Method and device for resisting signal interference

Abstract

The invention relates to a method and a device for resisting signal interference, comprising the following steps: a wireless base station receives an interference signal and judges that the interference signal is a packet interference signal, a bandwidth occupation interference signal or a multiple interference signal; then, a first control signal is generated corresponding to the packet interference signal, a second control signal is generated corresponding to the bandwidth interference signal, or a third control signal is generated corresponding to the multiple interference signal. And finally, according to the first control signal, the second control signal or the third control signal, controlling the frequency, the field pattern or the range of the transmitted signal so as to avoid the interference signal. According to the invention, judgment can be carried out according to external or self-collected information, and the signal coverage range or frequency of the wireless base station is adjusted, so that the problem of mutual interference between signals is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to an electrical communication technology, in particular to a method and device for anti-jamming. BACKGROUND

[0002] With the rapid development of technology, technologies such as big data, artificial intelligence, and the Internet must rely on powerful communication technology as the foundation. Therefore, the industry has developed many wireless communication technologies to improve the speed and transmission of communication, so that the quality of communication is better to support the development of technologies such as big data, artificial intelligence, and the Internet.

[0003] For example, the wireless distribution system (Wireless Distribution System) technology is a whole network composed of wireless network connections. Wireless communication is carried out between multiple wireless base stations (Access Points, AP) to form a large network. However, when planning the location and signal coverage range between wireless base stations, great care must be taken. If the wireless base station is not properly configured, it may cause the signals emitted by multiple wireless base stations to interfere with each other, thereby affecting the overall signal reception quality.

[0004] Therefore, if a method and device for anti-jamming can be invented, which can intelligently adjust to avoid the interference signals of other devices, the above problems can be effectively improved. SUMMARY

[0005] The main purpose of the present application is to provide a method and device for anti-jamming, which can determine and adjust the signal coverage range or frequency of the wireless base station by external information or self-collected information to solve the problem of mutual interference between signals.

[0006] To achieve the above purpose, the present application provides a method for anti-jamming, including the following steps: the wireless base station receives an interference signal. The wireless base station determines that the interference signal is a packet interference signal, a bandwidth occupation interference signal, or a multiple interference signal. The wireless base station generates a first control signal corresponding to the packet interference signal, a second control signal corresponding to the bandwidth interference signal, or a third control signal corresponding to the multiple interference signal. The wireless base station controls the frequency, field pattern, or range of the transmitted signal according to the first control signal, the second control signal, or the third control signal to avoid the interference signal.

[0007] The step of judging the interference signal as a packet interference signal further comprises judging the interference signal as a packet interference signal when the wireless base station detects that the signal noise ratio (SNR) is lower than a first default value, the channel utilization (Channel Utilization) is greater than a second default value, or the packet error rate (PER) is greater than a third default value.

[0008] The step of judging the interference signal as a bandwidth interference signal further comprises judging the interference signal as a bandwidth interference signal when the wireless base station detects that the interference signal occupies the bandwidth of the transmission signal.

[0009] The step of judging the interference signal as a multiple interference signal further comprises judging the multiple interference signals as a multiple interference signal when the wireless base station detects the multiple interference signals.

[0010] The first control signal is to reduce the range of the transmission signal by reducing the power of the transmission signal by a fourth default value, or to adjust the frequency of the transmission signal so that the frequency of the transmission signal is different from the frequency of the interference signal.

[0011] The second control signal is to control the wireless base station to judge the range of the interference signal, and to adjust the field pattern of the transmission signal to avoid the range of the interference signal according to the range of the interference signal.

[0012] The wireless base station judges the range of the interference signal by using the received signal strength indication positioning technology or the channel state information positioning technology.

[0013] The third control signal is to control the wireless base station to judge the range of the interference signal, and to adjust the field pattern of the transmission signal to avoid the range of the interference signal according to the range of the interference signal, or to reduce the range of the transmission signal by reducing the power of the transmission signal by a fourth default value.

[0014] The wireless base station detects the interference signal by using the background scanning technology.

[0015] In addition, the application also provides an anti-interference signal device, which comprises a signal transceiver and a processor. The signal transceiver receives the interference signal. The processor is connected to the signal transceiver, and judges the interference signal as a packet interference signal, a bandwidth interference signal, or a multiple interference signal. The processor also generates a first control signal corresponding to the packet interference signal, a second control signal corresponding to the bandwidth interference signal, or a third control signal corresponding to the multiple interference signal, and controls the frequency, field pattern, or range of the transmission signal of the signal transceiver to avoid the interference signal according to the first control signal, the second control signal, or the third control signal. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a wireless distributed system according to an embodiment of the present invention.

