CN114520951B - Pseudo base station positioning method and device - Google Patents

Abstract

The embodiment of the invention provides a pseudo base station positioning method and device, wherein the method comprises the following steps: determining a target detection area, wherein the target detection area is an area surrounded by a plurality of target base stations; dividing a target detection area into a plurality of unit areas; selecting one unit area from a plurality of unit areas as a unit area to be detected, and adjusting the azimuth angle of each target base station so that the sector of each target base station covers the unit area to be detected; adjusting the reference signal transmitting power of each target base station so that the reference signal receiving power of the unit area to be detected is smaller than a preset threshold value; determining the TAU times of the user terminal in the unit area to be detected in the later time period, and calculating the increment value of the TAU times of the user terminal in the later time period relative to the user terminal in the previous time period; and if the increment value is greater than a preset frequency threshold, determining that the pseudo base station is in the unit area to be detected. The embodiment of the invention can improve the positioning efficiency and the positioning precision of the pseudo base station.

Description

Pseudo base station positioning method and device

technical field

The embodiments of the present invention relate to the technical field of communications, and in particular, to a method and device for locating a pseudo base station.

Background technique

Pseudo base station, also known as false base station and false base station, is an illegal radio communication device that utilizes the defect of GSM one-way authentication. It is mainly composed of a host computer and a laptop computer, and can search The GSM mobile phone information within the range is usually placed in a car or a relatively hidden place to send.

When the pseudo base station is running, it will cause serious interference to the operator's network and affect the network experience of its surrounding users. Moreover, with the advancement of communication technology, the number of pseudo base stations is also increasing, which cannot be ignored. One of the network problems. If the false base station does not coordinate with the operator's background to configure parameters, it will also affect the network. When the terminal accesses the illegal false base station, it may illegally collect user information and data in the coverage area, which poses a great threat to user privacy.

At present, the positioning of pseudo base stations depends on the daily network pulling test of relevant technical personnel and the handling of user complaints, or relevant technical personnel use location update signaling and base station handover failure signaling to locate pseudo base stations. However, the above method can only be processed when a problem is found, the efficiency is very low, and the positioning accuracy is not accurate.

Contents of the invention

Embodiments of the present invention provide a pseudo base station positioning method and device to overcome the technical problems of low positioning efficiency and inaccurate positioning accuracy of pseudo base stations in the prior art.

In a first aspect, an embodiment of the present invention provides a method for locating a pseudo base station, including:

Determining a target detection area, where the target detection area is an area surrounded by a plurality of target base stations;

dividing the target detection area into a plurality of unit areas;

Selecting a unit area among the plurality of unit areas as the unit area to be detected, and adjusting the azimuth angle of each target base station so that each sector of the target base station covers the unit area to be detected;

Adjusting the reference signal transmission power of each target base station, so that the reference signal reception power of the unit area to be detected is less than a preset threshold;

Respectively extract the first time period and the second time period of the user terminal in the tracking area update TAU times in the unit area to be detected, and calculate the TAU times difference between the second time period and the user terminal in the first time period, so The first time period is the same as the second time period and the second time period is after the first time period;

If it is determined that the difference is greater than the preset times threshold, it is determined that the pseudo base station is within the unit area to be detected; otherwise, it is determined that the pseudo base station is not within the unit area to be detected.

Optionally, the method also includes:

Each unit area in the plurality of unit areas is sequentially used as a new unit area to be detected, until the location of the pseudo base station in the entire target detection area.

Optionally, adjust the azimuth of each target base station, including:

Determine the azimuth angle value when the sector coverage direction of each target base station points to the unit area to be detected;

Judging whether the unit area to be detected is within the lobe coverage of the sector antennas of the multiple target base stations, and adjusting the azimuth angle of each target base station according to the judgment result and the azimuth angle value.

Optionally, the determining the azimuth value when the sector coverage direction of each target base station points to the unit area to be detected includes:

According to the coordinates of each target base station, the coordinates of the central point of the unit area to be detected and the first formula, the azimuth angle value when the sector coverage direction of each target base station points to the unit area to be detected is calculated, so The first formula is:

Among them, x _u and y _u represent the abscissa and ordinate of the center point of the unit area to be detected respectively, x _b and y _b represent the abscissa and ordinate of the target base station respectively, and θ represents the sector coverage direction of the target base station pointing to the The azimuth of the unit area to be detected.

