A 5G positioning method and device for determining a position in an indoor area

Abstract

This invention discloses a method and apparatus for determining the location of a 5G positioning point in an indoor area. The method involves acquiring the coordinates of a first, second, and third positioning point within a preset radius of a base station; determining whether buildings exist within a preset distance of the first and second positioning points; if no buildings exist, calculating the estimated signal loss between the first and second positioning points based on the received power value of the reference signal received by the second positioning point from the first positioning point, obtaining a first estimated loss value; calculating a second estimated value for the third positioning point based on the first estimated loss value; and determining whether the third positioning point is indoors or outdoors based on the second estimated value, the estimated signal loss value inside a building, and the estimated signal loss value outside a building. This method, by utilizing precise signal loss calculation, can accurately determine whether a positioning point is indoors or outdoors even when 5G MR geometric positioning errors are large.

Description

Technical Field

[0001] The present invention relates to the field of 5G communication positioning technology, and in particular to a 5G positioning position determination method and device for an indoor area. Background Art

[0002] In the field of positioning of 5G communication technology, the main positioning methods currently include geometric positioning methods based on technologies such as signal arrival time (TOA), signal arrival angle (AOA), and signal strength (such as RSRP reference signal received power). Among them, geometric positioning based on 5G measurement reports is one of the commonly used means. This positioning method determines the location of the mobile terminal by measuring the signal-related parameters between the base station and the mobile terminal and using geometric relationships. In addition, in terms of indoor and outdoor position judgment, some existing technologies use additional sensors to assist in judgment. For example, in some high-end buildings, indoor positioning sensors such as Bluetooth beacons and Wi-Fi access points are installed to determine whether they are indoors through the interaction between the mobile terminal and these sensors. There are also some technologies based on the concept of geo-fencing, which infer the indoor and outdoor status through the pre-set geographical area range and the location information of the mobile terminal.

[0003] Although the geometric positioning based on 5G measurement reports can roughly determine the location of the mobile terminal, its error can reach 39 meters in some cases. This large error can lead to serious positioning inaccuracy in some specific scenarios. For example, in the edge area of ​​a building, due to the existence of positioning errors, the positions of some positioning points may cross the boundaries between the inside and outside of the building, making it impossible to accurately determine whether these points are located indoors or outdoors.

[0004] There are some limitations to the method of using sensors to assist in indoor and outdoor position determination. First, installing sensors requires additional costs, including the purchase, installation, and maintenance costs of sensor equipment. Second, this method has a limited coverage range and is only effective in areas where sensors are installed. It cannot accurately determine areas without sensor coverage. Moreover, the interaction between sensors and mobile terminals may be affected by environmental interference, such as signal blocking, electromagnetic interference, etc., which may affect the accuracy of the judgment.

[0005] Geofencing technology is relatively crude when it comes to determining indoor and outdoor locations. It is mainly based on pre-set geographic area boundaries, which are often set based on macro information such as map data and cannot be accurate to the internal structure of a building. For example, in some complex building structures, geofencing may not be able to accurately distinguish whether different areas inside the building are indoors or outdoors, especially at the edge of the building or in areas with special building structures. Summary of the invention

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a 5G positioning position determination method and device for an indoor area, so as to solve the technical problem of how to accurately determine whether the positioning point is located indoors or outdoors without relying on additional sensors and improving positioning accuracy.

[0007] A first aspect of an embodiment of the present invention provides a method for determining a 5G positioning position in an indoor area, the method comprising:

[0008] Obtaining coordinate positions of a first positioning point, a second positioning point, and a third positioning point within a preset radius of the base station;

[0009] Determine whether there is a building within a preset distance between the first positioning point and the second positioning point. If there is no building, calculate the estimated signal loss between the first positioning point and the second positioning point according to the reference signal receiving power value received by the second positioning point at the first positioning point to obtain a first estimated loss value;

[0010] A first distance is obtained according to the coordinate position of the first positioning point and the coordinate position of the second positioning point, a second distance is obtained according to the coordinate position of the second positioning point and the coordinate position of the third positioning point, and a second estimated value of the third positioning point is obtained by calculating according to the first distance, the second distance and the first estimated loss value;

[0011] A first difference is obtained based on the second estimated value and the estimated signal loss value inside the building, and a second difference is obtained based on the second estimated value and the estimated signal loss value outside the building. If the first difference is smaller than the second difference, it is determined that the third positioning point is indoors; if the first difference is greater than the second difference, it is determined that the third positioning point is outdoors.

