CN113225677A - Method and device for positioning interference source of repeater - Google Patents

Method and device for positioning interference source of repeater Download PDF

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CN113225677A
CN113225677A CN202110627571.8A CN202110627571A CN113225677A CN 113225677 A CN113225677 A CN 113225677A CN 202110627571 A CN202110627571 A CN 202110627571A CN 113225677 A CN113225677 A CN 113225677A
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base station
station cell
target base
repeater
interference source
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CN113225677B (en
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柯小玲
彭发龙
冯健博
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The embodiment of the invention provides a method and a device for positioning a repeater interference source, wherein a base noise value is compared with a preset threshold value when a base station cell is busy, a target base station cell interfered by an interference source is selected from a plurality of base station cells in an area, and the spatial propagation loss between the repeater interference source and the target base station cell can be directly determined according to the noise power output value of a signal amplifier in the repeater interference source counted in basic engineering parameter data of the target base station cell and gateway external interference statistic data. The embodiment of the invention can automatically, quickly and accurately position the position of the interference source of the repeater according to the cell parameter information of the base station cell and the background noise value in the professional network management system.

Description

Method and device for positioning interference source of repeater
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for positioning an interference source of a repeater.
Background
In recent years, with the increasing scale of mobile communication networks, the network coverage and the effect are improved. However, a large number of network coverage holes still exist in the existing network, and in order to enhance the received signal strength, a repeater is usually used for amplifying the received signal for users in an area with weak signal coverage. The repeater improves the signal receiving strength of part of users, and causes the problems of increased call drop rate, reduced communication quality, reduced coverage area of a base station, network congestion and the like of other users accessing the cell. Therefore, it is necessary to find the locations of the repeaters and cancel the repeaters.
At present, the external interference source investigation work is mainly completed by adopting a field drive test frequency sweep method, namely, related personnel use a detection instrument to detect signals on each road, and the position of the interference source is determined according to a detection result.
However, the manual drive test method for checking the interference source is time-consuming and labor-consuming, has very low efficiency, and increases the difficulty in checking in a dense area exponentially. Moreover, the troubleshooting accuracy is related to the technical level of related personnel, and the inaccurate troubleshooting is easy to occur.
Disclosure of Invention
The embodiment of the invention provides a method and a device for positioning an interference source of a repeater, which aim to solve the problems that in the prior art, the manual drive test method for detecting the interference source is time-consuming and labor-consuming, the efficiency is very low, and the difficulty in detecting in a dense area is exponentially increased. Moreover, the troubleshooting accuracy is related to the technical level of related personnel, and the problem of inaccurate troubleshooting is easy to occur.
The first aspect of the embodiments of the present invention provides a method for positioning an interference source of a repeater, including:
determining a target base station cell in a plurality of base station cells in a preset area, wherein the target base station cell is a cell with a self busy hour bottom noise value larger than a preset threshold value in the plurality of base station cells;
acquiring the working parameter data of the target base station cell;
determining the space propagation loss of a signal from a repeater interference source to the target base station cell according to the working parameter data of the target base station cell and the predetermined noise power output value of a signal amplifier in the repeater interference source;
and determining the position information of the repeater interference source according to the space propagation loss.
Optionally, the determining, according to the working parameter data of the target base station cell and a predetermined noise power output value of a signal amplifier in a repeater interference source, a spatial propagation loss of a signal from the repeater interference source to the target base station cell includes:
determining the antenna receiving gain of the target base station cell according to the working parameter data of the target base station cell;
and determining the space propagation loss according to the noise power output value, the bottom noise of the target base station cell, the antenna receiving gain of the target base station cell and a first formula.
Optionally, the first formula is:
Li＝P0-RSSI+Gi；
wherein L isiRepresents the spatial propagation loss, P, of a signal from the repeater interferer to the target base station cell0Representing the noise power output value, RSSI representing the background noise of the target base station cell, GiRepresenting the antenna reception gain of the target base station cell.
Optionally, the determining, according to the operational parameter data of the target base station cell, the antenna reception gain of the target base station cell includes:
establishing a coordinate system by taking the position corresponding to the latitude and longitude information of the target base station cell as an origin and taking the direction indicated by the azimuth information as a transverse axis positive direction;
taking the origin as a starting point, and taking the antenna receiving gain in a signal radiation range with the transverse axis as a central axis as a maximum value, wherein the signal radiation range is a radiation range with the origin as the starting point and a first included angle with the central axis;
and taking the original point as a starting point, and when the included angle between the signal radiation direction and the central axis is increased by a first included angle, the antenna receiving gain in the radiation range is decreased by a preset value.
Optionally, the position of the repeater interference source is determined by the spatial propagation loss and the antenna receiving gain of the target base station cell, and there is a corresponding relationship between the antenna receiving gain of the target base station cell and an included angle between the repeater interference source and the target base station cell, the method further includes:
and determining the position information of the interference source of the repeater according to the space propagation loss and the included angle between the interference source of the repeater and the target base station cell.
