WO2023131192A1 - Location method and apparatus, base station, location server, and readable storage medium - Google Patents

Abstract

Provided in the present application are a location method and apparatus, a base station, a location server, and a readable storage medium. The method comprises: receiving a location information request sent by a location server; configuring a reference signal according to auxiliary information for location in the location information request, after the configuration of the reference signal is completed, sending corresponding location configuration information to a terminal, and sending a location information configuration completion response to the location server, wherein the location configuration information is used for assisting the terminal to send the reference signal to a base station, and the location information configuration completion response is used for assisting the location server to complete location; and receiving the reference signal sent by the terminal, and sending to the location server the time difference of arrival of receiving the reference signal by a preset number of pairs of ports on the base station, wherein the time difference of arrival is used for assisting the location server to locate the terminal. By means of the embodiments of the present application, a new antenna measurement amount, i.e. the time difference of arrival of receiving a reference signal by a preset number of pairs of ports, is defined, such that a location server performs locating, and the location precision of a single base station can be improved.

Description

Positioning method, device, base station, positioning server and readable storage medium

Cross References to Related Applications

This application is based on a Chinese patent application with application number 202210004872.X and a filing date of January 5, 2022, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The embodiments of the present application relate to the field of wireless communication technologies, and in particular, to a positioning method, device, base station, positioning server, and readable storage medium.

Background technique

In the existing positioning methods, in order to ensure the positioning accuracy, positioning is generally performed through multiple base stations. The multi-base station positioning scheme includes: measuring the time difference between the arrival time of the received positioning reference signal and the arrival time of the reference base station, and then obtaining the distance difference , draw a hyperbola with the reference base station and any other base station as the focal point and the distance difference as the parameter, and the intersection point of the hyperbola is the terminal position. However, this way of using multiple base stations for positioning requires each base station to maintain time synchronization, and the synchronization of each base station is prone to time errors due to time synchronization, thereby affecting the accuracy of positioning.

Contents of the invention

Embodiments of the present application provide a positioning method, device, base station, positioning server, and readable storage medium, aiming at improving positioning accuracy.

In order to solve the above problems, the application is implemented as follows:

In the first aspect, the embodiment of the present application provides a positioning method, which is performed by a base station, and the method includes:

Receive the positioning information request sent by the positioning server;

Configuring a reference signal according to the auxiliary information used for positioning in the positioning information request, and after the configuration of the reference signal is completed, sending corresponding positioning configuration information to the terminal, and sending a positioning information configuration completion response to the positioning server, The positioning configuration information is used to assist the terminal to send the reference signal to the base station, and the positioning information configuration completion response is used to assist the positioning server to complete positioning;

receiving the reference signal sent by the terminal, and sending the time difference of arrival of the reference signal received by a preset number of ports on the base station to the positioning server, and the time difference of arrival is used to assist the positioning server to locate the terminal to locate.

In a second aspect, the embodiment of the present application provides a positioning method, which is executed by a positioning server, and the method includes:

Sending a positioning information request to the base station, where the auxiliary information used for positioning in the positioning information request is used for configuring reference signals by the base station;

receiving a positioning information configuration completion response sent by the base station;

receiving a preset number of time differences of arrival sent by the base station, and positioning the terminal according to the time difference of arrival, the time difference of arrival is received by the base station according to the preset number of ports on the base station and sent by the terminal The arrival time of the reference signal is calculated and obtained.

In a third aspect, the embodiment of the present application provides a positioning device, including:

The first receiving module is configured to receive the positioning information request sent by the positioning server and the reference signal sent by the terminal;

The configuration module is configured to configure a reference signal according to the auxiliary information used for positioning in the positioning information request, and after the configuration of the reference signal is completed, send corresponding configuration information to the terminal, and send positioning information to the positioning server A configuration completion response, the positioning configuration information is used to assist the terminal to send the reference signal to the base station, and the positioning information configuration completion response is used to assist the positioning server to complete positioning;

The first sending module is configured to send the time difference of arrival of a preset number of pairs of ports on the base station receiving the reference signal to the positioning server, where the time difference of arrival is used to assist the positioning server to locate the terminal.

In a fourth aspect, the embodiment of the present application further provides a positioning device, including:

The second sending module is configured to send a positioning information request to a base station, and the auxiliary information used for positioning in the positioning information request is used for configuring a reference signal by the base station;

The third receiving module is configured to receive a positioning information configuration completion response sent by the base station;

A positioning module configured to receive a preset number of time differences of arrival sent by the base station, and locate the terminal according to the time difference of arrival, the time difference of arrival is received by the base station according to a preset number of ports on the base station The arrival time of the reference signal sent by the terminal is calculated and obtained.

In the fifth aspect, the embodiment of the present application further provides a base station, including: a memory, a processor, and a program stored in the memory and executable on the processor, and the processor is configured to read the The program implements the steps in the positioning method described in the first aspect above.

In the sixth aspect, the embodiment of the present application also provides a positioning server, including: a memory, a processor, and a program stored on the memory and operable on the processor; the processor is configured to read the memory The program in implements the steps in the positioning method described in the aforementioned second aspect.

In this embodiment of the present application, by receiving the positioning information request sent by the positioning server; configuring a reference signal according to the auxiliary information used for positioning in the positioning information request, and sending the corresponding positioning configuration to the terminal after the configuration of the reference signal is completed information, sending a positioning information configuration completion response to the positioning server, the positioning configuration information is used to assist the terminal to send the reference signal to the base station, and the positioning information configuration completion response is used to assist the positioning server to complete positioning; receiving the The reference signal sent by the terminal, and the time difference of arrival of the preset number of ports on the base station receiving the reference signal is sent to the positioning server, and the time difference of arrival is used to assist the positioning server to locate the terminal . In this way, multiple ports are set in the same base station in this application, so there is no need to perform time synchronization on each port. After multiple ports receive the reference signal sent by the terminal, the base station can calculate and obtain a preset number of arrival time differences according to the time when each port receives the reference signal. Then the obtained time difference of arrival is sent to the positioning server, so that the positioning server can locate the terminal according to the preset number of time differences of arrival. In this application, because each port is set on the same base station, there is no need for time synchronization between the ports, and a new definition is defined. The measurement quantity: the reference signal arrival time difference avoids the time error caused by time synchronization and improves the positioning accuracy.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that need to be used in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of a network system applicable to an embodiment of the present application;

