CN109495132B - Frequency point selection method and device, communication equipment, storage medium and computer equipment - Google Patents
Frequency point selection method and device, communication equipment, storage medium and computer equipment Download PDFInfo
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- CN109495132B CN109495132B CN201811378180.1A CN201811378180A CN109495132B CN 109495132 B CN109495132 B CN 109495132B CN 201811378180 A CN201811378180 A CN 201811378180A CN 109495132 B CN109495132 B CN 109495132B
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- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The application relates to a frequency point selection method, a device, communication equipment, a storage medium and computer equipment, which are used for acquiring a first interference spectrum from a current frequency point of the communication equipment to a first boundary frequency point in an equipment communication frequency band, wherein the first boundary frequency point is a highest frequency point or a lowest frequency point; selecting a target frequency point meeting a preset condition according to the first interference spectrum, and acquiring a second interference spectrum from the target frequency point to the first boundary frequency point; and when the second interference frequency spectrum is better than the first interference frequency spectrum, updating the target frequency point to the current frequency point. When frequency hopping is carried out, the interference frequency spectrum of each frequency point in the current communication frequency band is obtained in advance, and the frequency hopping frequency point is determined according to the signal interference condition of each frequency point in the interference frequency spectrum, so that the packet error rate and the packet loss rate can be effectively reduced, and the communication quality is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for selecting a frequency point, a communication device, a storage medium, and a computer device.
Background
With the development of communication technology, the application of wireless communication is more and more extensive. For different wireless communication technologies, there are corresponding communication bands, such as an ISM Band (Industrial Scientific Medical Band), which is mainly opened for Industrial, Scientific and Medical institutions, and can be used without authorization, and conventional wireless communication methods, such as a wireless local area network (IEEE 802.11b/IEEE 802.11g), bluetooth, ZigBee, and the like, can operate in the ISM Band, thereby causing the Band to be very crowded, and causing severe interference between different communication networks of different communication protocols or the same communication protocol.
In order to solve the above problems, the prior art generally adopts an Adaptive Frequency Hopping (AFH) technique when performing wireless communication (such as bluetooth), and during the communication, when the communication is in a receiving state, the interfered Frequency Hopping point is automatically avoided to the maximum extent, and when the communication is in a transmitting state, the minimum transmitting power and the minimum intercepted probability that a receiving party can receive are ensured, so that high-quality communication can be maintained on an interference-free Frequency Hopping channel. However, the adaptive frequency hopping technology determines frequency hopping points by counting error code rates and packet loss numbers of frequency points that have been used, and when a frequency hopping point can be selected as an unused frequency point, the probability of error packets and packet loss in wireless communication is still high.
Disclosure of Invention
In view of the above, it is necessary to provide a frequency point selection method, device, communication device, storage medium, and computer device that can improve communication quality and reduce packet error rate and packet loss rate.
A frequency point selection method comprises the following steps:
acquiring a first interference spectrum from a current frequency point of communication equipment to a first boundary frequency point in an equipment communication frequency band, wherein the first boundary frequency point is a highest frequency point or a lowest frequency point;
selecting a target frequency point meeting a preset condition according to the first interference spectrum, and acquiring a second interference spectrum from the target frequency point to the first boundary frequency point;
and when the second interference frequency spectrum is better than the first interference frequency spectrum, updating the target frequency point to be the current frequency point.
In one embodiment, the target frequency point meeting the preset condition is selected, and the target frequency point comprises any one of the following two items:
the first item: taking a frequency point with the lowest carrier-to-noise ratio as a target frequency point, wherein the carrier-to-noise ratio is the carrier-to-noise ratio of interference;
the second term is: and taking a frequency point which is lower than the preset threshold value and is closest to a second boundary frequency point as a target frequency point, wherein the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band.
In one embodiment, when a frequency point with the lowest carrier-to-noise ratio is taken as a target frequency point, if the carrier-to-noise ratio of the target frequency point in the second interference spectrum is lower than that of a current frequency point, it is determined that the second interference spectrum is better than the first interference spectrum;
when the frequency point with the carrier-to-noise ratio lower than a preset threshold and closest to the second boundary frequency point is taken as a target frequency point, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the first interference frequency spectrum as a first number, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the second interference frequency spectrum as a second number, and if the second number is larger than the first number, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum.
In one embodiment, after the target frequency point is updated to the current frequency point, the method further includes:
and adding the second interference frequency spectrum to a frequency hopping list corresponding to the communication equipment.
In one embodiment, after the target frequency point is updated to the current frequency point, the method further includes: and adjusting the communication signal transmitting power of the communication equipment according to the carrier-to-noise ratio of the current frequency point.
In one embodiment, after the target frequency point is updated to the current frequency point, the method further includes: and adjusting the communication signal receiving gain of the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point.