[0012] In a possible implementation of the first aspect, calculating an estimated signal loss between the first positioning point and the second positioning point according to a reference signal reception power value received by the second positioning point at the first positioning point to obtain a first estimated loss value includes:

[0013] According to the reference signal receiving power value and the related constant received by the second positioning point at the first positioning point, the estimated signal loss between the first positioning point and the second positioning point is calculated to obtain a first estimated loss value, wherein the calculation formula of the estimated signal loss is:

[0014] L BA =20log 10 (d BA )+K-RSRP BA

[0015] Where, L BA is the first estimated loss value, d BA is the distance between the first positioning point and the second positioning point, K is the correlation constant, RSRP BAA reference signal receiving power value of the first positioning point is received for the second positioning point.

[0016] In a possible implementation manner of the first aspect, the value of the related constant is determined by performing multiple measurements on any two test positioning points in a preset area without buildings, including:

[0017] In a preset area without buildings, multiple distance measurements and reference signal receiving power value measurements are performed on any two test positioning points to obtain the test distance and test reference signal receiving power value at each measurement;

[0018] The error function is constructed according to the test distance and the test reference signal receiving power value at each measurement, where the error function is:

[0019]

[0020] Where, d i RSRP is the test distance between any two test positioning points in each measurement. i is the test reference signal receiving power value between any two test positioning points in each measurement, and K is a related constant;

[0021] The error function is differentiated and then solved to obtain the value of the relevant constant.

[0022] In a possible implementation manner of the first aspect, calculating according to the first distance, the second distance, and the first estimated loss value to obtain a second estimated value of the third positioning point includes:

[0023] The total loss between the first positioning point and the third positioning point is calculated according to the first distance, the second distance and the first estimated loss value, wherein the calculation formula of the total loss is:

[0024]

[0025] Where L' C is the total loss, d BA is the first distance, d CB is the second distance, L BA is the first estimated loss value;

[0026] Based on the calculation formula for estimating signal loss, the second estimated value of the third positioning point is obtained by conversion according to the total loss, wherein the second estimated value is:

[0027] RSRP' C =20log 10 (d BA +d CB )+K-L' C

[0028] Where RSRP' C is the second estimated value, L' C is the total loss, d BA is the first distance, d CB is the second distance, and K is the correlation constant.

[0029] In a possible implementation manner of the first aspect, obtaining a first difference according to the second estimated value and an estimated signal loss value within the building includes:

[0030] The absolute value of the difference between the second estimated value and the estimated signal loss value in the building is calculated to obtain a first difference, wherein the first difference is:

[0031] D in =|RSRP' C -RSRP in |

[0032] Where RSRP' C is the second estimated value, RSRP in Estimated signal loss value in the building, D in is the first difference.

[0033] In a possible implementation manner of the first aspect, obtaining a second difference according to the second estimated value and the estimated signal loss value outside the building includes:

[0034] The absolute value of the difference between the second estimated value and the estimated signal loss value outside the building is calculated to obtain a second difference, wherein the second difference is:

[0035] D OUT =|RSRP' C -RSRP OUT |

[0036] Where RSRP' C is the second estimated value, RSRP OUT Estimated signal loss value in the building, D OUT is the second difference.

