Frequency band state determining method and related device

1 . A method, applied to an apparatus, wherein the method comprises:

receiving a radio frequency signal;

determining an intermediate frequency signal based on an oscillation signal and the radio frequency signal, wherein the oscillation signal belongs to a frequency band;

performing first processing on the intermediate frequency signal comprising sampling the intermediate frequency signal to obtain a set of first sampling points and a plurality of second sampling points that are a subset of the set of first sampling points;

determining a first detection result by comparing a first reference value with a value of a ratio of a quantity of the second sampling points to a quantity of the first sampling points,

wherein each second sampling point is a sampling point having an amplitude greater than a second reference value, or having a power greater than a third reference value;

determining the first detection result indicates the frequency band is in a busy state;

performing second processing on the intermediate frequency signal to determine a second detection result that indicates whether the frequency band is in a second busy state,

wherein the second detection result indicates an operational state of the frequency band, and

wherein the operational state includes information characterizing interference of the frequency band; and

outputting the second detection result.

2 . The method according to claim 1 , wherein performing the second processing on the intermediate frequency signal is based on the ratio of the quantity of the second sampling points to the quantity of the first sampling points indicating the frequency band is in the busy state.

3 . The method according to claim 1 , wherein performing the second processing on the intermediate frequency signal, to determine the second detection result comprises:

performing two-dimensional Fourier transform on the intermediate frequency signal to obtain a first data result;

determining an amplitude or a power of the data result; and

comparing the amplitude of the data result with a fourth reference value, or comparing the power of the data result with fifth reference value, to obtain the second detection result characterizing interference in the frequency band.

4 . The method according to claim 3 , wherein the amplitude of the data result is compared with the fourth reference value and, based on the amplitude of the data result being greater than the fourth reference value, determining that the state of the frequency band is a first state; or based on the amplitude of the data result not being greater than the fourth reference value, determining the state of the frequency band is a second state.

5 . The method according to claim 3 , wherein the power of the first data result is compared with the eighth threshold and, based on determining the power of the first data result is greater than the eighth threshold, determining that the state of the first frequency band is a first state; or based on the power of the first data result not being greater than the eighth threshold, determining that the state of the first frequency band is a second state.

6 . The method according to claim 1 , wherein performing the second processing on the intermediate frequency signal to determine the second detection result characterizing interference in the frequency band comprises:

performing two-dimensional Fourier transform on the intermediate frequency signal to obtain data results; and

comparing a quantity of a subset of the data results with a fourth reference value, or comparing a ratio of the quantity of the subset of the data results to a quantity of the data results with a fifth reference value, to determine the second detection result,

wherein an amplitude of each third data result in the subset of data results is greater than a sixth reference value in the data results, or wherein a power value of each data result in the subset of data results is greater than a seventh reference value in the data results.

7 . The method according to claim 6 , wherein the operational state is a first operational state, and wherein determining the state of the frequency band based on the second detection result comprises:

based on the quantity of the subset of data results being greater than the fourth reference value, or based on the ratio of the quantity of the subset of data results to the quantity of the data results being greater than the fifth reference value, determining the state of the frequency band is the first operational state; or

based on the quantity of the subset of data results not being greater than the fourth reference value, or based on the ratio of the quantity of the subset of data results to the quantity of the data results not being greater than the fifth reference value, determining the state of the frequency band is a second operational state.

8 . The method according to claim 1 , wherein the oscillation signal is generated by an oscillator and comprises first and second parts, wherein the second part of the signal generated by the oscillator comprises a transmit signal associated with the first radio frequency signal.

9 . The method according to claim 1 , wherein the intermediate frequency signal is a first intermediate frequency signal, the method including:

performing a third processing on a second intermediate frequency signal, to determine a third detection result;

in response to determining the third detection results indicates the second frequency band is in an idle state, determining to skip performing of additional processing on the second intermediate frequency signal; and

skipping performing the additional processing on the second intermediate frequency signal.

