WO2017219464A1

WO2017219464A1 - Method and apparatus for positioning terminal

Info

Publication number: WO2017219464A1
Application number: PCT/CN2016/094958
Authority: WO
Inventors: 文园
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-06-21
Filing date: 2016-08-12
Publication date: 2017-12-28
Also published as: CN107526057A

Abstract

A method for positioning a terminal, comprising: when signal transmission is performed between a plurality of positioning antennas and a terminal to be positioned, acquiring a changing value of the intensity of signals received by receiving terminals, wherein the receiving terminals are the plurality of positioning antennas or the terminal to be positioned; determining, according to the changing value of the signal intensity, respective azimuthal angles between the plurality of positioning antennas and the terminal to be positioned; and determining, according to the respective azimuthal angles between the plurality of positioning antennas and the terminal to be positioned and the distance between the plurality of positioning antennas, the position where the terminal to be positioned is located.

Description

Method and device for positioning terminal

Technical field

The present application relates to, but is not limited to, the field of communications, and in particular, to a method and apparatus for locating a terminal.

Background technique

In the related art, the manner of the terminal generally uses the transmission time, the transmission time difference, the signal attenuation degree, and the like to calculate the distance between the target terminal and the positioning antenna. However, the indoor positioning distance is short, and the transmission distance is used to calculate the target distance. Taking the distance of 100 meters as an example, the electromagnetic wave transmission needs only 3.33e-7s for 100 meters, and the conventional clock precision is difficult to achieve. Moreover, the indoor positioning environment is complicated, and the degree of signal attenuation is seriously affected by the environment, and the distance cannot be accurately estimated according to the attenuation amount. As well as the efficiency of the tested terminal system has a great influence on the degree of attenuation, but the difference between the measured terminals is large, and the actual spatial attenuation cannot be accurately estimated. For example, the ultrasonic positioning method is greatly affected by temperature and can only be positioned within the visible range. The geomagnetic positioning method needs to measure the geomagnetism of all the positioning points in the entire positioning space, and the pre-distribution network has a large workload.

In view of the problem that the positioning accuracy is not high or the workload is large when positioning the indoor terminal in the related art, there is no effective solution at present.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The method and device for locating a terminal are provided to solve at least the problem that the positioning accuracy is not high or the workload is large when positioning the indoor terminal in the related art.

An embodiment of the present invention provides a method for locating a terminal, including:

Obtaining a change value of a signal strength received by the receiving end when the signal is transmitted between the plurality of positioning antennas and the terminal to be located, wherein the receiving end is the plurality of positioning antennas or the to-be-positioned terminal;

Determining, according to the change value of the signal strength, an azimuth angle of the plurality of positioning antennas and the terminal to be located respectively;

Determining, according to the azimuth angle of the plurality of positioning antennas and the distance of the to-be-positioned terminal and the distance between the plurality of positioning antennas, the position of the to-be-positioned terminal.

Optionally, the obtaining the change value of the signal strength received by the receiving end includes:

Triggering the plurality of positioning antennas to continuously rotate from a preset time point at a preset speed;

Obtaining a signal strength change value received by the receiving end of the plurality of positioning antennas during each one rotation.

Optionally, determining, according to the change value of the signal strength, the azimuth of the plurality of positioning antennas and the terminal to be located respectively includes:

Determining, from the received signal strength change value, a plurality of time points at which the receiving end receives the strongest signal;

And determining, according to the multiple time points and the rotation speeds of the plurality of positioning antennas, azimuth angles of the plurality of positioning antennas with respect to the terminal to be positioned.

Optionally, at least one of the connections between the plurality of positioning antennas does not pass through the terminal to be located.

Optionally, when the receiving end is the terminal to be located, the transmitting end is the positioning antenna; or, when the receiving end is the positioning antenna, the transmitting end is the to-be-positioned terminal.

Optionally, the plurality of positioning antennas are rotating directional antennas, or phased array antennas that can implement antenna pattern rotation.