[0037] In order to solve the same technical problem, a second aspect of an embodiment of the present invention provides a 5G positioning position determination device for an indoor area, the device comprising:

[0038] An acquisition module, used to acquire the coordinate positions of a first positioning point, a second positioning point and a third positioning point within a preset radius of the base station;

[0039] A judgment module, used to judge whether there is a building within a preset distance between the first positioning point and the second positioning point, and if there is no building, calculate the estimated signal loss between the first positioning point and the second positioning point according to the reference signal receiving power value received by the second positioning point at the first positioning point, to obtain a first estimated loss value;

[0040] A first calculation module is used to obtain a first distance according to the coordinate position of the first positioning point and the coordinate position of the second positioning point, obtain a second distance according to the coordinate position of the second positioning point and the coordinate position of the third positioning point, and calculate according to the first distance, the second distance and the first estimated loss value to obtain a second estimated value of the third positioning point;

[0041] The second calculation module is used to obtain a first difference based on the second estimated value and the estimated signal loss value inside the building, and to obtain a second difference based on the second estimated value and the estimated signal loss value outside the building. If the first difference is smaller than the second difference, it is determined that the third positioning point is indoors; if the first difference is greater than the second difference, it is determined that the third positioning point is outdoors.

[0042] In a possible implementation manner of the second aspect, the judgment module includes an estimation unit, wherein:

[0043] The estimation unit is used to calculate the estimated signal loss between the first positioning point and the second positioning point according to the reference signal reception power value and the related constant received by the second positioning point at the first positioning point, and obtain a first estimated loss value, wherein the calculation formula of the estimated signal loss is:

[0044] L BA =20log 10 (d BA )+K-RSRP BA

[0045] Where, L BA is the first estimated loss value, d BA is the distance between the first positioning point and the second positioning point, K is the correlation constant, RSRP BA A reference signal receiving power value of the first positioning point is received for the second positioning point.

[0046] A third aspect of an embodiment of the present invention provides a computer device, including:

[0047] Memory for storing computer programs;

[0048] A processor is used to implement the steps of the 5G positioning position determination method for an indoor area as in the first aspect when executing the computer program.

[0049] A fourth aspect of an embodiment of the present invention provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for determining a 5G positioning position in an indoor area according to the first aspect.

[0050] The technical solution of the present invention has the following advantages:

[0051] The 5G positioning position determination method for an indoor area provided by an embodiment of the present invention obtains the coordinate positions of a first positioning point, a second positioning point, and a third positioning point within a preset radius of a base station; determines whether there is a building within a preset distance between the first positioning point and the second positioning point, and if there is no building, calculates the estimated signal loss between the first positioning point and the second positioning point according to the reference signal receiving power value of the first positioning point received by the second positioning point, and obtains a first estimated loss value; obtains a first distance according to the coordinate position of the first positioning point and the coordinate position of the second positioning point, obtains a second distance according to the coordinate position of the second positioning point and the coordinate position of the third positioning point, and calculates according to the first distance, the second distance, and the first estimated loss value to obtain a second estimated value of the third positioning point; obtains a first difference according to the second estimated value and the estimated signal loss value in the building, and obtains a second difference according to the second estimated value and the estimated signal loss value outside the building. If the first difference is less than the second difference, it is determined that the third positioning point is indoors, and if the first difference is greater than the second difference, it is determined that the third positioning point is outdoors. The above method uses the signal characteristics of the 5G network itself (RSRP value) and the positioning point information of the base station sector, and utilizes accurate signal loss calculation and inference based on geometric relationships. It can more accurately determine whether the positioning point is located indoors or outdoors when the 5GMR geometric positioning error is large. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0053] Figure 1 This is a flow chart of a method for determining a 5G positioning position in an indoor area according to an embodiment of the present invention;

[0054] Figure 2 A schematic diagram of 5G base station signal coverage in a 5G positioning method for indoor areas according to an embodiment of the present invention;

[0055] Figure 3 This is a structural block diagram of a 5G positioning position determination device for an indoor area in an embodiment of the present invention. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] The 5G positioning position determination method for indoor areas provided by the embodiment of the present invention is as follows: Figure 1 As shown, Figure 1 The flowchart for determining the 5G positioning position in the indoor area includes steps S101 to S104, and each step is as follows:

[0059] S101: Obtain the coordinate positions of a first positioning point, a second positioning point, and a third positioning point within a preset radius of a base station.