Optionally, judging whether the unit area to be detected is within the lobe coverage of the sector antennas of the multiple target base stations, and adjusting the azimuth angle of each target base station according to the judgment result and the azimuth angle value, including :

According to the horizontal lobe width of the sector antenna of the target base station, the azimuth angle before the sector adjustment of the target base station, and a second formula, determine the adjusted azimuth angle of the target base station, and the second formula is:

Wherein, θ _b represents the azimuth angle before sector adjustment, θ _rl represents the horizontal lobe width of the sector antenna of the target base station, and θ _a represents the azimuth angle of the target base station after adjustment.

Optionally, before adjusting the reference signal transmission power of each target base station, the method further includes:

According to the wireless signal propagation model, determine the value of the reference signal transmission power of each target base station when the reference signal reception power of the unit area to be detected is less than the preset threshold value, so that according to the value of the reference signal transmission power of each target base station The value adjusts the reference signal transmission power of each target base station.

Optionally, according to a wireless signal propagation model, determining a reference signal transmit power value of each target base station when the reference signal receive power of the unit area to be detected is less than the preset threshold includes:

According to the coordinates of each target base station, the center point coordinates of the unit area to be detected, the wireless signal propagation model and the third formula, calculate the value of the reference signal transmission power of each target base station, the third formula is:

P _r =f(P _t ,d)

Among them, f(P _t , d) is a wireless signal propagation model with P _t and d as the main parameters, P _t represents the reference signal transmission power of the target base station, d represents the side length of the unit area to be detected, and P _r represents the The received power of the reference signal in the unit area, x _u and y _u represent the abscissa and ordinate of the center point of the unit area to be detected respectively, and x _b and y _b represent the abscissa and ordinate of the target base station, respectively.

In a second aspect, an embodiment of the present invention provides a device for locating a pseudo base station, including:

A determining module, configured to determine a target detection area, where the target detection area is an area surrounded by a plurality of target base stations;

A division module, configured to divide the target detection area into a plurality of unit areas;

An adjustment module, configured to select a unit area in the plurality of unit areas as the unit area to be detected, and adjust the azimuth angle of each target base station so that the sectors of each target base station cover the unit area to be detected ;

The adjustment module is also used to adjust the reference signal transmission power of each target base station, so that the reference signal reception power of the unit area to be detected is less than a preset threshold;

An extraction module, configured to extract the tracking area update TAU times of the user terminal in the unit area to be detected in the first time period and the second time period respectively, and calculate the TAU of the user terminal in the second time period and the first time period A difference in times, the duration of the first time period is the same as that of the second time period and the second time period is after the first time period;

The positioning module is configured to determine that the pseudo base station is within the unit area to be detected when the difference is greater than a preset times threshold; otherwise, determine that the pseudo base station is not within the unit area to be detected.

In a third aspect, an embodiment of the present invention provides an electronic device, including: at least one processor and a memory;

the memory stores computer-executable instructions;

The at least one processor executes the computer-executed instructions stored in the memory, so that the at least one processor executes the pseudo base station positioning method described in the above first aspect and various possible designs of the first aspect.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the processor executes the computer-executable instructions, the above first aspect and the first Aspects of various possible designs of the pseudo base station positioning method.

The pseudo base station positioning method and device provided by the embodiment of the present invention, the method determines the target detection area surrounded by multiple target base stations; then divides the target detection area into multiple unit areas; sequentially divides each of the multiple unit areas The unit area is used as the unit area to be detected, and it is judged whether the pseudo base station is in the unit area to be detected, thereby improving the positioning accuracy of the pseudo base station. And, by adjusting the azimuth angle of each target base station, the sectors of each target base station cover the unit area to be detected; then adjust the reference signal transmission power of each target base station, so that the reference signal of the unit area to be detected receives The power is less than the preset threshold; determine the number of TAUs of the user terminal in the unit area to be detected in the next time period, and calculate the incremental value of the number of TAUs of the user terminal in the next time period relative to the previous time period; If the increment value is greater than the preset number of times threshold, it is determined that the pseudo base station is within the unit area to be detected, thereby improving the positioning efficiency of the pseudo base station.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is an application scene diagram of a pseudo base station positioning method provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a pseudo base station positioning method provided by an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a method for locating a pseudo base station according to another embodiment of the present invention;

