CN116669180A - Interference positioning method and device, electronic equipment and storage medium - Google Patents
Interference positioning method and device, electronic equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
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Abstract
The application discloses an interference positioning method, an interference positioning device, electronic equipment and a storage medium, which relate to the field of communication and are used for solving the problem that an interference repeater cannot be accurately positioned at the present stage, and comprise the following steps: determining initial coordinates of an interference source according to base station base noise parameters of at least one co-located cell; the method comprises the steps that an interference source is located in a cell to be located, the distance between each co-located cell in at least one co-located cell and the cell to be located is smaller than a preset distance threshold, and the interference type of each co-located cell and the cell to be located is the same; calculating a Received Signal Strength Indication (RSSI) error according to the spatial propagation model and the antenna receiving gain of each co-located cell; and determining the final coordinates of the interference source according to the initial coordinates and the RSSI errors. The application is used for positioning the repeater which causes interference in the cell.
Description
Technical Field
The present application relates to the field of communications, and in particular, to an interference positioning method, an interference positioning device, an electronic device, and a storage medium.
Background
In the network evolution process of 800M and 900M, external uplink interference has been an important problem in network deployment and optimization. In particular, some illegal repeater stations installed by users have poor performance of various devices, which can cause serious interference to the uplink of the network. The method for positioning the uplink interference source adopted in the prior art cannot accurately position the repeater causing interference.
Disclosure of Invention
The application provides an interference positioning method, an interference positioning device, electronic equipment and a storage medium, which can solve the problem that an interference repeater cannot be accurately positioned at the present stage.
In a first aspect, the present application provides an interference positioning method, including: determining initial coordinates of an interference source according to base station base noise parameters of at least one co-located cell; the method comprises the steps that an interference source is located in a cell to be located, the distance between each co-located cell in at least one co-located cell and the cell to be located is smaller than a preset distance threshold, and the interference type of each co-located cell and the cell to be located is the same; calculating a Received Signal Strength Indication (RSSI) error according to the spatial propagation model and the antenna receiving gain of each co-located cell; and determining the final coordinates of the interference source according to the initial coordinates and the RSSI errors.
Based on the technical scheme, the application calculates the interference signal intensity difference between the co-located cells by selecting the co-located cells of the cells where the interference sources are located and acquiring the working parameters of the co-located cells, and then positions the interference sources by combining a positioning model, a space propagation model and a lattice traversal method. Because the difference of the antenna gains in different directions of the cells is considered when the interference signal intensity difference between different cells is calculated, the interference positioning method provided by the application can give consideration to the difference of the actual receiving gains of the receiving antennas of different cells when the repeater causing interference is positioned, and improves the positioning precision and efficiency.
In one possible implementation, the method further includes: acquiring a base station background noise parameter; the base station base noise parameters are used for representing interference conditions received by the base stations corresponding to the co-located cells.
In one possible implementation manner, the base station noise floor parameters include base station average noise floor and interference type information, and the determining the initial coordinates of the interference source according to the base station noise floor parameters of at least one co-located cell specifically includes: acquiring longitude and latitude of a plurality of target cells; wherein the plurality of target cells comprise at least one cooperative positioning cell and a cell to be positioned; establishing a three-dimensional space coordinate system, and converting longitude and latitude of a plurality of target cells into three-dimensional coordinate data; determining at least one co-located cell from a plurality of target cells according to the interfered type information; and determining the coordinates of the highest point of the background noise in at least one co-located cell as the initial coordinates of the interference source.
In one possible implementation, before calculating the RSSI error according to the spatial propagation model and the antenna reception gain of each co-located cell, the method further comprises: projecting a base station corresponding to at least one cooperative positioning cell into a three-dimensional space coordinate system to determine a positioning model; determining an included angle value of an interference source relative to a normal of a base station antenna corresponding to each cooperative positioning cell based on a positioning model; and determining the antenna receiving gain of each co-located cell according to the included angle value of the interference source relative to the normal of the base station antenna corresponding to each co-located cell.
In one possible implementation, the calculating the RSSI error according to the spatial propagation model and the antenna receiving gain of each co-located cell specifically includes: determining a first relation to be satisfied between theoretical coordinates of an interference source and RSSI (received signal strength indicator) of each co-located cell according to average base noise of a base station of each co-located cell, a space propagation model and antenna receiving gain of each co-located cell; and determining the RSSI error according to the actually measured RSSI of each cooperative positioning cell and the first relation.
In one possible implementation, determining the final coordinates of the interference source according to the initial coordinates and the RSSI error specifically includes: starting from the initial coordinates, updating coordinates and RSSI errors of the interference sources one by one according to a lattice traversal method; after updating for the preset times, the coordinate corresponding to the minimum RSSI error is determined as the final coordinate of the interference source.