The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the method for locating the terminal when the computer executable instructions are executed.

An embodiment of the present invention further provides an apparatus for locating a terminal, including:

The first acquiring module is configured to: when a signal is transmitted between the plurality of positioning antennas and the terminal to be located, obtain a change value of the signal strength received by the receiving end, where the receiving end is the plurality of positioning antennas Or the terminal to be located;

The first determining module is configured to: determine, according to the change value of the signal strength, an azimuth angle of the plurality of positioning antennas and the terminal to be located respectively;

a second computing module, configured to: separately locate the terminal to be located according to the plurality of positioning antennas The azimuth angle and the distance between the plurality of positioning antennas determine a position at which the terminal to be positioned is located.

Optionally, the first obtaining module includes:

a triggering unit, configured to: trigger the plurality of positioning antennas to continuously rotate from a preset time point at a preset speed;

And an acquiring unit, configured to: obtain a signal strength change value received by the receiving end of the plurality of positioning antennas during each rotation.

Optionally, the first determining module includes:

a first determining unit, configured to: determine, from the received signal strength change value, a plurality of time points at which the receiving end receives the strongest signal;

The second determining unit is configured to determine, according to the multiple time points and the rotational speeds of the plurality of positioning antennas, azimuth angles of the plurality of positioning antennas with respect to the terminal to be located.

In the embodiment of the present invention, a signal is transmitted and received between a plurality of positioning antennas and a terminal to be located, and then a change value of a signal strength received by the receiving end is obtained. The receiving end may be a positioning antenna or may be determined. a bit terminal; and calculating an azimuth angle of each positioning antenna and the terminal to be located according to a change value of the signal strength, thereby obtaining a plurality of azimuth angles between the plurality of positioning antennas and the terminal to be positioned and a distance between the plurality of positioning antennas The manner in which the location of the terminal to be located is calculated is calculated; the problem that the positioning accuracy is not high or the workload is large when positioning the indoor terminal in the related art is solved.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a flowchart of a method of locating a terminal according to an embodiment of the present invention;

2 is a structural block diagram of an apparatus for locating a terminal according to an embodiment of the present invention;

3 is a block diagram showing an alternative structure of an apparatus for locating a terminal according to an embodiment of the present invention;

4 is a block diagram showing an alternative structure of an apparatus for locating a terminal according to an embodiment of the present invention;

5 is a schematic diagram of indoor positioning of two directional antennas according to an alternative embodiment of the present invention;

6 is a flow chart of a method for indoor positioning of two directional antennas according to an alternative embodiment of the present invention;

7 is a schematic diagram of indoor positioning using three directional antennas according to an optional embodiment of the present invention;

8 is a flow chart of a manner of indoor positioning using three directional antennas according to an alternative embodiment of the present invention;

9 is a schematic diagram of indoor positioning using three directional antennas in accordance with an alternative embodiment of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the various manners in the embodiments may be combined with each other without conflict.

It should be noted that the terms "first", "second" and the like are used herein to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a method for locating a terminal is provided. FIG. 1 is a flowchart of a method for locating a terminal according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:

Step S102: Obtain a change value of a signal strength received by the receiving end when the signal is transmitted between the plurality of positioning antennas and the terminal to be located, where the receiving end is a plurality of positioning antennas or terminals to be located;

Step S104: Determine an azimuth angle of the plurality of positioning antennas and the terminal to be located according to the change value of the signal strength;

Step S106: Determine the location of the terminal to be located according to the azimuth angle of the plurality of positioning antennas and the distance between the plurality of positioning antennas.

It can be seen from step S102 to step S106 of the embodiment that when the terminal needs to be located, The signal is sent and received between the plurality of positioning antennas and the terminal to be located, and then the change value of the signal strength received by the receiving end is obtained. The receiving end at this time may be a positioning antenna or a terminal to be located; and according to the signal strength The change value calculates the azimuth of each positioning antenna and the terminal to be located, thereby calculating the position of the terminal to be located according to the multiple azimuth angles between the plurality of positioning antennas and the terminal to be positioned and the distance between the plurality of positioning antennas The position in the embodiment adopts a plurality of positioning antennas and azimuth angles of the terminals to locate the position of the terminal, the network structure of the positioning is simple, the environment is less affected, and the positioning accuracy is high, and the related technology is solved in the indoor The problem that the positioning accuracy is not high or the workload is large when the terminal performs positioning.

