Method of detecting illegal broadband radio signal

1. A method of detecting an illegal broadband radio signal, the method comprising:

receiving, by a reception unit, a surrounding radio signal at a place where an illegal radio signal is to be detected;

generating, by a detection unit, reference frequency information by configuring a reference multi-spectrum table in such a way as to generate a basic resolution spectrum by extracting a signal of a preset frequency band as basic resolution from the received surrounding radio signal and to generate a multiple resolution spectrum by extracting the signal of the preset frequency band as resolution of a positive integer multiple of the basic resolution from the received surrounding radio signal;

generating, by the detection unit, detection frequency information by configuring a detection multi-spectrum table in such a way as to generate a basic resolution spectrum by extracting the signal of the preset frequency band as basic resolution from a detection radio signal detected in the place where an illegal signal is to be detected and to generate a multiple resolution spectrum by extracting the signal of the preset frequency band as resolution of a positive integer multiple of the basic resolution from the detection radio signal; and

identifying, by a determination unit, whether a signal intensity value greater than a signal intensity value of the reference multi-spectrum table is present in the detection multi-spectrum table.

2. The method of claim 1 , further comprising identifying, by the determination unit, whether a signal intensity value greater than a signal intensity value of the basic resolution spectrum of the reference multi-spectrum table is present in the basic resolution spectrum of the detection multi-spectrum table by comparing a signal intensity value of the basic resolution spectrum of the detection multi-spectrum table with the signal intensity value of the basic resolution spectrum of the reference multi-spectrum table, when it is identified that a signal intensity value greater than a signal intensity value of the multiple resolution spectrum of the reference multi-spectrum table is present in the multiple resolution spectrum of the detection multi-spectrum table.

3. The method of claim 2 , further comprising identifying, by the determination unit, that an illegal radio signal has been detected in the detection radio signal when it is identified that a signal intensity value greater than the signal intensity value of the basic resolution spectrum of the reference multi-spectrum table is not present in the basic resolution spectrum of the detection multi-spectrum table by comparing the signal intensity value of the basic resolution spectrum of the detection multi-spectrum table with the signal intensity value of the basic resolution spectrum of the reference multi-spectrum table.

4. The method of claim 3 , further comprising storing the reference multi-spectrum table, the detection multi-spectrum table, and contents regarding the illegal radio signal identified to be detected by the determination unit in a storage unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

5. The method of claim 3 , further comprising displaying the contents regarding the illegal radio identified to be detected by the determination unit on a display unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

6. A method of detecting an illegal broadband radio signal, comprising steps of:

receiving, by a reception unit, a surrounding radio signal at a place where an illegal radio signal is to be detected;

generating, by a detection unit, reference frequency information by configuring a reference multi-spectrum table in such a way as to generate a basic resolution spectrum by extracting a signal of a preset frequency band as basic resolution from the received surrounding radio signal and to generate a plurality of multiple resolution spectra by extracting the signal of the preset frequency band as resolution of a plurality of positive integer multiples of the basic resolution from the received surrounding radio signal;

generating, by the detection unit, detection frequency information by configuring a detection multi-spectrum table in such a way as to generate a basic resolution spectrum by extracting the signal of the preset frequency band as basic resolution from a detection radio signal detected in the place where an illegal signal is to be detected and to generate a plurality of multiple resolution spectra by extracting the signal of the preset frequency band as resolution of a plurality of positive integer multiples of the basic resolution from the detection radio signal; and

identifying, by a determination unit, whether a signal intensity value greater than a signal intensity value of the reference multi-spectrum table is present in the detection multi-spectrum table.

7. The method of claim 6 , further comprising identifying, by the determination unit, whether a signal intensity value greater than a signal intensity value of a spectrum of a lower multiple right before a greatest multiple resolution of the reference multi-spectrum table is present in a spectrum of a lower multiple right before a greatest multiple resolution of the detection multi-spectrum table by comparing a signal intensity value of the spectrum of the lower multiple right before the greatest multiple resolution of the detection multi-spectrum table with the signal intensity value of the spectrum of the lower multiple right before the greatest multiple resolution of the reference multi-spectrum table, when it is identified that a signal intensity value greater than the signal intensity value of a greatest multiple resolution spectrum of the reference multi-spectrum table is present in the greatest multiple resolution spectrum of the detection multi-spectrum table.

