KR20200010642A - Location tracking method and location tracking system - Google Patents

Abstract

The present invention relates to a location tracking method and a location tracking system. According to the present invention, the location tracking method comprises the steps of: receiving a first communication packet including location information from one or more connected user terminals via first wireless communication; and converting the first communication packet into a second communication packet according to second wireless communication and transmitting the second communication packet to a management terminal through the second wireless communication. The first wireless communication and the second wireless communication is a communication technology for transmitting a radio signal according to a different wireless communication standard.

Description

Location tracking method and location tracking system {LOCATION TRACKING METHOD AND LOCATION TRACKING SYSTEM}

The present invention relates to a location tracking method and a location tracking system, and more particularly, to a location tracking method and a location tracking system that can dynamically track and confirm the locations of a plurality of management targets by using a portable base station to which heterogeneous communication technology is applied. It is about.

The lead person leads and manages a number of the lead persons.

For example, a tour guide can lead travelers to a specific tourist destination and lead them to another tourist destination on a schedule. Elementary or kindergarten teachers can lead elementary or kindergarten students to perform specific experiences.

The lead person needs ongoing management of the lead person. For example, there is a need for the leader to request the group to be gathered at a specified time and to keep track of the location of the group at close range.

Existing parental management methods rely on the leader's perception. In other words, the instructor manages the inmate by keeping an eye on the inmate in a close distance and informing the instructor of the action guide or meeting place.

Due to these problems, a method of managing by a parent using a portable device is known. The person to be dispatched has a portable device including a Zigbee or Bluetooth module capable of short-range personal communication within a few meters, and transmits a radio signal indicating the presence of the person to be connected to the portable terminal of the leader. The leader may check the existence of the person to be guided according to the radio signal of the person to be received via the portable terminal.

There are a variety of limitations in how to manage a parent by using such a mobile device. The use of short-range personal communication allows the management of the to-be-hosted only within close proximity, and there are limitations on the location-specification.

With the development of communication technology, the Internet of Things (IOT) communication technology is being applied. IOT communication technology may be, for example, NB-IOT, CatM1, LoRa and the like. IOT communication technology is a low-power wide area wireless communication technology that has a communication reach of up to several Km.

If IOT communication technology can be used for the management of the pilot, it is possible to manage the pilot in a wider range. However, to use the IOT communication technology, the IOT communication network must be established everywhere. It needs to be connected, but it is not easy and it is virtually impossible to build an IOT network in every location.

In addition, if IOT communication technology can be used to dynamically identify the monitoring target, it can be useful in various fields.

As such, there is a need for a location tracking method and a location tracking system that can solve various problems of the previously known location tracking method for a managed person.

10-1623881 (B1), May 24, 2016

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to provide a location tracking method and a location tracking system for tracking a location of a monitoring target through an IOT communication network dynamically constructed through a portable base station. There is this.

In addition, the present invention utilizes the IOT network and heterogeneous short-range personal communication network location tracking method and location that allows the leader to manage the location of the instructor and control the instructor according to the location information received by the leader dynamically The purpose is to provide a tracking system.

In addition, an object of the present invention is to provide a location tracking method and a location tracking system that can remotely identify the monitoring target through the IOT communication network and heterogeneous communication network that is dynamically constructed at any place through a portable base station.

In addition, the present invention is to provide a location tracking method and a location tracking system that is provided with a GPS sensor and a proximity sensor in the user terminal to provide various alarms to the user terminal and the management terminal according to the position or situation of the monitoring target. There is a purpose.

Technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

According to an aspect of the present invention, there is provided a method for tracking a location of a portable base station, receiving a first communication packet including location information from one or more connected user terminals through first wireless communication, and the portable base station receiving the first communication packet in a second manner. Converting the second communication packet according to the wireless communication into a management terminal through the second wireless communication, wherein the first wireless communication and the second wireless communication transmit a wireless signal according to different wireless communication standards; Technology.

In the above location tracking method, the management terminal further comprises the step of recognizing the location of each user terminal from the second communication packet via the second wireless communication and the step of displaying the location of each user recognized by the management terminal on the display do.

