5G repeater interference detection automatic frequency shift method

Abstract

The invention belongs to the technical field of electronic information, and provides a 5G repeater interference detection automatic frequency shift method. Comprising the steps of slave input power and master-slave loss acquisition, slave interference threshold value calculation, slave power level information acquisition, slave interference frequency point information judgment, target base station parameter information acquisition, path loss calculation, host output power calculation, host interference threshold value calculation, host power level information acquisition and host non-interference frequency point information extraction. The method comprises the steps of frequency point combination set construction, interference frequency point removal, weight data set calculation and frequency point combination configuration. According to the invention, interference is automatically scanned in a master-slave wireless cascade environment and is automatically configured to a working frequency band with relatively low interference, so that interference on a base station caused by non-operation installation of a repeater system can be avoided; in addition, the interference power level in a larger range can be detected by adjusting the receiving gain of the receiver, and better coverage and coverage stability are guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of electronic information technology, and in particular to a 5G repeater interference detection automatic frequency shift method. Background Art

[0002] The existing frequency shift repeater system first uses a mobile phone or instrument to scan the signal frequency and power level of the wireless connection part of the repeater in the coverage area, and then manually judges and manually sets the frequency shift point to ensure that the coverage effect of the coverage area will not be affected during the operation, and the interference generated by the wireless connection part will not interfere with the base station and communication through the frequency shift repeater system. However, the wireless environment is variable, and it is impossible to determine that there will be no interference after coverage based on the fact that there is no interference in this survey. Therefore, this method cannot guarantee the stability of coverage. The existing technology is more likely to adopt a wired cascade method to avoid the impact of unknown interference generated by the wireless environment, but this method cannot require beauty and neatness while also requiring a wide coverage area. The wired connection method does not need to consider the unknown interference in the system, but it will involve difficulties in operation such as power supply and wiring in construction, and will also generate costs. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a 5G repeater interference detection automatic frequency shift method, which can realize automatic scanning of interference in a master-slave wireless cascade environment and automatic configuration to a working frequency band with lower interference.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A 5G repeater interference detection automatic frequency shift method, comprising:

[0006] Obtaining the slave input power and master-slave losses of the repeater host through the repeater host broadcast;

[0007] Calculate the difference between the slave input power and the master-slave loss to obtain a slave interference threshold value;

[0008] Obtaining the power level scanned by the repeater slave in the power detection mode to obtain the slave power level information; the frequency point configuration range of the power detection mode is F3 to F4;

[0009] Extracting the frequency point greater than or equal to the slave interference threshold value from the slave power level information, obtaining slave interference frequency point information, and sending the slave interference frequency point information to the repeater host;

[0010] Obtain the parameter information of the target base station, and obtain the base station transmission power, base station interference noise floor power, and host input power;

[0011] Calculate the difference between the base station transmission power and the host input power to obtain the path loss between the repeater host and the target base station;

[0012] Calculate the sum of the path loss and the interference noise floor power of the target base station to obtain the host output power;

[0013] Calculating the difference between the host output power and the gain of the repeater host to obtain a host interference threshold value;

[0014] Obtaining the power level scanned by the repeater host in the power detection mode to obtain host power level information;

[0015] Extract the frequency point less than the host interference threshold value from the host power level information to obtain the host interference-free frequency point information,

[0016] Splitting the target bandwidth signal into a plurality of combinations according to the frequency configuration range to obtain a frequency combination set;

[0017] Removing the frequency points in the frequency combination set that have the same frequency point information as the slave interference frequency point information to obtain a pre-processed frequency point set, and if the pre-processed frequency point set is an empty set, stopping the channel opening and sending an indication alarm to the terminal;

[0018] Calculate the difference between each power data in the preprocessing frequency point set and the host interference threshold value to obtain a weighted data set. If the values ​​in the weighted data set are all greater than 5, stop opening the channel and send an indication alarm to the terminal;

[0019] A frequency point combination corresponding to a weight whose value is 0 in the weight data set is selected to obtain target frequency point configuration information, and the target frequency point configuration information is updated to the repeater host and the repeater slave.