Optionally, the determining the position information of the repeater interference source according to the spatial propagation loss and the included angle between the repeater interference source and the target base station cell includes:
determining the value of the antenna receiving gain of the target base station cell according to the included angle between the repeater interference source and the target base station cell and a second formula;
substituting the antenna receiving gain values of the target base station cell into the first formula respectively to obtain the space propagation loss corresponding to the included angle of the position of the repeater interference source relative to the target base station cell;
determining a distance value between a first number of repeater interference sources and the target base station cell according to the space propagation loss and space path propagation loss formula;
determining longitude and latitude information of target points in a target number corresponding to each target base station cell according to an included angle between the repeater interference source and the target base station cell and a distance between the repeater interference source and the target base station cell, wherein the target number is a product of the first number and a second number, and the second number is a number of included angle values between the repeater interference source and the target base station cell;
and determining the position information of the repeater interference source according to the longitude and latitude information of the target number of target points corresponding to each target base station cell.
Optionally, the second formula is:
Figure BDA0003102224190000031
k represents an included angle of the position of the repeater interference source relative to the target base station cell, alpha represents a first included angle formed by the origin point serving as a starting point and the signal radiation direction and the central axis, and P represents a distance between the repeater interference source and the central axishRepresents the maximum value of the antenna reception gain, and m represents the preset value.
Optionally, the determining the location information of the repeater interference source according to the longitude and latitude information of the target number of target points corresponding to each target base station cell includes:
determining effective base station cells, wherein the effective base station cells are preset number of cells with the largest noise value in all target base station cells;
respectively and randomly selecting a target point from the target number of target points corresponding to each effective base station cell to obtain a preset number of target points;
determining the area of a polygon enclosed by a preset number of target points according to the longitude and latitude information of each target point in the preset number of target points;
and determining an area surrounded by a preset number of target points corresponding to the minimum area of the polygon as an area where the repeater interference source is located.
A second aspect of the embodiments of the present invention provides a positioning apparatus for a repeater interference source, including:
the processing module is used for determining a target base station cell in a plurality of base station cells in a preset area, wherein the target base station cell is a cell with a self busy hour base noise value larger than a preset threshold value in the plurality of base station cells;
an obtaining module, configured to obtain the operating parameter data of the target base station cell;
the processing module is further used for determining the spatial propagation loss of a signal from the repeater interference source to the target base station cell according to the working parameter data of the target base station cell and the predetermined noise power output value of a signal amplifier in the repeater interference source;
and the positioning module is used for determining the position information of the repeater interference source according to the space propagation loss.
A third aspect of an embodiment of the present invention provides a computer apparatus, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes the computer-executable instructions stored in the memory, so that the at least one processor executes the method for positioning the repeater interference source according to the first aspect of the embodiment of the present invention.
A fourth aspect of the present invention provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the method for positioning an interference source of a repeater according to the first aspect of the present invention is implemented.
A fifth aspect of the embodiments of the present invention provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the method for positioning an interference source of a repeater according to the first aspect of the embodiments of the present invention is implemented.
The embodiment of the invention provides a method and a device for positioning a repeater interference source, wherein the method comprises the steps of comparing a base noise value when a base station cell is busy with a preset threshold value, selecting a target base station cell interfered by the interference source from a plurality of base station cells in an area, and directly determining the space propagation loss between the repeater interference source and the target base station cell according to the noise power output value of a signal amplifier in the repeater interference source counted in basic engineering parameter data of the target base station cell and gateway external interference statistical data.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a diagram illustrating an application scenario of a method for locating an interference source of a repeater according to an exemplary embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for locating a repeater interference source according to an exemplary embodiment of the present invention;
FIG. 3 is a diagram illustrating an application scenario of a method for locating an interference source of a repeater according to another exemplary embodiment of the present invention;
fig. 4 is a diagram illustrating antenna reception gain and signal radiation angle of a target base station cell according to an exemplary embodiment of the present invention;
FIG. 5 is a diagram illustrating an application scenario of a method for locating an interference source of a repeater according to another exemplary embodiment of the present invention;
FIG. 6 is a schematic diagram of a positioning apparatus for a repeater interference source according to an exemplary embodiment of the present invention;
fig. 7 is a schematic structural diagram of a computer device according to an exemplary embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In recent years, with the increasing scale of mobile communication networks, the network coverage and the effect are improved. However, a large number of network coverage holes still exist in the existing network, and in order to enhance the received signal strength, a repeater is usually used for amplifying the received signal for users in an area with weak signal coverage. The repeater improves the signal receiving strength of part of users, and causes the problems of increased call drop rate, reduced communication quality, reduced coverage area of a base station, network congestion and the like of other users accessing the cell. Therefore, it is necessary to find the locations of the repeaters and cancel the repeaters.
At present, the external interference source investigation work is mainly completed by adopting a field drive test frequency sweep method, namely, related personnel use a detection instrument to detect signals on each road, and the position of the interference source is determined according to a detection result. However, the manual drive test method for checking the interference source is time-consuming and labor-consuming, has very low efficiency, and increases the difficulty in checking in a dense area exponentially. Moreover, the troubleshooting accuracy is related to the technical level of related personnel, and the inaccurate troubleshooting is easy to occur.