[0017] Figure 2 This is a block diagram of a wireless base station according to an embodiment of the present invention.

[0018] Figure 3 This is a flowchart of a method according to an embodiment of the present invention.

[0019] Figure 4a and Figure 4b This is a schematic diagram illustrating the state of adjusting the transmitted signal according to the first embodiment of the present invention.

[0020] Figure 5a and Figure 5b This is a schematic diagram illustrating the state of adjusting the transmitted signal according to the second embodiment of the present invention.

[0021] Figures 6a to 6c This is a schematic diagram illustrating the state of adjusting the transmitted signal according to the third embodiment of the present invention.

[0022] Explanation of main component symbols

[0023] Wireless base stations 1-4

[0024] Signal transceiver 10

[0025] Processor 12

[0026] Steps S10 to S18

[0027] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0028] To facilitate understanding and implementation of the present invention by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] This invention relates to a method and apparatus for resisting signal interference, and is a technology for solving the problem of mutual interference between wireless signals. In this embodiment, the method for resisting signal interference can be applied to a wireless distribution system to solve the problem of mutual interference between signals emitted by multiple wireless base stations within the system. The method of resisting signal interference using this invention can determine and adjust the coverage range or frequency of the transmitted signals of the wireless base stations based on external information or information collected internally, thereby resolving the problem of mutual interference between signals.

[0030] Please refer to Figure 1This is a schematic diagram of a wireless distributed system. The wireless distributed system consists of multiple wireless base stations 1 to 4, which can communicate wirelessly to form a large network. In this embodiment, the wireless base stations 1 to 4 can be wireless access points (APs).

[0031] Please refer to Figure 1 and Figure 2 The method for resisting signal interference can be applied to at least one wireless base station 1 in a wireless distributed system. For example... Figure 2 As shown, in this embodiment, the wireless base station 1 includes a transceiver 10 and a processor 12. The transceiver 10 and processor 12 are connected by a signal. The processor 12 can also be located in the cloud and wirelessly connected to the transceiver 10, and is not limited to being located in the wireless base station 1. The transceiver 10 can consist of an antenna and a wireless drive controller for transmitting and receiving signals. The transceiver 10 is prior art and will not be described in detail. The processor 12 can be a central processing unit (CPU) with a built-in Artificial Intelligence (AI) module to perform calculations of the method of this invention. The transceiver 10 can receive external signals and transmit them to the processor 12. After analyzing the external signals, the processor 12 sends corresponding control signals to the transceiver 10, causing the transceiver 10 to transmit wireless signals according to the control of the processor 12.

[0032] Next, please refer to the following: Figure 3 To illustrate the anti-signal interference method of the present invention, steps S10 to S18 are included. First, in step S10, the processor 12 of the wireless base station 1 controls the transceiver 10 to perform a background scan to detect whether there is an interfering signal. The interfering signal refers to any unwanted signal that, in the communication system, is simultaneously received by the transceiver 10 along with the target signal and adversely affects the transceiver 10. In this embodiment, the interfering signal may be a signal emitted by other base stations 2 to 4.

[0033] Next, in step S12, after the transceiver 10 of the wireless base station 1 receives the interference signal, the transceiver 10 transmits the interference signal to the processor 12. Then, in step S14, the processor 12 determines the type of interference signal, identifying it as packet interference, bandwidth occupancy interference, or a combination of multiple interference signals.

[0034] The step of determining the interference signal as a packet interference signal by the processor 12 includes defining the interference signal as a packet interference signal when the processor 12 detects that the signal-to-noise ratio (SNR) is lower than a first default value, the channel utilization is greater than a second default value, or the packet error rate (PER) is greater than a third default value. In this embodiment, the first default value can be 23 dB. The second default value can be 75%. The third default value can be 0.1%. However, the values of the first default value, the second default value, and the third default value are not limited to the above conditions.

[0035] The step of determining the interference signal as a bandwidth interference signal by the processor 12 includes determining the interference signal as a bandwidth interference signal when the processor 12 determines that the interference signal occupies the bandwidth of the signal transmitted by the signal transceiver 10. The step of determining the interference signal as a multiple interference signal by the processor 12 includes determining multiple interference signals as a multiple interference signal when the signal transceiver 10 of the wireless base station 1 detects multiple interference signals.

