A repeater anti-interference method

Abstract

The application relates to the field of repeaters, in particular to a repeater anti-interference method, which comprises the following steps: establishing a contrast table of different transmission intensities of a repeater and received signal intensities of adjacent base stations; sending an adjustment signal to the adjacent base stations according to the current set transmission intensity of the repeater; obtaining a first received intensity of the adjustment signal received by the adjacent base stations; inquiring the contrast table according to the current transmission intensity of the repeater to obtain a corresponding second received intensity; obtaining an adjustment value based on the first received intensity and the second received intensity; obtaining a preset basic intensity; and forming a new transmission intensity by adding the adjustment value to the basic intensity. The application has the effect of reducing the interference of the repeater on the adjacent base stations or the repeater during operation.

Description

Technical Field

[0001] This application relates to the field of repeaters, and in particular to a method for resisting interference in repeaters. Background Technology

[0002] In the field of communications, repeaters, as an important piece of equipment, play a crucial role in signal coverage and enhancement. With the continuous development of communication technology, the requirements for signal coverage and quality are also increasing.

[0003] Existing methods for reducing interference in repeaters generally employ ALC (Alternating Current Logic) technology. This technology allows the repeater to automatically adjust its gain based on the received signal strength by setting the transmit signal strength, thus enabling the repeater to transmit signals at a preset strength. In practical applications, this is a common method that can, to a certain extent, guarantee signal quality within the repeater's coverage area.

[0004] However, existing methods for resisting interference with repeaters have significant shortcomings. Because interference signals in the environment are constantly changing, repeaters typically have a redundancy in their preset transmission signal strength to account for strong interference and ensure signal quality within their coverage area. However, when the interference signal is weak, if the repeater still transmits at the preset transmission signal strength, it can cause interference to neighboring base stations or repeaters. Summary of the Invention

[0005] In order to reduce the interference caused by the repeater to neighboring base stations or repeaters during operation, this application provides a repeater anti-interference method.

[0006] This application provides a repeater anti-interference method, which adopts the following technical solution:

[0007] An anti-interference method for a repeater includes the following steps: establishing a lookup table of different transmission strengths of the repeater and the received signal strengths of neighboring base stations; sending an adjustment signal to the neighboring base station according to the current transmission strength set by the repeater; obtaining a first received signal strength of the neighboring base station receiving the adjustment signal; querying the lookup table according to the current transmission strength of the repeater to obtain a corresponding second received signal strength; obtaining an adjustment value based on the first received signal strength and the second received signal strength; obtaining a preset base strength; and increasing the base strength by the adjustment value to form a new transmission strength.

[0008] By adopting the above technical solution, a comparison table is established between different transmission strengths of the repeater and the received signal strengths of neighboring base stations. This allows for the acquisition of information on the received signal strengths of neighboring base stations under different transmission strengths. An adjustment signal is sent to the neighboring base station to obtain the first received strength. The adjustment value is then obtained by combining the first received strength with the second received strength in the comparison table. The preset base strength is then increased by the adjustment value to form a new transmission strength. This allows for dynamic adjustment of the repeater's transmission strength based on the actual received signal conditions. This avoids transmitting signals at the preset transmission strength when the interference signal is weak, reducing interference to neighboring base stations or repeaters and improving the repeater's anti-interference capability.

[0009] Optionally, before obtaining the adjustment value, the following steps are included: determining whether the first reception strength is greater than the second reception strength; if yes, then using the first reception strength to update the corresponding second reception strength in the lookup table; if no, then obtaining the adjustment value is performed.

[0010] By adopting the above technical solution, the magnitudes of the first and second receiving strengths are determined before obtaining the adjustment value. If the first receiving strength is greater than the second receiving strength, the corresponding second receiving strength in the lookup table is updated using the first receiving strength. This makes the lookup table data more consistent with the actual situation and improves the accuracy of subsequent adjustments to the transmission strength.

[0011] Optionally, the different transmission intensities of the repeater in the reference table also correspond to a preset first attenuation value; obtaining the adjustment value includes the following steps: forming a second attenuation value based on the difference between the second reception intensity and the first reception intensity; obtaining a preset redundancy amount and the first attenuation value; and forming an adjustment value by multiplying the ratio of the second attenuation value to the first attenuation value by the redundancy amount.