A frequency point selection device, comprising: the device comprises a frequency spectrum acquisition module, a frequency point determination module and a frequency point updating module;
the frequency spectrum acquisition module is used for acquiring a first interference frequency spectrum from a current frequency point of communication equipment to a first boundary frequency point in an equipment communication frequency band, wherein the first boundary frequency point is a highest frequency point or a lowest frequency point;
the frequency point determining module is used for selecting a target frequency point meeting a preset condition according to the first interference spectrum;
the frequency spectrum acquisition module is further used for acquiring a second interference frequency spectrum from the target frequency point to the first boundary frequency point;
and the frequency point updating module is used for updating the target frequency point to the current frequency point when the second interference frequency spectrum is superior to the first interference frequency spectrum.
A communication device, comprising: a signal receiving device, a signal processing device and a communication control device;
the signal receiving device is used for receiving communication signals and sending the communication signals to the signal processing device;
the signal processing device is used for obtaining a first interference frequency spectrum from a current frequency point to a first boundary frequency point in an equipment communication frequency band according to the communication signal and sending the first interference frequency spectrum to the communication control device, wherein the first boundary frequency point is the highest frequency point or the lowest frequency point;
the communication control device is used for selecting a target frequency point meeting a preset condition according to the first interference frequency spectrum;
the signal processing device is further used for obtaining a second interference frequency spectrum from the target frequency point to the first boundary frequency point;
and the communication control device is also used for updating the target frequency point to the current frequency point when the second interference frequency spectrum is better than the first interference frequency spectrum.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the above method when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
According to the frequency point selection method, the device, the communication equipment, the storage medium and the computer equipment, a first interference spectrum from a current frequency point of the communication equipment to a first boundary frequency point in an equipment communication frequency band is obtained, wherein the first boundary frequency point is the highest frequency point or the lowest frequency point; selecting a target frequency point meeting a preset condition according to the first interference spectrum, and acquiring a second interference spectrum from the target frequency point to the first boundary frequency point; and when the second interference frequency spectrum is better than the first interference frequency spectrum, updating the target frequency point to the current frequency point. When frequency hopping is carried out, the interference frequency spectrum of each frequency point in the current communication frequency band is obtained in advance, and the frequency hopping frequency point is determined according to the signal interference condition of each frequency point in the interference frequency spectrum, so that the packet error rate and the packet loss rate can be effectively reduced, and the communication quality is improved.
Drawings
Fig. 1 is a schematic flow chart of a frequency point selection method in an embodiment;
fig. 2 is a schematic diagram illustrating selection of a target frequency point according to an interference spectrum in an embodiment;
fig. 3 is another schematic diagram illustrating selecting a target frequency point according to an interference spectrum in an embodiment;
fig. 4 is a schematic flowchart of a frequency point selection method in another embodiment;
fig. 5 is a schematic structural diagram of a frequency point selection device in an embodiment;
FIG. 6 is a schematic diagram of the structure of a communication device in one embodiment;
fig. 7 is a schematic structural diagram of a bluetooth communication device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The frequency point selection method provided by the invention can be suitable for a wireless communication method, or a wireless network, or wireless communication equipment/device/system, which needs frequency hopping processing to improve the communication quality, and can determine a proper frequency hopping frequency point by acquiring an interference frequency spectrum in advance in the wireless communication process so as to achieve the purpose of improving the communication quality. For convenience of understanding, in the embodiments of the present application, bluetooth communication is used as an application object, and the frequency point selection method of the present application is explained. It can be understood that the application object of the frequency point selection method of the present application is not limited to bluetooth communication.
In one embodiment, as shown in fig. 1, a method for selecting a frequency point is provided, which is applied to a bluetooth communication device as an example, and includes the following steps:
step S100, a first interference spectrum from a current frequency point of the communication equipment to a first boundary frequency point in an equipment communication frequency band is obtained, wherein the first boundary frequency point is a highest frequency point or a lowest frequency point.
For bluetooth communication equipment, the operating frequency band is the ISM frequency band, and the regulations For the ISM frequency band in different countries are not uniform, For example, in the united states, the ISM frequency band includes three frequency bands of 902-. It will be appreciated that when the method is applied to other communications, the device communications band may also be other communications bands.
When the communication equipment needs to carry out frequency hopping or before the communication equipment carries out normal communication, a first interference frequency spectrum from a current frequency point of the communication equipment to a first boundary frequency point in an equipment communication frequency band is firstly acquired. The current frequency point may be the highest frequency point, the lowest frequency point or an intermediate frequency point between the highest frequency point and the lowest frequency point, and correspondingly, the first interference spectrum may be an interference spectrum from the highest frequency point to the lowest frequency point, an interference spectrum from the lowest frequency point to the highest frequency point, an interference spectrum from the intermediate frequency point to the highest frequency point or an interference spectrum from the intermediate frequency point to the lowest frequency point. For example: when the current frequency point is 2402MHz, acquiring an interference frequency spectrum from 2402MHz to 2480 MHz; when the current frequency point is 2480MHz, acquiring an interference frequency spectrum from 2480MHz to 2402 MHz; when the current frequency point is 2450MHz, acquiring an interference spectrum from 2450MHz to 2480MHz or from 2450MHz to 2402 MHz.