FIG. 4 is an application scenario diagram of a pseudo base station positioning method provided by another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a pseudo base station positioning device provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of a hardware structure of an electronic device provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In the related technology, the signal of the pseudo base station will cause serious interference to the operator's network, affecting the network experience of its surrounding users, and with the advancement of communication technology, the number of pseudo base stations is also increasing. One of the network problems that cannot be ignored. If the false base station does not coordinate with the operator's background to configure parameters, it will also affect the network. When the terminal accesses the illegal false base station, it may illegally collect user information and data in the coverage area, which poses a great threat to user privacy. At present, the positioning of pseudo-base stations relies on daily network pulling tests and complaint handling. It can only be dealt with point-by-point when problems are found, which is very inefficient and passive, and cannot fully solve the problem. In addition, there are also tracking area update signaling and handover failure signaling to locate the pseudo base station. The method of locating the pseudo base station simply by obtaining the location update signaling that the terminal re-initiates to the network after it escapes from the influence of the pseudo base station can only locate the pseudo base station. In the tracking area, the positioning accuracy is insufficient, and the method of locating the fake base station by handover failure signaling is difficult to screen out the root cause of the problem caused by the fake base station. Overall, the positioning efficiency of the fake base station is very low, and the positioning accuracy is not accurate.

To address this defect, the technical idea provided by this application is: by determining the target detection area surrounded by multiple target base stations; then dividing the target detection area into multiple unit areas; In the unit area to be detected, it is judged whether the pseudo base station is in the unit area to be detected, which improves the positioning accuracy of the pseudo base station. And, by adjusting the azimuth angle of each target base station, the sectors of each target base station cover the unit area to be detected; then adjust the reference signal transmission power of each target base station, so that the reference signal of the unit area to be detected receives The power is less than the preset threshold; determine the tracking area update (Tracking Area Update, TAU) times of the user terminal in the unit area to be detected in the subsequent time period, and calculate the number of user terminals in the latter time period relative to the previous time period Incremental value of TAU times of the terminal; if the incremental value is greater than the preset number of times threshold, it is determined that the pseudo base station is within the unit area to be detected, thereby improving the positioning efficiency of the pseudo base station.

FIG. 1 is a flow application scenario diagram of a method for locating a pseudo base station provided by an embodiment of the present invention.

As shown in Figure 1, the basic architecture of the application scenario provided by this embodiment mainly includes: a server 101, multiple base stations 102, and multiple pseudo base stations 103 distributed within the coverage of multiple base stations; The data locates the locations of multiple pseudo base stations.

FIG. 2 is a schematic flowchart of a pseudo base station positioning method provided by an embodiment of the present invention. The execution body of the method provided by this embodiment may be the server in the embodiment shown in FIG. 1 .

As shown in FIG. 2, the method provided in this embodiment may include the following steps.

S201. Determine a target detection area, where the target detection area is an area surrounded by a plurality of target base stations.

Specifically, select an area surrounded by several live network 4G base stations, for example, select several live network 4G base stations, and then use several base stations as endpoints to connect several endpoints in turn to form a target detection area .

In a possible embodiment, a point is randomly selected in the target detection area as the coordinate origin O, preferably, a plane rectangular coordinate system xOy with the due east direction as the horizontal axis x and the due north direction as the vertical axis y, and the unit is m, determine the coordinates (x _b1 , y _b1 ), (x _b2 , y _b2 ), (x _b3 , y _b3 ), . . . of each base station in the coordinate system.

S202. Divide the target detection area into multiple unit areas.

Specifically, the side length of the unit area is determined as d, starting from the origin of the coordinate system, the abscissa cuts the area vertically at the interval of the side length d of the unit area, and the vertical coordinate cuts the area horizontally at the interval of the side length d of the unit area, and the entire The area is divided into multiple small areas with side length d and area d×d, and each small area of d×d is a unit area.

S203. Select a unit area from the plurality of unit areas as the unit area to be detected, and adjust the azimuth angle of each target base station so that the sectors of each target base station cover the unit area to be detected.

Specifically, first select the unit area at the upper left of the Cartesian coordinate system, and its center point coordinates are (x _u , y _u ), and adjust the azimuth angle of the direction sector in the coverage area of the 4G base station at the corner of the entire target detection area so that The selected unit area is within the sector coverage.

S204. Adjust the reference signal transmission power of each target base station, so that the reference signal reception power of the unit area to be detected is less than a preset threshold.

