WO2019134125A1

WO2019134125A1 - Positioning method, server and system based on narrowband internet of things

Info

Publication number: WO2019134125A1
Application number: PCT/CN2018/071595
Authority: WO
Inventors: 林之楠; 李鹏
Original assignee: 海能达通信股份有限公司
Priority date: 2018-01-05
Filing date: 2018-01-05
Publication date: 2019-07-11

Abstract

Disclosed are a positioning method, positioning server and positioning system based on narrowband Internet of things. The positioning method comprises: obtaining a positioning request of a narrowband Internet of things device to be positioned; determining a position region in which the narrowband Internet of things device to be positioned is located; activating other narrowband Internet of things devices in the position region, and obtaining positioning information by means of the other narrowband Internet of things devices or the narrowband Internet of things device to be positioned; and obtaining position information of the narrowband Internet of things device to be positioned according to the positioning information. The present invention can implement indoor positioning on a device on the basis of the narrowband Internet of things.

Description

Positioning method, server and system based on narrowband internet of things

[Technical Field]

The present invention relates to the field of communication networks, and in particular, to a positioning method, a positioning server, and a positioning system based on a narrowband Internet of Things.

【Background technique】

Positioning technology has a wide range of application requirements in various areas of people's lives. For example, in the field of public safety, for emergency security incidents, rescuers need to quickly and accurately locate themselves and targets to ensure efficient rescue missions.

The existing positioning technologies all have problems such as poor positioning accuracy, such as Bluetooth positioning technology, the Bluetooth signal penetration is weak, and the transmission position signal needs to use other communication networks, which is susceptible to interference, resulting in a decrease in positioning accuracy. For example, radio frequency identification and positioning technology, if the use of active readers and passive tags, because of the high cost and can not be deployed in large quantities, resulting in poor positioning accuracy; if passive readers and active tags are used, multiple simultaneous readings cannot be performed at the same time. Labeling results in poor positioning and usability.

[Summary of the Invention]

The invention provides a positioning method, a positioning server and a positioning system based on a narrowband internet of things to solve the problem of poor positioning accuracy existing in the existing positioning technology.

To solve the above problem, the present invention provides a positioning method based on a narrowband Internet of Things, comprising: obtaining a positioning request of a narrowband IoT device to be located; determining a location area where the narrowband IoT device is to be located; and activating the location area Other narrow-band IoT devices obtain positioning information through other narrow-band IoT devices or narrow-band IoT devices to be located; and obtain location information of the narrow-band IoT devices to be located according to the positioning information.

To solve the above problems, the present invention provides a positioning server based on a narrowband Internet of Things, the positioning server includes a processor and a memory; the memory stores a computer program, and the processor implements the following steps when executing the computer program: obtaining a narrowband Internet of Things to be located Positioning request of the device; determining the location area where the narrowband IoT device to be located is located; and other narrowband IoT devices in the activated location area, obtaining positioning information through other narrowband IoT devices or narrowband IoT devices to be located; obtaining according to the positioning information Location information of the narrowband IoT device to be located.

To solve the above problem, the present invention provides a positioning method based on a narrowband Internet of Things, the positioning method includes: a narrowband IoT device to be located sends a positioning request to a positioning server; and the positioning server determines a location area where the narrowband IoT device to be located is located The positioning server activates other narrow-band IoT devices in the location area, and acquires positioning information through other narrow-band IoT devices or narrow-band IoT devices to be located; the positioning server obtains location information of the narrow-band IoT devices to be located according to the positioning information.

In order to solve the above problems, the present invention provides a positioning system based on a narrowband Internet of Things, the positioning system includes a narrowband IoT device and a positioning server; the narrowband IoT device connects to the positioning server to implement communication; and the narrowband IoT device includes a narrowband IoT device to be located. And other narrowband IoT devices; the narrowband IoT device to be located is used to send a positioning request to the positioning server; the positioning server is used to determine the location area where the narrowband IoT device is to be located; the positioning server is used to activate other narrowbands in the location area The Internet of Things device obtains positioning information through other narrow-band IoT devices or narrow-band IoT devices to be located; the positioning server is configured to obtain location information of the narrow-band IoT device to be located according to the positioning information.

