Apparatus, method, computer program for communication and system thereof

• US 9,402,187 B2
• Filed: 06/30/2009
• Issued: 07/26/2016
• Est. Priority Date: 06/30/2009
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Technologies Oy (Nokia Corporation)
• Inventors: Lunden, Jari Petteri, Virtej, Elena
• Primary Examiner(s): Urban, Edward
• Assistant Examiner(s): Justus, Ralph H
• Application Number:
  US13/378,310
• Publication Number:
  US 20120094610A1
• Time in Patent Office: 2,583 Days
• Field of Search: 455/13, 455/11, 455/14, 455/114.2, 455/115.1, 455/115.2, 455/115.3
• US Class Current: 1/1
• 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 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

The invention is related to a method comprising: receiving a beacon signal from at least one transmitter; measuring total received interference power; determining strength of the received at least one beacon signal; determining at least one offset value by using the information the at least one beacon signal comprises; generating estimates of received interference power values transmitter-wise by using the determined at least one offset value and the determined strength of the received at least one beacon signal; combining the transmitter-wise estimated received interference power values for obtaining an estimated total received interference power; and subtracting the estimated total received interference power from the measured total received interference power for obtaining a residual interference power, the residual interference power originating from uncooperative devices.

Claims

1. An apparatus comprising:

at least one processor; and

at least one memory including computer program code;

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

receive a beacon signal from at least one transmitter;

measure total received interference power;

determine strength of the received at least one beacon signal;

determine at least one offset value by using the information the at least one beacon signal comprises;

generate the estimates of received interference power values transmitter-wise by using the determined at least one offset value;

generate estimates of received interference power values transmitter-wise by using the determined strength of the received at least one beacon signal, wherein the estimates of received interference power values correspond to interference received at the apparatus;

combine the transmitter-wise estimated received interference power values for obtaining an estimated total received interference power; and

subtract the estimated total received interference power from the measured total received interference power for obtaining a residual interference power, the residual interference power originating from uncooperative devices.

2. The apparatus of claim 1, wherein the beacon signal comprises information relating to at least one of:

transmission power and the at least one transmitter.

3. The apparatus of claim 1, wherein the offset is determined between a power of the transmitted beacon signal and an averaged transmission power of reserved resources of the at least one transmitter.

4. The apparatus of claim 1, wherein the residual interference power is determined for each of a plurality of resource units.

5. The apparatus of claim 4, wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the apparatus to perform:

determine an indication which of the plurality of resource units are being used using the information the at least one beacon signal comprises;

wherein the residual interference power is further determined for each of the plurality of resource units by using said indication.

6. The apparatus of 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 to perform:

recognize interference originating from uncooperative devices by comparing the residual interference with a predetermined threshold, and if the residual interference exceeds the threshold, information on interference situation is conveyed to a serving access point.

7. The apparatus of 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 to perform:

recognize interference originating from uncooperative devices by comparing the residual interference in a resource unit with a predetermined threshold; and

if the residual interference in a resource unit exceeds the threshold, marking the resource unit as suffering from uncooperative interference information.

8. The apparatus of claim 7, wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the apparatus to perform:

refrain from using resource units based on their marking as suffering from uncooperative interference information.

9. The apparatus of 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 to perform:

initiate a negotiation for interference moderation with at least one transmitter in response to said at least one transmitter having the worst transmitter-wise estimate of received interference power value.

10. A method comprising:

receiving at a receiver a beacon signal from at least one transmitter;

measuring total received interference power;

determining strength of the received at least one beacon signal;

determining at least one offset value by using the information the at least one beacon signal comprises;

generating the estimates of received interference power values transmitter-wise by using the determined at least one offset value;

generating estimates of received interference power values transmitter-wise by using the determined strength of the received at least one beacon signal, wherein the estimates of received interference power values correspond to interference received at the receiver;

combining the transmitter-wise estimated received interference power values for obtaining an estimated total received interference power; and

subtracting the estimated total received interference power from the measured total received interference power for obtaining a residual interference power, the residual interference power originating from uncooperative devices.

11. The method of claim 10, wherein the beacon signal comprises information relating to at least one of:

transmission power and the at least one transmitter.

12. The method of claim 10, further comprising:

determining the offset value between a transmission power of the beacon signal and an averaged transmission power of reserved resources of the at least one transmitter.

13. The method of claim 10, further comprising:

determining the residual interference power interference power for each of a plurality of resource units.

14. The method of claim 10, further comprising:

recognizing interference originating from uncooperative devices by comparing the residual interference with a predetermined threshold.

15. The method of claim 14, further comprising:

marking a resource unit as suffering from uncooperative interference information if the residual interference in a resource unit exceeds the threshold;

refraining from using resource units based on their marking as suffering from uncooperative interference information.

16. A computer program embodied on a non-transitory computer readable medium, configured to control a processor to perform a method, the method comprising:

receiving a beacon signal from at least one transmitter;

measuring total received interference power;

determining strength of the received at least one beacon signal;

determining at least one offset value by using the information the at least one beacon signal comprises;

generating the estimates of received interference power values transmitter-wise by using the determined at least one offset value;

generating estimates of received interference power values transmitter-wise by using the determined strength of the received at least one beacon signal, wherein the estimates of received interference power values correspond to interference received at the processor;

combining the transmitter-wise estimated received interference power values for obtaining an estimated total received interference power; and

subtracting the estimated total received interference power from the measured total received interference power for obtaining a residual interference power, the residual interference power originating from uncooperative devices.

17. The computer program of claim 16, further comprising:

marking a resource unit as suffering from uncooperative interference information if the residual interference in a resource unit exceeds a predetermined threshold.