Specifically, according to the wireless signal propagation model, the power of each corner base station sector is calculated when the unit area to be detected forms weak coverage, where the weak coverage refers to the reference signal received power RSRP of the unit area to be detected is less than a preset threshold. Then use the network management to adjust the power parameters of each sector to the calculated power value, so that the unit area presents a weak coverage situation. Assume that the reference signal transmission power of a certain sector is P _t , and the center point of the unit area to be detected receives The received power of the reference signal is P _r , the coordinates of the center point of the unit area to be detected in the Cartesian coordinate system are (x _u , y _u ), the coordinates of the base station where the sector is located are (x _b , y _b ), and the sector antenna The distance to the center point of the received unit area is d, and the calculation formula of P _r is as follows:

P _r =f(P _t ,d)

Where f(P _t , d) is a wireless signal propagation model with P _t and d as main parameters.

其中h_t、P_t、G_t分别为实际基站天线高度、发射功率和天线增益，h_tREF、P_tREF、G_tREF分别为测量P_r1和γ时的基站天线高度、发射功率和天线增益，假设选定单位区域达到弱覆盖标准的RSRP门限值为P_rth，将其代入P_r＝f(P_t，d)中可得到以下方程：Exemplarily, taking the LEE macro-cell model as an example, P _r =P _r1 +(-γ)d+α ₀ , where γ is the distance attenuation factor, and P _r1 is in a specific city, when the base station antenna is a half-wavelength antenna , when the transmission power is high and the transmission power is a specific value, the received power at 1km, α ₀ is the correction factor,

where h _t , P _t , and G _t are the actual base station antenna height, transmit power, and antenna gain, respectively; h _tREF , P _tREF , and G _tREF are the base station antenna height, transmit power, and antenna gain when measuring P _r1 and γ, respectively, assuming The RSRP threshold value of the selected unit area reaching the weak coverage standard is P _rth , which can be substituted into P _r =f(P _t , d) to obtain the following equation:

P _rth =f(P _t ,d)

Solving the equation can obtain the reference signal transmit power P _t that needs to be adjusted for the corresponding base station sector.

S205, respectively extract the number of TAU updates of the tracking area of the user terminal in the unit area to be detected in the first time period and the second time period, and calculate the difference between the number of TAUs of the user terminal in the second time period and the first time period , the duration of the first time period is the same as that of the second time period, and the second time period is after the first time period.

S206. If it is determined that the difference is greater than the preset times threshold, determine that the pseudo base station is within the unit area to be detected; otherwise, determine that the pseudo base station is not within the unit area to be detected.

Specifically, use the network management to count the number of user TAU times that the sectors re-accessed when the terminal initiates a TAU are the sectors of each corner base station covering the unit area to be detected. If the increment is greater than the threshold n _TA , it can be determined that the pseudo base station is in the unit area. If the increment is not greater than the threshold n _TA , there is no pseudo base station in the area.

Further, the method provided in this embodiment further includes: successively using each unit area in the plurality of unit areas as a new unit area to be detected, until the position of the pseudo base station in the entire target detection area.

Specifically, according to the principle from left to right and from top to bottom, the next unit area to be detected is reselected, and then according to the above steps S203-S206, whether there is a pseudo base station in the new unit area to be detected is obtained, until the entire unit area to be detected is traversed. The unit area in the area can locate the position of the pseudo base station in the entire area.

FIG. 3 is a schematic flowchart of a pseudo base station positioning method provided by another embodiment of the present invention. On the basis of the embodiment shown in FIG. 2 , this embodiment uses specific examples to describe the pseudo base station positioning method in detail.

As shown in FIG. 3 , the method provided in this embodiment may include the following steps.

S301. Determine a target detection area, where the target detection area is an area surrounded by a plurality of target base stations.

Specifically, select a target detection area surrounded by several existing network 4G base stations, randomly select a point in the area as the coordinate origin O, preferably, take the due east direction as the horizontal axis x, and the due north direction as the vertical axis y The plane Cartesian coordinate system xOy, the unit is m, determine the coordinates of each corner base station.

Exemplarily, as shown in Figure 4, a triangular area surrounded by three 4G base stations is selected, and the coordinates of the three base stations on the corners in the coordinate system are determined to be (x _b1 , y _b1 ), (x _b2 , y _b2 ), (x _b3 , y _b3 ).

S302. Divide the target detection area into multiple unit areas.

Specifically, set the side length of the unit area as d. For example, set the side length of the unit area as 50m. Starting from the origin of the coordinate system, the abscissa cuts the area vertically at intervals of 50m, and the ordinate is in units The area is cut horizontally at intervals of 50m on a side, and the entire area is divided into multiple small areas with a side length of 50m and an area of 50m×50m. The divided picture is shown in Figure 4.