[0060] In this embodiment, first, the relevant information of the 5GMR positioning points A, B, and C of the base station sector 1 is obtained, including their coordinate positions (x A ,y A )、(x B ,y B )、(x C ,y C ) and the building distribution within 39 meters of the A and B positioning points. The building distribution is obtained by querying the pre-stored building floor plan.

[0061] It should be noted that the preset radius range refers to sector 1, and the area of ​​the sector can be determined according to actual needs. 5GMR refers to the 5G measurement report, which is a report sent by the user equipment (UE) to the network side on its measurement results of the current wireless environment. Positioning point A refers to the first positioning point, positioning point B refers to the second positioning point, and positioning point C refers to the third positioning point.

[0062] S102: Determine whether there is a building within a preset distance between the first positioning point and the second positioning point. If there is no building, calculate the estimated signal loss between the first positioning point and the second positioning point based on the reference signal receiving power value received by the second positioning point from the first positioning point to obtain a first estimated loss value.

[0063] In this embodiment, it is determined whether there are any buildings within 39 meters of the A and B positioning points. If there are any buildings, it is necessary to reselect appropriate A and B positioning points to ensure that there are no buildings within 39 meters of them to meet the prerequisites for subsequent calculations.

[0064] If there is no building, then in the case where there is no building within 39 meters between positioning point A and positioning point B, the estimated signal loss from positioning point B to positioning point A is calculated to obtain a first positioning estimated loss value.

[0065] In one embodiment, the estimated signal loss between the first positioning point and the second positioning point is calculated according to the reference signal reception power value of the first positioning point received by the second positioning point to obtain the first estimated loss value, including:

[0066] According to the reference signal receiving power value and the related constant received by the second positioning point at the first positioning point, the estimated signal loss between the first positioning point and the second positioning point is calculated to obtain a first estimated loss value, wherein the calculation formula of the estimated signal loss is:

[0067] L BA =20log 10 (d BA )+K-RSRP BA

[0068] Where, L BA is the first estimated loss value, d BA is the distance between the first positioning point and the second positioning point, K is the correlation constant, RSRP BA A reference signal receiving power value of the first positioning point is received for the second positioning point.

[0069] In this embodiment, according to the free space propagation model, the signal loss (unit: dB) is related to the distance (unit: m) and the RSRP value. Assume that when there is no building blocking, the signal propagation conforms to the following formula:

[0070] L BA =20log 10 (d BA )+K-RSRP BA

[0071] Where, L BA is the first estimated loss value, d BA is the distance between the first positioning point and the second positioning point, K is the correlation constant, RSRP BA A reference signal receiving power value of the first positioning point is received for the second positioning point.

[0072] Among them, K is a constant related to transmit power, antenna gain, frequency, etc., RSRP BAThe RSRP value of the signal received by the B positioning point from the A positioning point.

[0073] In one embodiment, the value of the related constant is determined by performing multiple measurements on any two test positioning points in a preset area without buildings, including:

[0074] In a preset area without buildings, multiple distance measurements and reference signal receiving power value measurements are performed on any two test positioning points to obtain the test distance and test reference signal receiving power value at each measurement;

[0075] The error function is constructed according to the test distance and the test reference signal receiving power value at each measurement, where the error function is:

[0076]

[0077] Where, d i RSRP is the test distance between any two test positioning points in each measurement. i is the test reference signal receiving power value between any two test positioning points in each measurement, and K is a related constant;

[0078] The error function is differentiated and then solved to obtain the value of the relevant constant.

[0079] In this embodiment, in order to determine the value of K, multiple measurements can be performed in an area where there is no building obstruction and the distance is known. Assume that n measurements are performed and the distance obtained in each measurement is d i (i=1,2,...,n), the corresponding RSRP value is RSRP i , then K is determined by least squares fitting.

