Information exchange mechanisms to achieve network QoS in wireless cellular systems

• US 8,559,359 B2
• Filed: 04/28/2009
• Issued: 10/15/2013
• Est. Priority Date: 04/29/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Lott, Christopher G., Farajidana, Amir
• Primary Examiner(s): Ngo, Ricky
• Assistant Examiner(s): SAMUEL, DEWANDA A
• Application Number:
  US12/431,416
• Publication Number:
  US 20090268684A1
• Time in Patent Office: 1,631 Days
• Field of Search: 370/329, 370/318
• US Class Current: 370/318
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS

Abstract

Systems and methodologies are described that facilitate quality of service (QoS) differentiation and/or prioritization across a plurality of base stations included in wireless communication systems. The system can include components and/or devices that obtain resource allocations for cells controlled by a local base station, ascertains whether or not the resource allocations satisfy quality of service targets associated with data flows traversing through cells controlled by the local base station, and dispatches inter cell interference coordination indicators to remote base stations that have a proximate relationship defined by an X2 channel between the local base station and the remote base stations.

Claims

1. An apparatus operable in a wireless communication system, the apparatus comprising:

a processor, configured to obtain a current resource allocation for one or more cells controlled by a first base station, ascertain whether the current resource allocation satisfies a quality of service target associated with a data flow traversing through at least one of the one or more cells controlled by the first base station, dispatch an inter cell interference coordination indicator to a second base station, and utilize an inter cell interference coordination indicator received from the second base station to modify the current resource allocation to a cell controlled by the first base station to avoid interference with a cell serviced by the second base station; and

a memory coupled to the processor for persisting data.

2. The apparatus of claim 1, wherein the current resource allocation of the one or more cells controlled by the first base station based at least in part on the quality of service target associated with data flows traversing through at least one of the one or more cells.

3. The apparatus of claim 1, the processor further configured to dispatch the inter cell interference coordination indicator to the second base station when a state of congestion associated with a highest priority data flow associated with at least one of the one or more cells changes.

4. The apparatus of claim 1, the processor further configured to dispatch the inter cell interference coordination indicator to the second base station when a physical resource block allocation associated with at least one of the one or more cells changes.

5. The apparatus of claim 1, wherein the inter cell interference coordination indicator received from the second base station is utilized to mitigate data flow congestion experienced by at least one of the cells controlled by the first base station or the cell serviced by the second base station.

6. The apparatus of claim 1, wherein the inter cell interference coordination indicator received from the second base station is employed to adjust the current resource allocation to the cell controlled by the first base station by broadcasting at a first frequency where the cell serviced by the second base station broadcasts at a second frequency, the first frequency and second frequency are non-interfering.

7. The apparatus of claim 1, wherein the inter cell interference coordination indicator received from the second base station is utilized to adjust the current resource allocation to the cell controlled by the first base station by utilizing a first power level where the cell serviced by the second base station employs a second power level, the first power level and the second power level are distinct.

8. The apparatus of claim 1, wherein the inter cell interference coordination indicator received from the second base station is employed to identify a highest priority data flow traversing through at least one of a cell controlled by the first base station or a cell controlled by the second base station and based at least on the highest priority data flow identified, adjusting the current resource allocation to the cell that includes the highest priority data flow to broadcast at a highest power level or adjusting the current resource allocation to the cell that includes lower priority data flows to broadcast at lower power levels.

9. The apparatus of claim 1, wherein the inter cell interference coordination indicator received from the second base station is utilized to identify a highest priority data flow traversing through at least one of a cell controlled by the first base station or a cell controlled by the second base station and based at least on the highest identified priority flow, adjusting the current resource allocation to the cell that includes the highest priority data flow to broadcast at a first frequency and a highest power level or adjusting the current resource allocation to the cell that includes lower priority data flows to broadcast at the first frequency and at a lower power level.

10. The apparatus of claim 1, wherein the inter cell interference coordination indicator conveyed to the second base station through an X2 channel that connects the first base station with the second base station.

11. The apparatus of claim 10, wherein the X2 channel that connects the first base station with the second base station defines a neighbor relationship between the first base station and the second base station.

12. The apparatus of claim 1, the processor further configured to construct the inter cell interference coordination indicator, the inter cell interference coordination indicator includes at least one bit to convey at least one priority level associated with a data flow that is in a state of congestion in at least one of the one or more cells controlled by the first base station.

33. The apparatus of claim 1, wherein the inter cell interference coordination indicator indicates a priority of the data flow.

34. The apparatus of claim 33, wherein the priority of the data flow corresponds to the first base station.

35. The apparatus of claim 1, wherein the data flow is in a state of congestion.

13. A method utilized in wireless communication systems, the method comprising:

soliciting a current resource allocation for one or more cells controlled by a first base station;

ascertaining whether the current resource allocation satisfies a quality of service target associated with a data flow traversing through at least one of the one or more cells controlled by the first base station;

disseminating an inter cell interference coordination indicator to a second base station; and

employing an inter cell interference coordination indicator received from the second base station to modify the current resource allocation to a cell controlled by the first base station to avoid interference with a cell serviced by the second base station.