S303. Select a unit area in the plurality of unit areas as the unit area to be detected, and determine an azimuth value when the sector coverage direction of each target base station points to the unit area to be detected.

Specifically, select an untraversed unit area according to the principle from left to right and from top to bottom, and the coordinates of its center point are (x _u , y _u ), and calculate the direction of each corner of the area within the coverage area of the base station The azimuth angle θ when the sector is facing and covering the unit area 401 to be detected, the calculation formula of θ is as follows:

Among them, x _b , y _b are the coordinates of the base station where the corner base station sector is located respectively, and the coordinates of the base station in each sector are (x _b1 , y _b1 ), (x _b2 , y b2 ), (x b3 , y _b2 ), (x _b3 , y _b3 ), ... Exemplarily, the base station with coordinates (x _b1 , y _b1 ) is on the left side of the center point of the selected unit area, then

Wherein, the first unit area to be detected is 402 in FIG. 4 , and the last unit area to be detected is 403 in FIG. 4 .

S304. Judging whether the unit area to be detected is within the lobe coverage of the sector antennas of the multiple target base stations, and adjusting the azimuth angle of each target base station according to the judgment result and the azimuth angle value, so that each The sectors of the target base station all cover the unit area to be detected.

Specifically, determine whether the selected unit area is within the lobe coverage of the sector 4G antenna of the corner base station, and then adjust the sector azimuth according to the situation. The adjusted azimuth θ _a is as follows:

Among them, θ _b is the azimuth angle before sector adjustment, and θ _rl is the horizontal lobe width of the sector antenna of the 4G base station. Exemplarily, the horizontal lobe width of the 4G antenna is 60°, and when the difference between the azimuth angle θ _b before adjustment and the azimuth angle θ facing the selected unit area exceeds 30°, it means that the previous antenna coverage direction cannot satisfy the selected unit area. The unit area is determined, and the antenna azimuth is adjusted to θ facing the selected unit area.

S305. Adjust the reference signal transmission power of each target base station, so that the reference signal reception power of the unit area to be detected is less than a preset threshold.

Specifically, according to the wireless signal propagation model, the power of each corner base station sector is calculated when the selected unit area forms weak coverage, and the network management is used to adjust the power parameters of each sector to the calculated power value to make the unit area appear weak. Coverage status, assuming that the reference signal transmission power of a certain sector is P _t , the reference signal received power RSRP received by the center point of the selected unit area is P _r , and the center point of the selected unit area is in the Cartesian coordinate system The coordinates are (x _u , y _u ), the coordinates of the base station where the sector is located are (x _b , y _b ), the distance from the sector antenna to the center point of the receiving unit area is d, and the calculation formula of P _r is as follows:

P _r =f(P _t ,d)

Among them, f(P _t , d) is the wireless signal propagation model with P _t and d as the main parameters, assuming that the RSRP threshold value of the selected unit area reaching the weak coverage standard is P _rth , it is substituted into P _r =f( P _t , d) can get the following equation:

P _rth =f(P _t ,d)

Solving the equation can obtain the reference signal transmit power P _t that needs to be adjusted for the corresponding base station sector.

其中h_t、P_t、G_t分别为实际基站天线高度、发射功率和天线增益，h_tREF、P_tREF、G_tREF分别为测量P_r1和γ时的基站天线高度、发射功率和天线增益，可得到坐标为(x_b1，y_b1)的基站的扇区所对应的P_rth＝f(P_t，d) 方程如下：Exemplarily, P _rth is -115dBm, using the LEE macro-cell model, P _r =P _r1 +(-γ)d+α ₀ , where γ is the distance attenuation factor, and P _r1 is in a specific city, when the base station antenna is the half-wavelength antenna, when the height and the transmission power are at a specific value, the received power at 1km, α ₀ is the correction factor,

where h _t , P _t , and G _t are the actual base station antenna height, transmit power, and antenna gain, respectively; h _tREF , P _tREF , and G _tREF are the base station antenna height, transmit power, and antenna gain when measuring P _r1 and γ, respectively. The equation P _rth = f(P _t , d) corresponding to the sector of the base station with the coordinates (x _b1 , y _b1 ) is obtained as follows:

By solving the equation, the power value P _t that needs to be adjusted to the reference signal transmission power of the sector of the base station with the coordinates (x _b1 , y _b1 ) is:

S306, respectively extract the number of TAU updates of the tracking area of the user terminal in the unit area to be detected in the first time period and the second time period, and calculate the difference between the number of TAUs of the user terminal in the second time period and the first time period , the duration of the first time period is the same as that of the second time period and the second time period is after the first time period; if it is determined that the difference is greater than a preset times threshold, it is determined that the pseudo base station is in the within the unit area to be detected; otherwise, determine that the pseudo base station is not within the unit area to be detected.

