A method and apparatus for locating an interference source

Abstract

The application provides a method and device for positioning an interference source, and relates to the technical field of communication. The method can improve the accuracy of positioning the interference source. The method comprises the following steps: acquiring position information and interference types of a plurality of cells including a first cell; determining a cell set for positioning an interference source of the first cell from the plurality of cells according to the position information and the interference types of the plurality of cells; wherein the cell set comprises the first cell and a plurality of second cells; the distance between the second cell and the first cell is within a preset distance, and the interference type of the second cell is the same as the interference type of the first cell; acquiring a received signal strength value and an antenna normal direction of each cell in the cell set; and determining position information of the interference source according to the position information, the received signal strength value and the antenna normal direction of each cell in the cell set.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method and apparatus for locating interference sources. Background Technology

[0002] In recent years, with the increasing scale of mobile communication networks, network coverage and performance have become increasingly sophisticated. However, a large number of network coverage gaps still exist. Users in areas with weak signal coverage often use signal amplifiers such as repeaters to amplify their received signal. While the introduction of signal amplifiers improves the signal strength for some users, it leads to increased call drop rates, reduced communication quality, decreased base station coverage, and network congestion for other users in the same cell. Therefore, signal amplifiers are a source of interference, and it is necessary to locate and eliminate these interference sources.

[0003] Currently, the common method for locating interference sources is through network data. This involves collecting interference data from multiple cells to identify the type of interference experienced by each cell. Cells with the same type of interference are then clustered together. Cells clustered to the same cluster center are further processed, and the difference in interference intensity received at different nodes is converted into path loss difference. This difference is then combined with a propagation model to calculate the location of the interference source. However, the antenna directions of cells within the same cluster are inconsistent, leading to inaccurate location of the interference source. Summary of the Invention

[0004] This application provides a method and apparatus for locating interference sources, which improves the accuracy of locating interference sources.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] Firstly, this application provides a method for locating interference sources, the method comprising:

[0007] Obtain the location information and interference type of multiple cells, including the first cell;

[0008] Based on the location information and interference type of each of the multiple cells, a set of cells for locating the interference source of the first cell is determined from the multiple cells; wherein, the set of cells includes the first cell and multiple second cells; the distance between the second cells and the first cell is within a preset distance, and the interference type of the second cells is the same as the interference type of the first cell;

[0009] Obtain the received signal strength and antenna normal direction of each cell in the cell set;

[0010] The location information of the interference source is determined based on the location information of each cell in the cell set, the received signal strength value, and the antenna normal direction.

[0011] In one possible implementation, the aforementioned interference types include broadband interference, narrowband spike interference, or sawtooth interference.

[0012] In another possible implementation, when the interference type of the cell is broadband interference, the received signal strength value of the cell is the average value of the noise floor of the cell's Physical Resource Block (PRB); when the interference type of the cell is narrowband spike interference, the received signal strength value of the cell is the value of the spike in the interference frequency domain waveform of the cell; and when the interference type of the cell is sawtooth interference, the received signal strength value of the cell is the average value of the noise floor of the cell's PRB.

[0013] In another possible implementation, determining the location information of the interference source based on the location information, received signal strength value, and antenna normal direction of each cell in the cell set can include: for each cell in the cell set, determining a first path loss function for the cell based on the cell's location information, received signal strength value, and antenna normal direction; for each cell in the cell set, determining a second path loss function for the cell based on the cell's location information and antenna height; and determining the location information of the interference source based on the first path loss function and second path loss function of each cell in the cell set.

[0014] In another possible implementation, the first path loss function satisfies the following relationship:

[0015] L = P - RSSI + Gr

[0016] Where Gr is the receive gain of the base station in the cell, in dB, RSSI is the received signal strength of the cell, P is the transmit power of the interference source, and L is the path loss of each cell.

