System and method for self-optimization of interference coordination in communication systems

• US 8,812,046 B2
• Filed: 08/30/2012
• Issued: 08/19/2014
• Est. Priority Date: 03/30/2007
• Status: Expired due to Fees

• Current Assignee: WSOU Investments, LLC (WSOU Holdings, LLC)
• Original Assignee: Nokia Corporation
• Inventors: Huang, Leping, SHU, Kodu
• Primary Examiner(s): PHUONG, DAI
• Application Number:
  US13/599,850
• Publication Number:
  US 20120329460A1
• Time in Patent Office: 719 Days
• Field of Search: 455/428, 4554321-453, 370328-333
• US Class Current: 455/522
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

In accordance with aspects of the present invention, a method, apparatus and system are provided for self-optimization of interference coordination in communication systems. In one embodiment, the apparatus includes a measurement and reporting subsystem configured to perform measurements regarding a status of the apparatus and to provide a reliability report to a base station as a function thereof. The apparatus is configured to notify a strongest interferer about the status via the reliability report. In another embodiment, the apparatus includes a measurement report handler configured to process a reliability report received from a user equipment and an interference coordination subsystem configured to adjust interference coordination parameters based on the reliability report received from the user equipment.

Claims

1. An apparatus, comprising:

at least one processor; and

at least one memory including computer program code,

wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to

receive a reliability report; and

adapt, in response to said reliability report, a power mask by differently adapting at least two sub-bands of said power mask,

wherein the apparatus is configured to reduce transmission power or traffic when the reliability report indicates at least one poor or bad result,

wherein the apparatus is configured to increase transmission power or traffic when the reliability report indicates at least one good result, and

wherein the reliability report is received from an intra-frequency neighbor base station.

2. The apparatus of claim 1, wherein said sub-bands are allocated for data transmissions in different regions of a coverage area of said apparatus.

3. The apparatus of claim 2, wherein at least one region of said different regions is a cell-edge region or a cell-center region.

4. The apparatus as recited in claim 1, wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the apparatus at least to allocate uplink and downlink resources for said apparatus in accordance with said adapted power mask.

5. The apparatus as recited in claim 1, wherein the reliability report is received from a user equipment operating in a served area of another apparatus.

6. The apparatus as recited in claim 1, wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the apparatus at least to perform a handover decision sequence for a user equipment as a function of said reliability report.

7. The apparatus as recited in claim 1, wherein the reliability report is attached to a radio resource control message exchanged in a handover process.

8. The apparatus as recited in claim 1, wherein said reliability report includes at least one of intra-frequency handover measurements to detect a strongest interferer for a user equipment, a channel quality indicator report of a downlink of said apparatus, a radio link failure, a number of automatic retransmit requests/hybrid automatic retransmit requests of a handover command, or an average number of automatic retransmit requests/hybrid automatic retransmit requests when said user equipment is in an edge of an area served by said apparatus.

9. The apparatus as recited in claim 1, wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the apparatus at least to adapt, in response to said reliability report, at least one of an antenna pattern, a transmission frequency, a transmission time, or a level of traffic in a center sub-band of an area served by said apparatus.

10. A method, comprising:

receiving a reliability report; and

adapting, in response to said reliability report, a power mask by differently adapting at least two sub-bands of said power mask, wherein the adapting is performed by an apparatus,

wherein the apparatus is configured to reduce transmission power or traffic when the reliability report indicates at least one poor or bad result,

wherein the apparatus is configured to increase transmission power or traffic when the reliability report indicates at least one good result, and

wherein the reliability report is received from an intra-frequency neighbor base station.

11. The method of claim 10, further comprising:

allocating said sub-bands for data transmissions in different regions of a coverage area of said apparatus.

12. The method as recited in claim 10, further comprising:

allocating uplink and downlink resources for said apparatus in accordance with said adapted power mask.

13. The method as recited in claim 10, further comprising:

performing a handover decision sequence for a user equipment as a function of said reliability report.

14. The method as recited in claim 10, further comprising:

adapting, in response to said reliability report, at least one of an antenna pattern, a transmission frequency, a transmission time, or a level of traffic in a center sub-band of an area served by said apparatus.

15. A non-transitory computer-readable medium encoded with instructions that, when executed in hardware, perform a process, the process comprising:

receiving a reliability report; and

adapting, in response to said reliability report, a power mask by differently adapting at least two sub-bands of said power mask, wherein the adapting is performed by an apparatus,

wherein the apparatus is configured to reduce transmission power or traffic when the reliability report indicates at least one poor or bad result,

wherein the apparatus is configured to increase transmission power or traffic when the reliability report indicates at least one good result, and

wherein the reliability report is received from an intra-frequency neighbor base station.

16. The non-transitory computer-readable medium of claim 15, the process further comprising:

allocating said sub-bands for data transmissions in different regions of a coverage area of said apparatus.

17. The non-transitory computer-readable medium of claim 15, the process further comprising:

allocating uplink and downlink resources for said apparatus in accordance with said adapted power mask.

18. The non-transitory computer-readable medium of claim 15, the process further comprising:

performing a handover decision sequence for a user equipment as a function of said reliability report.

19. The non-transitory computer-readable medium of claim 15, the process further comprising:

adapting, in response to said reliability report, at least one of an antenna pattern, a transmission frequency, a transmission time, or a level of traffic in a center sub-band of an area served by said apparatus.