[0036] After the processor 12 distinguishes the types of the interference signals, the processor 12 generates a control signal corresponding to different types of interference signals in step S16. In detail, the processor 12 generates a first control signal corresponding to a packet interference signal, a second control signal corresponding to a bandwidth interference signal, and a third control signal corresponding to a multiple interference signal.

[0037] Finally, the wireless base station 1 controls the frequency, field pattern, or range of the transmitted signal to avoid the interference signal according to the first control signal, the second control signal, or the third control signal in step S18.

[0038] In this embodiment, the first control signal is to adjust the power of the transmitted signal, and the power of the transmitted signal is reduced by a fourth default value to reduce the range of the transmitted signal. In this embodiment, the fourth default value can be 3 dB. For example, referring to Figure 4a and 4b As shown in Figure 4a , the transmitted signal of the wireless base station 2 interferes with the transmitted signal of the wireless base station 1, and the processor 12 determines that the interference signal is a packet interference signal and generates a first control signal accordingly. The processor 12 controls the signal transceiver 10 to reduce the power of the transmitted signal according to the first control signal, as shown in Figure 4b , reducing the power of the transmitted signal can reduce the range of the transmitted signal of the wireless base station 1, so that the wireless signal transmitted by the wireless base station 2 does not interfere with the range of the wireless signal of the wireless base station 1.

[0039] The first control signal can also adjust the frequency of the transmitted signal so that the frequency of the transmitted signal is different from the frequency of the interference signal. In this embodiment, the interference signal input from the transceiver 10 to the processor 12 includes the frequency information of the interference signal. The processor 12 can control the transceiver 10 according to the frequency information to adjust the frequency of the transmitted signal so that the frequency of the transmitted signal is different from the frequency of the interference signal, so that the signals will not interfere with each other.

[0040] The second control signal controls the processor 12 of the wireless base station 1 to determine the range of the interference signal received by the transceiver 10, and adjusts the pattern of the transmitted signal to avoid the range of the interference signal based on the range of the interference signal. Specifically, the processor 12 of the wireless base station 1 determines the range of the interference signal using Received Signal Strength Indicator (RSS1) or Channel State Information (CSI) positioning technology. Once the range of the interference signal is known, the processor 12 can use beamforming technology to control the transceiver 10 to adjust the pattern of the transmitted signal. Beamforming technology adjusts the signal phase and amplitude of each antenna in the antenna array to enhance the signal in a specific direction, thereby achieving directional beam control.

[0041] For example, please refer to Figure 5a and Figure 5b .like Figure 5a As shown, the transmitted signal of wireless base station 2 interferes with the transmitted signal of wireless base station 1. At this time, processor 12 determines that the interference signal is a bandwidth interference signal and generates a second control signal accordingly. Processor 12 controls transceiver 10 to adjust the field pattern of the transmitted signal based on the second control signal, such as... Figure 5b As shown, the processor 12 determines the range of the interference signal emitted by the wireless base station 2 based on the second control signal. The processor 12 then controls the field pattern of the transmitted signal emitted by the transceiver 10 according to the range of the interference signal. In this embodiment, the field pattern of the transmitted signal from the wireless base station 1 is adjusted to an ellipse. Of course, other field patterns can be used depending on the situation; for example, if the interference signal is located at the perimeter, the field pattern will become a smaller circle. If the interference signal is on the right, the field pattern will radiate to the left.

[0042] The third control signal is used to control the processor 12 of the wireless base station 1 to determine the range of the interference signal received by the transceiver 10, and to adjust the field pattern of the transmission signal to avoid the range of the interference signal according to the range of the interference signal. The technique of determining the range of the interference signal and adjusting the field pattern of the transmission signal is the same as that of the above-mentioned embodiment of the second control signal, and the signal strength indication positioning technique or the channel state information positioning technique and the beam forming technique are used, and thus will not be repeated here. The third control signal can also reduce the transmission power to a fourth default value to reduce the range of the transmission signal. In this embodiment, the fourth default value can be 3 dB.

[0043] For example, please refer to Figure 6a , Figure 6b and Figure 6c . As shown in Figure 6a , the transmission signals of the plurality of wireless base stations 2-4 interfere with the transmission signal of the wireless base station 1. At this time, the processor 12 determines that the interference signal is a multiple interference signal, and a third control signal is generated accordingly. The processor 12 determines the range of the plurality of interference signals of the wireless base stations 2-4 according to the third control signal, and the processor 12 controls the transceiver 10 to adjust the field pattern of the transmission signal to avoid the range of the interference signal according to the range of the interference signal. As shown in Figure 6b , the field pattern of the transmission signal can be adjusted to be elliptical to avoid the interference signals of the wireless base stations 2-4.

