Method and system for auditing and correcting cellular antenna coverage patterns

• US 9,698,897 B2
• Filed: 12/14/2015
• Issued: 07/04/2017
• Est. Priority Date: 05/10/2012
• Status: Active Grant

• Current Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Harrang, Jeffrey Paul, Ryan, David James
• Primary Examiner(s): TAYLOR, NATHAN SCOTT
• Application Number:
  US14/968,810
• Publication Number:
  US 20160099771A1
• Time in Patent Office: 568 Days
• Field of Search: 455418
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

A method for adjusting a base station antenna may include receiving measured data including signal strength data for a signal received from the base station and location data from one or more user equipment, receiving planned radio coverage data, comparing the measured data with the planned radio coverage data, generating adjustment parameters based on a result of the comparison, and adjusting the antenna based on the adjustment parameters.

Claims

1. A method for auditing a base station in a wireless communication network to determine differences between stored parameters stored by the network and actual parameters of a misconfigured base station antenna, the method comprising:

receiving measured data from one or more user equipment, the measured data including signal strength data for a signal transmitted by the antenna and received by the one or more user equipment and location data for a location of the one or more user equipment when the signal transmitted by the antenna was received;

receiving the parameters for the antenna stored by the network;

comparing the measured data to the stored parameters;

generating adjustment parameters based on a result of the comparison;

adjusting the antenna using the adjustment parameters to correct the misconfiguration

adjusting the stored parameters according to the adjustment parameters; and

comparing the adjusted parameters to the measured data,

wherein comparing the measured data to the stored parameters includes calculating a fit value and comparing the fit value to a threshold value.

2. The method of claim 1, wherein the stored parameters are generated by a radio planning tool.

3. The method of claim 1, wherein the stored parameters are generated by a radio planning tool before the base station antenna is installed.

4. The method of claim 1, wherein the stored parameters include a boresight, a transmit power and a beamwidth of the antenna.

5. The method of claim 1, wherein the antenna is a steerable antenna, and wherein adjusting the antenna includes automatically adjusting the steerable antenna based on the adjustment parameters.

6. The method of claim 1, wherein comparing the adjusted parameters to the measured data includes calculating a second fit value and comparing the second fit value to the threshold value, and

wherein generating the adjustment parameters, adjusting the stored parameters, and comparing the adjusted stored parameters to the measured data are iterated until a match is determined.

7. The method of claim 1, wherein the fit value is determined by generating a planned grid including estimated signal strength values at latitude and longitude coordinates, and generating a measured data grid including measured signal strength values at latitude and longitude coordinates, where the fit value corresponds to differences between the planned grid and the measured data grid.

8. The method of claim 1, wherein the one or more user equipment is a plurality of cellular communication devices, each of which has a software application instructing the cellular communication device to transmit the measured data to the base station.

9. The method of claim 1, wherein the stored parameters include an identifier for the antenna, a position of the antenna, and a power level of the antenna.

10. A cellular communications system that corrects a misconfigured antenna of a base station, the system comprising:

the base station having the misconfigured antenna that transmits a signal to a plurality of user equipment and receives measured data from the plurality of user equipment, the measured data including signal strength data of the signal and location data for each of the plurality of user equipment where the signal was received;

a memory that stores parameters for the antenna, there being a difference between the stored parameters and actual parameters of the antenna; and

a processor that compares the measured data to the stored parameters by calculating a fit value and comparing the fit value to a threshold value, and generates adjustment parameters for adjusting the antenna to correct the misconfiguration,

wherein the system adjusts the stored parameters according to the adjustment parameters, and compares the adjusted parameters to the measured data.

11. The cellular communications system of claim 10, wherein the stored parameters include an identifier for the antenna, a position of the antenna, and a power level of the antenna.

12. The cellular communications system of claim 10, wherein the stored parameters are generated by a radio planning tool before the base station antenna is installed.

13. The cellular communications system of claim 10, wherein the stored parameters include a boresight, a transmit power and a beamwidth of the antenna.

14. The cellular communications system of claim 10, wherein the processor calculates the fit value by generating a planned grid including estimated signal strength values at latitude and longitude coordinates, and generating a measured data grid including measured signal strength values at latitude and longitude coordinates, where the fit value corresponds to differences between the planned grid and the measured data grid.

15. The cellular communications system of claim 10, wherein the antenna is a steerable antenna that is automatically adjusted according to the adjustment parameters.

16. The cellular communications system of claim 10, wherein the steerable antenna is iteratively adjusted until parameters measured by the user equipment match the stored parameters.