Aiming at the defect, the main technical concept of the technical scheme of the invention is as follows: the method is characterized in that most uplink interference in the mobile network is from a repeater installed by a user, the repeater amplifies uplink signals of the user within the coverage range of the repeater, and the amplified uplink signals still keep high signal strength when reaching a base station after space propagation loss, so that the background noise value of the base station is improved, the background noise value of the base station is increased under the influence of the repeater, the balance of the whole communication system is damaged, the uplink signals of other users which are not amplified are submerged in interference noise, and the signal quality of other users is influenced. Therefore, the applicant thinks that a target base station cell affected by a repeater interference source is determined by comparing a base station background noise value with a preset threshold value. Then through a first formula Li＝P0-RSSI+GiThe relationship between the base noise of the base station cell, the noise power output value of the interference source of the repeater and the space propagation loss can be obtained, wherein LiRepresents the spatial propagation loss, P, of a signal from the repeater interferer to the target base station cell0Representing the noise power output value, RSSI representing the background noise of the target base station cell, GiRepresenting the antenna reception gain of the target base station cell. Because the space propagation loss and the distance between the repeater interference source and the target base station cell have a relation, the position of the repeater interference source can be quickly and accurately positioned according to the space propagation loss.
FIG. 1 is a diagram of an application scenario of a method for positioning an interference source of a repeater according to an exemplary embodiment of the present invention.
As shown in fig. 1, in the application scenario provided in this embodiment, in the entire coverage areas of the first base station and the second base station, three users use terminal devices for communication, where a terminal device a of the first user is in the coverage area of the first base station, a terminal device B of the second user is in the coverage area of the second base station, and a terminal device C of the third user is in the overlapping coverage area of the first base station and the second base station. In addition, the third user uses the repeater D to improve the received signal quality of the terminal device C in order to improve the signal quality, but the use of the repeater D increases the bottom noise of the first base station and the second base station, so that the terminal device a of the first user and the terminal device B of the second user are affected by noise to reduce the network quality, and therefore, the position of the repeater needs to be found out quickly and accurately to solve the interference problem quickly.
Fig. 2 is a flowchart illustrating a method for locating a repeater interference source according to an exemplary embodiment of the present invention, where an execution subject of the method provided in this embodiment may be, but is not limited to, a server.
As shown in fig. 2, the method provided by the present embodiment may include the following steps.
S201, determining a target base station cell in a plurality of base station cells in a preset area, wherein the target base station cell is a cell with a self-busy hour base noise value larger than a preset threshold value in the plurality of base station cells.
It should be noted that most uplink interference in the network originates from the repeater installed by the user, and the influence of the repeater on the uplink signal interference of the base station cell is due to: the repeater amplifies the uplink signal of a user in the coverage area, and the amplified uplink signal still keeps higher signal strength when reaching the receiving end of the base station after space propagation loss, so that the background noise value of the base station is improved. The uplink power control of the Long Term Evolution (LTE) system enables the power spectral densities of uplink signals of users using the same Modulation and Coding Scheme (MCS) to reach the base station to be approximately equal in different positions and wireless environments, and the maximum transmission power of the terminal is specified to be 23dBm by a protocol, so that the chassis noise of the whole LTE system can maintain a balanced and stable state on the premise of non-heavy loading. If the repeater station signal amplifier exists, the user signal can obtain power gain of several times or even tens of times after being amplified by the repeater station, so that the signal strength of a user terminal reaching a base station can be increased by several times to tens of times, the background noise value of a base station cell is greatly raised, the balance of the whole system is damaged, and the uplink signals of other users which are not amplified by the signal can be submerged in interference noise.
Under normal conditions, the repeater affects base station cells within a certain range around the repeater, so that whether each base station cell receives the influence of the repeater interference source can be judged by acquiring the background noise value of each base station in the area and comparing the background noise value of each base station cell with a preset threshold value.
Specifically, the preset threshold may be a base noise value under the condition that the base station cell is not normally interfered, for example, -95dBm, the base noise value when all base station cells within the preset area range are in a 15-minute granularity self-busy state can be extracted from the professional network management system, if the base noise value is greater than-95 dBm, it indicates that the base station cell is affected by the repeater interference source, and the base station cell is determined as the target base station cell.
In the present embodiment, the base noise value of the base station cell is a Received Signal Strength Indication (RSSI) value.
S202, acquiring the work parameter data of the target base station cell.
Specifically, after all target base station cells interfered by the repeater are selected, basic parameter data of the target base station cells are obtained in the base station server, wherein the basic parameter data comprise information such as azimuth angles, longitudes and latitudes of each target base station cell.
S203, according to the working parameter data of the target base station cell and the predetermined noise power output value of the signal amplifier in the repeater interference source, determining the space propagation loss of the signal from the repeater interference source to the target base station cell.