In the above-described location tracking method, the management terminal determines whether the location of each user terminal is within the set range, the management terminal is out of the set range of the second wireless communication packet including a second communication packet to the user terminal out of the set range; And transmitting the first communication packet including the alarm message to the user terminal through the first wireless communication through the first wireless communication, wherein the first wireless communication is performed according to the IOT communication standard. Communication technology and the second wireless communication is a wireless communication technology according to the local area network.

In the above-described location tracking method, the management terminal further estimates a relative distance to the portable base station through the second wireless communication, and when the estimated relative distance is greater than or equal to the specified distance, the management terminal outputs an alarm signal. Include.

In the above location tracking method, the user terminal recognizes the separation event, when the separation event occurs, the user terminal sends the first communication packet including the separation event information and the location information to the portable base station through the first wireless communication And transmitting, by the portable base station, converting the first communication packet into a second communication packet including separation event information and location information and transmitting the second communication packet to the management terminal through the second wireless communication.

In the above-described location tracking method, the first wireless communication is a communication technology according to a narrowband IOT technology standard used in an unlicensed band, the second wireless communication is a mobile communication technology used in a mobile phone, and the management terminal uses a second wireless communication. Through the wireless communication with a plurality of portable base stations, it is possible to identify and control the location for each user group accessible to each portable base station.

A location tracking system according to an aspect of the present invention includes a portable base station, wherein the portable base station transmits and receives a first communication packet through a first wireless communication and a second communication packet through a second wireless communication. Receiving first packet data including location information from the user terminal extracted from the first communication packet through the second wireless communication unit and the first wireless communication unit, and receiving second packet data including the location information and the identifier of the user terminal. And a control unit transmitting the second communication packet including the second packet data through the second wireless communication by transmitting to the second wireless communication unit, wherein the first wireless communication and the second wireless communication are wireless according to different wireless communication standards. Communication technology that transmits signals.

The location tracking system further includes a management terminal that recognizes a location of each user terminal from a second communication packet through second wireless communication and displays a location of a user corresponding to each recognized user terminal on a display.

In the above-described location tracking system, the management terminal determines whether the location of each user terminal is within a set range through the received second communication packet, and transmits a second communication packet including an alarm message to the user terminal outside the set range. 2 is transmitted to the portable base station through wireless communication, wherein the controller of the portable base station receives the second packet data extracted from the second communication packet and includes an alarm message from the second wireless communication unit and includes an alarm message and an identifier of the user terminal. The first packet data is transmitted to the first wireless communication unit to transmit a first communication packet including the first packet data through the first wireless communication, wherein the first wireless communication is a wireless communication technology in accordance with the IOT communication standard and the second wireless communication. Communication is a wireless communication technology according to a local area network.

In the above-described location tracking system, further comprising a user terminal connected to the first wireless communication, when the user terminal recognizes the separation event using the proximity sensor provided, the location detected by the separation event information and the GPS sensor The first communication packet including the information is transmitted to the portable base station through the first wireless communication, and the portable base station converts the first communication packet into a second communication packet including the separated event information and the location information to perform the second wireless communication. Send to the management terminal through.

Location tracking method and location tracking system according to the present invention as described above has the effect of tracking the location of the monitoring target through the IOT communication network is dynamically built through the portable base station.

In addition, the location tracking method and the location tracking system according to the present invention as described above, by using the IOT communication network and heterogeneous short-range personal communication network to track the location of the leader by the leader and the leader according to the received location information It has the effect of being managed and controlled.

In addition, the location tracking method and the location tracking system according to the present invention as described above has the effect of enabling the remote monitoring of the monitoring target through the heterogeneous communication network and IOT communication network dynamically constructed at any place through the portable base station.

In addition, the location tracking method and location tracking system according to the present invention as described above is provided with a GPS sensor and a proximity sensor in the user terminal to provide a variety of alarms to the user terminal and the management terminal according to the location or situation of the monitoring target. It works.

Effects obtained in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

1 is a diagram illustrating an exemplary location tracking system in accordance with the present invention.
2 is an exemplary block diagram of a portable base station.
3 illustrates an exemplary block diagram of a user terminal.
4 is a diagram illustrating a control flow of an embodiment of tracking a location of a user terminal.
5 is a diagram illustrating a control flow of another embodiment for tracking the location of a user terminal.