[0017] In another possible implementation, the second path loss function satisfies the following relationship:

[0018] L=88+40lg d+20lg f-20lg hthr–K

[0019] Where d is the distance between the cell and the interference source in km; f is the operating frequency of the interference source in MHz; ht is the height of the transmitting antenna of the interference source in the target cell in meters; hr is the height of the receiving antenna of the base station in the target cell in meters; and K is the terrain correction factor.

[0020] This application offers at least the following advantages: The interference source localization method provided in this application, building upon traditional methods which already consider cell location information, interference type, and received signal strength, also incorporates the antenna normal direction of the cell, thus improving the accuracy of interference source localization. It should be understood that the antenna normal direction of the cell directly affects the receiving gain of the cell antenna, which reflects the degree and directionality of interference affecting the cell. Therefore, by incorporating the antenna normal direction into traditional interference source localization methods, the accuracy of interference source localization can be improved.

[0021] Secondly, this application provides an interference source locating device, the device comprising:

[0022] The acquisition unit is used to acquire the location information and interference type of multiple cells, including the first cell.

[0023] The processing unit is configured to determine a set of cells for locating the interference source of the first cell from multiple cells based on the location information and interference type of each cell; wherein the set of cells includes the first cell and multiple second cells; the distance between the second cells and the first cell is within a preset distance, and the interference type of the second cells is the same as that of the first cell;

[0024] The acquisition unit is also used to acquire the received signal strength value and antenna normal direction of each cell in the cell set;

[0025] The processing unit is also used to determine the location information of the interference source based on the location information of each cell in the cell set, the received signal strength value, and the antenna normal direction.

[0026] In one possible implementation, the processing unit is specifically used to: determine a first path loss function for the cell based on the cell's location information, received signal strength value, and antenna normal direction; determine a second path loss function for the cell based on the cell's location information and antenna height; and determine the location information of the interference source based on the first and second path loss functions of each cell in the cell set.

[0027] Thirdly, this application provides a computer device comprising: a processor and a memory; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, causing the server to implement the interference source localization method of the first aspect described above.

[0028] Fourthly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the interference source localization method of the first aspect described above.

[0029] Fifthly, this application provides a computer program product that, when run on a computer, causes the computer to perform the steps of the related method described in the first aspect, so as to implement the interference source localization method of the first aspect.

[0030] The beneficial effects of the second to fifth aspects mentioned above can be referred to the corresponding description of the first aspect, and will not be repeated here. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a flowchart illustrating an interference source localization method provided in this application.

[0033] Figure 2 This is a waveform diagram of a broadband interference type provided in an embodiment of this application;

[0034] Figure 3 A waveform diagram of a narrowband spike interference type provided for an embodiment of this application;

[0035] Figure 4 This is a waveform diagram of a sawtooth interference type provided in an embodiment of this application;

[0036] Figure 5 This is a diagram of a macro base station antenna array provided in an embodiment of this application;

[0037] Figure 6 A flowchart illustrating another interference source localization method provided in this application embodiment;

[0038] Figure 7 An interference source localization model diagram provided in an embodiment of this application;

[0039] Figure 8 This is a schematic diagram of an interference source locating device provided in an embodiment of this application;

[0040] Figure 9 This is a schematic diagram of the interference source locating device provided in an embodiment of this application. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] It should be noted that in the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0043] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" are not intended to limit the quantity or execution order. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0044] In recent years, users in areas with weak network signal coverage have introduced signal amplifiers such as repeaters to enhance signal strength. While these amplifiers improve signal strength for some users, they also cause problems for other users in the same cell, such as increased call drop rates, reduced communication quality, decreased base station coverage, and network congestion. Therefore, signal amplifiers are a source of interference, and it is necessary to locate and eliminate these sources of interference.