In a second aspect, the present application provides an interference locating device comprising: a processing unit; the processing unit is used for determining the initial coordinates of the interference source according to the base station noise floor parameters of at least one cooperative positioning cell; the method comprises the steps that an interference source is located in a cell to be located, the distance between each co-located cell in at least one co-located cell and the cell to be located is smaller than a preset distance threshold, and the interference type of each co-located cell and the cell to be located is the same; the processing unit is also used for calculating the RSSI error of the received signal strength indication according to the space propagation model and the antenna receiving gain of each cooperative positioning cell; and the processing unit is also used for determining the final coordinates of the interference source according to the initial coordinates and the RSSI errors.
In one possible implementation, the interference locating device further includes: an acquisition unit; the acquisition unit is used for acquiring the base station noise parameters; the base station base noise parameters are used for representing interference conditions received by the base stations corresponding to the co-located cells.
In a possible implementation manner, the acquiring unit is further configured to acquire longitude and latitude of a plurality of target cells; wherein the plurality of target cells comprise at least one cooperative positioning cell and a cell to be positioned; the processing unit is also used for establishing a three-dimensional space coordinate system and converting the longitude and latitude of the plurality of target cells into three-dimensional coordinate data; the processing unit is further used for determining at least one cooperative positioning cell from the plurality of target cells according to the interfered type information; and the processing unit is also used for determining the coordinates of the highest point of the background noise in at least one co-located cell as the initial coordinates of the interference source.
In a possible implementation manner, the processing unit is further configured to project a base station corresponding to at least one co-located cell in a three-dimensional space coordinate system, and determine a location model; the processing unit is further used for determining an included angle value of the interference source relative to the normal line of the base station antenna corresponding to each cooperative positioning cell based on the positioning model; and the processing unit is also used for determining the antenna receiving gain of each co-located cell according to the included angle value of the interference source relative to the normal of the base station antenna corresponding to each co-located cell.
In a possible implementation manner, the processing unit is further configured to determine, according to the average base noise of the base station of each co-located cell, the spatial propagation model, and the antenna receiving gain of each co-located cell, a first relationship that should be satisfied between the theoretical coordinate of the interference source and the RSSI between each co-located cell; and the processing unit is also used for determining the RSSI error according to the actually measured RSSI of each cooperative positioning cell and the first relation.
In a possible implementation manner, the processing unit is further configured to update the coordinates and the RSSI errors of the interference sources one by one according to the lattice traversal method, starting from the initial coordinates; and the processing unit is also used for determining the coordinate corresponding to the minimum RSSI error as the final coordinate of the interference source after the preset times of updating.
In a third aspect, the present application provides a computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by an electronic device of the present application, cause the electronic device to perform the method of interference localization as described in any one of the possible implementations of the first aspect and the first aspect.
In a fourth aspect, the present application provides an electronic device comprising: a processor and a memory; wherein the memory is for storing one or more programs, the one or more programs comprising computer-executable instructions, which when executed by the electronic device, cause the electronic device to perform the method of interference localization as described in any of the possible implementations of the first aspect and the first aspect.
In a fifth aspect, the application provides a computer program product comprising instructions which, when run on a computer, cause an electronic device of the application to perform the method of interference localization as described in any one of the possible implementations of the first aspect and the first aspect.
In a sixth aspect, the present application provides a chip system, the chip system being applied to an interference location device; the system-on-chip includes one or more interface circuits, and one or more processors. The interface circuit and the processor are interconnected through a circuit; the interface circuit is configured to receive a signal from a memory of the interference locating device and to send the signal to the processor, the signal including computer instructions stored in the memory. When the processor executes the computer instructions, the interference locating device performs the interference locating method according to the first aspect and any one of its possible designs.
In the present application, the names of the above-mentioned interference locating means do not constitute a limitation on the devices or functional units themselves, which may appear under other names in a practical implementation. Insofar as the function of each device or functional unit is similar to the present application, it falls within the scope of the claims of the present application and the equivalents thereof.
Drawings
Fig. 1 is a schematic diagram of an architecture of an interference positioning system according to an embodiment of the present application;
fig. 2 is a schematic flow chart of an interference positioning method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a background noise frequency domain waveform according to an embodiment of the present application;
FIG. 4 is a diagram of a dot matrix traversed according to an embodiment of the present application;
fig. 5 is a flow chart of another interference positioning method according to an embodiment of the present application;
fig. 6 is a flow chart of another interference positioning method according to an embodiment of the present application;
FIG. 7 is a schematic diagram of modeling a positioning model according to an embodiment of the present application;
fig. 8 is a flow chart of another interference positioning method according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an interference positioning device according to an embodiment of the present application;
Fig. 10 is a schematic structural diagram of another interference positioning device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The character "/" herein generally indicates that the associated object is an "or" relationship. For example, A/B may be understood as A or B.