In this step, the noise power output value of the signal amplifier in the interference source of the repeater is composed of four parts, including the white noise (N is used) of the repeater0Representation), noise figure of repeater (in N)noiseShown), gain of repeater (by G)antDenoted) and the initial value of the uplink power of the amplified ue (denoted P)uDenoted by P), the noise power output of the repeater interferer (in P)0Expressed) as: p0＝N0+Nnoise+Gant+PuWherein, the white noise calculation formula of the repeater is N010log (KTB), itWherein K is Boltzmann constant, T is the temperature in Kelvin, and B is the signal bandwidth; n is a radical ofnoiseThe value is generally 5dB according to the current network experience value; gantThe nominal power gain of the current mainstream repeater is generally between 10dB and 20 dB; puGenerally taking a value of 15dBm for power output of the user terminal UE in a normal service state according to an existing network experience value; substituting the values of the four parts into a noise power output formula to obtain P0Is in the range of [30dBm, 40dBm]。
Further, after the noise power output value of the signal amplifier in the repeater interference source is obtained, the spatial propagation loss of the signal from the repeater interference source to the target base station cell can be determined according to the working parameter data of the target base station cell and the noise power output value of the signal amplifier in the repeater interference source.
S204, determining the position information of the interference source of the repeater according to the space propagation loss.
Specifically, the spatial path propagation loss formula is L ═ 32.45+20lgF +20lgD, where L denotes spatial propagation loss, F denotes signal transmission frequency (in MHz), and D denotes the distance between the repeater interference source and the target base station cell. Since F can be measured, after the space propagation loss between the repeater interference source and the target base station cell is determined, the distance between the repeater interference source and the target base station cell can be obtained through the formula, and therefore the position location of the repeater interference source is achieved.
In the embodiment, the base noise value is compared with the preset threshold value when the base station cell is busy, a target base station cell interfered by an interference source is selected from a plurality of base station cells in the area, the spatial propagation loss between the repeater interference source and the target base station cell can be directly determined according to the noise power output value of the signal amplifier in the repeater interference source counted in the basic work parameter data and the gateway external interference statistical data of the target base station cell, and the position of the repeater interference source can be quickly and accurately positioned due to the fact that the spatial propagation loss is in relation with the distance and the included angle between the repeater interference source and the target base station cell.
For better understanding of the present application, a detailed implementation method of the present application will be described below with reference to an application scenario shown in fig. 3 on the basis of the embodiment shown in fig. 2, and an execution subject of the method provided in the present embodiment may be the server 301 in the embodiment shown in fig. 3.
In one or more possible cases of this embodiment, the spatial propagation loss is determined according to the noise power output value, the base noise of the target base station cell, the antenna reception gain of the target base station cell, and a first formula, where the first formula is:
Li＝P0-RSSI+Gi；
wherein L isiRepresents the spatial propagation loss, P, of a signal from the repeater interferer to the target base station cell0Representing the noise power output value, RSSI representing the background noise of the target base station cell, GiRepresenting the antenna reception gain of the target base station cell.
Further, respectively determining noise power output values P of interference sources of the repeater in a first formula0Base noise RSSI of target base station cell and antenna receiving gain G of target base station celliThe spatial propagation loss can be obtained by the first formula, and the determination processes of these three parameters will be described separately below.
Noise power output value P for signal amplifier in interference source of repeater0Composed of four parts including white noise of repeater station (using N)0Representation), noise figure of repeater (in N)noiseShown), gain of repeater (by G)antDenoted) and the initial value of the uplink power of the amplified ue (denoted P)uDenoted by P), the noise power output of the repeater interferer (in P)0Expressed) as: p0＝N0+Nnoise+Gant+PuWherein, the white noise calculation formula of the repeater is N010log (ktb), where K is boltzmann's constant, T is kelvin temperature, and B is signal bandwidth; n is a radical ofnoiseThe value is generally 5dB according to the current network experience value; gantAt present, the mainThe nominal power gain of the stream repeater is generally between 10dB and 20 dB; puGenerally taking a value of 15dBm for power output of the user terminal UE in a normal service state according to an existing network experience value; substituting the values of the four parts into a noise power output formula to obtain P0Is in the range of [30dBm, 40dBm]。
Specifically, as shown in FIG. 3, the noise figure (using N) of the repeaternoiseDenoted) and repeater gain (in G)antRepresentation), etc. are stored in the database 302, the server 301 extracts the data from the database 302 and directly calculates the noise power output P of the interference source of the repeater0。
The RSSI of the background noise value of the target base station cell is stored in the professional network management system 303, and the server 301 extracts the background noise value of each target base station cell in the network management system 303 according to the identifier of each target base station cell.
Antenna reception gain G for target base station celliAnd then determined by the parameter data of the target base station cell.