The positioning method based on the narrowband Internet of Things is used for positioning a narrowband IoT device, first obtaining a positioning request of a narrowband IoT device to be located, and then determining a location area where the location is located; and activating other narrowband Internet of Things in the location area. The device enables other devices to communicate with the server to be located, that is, to locate the other narrow-band IoT devices; obtain the positioning information through other narrow-band IoT devices or the narrow-band IoT devices to be located, and the positioning information is other devices and to be determined. The location information of the narrowband IoT device to be located is obtained according to the positioning information. The present invention implements the positioning of the server to be located based on the narrowband Internet of Things, and the positioning accuracy is high.

[Description of the Drawings]

1 is a schematic structural view of an embodiment of a positioning system based on a narrowband Internet of Things according to the present invention;

2 is a schematic structural diagram of a positioning reference sequence and a position information sequence in the positioning system embodiment shown in FIG. 1;

3 is a schematic diagram of a TDOA positioning method in the positioning system embodiment shown in FIG. 1;

4 is a schematic diagram of an application scenario of the positioning system embodiment shown in FIG. 1;

5 is a schematic flow chart of a first embodiment of a narrowband Internet of Things positioning method according to the present invention;

6 is a schematic flow chart of a second embodiment of a narrowband Internet of Things positioning method according to the present invention;

7 is a schematic flow chart of a third embodiment of a narrowband Internet of Things positioning method according to the present invention;

8 is a partial flow chart of a fourth embodiment of a narrowband Internet of Things positioning method according to the present invention;

9 is a schematic structural diagram of an embodiment of a narrowband Internet of Things positioning server according to the present invention;

10 is a schematic diagram showing the software structure of the positioning server embodiment shown in FIG. 9;

11 is a schematic flow chart of a fifth embodiment of a narrowband Internet of Things positioning method according to the present invention;

12 is a schematic structural diagram of an embodiment of a narrowband Internet of Things device to be positioned according to the present invention;

13 is a schematic diagram showing the software structure of the embodiment of the narrowband Internet of Things device shown in FIG.

【Detailed ways】

The solution of the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

The invention proposes to use the narrowband Internet of Things technology to realize positioning, which is mainly used for realizing indoor positioning, and can meet the requirements of the location based service (LBS) in various situations, that is, determining the location information of the user, thereby providing the user with the location information. Corresponding services, such as indoor positioning services in daily life, positioning services in emergency rescue, etc.

Narrow Band Internet of Things (NB-IoT) is a new type of Internet of Things technology proposed in the 3GPP R13 version. It can be deployed directly in a GSM network, UMTS network or LTE network in a cellular network. It has the characteristics of wide signal coverage, strong penetrating power, low power consumption and low cost.

The invention provides positioning based on narrowband Internet of Things, and is mainly applied to indoor positioning, that is, constructing a network system based on narrowband Internet of Things in the indoor, and performing indoor positioning service in the network system. Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an embodiment of a positioning system based on a narrowband Internet of Things according to the present invention.

The positioning system 100 of the present embodiment includes a narrowband Internet of Things device 11 and a positioning server 12, and the narrowband Internet of Things device and the positioning server 12 are communicatively connected. The positioning server 12 can manage the narrowband Internet of Things device 11 and collect and process information.

In a practical application, the positioning server 12 may be a computing module in the communication base station, and the positioning server 12 may also be another computing device different from the base station, that is, the positioning system 100 further includes a base station, and the narrowband Internet of Things device 11 Communication is achieved by the base station and the location server 12.

The signal strength of the base station can cover a certain area, and the base station is responsible for communicating with the narrowband IoT device 11 in the area, and the instruction of the positioning server 12 can be sent to the narrowband IoT device 11 and can also be received from the narrowband IoT device 11. The information is reported to be transmitted to the location server 12.

For both cases where the location server 12 is part of the base station or different from the base station, the location server 12 is used to manage the entire positioning system 100, that is, to control the narrowband IoT device 11 and to process the collected information.

There are generally a plurality of narrowband IoT devices 11, including a narrowband IoT device 111 to be located and other narrowband IoT devices 112. The narrowband IoT device 111 to be located can determine its own location information according to the location information of other narrowband IoT devices 112.