In this embodiment, the phased array antenna can be used to achieve antenna pattern rotation.

In this embodiment, the plurality of positioning antennas may be rotating directional antennas, or may be phased array antennas that can implement antenna pattern rotation.

It can be noted that, in this embodiment, when the receiving end is the terminal to be located, the transmitting end is the positioning antenna; or when the receiving end is the positioning antenna, the transmitting end is the terminal to be located.

For the manner of obtaining the change value of the signal strength received by the receiving end in the step S102 in this embodiment, in the optional implementation manner of the embodiment, the following can be implemented:

Step S102-1: triggering a plurality of positioning antennas to continuously rotate from a preset time point at a preset rotation speed;

Step S102-2: Acquire a signal strength change value received by the receiving end of the plurality of positioning antennas during each rotation.

For the preset time points involved in the above step S102-1, the plurality of positioning antennas may be rotated from the same predetermined time point for subsequent unified calculation, or may be different time points, but the calculation principle is the same. Both refer to the previous time point; in addition, for the positioning antenna speed, it can be preset or the default value of the positioning antenna can be used.

For the manner of determining the azimuth of the plurality of positioning antennas and the terminal to be located according to the change value of the signal strength in the step S104 of the embodiment, in an optional implementation manner of the embodiment, the following manner may be adopted. achieve:

Step S104-1, determining, from the received signal strength change value, a plurality of time points at which the receiving end receives the strongest signal;

Step S104-2, determining a plurality of positioning antennas according to the plurality of time points and the rotational speeds of the plurality of positioning antennas Azimuth angles relative to the terminal to be located, respectively.

Optionally, in the foregoing steps S104-1 and S104-2, when the maximum direction of the positioning antenna pattern is directed to the positioning terminal, the signal strength of the receiving end received by the receiving end is the strongest.

For the solution involved in the foregoing embodiment, at least one of the connection lines between the plurality of positioning antennas in the embodiment does not pass the terminal to be located. It can also be said that the terminal to be located is not connected to all the positioning antennas.

When the terminal to be located is in the connection between the plurality of positioning antennas, the method for positioning the terminal in this embodiment may include:

Step S108: Acquire a plurality of positioning antennas to receive signal strength between each other;

Step S109: Calculate path attenuation according to the obtained signal strength;

Step S110: Calculate the distance between the to-be-positioned terminals and the positioning antennas at both ends of the connection line on the connection line according to the path attenuation.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium (such as ROM/RAM, disk). The optical disc includes a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of the embodiment of the present invention.

In this embodiment, a device for locating a terminal is provided, and the device is configured to implement the foregoing embodiments and optional embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the devices described in the following embodiments are optionally implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 2 is a structural block diagram of an apparatus for locating a terminal according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes:

The first obtaining module 22 is configured to: when performing signal transmission between the plurality of positioning antennas and the terminal to be located, obtain a change value of the signal strength received by the receiving end, where the receiving end is a plurality of positioning antennas or to be located terminal;

The first determining module 24 is connected to the first acquiring module 22, and is configured to: determine, according to a change value of the signal strength, an azimuth angle of the plurality of positioning antennas and the terminal to be located respectively;

The second determining module 26 is connected to the first determining module 24, and is configured to determine the location of the terminal to be located according to the azimuth angle of the plurality of positioning antennas and the distance between the plurality of positioning antennas.