[0012] By adopting the above technical solution, a first attenuation value is pre-set for different transmission intensities of the repeater, a second attenuation value is formed based on the difference between the second and first reception intensities, and an adjustment value is calculated in combination with the preset redundancy and the first attenuation value. This enables the repeater to dynamically adjust its transmission intensity according to the actual signal attenuation, effectively reducing the interference of the repeater's transmitted signal to neighboring base stations or repeaters, while ensuring signal quality within the coverage area under different environmental interference conditions.

[0013] Optionally, after obtaining the redundancy and the first attenuation value, but before forming the adjustment value, it is determined whether the second attenuation value is greater than the first attenuation value. If so, the first attenuation value in the lookup table is modified to be equal to the second attenuation value.

[0014] By adopting the above technical solution, after obtaining the redundancy and the first attenuation value and before forming the adjustment value, it is determined whether the second attenuation value is greater than the first attenuation value. If so, the first attenuation value in the lookup table is modified to be equal to the second attenuation value. This makes the first attenuation value in the lookup table more consistent with the actual situation, further optimizes the calculation of the adjustment value, and thus more accurately adjusts the repeater's transmission intensity to reduce interference.

[0015] Optionally, when sending an adjustment signal to a neighboring base station according to the current transmission strength set by the repeater, there are multiple adjustment signals. The neighboring base station receives multiple adjustment signals to form multiple received signal strengths, and selects the median of the multiple received signal strengths to form a first received strength.

[0016] By adopting the above technical solution, some interference signals exist for a short time and are also random. By selecting the median of multiple received signal strengths, the influence of random and short-lived interference signals on adjusting the transmission strength can be easily reduced.

[0017] Optionally, before obtaining the adjustment value, the method further includes the following steps: obtaining a preset threshold coefficient, wherein the threshold coefficient is less than one; obtaining an intensity threshold based on the threshold coefficient and the second received intensity; determining whether the first received intensity is greater than the intensity threshold; if so, obtaining the adjustment value.

[0018] By adopting the above technical solution, before obtaining the adjustment value, the strength threshold is obtained by using a preset threshold coefficient less than 1 and the second receiving strength. Then, it is determined whether the first receiving strength is greater than the strength threshold. This determines whether to obtain the adjustment value, avoiding unnecessary adjustment calculations and improving the efficiency and pertinence of the repeater anti-interference method. It can more reasonably adjust the repeater's transmission strength and reduce interference to neighboring base stations or repeaters.

[0019] Optionally, after determining that the first received strength is less than or equal to the strength threshold, the method further includes the following steps: statistically analyzing the frequency of occurrences where the first received strength is less than or equal to the strength threshold to form an error value; determining whether the error value is greater than a preset error threshold; and if so, issuing an alarm to provide a reminder.

[0020] By adopting the above technical solution, the frequency of occurrence of the first received strength being less than or equal to the strength threshold is statistically analyzed to form an error value, which can quantify abnormal signal strength. If the error value is greater than the preset error threshold, the severity of the abnormality can be determined. If so, an alarm is issued to remind the user, and the threshold coefficient can be adjusted in time, so that the repeater anti-interference method can better adapt to different interference environments, reduce interference to neighboring base stations or repeaters, and improve signal coverage and quality.

[0021] Optionally, the lookup table is generated through the following steps: sending test signals to neighboring base stations under different transmitted signal strengths, recording the received signal strengths of neighboring base stations corresponding to each transmitted signal strength, and forming a lookup table.

[0022] By adopting the above technical solution, a comparison table is established between different transmission strengths of the repeater and the received signal strength of the neighboring base station. This provides a data basis for obtaining adjustment values ​​to form a new transmission strength. Thus, the transmission strength of the repeater can be adjusted according to the actual situation, avoiding interference to neighboring base stations or repeaters when the interference signal is weak by transmitting signals at the preset transmission strength. This improves the repeater's anti-interference capability and signal coverage quality.