[0020] Preferably, it also includes:

[0021] When there is no combination whose values ​​are all 0 in the weight data set, the sum of the weights of each combination in the weight data set is calculated to obtain a weight number set;

[0022] Determine the frequency point combination corresponding to the combination with the smallest weight in the weight number set as the target frequency point configuration information;

[0023] When there are more than one combination with the smallest weight in the weight set, a frequency point combination corresponding to a combination with the lowest frequency band in the combination with the smallest weight is selected and determined as the target frequency point configuration information.

[0024] Preferably, the accuracy and step of the power detection mode are 1M.

[0025] Preferably, the calculation formula of the slave interference threshold is: Thr2=P7-PL2; wherein Thr2 is the slave interference threshold; P7 is the slave input power; and PL2 is the master-slave loss.

[0026] Preferably, the calculation formula of the path loss is: PL1=P3-P5; wherein, PL1 is the path loss; P3 is the base station transmission power; and P5 is the host input power.

[0027] Preferably, the host interference threshold value is calculated as follows: Thr1=P6-G1; wherein Thr1 is the host interference threshold value; P6 is the host output power; and G1 is the gain.

[0028] Preferably, the weight value corresponding to the power data having a difference a from the host interference threshold value is a.

[0029] Preferably, a 5G repeater interference detection automatic frequency shift system comprises: a target base station, a repeater host, a repeater slave and a user equipment which are wirelessly connected in sequence; the repeater host and the repeater slave have the same structure; the repeater host comprises: a first antenna, a second antenna, a first switch, a second switch and an uplink path and a downlink path which are mirror-inverted to each other; the first antenna is connected to the first switch; the second antenna is connected to the second switch; the first switch is connected to the input of the downlink path or the output of the uplink path; the second switch is connected to the output of the downlink path or the input of the uplink path; the downlink path comprises: a first filter, a first low-noise operational amplifier, a second filter, a second low-noise operational amplifier, a first balun, a receiver, a second balun, a half-attenuator, an amplifier tube, a third filter, a fixed attenuator, an operational amplifier and a fourth filter which are connected in sequence;

[0030] The first balun is used to convert the signal output by the second low-noise operational amplifier into a differential signal; the second balun is used to convert the signal output by the receiver into a room-divided signal.

[0031] The present invention discloses the following technical effects:

[0032] The present invention provides a 5G repeater interference detection and automatic frequency shifting method, which solves the problem of poor stability caused by manually setting a fixed frequency band in the prior art by automatically scanning interference in a master-slave wireless cascade environment and automatically configuring to a low-interference working frequency band, and realizes the configuration of detecting interference frequency bands and low-interference frequency bands by adjusting the receiving gain of the receiver. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 A schematic diagram of the automatic frequency shifting process for 5G repeater interference detection provided by an embodiment of the present invention;

[0035] Figure 2 A flow chart of the host scanning phase provided by an embodiment of the present invention;

[0036] Figure 3 A flow chart of the slave scanning phase provided by an embodiment of the present invention;

[0037] Figure 4 A slave interference determination flow chart provided by an embodiment of the present invention;

[0038] Figure 5 A host interference determination flow chart provided by an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of system coverage provided by an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of a simplified architecture of a master-slave radio frequency link provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The purpose of the present invention is to provide a 5G repeater interference detection automatic frequency shift method, which can realize automatic interference scanning in a master-slave wireless cascade environment and automatic configuration to a working frequency band with lower interference.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Figure 1 A schematic diagram of the automatic frequency shifting process for 5G repeater interference detection provided by an embodiment of the present invention, Figure 2 A flow chart of the host scanning phase provided by an embodiment of the present invention, Figure 3A flow chart of the slave scanning phase provided by an embodiment of the present invention, Figure 4 A slave interference judgment flow chart provided in an embodiment of the present invention, Figure 5 A host interference determination flow chart provided by an embodiment of the present invention, such as Figures 1 to 5 As shown, the present invention provides a 5G repeater interference detection automatic frequency shift method, comprising:

[0045] Step 100: Obtaining the slave input power and master-slave losses of the repeater host through the repeater host broadcast;

[0046] Step 200: Calculate the difference between the slave input power and the master-slave loss to obtain a slave interference threshold value;