The terms "first" and "second" in the description and in the claims of the application are used for distinguishing between different objects and not for describing a particular sequential order of objects. For example, the first edge service node and the second edge service node are used to distinguish between different edge service nodes, rather than to describe a characteristic order of the edge service nodes.
Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.
In addition, in the embodiments of the present application, words such as "exemplary", or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary", or "such as" is intended to present concepts in a concrete fashion.
In the network evolution process of 800M and 900M, external uplink interference has been an important problem in network deployment and optimization. Negative effects caused by uplink interference include: the system call drop rate is increased, the coverage area of the base station is reduced, and the call quality is reduced, so that the network index and the call experience of the user are seriously affected.
The interference outside the system mainly comprises spurious interference, faults of radio equipment in fixed operation and the like, and especially illegal repeater stations which are installed by some users. The repeater has low cost, and various devices contained in the repeater have poor performance, so that the repeater can cause stronger uplink interference to a system.
At present, a method for positioning an uplink interference source is generally adopted in the industry, and is greatly dependent on experience judgment of network optimization personnel, so that the requirements on the professional level and working experience of the network optimization personnel are high. On the other hand, although there is a positioning method using network data, a scheme of acquiring network management data of a plurality of cells and processing to obtain the position of an interference source, the scheme does not consider the actual receiving gain difference of different cells when calculating the interference intensity difference, so that the positioning result is inaccurate.
Illustratively, a method for locating an interference source by using network data is provided in the prior art as follows:
taking an urban scene as an example, taking an Egli propagation model as a distance model, the following formula 1 is satisfied:
L＝88+40lgd+20lgf-20lgh t h r -G formula 1
Wherein L represents the path loss, d represents the distance between transmission and reception, f represents the frequency, h t Indicating transmitter height, h r Representing receiver altitude, G represents a terrain correction factor.
Furthermore, the relation between the interference source transmission power and the base station reception power satisfies the following equation 2:
RSSI = P-L equation 2
Wherein, RSSI represents the base station received power, and P represents the interference source transmitting power.
The power difference of two different base stations receiving the same interferer signal satisfies the following equation 3:
RSSI 0 -RSSI i ＝L i -L 0 ＝40lgd i /d 0 +20lghr 0 /hr i equation 3
K i0 ＝d i /d 0 ＝10 (RSSI0-RSSIi-20lg hr0/hri)/40
Wherein RSSI 0 Indicating the received power of the primary cell, RSSI i Representing the received power, k, of the ith cell io Representing the distance ratio between every two cells, and obtaining according to the analysis geometry: when K is io When electromagnetic interference occurs, the interference point is on a circle with a certain distance ratio from the two cells, and the center of the circle with the distance ratio is positioned on a straight line connecting the two cells. Selecting 3 cell points p in interference monitoring queue 0 ＝(x 0 ,y 0 )，p 1 ＝(x 1 ,y 1 )，p 2 ＝(x 2 ,y 2 ) Setting P 0 The electromagnetic interference source is positioned at the longitude and latitude p of the position serving as the main cell x = (x, y) where (x, y) represents longitude and latitude, the monitored level of the cell changes according to the interference source signal strength. The heights of the cell receiving antennas are h in sequence 0 ，h 1 ，h 2 Thus, equation 4 can be obtained:
wherein d i0 Representing the fixed distance, sigma, between the i-th cell and the primary cell i Represents k i0 Square of (d). As can be seen from equation 4, the electromagnetic observation site and the electromagnetic interference point are on the equation of a standard circle, so that when electromagnetic interference occurs, the main cell and other cells can locate the interference source on the circle of a distance ratio. When using selected p 0 ，p 1 ，p 2 When the electromagnetic interference sources are determined by 3 cells at the same time, two circles C1 and C2 with a distance ratio can be determined, the intersection point of the two electromagnetic positioning circles is the position of the electromagnetic interference source, and the position coordinates are the longitude and the latitude of the electromagnetic interference source.
It is clear that the above scheme does not consider the actual receiving gain difference of different cells when calculating the interference intensity difference, so the accuracy of the positioning result is poor.
In view of this, in order to solve the defects existing in the prior art, the present application provides an interference positioning method and device, which calculates the interference signal intensity difference between co-located cells by selecting the co-located cells of the cells where the interference sources are located and obtaining the working parameters of the co-located cells, and then positions the interference sources by combining a positioning model, a spatial propagation model and a lattice traversal method. Because the difference of the antenna gains in different directions of the cells is considered when the interference signal intensity difference between different cells is calculated, the interference positioning method provided by the application can give consideration to the difference of the actual receiving gains of the receiving antennas of different cells when the repeater causing interference is positioned, and improves the positioning precision and efficiency.
As shown in fig. 1, fig. 1 is a schematic architecture diagram of an interference positioning system according to the present application, where the interference positioning system includes: an interference source 101, a cell to be located 102, a co-located cell 103.