Other narrowband IoT devices 112 act as IoT location tags, whose location information is known to the location server 12, and the sequence of information that communicates with the location server 12 has a special format that can be used to determine the narrowband Internet of Things to be located. The location of device 111. It may be a fixed IoT tag distributed in a certain strategy in the positioning system 100, or may be a temporarily fixed device in the positioning system 100 to determine location information.

The narrowband IoT device 111 to be located can communicate with other devices based on the narrowband Internet of Things in the positioning system 100, and its location information is uncertain.

In order to further realize the positioning of the narrow-band IoT device 111 to be located, each device in the positioning system 100 needs to be able to implement different functions.

First, the narrowband IoT device 111 to be located can send a positioning request to the positioning server 12; after receiving the positioning request, the positioning server 12 determines the location area where the narrowband IoT device 111 is to be located, and then activates other narrowbands in the location area. Internet of Things device 112.

After the other narrowband IoT devices 112 are activated, they communicate with the narrowband IoT device 111 to be located, and can transmit a positioning reference sequence to each other to perform calculation according to the positioning reference sequence by using an algorithm, and finally obtain the location information of the narrowband IoT device 111 to be located. In addition, other narrowband IoT devices 112 are in a sleep mode prior to being activated, typically transmitting signals of limited information for a long period of time. After being activated, it is in the positioning mode, and the signal including the positioning reference sequence is continuously or frequently transmitted before the positioning task is completed.

In this embodiment, the TDOA positioning algorithm is used to perform calculation according to the positioning reference sequence. In other embodiments, a positioning algorithm such as RSSI (Receiving Signal Strength Indication) may be used.

Specifically, there are various ways to obtain the location information of the narrowband Internet of Things device 111 to be located.

First, the narrowband IoT device 111 to be located receives the positioning reference sequence and the location information sequence of the other narrowband IoT devices 112.

The positioning reference sequence and the position information sequence are sent in a frame structure of one time slot. For example, as shown in FIG. 2, FIG. 2 is a schematic structural diagram of a positioning reference sequence and a position information sequence in the positioning system embodiment shown in FIG. Two frame structures are shown in Figure 2, which can be selected according to the channel environment. When the channel environment is poor, a format can be repeatedly transmitted to implement time-division gain.

The narrowband IoT device 111 to be located uses the TDOA positioning algorithm to perform delay calculation on the received Positioning Reference Signal (PRS) to obtain its relative position with other narrowband Internet of Things devices 112.

The specific calculation process is understood in conjunction with FIG. 3. FIG. 3 is a schematic diagram of the TDOA positioning method in the positioning system embodiment shown in FIG.

The other narrowband IoT devices 112 in FIG. 3 include five IoT tags A(x _a , y _a ), B(x _b , y _b ), C(x _c , y _c ), D(x _d ) with known location information. , y _d ), E(x _e , y _e ), which sends a positioning reference sequence and a position information sequence to the narrow-band IoT device 111 to be located, and the position information sequence represents a specific coordinate, such as (x _a , y _a ) and the like.

The narrowband IoT device 111 to be located calculates the time a, b, c, d, e of each IoT tag according to the received positioning reference sequence, and obtains the time difference between the two IoT tags by the TDOA positioning algorithm, such as a point. The difference between B and A is ba. The trajectory with constant value is a curve. Similarly, the curves of cb, ac, ec and ed are obtained. Due to the error of delay measurement, each curve actually covers a certain width area. The intersection of the strip curves is the possible area of the narrow-band IoT device 111 to be located, and the possible area also indicates the relative position of the narrow-band IoT device 111 to be positioned with other narrow-band IoT devices 112.

For example, c-b, a-c obtains the ABC positioning area, and e-c and e-d obtain the CDE positioning area, and the overlapping portions of the two positioning areas can further narrow down the possible area of the narrow-band IoT device 111 to be located. It is conceivable that the more IoT tags, the smaller the possible area of the narrow-band IoT device 111 to be located, and the corresponding calculated position information will become more and more accurate.

After the narrowband IoT device 111 to be located obtains the possible region by using the TDOA positioning algorithm, the center point of the possible region, that is, according to the relative position of the other narrowband IoT devices 112 and the position information sequence of the other narrowband IoT devices 112 themselves is calculated. Your own coordinate information.