[0047] Step 300: Obtain the power level scanned by the repeater slave in the power detection mode to obtain slave power level information; the frequency point configuration range of the power detection mode is F3 to F4;

[0048] Step 400: extracting the frequency points greater than or equal to the slave interference threshold value from the slave power level information, obtaining slave interference frequency point information, and sending the slave interference frequency point information to the repeater host;

[0049] Step 500: Obtain parameter information of the target base station, and obtain the base station transmission power, base station interference noise floor power, and host input power;

[0050] Step 600: Calculate the difference between the base station transmission power and the host input power to obtain the path loss between the repeater host and the target base station;

[0051] Step 700: Calculate the sum of the path loss and the interference noise floor power of the target base station to obtain the host output power;

[0052] Step 800: Calculate the difference between the host output power and the gain of the repeater host to obtain a host interference threshold value;

[0053] Step 900: Acquire the power level scanned by the repeater host in the power detection mode to obtain host power level information;

[0054] Step 1000: extract the frequency points that are less than the host interference threshold value from the host power level information to obtain the host interference-free frequency point information.

[0055] Step 1100: splitting the target bandwidth signal into a plurality of combinations according to the frequency configuration range to obtain a frequency combination set;

[0056] Step 1200: removing the frequency points in the frequency combination set that have the same frequency point information as the slave interference frequency point information to obtain a pre-processed frequency point set. If the pre-processed frequency point set is an empty set, stopping the channel opening and sending an indication alarm to the terminal;

[0057] Step 1300: Calculate the difference between each power data in the preprocessing frequency point set and the host interference threshold value to obtain a weighted data set. If the values ​​in the weighted data set are all greater than 5, stop opening the channel and send an indication alarm to the terminal.

[0058] Step 1400: Select the frequency point combination corresponding to the weight with a value of 0 in the weight data set to obtain target frequency point configuration information, and update the target frequency point configuration information to the repeater master and the repeater slave.

[0059] Preferably, it also includes:

[0060] When there is no combination whose values ​​are all 0 in the weight data set, the sum of the weights of each combination in the weight data set is calculated to obtain a weight number set;

[0061] Determine the frequency point combination corresponding to the combination with the smallest weight in the weight number set as the target frequency point configuration information;

[0062] When there are more than one combination with the smallest weight in the weight set, a frequency point combination corresponding to a combination with the lowest frequency band in the combination with the smallest weight is selected and determined as the target frequency point configuration information.

[0063] Preferably, the accuracy and step of the power detection mode are 1M.

[0064] Specifically, the calculation formula of the slave interference threshold is: Thr2=P7-PL2; wherein Thr2 is the slave interference threshold; P7 is the slave input power; and PL2 is the master-slave loss.

[0065] Furthermore, the calculation formula of the path loss is: PL1=P3-P5; wherein PL1 is the path loss; P3 is the base station transmission power; and P5 is the host input power.

[0066] Specifically, the host interference threshold value is calculated as follows: Thr1=P6-G1; wherein Thr1 is the host interference threshold value; P6 is the host output power; and G1 is the gain.

[0067] Furthermore, the weight value corresponding to the power data whose difference from the host interference threshold value is a is a.

[0068] refer to Figure 6 and Figure 7, a 5G repeater interference detection automatic frequency shift system, comprising: a target base station, a repeater host, a repeater slave and a user equipment wirelessly connected in sequence; the repeater host and the repeater slave have the same structure; the repeater host comprises: a first antenna, a second antenna, a first switch, a second switch and an uplink path and a downlink path that are mirror-inverted to each other; the first antenna is connected to the first switch; the second antenna is connected to the second switch; the first switch is connected to the input of the downlink path or the output of the uplink path; the second switch is connected to the output of the downlink path or the input of the uplink path; the downlink path comprises: a first filter, a first low-noise operational amplifier, a second filter, a second low-noise operational amplifier, a first balun, a receiver, a second balun, a half-attenuator, an amplifier tube, a third filter, a fixed attenuator, an operational amplifier, and a fourth filter connected in sequence;

[0069] The first balun is used to convert the signal output by the second low-noise operational amplifier into a differential signal; the second balun is used to convert the signal output by the receiver into a room-divided signal.