[0044] Or as shown in Figure 6c , the processor 12 controls the transceiver 10 to reduce the power of the transmission signal to reduce the range of the transmission signal of the wireless base station 1, so that the wireless signals emitted by the wireless base stations 2-4 will not interfere with the wireless signal range of the wireless base station 1.

[0045] After completing the above step S18, return to step S10, the transceiver 10 of the wireless base station 1 will continue to perform background scanning, enter step S12, when the interference signal is scanned, the interference signal is processed by steps S14-S18 to gradually adjust the transmission signal to the ideal signal range or frequency. Repeatedly performing steps S14-S18 can also recursively converge to gradually reduce the range of the transmission signal, such as reducing the power by 3 dB at a time, slowly reducing the range of the transmission signal, which can avoid the range of the transmission signal being reduced too small at a time, thereby affecting the communication quality of the user.

[0046] In summary, the processor of the present application can more intelligently process the problem of signal interference, and can automatically determine and adjust the wireless base station signal coverage range or frequency by external information or self-collected information to solve the problem of mutual interference between signals.

[0047] In summary, the present application meets the requirements of an invention patent, and a patent application is submitted according to the law. However, the above is only the preferred embodiment of the present application, and the scope of the present application is not limited to the above-mentioned embodiment. Any equivalent modification or change made by those skilled in the art in accordance with the spirit of the present application should be covered by the following patent application scope.

Claims

1. A method for combating signal interference, comprising the steps of: receiving an interfering signal at a wireless base station; determining at the wireless base station whether the interfering signal is a packet jamming signal, a bandwidth occupation jamming signal, or a multiple jamming signal; generating a first control signal at the wireless base station corresponding to the packet jamming signal, a second control signal corresponding to the bandwidth occupation jamming signal, or a third control signal corresponding to the multiple jamming signal; and controlling the frequency, pattern, or range of a transmitted signal at the wireless base station to avoid the interfering signal based on the first, second, or third control signal.

2. The method of claim 1, wherein, The step of determining that the interfering signal is the packet jamming signal further comprises determining that the interfering signal is the packet jamming signal when the wireless base station detects that a signal-to-noise ratio is less than a first default value, a channel utilization is greater than a second default value, or a packet error rate is greater than a third default value.

3. The method of claim 1, wherein, The step of determining that the interfering signal is the bandwidth occupation jamming signal further comprises determining that the interfering signal is the bandwidth occupation jamming signal when the wireless base station detects that the interfering signal occupies a bandwidth of the transmitted signal.

4. The method of claim 1, wherein, The step of determining that the interfering signal is the multiple jamming signal further comprises determining that a plurality of interfering signals is the multiple jamming signal when the wireless base station detects the plurality of interfering signals.

5. The method of claim 1, wherein, The first control signal is to reduce a power of the transmitted signal by a fourth default value to reduce a range of the transmitted signal, or to adjust a frequency of the transmitted signal to be different from a frequency of the interfering signal.

6. The method of claim 1, wherein, The second control signal is to control the wireless base station to determine a range of the interfering signal, and to adjust a pattern of the transmitted signal to avoid the range of the interfering signal based on the range of the interfering signal.

7. The method of claim 6, wherein the signal interference is reduced by, The wireless base station determines the range of the interfering signal using a received signal strength indication positioning technique or a channel state information positioning technique.

8. The method of claim 1, wherein, The third control signal is to control the wireless base station to determine the range of the interfering signal, and to adjust the pattern of the transmitted signal to avoid the range of the interfering signal based on the range of the interfering signal, or to reduce the power of the transmitted signal by the fourth default value to reduce the range of the transmitted signal.

9. The method of claim 1, wherein, The wireless base station detects the interfering signal using a background scanning technique.

10. An apparatus for combating signal interference, comprising: a wireless base station, comprising: a signal transceiver to receive an interfering signal; and a processor, coupled to the signal transceiver, to receive and determine whether the interfering signal is a packet jamming signal, a bandwidth occupation jamming signal, or a multiple jamming signal, to generate a first control signal corresponding to the packet jamming signal, a second control signal corresponding to the bandwidth occupation jamming signal, or a third control signal corresponding to the multiple jamming signal, and to control a frequency, a pattern, or a range of a transmitted signal from the signal transceiver to avoid the interfering signal based on the first, second, or third control signal.

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