The apparatus of claim 7, wherein the action is represented as a dynamic IoT setpoint with a fast up (Up+) indicator.

11. The apparatus of claim 7, wherein the dynamic interference setpoint is an IoT setpoint and the amount of interference received is represented as an IoT value.

12. A wireless communications apparatus that controls reverse link interference, comprising:

means for establishing a dynamic interference setpoint based on current parameters or predicted needs of a serving sector;

means for calculating an amount of interference received at the serving sector;

means for determining an action based on a comparison of the interference setpoint with the amount of received interference; and

means for communicating the action to a neighboring sector.

13. The apparatus of claim 12, wherein the means for communicating the action sets at least one bit in an OSIB channel to “

1”

or “

0”

depending on the determined action.

14. The apparatus of claim 12, wherein the means for determining an action represents the action as a dynamic IoT setpoint with a fast up (Up+) indicator.

15. A computer program product, comprising:

a computer-readable medium comprising;

a first set of codes for causing a computer to establish a serving sector target interference setpoint that is dynamically adjusted based on current parameters or predicted needs of the serving sector;

a second set of codes for causing the computer to measure an amount of interference experienced by the serving sector, the measured amount of interference is an interference value;

a third set of codes for causing the computer to recommend an action to be taken based on a comparison of the target interference setpoint and the measured amount of interference; and

a fourth set of codes for causing the computer to communicate the recommended action to devices in one or more neighboring sectors, the communication is over the air or over a backhaul channel.

16. The computer program product of claim 15, wherein the fourth set of codes further causes the computer to set an OSIB channel bit based on the recommended action.

17. The computer program product of claim 15, wherein the measured amount of interference is denoted as an IoT value and the target interference setpoint is a dynamic IoT setpoint that comprises a down indicator, a up indicator, a fast down (Down+) indicator, and a fast up (Up+) indicator.

18. At least one processor configured to control interference in a serving sector, comprising:

a first module for measuring an amount of interference experienced by the service sector;

a second module for establishing a target interference setpoint that is dynamically adjusted based on current parameters or predicted need of the serving sector;

a third module for comparing the measured amount of interference and the target interference setpoint and recommending an action to be taken based on the comparison; and

a fourth module for setting a bit in an OSIB channel to indicate the recommended action and communicating the OSIB channel to a neighboring sector over the air or over a backhaul channel.

19. The at least one processor of claim 18, wherein the target interference setpoint is a dynamic IoT setpoint and the measured interference value is an IoT value.

20. A method for controlling reverse link interference in a wireless communications environment, comprising:

evaluating serving sector information and an amount of reverse link interference tolerable to the serving sector;

calculating an amount of interference experienced in the serving sector;

determining an interference indicator can be set to a fast up indicator (Up+) based on an evaluation of the tolerable amount of interference and the amount of interference experienced; and

transmitting an OSIB channel to one or more devices in an adjacent sector, wherein the OSIB channel includes the fast up indicator.

21. The method of claim 20, wherein the tolerable amount of reverse link interference is a function of at least one of requirements of one or more devices within the serving sector, traffic requirements occurring in the serving sector, known scheduling information, or combinations thereof.

22. The method of claim 20, wherein the fast up indicator allows a transmit power of at least one mobile device in the adjacent sector to be based on instantaneous load information in the serving sector.

23. The method of claim 20, wherein the OSIB channel is transmitted over the air or over a backhaul channel.

24. The method of claim 20, wherein the amount of reverse link interference tolerable to the serving sector is a dynamic IoT setpoint.

25. The method of claim 24, wherein the dynamic IoT setpoint is based on instantaneous load information in the serving sector.

26. A wireless communications apparatus, comprising:

a memory that retains instructions related to evaluating a serving sector and an amount of interference that can be tolerated by the serving sector, measuring an amount of interference experienced by the serving sector, determining an interference indicator can be set to a fast up indicator (Up+), and transmitting an OSIB channel that includes the fast up indicator to one or more adjacent sectors; and

a processor, coupled to the memory, configured to execute the instructions retained in the memory.

27. The wireless communications apparatus of claim 26, wherein the amount of interference that can be tolerated by the serving sector is a function of traffic requirements occurring in the serving sector, known scheduling information, requirements of one or more devices in the serving sector, or combinations thereof.

28. The wireless communications apparatus of claim 26, wherein the fast up (Up+) indicators notifies devices in the one or more adjacent sectors that a transmit power can be increased at a fast rate.

29. The wireless communications apparatus of claim 26, wherein the fast up (Up+) indicator is based on instantaneous load information in the serving sector.

30. The wireless communications apparatus of claim 26, wherein the OSIB channel is transmitted over the air or over a backhaul channel.

31. The wireless communications apparatus of claim 26, wherein the amount of interference that can be tolerated by the serving sector is represented as a dynamic IoT setpoint.