[0070] Specifically, before the device is turned on, the receiver of the host uplink input link and the slave downlink input link is set to configure the receiver in the success rate detection mode. In the power detection mode, the frequency range is configured to be F3 to F4, the accuracy and step are 1M, and the power level value of all frequency points is scanned and recorded. F3 to F4 is the frequency range supported by the repeater equipment, and the frequency band without interference is selected between F3-5 and F4+5 for operation. After the scan is completed, the power threshold value X that does not interfere with the base station and wireless communication is calculated first, and then the power level PF3-5 detected by each 1M frequency signal between F3-5 and F4+5 is compared with the threshold value X. When PX=1, the weight of the frequency point PF3-5 is recorded as 1, and the calculation is performed to PF4+5. Then, according to the bandwidth of the actual signal, the sum of the weights of all frequency points under the width is calculated. First, various combinations are determined according to the bandwidth, and the combination with a weight of 0 is preferentially selected for configuration. When the weights are all greater than 5, the repeater system begins to indicate that the system does not support working in this environment.

[0071] Preferably, the host receiving end receives the signal frequency F1, and automatically shifts the frequency of the host transmitting end and the slave receiving end to F2 through interference detection of the master and slave machines, and then restores it to signal F1 through the slave machine RF link to cover the blind area or weak coverage area.

[0072] Furthermore, the master-slave architecture is the same. The downlink of the master and slave receives the base station signal through the antenna, and then passes through the filter for filtering, then amplifies and filters it, and then connects to the balun after amplification, and then converts it into a differential signal through the balun to the receiver. After coming out of the receiver, it is connected to the balun and converted into a room signal, and then connected to the attenuator and amplifier for filtering, and finally connected to the power amplifier and filter to the antenna output. The uplink and downlink links are mirror-inverted, so the uplink and downlink RF links are the same.

[0073] Specifically, after the host is synchronized, it will obtain the parameter information of the base station, the base station transmission power P3 and the interference noise floor power P4 of the base station. Then, the input power P5 received by the host receiving end can be obtained through the synchronization field strength obtained by the host. The next step is to calculate the path loss PL1=P3-P5 between the host device and the base station. According to the path loss and the interference noise floor power of the base station, the output power P6=P4+PL1 of the host can be obtained. Finally, the input power of the interference can be obtained through the gain of the device, that is, the interference threshold value Thr1=P6-G1. Now after obtaining the host interference threshold value Thr1, the power level previously scanned by the host in the power detection mode is compared with the threshold value. The frequency point corresponding to the power level less than the threshold is judged as interference-free. Because F2 is a bandwidth signal, under the bandwidth supported by △F3-F4, it can be split into N combinations according to the bandwidth of F2. After the judgment is completed, it is necessary to first discard the frequency points that the slave thinks are interfering, and then determine whether there are remaining frequency points available. If not, the channel will not be opened and an alarm will be indicated. If yes, the weights of the frequencies in the remaining combinations will be calculated. When PF3-5-X=1, the weight of the frequency point PF3-5 is recorded as 1. When PF3-5-X=2, the weight of the frequency point PF3-5 is recorded as 2. And so on, calculate to PF4+5, and give priority to the combination with a weight of 0 for configuration, and select the combination with the smallest weight to work (for multiple combinations with the same weight, select the combination with the lowest frequency band). After the host side determines that the selection is completed, it notifies the slave of the working frequency point. When the weights are all greater than 5, the repeater system begins to indicate that the system does not support working in this environment, so as to avoid interfering with the base station or wireless communication after it is turned on.

[0074] The beneficial effects of the present invention are as follows:

[0075] The present invention can avoid interference to the base station caused by the inoperable installation of the repeater system by automatically scanning interference in the wireless cascade environment of the master and slave machines and automatically configuring to the working frequency band with lower interference. In addition, the receiving gain of the receiver can be adjusted to detect the interference power level in a wider range to ensure better coverage and coverage stability.