14. The method of claim 13, wherein the current resource allocation of the one or more cells controlled by the first base station based at least in part on the quality of service target associated with the data flow traversing through at least one of the one or more cells.

15. The method of claim 13, further comprising distributing the inter cell interference coordination indicator to the second base station when a state of congestion associated with a highest priority data flow associated with at least one of the one or more cells changes.

16. The method of claim 13, further comprising sending the inter cell interference coordination indicator to the second base station when a physical resource block allocation associated with at least one of the one or more cells changes.

17. The method of claim 13, wherein the disseminating the inter cell interference coordination indicator to the second base station includes utilizing an X2 channel that connects the first base station with the second base station.

18. The method of claim 13, further comprising building the inter cell interference coordination indicator, the inter cell interference coordination indicator includes at least one bit to convey at least one priority level associated with a data flow that is in a state of congestion in at least one of the one or more cells controlled by the first base station.

19. An apparatus operable in a wireless communication system, the apparatus comprising:

a memory that retains instructions related to obtaining a resource allocation for one or more cells controlled by a first base station, ascertaining whether the resource allocation satisfies a quality of service target associated with a data flow traversing through at least one of the one or more cells controlled by the first base station, dispatching an inter cell interference coordination indicator to a second base station, and employing an inter cell interference coordination indicator received from the second base station to modify the current resource allocation to a cell controlled by the first base station to avoid interference with a cell serviced by the second base station; and

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

20. The apparatus of claim 19, wherein the resource allocation of the one or more cells controlled by the first base station based at least in part on the quality of service target associated with the data flow traversing through at least one of the one or more cells.

21. The apparatus of claim 19, the memory further retains instructions related to conveying the inter cell interference coordination indicator to the second base station when a state of congestion associated with a lowest priority data flow associated with at least one of the one or more cells changes.

22. The apparatus of claim 19, the memory further retains instructions related to directing the inter cell interference coordination indicator to the second base station when a physical resource block allocation associated with at least one of the one or more cells changes.

23. The apparatus of claim 19, wherein the dispatching the inter cell interference coordination indicator to the second base station utilizes an X2 channel that connects the first base station with the second base station.

24. The apparatus of claim 19, the memory further retains instructions related to assembling the inter cell interference coordination indicator, the inter cell interference coordination indicator includes at least one bit to convey at least one priority level associated with a data flow that is in a state of congestion in at least one of the one or more cells controlled by the first base station.

25. An apparatus operable in wireless communication systems, the apparatus comprising:

means for obtaining a current resource allocation for one or more cells controlled by a first base station;

means for ascertaining whether the current resource allocation satisfies a quality of service target associated with a data flow traversing through at least one of the one or more cells controlled by the first base station;

means for dispatching an inter cell interference coordination indicator to a second base station; and

utilizing an inter cell interference coordination indicator received from the second base station to modify the current resource allocation to a cell controlled by the first base station to avoid interference with a cell serviced by the second base station.

26. The apparatus of claim 25, the means for dispatching conveys the inter cell interference coordination indicator to the second base station when a state of congestion associated with a highest priority data flow associated with at least one of the one or more cells changes.

27. The apparatus of claim 25, the means for dispatching communicates the inter cell interference coordination indicator to the second base station when a physical resource block allocation associated with at least one of the one or more cells changes.

28. The apparatus of claim 25, the means for dispatching utilizes an X2 channel that connects the first base station with the second base station to direct the inter cell interference coordination indicator to the second base station.

29. A computer-program product, comprising:

a non-transitory computer-readable medium comprising;

code for obtaining a current resource allocation for one or more cells controlled by a first base station;

code for ascertaining whether the current resource allocation satisfies a quality of service target associated with a data flow traversing through at least one of the one or more cells controlled by the first base station;

code for communicating an inter cell interference coordination indicator to a second base station; and

code for utilizing an inter cell interference coordination indicator received from the second base station to modify the current resource allocation to a cell controlled by the first base station to avoid interference with a cell serviced by the second base station.

30. The computer-program product of claim 29, wherein the code for communicating further comprises code for conveying the inter cell interference coordination indicator to the second base station when a state of congestion associated with a highest priority data flow associated with at least one of the one or more cells changes.

31. The computer-program product of claim 29, wherein the code for communicating further comprises code for sending the inter cell interference coordination indicator to the second base station when a physical resource block allocation associated with at least one of the one or more cells changes.

32. The computer-program product of claim 29, wherein the code for communicating further comprises code for employing an X2 channel that connects the first base station with the second base station to direct the inter cell interference coordination indicator to the second base station.