Method and Arrangement for Improved Radio Network Planning, Simulation and Analyzing in Telecommunications

• US 20100105399A1
• Filed: 04/04/2007
• Published: 04/29/2010
• Est. Priority Date: 04/04/2007
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Akerlund, Mats
• Granted Patent: US 8,768,368 B2
• Time in Patent Office: Days
• US Class Current: 455/446
• CPC Class Codes: H04W 16/18 Network planning tools

Abstract

In a method of enabling improved radio network planning for a predetermined geographical area in a telecommunication network, providing a plurality of data sampled at irregularly distributed measurement points, each data sample being represented by at least two geographical coordinates and at least one parameter value representative of a physical quantity associated with a radio network planning procedure, and providing a regular grid comprising a plurality of grid bins. For each such measurement point locating a subset of said grid bins within a predetermined distance from the measurement point and determining a respective contribution from the measurement point at each located grid bin in the subset, based at least on a respective distance between the data point and each grid bin and the at least one parameter value of the measurement point, wherein at least a subset of the grid bins each receive contributions from at least three associated measurement points referred to as contributing measurement points, and wherein each such grid bin is referred to as an active or triggered grid bin. Finally, determining, for each active or triggered grid bin a value of the parameter based on the determined respective contributions from the associated contributing measurement points.

Claims

1-10. -10. (canceled)

11. A method of enabling improved radio network planning for a predetermined geographical area in a telecommunication network, comprising the steps of:

providing a plurality of data sampled at irregularly distributed measurement points, each data sample being represented by at least two geographical coordinates and at least one parameter value representative of a physical quantity associated with a radio network planning procedure;

providing a regular grid comprising a plurality of grid bins;

for each said measurement point;

locating a subset of said grid bins within a predetermined distance from said measurement point;

determining a respective contribution from said measurement point at each located grid bin in said subset, based at least on a respective distance between said data point and each said grid bin and said at least one parameter value of said measurement point, wherein at least a subset of said grid bins each receive contributions from at least three associated measurement points referred to as contributing measurement points, and wherein each such grid bin is referred to as an active or triggered grid bin;

for each active or triggered grid bin;

determining a value of said parameter based on the determined respective contributions from the associated contributing measurement points.

12. The method according to claim 11, wherein said parameter value comprises at least one of a signal strength, an altitude measure, a geographical measure, a radio property measure.

13. The method according to claim 11, wherein the parameter value for each respective active or triggered grid bin is determined by an osculating plane based on the contributions from the contributing data points.

14. The method according to claim 11, comprising the further step of determining if the number of active grid bins is above a predetermined threshold.

15. The method according to claim 14, comprising the step of increasing the predetermined distance if the number of active grid bins is below said threshold.

16. The method according to claim 11, comprising the additional step of calculating a size and direction of an ellipsoid of confidence for the contributing measurement points for each grid point.

17. The method according to claim 16, comprising the step of determining if the grid point is within the thus calculated ellipsoid of confidence for its contributing points to prevent extrapolation of parameter values.

18. A radio network planning arrangement comprising one or more processing circuits configured to:

provide a plurality of data sampled at irregularly distributed measurement points, each data sample being represented by at least two geographical coordinates and at least one parameter value representative of a physical quantity associated with a radio network planning procedure;

provide a regular grid comprising a plurality of grid bins;

evaluate each said measurement point by;

locating a subset of said grid bins within a predetermined distance from said measurement point;

determining a respective contribution from said measurement point at each located grid bin in said subset, based at least on a respective distance between said data point and each said grid bin and said at least one parameter value of said measurement point, wherein at least a subset of said grid bins each receive contributions from at least three associated measurement points referred to as contributing measurement points, and wherein each such grid bin is referred to as an active or triggered grid bin; and

for each active or triggered grid bin;

determine a value of said parameter based on the determined respective contributions from the associated contributing measurement points.

19. The arrangement according to claim 18, wherein the one or more processing circuits are configured to determine if the number of active grid bins is above a predetermined threshold.

20. The arrangement according to claim 18, wherein the one or more processing circuits are configured to calculate a size and direction of an ellipsoid of confidence for the contributing measurement points for each grid point.