FIG. 3 is a block diagram of an optional structure of an apparatus for locating a terminal according to an embodiment of the present invention. As shown in FIG. 3, the first acquiring module 22 may include:

The triggering unit 32 is configured to: trigger a plurality of positioning antennas to continuously rotate from a preset time point at a preset speed;

The obtaining unit 34 is connected to the trigger unit 32 and configured to acquire a signal strength change value received by the receiving end of the plurality of positioning antennas during each rotation.

FIG. 4 is a block diagram showing an optional structure of an apparatus for locating a terminal according to an embodiment of the present invention. As shown in FIG. 4, the first determining module 24 may include:

The first determining unit 42 is configured to: determine, from the received signal strength change value, a plurality of time points at which the receiving end receives the strongest signal;

The second determining unit 44 is connected to the first determining unit 42 and configured to determine the azimuth angles of the plurality of positioning antennas with respect to the terminal to be located according to the plurality of time points and the rotational speeds of the plurality of positioning antennas.

Optionally, at least one of the connection lines between the plurality of positioning antennas involved in the embodiment of the apparatus does not pass the terminal to be located. It can also be said that the terminal to be located is not connected to all the positioning antennas.

It can be noted that, in the embodiment, when the receiving end is the terminal to be located, the transmitting end is the positioning antenna; or when the receiving end is the positioning antenna, the transmitting end is the terminal to be located.

In another embodiment of the present embodiment, when the terminal to be located is on all the connections between the plurality of positioning antennas, the device in this embodiment may include:

a second acquiring module, configured to: acquire signal strengths that are received by the plurality of positioning antennas;

a third determining module, configured to: determine a path attenuation according to the obtained signal strength;

The third determining module is configured to: determine, according to the path attenuation, a distance between the to-be-positioned terminal and the positioning antenna at both ends of the connection on the connecting line.

In addition, the embodiment further provides a system for locating a terminal, and the system includes any one of the foregoing device embodiments and a plurality of positioning antennas involved in the embodiment.

It can be noted that the foregoing modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are respectively located in multiple processes. In the device.

Optionally, for the multiple positioning antennas involved in this embodiment, there are two or more, and the following two embodiments take the positioning antennas as two and three, respectively, and the optional implementation of the embodiment of the present invention is described in detail. Example implementation;

In this embodiment, the positioning system (the system corresponding to the positioning terminal in the above embodiment) and the positioning terminal (corresponding to the terminal to be located in the above embodiment) may be involved, wherein the positioning system may include two or two More than one positioning antenna, as well as a data processing system.

It can be noted that, in the optional embodiment, the positioning antenna is optionally a directional antenna in an optional application scenario, and the positioning position of the positioning antenna is known; the maximum direction of the positioning antenna pattern can be rotated along an axis perpendicular to the horizontal plane. And the positioning antenna pattern speed is known; the positioning antenna position and speed data can be stored in the data processing system.

In addition, in the optional embodiment, the positioning system may be a transmitting end or a receiving end. When the positioning system is the transmitting end, the positioning terminal can be the receiving end. When the positioning system is the receiving end, the positioning terminal may be a transmitting end.

During the rotation of the positioning antenna pattern, when the maximum direction of the positioning antenna pattern is directed to the positioning terminal, the signal strength of the receiving end receiving the transmitting end is the strongest. Therefore, after receiving the signal strength from the positioning antenna, the receiving end can feed back the received signal strength to the data processing system.

During the positioning process, all the positioning antenna patterns can be rotated one time respectively, and the data processing system can calculate the antenna receiving signal corresponding to each positioning antenna according to the signal intensity curve of each positioning antenna received by the receiving end returned by the receiving end. The strongest time point.

The data processing system can be based on each time point and positioning antenna speed, which is determined at each time point. The orientation of the antenna, that is, the direction angle at which the antenna is positioned to the positioning terminal. Then, the data processing system can accurately calculate the location of the positioning terminal according to the positioning antenna position, the spacing, and the measured direction angle.