And S200, selecting a target frequency point meeting a preset condition according to the first interference frequency spectrum, and acquiring a second interference frequency spectrum from the target frequency point to the first boundary frequency point.
After the first interference frequency spectrum is obtained, a target frequency point meeting preset conditions is selected according to the signal interference condition of each frequency point displayed by the frequency spectrum, and the target frequency point is a standby frequency point serving as a next frequency hopping frequency point (current frequency point). And after the target frequency point is determined, acquiring a second interference spectrum from the target frequency point to the first boundary frequency point.
When the target frequency point is determined, the number of target frequency points is not limited to one, and may be many. For example: in bluetooth communication, there is a concept of adaptive frequency hopping points, where an adaptive frequency hopping point refers to a group of frequency hopping points shared by both transceivers in bluetooth communication, and the group of frequency hopping points is obtained by a host computer according to the current transceiving environment, and the number of adaptive frequency hopping points in bluetooth communication needs to be at least 20, so that in bluetooth communication, when determining a target frequency point, the number of target frequency points is at least 20.
And step S300, when the second interference frequency spectrum is better than the first interference frequency spectrum, updating the target frequency point to the current frequency point.
After the second interference frequency spectrum is obtained, the first interference frequency spectrum and the second interference frequency spectrum are compared and analyzed, when the second interference frequency spectrum is better than the first interference frequency spectrum, the interference condition corresponding to the target frequency point is shown to be better than the interference condition corresponding to the current frequency point, and the target frequency point can be subjected to frequency hopping at the moment, so that the target frequency point is updated to be a new current frequency point. And when the second interference spectrum is inferior to the first interference spectrum, that is, the interference condition corresponding to the target frequency point is inferior to the interference condition corresponding to the current frequency point, and at this time, the previous current frequency point can still be maintained.
The embodiment provides a frequency point selection method, which is used for acquiring an interference spectrum of each frequency point in a current communication frequency band in advance during frequency hopping, and determining a frequency hopping frequency point according to a signal interference condition of each frequency point in the interference spectrum, so that a packet error rate and a packet loss rate can be effectively reduced, and communication quality is improved.
In one embodiment, the selecting of the target frequency point meeting the preset condition in step S200 includes any one of the following two items:
the first item: and taking the frequency point with the lowest carrier-to-noise ratio as a target frequency point.
The second term is: and taking a frequency point which has a carrier-to-noise ratio lower than a preset threshold and is closest to a second boundary frequency point as a target frequency point, wherein the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band.
In this embodiment, the carrier-to-noise ratio is a carrier-to-noise ratio of interference, and the presence of "CNR" in a spectrum portion corresponding to a frequency point indicates that the frequency point has interference of other signals, and a higher CNR indicates that the interference generated by other signals is larger. Therefore, when selecting a target frequency point, a frequency point with a low CNR needs to be selected as the target frequency point.
As shown in fig. 2, which is an exemplary diagram of a first interference spectrum, when a target frequency point is determined by selecting a first method, a frequency point with the lowest carrier-to-noise ratio is selected as the target frequency point according to the first interference spectrum. Specifically, when a plurality of target frequency points need to be determined, after the frequency point a1 with the lowest carrier-to-noise ratio is selected, the frequency point a2 with the carrier-to-noise ratio higher than the frequency point a1 and lower than other unselected frequency points is selected, then the frequency point A3 with the carrier-to-noise ratio higher than the frequency point a2 and lower than other unselected frequency points is selected, and so on until the number of the selected target frequency points meets the requirement of the number of frequency hopping frequency points.
As shown in fig. 3, when the target frequency point is determined by the method of selecting the second term, a frequency point which has a carrier-to-noise ratio lower than a preset threshold and is closest to the second boundary frequency point is selected as the target frequency point according to the first interference spectrum. The signal interference corresponding to the preset threshold of the carrier-to-noise ratio can be considered to be within an acceptable range. Specifically, setting the preset threshold as CNRs, the first boundary frequency point as the highest frequency point, and the second boundary frequency point as the lowest frequency point, and then sequentially selecting the frequency points B1, B2, and B3 … with the carrier-to-noise ratio lower than CNRs as the target frequency points in the order from left to right until the number of the selected target frequency points meets the requirement of the number of frequency hopping frequency points.
In the embodiment, the frequency point with a low carrier-to-noise ratio is selected as the target frequency point through the interference spectrum, so that the minimum signal interference of the target frequency point can be ensured.
In one embodiment, when the frequency point with the lowest carrier-to-noise ratio is taken as the target frequency point, if the carrier-to-noise ratio of the target frequency point in the second interference spectrum is lower than the carrier-to-noise ratio of the current frequency point, it is determined that the second interference spectrum is better than the first interference spectrum.