Fig. 2 is one of the schematic flowcharts of the positioning method provided by the embodiment of the present application;

Fig. 3 is one of the schematic diagrams of the configuration mode of the port on the base station of the embodiment of the present application;

Fig. 4 is the second schematic diagram of the setting method of the port on the base station of the embodiment of the present application;

Fig. 5 is the third schematic diagram of the setting method of the port on the base station of the embodiment of the present application;

FIG. 6 is the fourth schematic diagram of the setting method of ports on the base station of the embodiment of the present application;

FIG. 7 is the second schematic flow diagram of the positioning method provided by the embodiment of the present application;

Fig. 8 is one of the structural schematic diagrams of the positioning device provided by the embodiment of the present application;

Fig. 9 is the second structural schematic diagram of the positioning device provided by the embodiment of the present application;

FIG. 10 is a schematic structural diagram of a base station provided in an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a positioning server provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The terms "first", "second" and the like in the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus. In addition, the use of "and/or" in this application means at least one of the connected objects, such as A and/or B and/or C, means that A alone, B alone, C alone, and both A and B exist, Both B and C exist, both A and C exist, and there are 7 situations where A, B, and C all exist.

Please refer to FIG. 1 . FIG. 1 is a structural diagram of a network system applicable to the embodiment of the present application. As shown in FIG. 1 , it includes a terminal 11 , a positioning server 12 and a base station 13 .

Wherein, the terminal 11 and the base station 13 can communicate with each other, and the positioning server 12 and the base station 13 can communicate with each other.

In practical applications, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), a mobile Internet device (Mobile Internet Device, MID), Wearable device (Wearable Device) or vehicle equipment, etc. The positioning server 12 is used for positioning according to the signal sent by the base station 13 . Base station 13, that is, a public mobile communication base station, is an interface device for mobile devices to access the Internet, and is also a form of radio station. A radio transceiver station for information transfer.

The following describes the positioning method provided by the embodiment of the present application.

Referring to FIG. 2 , FIG. 2 is one of the schematic flowcharts of the positioning method provided by the embodiment of the present application. The positioning method shown in FIG. 2 can be performed by a base station.

As shown in Figure 2, the positioning method may include the following steps:

Step 201, receiving a positioning information request sent by a positioning server;

In the embodiment of the present application, multiple ports are set on the base station, and the multiple ports are set at different positions on the base station. First, configure each port on the base station, including configuring the identification of each port, and the physical location of each port or the physical location of a port (can be defined as a reference port), the relative positions of other ports relative to the reference port, and the information of the configured ports are collectively referred to as port parameters for convenience.

Further, for the accuracy of the result, the number of ports on the base station is at least three, so that two pairs of target ports can be selected from the three ports.

As an embodiment, the port parameters of the above-mentioned ports can be sent to each positioning server after the base station configuration is completed, and the positioning server can store the port parameters sent by the base station for subsequent use; as another embodiment, the port parameters of the above-mentioned ports The parameters can also be sent to the positioning server when needed. For example, the port parameters of the above ports can be sent to the positioning server during the positioning process.

During the positioning process, the positioning server sends a positioning information request to the base station, and the base station starts the positioning process according to the positioning information request sent by the positioning server. The positioning information request includes auxiliary information for positioning, and the specific auxiliary information is agreed with the base station for subsequent use. For positioning communication, for example, the auxiliary information may include frequency.

Step 202, configure a reference signal according to the auxiliary information used for positioning in the positioning information request, and after the configuration of the reference signal is completed, send the corresponding positioning configuration information to the terminal, and send the positioning information configuration to the positioning server A completion response, the positioning configuration information is used to assist the terminal to send the reference signal to the base station, and the positioning information configuration completion response is used to assist the positioning server to complete positioning;

After receiving the positioning information request sent by the positioning server, the base station configures the reference signal according to the auxiliary information in the positioning information request. The purpose of configuring the reference signal is to agree on what information to use for communication in the subsequent positioning process. For example, The base station can configure the corresponding communication frequency. Different terminals, positioning servers and base stations have different communication frequencies. Therefore, after the communication frequency is agreed, it is convenient for subsequent positioning communication.

After the base station configures the reference signal, it sends the corresponding configuration information to the terminal. The configuration information includes the reference signal configured by the base station. After receiving the configuration information sent by the base station, the terminal uses the corresponding configuration information in the subsequent positioning process. information (including reference signals) to communicate. After the base station sends the corresponding configuration information to the terminal, it sends the positioning configuration information completion response to the positioning server. The base station sends the positioning configuration information completion response to the positioning server. The server can initiate the next positioning process, that is, after receiving the positioning information sent by the base station, the positioning server can locate the terminal according to the positioning information. After receiving the positioning configuration information sent by the base station, the terminal sends a corresponding reference signal to the base station.

Step 203, receiving the reference signal sent by the terminal, and sending the time difference of arrival of the reference signal received by a preset number of ports on the base station to the positioning server, and the time difference of arrival is used to assist the positioning server to locate The terminal performs positioning.

As an embodiment, after each port on the base station receives the reference signal sent by the terminal, the base station acquires the time when each port receives the reference signal sent by the terminal.

As another embodiment, the positioning server may also send a corresponding positioning activation request to the base station. After the base station receives the positioning activation request sent by the positioning server and the reference signal sent by the terminal, the base station records the time when each port receives the reference information sent by the terminal. Time, and start the positioning function according to the activation request.

The base station obtains the time when each port receives the reference signal sent by the terminal, which is defined as the arrival time, and then calculates the arrival time of the reference signal at each port in pairs to obtain multiple arrival time differences, and then selects the preset number time difference of arrival, and send the preset number of time differences of arrival to the positioning server, and the positioning server calculates the position of the terminal according to the received preset number of time differences of arrival, so as to realize the positioning of the terminal. This application only needs one base station to realize terminal positioning. Compared with the existing multi-base station positioning method based on time difference of arrival, time synchronization between base stations is not required, and the influence of time synchronization error on positioning accuracy is avoided.