In some embodiments, the determining the antenna reception gain of the target base station cell according to the operational parameter data of the target base station cell includes: establishing a coordinate system by taking the position corresponding to the latitude and longitude information of the target base station cell as an origin and taking the direction indicated by the azimuth information as a transverse axis positive direction; taking the origin as a starting point, and taking the antenna receiving gain in a signal radiation range with the transverse axis as a central axis as a maximum value, wherein the signal radiation range is a radiation range with the origin as the starting point and a first included angle with the central axis; and taking the original point as a starting point, and when the included angle between the signal radiation direction and the central axis is increased by a first included angle, the antenna receiving gain in the radiation range is decreased by a preset value.
Specifically, as shown in fig. 3, the server 301 extracts a cell list of the target base station cell from the base station server 304 according to the identifier of each target base station cell, and further obtains the azimuth information and the latitude and longitude information of each target base station cell from the cell list. Then, the server 301 establishes a coordinate system with the position corresponding to the latitude and longitude of each target base station cell as the origin (as shown in fig. 4, the origin is denoted by O), and with the direction indicated by the azimuth information as the horizontal axis (as shown in fig. 4, the origin is denoted by X axis) in the forward direction.
Further, taking the X axis as a central axis, taking the origin O as a starting point, and taking a signal radiation range forming a first included angle with the central axis as a maximum value (i.e. a peak value) of the antenna reception gain of the target base station cell, in this embodiment, as shown in fig. 4, the first included angle is 7.5 degrees, and then the peak value of the antenna reception gain is taken in a radiation range from-7.5 degrees below the central axis to 7.5 degrees above the central axis (the radiation angle is 15 degrees), in this embodiment, the maximum value of the antenna reception gain is 15dB, and above or below the central axis, taking the origin O as a starting point, the antenna reception gain in the radiation range decreases by 3dB every time the included angle between the signal radiation direction and the central axis increases by 7.5 degrees.
Thus, the antenna reception gain G of the target base station celliIs a variable that is related to the signal radiation angle. Furthermore, as can be seen from the first formula, for a target base station cell, after determining the output power and the noise floor of the interferer noise in the target base station cell, the spatial propagation loss is also a gain G along with the antenna receptioniIs changed and changed variables are changed. Therefore, the specific location of the repeater interference source is also a variable value determined by the spatial propagation loss and the antenna reception gain of the target base station cell, i.e. by binary parameters (L, G)i) And (6) determining. And receiving gain G by the antennaiIs determined by the process of determining the antenna reception gain GiActually, there is a corresponding relationship with the included angle between the repeater interference source and the target base station cell, for example, when the included angle between the repeater interference source and the target base station cell is 6 degrees, the antenna receiving gain corresponding to the position is 15 dB; when the included angle between the interference source of the repeater and the target base station cell is 12 degrees, the antenna receiving gain corresponding to the position is reduced by 3dB (12 dB). Therefore, the location information of the repeater interference source can be equivalently determined by binary parameters (L, K), wherein K represents the repeater interferenceAnd the included angle of the position of the source relative to the target base station cell.
Specifically, the value of the antenna reception gain of the target base station cell is determined according to a second formula, where the second formula is:
Figure BDA0003102224190000111
k represents an included angle of the position of the repeater interference source relative to the target base station cell, alpha represents a first included angle formed by the origin point serving as a starting point and the signal radiation direction and the central axis, and P represents a distance between the repeater interference source and the central axishRepresents the maximum value of the antenna reception gain, and m represents the preset value.
Illustratively, the first included angle is 7.5 degrees, starting at the origin, and is [ -7.5 ] from the central axis. 7.5]The antenna reception gain in the range is maximum 15, and therefore, G can be determinediThe values of (A) are respectively the following five values:
Figure BDA0003102224190000121
wherein, the values of i include 1, 2, 3, 4 and 5, and the values of the antenna receiving gain of the target base station cell (five different G's)iValues) are respectively substituted into the first formula to obtain five space propagation loss values Li(i∈[1，5]) And, each LiCorresponding relation exists between the interference source of the repeater and the included angle K between the target base station cells, and for each LiThe values, respectively, have 2K values corresponding to them. In this example, each LiTaking the median of two corresponding value ranges for 2K values corresponding to the value, for example, when G is used3When the first formula is substituted with 9, the calculated L3The two corresponding K values are respectively two corresponding value ranges ([ -22.5, -15)]And [15, 22.5 ]]) 18.75 and-18.75, as shown in fig. 5, L1The corresponding two K values are 3.75 and-3.75, respectively, L2The corresponding two K values are 11.25 and-11.25, L4The corresponding two K values are 26.25 and-26.25, L5The corresponding two values of K are 60 and-60, respectively.
Further, a spatial propagation loss L is obtainediThen, according to a space path propagation loss formula, determining a distance value between a first number of repeater interference sources and the target base station cell; wherein the first predetermined number is the antenna receiving gain GiThe number of values of (A) is 5G in the present embodimentiThen five L are correspondingly obtainediThe value, and then the space path propagation loss formula, can be calculated to obtain the distance value D between the 5 repeater interference sources and the target base station celli(i∈[1，5])。
Further, each L is determinediThe values respectively corresponding to a K value and a distance value DiThen, longitude and latitude information of a target number of target points corresponding to each target base station cell can be obtained, wherein the target number is the product of the first number and a second number, and the second number is the number of included angle values between the repeater interference sources and the target base station cells.