[0080] First, an error function is established. The error function is constructed according to the test distance and the test reference signal receiving power value at each measurement. The error function is:

[0081]

[0082] Where, d i RSRP is the test distance between any two test positioning points in each measurement. i is the test reference signal receiving power value between any two test positioning points in each measurement, and K is a related constant.

[0083] Taking the derivative of E(K) and setting it equal to 0, we get:

[0084]

[0085] Solving this equation yields the following values:

[0086]

[0087] Where, d i RSRP is the test distance between any two test positioning points in each measurement. i is the test reference signal receiving power value between any two test positioning points in each measurement, K is the related constant, and n is the number of measurements.

[0088] S103: Obtain a first distance according to the coordinate position of the first positioning point and the coordinate position of the second positioning point, obtain a second distance according to the coordinate position of the second positioning point and the coordinate position of the third positioning point, and calculate according to the first distance, the second distance and the first estimated loss value to obtain a second estimated value of the third positioning point.

[0089] In this embodiment, according to the distance d from the B positioning point to the A positioning point BA , the distance d from the C positioning point to the B positioning point CB , and the calculated first estimated loss value, calculate the RSRP estimated value RSRP' that the C positioning point should obtain if it is not blocked by the building wall C .

[0090] In one embodiment, calculating according to the first distance, the second distance and the first estimated loss value to obtain a second estimated value of the third positioning point includes:

[0091] The total loss between the first positioning point and the third positioning point is calculated according to the first distance, the second distance and the first estimated loss value, wherein the calculation formula of the total loss is:

[0092]

[0093] Where L' C is the total loss, d BA is the first distance, d CB is the second distance, L BA is the first estimated loss value;

[0094] Based on the calculation formula for estimating signal loss, the second estimated value of the third positioning point is obtained by conversion according to the total loss, wherein the second estimated value is:

[0095] RSRP' C =20log 10 (d BA +d CB )+K-L' C

[0096] Where RSRP' C is the second estimated value, L' C is the total loss, d BAis the first distance, d CB is the second distance, and K is the correlation constant.

[0097] In this embodiment, according to the principle of similar triangles (in terms of the geometric relationship of signal propagation), it can be obtained that:

[0098]

[0099] Where L' C is the total loss, that is, the total signal loss from point C to point A if there is no building blocking, d BA is the first distance, d CB is the second distance, L BA is the first estimated loss value;

[0100] After conversion, we get:

[0101]

[0102] And because:

[0103] L' C =20log 10 (d BA +d CB )+K-RSRP' C

[0104] so:

[0105] RSRP' C =20log 10 (d BA +d CB )+K-L' C

[0106] Where RSRP' C is the second estimated value, L' C is the total loss, d BA is the first distance, d Cb is the second distance, and K is the correlation constant.

[0107] S104: A first difference is obtained based on the second estimated value and the estimated signal loss value inside the building, and a second difference is obtained based on the second estimated value and the estimated signal loss value outside the building. If the first difference is smaller than the second difference, it is determined that the third positioning point is indoors; if the first difference is greater than the second difference, it is determined that the third positioning point is outdoors.

[0108] In this embodiment, the measured loss RSRP values ​​inside and outside the building are obtained, that is, the estimated signal loss value RSRP inside the building in And the estimated signal loss value RSRP outside the building out .

[0109] Calculate the difference D between the second estimated value and the estimated signal loss value in the building in , the difference D between the second estimated value and the estimated signal loss value outside the building OUT , if D in <D out , then point C is determined to be indoors; otherwise, point C is determined to be outdoors.

[0110] In one embodiment, obtaining a first difference value according to the second estimated value and the estimated signal loss value in the building includes:

[0111] The absolute value of the difference between the second estimated value and the estimated signal loss value in the building is calculated to obtain a first difference, wherein the first difference is:

[0112] D in =|RSRP' C -RSRP in |

[0113] Where RSRP' C is the second estimated value, RSRP in Estimated signal loss value in the building, D in is the first difference.