[0045] In existing technologies, network data-based location methods are typically used. This involves collecting interference data from multiple cells to identify the type of interference experienced by each cell. Cells with the same type of interference are then clustered. Cells clustered to the same cluster center are further processed, and the difference in interference intensity received at different nodes is converted into path loss difference. This difference is then combined with a propagation model to calculate the location of the interference source. However, the antenna directions of cells within the same cluster are inconsistent, leading to inaccurate location of the interference source.

[0046] Against this background, embodiments of this application provide an interference source localization method. Based on the prior art, the method also considers the antenna normal direction of the cell. It should be understood that the antenna normal direction of the cell directly affects the receiving gain of the cell antenna, and the receiving gain of the cell antenna can reflect the degree and directionality of interference in the cell. Therefore, by taking into account the antenna normal direction of the cell based on the prior art, the accuracy of locating interference sources can be improved.

[0047] The embodiments provided in this application will now be described in detail with reference to the accompanying drawings.

[0048] like Figure 1 The diagram shown is a flowchart illustrating an interference source localization method provided in an embodiment of this application. This method is applied to an interference source localization device and includes the following steps:

[0049] S101. Obtain the location information and interference type of multiple cells, including the first cell.

[0050] The types of interference can include broadband interference, narrowband spike interference, or sawtooth interference.

[0051] In some embodiments, the frequency domain waveform of the physical resource block (PRB) of multiple cells, including the first cell, can be obtained, and the interference types of the multiple cells, including the first cell, can be distinguished based on the frequency domain waveform of the PRB.

[0052] For example, using a 1-hour interval as the granularity for noise floor analysis, the horizontal axis of the frequency domain waveform represents the 0th to Nth PRBs. When the bandwidth is 5MHz, N is 24; when the bandwidth is 10MHz, N is 51; and when the bandwidth is 20MHz, N is 105. To avoid the impact of traffic volume on PRB noise floor, interference localization can be performed by selecting the PRB noise floor during off-peak hours of each cell, such as 5 AM. Figures 2 to 4 The image shows the frequency domain waveform of the PRB noise floor obtained with a bandwidth of 10MHz. Figure 2 The image shows a waveform diagram of a broadband interference type. Figure 3 The image shows a waveform diagram of a narrowband spike interference type. Figure 4 The diagram shown is a waveform representation of a sawtooth interference type.

[0053] In some embodiments, obtaining the PRB noise floor frequency domain waveform of each of multiple cells, including the first cell, may include the following steps:

[0054] Step a1: Monitor the PRB noise floor of each of the multiple cells, including the first cell.

[0055] Step a2: Convert the PRB noise floor of each of the multiple cells, including the first cell, into PRB electrical signals.

[0056] Step a3: Draw the PRB noise floor frequency domain waveform based on the PRB electrical signal.

[0057] In some embodiments, experimental tools such as MATLAB can be used to plot the frequency domain waveform of the PRB noise floor.

[0058] In some embodiments, the first cell is the cell from which the interference source is to be located.

[0059] Optionally, a coordinate system can be established so that multiple cells, including the first cell, have their own unique coordinates in the coordinate system. These unique coordinates are used to indicate the location information of each cell, including the first cell.

[0060] S102. Based on the location information and interference type of each of the multiple cells, determine the set of cells from the multiple cells that are used to locate the interference source of the first cell.

[0061] The cell set includes a first cell and multiple second cells; the distance between the second cell and the first cell is within a preset distance, and the interference type of the second cell is the same as that of the first cell.

[0062] In some embodiments, the preset distance can be customized, for example, the preset distance can be 1 km (kilometer, km).

[0063] For example, if the interference type of the first cell is broadband interference, and there are three other cells within 1KM of the first cell that also have broadband interference, then these three cells are the second cells. The first cell and the second cell together constitute the set of cells that are the interference sources of the first cell, that is, the set of cells that are the interference sources of the first cell contains a total of four cells.

[0064] S103. Obtain the received signal strength value and antenna normal direction of each cell in the cell set.