Specifically, the lowest carrier-to-noise ratio of the current frequency point in the first interference spectrum is set to be CNR1, the lowest carrier-to-noise ratio of the target frequency point in the second interference spectrum is set to be CNR2, and if CNR2 is less than CNR1, it is indicated that the signal interference condition of the target frequency point is better than that of the current frequency point, that is, the second interference spectrum is better than the first interference spectrum, and the target frequency point is better than the current frequency point, so that the target frequency point can be used as a frequency hopping point.
When the frequency point with the carrier-to-noise ratio lower than the preset threshold and closest to the second boundary frequency point is taken as a target frequency point, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the first interference frequency spectrum as a first number, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the second interference frequency spectrum as a second number, and if the second number is larger than the first number, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum.
Specifically, the number of frequency points in the first interference spectrum, where the carrier-to-noise ratio is lower than the preset threshold, is N1, the number of frequency points in the second interference spectrum, where the carrier-to-noise ratio is lower than the preset threshold, is N2, and if N2> N1, it is indicated that, in the second interference spectrum, the number of frequency points in which signal interference is within the acceptable range is greater, that is, the signal interference condition of the frequency points in the second interference spectrum is better than that of the frequency points in the first interference spectrum, therefore, it can be considered that the second interference spectrum is better than the first interference spectrum, the target frequency point is better than the current frequency point, and the target frequency point can be used as a frequency.
According to the embodiment, whether the target frequency point is better than the current frequency spectrum is determined through the interference frequency spectrum, so that the target frequency point can be used as a frequency hopping frequency point when the signal interference of the target frequency point is lower, and the communication quality is improved.
In an embodiment, as shown in fig. 4, after the target frequency point is updated to the current frequency point, the method for selecting a frequency point further includes: and step S400, adding the second interference frequency spectrum to a frequency hopping list corresponding to the communication equipment.
And after the second interference frequency spectrum is determined to be superior to the first interference frequency spectrum, updating the target frequency point to the current frequency point. When the communication equipment performs frequency hopping, the frequency hopping is selected according to the frequency points in the frequency hopping list and the corresponding interference frequency spectrums, so that after the current frequency point is updated, the updated current frequency point and the corresponding interference frequency spectrums are added to the frequency hopping list corresponding to the communication equipment, the communication equipment can select the communication frequency points according to the frequency hopping list, and the communication quality is ensured.
In an embodiment, referring to fig. 4, after the target frequency point is updated to the current frequency point, the frequency point selection method further includes: and S500, adjusting the communication signal transmitting power of the communication equipment according to the carrier-to-noise ratio of the current frequency point.
Specifically, when the communication device is in the transmitting state, the communication signal transmitting power of the communication device is adjusted according to the carrier-to-noise ratio of the current frequency point by taking the lowest receivable power of other devices communicating with the communication device as a standard, so that the other devices can receive the communication packet sent by the communication device, and the situations of packet loss and packet error are avoided.
In an embodiment, referring to fig. 4, after the target frequency point is updated to the current frequency point, the frequency point selection method further includes: and step S600, adjusting the communication signal receiving gain of the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point.
Specifically, other frequency points within the preset range of the current frequency point may be determined in a communication manner, for example, for bluetooth communication, the preset range may be ± 5 MHz.
When the communication equipment is in a receiving state, because other frequency points near the current frequency point can interfere with the receiving of the communication signals, when the receiving gain is adjusted, the carrier-to-noise ratios of other frequency points near the current frequency point are also considered, the gain distribution of each level of signal receiving circuit of the communication equipment is adjusted, and the communication equipment can be ensured to normally receive communication packets sent by other equipment.
It should be understood that, although the steps in the flowcharts of fig. 1 and 4 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1 and 4 may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 5, there is provided a frequency point selection apparatus, including: a spectrum obtaining module 110, a frequency point determining module 120 and a frequency point updating module 130.
The spectrum obtaining module 110 is configured to obtain a first interference spectrum from a current frequency point of the communication device to a first boundary frequency point in a device communication frequency band, where the first boundary frequency point is a highest frequency point or a lowest frequency point.
The frequency point determining module 120 is configured to select a target frequency point meeting a preset condition according to the first interference spectrum.
The spectrum obtaining module 110 is further configured to obtain a second interference spectrum from the target frequency point to the first boundary frequency point.
The frequency point updating module 130 is configured to update the target frequency point to the current frequency point when the second interference spectrum is better than the first interference spectrum.
In one embodiment, the frequency point determining module 120 is further configured to perform any one of the following two items: the first item: and taking the frequency point with the lowest carrier-to-noise ratio as a target frequency point. The second term is: and taking a frequency point which has a carrier-to-noise ratio lower than a preset threshold and is closest to a second boundary frequency point as a target frequency point, wherein the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band.
In one embodiment, the frequency point updating module 130 is further configured to: and when the frequency point with the lowest carrier-to-noise ratio is taken as the target frequency point, if the carrier-to-noise ratio of the target frequency point in the second interference frequency spectrum is lower than that of the current frequency point, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum.
When the frequency point with the carrier-to-noise ratio lower than the preset threshold and closest to the second boundary frequency point is taken as a target frequency point, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the first interference frequency spectrum as a first number, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the second interference frequency spectrum as a second number, and if the second number is larger than the first number, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum.