In the present embodiment, the first number is 5 and the second number is 2, i.e., each GiCorresponding to 2KiAnd a DiTherefore, 10 target points can be obtained, namely 10 target points are corresponding to the periphery of each target base station cell, and the longitude and latitude information of each target point can be obtained through calculation because the longitude and latitude information of each target base station cell and the included angle and the distance between each target point and the target base station cell are known. And finally, according to the longitude and latitude information of 10 target points corresponding to each target base station cell, the position information of the repeater interference source can be determined.
In a possible embodiment, determining the location information of the repeater interference source according to the longitude and latitude information of the target number of target points corresponding to each target base station cell includes: determining effective base station cells, wherein the effective base station cells are preset number of cells with the largest noise value in all target base station cells; respectively and randomly selecting a target point from the target number of target points corresponding to each effective base station cell to obtain a preset number of target points; determining the area of a polygon enclosed by a preset number of target points according to the longitude and latitude information of each target point in the preset number of target points; and determining an area surrounded by a preset number of target points corresponding to the minimum area of the polygon as an area where the repeater interference source is located.
Specifically, the repeater interference source will interfere with the surrounding base station cells, so that the longitude and latitude information of 10 target points corresponding to each target base station cell can be obtained by using the same method. And selecting the cells with the largest noise value in all the target base station cells as effective base station cells, namely selecting the cells with the strongest interference of the repeater stations as the effective base station cells.
The preset number can be 4, that is, 4 base station cells with the strongest interference are selected as effective base station cells, and the repeater interference source is likely to be in the coverage area of the 4 effective base station cells.
Further, one target point is arbitrarily selected from 10 target points corresponding to each effective base station cell to obtain 4 target points, and the area of a polygon enclosed by the 4 target points is calculated according to the longitude and latitude information of the 4 target points. And selecting any one target point from 10 target points corresponding to each effective base station cell, wherein 10000 possible combinations exist, and selecting 4 target points with the smallest area of the enclosed polygons from the polygonal areas corresponding to the 1000 possible combinations, so that the repeater interference source can be determined to be in the coverage range corresponding to the 4 target points with the smallest area of the enclosed polygons.
For example, as shown in fig. 5, assuming that a, b, c, and d are four effective base station cells with the largest background noise values of a plurality of target base station cells, the longitude and latitude (Xa) of 10 target points corresponding to the effective base station cell a is obtained by the above method1，Ya1)、(Xa2，Ya2)……(Xa10，Ya10) The longitude and latitude of 10 target points corresponding to the effective base station cell b are (Xb)1，Yb1)、(Xb2，Yb2)……(Xb10，Yb10) The longitude and latitude of 10 target points corresponding to the effective base station cell c are (Xc)1，Yc1)、(Xc2，Yc2)……(Xc10，Yc10) The longitude and latitude of 10 target points corresponding to the effective base station cell d are (Xd)1，Yd1)、(Xd2，Yd2)……(Xd10，Yd10). Respectively selecting one target point from 4 effective base station districts of a, b, c and d, calculating the area of the polygon enclosed under various combination conditions, and comparing to obtain the target point (Xa) in the effective base station district a5，Ya5) Target point (Xb) in active base station cell b1，Yb1) Target point (Xc) in active base station cell c10，Yc10) And (Xd) in the active base station cell d1，Yd1) And if the area of the enclosed polygon is the minimum, determining that the repeater interference source is in the area enclosed by the four points.
It should be noted that the information of the position relationship of the 4 effective base station cells and the positions of the 10 target points corresponding to each effective base station cell shown in fig. 5 is only illustrated as a possible example, in a specific scenario, the azimuth relationship of the 4 effective base station cells and the position information of the target point corresponding to each effective base station cell are thousands of cases, but the actual repeater interference source position determination manner is the same as the example given in fig. 5, and therefore, the present application is not described any more.
In the embodiment, the position of the interference source of the repeater can be automatically, quickly and accurately positioned by utilizing the cell parameter information of the base station cell and the background noise value in the professional network management system.
FIG. 6 is a schematic structural diagram of a repeater interference source positioning device according to an exemplary embodiment of the present invention.
As shown in fig. 6, the apparatus provided in this embodiment includes:
a processing module 601, configured to determine a target base station cell in multiple base station cells in a preset area, where the target base station cell is a cell with a self busy hour base noise value greater than a preset threshold value in the multiple base station cells;
an obtaining module 602, configured to obtain the operating parameter data of the target base station cell;
the processing module is further used for determining the spatial propagation loss of a signal from the repeater interference source to the target base station cell according to the working parameter data of the target base station cell and the predetermined noise power output value of a signal amplifier in the repeater interference source;
a positioning module 603, configured to determine location information of the repeater interference source according to the spatial propagation loss.