The narrowband Internet of Things device 111 to be located uploads the coordinate information to the location server 12, and the location server 12 obtains the location information of the narrowband Internet of Things device 111 to be located. The coordinate information is position coordinates obtained based on the coordinates at the time of calculation. After the positioning information is acquired by the positioning server 12, the position information may be further processed, or the coordinate information may be directly used as the position information.

Second, the other narrowband IoT device 112 receives the positioning reference sequence of the narrowband IoT device 111 to be located.

Similarly, the other narrowband IoT devices 112 may use the TDOA positioning algorithm to calculate the received positioning reference sequence to obtain the distance information of the narrowband IoT device 111 to be located. The specific calculation process is not described herein.

The other narrowband IoT devices 112 upload the distance information to the location server 12, and the location server 12 has location information of other narrowband Internet of Things devices 112. Therefore, the narrowband objects to be located can be calculated according to the distance information and the location information of other narrowband IoT devices 112. Location information of the networked device 111.

The above positioning system 100 can realize the positioning of the narrow-band IoT device 112 to be located. As described above, the narrow-band IoT device 112 to be located needs to issue a positioning request, and the positioning system 100 starts to locate it. However, the narrowband IoT device 112 to be located cannot issue a positioning request autonomously. In the positioning service of daily life, the positioning request may be issued by the user; in the emergency positioning service, the user may be in danger and cannot control the request. At this time, the positioning server 12 needs to be able to find the narrowband IoT device 112 to be located, and then control it to issue a positioning request.

For the emergency rescue location service, the rescue server sends a scan request for the selected area to the location server 12, and the location server 12 acquires the identity information of all the narrowband IoT devices 11 in the selected area according to the scan request, according to the identity information. To determine the narrowband IoT device to be located, whether the narrowband IoT device 11 is a fixed resident IoT tag can be determined by the identity information, and the non-stationary resident is considered to be a narrowband IoT device to be located. Then, the narrowband IoT device to be located is controlled to issue a positioning request.

For a more detailed understanding of the positioning system of the present invention, the application scenario is described below. Please refer to FIG. 4, which is a schematic diagram of an application scenario of the positioning system embodiment shown in FIG.

The application scenario shown in Figure 4 is indoors, possibly a public building or a family room. The narrowband Internet of Things device 11 includes other narrowband IoT devices 112, such as an illumination light (IoT tag 2), an electrical device (IoT tag 3), a specially arranged IoT tag, and of course a narrowband IoT device 111 to be located.

When positioning the narrowband IoT device 111 to be located, the IoT tag in its vicinity is activated to communicate with it to obtain the location information of the narrowband IoT device 111 to be located.

In the current explosive development of the Internet of Things, a large number of IoT tags will be loaded on the building's lighting, power, gas system and other equipment for daily use, using these fixed and regular widely distributed IoT tags. The positioning tag can fully meet the strict requirements of the positioning in the public security field, and provide stable and reliable indoor positioning services for airport stations, office buildings, schools, shopping centers, etc. in the event of various disasters or emergencies, for emergency rescue personnel and commanders. Action decisions provide a strong reference and guarantee.

The positioning server 12 in the positioning system 100 is set in the base station, and the base station is mainly used for signal transmission, and has no substantial impact on the positioning process. Of course, in practical applications, the base station may also process the transmitted signals to adapt to different Terminal equipment. Based on this, the present application proposes a positioning method from the perspective of a positioning server and a narrowband IoT device. For details, please refer to FIG. 5 and FIG. 6. FIG. 5 is a schematic flowchart of a first embodiment of a narrowband Internet of Things positioning method according to the present invention. 6 is a schematic flowchart of the second embodiment of the narrowband Internet of Things positioning method according to the present invention.

FIG. 5 is a first embodiment of a positioning method for a narrowband IoT device to be located to actively locate a positioning request, which includes the following steps.

S11: The narrowband IoT device to be located sends a positioning request to the positioning server.

The narrowband IoT device to be located is controlled by the user to issue a positioning request to the positioning server.

S12: The positioning server determines a location area where the narrowband IoT device to be located is located.

