Apparatus and method for providing uplink interference coordination in a radio communication system

• US 8,200,263 B2
• Filed: 09/21/2007
• Issued: 06/12/2012
• Est. Priority Date: 09/21/2007
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Wei, Xusheng, Cai, Zhijun, Young, Gordon
• Primary Examiner(s): Wendell, Andrew
• Application Number:
  US11/859,144
• Publication Number:
  US 20090082053A1
• Time in Patent Office: 1,726 Days
• Field of Search: 455/452.1, 455/296, 455/452.2, 455/453, 455/501, 455/63.1, 455/67.11, 455/67.13, 455/69, 455/114.2
• US Class Current: 455/501
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

An apparatus and a method provide for uplink interference coordination in a radio communication system, such as a cellular communication system. Measurements are made at mobile stations associated with uplink-channel interference conditions. Reports are made to the network when a mobile station experiences interference conditions beyond a measurement threshold. If greater than a group-threshold number of mobile stations experience high levels of uplink-channel interference, communication resources are reallocated in compensation for the high interference conditions.

Claims

1. An apparatus for facilitating radio-communication-system uplink interference coordination in a cell, said apparatus being adapted to receive interference-related condition information for a plurality of mobile stations in the cell, the condition information in each mobile station of the plurality of mobile stations being measured by a condition measurer in the mobile stations, said apparatus comprising:

a detector configured to detect the interference-related condition information for the plurality of mobile stations in said cell, said detector including;

a counter for counting the number of mobile stations of the plurality of mobile stations with respective interference-related condition information exceeding a threshold value; and

a comparator for determining if said counter count of the number of mobile stations with interference-related condition information exceeding the threshold value exceeds a group threshold value; and

a selector configured to choose to reallocate communication resources in the cell in response to the determination by said comparator that said counter count of said number of mobile stations with interference-related condition information exceeding the threshold value exceeds said group threshold value.

2. The apparatus of claim 1, wherein the radio-communication-system information comprises SINR, Signal To Noise Ratio, information.

3. The apparatus of claim 1, wherein the radio-communication-system information comprises signal path loss information.

4. The apparatus of claim 1, wherein said selector is further configured to reallocate a frequency-related parameter.

5. The apparatus of claim 4, wherein said selector is further configured to reallocate a mobile-station assignation to one of a first frequency group and a second frequency group.

6. The apparatus of claim 5, wherein the first frequency group comprises a common frequency group.

7. The apparatus of claim 5, wherein the second frequency group comprises a non-common frequency group.

8. The apparatus of claim 1, wherein said selector is further configured to choose to reallocate communication resources in the cell responsive to a time threshold.

9. The apparatus of claim 1, further comprising a control signal generator configured to generate a control signal for reallocating communication resources within the cell.

10. A method for facilitating radio-communication-system uplink interference coordination in a cell having interference-related condition information being measured in each mobile station of a plurality of mobile stations in the cell, said method comprising:

counting a number of mobile stations of the plurality of mobile stations with respective interference-related condition information exceeding a threshold value;

comparing said counter count of the number of mobile stations with interference-related condition information to a group threshold value to determine when the count exceeds a group threshold value; and

selecting to update a resource allocation of communication resources in the cell in response to the determination that said counter count of said number of mobile stations with interference-related condition information exceeding the threshold value exceeds said group threshold value.

11. The method of claim 10, wherein a reallocation of communication resources comprises a frequency-related parameter.

12. The method of claim 10, wherein a reallocation of communication resources comprises assigning a mobile-station to one of a first frequency group and a second frequency group.

13. The method of claim 10, further comprising performing interference coordination.

14. The method of claim 10, further comprising generating a control signal for reallocating communication resources within the cell.

15. The method of claim 10, further comprising choosing reallocation of communication resources in the cell further responsive to a time threshold.