Wherein the interfering source 101 is located in a cell 102 to be located. Specifically, the interference source 101 may be an illegal repeater station that is private to the user, or other devices that can cause interference.
The interference type of the co-located cell 103 is the same as the interference type of the cell 102 to be located. And, the distance between each co-located cell 103 and the cell 102 to be located is smaller than a preset distance threshold. The preset distance threshold may be set to 1000 meters, or may be set according to requirements in practical application, which is not particularly limited in the present application.
It should be noted that the number of the selected co-located cells 103 may be plural, and the number of the co-located cells 103 exemplarily shown in fig. 1 is 3. Fig. 1 is merely an exemplary frame diagram, and the number of co-located cells 103 is not limited. Further, the names of the respective parts included in fig. 1 are not limited.
The application scenario of the embodiment of the application is not limited. The system architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution provided in the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.
As shown in fig. 2, fig. 2 is a schematic flow chart of an interference positioning method provided by the present application, which includes the following steps:
s201, the interference positioning device determines initial coordinates of an interference source according to base station noise parameters of at least one co-located cell.
Wherein the interference source is located in the cell to be located.
It should be noted that, the distance between each co-located cell in the at least one co-located cell and the cell to be located is smaller than a preset distance threshold. For example, the preset distance threshold may be set to 1000 meters.
And each co-located cell is the same as the interference type of the cell to be located.
Optionally, the initial coordinates of the interference source are coordinates of a highest point of the background noise in at least one co-located cell.
In one possible implementation, the source of interference may be an illegal repeater station that is private to the user.
Optionally, the base station noise floor parameter is used to characterize the interference situation suffered by the corresponding base station of the co-located cell. In particular, the base station floor noise parameters may include an average floor noise of the base station and a floor noise of each physical resource block (Physical Resource Block, PRB). The average background noise of the base station is used for evaluating the interference degree of the cell, and the background noise of each PRB is used for judging the interference type of the cell.
Fig. 3 is a schematic diagram illustrating a background noise frequency domain waveform corresponding to a co-located cell under different interference types caused when an interference source is a repeater. In fig. 3, a portion represents a background noise frequency domain waveform under wideband interference, b portion represents a background noise frequency domain waveform under narrowband spike interference, and c portion represents a background noise frequency domain waveform under sawtooth background noise interference.
In one possible implementation, the interference positioning device first obtains the longitude and latitude of a plurality of target cells, where the plurality of target cells include at least one coordinating positioning cell and a cell to be positioned, that is, the target cell is a cell near the cell to be positioned. Then, the interference positioning device constructs a three-dimensional space coordinate system, converts longitude and latitude of a plurality of target cells into three-dimensional coordinate data, and determines at least one cooperative positioning cell from the plurality of target cells according to the conditions described above. And finally, the interference positioning device determines the coordinate of the highest point of the background noise in at least one co-positioning cell as the initial coordinate of the interference source. It should be noted that, the specific process of determining the initial coordinates of the interference source by the interference positioning device according to the base station noise floor parameter of at least one co-located cell may be referred to in S501-S503 below, and will not be described herein.
S202, the interference positioning device calculates the RSSI error of the received signal strength indication according to the space propagation model and the antenna receiving gain of each cooperative positioning cell.
In one possible implementation manner, the interference positioning device firstly projects a base station corresponding to at least one cooperative positioning cell into a three-dimensional space coordinate system established in S201 to determine a positioning model; then, the interference positioning device determines an included angle value of an interference source relative to the normal line of the base station antenna corresponding to each cooperative positioning cell based on the positioning model; and finally, the interference positioning device determines the antenna receiving gain of each cooperative positioning cell according to the included angle value. It should be noted that, the process of determining the antenna receiving gain of each co-located cell by the interference locating device is shown in S601-S603, which is not repeated here.
Alternatively, the spatial propagation model employs an eagli propagation model that satisfies the following equation 5:
L ＝88 +40lg d+20lg f-20lg h t h r -K equation 5
Wherein d represents a propagation distance in kilometers; f frequency in megahertz; h is a t Representing the height of a transmitting antenna in meters; h is a r Representing the height of the receiving antenna in meters, in this embodiment the base station antenna; k represents a terrain correction factor.
Optionally, under the condition that the interference sources are the repeater and 3 co-location cells are selected, setting the transmitting power of the repeater as P and the unit as dBm, and then the path loss of the co-location cells is respectively as follows:
wherein, the numbers of the co-location cells are respectively 0, 1 and 2, L represents the path loss, P represents the transmitting power of the repeater, G represents the antenna receiving gain of the co-location cell, and RSSI represents the average base noise value of the base station corresponding to the cell.