32. A wireless communications apparatus that controls reverse link interference, comprising:

means for evaluating a serving sector and an amount of interference that can be tolerated by the serving sector;

means for measuring an amount of interference experienced by the serving sector;

means for determining an interference indicator can be set to a fast up indicator (Up+); and

means for transmitting an OSIB channel that includes the fast up indicator to devices in one or more adjacent sectors.

33. The wireless communications apparatus of claim 32, wherein the amount of interference that can be tolerated by the serving sector is a function of one or more device requirements, traffic occurring in the serving sector, predicted scheduling information, or combinations thereof.

34. The wireless communications apparatus of claim 32, wherein the fast up indicator allows a transmit power of the devices in the one or more adjacent sectors to be based on instantaneous load information in the serving sector.

35. The wireless communications apparatus of claim 32, wherein the OSIB channel is transmitted over a backhaul channel or over the air.

36. The wireless communications apparatus of claim 32, wherein the amount of interference that can be tolerated by the serving sector is indicated by a dynamic IoT setpoint that is based on instantaneous load information in the serving sector.

37. A computer program product, comprising:

a computer-readable medium comprising;

a first set of codes for causing a computer to calculate an amount of interference received by a serving sector;

a second set of codes for causing the computer to evaluate the serving sector and an amount of interference that the serving sector can tolerate;

a third set of codes for causing the computer to determine a fast up indicator can be set based on the evaluation; and

a fourth set of codes for causing the computer to transmit an OSIB channel that includes the fast up indicator, the transmission occurs over the air or over a backhaul channel.

38. The computer program product of claim 37, wherein the amount of interference that the serving sector can tolerate is denoted as a dynamic IoT setpoint that is based on instantaneous load information in the serving sector.

39. The computer program product of claim 37, wherein the fast up indicator allows at least one device in an adjacent sector to increase a transmit power.

40. At least one processor configured to control reverse link interference, comprising:

a first module for evaluating information associated with a serving sector and an amount of interference that can be tolerated;

a second module for calculating an amount of interference experienced by the serving sector;

a third module for determining a bit in an OSIB channel can be set to a fast up indicator based on the evaluation and the amount of interference calculated; and

a fourth module for transmitting the OSIB channel to an adjacent sector over the air or over a backhaul.

41. The at least one processor of claim 40, wherein the amount of interference that can be tolerated is a function of at least one of requirements of one or more devices within the serving sector, traffic requirements occurring in the serving sector, known scheduling information, or combinations thereof

42. A method for reverse link interference management, comprising:

receiving an OSIB channel;

evaluating the OSIB channel for a fast up indicator (Up+);

quickly adjusting a transmit power to a higher level; and

transmitting a signal over a reverse link with the higher level transmit power.

43. The method of claim 42, the OSIB channel is received from a serving base station that received the OSIB channel over a backhaul.

44. The method of claim 42, the OSIB channel is received over the air from a neighboring sector.

45. A wireless communications apparatus, comprising:

a memory that retains instructions related to receiving an OSIB channel that includes a plurality of bits, evaluating the OSIB channel to determine if a bit related to a fast up indicator is set, adjusting a transmit power to a higher level if the bit related to the fast up indicator is set, and transmitting a signal at the higher transmit power level; and

a processor, coupled to the memory, configured to execute the instructions retained in the memory.

46. The wireless communications apparatus of claim 45, the OSIB channel is received from a neighboring sector over the air.

47. The wireless communications apparatus of claim 45, the OSIB channel is received from a serving base station that received the OSIB channel over a backhaul.

48. A wireless communications apparatus that manages reverse link interference, comprising:

means for receiving an OSIB channel over the air from a base station in an adjacent sector or from a serving base station that received the OSIB channel over a backhaul;

means for evaluating the OSIB channel to determine if a fast up indication bit in the channel is set;

means for rapidly adjusting a transmit power to a higher level if the fast up indication bit is set; and

means for transmitting a signal using the higher transmit power level.

49. A computer program product, comprising:

a computer-readable medium comprising;

a first set of codes for causing a computer to receive an OSIB channel;

a second set of codes for causing the computer to evaluate the OSIB channel for a fast up indicator;

a third set of codes for causing the computer to adjust a transmit power to a higher level at a rate that conforms to the fast up indicator; and

a fourth set of codes for causing the computer to transmit a signal over a reverse link, the signal is transmitted with the higher transmit power level.

50. At least one processor configured to manage reverse link interference, comprising:

a first module for receiving an OSIB channel that was sent over the air or over a backhaul;

a second module for identifying if the OSIB channel includes a fast up indicator;

a third module for quickly increasing a transmit power level if the fast up indicator is included in the OSIB channel; and

a fourth module for transmitting a signal at the increased transmit power level.