[0023] Optionally, when forming the adjustment value by multiplying the ratio of the second attenuation value to the first attenuation value by the redundancy, a preset compensation value is also added to form the adjustment value.

[0024] By adopting the above technical solution, when the adjustment value is formed by multiplying the ratio of the second attenuation value and the first attenuation value by the redundancy, a preset compensation value is added, which makes the calculation of the adjustment value more accurate, so that the new transmission strength is more in line with the actual situation, further reducing the interference of the repeater's transmitted signal to the neighboring base station or repeater, and improving the repeater's anti-interference effect.

[0025] Optionally, there are multiple compensation values, and each compensation value is set with an effective time period.

[0026] By adopting the above technical solution, multiple compensation value settings can be set for different time periods. The calculation of adjustment values ​​can be further optimized according to the interference characteristics of different time periods, so as to more accurately adjust the transmission intensity of the repeater and improve the anti-interference effect and signal coverage quality.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] By obtaining the strength of the signal received by the neighboring base station and comparing it with the value in the lookup table, the adjustment value can be obtained. The transmission strength of the repeater can be dynamically adjusted according to the actual situation, so as to reduce interference to the neighboring base station or repeater while ensuring the signal quality of the repeater coverage area.

[0029] During the adjustment process, relevant data is judged and updated, such as updating the received signal strength and attenuation value in the reference table, which can make the adjustment more accurate and reasonable. Attached Figure Description

[0030] Figure 1 This is a flowchart of steps S10-S70 and S120 in an embodiment of this application.

[0031] Figure 2 This is a flowchart of steps S70-S140 in an embodiment of this application;

[0032] Figure 3 This is a flowchart of step S120 in an embodiment of this application. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] This application discloses an anti-interference method for repeaters.

[0035] An anti-interference method for repeaters involves establishing a lookup table comparing the repeater's different transmission strengths with the received signal strengths of neighboring base stations. The lookup table also assigns a first attenuation value to each transmission strength. Generating the lookup table includes the following steps: In a low-interference environment, the repeater sends test signals to neighboring base stations at different transmission strengths, records the received signal strengths of the neighboring base stations corresponding to each transmission signal strength, and forms the lookup table. In another embodiment, a signal generator can be used to temporarily send test signals to neighboring base stations in place of the repeater.

[0036] In a high-interference environment, the repeater again sends test signals to the neighboring base station at different transmission intensities. The difference in received signal strength between the neighboring base station and the neighboring base station in high-interference and low-interference environments is then used to form the first attenuation value.

[0037] Based on the changes in call volume throughout the day, select a period with low call volume that is also sunny, where interference is weak. Conversely, select a period with high call volume that is also experiencing thunderstorms, strong winds, or other adverse weather conditions, where interference is strong.

[0038] Various data from repeaters and base stations are aggregated and sent to the monitoring center. This application also allows for remote control of repeater transmission strength through the monitoring center. After establishing a lookup table, adjusting the transmission strength of the repeater during use includes the following steps:

[0039] Reference Figure 1 Step S10: Send multiple adjustment signals to neighboring base stations according to the current transmission strength set by the repeater. Then proceed to step S20.

[0040] When a repeater is first used, an initial transmission strength is set to send signals. Subsequent signals will be sent at an adjusted transmission strength.

[0041] Step S20: Obtain the first received signal strength of the nearby base station's received adjustment signal. Then proceed to step S30.

[0042] After receiving an adjustment signal from a nearby base station, the signal strength of the adjustment signal is detected. There are multiple adjustment signals, resulting in multiple received signal strengths. The median of these multiple received signal strengths is then selected to form the first received signal strength.

[0043] By using time slots, frequency allocation, or CDMA technology, it is possible to detect the signal strength of neighboring base stations when they receive the adjusted signal.

[0044] Environmental interference is diverse, and factors such as equipment damage and human activity can cause short-lived and sporadic interference signals. These interference signals can affect the acquisition of the first received signal strength. By selecting the median of multiple received signal strengths to form the first received signal strength, the impact of short-lived and sporadic interference signals on the acquisition of the first received signal strength can be reduced.