Alternatively, taking the path loss difference between two cells in the co-located cell, substituting the path loss difference into the propagation model, the accurate coordinates of the interference source should theoretically satisfy the following formula:
RSSI 1 - RSSI 0 ＝ 40lg d 0 /d 1 +20lg h r1 /h r0 + G 1 - G 0 equation 7
RSSI 2 - RSSI 0 ＝ 40lg d 0 /d 2 +20lgh r2 /h r0 +G 2 - G 0 Equation 8
Further, the calculation of the RSSI error satisfies the following formula:
△1＝ RSSI 1 - RSSI 0 - 40lg d 0 /d 1 -20lg h r1 /h r0 - G 1 + G 0 equation 9
△2＝RSSI 2 -RSSI 0 -40lg d 0 /d 2 -20lgh r2 /h r0 -G 2 +G 0 Equation 10
Where Δ1 and Δ2 represent RSSI errors.
S203, the interference positioning device determines the final coordinates of the interference source according to the initial coordinates and the RSSI errors.
Optionally, the interference positioning device starts from the initial coordinates and updates the coordinates and the RSSI errors of the interference sources one by one according to a lattice traversal method.
In one possible implementation, the lattice traversal is performed within 500 meters around the initial anchor point, with 100 meters spacing of 0.001 degrees per longitude step or 0.001 degrees per latitude step. Illustratively, a lattice diagram of a lattice traversal is shown in fig. 4.
Optionally, after each step, the coordinates of the interferer are updated and the RSSI error (i.e., Δ1 and Δ2) is calculated.
Optionally, after updating the preset times, the interference positioning device determines the coordinate corresponding to the minimum RSSI error as the final coordinate of the interference source.
It is understood that the final coordinates of the interference source may be three-dimensional coordinates or longitude and latitude coordinates. And under the condition that the final coordinate is required to be a longitude and latitude coordinate, the interference positioning device also needs to convert the coordinate corresponding to the time when the RSSI error is minimum into the longitude and latitude coordinate.
Based on the technical scheme, the embodiment of the application calculates the interference signal intensity difference between the co-located cells by selecting the co-located cells of the cells where the interference sources are located and acquiring the working parameters of the co-located cells, and then positions the interference sources by combining a positioning model, a spatial propagation model and a lattice traversal method. Because the difference of the antenna gains in different directions of the cells is considered when the interference signal intensity difference between different cells is calculated, the interference positioning method provided by the application can give consideration to the difference of the actual receiving gains of the receiving antennas of different cells when the repeater causing interference is positioned, and improves the positioning precision and efficiency.
As shown in fig. 5 in conjunction with fig. 2, fig. 5 is a schematic flow chart of another interference positioning method provided by the present application, which includes the following steps:
s501, the interference positioning device acquires longitude and latitude of a plurality of target cells.
Wherein the plurality of target cells includes at least one co-located cell and a cell to be located. The target cell is a cell near the cell to be located.
S502, the interference positioning device establishes a three-dimensional space coordinate system, and converts longitude and latitude of a plurality of target cells into three-dimensional coordinate data.
Alternatively, in the case where the number of co-located cells is 3, the longitude and latitude of the co-located cells are respectively expressed as: small sizeZone 0 (p) 0 ,q 0 ) Cell 1 (p 1 ,q 1 ) Cell 2 (p 2 ,q 2 )。
Further, after establishing a three-dimensional space coordinate system, converting longitude and latitude into three-dimensional coordinates to obtain a cell 0 position (x) 0 ,y 0 ,z 0 ) Cell 1 position is (x 1 ,y 1 ,z 1 ) Cell 2 position is (x 2 ,y 2 ,z 2 ). The latitude and longitude are converted into three-dimensional coordinates specifically referring to the following formula 11:
where p represents longitude, q represents latitude, and R represents earth radius.
S503, the interference positioning device determines at least one cooperative positioning cell from a plurality of target cells according to the interfered type information.
Optionally, the distance between the co-located cell and the cell to be located is smaller than a preset distance threshold. For example, the preset distance threshold may be set to 1000 meters. And the interference types of the co-located cell and the cell to be located are the same.
S504, the interference positioning device determines the coordinates of the highest point of the background noise in at least one co-located cell as the initial coordinates of the interference source.
Optionally, the interference positioning device first determines longitude and latitude coordinates of a highest point of background noise in at least one co-located cell, and marks the longitude and latitude coordinates as (p, q). Furthermore, the interference positioning device converts longitude and latitude coordinates (p, q) into three-dimensional coordinates (x, y, z) so as to facilitate the proceeding of the subsequent steps.
Based on the technical scheme, the embodiment of the application can acquire the base station base noise parameters of the cells nearby the cell to be positioned, determine at least one cooperative positioning cell from the nearby cells according to the base station base noise parameters, and determine the initial coordinates of the interference source by combining the base station base noise parameters.