In one embodiment, the frequency point updating module 130 is further configured to: and adding the second interference frequency spectrum to a frequency hopping list corresponding to the communication equipment.
In one embodiment, as shown in fig. 6, there is provided a communication apparatus including: signal receiving apparatus 210, signal processing apparatus 220, and communication control apparatus 230.
The signal receiving device 210 is used for receiving the communication signal and sending the communication signal to the signal processing device 220.
The signal processing device 220 is configured to obtain a first interference spectrum from the current frequency point to a first boundary frequency point in the device communication frequency band according to the communication signal, and send the first interference spectrum to the communication control device 230, where the first boundary frequency point is a highest frequency point or a lowest frequency point.
The communication control device 230 is configured to select a target frequency point meeting a preset condition according to the first interference spectrum.
The signal processing device 220 is further configured to obtain a second interference spectrum from the target frequency point to the first boundary frequency point.
The communication control device 230 is further configured to update the target frequency point to the current frequency point when the second interference spectrum is better than the first interference spectrum.
In one embodiment, the communication control device 230 is further configured to: and adjusting the communication signal transmitting power of a signal transmitting device in the communication equipment according to the carrier-to-noise ratio of the current frequency point.
In one embodiment, the communication control device 230 is further configured to: and adjusting the communication signal receiving gain of the signal receiving device 210 in the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point.
For specific limitations of the frequency point selection device and the communication control device, reference may be made to the above limitations of the frequency point selection method, which is not described herein again. All or part of the modules in the frequency point selection device and the communication control device can be realized by software, hardware and combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In an embodiment, a bluetooth communication is taken as an example to explain a frequency point selection method described in the embodiments of the present application.
As shown in fig. 7, a schematic structural diagram of a bluetooth communication device includes: an Analog transmit RF circuit 310, an Analog receive RF circuit 320, an Analog to Digital Converter (ADC) 330, a mathematical analysis circuit 340, and a control circuit 350. The control module determines a frequency hopping frequency point according to the interference frequency spectrum, controls the transmitting power of the analog transmitting RF circuit and the receiving gain of the analog receiving RF circuit, and accordingly can improve the performance of a transmitting link and a receiving link and reduce the packet loss rate and the error rate of Bluetooth communication.
The working process of each circuit in the bluetooth communication equipment is as follows:
(1) before normal communication of Bluetooth, setting the current communication frequency point of the Bluetooth communication equipment as the lowest frequency point 2402 MHz;
(2) setting a communication link of the Bluetooth communication equipment to be in a receiving state, and receiving a communication signal by an analog receiving RF circuit and sending the communication signal to an analog-to-digital conversion circuit;
(3) the analog-to-digital conversion circuit sends output data corresponding to the communication signal to a mathematical analysis circuit, and the mathematical analysis circuit performs analysis processing on the output data, such as Fast Fourier Transform (FFT) or other processing, to obtain a first interference frequency spectrum corresponding to 2402MHz-2480MHz, and sends the first interference frequency spectrum to the control circuit;
(4) the control circuit updates the first interference frequency spectrum to a frequency hopping list and takes the first interference frequency spectrum as a current frequency spectrum;
(5) selecting a frequency point with a carrier-to-noise ratio meeting a preset requirement as a target frequency point according to the current interference frequency spectrum;
(6) the mathematical analysis circuit obtains a second interference frequency spectrum from the target frequency point to 2480MHz, and at the moment, the frequency hopping list is not updated;
(7) the control circuit performs comparative analysis according to the current interference frequency spectrum and the second interference frequency spectrum, and if the second interference frequency spectrum is better than the current interference frequency spectrum, the target frequency point is used as the current communication frequency hopping frequency point, and the target frequency point and the second interference frequency spectrum are updated to a frequency hopping list;
(8) when the Bluetooth communication equipment is in a transmitting state, the control circuit adjusts the transmitting power of the analog transmitting RF circuit by taking the lowest energy receiving power of the connected equipment as a standard according to the carrier-to-noise ratio of the current communication frequency hopping frequency point;
when the Bluetooth communication equipment is in a receiving state, the control circuit adjusts the receiving gain of each stage of circuit of the analog receiving RF circuit according to the carrier-to-noise ratio of the current communication frequency hopping frequency point and the nearby frequency points;
(9) and (5) repeatedly executing the steps (5) to (8) according to actual needs.
It should be noted that, in step (8), the judgment criterion for adjusting the transmission power and the reception gain may be a carrier-to-noise ratio, or may be other Indicator information such as a Signal Strength Indicator (RSSI) or other Indicator information that is obtained through a spectrum.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program: the method comprises the steps of obtaining a first interference spectrum from a current frequency point of communication equipment to a first boundary frequency point in an equipment communication frequency band, wherein the first boundary frequency point is a highest frequency point or a lowest frequency point. And selecting a target frequency point meeting a preset condition according to the first interference spectrum, and acquiring a second interference spectrum from the target frequency point to the first boundary frequency point. And when the second interference frequency spectrum is better than the first interference frequency spectrum, updating the target frequency point to the current frequency point.