[0045] Step S30: Obtain the corresponding second reception strength by consulting the lookup table based on the current transmission strength of the repeater. Then proceed to step S40.

[0046] Step S40: Obtain the preset threshold coefficient. Then proceed to step S50.

[0047] The threshold coefficient is less than one, and the threshold coefficient is a preset value. The threshold coefficient is used to determine whether the first receiving strength can be used to adjust the transmission strength of the repeater.

[0048] Step S50: Obtain the strength threshold based on the threshold coefficient and the second received strength. Then proceed to step S60.

[0049] The product of the threshold coefficient and the second received intensity forms the intensity threshold.

[0050] Step S60: Determine whether the first received strength is greater than the strength threshold; if yes, proceed to step S120; if no, proceed to step S70.

[0051] When a system failure occurs, neighboring base stations may not receive the adjustment signal, or the adjustment signal received by neighboring base stations may be very weak, resulting in a first received signal strength less than or equal to the strength threshold. Conversely, the first received signal strength may be greater than the strength threshold.

[0052] Step S70: Count the frequency of first received signal strength less than or equal to the strength threshold to form error values. Then proceed to step S80.

[0053] Set a time window, count the number of occurrences within the current time window, divide by the time window length, and obtain the error value.

[0054] Step S80: Determine whether the error value is greater than the preset error threshold; if yes, proceed to step S90; if no, proceed to step S100.

[0055] Step S90: Issue an alarm to provide a reminder. Then return to step S10.

[0056] If the initial received signal strength repeatedly falls below the threshold, a malfunction may exist. Issue an alert promptly to remind staff to conduct an inspection.

[0057] If the frequency of the first received signal strength being less than the strength threshold is small, it may be a false trigger or an occasional signal loss, and the process will return to step S10 to retransmit the adjustment signal.

[0058] Step S100: Determine whether the first reception strength is greater than the second reception strength; if yes, proceed to step S110; if no, proceed to step S120.

[0059] Step S110: Update the corresponding second reception strength in the lookup table using the first reception strength. Then return to step S10.

[0060] Step S120: Obtain an adjustment value based on the first received strength and the second received strength. Then, proceed to step S130.

[0061] Step S120 includes the following steps:

[0062] Step S121: Form a second attenuation value based on the difference between the second received strength and the first received strength. Then proceed to step S122.

[0063] Step S122: Obtain the preset redundancy amount and the first attenuation value. Then proceed to step S123.

[0064] The first attenuation value is obtained by looking up the current transmission strength of the repeater in the reference table.

[0065] In existing ALC technology, under ideal interference-free conditions, the repeater's transmission strength only needs to reach A to meet coverage requirements. However, considering interference time, setting the repeater's transmission strength requires some redundancy, so the actual transmission strength of the repeater is B. The redundancy in this application is greater than or equal to the value of BA.

[0066] Step S123: Determine whether the second attenuation value is greater than the first attenuation value. If yes, proceed to step S124; otherwise, proceed to step S125.

[0067] Step S124: Modify the first attenuation value in the lookup table to equal the second attenuation value. Then return to step S10.

[0068] When establishing a lookup table, data needs to be collected in both strong and weak interference environments to obtain the first attenuation value. However, satisfying both strong and weak interference environments is not easy. By determining that the interference in the current environment is stronger than the strong interference environment in which the lookup table was established when the second attenuation value is greater than the first attenuation value, the first attenuation value in the lookup table is modified to equal the second attenuation value. By using a repeater to automatically iterate the first attenuation value of the lookup table, the environmental requirements for establishing the lookup table are reduced.

[0069] Step S125: The adjustment value is formed by multiplying the ratio of the second attenuation value to the first attenuation value by the redundancy amount and adding the preset compensation value. Then, step S130 is executed.

[0070] The terrain and population distribution between a repeater and neighboring base stations differ from those within the repeater's coverage area. By introducing compensation values, the accuracy of obtaining adjustment values ​​is improved.

[0071] There are multiple compensation values, each with a set effective period. Different compensation values ​​take effect during different periods to adapt to changes in population movement.

[0072] Step S130: Obtain the preset base strength. Then proceed to step S140.