As an embodiment, the step of receiving the reference signal sent by the terminal, and sending the time difference of arrival of the preset number of ports on the base station receiving the reference signal to the positioning server includes:

Calculate the time difference of arrival of the reference signal received by every two ports, and select a preset number of time differences of arrival to send to the positioning server.

As an embodiment, the base station can select ports according to the required number of time differences of arrival, that is, according to the preset number of time differences of arrival, first select the required target port from each port. For example, if two time differences of arrival are required, then Choose 2 pairs of destination ports; if you need 3 arrival time differences, choose 3 pairs of ports. After the target port pair is selected, the arrival time difference of the target port pair can be corresponding. After the base station obtains the preset number of time differences of arrival, the base station sends the preset number of time differences of arrival to the positioning server.

As another embodiment, the base station may not select the target port first, and directly send all port parameters to the positioning server, and then the positioning server determines which pair of target ports it is based on the received arrival time difference, and then uses the received arrival time difference The time difference and target port parameters are used to calculate the position of the terminal.

As yet another embodiment, the base station can perform two-by-two calculations on the time of arrival of the reference signals received by each port, that is, calculate the time difference of arrival of the reference signals received by every two ports, and then sort the time differences of arrival from large to small, and then Calculate the preset number of arrival time differences with the largest difference according to the sorting and send them to the server. The preset time difference of arrival with the largest difference includes the largest time difference of arrival and the second largest time difference of arrival, and so on, to obtain the preset number of largest time difference of arrival.

As another embodiment, the base station can calculate the selection priority of every two ports according to the obtained arrival time and reference signal quality of each port received reference signal, and then sort the priorities from large to small, and then according to the sorted Calculate the preset number of arrival time differences with the highest priority and send them to the server.

Further, in order to improve the positioning accuracy, the preset number is greater than or equal to 2, that is, the base station acquires at least 2 time differences of arrival and sends them to the positioning server.

The positioning server receives a preset number of time differences of arrival sent by the base station, and the step of positioning the terminal according to the time difference of arrival includes:

Using the port coordinates of each pair of ports as the focal point and the time difference of arrival of the reference signals received by each pair of ports as the real axis length, a preset number of hyperbolas are obtained;

Calculate the intersection coordinates of a preset number of hyperbolas, and use the intersection coordinates as the coordinates of the terminal.

determining the number of initial positions of the terminal according to the coordinates of the intersection point;

If the number of initially determined positions of the terminal is greater than or equal to 2, the position of the terminal is determined according to the positive or negative of the arrival time difference of the reference signal received by the port.

If the number of initially determined positions of the terminal is still greater than or equal to 2 after the time difference of arrival is positive or negative, the position of the positioning terminal is further determined according to the initial access information of the terminal, and the initial access information includes the terminal access beam index.

Specifically, the number of time differences of arrival is 2 as an example for illustration. The positioning server takes the port coordinates of each pair of ports as the focus and the time difference of arrival of the reference signal received by each pair of ports as the length of the real axis, and obtains the corresponding two hyperbolas; calculate the intersection coordinates of the two hyperbolas, and use the intersection coordinates as the coordinates of the terminal. Specifically, the positioning server can obtain the position coordinates of the intersection point, that is, the position coordinates of the terminal, by using the hyperbola according to the two arrival time differences, and the positioning server calculates the position of the positioning terminal by the following formula:

|PF ₁|-|PF ₃|＝2cΔt1 ₃＝2a ₂，|F1F ₃|＝2c ₂，

Δt ₁₂为F ₁F ₂两个端口接收所述参考信号的到达时间差，Δt ₁₃为F ₁F ₃两个端口接收所述参考信号的到达时间差。 Among them, F ₁ F ₂ is a pair of target ports, F ₁ F ₃ is another pair of target ports, the coordinates of the position P of the positioning terminal are (x, y), |PF ₁ |-|PF ₂ |=2cΔt ₁₂ = 2a ₁ , |F ₁ F ₂ |=2c ₁ ,

|PF ₁ |-|PF ₃ |=2cΔt1 ₃ =2a ₂ , |F1F ₃ |=2c ₂ ,

Δt ₁₂ is the arrival time difference between the two ports F ₁ F ₂ receiving the reference signal, and Δt ₁₃ is the arrival time difference between the two ports F ₁ F ₃ receiving the reference signal.

If the number of intersection points is one after judging, then the intersection point is the target terminal position, otherwise, the target terminal position is further judged.

If the number of intersection points of the two hyperbolas is greater than or equal to 2, the relationship of the terminal position with respect to the coordinate axes _y1 and _y2 can be judged according to the positive or negative of the arrival time difference Δt ₁₂ and Δt ₁₃ . Exemplarily, if Δt ₁₂ ≥ 0, the terminal position is on the right side of the coordinate axis y ₁ , that is, the potential position of P is P ₁ or P ₂ ; if Δt ₁₂ < 0 and Δt ₁₃ ≥ 0, then the terminal position P is at Between the coordinate axes y ₁ and y ₂ ; if Δt ₁₂ <0 and Δt ₁₃ <0, then the terminal position P is on the left side of the coordinate axis y ₂ , that is, the potential position of P is P ₃ or P ₄ . Therefore, according to the positive or negative of the arrival time difference Δt ₁₂ and Δt ₁₃ , it is possible to determine the terminal position. If the location of the terminal cannot be determined according to the positive or negative of the time difference of arrival Δt ₁₂ and Δt ₁₃ , and the number of focal points is still greater than or equal to 2, the location of the terminal can be further determined according to the following steps: and physical broadcast channel block (Synchronization Signal and Physical Broadcast Channel block, SSB) or channel state information reference signal (Channel-State Information-Reference Signal, CSI-RS) Reference Signal Received Power (RSRP) or terminal The initial access information (the initial access information includes the terminal access beam index) determines the general direction of the target terminal, that is, determines whether the terminal is on the upper side or lower side of the coordinate axis x, so as to finally determine the intersection point, and then determine the coordinates of the intersection point.