Further, the processing module is specifically configured to: determining the antenna receiving gain of the target base station cell according to the working parameter data of the target base station cell;
determining the spatial propagation loss according to the noise power output value, the bottom noise of the target base station cell, the antenna receiving gain of the target base station cell and a first formula, wherein the first formula is as follows:
Li＝P0-RSSI+Gi；
wherein L isiRepresents the spatial propagation loss, P, of a signal from the repeater interferer to the target base station cell0Representing the noise power output value, RSSI representing the background noise of the target base station cell, GiRepresenting the antenna reception gain of the target base station cell.
Further, the parameter data includes latitude and longitude information and azimuth information of the target base station cell, and the processing module is specifically configured to:
establishing a coordinate system by taking the position corresponding to the latitude and longitude information of the target base station cell as an origin and taking the direction indicated by the azimuth information as a transverse axis positive direction;
taking the origin as a starting point, and taking the antenna receiving gain in a signal radiation range with the transverse axis as a central axis as a maximum value, wherein the signal radiation range is a radiation range with the origin as the starting point and a first included angle with the central axis;
and taking the original point as a starting point, and when the included angle between the signal radiation direction and the central axis is increased by a first included angle, the antenna receiving gain in the radiation range is decreased by a preset value.
Further, the position of the repeater interference source is determined by the spatial propagation loss and the antenna receiving gain of the target base station cell, and there is a corresponding relationship between the antenna receiving gain of the target base station cell and an included angle between the repeater interference source and the target base station cell, and the positioning module is specifically configured to: and determining the position information of the interference source of the repeater according to the space propagation loss and the included angle between the interference source of the repeater and the target base station cell.
Further, the positioning module is specifically configured to:
according to the included angle between the repeater interference source and the target base station cell, determining the value of the antenna receiving gain of the target base station cell as follows:
Figure BDA0003102224190000151
k represents an included angle of the position of the repeater interference source relative to the target base station cell, alpha represents a first included angle formed by the origin point serving as a starting point and the signal radiation direction and the central axis, and P represents a distance between the repeater interference source and the central axishRepresents the maximum value of the antenna receiving gain, and m represents the preset value;
substituting the antenna receiving gain values of the target base station cell into the first formula respectively to obtain the space propagation loss corresponding to the included angle of the position of the repeater interference source relative to the target base station cell;
determining a distance value between a first number of repeater interference sources and the target base station cell according to the space propagation loss and space path propagation loss formula;
determining longitude and latitude information of target points in a target number corresponding to each target base station cell according to an included angle between the repeater interference source and the target base station cell and a distance between the repeater interference source and the target base station cell, wherein the target number is a product of the first number and a second number, and the second number is a number of included angle values between the repeater interference source and the target base station cell;
and determining the position information of the repeater interference source according to the longitude and latitude information of the target number of target points corresponding to each target base station cell.
Further, the positioning module is specifically configured to:
determining effective base station cells, wherein the effective base station cells are preset number of cells with the largest noise value in all target base station cells;
respectively and randomly selecting a target point from the target number of target points corresponding to each effective base station cell to obtain a preset number of target points;
determining the area of a polygon enclosed by a preset number of target points according to the longitude and latitude information of each target point in the preset number of target points;
and determining an area surrounded by a preset number of target points corresponding to the minimum area of the polygon as an area where the repeater interference source is located.
The detailed description of the method embodiments above may be referred to for specific functional implementation of each module provided in this embodiment.
Fig. 7 is a schematic hardware structure diagram of a computer device according to an embodiment of the present invention. As shown in fig. 7, the present embodiment provides a computer apparatus 70 including: at least one processor 701 and a memory 702. The processor 701 and the memory 702 are connected by a bus 703.
In a specific implementation process, at least one processor 701 executes computer-executable instructions stored in the memory 702, so that at least one processor 701 executes the method for locating a repeater interference source in the above method embodiment.
For a specific implementation process of the processor 701, reference may be made to the above method embodiments, which implement principles and technical effects similar to each other, and details of this embodiment are not described herein again.
In the embodiment shown in fig. 7, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise high speed RAM memory and may also include non-volatile storage NVM, such as at least one disk memory.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
Another embodiment of the present application provides a computer-readable storage medium, where a computer executes instructions are stored in the computer-readable storage medium, and when a processor executes the computer execute the instructions, the method for locating a repeater interference source in the above method embodiment is implemented.
Another embodiment of the present application provides a computer program product, which includes a computer program, and the computer program is executed by a processor to implement the method for positioning an interference source of a repeater according to the first aspect of the embodiment of the present invention.
The computer-readable storage medium may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. Readable storage media can be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium may also reside as discrete components in the apparatus.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (12)

1. A method for positioning interference source of repeater station includes:
determining a target base station cell in a plurality of base station cells in a preset area, wherein the target base station cell is a cell with a self busy hour bottom noise value larger than a preset threshold value in the plurality of base station cells;
acquiring the working parameter data of the target base station cell;
determining the space propagation loss of a signal from a repeater interference source to the target base station cell according to the working parameter data of the target base station cell and the predetermined noise power output value of a signal amplifier in the repeater interference source;
and determining the position information of the repeater interference source according to the space propagation loss.