[0114] In this embodiment, the absolute value of the estimated signal loss value in the building is subtracted from the second estimated value to obtain a first difference, wherein the first difference is:

[0115] D in =|RSRP' C -RSRP in |

[0116] Where RSRP' C is the second estimated value, RSRP in Estimated signal loss value in the building, D in is the first difference.

[0117] In one embodiment, obtaining a second difference value according to the second estimated value and the estimated signal loss value outside the building includes:

[0118] The absolute value of the difference between the second estimated value and the estimated signal loss value outside the building is calculated to obtain a second difference, wherein the second difference is:

[0119] D OUT =|RSRP' C -RSRP OUT |

[0120] Where RSRP' C is the second estimated value, RSRP OUT Estimated signal loss value in the building, D OUTis the second difference.

[0121] In this embodiment, the absolute value of the second estimated value minus the estimated signal loss value outside the building is calculated to obtain a second difference, wherein the second difference is:

[0122] D OUT =|RSRP' C -RSRP OUT |

[0123] Where RSRP' C is the second estimated value, RSRP OUT Estimated signal loss value in the building, D OUT is the second difference.

[0124] The 5G positioning position determination device for an indoor area provided by an embodiment of the present invention is as follows: Figure 3 As shown, Figure 3 A block diagram of a device for determining a 5G positioning position in an indoor area, including:

[0125] An acquisition module 301 is used to acquire the coordinate positions of a first positioning point, a second positioning point and a third positioning point within a preset radius of a base station;

[0126] The judging module 302 is used to judge whether there is a building within a preset distance between the first positioning point and the second positioning point. If there is no building, the estimated signal loss between the first positioning point and the second positioning point is calculated according to the reference signal receiving power value of the second positioning point received by the first positioning point to obtain a first estimated loss value;

[0127] A first calculation module 303 is used to obtain a first distance according to the coordinate position of the first positioning point and the coordinate position of the second positioning point, obtain a second distance according to the coordinate position of the second positioning point and the coordinate position of the third positioning point, and calculate according to the first distance, the second distance and the first estimated loss value to obtain a second estimated value of the third positioning point;

[0128] The second calculation module 304 is used to obtain a first difference based on the second estimated value and the estimated signal loss value inside the building, and to obtain a second difference based on the second estimated value and the estimated signal loss value outside the building. If the first difference is less than the second difference, it is determined that the third positioning point is indoors; if the first difference is greater than the second difference, it is determined that the third positioning point is outdoors.

[0129] In one embodiment, the determination module 302 includes an estimation unit 3021, wherein:

[0130] The estimation unit is used to calculate the estimated signal loss between the first positioning point and the second positioning point according to the reference signal reception power value and the related constant received by the second positioning point at the first positioning point, and obtain a first estimated loss value, wherein the calculation formula of the estimated signal loss is:

[0131] L BA =20log 10 (d BA )+K-RSRP BA

[0132] Where, L BA is the first estimated loss value, d BA is the distance between the first positioning point and the second positioning point, K is the correlation constant, RSRP BA A reference signal receiving power value of the first positioning point is received for the second positioning point.

[0133] The specific implementation of the 5G positioning position determination device for indoor areas is basically the same as the specific implementation of the 5G positioning position determination method for indoor areas mentioned above, and will not be repeated here.

[0134] In one embodiment of the present application, a computer device is provided, which includes a memory and a processor, wherein a computer program is stored in the memory, and the above steps are implemented when the processor executes the computer program; the computer device provided in this embodiment has an implementation principle and technical effects similar to those of the above method embodiments, and will not be repeated here.

[0135] In one embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored, and the above steps are implemented when the computer program is executed by a processor; the computer-readable storage medium provided in this embodiment has an implementation principle and technical effects similar to those of the above method embodiment, and will not be repeated here.

[0136] This method can accurately determine whether the positioning point is located indoors or outdoors when the 5GMR geometric positioning error is large (39 meters) through accurate signal loss calculation and inference based on geometric relationships. Compared with the existing technology, it overcomes the problem that relying solely on 5GMR (5G measurement report) geometric positioning cannot accurately determine indoors and outdoors, and improves the positioning accuracy.