The present exemplary embodiment will be described below by means of two directional antennas for indoor positioning. FIG. 5 is a schematic diagram of two positioning antennas (positioning antennas 1, 2, all of which are directional antennas) for indoor positioning according to an alternative embodiment of the present invention. As shown in FIG. 5, a positioning antenna can be used as a transmitting end, and a positioning terminal is used. As the receiving end. The positioning antenna can rotate about an axis perpendicular to the horizontal plane at its own position, and the antenna pattern of the positioning antenna can rotate with the rotation of the positioning antenna. In addition, in the optional embodiment, the Bluetooth band can be used for communication, for example, using a mobile phone terminal as a positioning terminal, and no additional hardware device is needed.

FIG. 6 is a flowchart of a method for indoor positioning of two directional antennas according to an alternative embodiment of the present invention. As shown in FIG. 6, the steps of the method include:

Step S602: setting the position of the positioning antenna 1, 2;

Step S604: setting the positioning antenna 1, 2 rotation speed;

Step S606: The positioning terminal reports the signal strength of the received positioning antennas 1, 2 to the data processing system in real time;

Step S608: The data processing system calculates a time point at which the positioning terminal respectively receives the maximum radiated power of the positioning antenna 1, 2;

Step S610: The data processing system calculates the azimuth angles 1, 2 of the positioning terminals to the positioning antennas 1, 2 respectively;

Step S612: The data processing system calculates the distance from the positioning terminal to the positioning antenna, and obtains the precise position information of the positioning terminal.

The foregoing steps S602 and S604 may be performed or completed before the positioning terminal accesses the positioning system.

In step S606, the positioning terminal can receive the Bluetooth signal transmitted by the positioning antennas 1, 2 through the built-in Bluetooth antenna, and can report the signal strength information to the data processing system in real time.

In the above step S608, the data processing system can calculate the time points t1 and t2 when the positioning terminal receives the strongest signals of the positioning antennas 1, 2 according to the signal strength information returned by the positioning terminal and the positioning antenna pattern.

When the positioning terminal is not located on the positioning antenna connection line: in step S610, the data processing system can calculate the orientation corresponding to the maximum radiation direction of the positioning antenna pattern at the time point t1, t2 according to the time point t1, t2, that is, Positioning the terminal to the azimuth of the positioning antennas 1, 2.

In the above step S612, the data processing system can calculate the actual position of the positioning terminal according to the position and azimuth angles 1, 2 of the positioning antennas 1, 2.

In order to avoid the situation that the positioning terminal is located on the positioning antenna connection line, the positioning antenna can be placed at both ends of the obstacle.

It can be noted that when the positioning terminal is located on the positioning antenna connection line, the signal strengths of the two positioning antennas can be received according to the two positioning antennas, and the path attenuation is calculated, thereby calculating the distance between the positioning terminals and the two positioning antennas on the connecting line.

Alternatively, when the positioning terminal is located on the positioning antenna connection line, the positioning terminal may prompt the user to move slightly, so that the positioning terminal leaves the connection line, thereby repositioning the positioning terminal.

FIG. 7 is a schematic diagram of indoor positioning by using three positioning antennas (positioning antennas 1, 2, 3, all of which are directional antennas) according to an optional embodiment of the present invention. As shown in FIG. 7, a positioning antenna can be used as a transmission. End, the positioning terminal serves as the receiving end. The positioning antenna is rotatable about an axis perpendicular to the horizontal plane at its location. The antenna pattern of the positioning antenna can be rotated as the positioning antenna rotates. In addition, in the alternative embodiment, the Bluetooth band can be used for communication, for example, using a mobile terminal as a positioning terminal, and no additional hardware devices need to be added.

FIG. 8 is a flowchart of a manner of performing indoor positioning by using three directional antennas according to an alternative embodiment of the present invention. As shown in FIG. 8, the steps of the method include:

Step S802: setting a position of the positioning antenna 1, 2, 3;

Step S804: setting the rotation speed of the positioning antenna 1, 2, 3;

Step S806: The positioning terminal reports the received signal strength of the positioning antennas 1, 2, 3 to the data processing system in real time;

Step S808: The data processing system calculates a time point at which the positioning terminal respectively receives the maximum radiated power of the positioning antennas 1, 2, and 3;

Step S810: The data processing system calculates the azimuth angles 1, 2, 3 of the positioning antennas to the positioning antennas 1, 2, 3 respectively;

Step S812: The data processing system calculates the distance from the positioning terminal to the positioning antenna, and obtains the precise position information of the positioning terminal.