2. The method of claim 1, wherein determining spatial propagation loss of a signal from a repeater interferer to the target base station cell based on the target base station cell's operating parameter data and a predetermined noise power output value of a signal amplifier in the repeater interferer comprises:
determining the antenna receiving gain of the target base station cell according to the working parameter data of the target base station cell;
and determining the space propagation loss according to the noise power output value, the bottom noise of the target base station cell, the antenna receiving gain of the target base station cell and a first formula.
3. The method of claim 2, wherein the first formula is:
Li＝P0-RSSI+Gi；
wherein L isiRepresents the spatial propagation loss, P, of a signal from the repeater interferer to the target base station cell0Representing the noise power output value, RSSI representing the background noise of the target base station cell, GiRepresenting the antenna reception gain of the target base station cell.
4. The method of claim 2 or 3, wherein the operational parameters include latitude and longitude information and azimuth information of the target base station cell, and wherein the determining the antenna reception gain of the target base station cell according to the operational parameters of the target base station cell comprises:
establishing a coordinate system by taking the position corresponding to the latitude and longitude information of the target base station cell as an origin and taking the direction indicated by the azimuth information as a transverse axis positive direction;
taking the origin as a starting point, and taking the antenna receiving gain in a signal radiation range with the transverse axis as a central axis as a maximum value, wherein the signal radiation range is a radiation range with the origin as the starting point and a first included angle with the central axis;
and taking the original point as a starting point, and when the included angle between the signal radiation direction and the central axis is increased by a first included angle, the antenna receiving gain in the radiation range is decreased by a preset value.
5. The method of claim 4, wherein the location of the repeater interference source is determined by the spatial propagation loss and the antenna reception gain of the target base station cell, and the antenna reception gain of the target base station cell corresponds to an angle between the repeater interference source and the target base station cell, the method further comprising:
and determining the position information of the interference source of the repeater according to the space propagation loss and the included angle between the interference source of the repeater and the target base station cell.
6. The method of claim 5, wherein the determining the location information of the repeater interference source according to the spatial propagation loss and the angle between the repeater interference source and the target base station cell comprises:
determining the value of the antenna receiving gain of the target base station cell according to the included angle between the repeater interference source and the target base station cell and a second formula;
substituting the antenna receiving gain values of the target base station cell into the first formula respectively to obtain the space propagation loss corresponding to the included angle of the position of the repeater interference source relative to the target base station cell;
determining a distance value between a first number of repeater interference sources and the target base station cell according to the space propagation loss and space path propagation loss formula;
determining longitude and latitude information of target points in a target number corresponding to each target base station cell according to an included angle between the repeater interference source and the target base station cell and a distance between the repeater interference source and the target base station cell, wherein the target number is a product of the first number and a second number, and the second number is a number of included angle values between the repeater interference source and the target base station cell;
and determining the position information of the repeater interference source according to the longitude and latitude information of the target number of target points corresponding to each target base station cell.
7. The method of claim 6, wherein the second formula is:
Figure FDA0003102224180000021
k represents an included angle of the position of the repeater interference source relative to the target base station cell, alpha represents a first included angle formed by the origin point serving as a starting point and the signal radiation direction and the central axis, and P represents a distance between the repeater interference source and the central axishRepresents the maximum value of the antenna reception gain, and m represents the preset value.
8. The method according to claim 6 or 7, wherein the determining the location information of the repeater interference source according to the longitude and latitude information of the target number of target points corresponding to each target base station cell comprises:
determining effective base station cells, wherein the effective base station cells are preset number of cells with the largest noise value in all target base station cells;
respectively and randomly selecting a target point from the target number of target points corresponding to each effective base station cell to obtain a preset number of target points;
determining the area of a polygon enclosed by a preset number of target points according to the longitude and latitude information of each target point in the preset number of target points;
and determining an area surrounded by a preset number of target points corresponding to the minimum area of the polygon as an area where the repeater interference source is located.
9. A repeater interference source positioning device is characterized by comprising:
the processing module is used for determining a target base station cell in a plurality of base station cells in a preset area, wherein the target base station cell is a cell with a self busy hour base noise value larger than a preset threshold value in the plurality of base station cells;
an obtaining module, configured to obtain the operating parameter data of the target base station cell;
the processing module is further used for determining the spatial propagation loss of a signal from the repeater interference source to the target base station cell according to the working parameter data of the target base station cell and the predetermined noise power output value of a signal amplifier in the repeater interference source;
and the positioning module is used for determining the position information of the repeater interference source according to the space propagation loss.
10. A computer device, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method of locating a repeater interference source as claimed in any of claims 1-8.
11. A computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the method for positioning an interference source of a repeater according to any one of claims 1 to 8 is implemented.
12. A computer program product comprising a computer program, wherein the computer program when executed by a processor implements the method for locating a repeater interference source of any of claims 1-8.
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