In this step, the positioning server is used as an example of another device that is different from the base station, and the positioning server determines, by using the base station, a location area where the narrowband IoT device to be located is located. Specifically, after receiving the location request in step S11, the base station initially determines the location area in which the location is located according to the signal strength and direction of the location request, and then reports the location area to the location server, so that the location server can determine the location. region.

S13: The positioning server activates other narrowband IoT devices in the location area to obtain positioning information through other narrowband IoT devices or narrowband IoT devices to be located.

S14: The positioning server obtains location information of the narrowband IoT device to be located according to the positioning information.

Step S13 is to activate other narrow-band IoT devices in the vicinity of the narrow-band IoT device to be located, so as to generate signal transmission between the narrow-band IoT device to be located and other narrow-band IoT devices to obtain positioning information, which can finally be located according to the positioning in step S14. The information obtains the location information, that is, this step embodies the main calculation process of obtaining the location information of the narrowband IoT device to be located.

Specifically, there are various ways to implement steps S13 and S14, and two examples are given below.

S131: The other narrowband IoT device receives the positioning reference sequence of the narrowband IoT device to be located.

S133: The other narrowband IoT device calculates distance information from the narrowband IoT device to be located according to the positioning reference sequence.

S135: The positioning server acquires distance information through other narrowband IoT devices.

S141: The positioning server obtains location information of the narrowband IoT device to be located according to the distance information.

The specific calculation method of the foregoing steps S131, S133, S135, and S141 has been described in the embodiment of the positioning system, and is not described here. The method finally calculates the location information of the narrowband IoT device to be located by the positioning server.

S132: The narrowband IoT device to be located receives the positioning reference sequence and the location information sequence of the other narrowband IoT devices.

S134: The narrowband IoT device to be located obtains a relative position with other narrowband IoT devices according to the positioning reference sequence, and calculates coordinate information according to the relative position and position information sequence.

S136: The positioning server acquires coordinate information by using the narrowband IoT device to be located.

S142: The positioning server obtains location information of the narrowband IoT device to be located according to the coordinate information.

The specific calculation method of the foregoing steps S132, S134, S136, and S142 is also described in the positioning system embodiment. In this method, the coordinate information calculated by the narrowband IoT device to be located is finally uploaded to the positioning server, so that the positioning server obtains location information.

FIG. 6 is a second embodiment of a positioning method for a passive positioning request to be located by a narrowband IoT device to be located. In the emergency rescue, the rescue personnel can directly send a scanning request to the positioning server to detect all narrowbands in the dangerous area. Networked devices scan. The narrowband IoT device can be a smart terminal such as a mobile phone or a wearable device that the user carries with him or her. After scanning, you can find out if the user is already in the danger zone. If it is already in the danger zone, you can locate it for rescue.

The positioning method of this embodiment includes the following steps.

S21: The positioning server acquires a scan request of the selected area.

S22: The positioning server acquires identity information of all narrow-band IoT devices in the selected area.

S23: The positioning server determines, according to the identity information, the narrowband IoT device to be located in all the narrowband IoT devices.

Specifically, the location server has a preset database, and the preset database stores the resident IoT label, so that it can be determined whether the obtained identity information exists in the preset database, and if so, the narrowband corresponding to the identity information The IoT device is a resident IoT tag, that is, its location information is determined, and no positioning is required; if not, the narrowband IoT device corresponding to the identity information is a narrowband IoT device to be located.

S24: Control the narrowband IoT device to be located to issue a positioning request.

After the positioning server determines that the narrowband IoT device is to be located, the controller issues a positioning request to enter a process for positioning the steps, that is, steps S25-S28.

S25: The narrowband IoT device to be located sends a positioning request to the positioning server.

S26: The positioning server determines a location area where the narrowband IoT device to be located is located.

S27: The positioning server activates other narrowband IoT devices in the location area.

S28: The positioning server obtains location information of the narrowband IoT device to be located according to the positioning information.

The above steps S25-S28 are similar to the steps S11-S14 in the first embodiment of the positioning method, and details are not described herein.