[0065] Optionally, if the interference type of the cell is broadband interference, the received signal strength value of the cell is the mean value of the cell's PRB noise floor.

[0066] Optionally, if the interference type of the cell is narrowband spike interference, the received signal strength value of the cell is the value of the spike in the interference frequency domain waveform diagram of the cell.

[0067] Optionally, if the interference type of the cell is sawtooth interference, the received signal strength value of the cell is the average value of the cell's PRB noise floor.

[0068] In some embodiments, if the interference type of a cell is narrowband spike interference and there are multiple spike values ​​in the interference frequency domain waveform, then the value of each spike is used as the received signal strength value of a group of cells.

[0069] In some embodiments, the received signal strength indicator (RSSI) of a cell is an indication of the received signal strength of the cell and can be used as a basis for judging system interference. It is applied to distance measurement between a transmitter and a receiver, where the transmitter can be a mobile phone and the receiver can be a base station.

[0070] Understandably, when radio waves or sound waves propagate through a medium, the signal power attenuates with the propagation distance. Therefore, by inputting the known signal power transmitted by the transmitter and the signal power received by the receiver into a signal attenuation model related to distance, the distance between the transmitter and receiver can be output. If the output distance is greater than the actual distance, then interference is determined to exist in the system.

[0071] In some embodiments, the antenna normal direction is closely related to the antenna receiving gain. The larger the angle between the interference source and the antenna normal direction, the smaller the antenna receiving gain, which in turn reflects the smaller the interference of the interference source on the cell.

[0072] In some embodiments, the antenna receiving gain can be obtained from engineering parameters, wherein the base station receiving gain G satisfies the following formula (1):

[0073]

[0074] Where θ is the angle between the interference source and the normal direction of the cell antenna, -180≤θ≤180, θ 3dB Am represents the angle of the directional antenna at the base station, and Am represents the maximum antenna gain, which can be obtained from engineering parameters.

[0075] Taking a macro base station as an example, a macro base station uses a 65° directional antenna, i.e., θ 3dB =65°, such as Figure 5 The diagram shown is of a macro base station antenna array.

[0076] S104. Determine the location information of the interference source based on the location information of each cell in the cell set, the received signal strength value, and the antenna normal direction.

[0077] In some embodiments, such as Figure 6 As shown, step S104 can be specifically implemented as follows:

[0078] S1041. For each cell in the cell set, determine the first path loss function of the cell based on the cell's location information, received signal strength value, and antenna normal direction.

[0079] In some embodiments, the first path loss function satisfies the following formula (2):

[0080] L = P - RSSI + G (Formula 2)

[0081] Where G is the receive gain of the base station in the cell, in dB, RSSI is the received signal strength of the cell, P is the transmit power of the interference source, and L is the path loss of each cell.

[0082] S1042. For each cell in the cell set, determine the second path loss function of the cell based on the cell's location information and the cell's antenna height.

[0083] The antenna height of a cell includes the height of its transmitting antenna and the height of its receiving antenna.

[0084] In some embodiments, the second path loss function satisfies the following formula (3):

[0085] L=88+40lg d+20lg f-20lg hthr–K Formula (3)

[0086] Where d is the distance between the cell and the interference source in km; f is the operating frequency of the interference source in MHz; ht is the height of the transmitting antenna of the interference source in the target cell in meters; hr is the height of the receiving antenna of the base station in the target cell in meters; and K is the terrain correction factor.

[0087] In some embodiments, the second path loss function may also be called the Egli propagation model, which was proposed by Joan Egli in 1957 based on measured data. The Egli propagation model is a simplified wireless propagation model on irregular terrain, and can also be called a propagation model on hillside terrain with an average slope height of 50 feet.

[0088] S1043. Determine the location information of the interference source based on the first path loss function and the second path loss function of each cell in the cell set.