[0137] This method does not require the installation of additional sensors, such as Bluetooth beacons, Wi-Fi access points, etc., which reduces the cost of equipment procurement, installation and maintenance. Compared with the technology that relies on sensors to assist in determining indoor and outdoor locations, it has obvious cost advantages and is particularly suitable for large-scale 5G network coverage areas.

[0138] This method is based on the signal characteristics (RSRP value) of the 5G network itself and the positioning point information of the base station sector. It is not limited by macro-geographic information judgment methods such as geo-fencing, and can be applied to various complex building structures and different base station layout scenarios. It can be applied as long as there is 5G network coverage and the relevant positioning point information and building floor plan information can be obtained. And because it does not rely on the interaction between the sensor and the mobile terminal, it avoids environmental interference problems that may exist in sensor technology, such as signal blocking and electromagnetic interference. This method is mainly based on the characteristics of the 5G network signal itself for calculation. In the case of complex electromagnetic environment and signal blocking, it can still perform relatively stable indoor and outdoor position judgment.

[0139] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0140] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for determining a 5G positioning position in an indoor area, characterized in that: include: Obtaining coordinate positions of a first positioning point, a second positioning point, and a third positioning point within a preset radius of the base station; Determine whether there is a building within a preset distance between the first positioning point and the second positioning point, and if there is no building, calculate the estimated signal loss between the first positioning point and the second positioning point according to the reference signal reception power value received by the second positioning point from the first positioning point, to obtain a first estimated loss value; A first distance is obtained according to the coordinate position of the first positioning point and the coordinate position of the second positioning point, a second distance is obtained according to the coordinate position of the second positioning point and the coordinate position of the third positioning point, and a second estimated value of the third positioning point is obtained by calculation according to the first distance, the second distance and the first estimated loss value; A first difference is obtained based on the second estimated value and the estimated signal loss value inside the building, and a second difference is obtained based on the second estimated value and the estimated signal loss value outside the building. If the first difference is smaller than the second difference, it is determined that the third positioning point is indoors; if the first difference is larger than the second difference, it is determined that the third positioning point is outdoors.

2. The method for determining a 5G positioning position in an indoor area according to claim 1, characterized in that: The calculating the estimated signal loss between the first positioning point and the second positioning point according to the reference signal reception power value of the first positioning point received by the second positioning point to obtain a first estimated loss value includes: According to the reference signal reception power value and the related constant received by the second positioning point at the first positioning point, the estimated signal loss between the first positioning point and the second positioning point is calculated to obtain a first estimated loss value, wherein the calculation formula of the estimated signal loss is: L BA =20log 10 (d BA )+K-RSRP BA Where, L BA is the first estimated loss value, d BA is the distance between the first positioning point and the second positioning point, K is the correlation constant, RSRP BA A reference signal receiving power value of the first positioning point is received by the second positioning point.

3. The method for determining the 5G positioning position in an indoor area according to claim 2, characterized in that: The value of the related constant is determined by performing multiple measurements on any two test positioning points in a preset area without buildings, including: In a preset area without buildings, multiple distance measurements and reference signal receiving power value measurements are performed on any two test positioning points to obtain the test distance and test reference signal receiving power value at each measurement; An error function is constructed according to the test distance and the test reference signal received power value during each measurement, wherein the error function is: Where, d i RSRP is the test distance between any two test positioning points in each measurement. i is the test reference signal receiving power value between any two test positioning points in each measurement, and K is a related constant; The error function is differentiated and then solved to obtain the value of the related constant.