If the number of arrival time differences is 3, then 3 hyperbolas will be obtained according to the above formula, and the location coordinates of the terminal are determined according to the intersection of the 3 hyperbolas.

It should be noted that ideally, the more hyperbolas there are, the fewer the number of intersection points, and the easier it is to determine the position of the terminal. However, in practical applications, due to various errors, the more hyperbolas there are, the more the number of intersections is still relatively large. Therefore, in this application, the position of the terminal is first determined according to the number of intersections of the hyperbolas. The time difference further determines the location of the terminal, and if it still cannot be determined according to the time difference of arrival, it is determined according to the initial access information. If the location of the terminal still cannot be determined at this time, considering the calculation cost, the positioning server will determine the location of the terminal according to the distribution of intersection points or initiate positioning again.

In this embodiment of the present application, by receiving the positioning information request sent by the positioning server; configuring a reference signal according to the auxiliary information used for positioning in the positioning information request, and sending the corresponding positioning configuration to the terminal after the configuration of the reference signal is completed information, sending a positioning information configuration completion response to the positioning server, the positioning configuration information is used to assist the terminal to send the reference signal to the base station, and the positioning information configuration completion response is used to assist the positioning server to complete positioning; receiving the The reference signal sent by the terminal, and the time difference of arrival of the preset number of ports on the base station receiving the reference signal is sent to the positioning server, and the time difference of arrival is used to assist the positioning server to locate the terminal . In this way, multiple ports are set in the same base station in this application, so there is no need to perform time synchronization on each port. After multiple ports receive the reference signal sent by the terminal, the base station can calculate and obtain a preset number of arrival time differences according to the time when each port receives the reference signal. Then the obtained time difference of arrival is sent to the positioning server, so that the positioning server can locate the terminal according to the preset number of time differences of arrival. In this application, because each port is set on the same base station, there is no need for time synchronization between the ports, and a new definition is defined. The measurement volume avoids the time error caused by time synchronization and improves the positioning accuracy.

Optionally, based on the previous embodiment, before the step of obtaining a preset number of time differences of arrival and sending the preset number of time differences of arrival to the positioning server includes:

Obtain port parameters of each port on the base station, and send to the positioning server, where the port parameters include the physical location of the first port, and a plurality of second ports relative to the first relative location; or include the physical location of each port .

As an embodiment, in this embodiment, before or at the same time that the base station sends the calculated time difference of arrival to the positioning server, it also obtains the port parameters of each port on the base station, that is, the parameters of each port pre-configured on the base station, the port The parameters include the physical position of the first port, and the relative positions of multiple second ports relative to the first port. The port parameters can be as follows:

Port ID physical location 00 R1 Port ID relative position 01 R2 10 R3 11 R4

Or the port parameters include the physical location of each port, and the port parameters can be as follows:

Port ID physical location 00 R1 01 R2 10 R3 11 R4

It should be understood that the manner in which the port parameter includes the physical location of the first port and the relative positions of the plurality of second ports relative to the first port is different from the manner in which the port parameter includes the physical location of each port. Different resources are required. Specifically, when transmitting the physical position of the antenna ports, when the distance between the antenna ports is relatively close, the transmission of the relative position can save resources, that is, when the distance between the antenna ports is relatively close, the port parameters include the physical position of the first port, And the manner in which multiple second ports are relative to the first relative position saves resources compared to the manner in which the port parameter includes the physical position of each port.

Then send the parameters of each port to the positioning server. As another embodiment, the base station can also send the port parameters of the port to the positioning server after configuring the port parameters (send the parameters of the target port to the positioning server), and in the subsequent positioning process, the base station does not need to re-send the port parameters of the port to the positioning server. Parameters sent to the location server. After the positioning server obtains the port parameters, it can determine the distance between each port according to the port parameters of the target port, and then according to the received time, it can use the hyperbolic calculation method according to the distance of the target port and the corresponding arrival time difference The location of the terminal.

Optionally, as another embodiment, the step of receiving the reference signal sent by the terminal, and sending the time difference of arrival of a preset number of ports on the base station receiving the reference signal to the positioning server may be include:

pairing each port in pairs according to the port parameters of each port and/or the quality of the reference signal received by each port, and selecting a preset number of target ports from each port pair;

calculating the time difference of arrival of the selected preset number of target ports receiving the reference signal, and sending the time difference of arrival to the positioning server.

In this embodiment, the base station can first select the target port to be used for this positioning from each port according to the parameters of each port. The principle of selecting the target port to be used is mainly to avoid the large error of the result caused by the too small distance between the target ports. , that is, try to select a port with a large port distance or a large time difference of arrival of the reference signal sent by the terminal as the target port. As an embodiment, the base station can perform two-by-two pairing according to the port parameters of the preset ports, so as to select a preset number of target ports from the paired ports, and the preset number of target ports can be used as the receiving terminal to send the reference signal The port may also be a port used to calculate the arrival time difference of the reference signal after each port receives the reference signal sent by the terminal. As another embodiment, according to the port parameters of each port, the preset number of ports with the largest physical distance is selected as the target port pair, and the base station only needs to calculate the time difference of arrival of the reference signal received by the selected preset number of target ports, Then, the calculated time difference of arrival is sent to the positioning server, so that the positioning server can realize the positioning of the terminal. It should be understood that if the base station does not send the physical position of the port in advance, or the physical position of the reference port and the relative positions of other ports to the positioning server, then when sending the time difference of arrival of the reference signal received by the selected two pairs of target ports, it is also necessary Send location information for the selected port pair. Of course, if the positioning terminal keeps the physical location information of each port of the base station in advance, the base station only needs to send the obtained time difference of arrival and the target port identifier corresponding to the time difference of arrival. As yet another embodiment, the base station may also obtain the quality of the received reference signal after receiving the reference signal sent by the terminal, and pair each port in pairs according to the quality of the reference signal received by each port, so as to select a preset number of to the destination port. Of course, the base station can also pair each port in pairs according to the port parameters of the ports and the quality of the reference signal received by each port, so as to select a preset number of target ports.