In one embodiment, the processor, when executing the computer program, further implements either: the first item: and taking the frequency point with the lowest carrier-to-noise ratio as a target frequency point, wherein the carrier-to-noise ratio is the carrier-to-noise ratio of interference. The second term is: and taking a frequency point which has a carrier-to-noise ratio lower than a preset threshold and is closest to a second boundary frequency point as a target frequency point, wherein the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and when the frequency point with the lowest carrier-to-noise ratio is taken as the target frequency point, if the carrier-to-noise ratio of the target frequency point in the second interference frequency spectrum is lower than that of the current frequency point, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum. When the frequency point with the carrier-to-noise ratio lower than the preset threshold and closest to the second boundary frequency point is taken as a target frequency point, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the first interference frequency spectrum as a first number, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the second interference frequency spectrum as a second number, and if the second number is larger than the first number, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and adding the second interference frequency spectrum to a frequency hopping list corresponding to the communication equipment.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and adjusting the communication signal transmitting power of the communication equipment according to the carrier-to-noise ratio of the current frequency point. In one embodiment, the processor, when executing the computer program, further performs the steps of: and adjusting the communication signal receiving gain of the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: the method comprises the steps of obtaining a first interference spectrum from a current frequency point of communication equipment to a first boundary frequency point in an equipment communication frequency band, wherein the first boundary frequency point is a highest frequency point or a lowest frequency point. And selecting a target frequency point meeting a preset condition according to the first interference spectrum, and acquiring a second interference spectrum from the target frequency point to the first boundary frequency point. And when the second interference frequency spectrum is better than the first interference frequency spectrum, updating the target frequency point to the current frequency point.
In one embodiment, the computer program when executed by the processor further implements either: the first item: and taking the frequency point with the lowest carrier-to-noise ratio as a target frequency point, wherein the carrier-to-noise ratio is the carrier-to-noise ratio of interference. The second term is: and taking a frequency point which has a carrier-to-noise ratio lower than a preset threshold and is closest to a second boundary frequency point as a target frequency point, wherein the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band.
In one embodiment, the computer program when executed by the processor further performs the steps of: and when the frequency point with the lowest carrier-to-noise ratio is taken as the target frequency point, if the carrier-to-noise ratio of the target frequency point in the second interference frequency spectrum is lower than that of the current frequency point, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum. When the frequency point with the carrier-to-noise ratio lower than the preset threshold and closest to the second boundary frequency point is taken as a target frequency point, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the first interference frequency spectrum as a first number, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the second interference frequency spectrum as a second number, and if the second number is larger than the first number, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum.
In one embodiment, the computer program when executed by the processor further performs the steps of: and adding the second interference frequency spectrum to a frequency hopping list corresponding to the communication equipment.
In one embodiment, the computer program when executed by the processor further performs the steps of: and adjusting the communication signal transmitting power of the communication equipment according to the carrier-to-noise ratio of the current frequency point.
In one embodiment, the computer program when executed by the processor further performs the steps of: and adjusting the communication signal receiving gain of the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, the computer program can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A frequency point selection method is characterized by comprising the following steps:
acquiring a first interference spectrum from a current frequency point of communication equipment to a first boundary frequency point in an equipment communication frequency band, wherein the first boundary frequency point is a highest frequency point or a lowest frequency point; the current frequency point is any one of a highest frequency point, a lowest frequency point or an intermediate frequency point between the highest frequency point and the lowest frequency point; the first interference spectrum is any one of an interference spectrum from a highest frequency point to a lowest frequency point, an interference spectrum from a lowest frequency point to a highest frequency point, an interference spectrum from an intermediate frequency point to a highest frequency point or an interference spectrum from an intermediate frequency point to a lowest frequency point;
selecting a target frequency point meeting a preset condition according to the first interference spectrum, and acquiring a second interference spectrum from the target frequency point to the first boundary frequency point; the preset condition is the frequency point with the lowest carrier-to-noise ratio or the frequency point which is lower than a preset threshold value and is closest to a second boundary frequency point; the number of the target frequency points comprises at least one; when the second interference frequency spectrum is better than the first interference frequency spectrum, updating the target frequency point to a current frequency point;
adjusting the communication signal receiving gain of the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point;
the selection of the target frequency points meeting the preset conditions comprises any one of the following two items:
the first item: taking a frequency point with the lowest carrier-to-noise ratio as a target frequency point, wherein the carrier-to-noise ratio is the carrier-to-noise ratio of interference; when at least two target frequency points are needed, the frequency point with the lowest carrier-to-noise ratio is used as a target frequency point, and the method comprises the following steps:
after the frequency point A1 with the lowest carrier-to-noise ratio is selected, selecting the frequency point A2 with the carrier-to-noise ratio higher than the frequency point A1 and lower than other unselected frequency points, and then selecting the frequency point A3 with the carrier-to-noise ratio higher than the frequency point A2 and lower than other unselected frequency points until the number of the selected target frequency points meets the requirement of the number of frequency hopping frequency points;
the second term is: taking a frequency point which is lower than a preset threshold value and is closest to a second boundary frequency point as a target frequency point, wherein the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band;
when at least two target frequency points are needed, the frequency point which is lower than the preset threshold value and is closest to a second boundary frequency point is taken as the target frequency point, and the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band, and the method comprises the following steps:
setting a preset threshold value as CNRs, a first boundary frequency point as a highest frequency point and a second boundary frequency point as a lowest frequency point, and sequentially selecting frequency points with carrier-to-noise ratios lower than the CNRs as target frequency points from left to right until the number of the selected target frequency points meets the requirement of the number of frequency hopping frequency points;
the communication equipment is a bluetooth communication equipment, and the adjusting of the communication signal receiving gain of the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point comprises the following steps:
when the Bluetooth communication equipment is in a transmitting state, the control circuit adjusts the transmitting power of the analog transmitting RF circuit by taking the lowest energy receiving power of the connected equipment as a standard according to the carrier-to-noise ratio of the current communication frequency hopping frequency point;
when the Bluetooth communication equipment is in a receiving state, the control circuit adjusts the receiving gain of each stage of circuit of the analog receiving RF circuit according to the carrier-to-noise ratio of the current communication frequency hopping frequency point and the nearby frequency points.