The above objects, features, and advantages will become more apparent from the following detailed description with reference to the accompanying drawings, and as such, those skilled in the art to which the present invention pertains may share the technical idea of the present invention. It will be easy to implement. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an exemplary location tracking system in accordance with the present invention.

As shown in the example of FIG. 1, the location tracking system includes a management terminal 100, one or more portable base stations 200, one or more user terminals 300, and each device includes a first wireless communication network according to a specified wireless communication standard. 400 and the second wireless communication network 500 may perform wireless communication with other devices.

The location tracking system is configured to track (monitor) the location of the user terminal 300 using a wireless communication technology and manage the user terminal 300 (the user) based on the tracked (monitored) location.

1, the management terminal 100 is a device capable of monitoring the location of the user terminal 300. The management terminal 100 includes at least a communication interface, an input interface, a display, and a processor to recognize a location of at least one user terminal 300 to be managed from a second communication packet from the second wireless communication network 500 and to recognize the location. It is configured to display on the display provided with.

The management terminal 100 may be a stationary terminal or a portable terminal. For example, the management terminal 100 may be a portable terminal such as a smartphone or a tablet PC that can be connected and carried through a mobile communication network. Alternatively, the management terminal 100 may be a stationary terminal such as a personal computer, a server or a server terminal fixedly installed at a specific location.

The management terminal 100 which is a portable terminal is preferably paired one-to-one with a single portable base station 200 to move with the portable base station 200 and center the position of the portable base station 200 or the management terminal 100. In order to monitor the user terminal 300 to be managed.

The management terminal 100, which is a stationary terminal, may monitor a plurality of groups of user terminals 300 that are connected to the plurality of portable base stations 200 and move together with the portable base station 200 through a mobile communication network.

Various control flows performed by the management terminal 100 will be described in detail with reference to FIG. 4.

The portable base station 200 is a portable small (miniature) base station configured to relay communication packets between at least two wireless communication (network) technologies. For example, the portable base station 200 converts a communication packet received through the first wireless communication network 400 into a communication packet that can be transmitted through the second wireless communication network 500 and transmits the communication packet to the second wireless communication network 500. Can be. The portable base station 200 may convert the communication packet received through the second wireless communication network 500 into a communication packet transmittable through the first wireless communication network 400 and transmit the converted communication packet to the first wireless communication network 400.

The portable base station 200 is configured to transmit and receive various wireless communication packets through the first wireless communication network 400 and the second wireless communication network 500 including one or more small transmitting antennas.

The portable base station 200 will be described in detail with reference to FIGS. 2 and 4.

The user terminal 300 is a device which is connected to the designated portable base station 200 through the first wireless communication and used for monitoring of the user. The user terminal 300 may transmit a communication packet including various data to the portable base station 200 through the first wireless communication network 400. For example, the user terminal 300 may transmit a communication packet including the measured location information to the portable base station 200 through the first wireless communication.

In addition, the user terminal 300 may receive a communication packet including various control data from the portable base station 200 through the first wireless communication network 400. For example, the user terminal 300 receives a communication packet including an alarm message from the portable base station 200 and outputs the received alarm message as an alarm signal. The alarm signal may be composed of one or more combinations of an audio signal, a video signal, a user recognizable LED signal, a buzzer signal, and the like.

The user terminal 300 will be described in detail later with reference to FIG. 3.

The first wireless communication network 400 is a communication network through which the portable base station 200 and the user terminal 300 can transmit and receive wireless communication packets through wireless communication according to a designated technical standard. The user terminals 300 connected to the portable base station 200 form one communication cell zone through the portable base station 200, and the user terminal 300 in the zone transmits various communication packets according to a specified technical standard. Send and receive via

The first wireless communication network 400 may be a wireless communication network according to an Internet of Things (IOT) communication standard. For example, the first wireless communication network 400 may be a wireless communication network according to narrow band IOT, CatM1, and Lora communication technology standards capable of forming a communication cell zone having a reach within a range of several Km.

The first wireless communication network 400 may preferably be a wireless communication network according to a narrowband IOT technical standard. In particular, the first wireless communication network 400 may be a wireless communication network according to a narrowband IOT technology standard used in a licensed band requiring a license or an unlicensed band (for example, a 900 MHz band or a 2.4 GHz band) that does not require a license.