[0089] In some embodiments, the relationship between path loss value L and received signal strength value RSSI can be derived by converting the first path loss function formula (2) and the second path loss function formula (3). The difference in path loss value between each cell in the cell set can be calculated based on the relationship between path loss value L and received signal strength value RSSI. The location information of the interference source can be determined based on the difference in path loss value.

[0090] The following describes a method for locating interference sources provided in this application, using a specific example. For instance... Figure 7The diagram shown is a localization model of an interference source provided in an embodiment of this application. Figure 7 It can be seen that this interference source localization model is constructed based on a set of 3 cells, where P0 is the first cell, P1 and P2 are the second cells, and P is the interference source. For ease of calculation, a coordinate system can be pre-established, with the horizontal axis as the x-axis and the vertical axis as the y-axis. Each cell in the set is located in the first quadrant of the coordinate system. The position information of the first cell P0 in the coordinate system can be represented as P0(x0, y0), the position information of the second cell P1 in the coordinate system can be represented as P1(x1, y1), the position information of the second cell P2 in the coordinate system can be represented as P2(x2, y2), and the position information of the interference source P in the coordinate system can be represented as P(x, y).

[0091] In some embodiments, d can be used to represent the distance between the cell and the interference source, θ can be used to represent the angle between the interference source and the antenna normal direction of the cell, and ε can be used to represent the azimuth angle of the cell.

[0092] like Figure 7 As shown, d0 is the distance between the first cell P0 and the interference source P, d1 is the distance between the second cell P1 and the interference source P, and d2 is the distance between the second cell P2 and the interference source P; θ0 is the angle between the antenna normal direction of the interference source P and the first cell P0, θ1 is the angle between the antenna normal direction of the interference source P and the second cell P1, and θ2 is the angle between the antenna normal direction of the interference source P and the second cell P2; ε0 is the azimuth angle of the first cell P0, ε1 is the azimuth angle of the second cell P1, and ε2 is the azimuth angle of the second cell P2.

[0093] In some embodiments, since the base station receiving gain formula (1) is divided into two segments, perpendicular lines can be drawn to the antenna normals of the first cell P0, the second cell P1, and the second cell P2 respectively, and extended until they intersect each other, dividing the plane into 7 regions, such as... Figure 7 As shown, the seven regions are represented as S1, S2, S3, S4, S5, S6 and S7, and the base station receiving gain will be different in the seven regions.

[0094] In some embodiments, as can be seen from the first path loss function formula (2), the path loss value of the first cell P0 satisfies the following relationship:

[0095] L0 = P - RSSI0 + G0

[0096] Where L0 is the path loss value of the first cell P0, RSSI0 is the received signal strength value of the first cell P0, and G0 is the received gain of the base station of the first cell P0.

[0097] The path loss value of the second cell P1 satisfies the following relationship:

[0098] L1 = P - RSSI1 + G1

[0099] Where L1 is the path loss value of the second cell P1, RSSI1 is the received signal strength value of the second cell P1, and G1 is the received gain of the base station of the second cell P1.

[0100] The path loss L2, received signal strength RSSI2, and base station receive gain G2 of the second cell P2 satisfy the following relationship:

[0101] L2 = P - RSSI2 + G2

[0102] Where L2 is the path loss value of the second cell P2, RSSI2 is the received signal strength value of the second cell P2, and G2 is the receive gain of the base station of the second cell P2.

[0103] In some embodiments, as can be seen from the second path loss function formula (3), the path loss value of the first cell P0 also satisfies the following relationship:

[0104] L0=88+40lg d0+20lg f-20lg hth r0–K

[0105] Where d0 is the distance between the first cell P0 and the interference source P, and hr0 is the receiving antenna height of the base station in the first cell P0. For the description of f and ht, please refer to the relevant description in step S1042 above, which will not be repeated here.