2. The frequency point selection method according to claim 1, characterized in that the method further comprises: in the Bluetooth communication, when the target frequency points are determined, the number of the target frequency points is at least 20.
3. The frequency point selection method according to claim 1,
when the frequency point with the lowest carrier-to-noise ratio is taken as a target frequency point, if the carrier-to-noise ratio of the target frequency point in the second interference frequency spectrum is lower than that of the current frequency point, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum;
when the frequency point with the carrier-to-noise ratio lower than a preset threshold and closest to the second boundary frequency point is taken as a target frequency point, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the first interference frequency spectrum as a first number, counting the number of the frequency points with the carrier-to-noise ratio lower than the preset threshold in the second interference frequency spectrum as a second number, and if the second number is larger than the first number, determining that the second interference frequency spectrum is superior to the first interference frequency spectrum.
4. The method for selecting frequency points according to claim 1, wherein after the target frequency point is updated to the current frequency point, the method further comprises:
and adding the second interference frequency spectrum to a frequency hopping list corresponding to the communication equipment.
5. The method for selecting frequency points according to claim 1, wherein after the target frequency point is updated to the current frequency point, the method further comprises: and adjusting the communication signal transmitting power of the communication equipment according to the carrier-to-noise ratio of the current frequency point.
6. A frequency point selection device, comprising: the device comprises a frequency spectrum acquisition module, a frequency point determination module and a frequency point updating module;
the frequency spectrum acquisition module is used for acquiring a first interference frequency spectrum from a current frequency point of communication equipment to a first boundary frequency point in an equipment communication frequency band, wherein the first boundary frequency point is a highest frequency point or a lowest frequency point; the current frequency point is any one of a highest frequency point, a lowest frequency point or an intermediate frequency point between the highest frequency point and the lowest frequency point; the first interference spectrum is any one of an interference spectrum from a highest frequency point to a lowest frequency point, an interference spectrum from a lowest frequency point to a highest frequency point, an interference spectrum from an intermediate frequency point to a highest frequency point or an interference spectrum from an intermediate frequency point to a lowest frequency point;
the frequency point determining module is used for selecting a target frequency point meeting a preset condition according to the first interference spectrum; the preset condition is the frequency point with the lowest carrier-to-noise ratio or the frequency point which is lower than a preset threshold value and is closest to a second boundary frequency point; the number of the target frequency points comprises at least one;
the frequency spectrum acquisition module is further used for acquiring a second interference frequency spectrum from the target frequency point to the first boundary frequency point;
the frequency point updating module is used for updating the target frequency point to a current frequency point when the second interference frequency spectrum is superior to the first interference frequency spectrum; adjusting the communication signal receiving gain of the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point;
the frequency point updating module is also used for adjusting the transmitting power of the analog transmitting RF circuit by the control circuit according to the carrier-to-noise ratio of the current communication frequency hopping frequency point by taking the lowest receivable power of the connected equipment as the standard when the Bluetooth communication equipment is in a transmitting state;
when the Bluetooth communication equipment is in a receiving state, the control circuit adjusts the receiving gain of each stage of circuit of the analog receiving RF circuit according to the carrier-to-noise ratio of the current communication frequency hopping frequency point and the nearby frequency points;
the frequency point determining module is also used for taking the frequency point with the lowest carrier-to-noise ratio as a target frequency point, wherein the carrier-to-noise ratio is the carrier-to-noise ratio of interference; when at least two target frequency points are needed, the frequency point with the lowest carrier-to-noise ratio is used as a target frequency point, and the method comprises the following steps:
after the frequency point A1 with the lowest carrier-to-noise ratio is selected, selecting the frequency point A2 with the carrier-to-noise ratio higher than the frequency point A1 and lower than other unselected frequency points, and then selecting the frequency point A3 with the carrier-to-noise ratio higher than the frequency point A2 and lower than other unselected frequency points until the number of the selected target frequency points meets the requirement of the number of frequency hopping frequency points; or
Taking a frequency point which is lower than a preset threshold value and is closest to a second boundary frequency point as a target frequency point, wherein the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band;
when at least two target frequency points are needed, the frequency point which is lower than the preset threshold value and is closest to a second boundary frequency point is taken as the target frequency point, and the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band, and the method comprises the following steps:
setting a preset threshold value as CNRs, setting a first boundary frequency point as a highest frequency point and a second boundary frequency point as a lowest frequency point, and sequentially selecting frequency points with carrier-to-noise ratios lower than the CNRs as target frequency points from left to right until the number of the selected target frequency points meets the requirement of the number of frequency hopping frequency points.