8. The method of claim 7 , further comprising identifying, by the determination unit, that an illegal radio signal has been detected in the detection radio signal when it is identified that a signal intensity value greater than the signal intensity value of the spectrum of the lower multiple right before the greatest multiple resolution of the reference multi-spectrum table is not present in the spectrum of the lower multiple right before the greatest multiple resolution of the detection multi-spectrum table.

9. The method of claim 8 , further comprising storing the reference multi-spectrum table, the detection multi-spectrum table, and contents regarding the illegal radio signal identified to be detected by the determination unit in a storage unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

10. The method of claim 8 , further comprising displaying the contents regarding the illegal radio signal identified to be detected by the determination unit on a display unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

11. The method of claim 6 , further comprising identifying, by the determination unit, whether a signal intensity value greater than a signal intensity value of a spectrum of a lower multiple right before a greatest multiple resolution of the reference multi-spectrum table is present in a spectrum of a lower multiple right before a greatest multiple resolution of the detection multi-spectrum table by comparing a signal intensity value of the spectrum of the lower multiple right before the greatest multiple resolution of the detection multi-spectrum table with the signal intensity value of the spectrum of the lower multiple right before the greatest multiple resolution of the reference multi-spectrum table, when it is identified that a signal intensity value greater than the signal intensity value of the greatest multiple resolution spectrum of the reference multi-spectrum table is not present in the greatest multiple resolution spectrum of the detection multi-spectrum table.

12. The method of claim 11 , further comprising storing the reference multi-spectrum table, the detection multi-spectrum table, and contents regarding the illegal radio signal identified to be detected by the determination unit in a storage unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

13. The method of claim 11 , further comprising displaying the contents regarding the illegal radio signal identified to be detected by the determination unit on a display unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

14. The method of claim 11 , further comprising identifying, by the determination unit, whether a signal intensity value greater than a signal intensity value of a spectrum of a multiple second lower than the greatest multiple resolution of the reference multi-spectrum table is present in a spectrum of a multiple second lower than the greatest multiple resolution of the detection multi-spectrum table by comparing a signal intensity value of a spectrum of a multiple second lower than the greatest multiple resolution of the detection multi-spectrum table with the signal intensity value of the spectrum of the multiple second lower than the greatest multiple resolution of the reference multi-spectrum table, when it is identified that a signal intensity value greater than the signal intensity value of the spectrum of the lower multiple right before the greatest multiple resolution of the reference multi-spectrum table is present in the spectrum of the lower multiple right before the greatest multiple resolution of the detection multi-spectrum table.

15. The method of claim 14 , further comprising storing the reference multi-spectrum table, the detection multi-spectrum table, and contents regarding the illegal radio signal identified to be detected by the determination unit in a storage unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

16. The method of claim 14 , further comprising displaying the contents regarding the illegal radio signal identified to be detected by the determination unit on a display unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

17. The method of claim 14 , further comprising identifying, by the determination unit, that an illegal radio signal has been detected in the detection radio signal when it is identified that a signal intensity value greater than the signal intensity value of the spectrum of the multiple second lower than the greatest multiple resolution of the reference multi-spectrum table is not present in the spectrum of the multiple second lower than the greatest multiple resolution of the detection multi-spectrum table.

18. The method of claim 17 , further comprising storing the reference multi-spectrum table, the detection multi-spectrum table, and contents regarding the illegal radio signal identified to be detected by the determination unit in a storage unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.

19. The method of claim 17 , further comprising displaying the contents regarding the illegal radio signal identified to be detected by the determination unit on a display unit, when it is identified that the illegal radio signal has been detected in the detection radio signal.