As shown in fig. 6 with reference to fig. 5, fig. 6 is a schematic flow chart of another interference positioning method provided by the present application, which includes the following steps:
s601, the interference positioning device projects a base station corresponding to at least one cooperative positioning cell into a three-dimensional space coordinate system to determine a positioning model.
Optionally, the interference positioning device only considers the coordinates of the base station in the horizontal direction in order to give consideration to the directivity of the antenna gain. Thus, the interference locating device projects the base station into the ZOX plane of the three-dimensional space coordinate system. Fig. 7 is a schematic modeling diagram of a positioning model after the interference positioning device projects a base station corresponding to at least one co-located cell on a plane ZOX of a three-dimensional space coordinate system. In fig. 7, the positive direction of the X-axis indicates the east direction, and the positive direction of the Z-axis indicates the north direction.
S602, the interference positioning device determines an included angle value of an interference source relative to a normal line of a base station antenna corresponding to each cooperative positioning cell based on a positioning model.
Optionally, the interference positioning device determines an angle value of an interference source relative to a normal of a base station antenna corresponding to each co-located cell, and satisfies the following formula 12:
wherein θ 0 、θ 1 、θ 2 The values of the included angles between the interference sources and the antenna normals of the co-located cells 0-2 are respectively shown, and epsilon is the direction angle of the cell antenna.
S603, the interference positioning device determines the antenna receiving gain of each co-located cell according to the included angle value of the interference source relative to the normal of the base station antenna corresponding to each co-located cell.
Alternatively, in fig. 7, θ is the angle between the normals of the interference source cell antennas, and ε is the direction angle of the cell antennas. The antenna horizontal gain satisfies the following equation 13:
wherein A is m The maximum gain of the antenna can be obtained from a base station engineering reference table, theta 3dB And the included angle theta is the included angle between the interference source and the normal direction of the co-located cell antenna, and is 3dB of the antenna.
It will be appreciated that θ will be calculated according to equation 12 0 、θ 1 、θ 2 Substituting formula 13, the antenna receiving gain of each co-located cell in the horizontal direction can be obtained.
Based on the above technical scheme, the embodiment of the application determines the positioning model by projecting the base station corresponding to the co-located cell into the ZOX plane of the three-dimensional space coordinate system, so that the antenna receiving gain of each co-located cell can be determined by combining the positioning model, and the subsequent steps can be smoothly performed.
As shown in fig. 8 in conjunction with fig. 6, fig. 8 is a flow chart of another interference positioning method provided by the present application, which includes the following steps:
s801, the interference positioning device determines a first relation to be satisfied between theoretical coordinates of the interference source and RSSI of each co-located cell according to average base noise of a base station of each co-located cell, the spatial propagation model and antenna receiving gain of each co-located cell.
It can be understood that the first relationship that should be satisfied between the theoretical coordinates of the interference source and the RSSI between each co-located cell is equation 7 and equation 8 in the foregoing S02.
S802, the interference positioning device determines the RSSI error according to the actually measured RSSI of each cooperative positioning cell and the first relation.
Optionally, the interference positioning device determines that the RSSI error satisfies the formula 9 and the formula 10 in the foregoing S202 according to the actually measured RSSI of each co-located cell and the first relationship.
Based on the technical scheme, the embodiment of the application can calculate the RSSI error according to the space propagation model and the antenna receiving gain of each cooperative positioning cell so as to facilitate the smooth proceeding of the subsequent steps.
The embodiment of the application can divide the functional modules or functional units of the interference positioning device according to the method example, for example, each functional module or functional unit can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware, or in software functional modules or functional units. The division of the modules or units in the embodiment of the present application is schematic, which is merely a logic function division, and other division manners may be implemented in practice.
Illustratively, as shown in fig. 9, a schematic diagram of a possible structure of an interference positioning device according to an embodiment of the present application is shown. The interference location device 900 includes: a processing unit 901 and an acquisition unit 902.
The processing unit 901 is configured to determine an initial coordinate of an interference source according to a base station noise floor parameter of at least one co-located cell; the method comprises the steps that an interference source is located in a cell to be located, the distance between each co-located cell in at least one co-located cell and the cell to be located is smaller than a preset distance threshold, and the interference type of each co-located cell and the cell to be located is the same;
The processing unit 901 is further configured to calculate a received signal strength indicator RSSI error according to the spatial propagation model and an antenna receiving gain of each co-located cell;
the processing unit 901 is further configured to determine a final coordinate of the interference source according to the initial coordinate and the RSSI error.
Optionally, an acquiring unit 902 is configured to acquire a base station noise floor parameter; the base station base noise parameters are used for representing interference conditions received by the base stations corresponding to the co-located cells.