4. The method for determining a 5G positioning position in an indoor area according to claim 1, characterized in that: The calculating according to the first distance, the second distance and the first estimated loss value to obtain the second estimated value of the third positioning point includes: The total loss between the first positioning point and the third positioning point is calculated according to the first distance, the second distance and the first estimated loss value, wherein the calculation formula of the total loss is: Where L' C is the total loss, d BA is the first distance, d CB is the second distance, L BA is the first estimated loss value; Based on the calculation formula of the estimated signal loss, the second estimated value of the third positioning point is obtained by conversion according to the total loss, wherein the second estimated value is: <h2 style=";text-align:left;direction:ltr">RSRP'<h2 style=";text-align:left;direction:ltr"> C <h2 style=";text-align:left;direction:ltr"> <20log<h2 style=";text-align:left;direction:ltr"> 10 <h2 style=";text-align:left;direction:ltr"> (d<h2 style=";text-align:left;direction:ltr"> BA <h2 style=";text-align:left;direction:ltr"> +d<h2 style=";text-align:left;direction:ltr"> CB <h2 style=";text-align:left;direction:ltr"> )+K-L'<h2 style=";text-align:left;direction:ltr"> C Where RSRP' C is the second estimated value, L' C is the total loss, d BA is the first distance, d CB is the second distance, and K is a related constant.

5. The method for determining the 5G positioning position in an indoor area according to claim 1, characterized in that: The obtaining a first difference value according to the second estimated value and the estimated signal loss value in the building comprises: The absolute value of the difference between the second estimated value and the estimated signal loss value in the building is calculated to obtain a first difference, wherein the first difference is: D in =|RSRP’ c -RSRP in | Where RSRP' C is the second estimated value, RSRP in Estimated signal loss value in the building, D in is the first difference.

6. The method for determining the 5G positioning position in an indoor area according to claim 1, characterized in that: The step of obtaining a second difference value according to the second estimated value and the estimated signal loss value outside the building comprises: The absolute value of the difference between the second estimated value and the estimated signal loss value outside the building is calculated to obtain a second difference, wherein the second difference is: D OUT =|RSRP’ C -RSRP OUT | Where RSRP' C is the second estimated value, RSRP OUT Estimated signal loss value in the building, D OUT is the second difference.

7. A 5G positioning position determination device for indoor areas, characterized in that: include: An acquisition module, used to acquire the coordinate positions of a first positioning point, a second positioning point and a third positioning point within a preset radius of the base station; a judgment module, configured to judge whether there is a building within a preset distance between the first positioning point and the second positioning point, and if there is no building, calculate the estimated signal loss between the first positioning point and the second positioning point according to the reference signal reception power value received by the second positioning point from the first positioning point, to obtain a first estimated loss value; a first calculation module, configured to obtain a first distance according to a coordinate position of the first positioning point and a coordinate position of the second positioning point, obtain a second distance according to a coordinate position of the second positioning point and a coordinate position of the third positioning point, and obtain a second estimated value of the third positioning point by performing calculation according to the first distance, the second distance and the first estimated loss value; The second calculation module is used to obtain a first difference based on the second estimated value and the estimated signal loss value in the building, and to obtain a second difference based on the second estimated value and the estimated signal loss value outside the building. If the first difference is less than the second difference, it is determined that the third positioning point is indoors; if the first difference is greater than the second difference, it is determined that the third positioning point is outdoors.

8. The 5G positioning position determination device for indoor areas according to claim 7, characterized in that: The judgment module includes an estimation unit, wherein: The estimation unit is used to calculate the estimated signal loss between the first positioning point and the second positioning point according to the reference signal reception power value of the first positioning point received by the second positioning point and the related constant, so as to obtain a first estimated loss value, wherein the calculation formula of the estimated signal loss is: L BA =20log 10 (d BA )+K-RSRP BA Where, L BA is the first estimated loss value, d BA is the distance between the first positioning point and the second positioning point, K is the correlation constant, RSRP BA A reference signal receiving power value of the first positioning point is received by the second positioning point.

9. A computer device, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the steps of the method for determining a 5G positioning position in an indoor area as described in any one of claims 1 to 6 when executing the computer program.

10. A storage medium, characterized in that: The storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for determining a 5G positioning position in an indoor area as described in any one of claims 1 to 6.

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