As an embodiment, the port parameters may also include each port identifier, and according to the port parameters of each port, the port parameters of each port and/or the quality of the reference signal received by each port perform two Two pairs, the step of selecting a preset number of target ports from each port pair may also include:

Two pairs of target ports are selected according to the port identifiers, wherein the identifiers of the two pairs of target ports represent that the rows and/or columns where the ports are located alternate.

As an embodiment, multiple ports on the base station can be arranged in rows and/or columns. As an example, 16 ports are set on the base station. As shown in Figure 3, the 16 ports are divided into 4 rows and 4 columns are set on the base station, and the identification of each port is named according to the row and column where it is located. For example, the identification of 16 ports are 00, 01, 02, 03; 10, 11, 12, 13; 20, 21, 22, 23; 30, 31, 32, 33. As another embodiment, multiple ports may also be located in the same row or column. The identifier of the port is named according to the row and/or column where it is located, so that each identifier of the port can represent the row and/or column where it is located. The rows or columns of the identifiers of the two ports are the same, which means that the two ports are located in the same row or column. In this way, when the base station selects the target port, it can quickly select the required target port directly according to the identifier of the port. Specifically, select A port pair with a large difference between the row and the column can be quickly selected, for example, the identifier of the port pair is selected as (00, 33) or (00, 32). It should be understood that the number of target port pairs may also be more than 2 pairs.

As an example, as shown in FIG. 4 , ports identified as 10, 11, 12, and 13 and ports identified as 00, 01, 02, and 03 are in the first line of the coordinate system; the port ID is 20 , 21, 22, and 23 ports are in the second row of the coordinate system; ports identified as 30, 31, 32, and 33 are in the third row of the coordinate system. That is to say, when dividing ports into rows or columns, multi-row ports may be divided into the same row or multi-column ports may be divided into the same column according to actual conditions.

As an embodiment, the port parameters include port identifiers, the port identifiers are named according to the physical position of each port according to the hierarchical arrangement, and the port parameters according to each port and/or each port receives the reference signal The quality of each port is paired in pairs, and the step of selecting a preset number of target ports from each port pair also includes:

Select two pairs of target ports according to the port IDs, where the IDs of the two pairs of target ports represent different levels of the ports.

As an embodiment, the identification of multiple ports on the base station can also be named according to the level of the physical location of each port. For example, as described in Figure 5, the level of the port is divided in a manner similar to the coordinate system, using two The element description port indicates that the port in this system is divided into two levels. The first level divides the largest four quadrants (that is, four areas), and each quadrant includes four antenna ports. Ports with the same first level identify the same first element; otherwise, the first element is different. For example, ports with port IDs of 00, 01, 02, and 03 belong to the first quadrant in the first layer (that is, layer 0); ports with port IDs of 10, 11, 12, and 13 belong to the first quadrant in the first layer. Two-quadrant (that is, layer 1); ports with port IDs of 20, 21, 22, and 23 belong to the third quadrant in the first layer (that is, layer 2); ports with port IDs of 30, 31, 32, and 33 belong to the second quadrant The fourth quadrant in the first level (ie, level 3). Further, any quadrant of the first level can continue to establish a coordinate system to form a second level. Ports that are the same at the second level identify that the second element is the same, otherwise the second element is different. For example, ports 00, 01, 02, 03 are the same at the first level, but different at the second level. The larger the level, the greater the distance between ports belonging to different levels. In this way, when the base station selects ports, it can quickly select the required target port according to the port ID according to the distance requirements of the target port. Specifically, when a large distance between target port pairs is required, different port pairs at the first level may be selected, such as (20, 30) or (11, 33). It should be understood that the number of target port pairs may also be more than 2 pairs. Further, as shown in FIG. 6 , in the case of the hierarchical distribution shown in FIG. 5 , the first, second and fourth quadrants can be further stratified respectively.

As an embodiment, the step of pairing each port in pairs according to the port parameters of each port and/or the quality of the reference signal received by each port, and selecting a preset number of target ports from each port pair is also include:

Calculate the average spacing between each port according to the port parameters of each port;

Two pairs of target ports with a port spacing greater than the average spacing are selected.

As an embodiment, in this embodiment, according to the physical position of each port, the average distance between each port can be calculated. At this time, the distance between the two ports in the port pair can be selected to be greater than or equal to the average distance as the target port pair , for example, if the average distance between the ports is 2 millimeters, then the port pair whose distance between the two ports is greater than or equal to 2 millimeters is selected as the target port pair. It should be understood that the number of target port pairs may also be more than 2 pairs.

As an embodiment, the step of pairing each port in pairs according to the port parameters of each port and/or the quality of the reference signal received by each port, and selecting a preset number of target ports from each port pair is also include:

Create a collection of selected port pairs;

Calculate the priority of any unselected port pair among all ports through a preset algorithm;

Selecting the antenna pair with the highest priority to add to the set until the number of antenna pairs in the set is greater than or equal to the preset number.

As an embodiment, every two of all the ports are regarded as a port pair, and the priority of the port pair is calculated by a preset algorithm. The higher the priority, the port pair can be the final selected target port pair. Specifically, a set can be created, which is used to put the selected port pairs into the set; calculate the priority of any unselected port pair among all ports through a preset algorithm, and put the port pair with the highest priority into the created Then continue to use the same preset algorithm to calculate the priority of the remaining port pairs from the remaining unselected port pairs, and select the port pair with the highest priority among the remaining port pairs again, and so on, so that the port pairs in the set Equal to the preset number, the port pair in the set is the target port pair.

As an embodiment, the base station may also calculate the priority of any unselected port pair according to the received reference signal quality, reference signal arrival time difference, relative position or physical position of the unselected port pair.

Specifically, the priority of any unselected port pair among all ports is calculated by the following preset algorithm:

为双曲线离心率，d _ij为端口i和j之间的距离，c为光速，r _i为端口i的相对位置或物理位置，i _n和j _n分别为所述集合中端口对的相对位置或物理位置。 Among them, P(i, j) is the priority of port pair (i, j), α, β, γ, μ are weighting factors, a _i is the received signal quality of port i, t _ij is the port pair (i, j ) reference signal arrival time difference,

is the hyperbolic eccentricity, d _ij is the distance between ports i and j, c is the speed of light, _ri is the relative position or physical position of port i, i _n and j _n are the relative positions of port pairs in the set, respectively or physical location.