Optionally, an acquiring unit 902 is configured to acquire latitude and longitude of a plurality of target cells; wherein the plurality of target cells comprise at least one cooperative positioning cell and a cell to be positioned;
optionally, the processing unit 901 is further configured to establish a three-dimensional space coordinate system, and convert longitude and latitude of the plurality of target cells into three-dimensional coordinate data;
optionally, the processing unit 901 is further configured to determine at least one co-located cell from the plurality of target cells according to the interfered type information;
optionally, the processing unit 901 is further configured to determine, as the initial coordinate of the interference source, the coordinate of the highest point of the background noise in at least one co-located cell.
Optionally, the processing unit 901 is further configured to project a base station corresponding to at least one co-located cell in a three-dimensional space coordinate system, and determine a location model;
Optionally, the processing unit 901 is further configured to determine an angle value of the interference source relative to a normal line of the base station antenna corresponding to each co-located cell based on the positioning model;
optionally, the processing unit 901 is further configured to determine an antenna receiving gain of each co-located cell according to an angle value of the interference source relative to a normal of a base station antenna corresponding to each co-located cell.
Optionally, the processing unit 901 is further configured to determine, according to the average base noise of the base station of each co-located cell, the spatial propagation model, and the antenna receiving gain of each co-located cell, a first relationship to be satisfied between the theoretical coordinate of the interference source and the RSSI between each co-located cell;
optionally, the processing unit 901 is further configured to determine an RSSI error according to the actually measured RSSI of each co-located cell and the first relationship.
Optionally, the interference positioning device 900 may further include a storage unit (shown in a dashed box in fig. 9), where a program or an instruction is stored, which when executed by the processing unit 901 and the acquiring unit 902, enables the interference positioning device to perform the interference positioning method described in the above method embodiments.
In addition, the technical effects of the interference positioning device described in fig. 9 may refer to the technical effects of the interference positioning method described in the foregoing embodiments, and will not be described herein.
Fig. 10 is a schematic illustration of another possible structure of the interference locating device according to the above embodiment. As shown in fig. 10, the interference positioning device 1000 includes: a processor 1002.
The processor 1002 is configured to control and manage actions of the interference positioning device, for example, perform steps performed by the processing unit 901 and the obtaining unit 902, and/or perform other processes of the technical solutions described herein.
The processor 1002 may be implemented or realized with the various illustrative logical blocks, modules, and circuits described in connection with the present disclosure. The processor may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, etc.
Optionally, the interference locating device 1000 may further comprise a communication interface 1003, a memory 1001 and a bus 1004. Wherein the communication interface 1003 is used to support communication of the interference locator device 1000 with other network entities. The memory 1001 is used for storing program codes and data of the interference locating device.
Wherein the memory 1001 may be a memory in an interference location device, which may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk or solid state disk; the memory may also comprise a combination of the above types of memories.
Bus 1004 may be an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus or the like. The bus 1004 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 10, but not only one bus or one type of bus.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above. The specific working processes of the above-described systems, devices and modules may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.
An embodiment of the present application provides a computer program product containing instructions, which when run on an electronic device according to the present application, cause the computer to perform the interference localization method according to the above-mentioned method embodiment.
The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores instructions, and when the computer executes the instructions, the electronic equipment executes each step of the method flow shown in the embodiment of the method, which is executed by the interference positioning device.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: electrical connections having one or more wires, portable computer diskette, hard disk. Random access Memory (Random Access Memory, RAM), read-Only Memory (ROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), registers, hard disk, optical fiber, portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium suitable for use by a person or persons of skill in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In embodiments of the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (14)
1. A method of interference location, the method comprising:
determining initial coordinates of an interference source according to base station base noise parameters of at least one co-located cell; the interference source is located in a cell to be located, the distance between each co-located cell in the at least one co-located cell and the cell to be located is smaller than a preset distance threshold, and the interference type of each co-located cell and the cell to be located is the same;
calculating a Received Signal Strength Indication (RSSI) error according to the spatial propagation model and the antenna receiving gain of each cooperative positioning cell;
and determining final coordinates of the interference source according to the initial coordinates and the RSSI errors.
2. The method according to claim 1, wherein the method further comprises:
acquiring the base station noise floor parameters; the base station noise floor parameter is used for representing interference conditions received by the base station corresponding to the co-location cell.
3. The method according to claim 2, wherein the base station noise floor parameters include base station average noise floor and interfered type information, and the determining the initial coordinates of the interference source according to the base station noise floor parameters of the at least one co-located cell specifically includes:
acquiring longitude and latitude of the target cells; wherein the plurality of target cells includes the at least one co-located cell and the cell to be located;
establishing a three-dimensional space coordinate system, and converting the longitude and latitude of the plurality of target cells into three-dimensional coordinate data;
determining the at least one co-located cell from the plurality of target cells according to the interfered type information;
and determining the coordinates of the highest point of the background noise in the at least one co-located cell as the initial coordinates of the interference source.