Specifically, use the network management to count the number of user TAU times when the terminal re-accessed the sector when the terminal initiates the TAU is the sector of each corner base station covering the selected unit area, compared with the number of TAU times that accessed these sectors in the same time before, the When the increment is greater than the threshold n _TA , it can be determined that the pseudo base station is within the unit area. Exemplarily, the statistical duration is 1 hour, and the threshold n _TA is 100. If the number of user TAUs within 1 hour exceeds 100 more than the previous same time, it can be located that the pseudo base station exists in the unit area. If it does not exceed 100, the unit area There is no pseudo base station in the network.

S307, judging whether the unit area to be detected is the last unit area in the entire area, if not, jump to S303, and select the next unit area to be detected; if so, the process ends, and all the units in the entire target detection area can be located The location of the existing pseudo base station.

In this embodiment, by determining the target detection area surrounded by a plurality of target base stations; then dividing the target detection area into multiple unit areas; sequentially using each unit area in the multiple unit areas as the unit area to be detected, and judging the false Whether the base station is in the unit area to be detected improves the positioning accuracy of the pseudo base station. And, by adjusting the azimuth angle of each target base station, the sectors of each target base station cover the unit area to be detected; then adjust the reference signal transmission power of each target base station, so that the reference signal of the unit area to be detected receives The power is less than the preset threshold; determine the number of TAUs of the user terminal in the unit area to be detected in the next time period, and calculate the incremental value of the number of TAUs of the user terminal in the next time period relative to the previous time period; If the increment value is greater than the preset number of times threshold, it is determined that the pseudo base station is within the unit area to be detected, thereby improving the positioning efficiency of the pseudo base station.

FIG. 5 is a schematic structural diagram of a device for locating a pseudo base station according to an embodiment of the present invention.

As shown in Figure 5, the device provided by this embodiment includes: a determination module 501, a division module 502, an adjustment module 503, an extraction module 504, and a positioning module 505; wherein, the determination module 501 is used to determine the target detection area, and the target The detection area is an area enclosed by multiple target base stations; the dividing module 502 is used to divide the target detection area into multiple unit areas; the adjustment module 503 is used to select a unit area among the multiple unit areas as the unit area to be detected, and adjust the azimuth angle of each target base station so that the sectors of each target base station cover the unit area to be detected; the adjustment module is also used to adjust the reference signal transmission power of each target base station , so that the reference signal received power of the unit area to be detected is less than a preset threshold; the extraction module 504 is configured to extract tracking area updates of the user terminal in the unit area to be detected within the first time period and the second time period respectively TAU times, and calculate the difference between the TAU times of the user terminal in the second time period and the first time period, the first time period is the same as the second time period and the second time period is within the first time period After the section; the positioning module 505 is configured to determine that the pseudo base station is within the unit area to be detected when the difference is greater than a preset times threshold; otherwise, determine that the pseudo base station is not within the unit area to be detected.

Further, the device further includes: the adjustment module is further configured to: sequentially use each unit area in the plurality of unit areas as a new unit area to be detected until the position of the pseudo base station in the entire target detection area.

Further, the adjustment module is specifically used for:

Determine the azimuth angle value when the sector coverage direction of each target base station points to the unit area to be detected;

Judging whether the unit area to be detected is within the lobe coverage of the sector antennas of the multiple target base stations, and adjusting the azimuth angle of each target base station according to the judgment result and the azimuth angle value.

Further, the adjustment module is specifically used for:

According to the coordinates of each target base station, the coordinates of the central point of the unit area to be detected and the first formula, the azimuth angle value when the sector coverage direction of each target base station points to the unit area to be detected is calculated, so The first formula is:

Among them, x _u and y _u represent the abscissa and ordinate of the center point of the unit area to be detected respectively, x _b and y _b represent the abscissa and ordinate of the target base station respectively, and θ represents the sector coverage direction of the target base station pointing to the The azimuth of the unit area to be detected.

Further, the adjustment module is specifically used for:

According to the horizontal lobe width of the sector antenna of the target base station, the azimuth angle before the sector adjustment of the target base station, and a second formula, determine the adjusted azimuth angle of the target base station, and the second formula is:

Wherein, θ _b represents the azimuth angle before sector adjustment, θ _r1 represents the horizontal lobe width of the sector antenna of the target base station, and θ _a represents the azimuth angle of the target base station after adjustment.