个，假设第一轮计算，第一次选了端口对(00，33)，则端口对(00，33)的优先级， Specifically, as an example, the port shown in Figure 3 is used for illustration, and the number of port pairs that can be combined into 16 ports is

Assuming that in the first round of calculation, the port pair (00, 33) is selected for the first time, then the priority of the port pair (00, 33) is

The rest of the ports are calculated in the same way. After the calculation is completed, compare the priority of each port, select the largest one and put it in the set, and then perform the second round of calculation. Assuming that the port pair (00, 22) is selected for the first time in the second round, Then the priority of the port pair (00, 22),

After the other unselected port pairs are calculated, compare the maximum priority in the second round, and put the corresponding port pairs into the set. At this time, there are two port pairs in the set. And so on, until the number of port pairs in the set is greater than or equal to the preset number. In a specific embodiment, those skilled in the art may also calculate the priority of each port pair in other ways.

Referring to FIG. 7, FIG. 7 is the second flowchart of the positioning method provided by the embodiment of the present application. The positioning method in this embodiment of the present application may be executed by a positioning server.

As shown in Figure 7, the positioning method may include the following steps:

Step 601, sending a positioning information request to the base station, where the auxiliary information used for positioning in the positioning information request is used for configuration reference information of the base station;

Step 602, receiving a positioning information configuration completion response sent by the base station;

Step 603, receiving a preset number of time differences of arrival sent by the base station, and positioning the terminal according to the time difference of arrival, the time difference of arrival is received by the base station according to the preset number of ports on the base station obtained by calculating the time of the reference signal sent by the terminal.

Optionally, the step of receiving a preset number of time differences of arrival sent by the base station, and positioning the terminal according to the time difference of arrival includes:

receiving port parameters sent by the base station;

receiving a preset number of time differences of arrival sent by the base station, and positioning the terminal according to the port parameters and time differences of arrival.

Optionally, the positioning server receives a preset number of time differences of arrival sent by the base station, and the step of locating the terminal according to the time difference of arrival includes:

Using the port coordinates of each pair of ports as the focal point and the time difference of arrival of the reference signals received by each pair of ports as the real axis length, a preset number of hyperbolas are obtained;

Calculate the intersection coordinates of a preset number of hyperbolas, and use the intersection coordinates as the coordinates of the terminal.

Optionally, the step of calculating the intersection coordinates of a preset number of hyperbolas, and using the intersection coordinates as the coordinates of the terminal includes:

determining the number of initial positions of the terminal according to the coordinates of the intersection point;

If the number of initially determined positions of the terminal is greater than or equal to 2, then determine the position of the terminal according to the positive or negative of the arrival time difference of the reference signal received by the port;

If the number of the initial terminal positions is equal to 1, the coordinates of the hyperbola intersection point are the terminal positions.

Optionally, after the step of determining the position of the terminal according to the positive or negative of the time difference of arrival of the reference signal received by the port, it further includes:

re-determining the number of said terminal positions;

If the number of the terminal locations is greater than or equal to 2, determine the location of the positioning terminal according to the initial access information of the terminal, where the initial access information includes a terminal access beam index.

It should be noted that this embodiment serves as an implementation manner of a positioning server corresponding to the above method embodiment, therefore, reference may be made to relevant descriptions in the above method embodiment, and the same beneficial effects may be achieved. In order to avoid repeated description, details are not repeated here.

Referring to FIG. 8 , FIG. 8 is one of the structural diagrams of the positioning device provided by the embodiment of the present application. As shown in Figure 8, the positioning device 700 includes:

The first receiving module 701 is configured to receive the positioning information request sent by the positioning server and the reference signal sent by the terminal;

The configuration module 702 is configured to configure a reference signal according to the auxiliary information used for positioning in the positioning information request, and after the configuration of the reference signal is completed, send corresponding configuration information to the terminal, and send positioning to the positioning server An information configuration completion response, the positioning configuration information is used to assist the terminal to send the reference signal to the base station, and the positioning information configuration completion response is used to assist the positioning server to complete positioning;

The first sending module 703 is configured to send the time difference of arrival of a preset number of pairs of ports on the base station receiving the reference signal to the positioning server, where the time difference of arrival is used to assist the positioning server to locate the terminal .

Optionally, the positioning device 700 also includes:

An acquisition module configured to acquire port parameters of each port on the base station and send them to the positioning server, where the port parameters include the physical position of the first port and the relative positions of multiple second ports relative to the first; or include The physical location of each port.

The first sending module 703 includes:

The selection unit is configured to pair each port in pairs according to the port parameters of each port and/or the quality of the reference signal received by each port, and select a preset number of target ports from each port pair;

The first calculation unit is configured to calculate the time difference of arrival of the selected preset number of target ports receiving the reference signal, and send the time difference of arrival to the positioning server.

Optionally, the port parameters include port identifiers, the port identifiers are named according to the physical position of each port in rows and/or columns, and the selection unit is further configured to select two pairs of target ports according to each port identifier, wherein The designation of the two pairs of target ports indicates that the rows and/or columns of the ports alternate.

Optionally, the port parameters include port identifiers, the port identifiers are named according to the physical location of each port according to the hierarchical arrangement, and the selection unit is further configured to select two pairs of target ports according to each port identifier, wherein the two pairs of target ports The sign of indicates that the port belongs to a different layer.

Optionally, the select unit is also configured as:

Calculate the average spacing between each port according to the port parameters of each port;

Two pairs of target ports with a port spacing greater than the average spacing are selected.

Optionally, the select unit is also configured as:

Create a collection of selected port pairs;

Calculate the priority of any unselected port pair among all ports through a preset algorithm;

Selecting the antenna pair with the highest priority to add to the set until the number of antenna pairs in the set is greater than or equal to the preset number.

Optionally, the select unit is also configured as:

The priority of any unselected port pair is calculated according to the received reference signal quality, reference signal arrival time difference, relative position or physical position of the unselected port pair.