The first embodiment and the second embodiment of the above positioning method relate to the transmission and processing of data by the positioning server and the narrow-band IoT device to be located. That is, when the positioning method is implemented, the corresponding computer program can be executed in the positioning server and the narrow-band IoT device to be positioned to implement the first embodiment and the second implementation of the positioning method, and the computer program is stored in the computer storage medium. The computer storage medium can be a floppy disk, a hard disk, an optical disk, a memory card, etc., and can be read and written through an interface connection; and can also be read and written through a network connection in a third-party server.

From the perspective of the location server, it is capable of running a related computer program to implement the positioning method, and the positioning method implemented by the user is specifically referred to FIG. 7 and FIG. 8. FIG. 7 is a flowchart of the third embodiment of the narrowband Internet of things positioning method according to the present invention. FIG. 8 is a partial flow chart of a fourth embodiment of the narrowband Internet of Things positioning method according to the present invention.

FIG. 7 is a positioning method implemented by a positioning server when a narrowband IoT device to be located actively requests a positioning, and includes the following steps.

S31: Acquire a positioning request of the narrowband IoT device to be located.

From the perspective of the location server, it first obtains the location request.

S32: Determine a location area where the narrowband IoT device to be located is located.

In this step S32, the positioning server determines, by the base station, a location area where the narrowband IoT device to be located is located.

S33: Activate other narrow-band IoT devices in the location area to obtain positioning information through other narrow-band IoT devices or narrow-band IoT devices to be located.

The positioning information acquired by the positioning server may be coordinate information calculated by the narrowband IoT device to be located according to the relative position of the narrowband IoT device to be located and other narrowband IoT devices.

It may also be the distance information of the narrowband IoT device to be located with other narrowband IoT devices.

S34: Obtain location information of the narrowband IoT device to be located according to the positioning information.

If the positioning information obtained by the positioning server in step S33 is the coordinate information calculated by the narrowband IoT device to be located, the location information of the narrowband Internet of Things device to be located is obtained according to the coordinate information.

If the location information obtained by the location server in step S33 is the distance information of the narrowband IoT device to be located and other narrowband IoT devices, the location information of the narrowband IoT device to be located is calculated according to the distance information.

FIG. 8 is a positioning method implemented by a positioning server when a narrowband IoT device to be positioned passively proposes a positioning request, and includes the following steps.

S41: Acquire a scan request of the selected area.

S42: Acquire identity information of all narrow-band IoT devices in the selected area.

S43: Determine, according to the identity information, the narrowband IoT device to be located in all the narrowband IoT devices.

In this step S43, the positioning server determines whether the identity information exists in its preset database. If no, the narrowband IoT device corresponding to the identity information is determined to be a narrowband IoT device to be located.

S44: Control the narrowband IoT device to be located to issue a positioning request.

Only partial steps are given above, and the steps shown in FIG. 7 are continued after the completion of step S44, and therefore will not be described again.

The positioning server implements the third and fourth embodiments of the above positioning method by executing a computer program. For the positioning server, the hardware structure thereof is shown in FIG. 9. FIG. 9 is a schematic structural diagram of an embodiment of the narrowband Internet of Things positioning server according to the present invention.

The location server 200 includes a processor 21 and a memory 22 in which a computer program is stored. When the processor 21 executes a computer program in the memory 22, the third and fourth embodiments of the above positioning method are implemented. That is, obtaining a positioning request of the narrow-band IoT device to be located; determining a location area where the narrow-band IoT device to be located is located; and activating other narrow-band IoT devices in the location area, by using the other narrow-band IoT device or the Determining the positioning of the narrowband IoT device to obtain positioning information; and obtaining location information of the narrowband IoT device to be located according to the positioning information.

For the software structure of the positioning server, please refer to FIG. 10 , which is a schematic diagram of the software structure of the positioning server embodiment shown in FIG. 9 .

The location server 200 includes a request acquisition module 31, an area determination module 32, a device activation module 33, and a location calculation module 34.

The request obtaining module 31 is configured to acquire a positioning request of the narrowband IoT device to be located; the area determining module 32 is configured to determine a location area where the narrowband IoT device is to be located; and the device activating module 33 is configured to activate other locations in the location area. The narrowband IoT device obtains the location information through the other narrowband IoT device or the narrowband IoT device to be located, and obtains the location information of the narrowband IoT device to be located according to the location information.

To implement the fourth embodiment of the positioning method described above, the location server 200 further includes an identity determination module 35 and a device control module 36.