10 . An apparatus comprising:

a memory configured to store instructions; and one or more processors coupled to the memory and configured to execute the instructions to cause the apparatus to:

receive a radio frequency signal;

determine an intermediate frequency signal based on an oscillation signal and the radio frequency signal, wherein the oscillation signal belongs to a frequency band;

perform first processing on the intermediate frequency signal comprising sampling the intermediate frequency signal to obtain a set of first sampling points and a plurality of second sampling points that are a subset of the set of first sampling points;

determine a first detection result by comparing a first reference value with a value of a ratio of a quantity of the second sampling points to a quantity of the first sampling points,

wherein each second sampling point is a sampling point having an amplitude greater than a second reference value, or having a power greater than a third reference value;

determine the first detection result indicates the frequency band is in a busy state;

perform second processing on the intermediate frequency signal to determine a second detection result in response to determining the frequency band is in the busy state,

wherein the second detection result indicates an operational state of the frequency band, and

wherein the operational state includes information characterizing interference of the frequency band; and

output the second detection result.

11 . The apparatus according to claim 10 , wherein performing the second processing on the first intermediate frequency signal to determine the second detection result comprises:

performing two-dimensional Fourier transform on the intermediate frequency signal to obtain a data result;

determining an amplitude or a power of the data result; and

comparing the amplitude of the data result with a fourth reference value, or comparing the power of the data result with fifth reference value, to obtain the second detection result characterizing interference in the frequency band.

12 . The apparatus according to claim 10 , wherein the intermediate frequency signal is a first intermediate frequency signal, and wherein the one or more processors, when executing the instructions stored in the memory, is further configured to cause the apparatus to:

perform a third processing on a second intermediate frequency signal, to determine a third detection result;

in response to determining the third detection results indicates the second frequency band is in an idle state, determine to skip performing of additional processing on the second intermediate frequency signal; and

skip performing the additional processing on the second intermediate frequency signal.

13 . A method, applied to an apparatus, wherein the method comprises:

receiving a radio frequency signal;

determining an intermediate frequency signal based on an oscillation signal and the radio frequency signal, wherein the oscillation signal belongs to a first frequency band;

performing first processing on the intermediate frequency signal to determine a first detection result, wherein the first processing comprises:

sampling the intermediate frequency signal to obtain a plurality of first sampling points; and

determining the first detection result by comparing a ratio of a quantity of second sampling points to a quantity of the plurality of the first sampling points with a fourth threshold,

wherein an amplitude of each of the quantity of second sampling points is greater than a fifth threshold in the plurality of the first sampling points, or

wherein power of each of the second sampling points is greater than a sixth threshold in the plurality of the first sampling points;

determining the first detection result indicates the first frequency band is in a busy state, including determining the ratio of the quantity of the second sampling points to the quantity of the plurality of first sampling points is greater than the fourth threshold;

in response to determining the first frequency band is in the busy state, performing second processing on the intermediate frequency signal to determine a second detection result; and

determining a state of the first frequency band based on the second detection result; and

in response to determining a state of the first frequency band based on the second detection result, outputting the determined state of the first frequency band.

14 . The method according to claim 13 , wherein determining the first detection result comprises:

determining an amplitude or a power of the intermediate frequency signal for each of the quantity of second sampling points; and

comparing the amplitude of each of the quantity of second sampling points with the fifth threshold, or comparing the power of each of the quantity of second sampling points with the sixth threshold, to determine the first detection result.

15 . The method according to claim 13 , wherein performing the second processing on the intermediate frequency signal, to determine the second detection result comprises:

performing two-dimensional Fourier transform on the intermediate frequency signal to obtain first data result;

determining an amplitude or a power of the first data result; and

determining the second detection result based on comparing the amplitude of the first data result with a seventh threshold, or comparing the power of the first data result with an eighth threshold,

or

performing two-dimensional Fourier transform on the intermediate frequency signal to obtain a second data result; and

determining the second detection result based on comparing a quantity of third data results with a ninth threshold, or comparing a ratio of the quantity of the third data results to a quantity of the second data results with a tenth threshold,

wherein each third data result is a data result whose amplitude is greater than an eleventh threshold in the second data results, or wherein each third data result is a data result whose power is greater than a twelfth threshold in the second data results.