The foregoing steps S802 and S804 may be performed or completed before the positioning terminal accesses the positioning system.

In step S806, the positioning terminal can receive the Bluetooth signal transmitted by the positioning antennas 1, 2, and 3 through the built-in Bluetooth antenna, and can report the signal strength information to the data processing system in real time.

In the above step S808, the data processing system can calculate the time points t1, t2, and t3 when the positioning terminal receives the strongest signals of the positioning antennas 1, 2, and 3 respectively according to the signal strength information returned by the positioning terminal and the positioning antenna pattern. .

When the positioning terminal is not located on the positioning antenna connection line: in step S810, the data processing system can calculate the maximum radiation direction of the positioning antenna pattern at the time points t1, t2, and t3 according to the time points t1, t2, and t3. The orientation of the positioning terminal to the positioning antennas 1, 2, 3.

In the above step S812, the data processing system can calculate the actual position of the positioning terminal according to the position and azimuth angles 1, 2, and 3 of the positioning antennas 1, 2, and 3.

In an alternative application scenario, FIG. 9 is a schematic diagram of indoor positioning using three directional antennas according to an alternative embodiment of the present invention. As shown in FIG. 9, positioning antennas 1, 2, and 3 are located at p1, p2, respectively. At the p3 position, the positioning antenna rotation angular velocity is a, and the period in which the positioning antenna rotates one revolution is T=2π/a.

The user can turn on the indoor positioning function of the mobile phone. Use your phone to scan the Bluetooth signal of the positioning antenna and shake hands. The mobile phone can detect the signal strength of the positioning antennas 1, 2, 3. The detected signal strengths of the positioning antennas 1, 2, and 3 can be reported to the data processing system in real time through Bluetooth. After the time T, the three positioning antennas can be rotated for one week. The data processing system can calculate the azimuth angles θ1, θ2, θ3 of the three positioning antennas to the positioning terminal respectively according to the signal strength data reported by the mobile phone. Combining the respective positions p1, p2, and p3 of the three positioning antennas, the relative positions of the mobile phones and the three positioning antennas are calculated, that is, the precise position of the positioning terminal is obtained.

It can be noted that, for a system with three positioning antennas, it is usually only necessary to use two positioning antenna position and direction angle information to determine the positioning terminal position. When the three positioning antennas are not on the same line, there is no case where the positioning terminal is located on the line connecting all the positioning antennas. Only three When the positioning antennas are all on the same line, it may happen that the positioning terminal is located on the line connecting all the positioning antennas. At this time, the signal strengths of the two positioning antennas can be received according to the three positioning antennas, and the path attenuation is calculated, thereby calculating the positioning terminal. The distance from the three positioning antennas on the line.

It can be noted that the phased array antenna can be used to implement the antenna pattern rotation in the present alternative embodiment. It is also possible to use the positioning antenna end as the receiving end and the positioning terminal as the transmitting end. The Bluetooth signal strength of the mobile phone received by each positioning antenna is detected on the positioning antenna side. When the positioning antenna is used as the transmitting end, the coverage area of the positioning system can be increased by increasing the transmitting power of the transmitting antenna. It is also possible to increase the coverage area of the positioning system by increasing the number of positioning antennas. In addition, it is also possible to increase the positioning system coverage area by using other frequencies for communication.