7. A communication device, comprising: a signal receiving device, a signal processing device and a communication control device;
the signal receiving device is used for receiving communication signals and sending the communication signals to the signal processing device;
the signal processing device is used for obtaining a first interference frequency spectrum from a current frequency point to a first boundary frequency point in an equipment communication frequency band according to the communication signal and sending the first interference frequency spectrum to the communication control device, wherein the first boundary frequency point is the highest frequency point or the lowest frequency point; the current frequency point is any one of a highest frequency point, a lowest frequency point or an intermediate frequency point between the highest frequency point and the lowest frequency point; the first interference spectrum is any one of an interference spectrum from a highest frequency point to a lowest frequency point, an interference spectrum from a lowest frequency point to a highest frequency point, an interference spectrum from an intermediate frequency point to a highest frequency point or an interference spectrum from an intermediate frequency point to a lowest frequency point;
the communication control device is used for selecting a target frequency point meeting a preset condition according to the first interference frequency spectrum; the preset condition is the frequency point with the lowest carrier-to-noise ratio or the frequency point which is lower than a preset threshold value and is closest to a second boundary frequency point; the number of the target frequency points comprises at least one;
the signal processing device is further used for obtaining a second interference frequency spectrum from the target frequency point to the first boundary frequency point; the target frequency point comprises any one of the following two items:
the first item: taking a frequency point with the lowest carrier-to-noise ratio as a target frequency point, wherein the carrier-to-noise ratio is the carrier-to-noise ratio of interference; when at least two target frequency points are needed, the frequency point with the lowest carrier-to-noise ratio is used as a target frequency point, and the method comprises the following steps:
after the frequency point A1 with the lowest carrier-to-noise ratio is selected, selecting the frequency point A2 with the carrier-to-noise ratio higher than the frequency point A1 and lower than other unselected frequency points, and then selecting the frequency point A3 with the carrier-to-noise ratio higher than the frequency point A2 and lower than other unselected frequency points until the number of the selected target frequency points meets the requirement of the number of frequency hopping frequency points;
the second term is: taking a frequency point which is lower than a preset threshold value and is closest to a second boundary frequency point as a target frequency point, wherein the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band;
when at least two target frequency points are needed, the frequency point which is lower than the preset threshold value and is closest to a second boundary frequency point is taken as the target frequency point, and the second boundary frequency point is another boundary frequency point corresponding to the first boundary frequency point in the equipment communication frequency band, and the method comprises the following steps:
setting a preset threshold value as CNRs, a first boundary frequency point as a highest frequency point and a second boundary frequency point as a lowest frequency point, and sequentially selecting frequency points with carrier-to-noise ratios lower than the CNRs as target frequency points from left to right until the number of the selected target frequency points meets the requirement of the number of frequency hopping frequency points;
the communication control device is further used for updating the target frequency point to a current frequency point when the second interference frequency spectrum is better than the first interference frequency spectrum;
the communication control device is used for adjusting the communication signal receiving gain of the signal receiving device in the communication equipment according to the carrier-to-noise ratio of the current frequency point and the carrier-to-noise ratios of other frequency points within the preset range of the current frequency point; when the Bluetooth communication equipment is in a transmitting state, the control circuit adjusts the transmitting power of the analog transmitting RF circuit by taking the lowest energy receiving power of the connected equipment as a standard according to the carrier-to-noise ratio of the current communication frequency hopping frequency point;
when the Bluetooth communication equipment is in a receiving state, the control circuit adjusts the receiving gain of each stage of circuit of the analog receiving RF circuit according to the carrier-to-noise ratio of the current communication frequency hopping frequency point and the nearby frequency points.
8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 5.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
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| CN113316224B (en) * | 2021-05-08 | 2022-11-15 | 珠海市杰理科技股份有限公司 | Broadcast channel searching method, apparatus, device terminal and storage medium |
| CN114900205B (en) * | 2022-03-28 | 2023-06-02 | 安克创新科技股份有限公司 | Adaptive frequency hopping method and device, storage medium and electronic equipment |
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