Further, the adjustment module is specifically used for:

According to the wireless signal propagation model, determine the value of the reference signal transmission power of each target base station when the reference signal reception power of the unit area to be detected is less than the preset threshold value, so that according to the value of the reference signal transmission power of each target base station The value adjusts the reference signal transmission power of each target base station.

Further, the adjustment module is specifically used for:

According to the coordinates of each target base station, the center point coordinates of the unit area to be detected, the wireless signal propagation model and the third formula, calculate the value of the reference signal transmission power of each target base station, the third formula is:

P _r =f(P _t ,d)

Among them, f(P _t , d) is a wireless signal propagation model with P _t and d as the main parameters, P _t represents the reference signal transmission power of the target base station, d represents the side length of the unit area to be detected, and P _r represents the The received power of the reference signal in the unit area, x _u and y _u represent the abscissa and ordinate of the center point of the unit area to be detected respectively, and x _b and y _b represent the abscissa and ordinate of the target base station, respectively.

The device provided in this embodiment can be used to implement the technical solutions of the above method embodiments, and its implementation principle and technical effect are similar, so this embodiment will not repeat them here.

FIG. 6 is a schematic diagram of a hardware structure of an electronic device provided by an embodiment of the present invention. As shown in FIG. 6, the electronic device 60 of this embodiment includes: a processor 601 and a memory 602;

memory 602, for storing computer-executable instructions;

The processor 601 is configured to execute the computer-executable instructions stored in the memory, so as to implement each step performed by the method for identifying a network coverage problem in the foregoing embodiments. For details, refer to the related descriptions in the foregoing method embodiments.

Optionally, the memory 602 can be independent or integrated with the processor 601 .

When the memory 602 is set independently, the electronic device further includes a bus 603 for connecting the memory 602 and the processor 601 .

An embodiment of the present invention also provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the pseudo base station positioning method as described above is implemented.

In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods, for example, multiple modules can be combined or integrated. to another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical, mechanical or other forms.

The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to implement the solution of this embodiment.

In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, or each module may physically exist separately, or two or more modules may be integrated into one unit. The units formed by the above modules can be implemented in the form of hardware, or in the form of hardware plus software functional units.

The above-mentioned integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The above-mentioned software function modules are stored in a storage medium, and include several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) or a processor execute some steps of the methods described in various embodiments of the present application.

It should be understood that the above-mentioned processor may be a central processing unit (Central Processing Unit, referred to as CPU), and may also be other general-purpose processors, a digital signal processor (Digital Signal Processor, referred to as DSP), an application specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC) and so on. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in conjunction with the invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

The storage may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk storage, and may also be a U disk, a mobile hard disk, a read-only memory, a magnetic disk, or an optical disk.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, the buses in the drawings of the present application are not limited to only one bus or one type of bus.

The above-mentioned storage medium can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable In addition to programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be located in application specific integrated circuits (Application Specific Integrated Circuits, ASIC for short). Of course, the processor and the storage medium can also exist in the electronic device or the main control device as discrete components.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. A pseudo base station positioning method, comprising:

determining a target detection area, wherein the target detection area is an area surrounded by a plurality of target base stations;

dividing the target detection area into a plurality of unit areas, wherein the unit area is determined as follows: dividing the target detection area into a plurality of small block areas with side length d and area d multiplied by d, wherein each small block area d multiplied by d is a unit area;

selecting one unit area from the plurality of unit areas as a unit area to be detected, and adjusting the azimuth angle of each target base station so that the sector of each target base station covers the unit area to be detected;

adjusting the reference signal transmitting power of each target base station so that the reference signal receiving power of the unit area to be detected is smaller than a preset threshold value;

respectively extracting the updating TAU times of the tracking area of the user terminal in the unit area to be detected in a first time period and a second time period, and calculating the difference value of the TAU times of the user terminal in the first time period and the second time period, wherein the duration of the first time period and the duration of the second time period are the same, and the second time period is after the first time period;

if the difference value is larger than the preset frequency threshold value, determining that the pseudo base station is in the unit area to be detected; otherwise, determining that the pseudo base station is not in the unit area to be detected.

2. The method as recited in claim 1, further comprising:

and taking each unit area in the plurality of unit areas as a new unit area to be detected in sequence until the position of the pseudo base station in the whole target detection area is reached.