Through the mode of the optional embodiment, the network coverage is wide, the network structure is simple, the environment is less affected, the positioning precision is high, and the positioning terminal at any position can also be located;

The embodiment of the invention further provides a storage medium. Optionally, in this embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

Step S1: Obtaining a change value of the signal strength received by the receiving end when the signal is transmitted between the plurality of positioning antennas and the terminal to be located, wherein the receiving end is a plurality of positioning antennas or terminals to be located;

Step S2: determining an azimuth angle of the plurality of positioning antennas and the terminal to be located according to the change value of the signal strength;

Step S3: determining the location of the terminal to be located according to the azimuth of the plurality of positioning antennas and the distance between the plurality of positioning antennas.

For example, the examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, processor, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit, and the steps may be separately fabricated into integrated circuit modules, or multiple modules thereof or The steps are made into a single integrated circuit module.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

A person skilled in the art can understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application. The scope of protection of this application is defined by the scope defined by the claims.

Industrial applicability

Claims

A method for locating a terminal, comprising:

Obtaining a change value of a signal strength received by the receiving end when the signal is transmitted between the plurality of positioning antennas and the terminal to be located, wherein the receiving end is the plurality of positioning antennas or the to-be-positioned terminal;

Determining, according to the change value of the signal strength, an azimuth angle of the plurality of positioning antennas and the terminal to be located respectively;

Determining, according to the azimuth angle of the plurality of positioning antennas and the distance of the to-be-positioned terminal and the distance between the plurality of positioning antennas, the position of the to-be-positioned terminal.
The method according to claim 1, wherein the obtaining a change value of the signal strength received by the receiving end comprises:

Triggering the plurality of positioning antennas to continuously rotate from a preset time point at a preset speed;

Obtaining a signal strength change value received by the receiving end of the plurality of positioning antennas during each one rotation.
The method according to claim 2, wherein determining the azimuth of each of the plurality of positioning antennas and the terminal to be located according to the change value of the signal strength comprises:

Determining, from the received signal strength change value, a plurality of time points at which the receiving end receives the strongest signal;

And determining, according to the multiple time points and the rotation speeds of the plurality of positioning antennas, azimuth angles of the plurality of positioning antennas with respect to the terminal to be positioned.
The method according to claim 1, wherein at least one of the connections between the plurality of positioning antennas does not pass through the terminal to be located.
The method according to claim 1, wherein when the receiving end is the terminal to be located, the transmitting end is the positioning antenna; or when the receiving end is the positioning antenna, the transmitting end For the terminal to be located.
The method of claim 1 wherein the plurality of positioning antennas are rotating directional antennas or phased array antennas that enable antenna pattern rotation.
A device for locating a terminal, comprising:

The first acquiring module is configured to: when a signal is transmitted between the plurality of positioning antennas and the terminal to be located, obtain a change value of the signal strength received by the receiving end, where the receiving end is the plurality of positioning antennas Or the terminal to be located;

The first determining module is configured to: determine, according to the change value of the signal strength, an azimuth angle of the plurality of positioning antennas and the terminal to be located respectively;

The second determining module is configured to determine a location where the to-be-positioned terminal is located according to an azimuth angle of the plurality of positioning antennas and the distance between the plurality of positioning antennas.
The apparatus of claim 7, wherein the first obtaining module comprises:

a triggering unit, configured to: trigger the plurality of positioning antennas to continuously rotate from a preset time point at a preset speed;

And an acquiring unit, configured to: obtain a signal strength change value received by the receiving end of the plurality of positioning antennas during each rotation.
The apparatus of claim 8, wherein the first determining module comprises:

a first determining unit, configured to: determine, from the received signal strength change value, a plurality of time points at which the receiving end receives the strongest signal;

The second determining unit is configured to determine, according to the multiple time points and the rotational speeds of the plurality of positioning antennas, azimuth angles of the plurality of positioning antennas with respect to the terminal to be located.
The apparatus according to claim 7, wherein at least one of the connections between the plurality of positioning antennas does not pass through the terminal to be located.
The device according to claim 7, wherein when the receiving end is the terminal to be located, the transmitting end is the positioning antenna; or when the receiving end is the positioning antenna, the transmitting end For the terminal to be located.