[0106] The path loss value of the second cell P1 also satisfies the following relationship:

[0107] L1=88+40lg d1+20lg f-20lg hth r1–K

[0108] Where d1 is the distance between the second cell P1 and the interference source P, and hr1 is the receiving antenna height of the base station in the second cell P1. For the description of f and ht, please refer to the relevant description in step S1042 above, which will not be repeated here.

[0109] The path loss value of the second cell P2 also satisfies the following relationship:

[0110] L2=88+40lg d2+20lg f-20lg ht hr2–K

[0111] Where d2 is the distance between the second cell P2 and the interference source P, and hr2 is the height of the receiving antenna of the base station in the second cell P2. For the description of f and ht, please refer to the relevant description in step S1042 above, which will not be repeated here.

[0112] Understandably, the above relation can be converted into the following relation:

[0113] RSSI1-RSSI0=L0-L1+G1-G0=40lg d0 / d1+20lg hr1 / hr0+G1-G0

[0114] RSSI2-RSSI0=L0-L2+G2-G0=40lg d0 / d2+20lg hr2 / hr0+G2-G0

[0115] According to the base station receiving gain formula (1), the receiving gain G0 of the base station in the first cell P0, the receiving gain G1 of the base station in the second cell P1, and the receiving gain G2 of the base station in the second cell P2 satisfy the following relationships:

[0116]

[0117]

[0118]

[0119] Among them, A m 0 represents the maximum antenna gain of the base station within the first cell P0, A m 1 represents the maximum antenna gain of the base station within the second cell P1, A m 2 represents the maximum antenna gain of the base station within the second cell P2.

[0120] In some embodiments, the unit vector of the antenna normal direction of the first cell P0 can be represented as: The unit vector of the antenna normal direction of the second cell P1 can be expressed as: The unit vector of the antenna normal direction of the second cell P2 can be expressed as: Substituting the unit vectors of the antenna normal directions of the first cell P0 and the second cells P1 and P2 into the above equations, we can obtain the following equations for the angles θ0 between the interference source P and the antenna normal direction of the first cell P0, θ1 between the interference source P and the antenna normal direction of the second cell P1, and θ2 between the interference source P and the antenna normal direction of the second cell P2:

[0121]

[0122]

[0123]

[0124] Understandably, the above relationship can be transformed into the following system of equations:

[0125]

[0126]

[0127] Solve the above set of equations sequentially in regions S1, S2, S3, S4, S5, S6 and S7. The solution to the set of equations indicates the location information of the interference source.

[0128] In some embodiments, the location information of the interference source needs to be verified. The solution to the system of equations obtained in a region indicates the location information of the interference source in that region. If the location information of the interference source is not in that region, it is an invalid solution, indicating that there is no interference source in that region.

[0129] For example, in region S1, When G2 is 0, the location of the interference source needs to be verified. If the location information indicated by the solution of the equation system is within the S1 region, then the solution of the equation system indicates the location information of the interference source. If the location information indicated by the solution of the equation system is not within the S1 region, then the solution of the equation system is invalid, indicating that there is no interference source within the S1 region.

[0130] For example, in region S2, If both G1 and G2 are 0, the location of the interference source needs to be verified. If the location information indicated by the solution of the equation system is within the S2 region, then the solution of the equation system indicates the location information of the interference source. If the location information indicated by the solution of the equation system is not within the S2 region, then the solution of the equation system is invalid, indicating that there is no interference source within the S2 region.

[0131] For example, in region S3, G0, G1, and G2 are all 0. The location of the interference source needs to be verified. If the location information indicated by the solution of the equation system is in region S3, then the solution of the equation system indicates the location information of the interference source. If the location information indicated by the solution of the equation system is not in region S3, then the solution of the equation system is invalid, indicating that there is no interference source in region S3.

[0132] For example, in the S4 region, If both G0 and G2 are 0, the location of the interference source needs to be verified. If the location information indicated by the solution of the equation system is within the S4 region, then the solution of the equation system indicates the location information of the interference source. If the location information indicated by the solution of the equation system is not within the S4 region, then the solution of the equation system is invalid, indicating that there is no interference source within the S4 region.