3. The method of claim 2, wherein adjusting the azimuth of each target base station comprises:

determining azimuth angle values when the sector coverage direction of each target base station points to the unit area to be detected;

judging whether the unit area to be detected is in the lobe coverage range of sector antennas of the target base stations or not, and adjusting the azimuth angle of each target base station according to the judging result and the azimuth angle value.

4. The method of claim 3, wherein determining an azimuth value for each target base station when the sector coverage direction of the target base station points to the unit area to be detected comprises:

according to the coordinates of each target base station, the coordinates of the central point of the unit area to be detected and a first formula, calculating to obtain an azimuth value when the sector coverage direction of each target base station points to the unit area to be detected, wherein the first formula is as follows:

wherein x is _u 、y _u Respectively representing the abscissa and the ordinate of the central point of the unit area to be detected, and x _b 、y _b And respectively representing the abscissa and the ordinate of the target base station, wherein theta represents the azimuth angle when the sector coverage direction of the target base station points to the unit area to be detected.

5. The method of claim 4, wherein determining whether the unit area to be detected is within a lobe coverage of sector antennas of the plurality of target base stations, and adjusting an azimuth of each target base station based on the determination and the azimuth value, comprises:

determining the azimuth angle after the adjustment of the target base station according to the horizontal lobe width of the sector antenna of the target base station, the azimuth angle before the adjustment of the sector of the target base station and a second formula, wherein the second formula is as follows:

wherein θ _b Indicating azimuth angle, θ, before sector adjustment _rl Horizontal lobe width, θ, representing sector antenna of target base station _a Indicating the adjusted azimuth angle of the target base station.

6. The method of claim 1, wherein prior to said adjusting the reference signal transmit power for each target base station, the method further comprises:

and determining a value of the reference signal transmitting power of each target base station when the reference signal receiving power of the unit area to be detected is smaller than the preset threshold according to a wireless signal propagation model, so as to adjust the reference signal transmitting power of each target base station according to the value of the reference signal transmitting power of each target base station.

7. The method of claim 6, wherein determining the value of the reference signal transmit power for each target base station such that the reference signal received power for the unit area to be detected is less than the preset threshold according to the wireless signal propagation model comprises:

according to the coordinates of each target base station, the coordinates of the central point of the unit area to be detected, the wireless signal propagation model and a third formula, calculating to obtain the value of the reference signal transmitting power of each target base station, wherein the third formula is as follows:

P _r ＝f(P _t ,d)

wherein f (P _t D) is represented by P _t Radio signal propagation model with d as main parameter, P _t Representing the reference signal transmitting power of the target base station, and d represents the side length of the unit area to be detected，P _r Indicating the reference signal received power, x, of the unit area to be detected _u 、y _u Respectively representing the abscissa and the ordinate of the central point of the unit area to be detected, and x _b 、y _b Respectively representing the abscissa and the ordinate of the target base station.

8. A pseudo base station positioning apparatus, comprising:

the determining module is used for determining a target detection area, wherein the target detection area is an area surrounded by a plurality of target base stations;

a dividing module, configured to divide the target detection area into a plurality of unit areas, where the unit area is determined in the following manner: dividing the target detection area into a plurality of small block areas with side length d and area d multiplied by d, wherein each small block area d multiplied by d is a unit area;

the adjusting module is used for selecting one unit area from the plurality of unit areas as a unit area to be detected, and adjusting the azimuth angle of each target base station so that the sector of each target base station covers the unit area to be detected;

the adjusting module is further configured to adjust reference signal transmitting power of each target base station, so that reference signal receiving power of the unit area to be detected is smaller than a preset threshold;

the extraction module is used for respectively extracting the tracking area updating TAU times of the user terminal in the unit area to be detected in a first time period and a second time period, and calculating the TAU times difference value of the user terminal in the first time period and the second time period, wherein the duration of the first time period and the duration of the second time period are the same, and the second time period is after the first time period;

the positioning module is used for determining that the pseudo base station is in the unit area to be detected when the difference value is larger than a preset frequency threshold value; otherwise, determining that the pseudo base station is not in the unit area to be detected.

9. An electronic device, comprising: at least one processor and memory;

the memory stores computer-executable instructions;

the at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the pseudo base station positioning method as claimed in any one of claims 1 to 7.

10. A computer readable storage medium having stored therein computer executable instructions which, when executed by a processor, implement the pseudo base station positioning method according to any of claims 1 to 7.

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