Apparatus, Method, Computer Program for Communication and System Thereof

• US 20120094610A1
• Filed: 06/30/2009
• Published: 04/19/2012
• Est. Priority Date: 06/30/2009
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Lunden, Jari Petteri, Virtej, Elena
• Granted Patent: US 9,402,187 B2
• Time in Patent Office: Days
• US Class Current: 455/67.13
• 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

1-21. -21. (canceled)

22. 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;

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

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.

23. The apparatus of claim 22, wherein the beacon signal comprises information relating to at least one of:

transmission power and the at least one transmitter.

24. The apparatus of claim 22, 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 at least one offset value by using the information the at least one beacon signal comprises; and

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

25. The apparatus of claim 24, 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.

26. The apparatus of claim 22, wherein the residual interference power is determined for each of a plurality of resource units.

27. The apparatus of claim 26, 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.

28. The apparatus of claim 22, 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.

29. The apparatus of claim 22, 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.

30. The apparatus of claim 29, 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.

31. The apparatus of claim 22, 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.

32. 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;

generating estimates of received interference power values transmitter-wise by using 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.

33. The method of claim 32, wherein the beacon signal comprises information relating to at least one of:

transmission power and the at least one transmitter.

34. The method of any of claims 32, further comprising:

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

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

35. The method of claim 34, 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.

36. The method of claim 32, further comprising:

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

37. The method of claim 32, further comprising:

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

38. The method of claim 37, 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.

39. A computer program embodied on a 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;

generating estimates of received interference power values transmitter-wise by using 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.

40. The computer program of claim 39, further comprising:

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

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

41. The computer program of claim 39, further comprising:

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