4. A method according to claim 3, wherein prior to said calculating RSSI errors based on the spatial propagation model and the antenna reception gains of each co-located cell, the method further comprises:
projecting the base station corresponding to the at least one cooperative positioning cell into the three-dimensional space coordinate system to determine a positioning model;
Determining an included angle value of the interference source relative to the normal of the base station antenna corresponding to each cooperative positioning cell based on the positioning model;
and determining the antenna receiving gain of each cooperative positioning cell according to the included angle value of the interference source relative to the normal of the base station antenna corresponding to each cooperative positioning cell.
5. The method of claim 4, wherein calculating the RSSI error based on the spatial propagation model and the antenna reception gain of each co-located cell, comprises:
determining a first relation to be satisfied between theoretical coordinates of the interference source and RSSI (received signal strength indicator) of each co-located cell according to average base noise of a base station of each co-located cell, the spatial propagation model and antenna receiving gain of each co-located cell;
and determining the RSSI error according to the actually measured RSSI of each co-located cell and the first relation.
6. The method according to claim 5, wherein said determining the final coordinates of the interferer based on the initial coordinates and the RSSI error comprises:
starting from the initial coordinates, updating the coordinates of the interference source and the RSSI error one by one according to a lattice traversal method;
And after updating for preset times, determining the coordinate corresponding to the minimum RSSI error as the final coordinate of the interference source.
7. An interference locating device, characterized in that it comprises: a processing unit;
the processing unit is used for determining the initial coordinates of the interference source according to the base station noise floor parameters of at least one cooperative positioning cell; the interference source is located in a cell to be located, the distance between each co-located cell in the at least one co-located cell and the cell to be located is smaller than a preset distance threshold, and the interference type of each co-located cell and the cell to be located is the same;
the processing unit is further configured to calculate a received signal strength indicator RSSI error according to the spatial propagation model and an antenna receiving gain of each co-located cell;
the processing unit is further configured to determine a final coordinate of the interference source according to the initial coordinate and the RSSI error.
8. The interference locating device of claim 7, further comprising: an acquisition unit;
the acquisition unit is used for acquiring the base station noise floor parameters; the base station noise floor parameter is used for representing interference conditions received by the base station corresponding to the co-location cell.
9. The interference positioning device of claim 8, wherein,
the acquisition unit is further used for acquiring longitude and latitude of the plurality of target cells; wherein the plurality of target cells includes the at least one co-located cell and the cell to be located;
the processing unit is further used for establishing a three-dimensional space coordinate system and converting longitude and latitude of the plurality of target cells into three-dimensional coordinate data;
the processing unit is further configured to determine the at least one co-located cell from the plurality of target cells according to the interfered type information;
the processing unit is further configured to determine, as an initial coordinate of the interference source, a coordinate of a highest point of background noise in the at least one co-located cell.
10. The interference positioning device of claim 9, wherein,
the processing unit is further configured to project a base station corresponding to the at least one co-located cell into the three-dimensional space coordinate system, and determine a location model;
the processing unit is further configured to determine an angle value of the interference source relative to a normal of the base station antenna corresponding to each co-located cell based on the positioning model;
The processing unit is further configured to determine an antenna receiving gain of each co-located cell according to an angle value of the interference source relative to a normal of a base station antenna corresponding to each co-located cell.
11. The interference location device of claim 10, wherein the interference location device comprises a plurality of sensors,
the processing unit is further configured to determine a first relationship to be satisfied between a theoretical coordinate of the interference source and an RSSI between each co-located cell according to the average base noise of the base station of each co-located cell, the spatial propagation model, and an antenna receiving gain of each co-located cell;
the processing unit is further configured to determine the RSSI error according to the actually measured RSSI of each co-located cell and the first relationship.
12. The interference location device of claim 11, wherein the interference location device comprises a plurality of sensors,
the processing unit is further used for starting from the initial coordinates, and updating the coordinates of the interference source and the RSSI errors one by one according to a lattice traversal method;
and the processing unit is further used for determining the coordinate corresponding to the minimum RSSI error as the final coordinate of the interference source after the updating of the preset times is carried out.
13. An electronic device, comprising: a processor and a memory; wherein the memory is configured to store computer-executable instructions that, when executed by the electronic device, cause the electronic device to perform the interference location method of any of claims 1-6.
14. A computer readable storage medium comprising instructions that, when executed by an electronic device, enable the electronic device to perform the interference localization method of any one of claims 1-6.
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| CN117368842A (en) * | 2023-12-07 | 2024-01-09 | 广东云下汇金科技有限公司 | Personnel intelligent positioning system based on data center and control method thereof |
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| CN117368842A (en) * | 2023-12-07 | 2024-01-09 | 广东云下汇金科技有限公司 | Personnel intelligent positioning system based on data center and control method thereof |
| CN117368842B (en) * | 2023-12-07 | 2024-04-12 | 广东云下汇金科技有限公司 | Personnel intelligent positioning system based on data center and control method thereof |
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