[0076] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0077] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A 5G repeater interference detection automatic frequency shift method, characterized in that: include: Obtaining the slave input power and master-slave losses of the repeater host through the repeater host broadcast; Calculate the difference between the slave input power and the master-slave loss to obtain a slave interference threshold value; Obtaining the power level scanned by the repeater slave in the power detection mode to obtain the slave power level information; the frequency point configuration range of the power detection mode is F3 to F4; Extracting the frequency point greater than or equal to the slave interference threshold value from the slave power level information, obtaining slave interference frequency point information, and sending the slave interference frequency point information to the repeater host; Obtain the parameter information of the target base station, and obtain the base station transmission power, base station interference noise floor power, and host input power; Calculate the difference between the base station transmission power and the host input power to obtain the path loss between the repeater host and the target base station; Calculate the sum of the path loss and the interference noise floor power of the target base station to obtain the host output power; Calculating the difference between the host output power and the gain of the repeater host to obtain a host interference threshold value; Obtaining the power level scanned by the repeater host in the power detection mode to obtain host power level information; Extract the frequency point less than the host interference threshold value from the host power level information to obtain the host interference-free frequency point information, Splitting the target bandwidth signal into a plurality of combinations according to the frequency configuration range to obtain a frequency combination set; Removing the frequency points in the frequency combination set that have the same frequency point information as the slave interference frequency point information to obtain a pre-processed frequency point set, and if the pre-processed frequency point set is an empty set, stopping the channel opening and sending an indication alarm to the terminal; Calculate the difference between each power data in the preprocessing frequency point set and the host interference threshold value to obtain a weighted data set. If the values ​​in the weighted data set are all greater than 5, stop opening the channel and send an indication alarm to the terminal; A frequency point combination corresponding to a weight whose value is 0 in the weight data set is selected to obtain target frequency point configuration information, and the target frequency point configuration information is updated to the repeater host and the repeater slave.

2. A 5G repeater interference detection automatic frequency shift method according to claim 1, characterized in that: Also includes: When there is no combination whose values ​​are all 0 in the weight data set, the sum of the weights of each combination in the weight data set is calculated to obtain a weight number set; Determine the frequency point combination corresponding to the combination with the smallest weight in the weight number set as the target frequency point configuration information; When there are more than one combination with the smallest weight in the weight set, a frequency point combination corresponding to a combination with the lowest frequency band in the combination with the smallest weight is selected and determined as the target frequency point configuration information.

3. A 5G repeater interference detection automatic frequency shift method according to claim 1, characterized in that: The accuracy and step of the power detection mode is 1M.

4. A 5G repeater interference detection automatic frequency shift method according to claim 1, characterized in that: The calculation formula of the slave interference threshold is: Thr2=P7-PL2; wherein Thr2 is the slave interference threshold; P7 is the slave input power; and PL2 is the master-slave loss.

5. A 5G repeater interference detection automatic frequency shift method according to claim 1, characterized in that: The calculation formula of the path loss is: PL1=P3-P5; wherein PL1 is the path loss; P3 is the base station transmission power; and P5 is the host input power.

6. A 5G repeater interference detection automatic frequency shift method according to claim 1, characterized in that: The host interference threshold value is calculated as follows: Thr1=P6-G1; wherein Thr1 is the host interference threshold value; P6 is the host output power; and G1 is the gain.

7. A 5G repeater interference detection automatic frequency shift method according to claim 1, characterized in that: The weight value corresponding to the power data whose difference from the host interference threshold value is a is a.

8. A 5G repeater interference detection automatic frequency shift system, characterized in that: include: The target base station, repeater host, repeater slave and user equipment are wirelessly connected in sequence; The repeater host and the repeater slave have the same structure; The repeater host comprises: a first antenna, a second antenna, a first switch, a second switch, and an uplink path and a downlink path which are mirror images of each other; the first antenna is connected to the first switch; the second antenna is connected to the second switch; the first switch is connected to the input of the downlink path or the output of the uplink path; the second switch is connected to the output of the downlink path or the input of the uplink path; the downlink path comprises: a first filter, a first low-noise operational amplifier, a second filter, a second low-noise operational amplifier, a first balun, a receiver, a second balun, a half-attenuator, an amplifier tube, a third filter, a fixed attenuator, an operational amplifier, and a fourth filter which are connected in sequence; The first balun is used to convert the signal output by the second low-noise operational amplifier into a differential signal; the second balun is used to convert the signal output by the receiver into a room-divided signal.

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