[0133] For example, in the S5 region The location of the interference source needs to be verified. If the location information indicated by the solution of the equation system is within the S5 region, then the solution of the equation system indicates the location information of the interference source. If the location information indicated by the solution of the equation system is not within the S5 region, then the solution of the equation system is invalid, indicating that there is no interference source within the S5 region.

[0134] For example, in the S6 region, When G0 is 0, the location of the interference source needs to be verified. If the location information indicated by the solution of the equation system is within the S6 region, then the solution of the equation system indicates the location information of the interference source. If the location information indicated by the solution of the equation system is not within the S6 region, then the solution of the equation system is invalid, indicating that there is no interference source within the S6 region.

[0135] For example, in the S7 region, When G1 is 0, the location of the interference source needs to be verified. If the location information indicated by the solution of the equation system is within the S7 region, then the solution of the equation system indicates the location information of the interference source. If the location information indicated by the solution of the equation system is not within the S7 region, then the solution of the equation system is invalid, indicating that there is no interference source within the S7 region.

[0136] In some embodiments, if the received signal strength value of at least one cell in the cell set, including the first cell, is not unique, then there are multiple interference sources. The above steps S101 to S104 are repeated to locate the interference source until the received signal strength value data of all cells have been traversed.

[0137] The interference source localization method provided in this application, based on existing technology, also takes into account the antenna normal direction of the cell, thereby improving the accuracy of locating interference sources.

[0138] It is understandable that the antenna normal direction of a cell is closely related to the receiving gain of the base station within the cell. The larger the angle between the interference source and the antenna normal direction, the smaller the antenna receiving gain, which in turn reflects the smaller the interference of the interference source on the cell.

[0139] It should be understood that antenna receiving gain is directional, and the receiving gain of an antenna varies in different directions. In this embodiment, the set of cells containing the interference source to be located is divided into seven different regions on a plane. Each region has a different direction relative to the cells, and therefore a different receiving gain relative to the base stations within the cells. Different base station receiving gain formulas are used to calculate the base station receiving gain for each region. Based on the base station receiving gain of each region, the interference source is located, making the location of the interference source more accurate.

[0140] In an exemplary embodiment, this application also provides an interference source localization device. This interference source localization device may include one or more functional modules for implementing the interference source localization method described in the above method embodiments.

[0141] For example, Figure 8 This is a schematic diagram of an interference source locating device provided in an embodiment of this application. Figure 8 As shown, the interference source locating device includes: an acquisition unit 801 and a processing unit 802, which are connected together.

[0142] The acquisition unit 801 is used to acquire the location information and interference type of multiple cells, including the first cell.

[0143] The processing unit 802 is used to determine a set of cells for locating the interference source of the first cell from multiple cells based on the location information and interference type of each cell; wherein the set of cells includes the first cell and multiple second cells; the distance between the second cells and the first cell is within a preset distance, and the interference type of the second cells is the same as the interference type of the first cell.

[0144] The acquisition unit 801 is also used to acquire the received signal strength value and antenna normal direction of each cell in the cell set.

[0145] The processing unit 802 is also used to determine the location information of the interference source based on the location information of each cell in the cell set, the received signal strength value, and the antenna normal direction.

[0146] In some embodiments, the processing unit 802 is specifically configured to: determine a first path loss function for a cell based on the cell's location information, received signal strength value, and the antenna normal direction of the cell; determine a second path loss function for a cell based on the cell's location information and the cell's antenna height; and determine the location information of the interference source based on the first path loss function and the second path loss function of each cell in the cell set.

[0147] In an exemplary embodiment, this application also provides a computer device, which may be the interference source locating device in the above embodiments. Figure 9 This is a schematic diagram of the interference source locating device provided in this embodiment. Figure 9 As shown, the interference source localization device may include a processor 901 and a memory 902. The memory 902 stores computer execution instructions; the processor 901 executes the computer execution instructions stored in the memory 902, causing the server to implement the interference source localization method in the aforementioned example embodiment.