[0073] Step S140: Increase the base intensity by the adjustment value to form a new emission intensity. Then return to step S10.

[0074] The implementation principle of the repeater anti-interference method in this application is as follows: By establishing a comparison table of different transmission strengths of the repeater and the received signal strength of neighboring base stations, the attenuation of the repeater's transmission signal can be accurately understood. During actual operation, an adjustment signal is sent to neighboring base stations based on the current transmission strength of the repeater, and the received signal strength of the neighboring base stations is obtained and compared with the data in the comparison table to calculate the adjustment value. Then, combined with a preset base strength and compensation value, the transmission strength of the repeater is dynamically adjusted. This reduces the likelihood of the repeater transmitting signals at a preset high transmission strength when the interference signal is weak, thus reducing interference to neighboring base stations or repeaters, improving communication quality and efficiency, and representing a significant improvement and enhancement compared to existing technologies.

[0075] Furthermore, the first attenuation value and first received strength data in the reference table of this application are automatically corrected during the use of the repeater. Therefore, when establishing the reference table, it is not necessary to specifically select environments with strong and weak interference for data collection and testing. Values ​​can even be directly estimated and entered into the reference table.

[0076] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for resisting interference in a repeater, characterized in that, Includes the following steps: Establish a lookup table of different transmission strengths of a repeater and the received signal strengths of neighboring base stations; send an adjustment signal to the neighboring base stations according to the current transmission strength set by the repeater; obtain the first received signal strength of the neighboring base stations receiving the adjustment signal; and query the lookup table according to the current transmission strength of the repeater to obtain the corresponding second received signal strength. An adjustment value is obtained based on the first received strength and the second received strength; a preset base strength is obtained; and the base strength is increased by the adjustment value to form a new transmission strength. The reference table also specifies a preset first attenuation value for each repeater's different transmission intensities. Obtaining the adjustment value includes the following steps: forming a second attenuation value based on the difference between the second and first reception intensities; obtaining a preset redundancy amount and the first attenuation value; and forming an adjustment value by multiplying the ratio of the second and first attenuation values ​​by the redundancy amount. After obtaining the redundancy and the first attenuation value, and before forming the adjustment value, determine whether the second attenuation value is greater than the first attenuation value. If so, modify the first attenuation value in the lookup table to be equal to the second attenuation value. When an adjustment signal is sent to a neighboring base station according to the current transmission strength set by the repeater, there are multiple adjustment signals. The neighboring base station receives multiple adjustment signals to form multiple received signal strengths, and selects the median of the multiple received signal strengths to form a first received strength.

2. The anti-interference method for a repeater according to claim 1, characterized in that: Before obtaining the adjustment value, the following steps are included: determining whether the first reception strength is greater than the second reception strength; if yes, then using the first reception strength to update the corresponding second reception strength in the lookup table; if no, then obtaining the adjustment value is performed.

3. The anti-interference method for a repeater according to claim 1, characterized in that: Before obtaining the adjustment value, the following steps are also included: obtaining a preset threshold coefficient, wherein the threshold coefficient is less than one; obtaining an intensity threshold based on the threshold coefficient and the second received intensity; determining whether the first received intensity is greater than the intensity threshold; if so, obtaining the adjustment value.

4. The anti-interference method for a repeater according to claim 3, characterized in that: After determining that the first received strength is less than or equal to the strength threshold, the method further includes the following steps: counting the frequency of occurrence of the first received strength being less than or equal to the strength threshold to form an error value; determining whether the error value is greater than a preset error threshold; if so, issuing an alarm to remind the user.

5. The anti-interference method for a repeater according to claim 1, characterized in that: The reference table is generated through the following steps: sending test signals to neighboring base stations under different transmitted signal strengths, recording the received signal strengths of neighboring base stations corresponding to each transmitted signal strength, and forming a reference table.

6. The anti-interference method for a repeater according to claim 1, characterized in that: When forming the adjustment value by multiplying the ratio of the second attenuation value to the first attenuation value by the redundancy, a preset compensation value is also added to form the adjustment value.

7. The anti-interference method for a repeater according to claim 6, characterized in that: There are multiple compensation values, and each compensation value is set with an effective time period.

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