Optionally, the priority of any unselected port pair among all ports is calculated by the following preset algorithm:

为双曲线离心率，d _ij为端口i和j之间的距离，c为光速，r _i为端口i的相对位置或物理位置，i _n和j _n分别为所述集合中端口对的相对位置或物理位置。 Among them, P(i, j) is the priority of port pair (i, j), α, β, γ, μ are weighting factors, a _i is the received signal quality of port i, t _ij is the port pair (i, j ) reference signal arrival time difference,

is the hyperbolic eccentricity, d _ij is the distance between ports i and j, c is the speed of light, _ri is the relative position or physical position of port i, i _n and j _n are the relative positions of port pairs in the set, respectively or physical location.

Optionally, the first sending module 703 also includes:

The second calculation unit is configured to calculate the time difference of arrival of the reference signal received by every two ports, and select a preset number of time differences of arrival and send them to the positioning server. It should be understood that the first calculation unit and the second calculation unit may be the same unit or different units.

The positioning device 700 can realize each process of the method embodiment in FIG. 2 in the embodiment of the present application, and achieve the same beneficial effect. To avoid repetition, details are not repeated here.

Referring to FIG. 9, FIG. 9 is the second structural diagram of the positioning device provided by the embodiment of the present application. As shown in Figure 9, the positioning device 800 includes:

The second sending module 801 is configured to send a positioning information request to the base station, where the auxiliary information used for positioning in the positioning information request is used for configuration reference information of the base station;

The third receiving module 802 is configured to receive a positioning information configuration completion response sent by the base station;

The positioning module 803 is configured to receive a preset number of time differences of arrival sent by the base station, and locate the terminal according to the time difference of arrival, the time difference of arrival is received by the base station according to the preset number of ports on the base station The arrival time of the reference signal sent by the terminal is calculated and obtained.

The positioning module 803 is also configured to:

receiving port parameters sent by the base station;

receiving a preset number of time differences of arrival sent by the base station, and positioning the terminal according to the port parameters and time differences of arrival.

The positioning module 803 is also configured to:

Using the port coordinates of each pair of ports as the focal point and the time difference of arrival of the reference signals received by each pair of ports as the real axis length, a preset number of hyperbolas are obtained;

Calculate the intersection coordinates of a preset number of hyperbolas, and use the intersection coordinates as the coordinates of the terminal.

The positioning module 803 is also configured to:

determining the number of initial positions of the terminal according to the coordinates of the intersection point;

If the number of initially determined positions of the terminal is greater than or equal to 2, then determine the position of the terminal according to the positive or negative of the arrival time difference of the reference signal received by the port;

If the number of the initial terminal positions is equal to 1, the coordinates of the hyperbola intersection point are the terminal positions.

The positioning module 803 is also configured to:

re-determining the number of said terminal positions;

If the number of the terminal locations is greater than or equal to 2, determine the location of the positioning terminal according to the initial access information of the terminal, where the initial access information includes a terminal access beam index.

The positioning device 800 can realize various processes of the method embodiment in FIG. 7 in the embodiment of the present application, and achieve the same beneficial effect. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a base station. Referring to FIG. 10 , the communication device may include a processor 901 , a memory 902 and a program 9021 stored in the memory 902 and executable on the processor 901 .

When the program 9021 is executed by the processor 901, any steps in the method embodiment corresponding to FIG. 2 can be implemented and the same beneficial effect can be achieved, so details are not repeated here.

The embodiment of the present application also provides a positioning server. Referring to FIG. 11 , the communication device may include a processor 1001 , a memory 1002 and a program 10021 stored in the memory 1002 and executable on the processor 1001 .

When the program 10021 is executed by the processor 1001, any steps in the method embodiment corresponding to FIG. 7 can be implemented and the same beneficial effect can be achieved, so details are not repeated here.

Those skilled in the art can understand that all or part of the steps for implementing the methods of the above embodiments can be completed by program instructions related hardware, and the program can be stored in a readable medium. The embodiment of the present application also provides a readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, any steps in the above-mentioned method embodiments corresponding to FIG. 2 and FIG. 6 can be implemented. , and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.

The storage medium is, for example, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The above is the preferred implementation of the embodiment of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principles described in the present application, some improvements and modifications can also be made. These improvements and Retouching should also be regarded as the protection scope of this application.

Claims (20)

A positioning method, performed by a base station, the method comprising: Receive the positioning information request sent by the positioning server; Configure a reference signal according to the auxiliary information used for positioning in the positioning information request, and after the configuration of the reference signal is completed, send corresponding positioning configuration information to the terminal, and send a positioning information configuration completion response to the positioning server, the The positioning configuration information is used to assist the terminal to send the reference signal to the base station, and the positioning information configuration completion response is used to assist the positioning server to complete positioning; receiving the reference signal sent by the terminal, and sending the time difference of arrival of the reference signal received by a preset number of ports on the base station to the positioning server, and the time difference of arrival is used to assist the positioning server to locate the terminal to locate. The method according to claim 1, wherein before the step of receiving the reference signal sent by the terminal, and sending the time difference of arrival of the preset number of ports on the base station receiving the reference signal to the positioning server include: Obtain port parameters of each port on the base station, and send to the positioning server, where the port parameters include the physical location of the first port, and a plurality of second ports relative to the first relative location; or include the physical location of each port . The method according to claim 1, wherein the step of receiving the reference signal sent by the terminal, and sending the time difference of arrival of a preset number of ports on the base station receiving the reference signal to the positioning server includes : pairing each port in pairs according to the port parameters of each port and/or the quality of the reference signal received by each port, and selecting a preset number of target ports from each port pair; calculating the time difference of arrival of the selected preset number of target ports receiving the reference signal, and sending the time difference of arrival to the positioning server. The method according to claim 3, wherein the port parameters include port identifiers, and the port identifiers are named according to the physical location of each port in rows and/or columns, According to the port parameters of each port and/or the quality of the reference signal received by each port, each port is paired in pairs, and the step of selecting a preset number of target ports from each port pair includes: Two pairs of target ports are selected according to the port identifiers, wherein the identifiers of the two pairs of target ports represent that the rows and/or columns where the ports are located alternate. The method according to claim 3, wherein the port parameters include each port identifier, and the port identifiers are named according to the physical location of each port according to the hierarchical arrangement, The step of pairing each port in pairs according to the port parameters of each port and/or the quality of the reference signal received by each port, and selecting a preset number of target ports from each port pair also includes: Select two pairs of target ports according to the port IDs, where the IDs of the two pairs of target ports represent different levels of the ports. The method according to claim 3, wherein the ports are paired in pairs according to the port parameters of each port and/or the quality of the reference signal received by each port, and a preset number of pairs is selected from each port pair The steps for the target port also include: Calculate the average spacing between each port according to the port parameters of each port; Two pairs of target ports with a port spacing greater than the average spacing are selected. The method according to claim 3, wherein the ports are paired in pairs according to the port parameters of each port and/or the quality of the reference signal received by each port, and a preset number of pairs is selected from each port pair The steps for the target port also include: Create a collection of selected port pairs; Calculate the priority of any unselected port pair among all ports through a preset algorithm; Selecting the antenna pair with the highest priority to add to the set until the number of antenna pairs in the set is greater than or equal to the preset number. The method according to claim 7, wherein the step of calculating the priority of any unselected port pair in all ports through a preset algorithm comprises: The priority of any unselected port pair is calculated according to the received reference signal quality, reference signal arrival time difference, relative position or physical position of the unselected port pair. The method according to claim 8, wherein the priority of any unselected port pair in all ports is calculated by the following preset algorithm:

Among them, P(i, j) is the priority of port pair (i, j), α, β, γ, μ are weighting factors, a _i is the received signal quality of port i, t _ij is the port pair (i, j ) reference signal arrival time difference,

is the hyperbolic eccentricity, d _ij is the distance between ports i and j, c is the speed of light, _ri is the relative position or physical position of port i, i _n and j _n are the relative positions of port pairs in the set, respectively or physical location. The method according to claim 1, wherein the step of receiving the reference signal sent by the terminal, and sending the time difference of arrival of the preset number of ports on the base station receiving the reference signal to the positioning server is further include: Calculate the time difference of arrival of the reference signal received by every two ports, and select a preset number of time differences of arrival with the largest difference and/or send the time difference of arrival of the selected target port to the reference signal to the positioning server. A positioning method, performed by a positioning server, the method comprising: Sending a positioning information request to the base station, where the auxiliary information used for positioning in the positioning information request is used for configuring reference signals by the base station; receiving a positioning information configuration completion response sent by the base station; receiving a preset number of time differences of arrival sent by the base station, and positioning the terminal according to the time difference of arrival, the time difference of arrival is received by the base station according to the preset number of ports on the base station and sent by the terminal The arrival time of the reference signal is calculated and obtained. The method according to claim 11, wherein the step of receiving a preset number of time differences of arrival sent by the base station and positioning the terminal according to the time difference of arrival comprises: receiving port parameters sent by the base station; receiving a preset number of time differences of arrival sent by the base station, and positioning the terminal according to the port parameters and time differences of arrival. The method according to claim 12, wherein the step of locating the terminal according to the port parameters and the time difference of arrival comprises: Using the port coordinates of each pair of ports as the focal point and the time difference of arrival of the reference signals received by each pair of ports as the real axis length, a preset number of hyperbolas are obtained; Calculate the intersection coordinates of a preset number of hyperbolas, and use the intersection coordinates as the coordinates of the terminal. The method according to claim 13, wherein the step of calculating the intersection coordinates of a preset number of hyperbolas and using the intersection coordinates as the coordinates of the terminal comprises: determining the number of initial positions of the terminal according to the coordinates of the intersection point; If the number of initially determined positions of the terminal is greater than or equal to 2, then determine the position of the terminal according to the positive or negative of the arrival time difference of the reference signal received by the port; If the number of the initial terminal positions is equal to 1, the coordinates of the hyperbola intersection point are the terminal positions. The method according to claim 14, wherein, after the step of determining the position of the terminal according to the positive or negative time difference of arrival of the reference signal received by the port, further comprising: re-determining the number of said terminal positions; If the number of the terminal locations is greater than or equal to 2, determine the location of the positioning terminal according to the initial access information of the terminal, where the initial access information includes a terminal access beam index. A positioning device, the positioning device comprising: The first receiving module is configured to receive the positioning information request sent by the positioning server and the reference signal sent by the terminal; The configuration module is configured to configure a reference signal according to the auxiliary information used for positioning in the positioning information request, and after the configuration of the reference signal is completed, send corresponding configuration information to the terminal, and send the positioning information configuration completion to the positioning server In response, the positioning configuration information is used to assist the terminal to send the reference signal to the base station, and the positioning information configuration completion response is used to assist the positioning server to complete positioning; The first sending module is configured to send the time difference of arrival of a preset number of pairs of ports on the base station receiving the reference signal to the positioning server, where the time difference of arrival is used to assist the positioning server to locate the terminal. A positioning device, the positioning device comprising: The second sending module is configured to send a positioning information request to the base station, and the auxiliary information used for positioning in the positioning information request is used for the configuration reference information of the base station; The third receiving module is configured to receive a positioning information configuration completion response sent by the base station; The positioning module is configured to receive a preset number of time differences of arrival sent by the base station, and locate the terminal according to the time difference of arrival, the time difference of arrival is received by the base station according to the preset number of ports on the base station. The time of arrival of the reference signal sent by the terminal is calculated and obtained. A base station, comprising: a memory, a processor, and a program stored on the memory and operable on the processor; the processor is configured to read the program in the memory to realize the implementation as claimed in claims 1 to 10 A step in any one of the positioning methods. A positioning server, comprising: a memory, a processor, and a program stored on the memory and operable on the processor; the processor is configured to read the program in the memory to implement claims 11 to 15 The steps in any one of the positioning methods. A readable storage medium, used to store a program, the program implements the steps in the positioning method according to any one of claims 1 to 10 when the program is executed by a processor, or reads the program in the memory to implement the steps in the positioning method according to the claim The steps in the positioning method described in any one of claims 11 to 15.

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