[0148] In an exemplary embodiment, this application also provides a computer-readable storage medium storing computer program instructions thereon; when the computer program instructions are executed by a computer device, the computer device performs the method described in the foregoing embodiments. The computer-readable storage medium may be a non-transitory computer-readable storage medium, such as a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device.

[0149] In an exemplary embodiment, this application also provides a computer program product that, when run on a computer, causes the computer to execute the aforementioned related method steps to implement the interference source localization method in the above embodiments.

[0150] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for locating interference sources, characterized in that, The method includes: Obtain the location information and interference type of multiple cells, including the first cell; Based on the location information and interference type of each of the plurality of cells, a set of cells for locating the interference source of the first cell is determined from the plurality of cells; wherein, the set of cells includes the first cell and a plurality of second cells; the distance between the second cells and the first cell is within a preset distance, and the interference type of the second cells is the same as the interference type of the first cell; Obtain the received signal strength value and antenna normal direction of each cell in the cell set; For each cell in the cell set, a first path loss function for the cell is determined based on the cell's location information, received signal strength value, and antenna normal direction. For each cell in the cell set, a second path loss function for the cell is determined based on the cell's location information and antenna height. The location information of the interference source is determined based on the first path loss function and the second path loss function of each cell in the cell set.

2. The method according to claim 1, characterized in that, The types of interference include broadband interference, narrowband spike interference, or sawtooth interference.

3. The method according to claim 2, characterized in that, When the interference type of the cell is broadband interference, the received signal strength value of the cell is the average value of the physical resource block (PRB) noise floor of the cell. When the interference type of the cell is narrowband spike interference, the received signal strength value of the cell is the value of the spike in the interference frequency domain waveform diagram of the cell; When the interference type of the cell is sawtooth interference, the received signal strength value of the cell is the mean value of the PRB noise floor of the cell.

4. The method according to claim 1, characterized in that, The first path loss function satisfies the following relationship: L = P - RSSI + G Wherein, G is the receive gain of the base station in the cell, in dB; RSSI is the received signal strength of the cell; P is the transmit power of the interference source; and L is the path loss of each cell.

5. The method according to claim 1, characterized in that, The second path loss function satisfies the following relationship: L =88 +40lg d+20lg f-20lg hthr –K Where d is the distance between the cell and the interference source, in km; f is the operating frequency of the interference source, in MHz; ht is the height of the transmitting antenna of the interference source in the cell, in meters; hr is the height of the receiving antenna of the base station in the cell, in meters; and K is the terrain correction factor.

6. An interference source locating device, characterized in that, include: The acquisition unit is used to acquire the location information and interference type of multiple cells, including the first cell. The processing unit is configured to determine a set of cells for locating the interference source of the first cell from the plurality of cells based on the location information and interference type of each of the plurality of cells; wherein the set of cells includes the first cell and a plurality of second cells; the distance between the second cells and the first cell is within a preset distance, and the interference type of the second cells is the same as the interference type of the first cell; The acquisition unit is also used to acquire the received signal strength value and antenna normal direction of each cell in the cell set; The processing unit is further configured to, for each cell in the cell set, determine a first path loss function for the cell based on the cell's location information, received signal strength value, and antenna normal direction; determine a second path loss function for each cell in the cell set based on the cell's location information and antenna height; and determine the location information of the interference source based on the first and second path loss functions of each cell in the cell set.

7. The interference source locating device according to claim 6, characterized in that, The types of interference include broadband interference, narrowband spike interference, or sawtooth interference.

8. A computer device, characterized in that, include: Processor and memory; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the interference source localization method as described in any one of claims 1-5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by the processor, implement the interference source localization method as described in any one of claims 1-5.

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