After the request obtaining module 32 obtains the scan request of the selected area, the identity determining module 35 acquires the identity information of all the narrow-band IoT devices in the selected area, and determines the narrow-band IoT device to be located according to the identity information. The device control module 36 controls the narrowband IoT device to be located to issue a positioning request.

From the perspective of the narrowband IoT device to be located, it is capable of running a related computer program to implement the positioning method. The positioning method implemented by the user is specifically referred to FIG. 11. FIG. 11 is a fifth embodiment of the narrowband Internet of things positioning method according to the present invention. Schematic diagram of the process. The positioning method of this embodiment includes the following steps.

S51: Issue a positioning request.

The positioning request in this step S51 may be actively sent by the narrowband IoT device to be located, or may be controlled by the positioning server.

S52: Receive a positioning reference sequence and a sequence of location information sent by other narrowband IoT devices.

For the narrowband IoT device to be located, after it issues the positioning request, it starts to receive the positioning reference sequence and the position information sequence sent by the other narrowband IoT devices, and processes the received sequence in step S53.

S53: Obtain a relative position with other narrow-band IoT devices according to the positioning reference sequence, and calculate coordinate information according to the relative position and position information sequence.

The calculation process in this step S53 has been described in the embodiment of the positioning system, and details are not described herein again.

After step S53 is completed, the narrowband IoT device to be located calculates its own coordinate information, and uploads the coordinate information to the positioning server to complete the positioning of the narrowband IoT device to be positioned.

For the narrow-band IoT device to be positioned in the fifth embodiment, the hardware structure of the device is as shown in FIG. 12. FIG. 12 is a schematic structural diagram of an embodiment of the narrowband Internet of things device to be positioned according to the present invention.

The narrowband IoT device 400 to be located includes a processor 41, a memory 42, and a communicator 43. Communicator 43 is used to communicate with other narrowband IoT devices, as well as with base stations, based on narrowband Internet of Things. The memory 42 stores a computer program, and the processor 41 implements the fifth embodiment of the above positioning method when executing the computer program in the memory 42.

For the software structure of the narrowband IoT device to be located, please refer to FIG. 13, which is a software structure diagram of the embodiment of the narrowband IoT device shown in FIG. The narrowband IoT device 400 to be located includes a positioning request module 51, a signal receiving module 52, and a position calculating module 53.

The location requesting module 51 is configured to issue a location request. The signal receiving module 52 is configured to receive a positioning reference sequence and a position information sequence sent by other narrowband IoT devices. The location calculation module 53 is configured to obtain relative positions with other narrowband IoT devices according to the positioning reference sequence, and calculate coordinate information according to the relative position and position information sequence.

The above positioning technology based on the narrowband Internet of Things can realize the positioning of the device to be positioned, and further can determine the device that needs to be located in the system based on the narrowband Internet of Things, and then locate it.

In the above description, specific details such as specific system structures, interfaces, and techniques have been presented for the purpose of illustration and not limitation. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the invention.

Claims

A positioning method based on a narrowband Internet of Things, characterized in that the positioning method comprises:

Obtaining a positioning request of the narrowband IoT device to be located;

Determining a location area where the narrowband IoT device to be located is located;

Activating other narrow-band IoT devices in the location area, and acquiring positioning information by using the other narrow-band IoT devices or the narrow-band IoT devices to be located;

Obtaining location information of the narrowband IoT device to be located according to the positioning information.
The positioning method according to claim 1, wherein the positioning information comprises that the narrowband IoT device to be located is calculated according to a relative position of the narrowband IoT device to be located and the other narrowband IoT devices. Coordinate information.
The positioning method according to claim 1, wherein the positioning information comprises distance information of the narrowband IoT device to be located and the other narrowband IoT device.
The positioning method according to claim 1, wherein the positioning method further comprises:

Obtain a scan request for the selected area;

Obtaining identity information of all narrowband IoT devices in the selected area;

Determining, according to the identity information, the narrowband IoT device to be located in the all narrowband IoT devices;

Controlling the narrowband IoT device to be located to issue the positioning request.
The positioning method according to claim 4, wherein the determining, according to the identity information, the to-be-located server in the all-narrow-band IoT device comprises:

Determining whether the identity information exists in a preset database;

If not, determining that the narrowband IoT device corresponding to the identity information is a narrowband IoT device to be located.
A positioning server based on a narrowband Internet of Things, characterized in that the positioning server comprises a processor and a memory; the memory stores a computer program, and the processor implements the following steps when executing the computer program:

Obtaining a positioning request of the narrowband IoT device to be located;

Determining a location area where the narrowband IoT device to be located is located;

Activating other narrow-band IoT devices in the location area, and acquiring positioning information by using the other narrow-band IoT devices or the narrow-band IoT devices to be located;

Obtaining location information of the narrowband IoT device to be located according to the positioning information.
The location server of claim 6 wherein said processor further implements the following steps when executing said computer program:

Obtain a scan request for the selected area;

Obtaining identity information of all narrowband IoT devices in the selected area;

Determining, according to the identity information, the narrowband IoT device to be located in the all narrowband IoT devices;

Controlling the narrowband IoT device to be located to issue the positioning request.
The positioning server according to claim 6, wherein the positioning information comprises that the narrowband IoT device to be located is calculated according to a relative position of the narrowband IoT device to be located and the other narrowband IoT devices. Coordinate information, or distance information of the narrowband IoT device to be located and the other narrowband IoT devices.
A positioning method based on a narrowband Internet of Things, characterized in that the positioning method comprises:

The narrowband IoT device to be located sends a positioning request to the positioning server;

Determining, by the positioning server, a location area where the narrowband IoT device to be located is located;

The positioning server activates other narrowband IoT devices in the location area, and obtains positioning information by using the other narrowband Internet of Things devices or the narrowband IoT device to be located;

The location server obtains location information of the narrowband IoT device to be located according to the location information.
The positioning method according to claim 9, wherein the positioning server after activation of other narrowband IoT devices in the location area comprises:

The other narrowband IoT device receives a positioning reference sequence of the narrowband IoT device to be located;

The other narrowband IoT device calculates distance information from the narrowband IoT device to be located according to the positioning reference sequence;

The positioning server acquires the distance information by using the other narrowband IoT device;

The positioning server obtains location information of the narrowband IoT device to be located according to the distance information.
The positioning method according to claim 9, wherein after the positioning server activates other narrowband IoT devices in the location area, the method comprises:

The narrowband IoT device to be located receives a positioning reference sequence and a location information sequence of the other narrowband IoT device;

The narrowband IoT device to be located obtains a relative position with the other narrowband IoT devices according to the positioning reference sequence, and calculates coordinate information according to the relative position and the position information sequence;

The positioning server acquires the coordinate information by using the narrowband Internet of Things device to be located;

The positioning server obtains location information of the narrowband IoT device to be located according to the coordinate information.
The positioning method according to claim 9, wherein the positioning method further comprises:

The positioning server acquires a scan request of the selected area;

The positioning server acquires identity information of all narrow-band IoT devices in the selected area;

Determining, by the location server, whether the identity information exists in a preset database; if not, determining that the narrowband Internet of Things device corresponding to the identity information is a narrowband IoT device to be located;

Controlling the narrowband IoT device to be located to issue the positioning request.
A positioning system based on a narrowband Internet of Things, characterized in that the positioning system comprises a narrowband IoT device and a positioning server; the narrowband IoT device is connected to the positioning server for communication; the narrowband IoT device comprises a to-be-positioned Narrowband IoT devices and other narrowband IoT devices;

The narrowband IoT device to be located is configured to send a positioning request to the positioning server;

The positioning server is configured to determine a location area where the narrowband IoT device to be located is located;

The positioning server is configured to activate other narrowband IoT devices in the location area, and obtain positioning information by using the other narrowband Internet of Things devices or the narrowband IoT device to be located;

The location server is configured to obtain location information of the narrowband IoT device to be located according to the location information.
The positioning system according to claim 13, wherein the positioning server is further configured to:

Obtain a scan request for the selected area;

Obtaining identity information of all narrowband IoT devices in the selected area;

Determining, according to the identity information, the narrowband IoT device to be located in the all narrowband IoT devices;

Controlling the narrowband IoT device to be located to issue the positioning request.