METHOD FOR MONITORING A METRIC FOR A BASE STATION'S DOWNLINK/UPLINK PATH UTILIZING A RADIO FREQUENCY SCANNER AND THE RADIO FREQUENCY SCANNER

• US 20140295769A1
• Filed: 03/29/2013
• Published: 10/02/2014
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent USA, Inc. (Nokia Corporation)
• Inventors: HODGETTS, Michael W., HUNG, Liang W.
• Granted Patent: US 9,225,439 B2
• Time in Patent Office: Days
• US Class Current: 455/67.11
• CPC Class Codes: H04B 17/17 Detection of non-compliance or faulty performance, e.g. response deviations H04B17/18 takes precedence
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements

Abstract

In one embodiment, the radio frequency scanner includes a detector configured to receive signals for transmission by the base station, and to detect a presence metric for each carrier expected in the received signals. A processor is configured to determine if the base station is operating improperly based on the detected presence metrics.

Claims

1. A radio frequency scanner for monitoring a base station, comprising:

a detector configured to receive signals for transmission by the base station, and the detector configured to detect a presence metric for each carrier expected in the received signals;

a processor configured to determine if the base station is operating improperly based on the detected presence metrics.

2. The radio frequency scanner of claim 1, wherein the detector is configured to receive signals coupled from output of at least one radio frequency filter prior to transmission.

3. The radio frequency scanner of claim 1, wherein

the detector is configured to receive at least one signal corresponding to each sector associated with the base station;

and

the processor is configured to determine if the base station is operating improperly with respect to each sector associated with the base station.

4. The radio frequency scanner of claim 3, wherein

the detector is configured to receive more than one signal corresponding to each sector of the base station, and each signal corresponding to a sector is associated with a different diversity of the sector;

and

the processor is configured to determine if the base station is operating improperly with respect to each diversity of each sector associated with the base station.

5. The radio frequency scanner of claim 1, wherein the presence metric is one of average envelop power, peak power, and a combination of average envelope power and peak power.

6. The radio frequency scanner of claim 1, further comprising:

a down converter configured to down convert the received signals and supply the down converted signals to the detector.

7. The radio frequency scanner of claim 1, further comprising:

an analog-to-digital converter configured to convert the received signals to digital baseband signals; and

wherein

the processor includes the detector.

8. The radio frequency scanner of claim 1, wherein the processor is configured to determine a number of detected carriers based on the presence metrics, and the processor is configured to determine whether the base station is operating improperly based on the determined number of detected carriers and an expected number of detected carriers.

9. The radio frequency scanner of claim 8, wherein the processor is configured to generate an alarm if the processor determines the base station is operating improperly.

10. The radio frequency scanner of claim 8, wherein the processor is configured to determine whether the base station is operating improperly based on the determined number of detected carriers for each sector associated with the base station and an expected number of detected carriers for each sector associated with the base station.

11. The radio frequency scanner of claim 8, wherein the processor is configured to perform a carrier detection operation to determine if a carrier is detected, the carrier detection operation being based on the presence metric associated with the carrier and a metric threshold.

12. The radio frequency scanner of claim 11, wherein the processor is configured to perform the carrier detection operation a number of times for each carrier, and the processor is configured to determine the carrier is detected if at least a threshold number of carrier detection operations produces a positive detection result.

13. The radio frequency scanner of claim 1, wherein the processor is configured to generate an alarm if the processor determines the base station is operating improperly.

14. The radio frequency scanner of claim 13, wherein the processor is configured to output the alarm from the radio frequency scanner.

15. A method of monitoring a base station, comprising:

obtaining signals for transmission by the base station;

detecting a presence metric for each carrier expected in the obtained signals; and

determining, by a processor, if the base station is operating improperly based on the detected presence metrics.

16. The method of claim 15, wherein the obtaining obtains the signals from output of at least one radio frequency filter prior to transmission.

17. The method of claim 15, wherein

obtaining obtains at least one signal corresponding to each sector associated with the base station;

and

the determining determines if the base station is operating improperly with respect to each sector associated with the base station.

18. The radio frequency scanner of claim 15, wherein the presence metric is one of average envelop power, peak power, and a combination of average envelope power and peak power.

19. The radio frequency scanner of claim 15, wherein the determining determines a number of detected carriers based on the presence metrics, and determines whether the base station is operating improperly based on the determined number of detected carriers and an expected number of detected carriers.

20. The radio frequency scanner of claim 15, further comprising:

generating an alarm if the determining determines the base station is operating improperly.