The portable base station 200 connected to the user terminals 300 through the first wireless communication network 400 may transmit and receive communication packets within several Km, and thus, the plurality of user terminals 300 in a wider area than the personal communication network based on the base station. ) Can be monitored.

The second wireless communication network 500 is a communication network through which the management terminal 100 and the portable base station 200 can transmit and receive wireless communication packets through wireless communication according to a designated technical standard.

The second wireless communication network 500 may be, for example, a personal area network that requires one-to-one pairing and / or wireless communication within a personal distance. For example, the second wireless communication network 500 may be Bluetooth, Zigbee or any standard wireless communication technology applicable to the present or future, and may be a communication network to which the Bluetooth wireless communication technology is applied. In this case, the second wireless communication network 500 allows the management terminal 100 and the portable base station 200 to perform stable communication within an adjacent distance (for example, within 2 m).

The second wireless communication network 500 may be a broadband communication network in which the management terminal 100 and the plurality of portable base stations 200 can wirelessly communicate at a long distance. For example, the second wireless communication network 500 may be a mobile communication network to which a mobile communication technology (for example, CDMA, GSM, LTE, etc.) used in a mobile phone (smartphone) is applied.

Here, according to various design examples of the location tracking system, the configuration of the second wireless communication network 500 may be different. For example, when the management terminal 100 monitors the user terminal 300 in a group (cell zone) corresponding to each portable base station 200 through the plurality of portable base stations 200, the second wireless communication network 500 ) May preferably be configured as a mobile communication network. If the management terminal 100 is a mobile phone, a smartphone, a tablet PC that can be used by the leader, and the leader moves with the leader (user), the second wireless communication network 500 is the portable base station 200 and the management terminal 100. ) May be a local area network (eg, Bluetooth) capable of communicating at adjacent distances (eg, within 5 m, 10 m, etc.).

2 is an exemplary block diagram of a portable base station 200.

According to FIG. 2, the portable base station 200 includes a first wireless communication unit 201, a second wireless communication unit 203, a storage unit 205, a connection unit 207, and a control unit 209. According to a design example, the portable base station 200 may further include other blocks not shown in FIG. 2 or omit any block in FIG. 2.

Referring to the portable base station 200 through FIG. 2, the first wireless communication unit 201 transmits and receives a communication packet through wireless communication according to a specified wireless communication standard. For example, the first wireless communication unit 201 may wirelessly transmit and receive various communication packets with the user terminal 300 through the first wireless communication network 400.

The first wireless communication unit 201 outputs an antenna and a circuit for transmitting and receiving a radio signal to the first wireless communication network 400 and an analog signal for outputting the radio signal to the antenna and captures the radio signal through the antenna and the circuit. Communication chipset for ringing.

The communication chipset may transmit and receive packet data output or received as a wireless signal to the controller 209. The first wireless communication unit 201 may be connected to an IOT wireless communication network capable of long distance communication having a several Km reach and includes an antenna and a communication chipset conforming to a narrow band IOT, CatM1 or Lora communication technology standard. .

The second wireless communication unit 203 transmits and receives a communication packet through wireless communication according to a designated wireless communication standard different from the first wireless communication unit 201. For example, the second wireless communication unit 203 may wirelessly transmit and receive various communication packets with the management terminal 100 through the second wireless communication network 500.

The second wireless communication unit 203 outputs an antenna and a circuit for transmitting and receiving a wireless signal to the second wireless communication network 500 and an analog signal for outputting the wireless signal to the antenna and captures the wireless signal through the antenna and the circuit. Communication chipset for ringing.

The communication chipset may transmit and receive packet data output or received as a wireless signal to the controller 209. The second wireless communication unit 203 has an antenna and a communication chipset for connection to a local area network (eg, Bluetooth, Zigbee, etc.) according to a wireless communication standard designated according to the design type. Alternatively, the second wireless communication unit 203 includes an antenna and a communication chipset for connection to a mobile communication network (for example, CDMA, GSM, LTE, etc.) according to a designated wireless communication standard. Alternatively, the second wireless communication unit 203 may include an antenna and a communication chipset for each of the local personal communication network and the mobile communication network to switch between the two communication networks, or set one of the two communication networks as the second wireless communication.

As described above, the wireless communication technology used in the first wireless communication unit 201 and the wireless communication technology used in the second wireless communication unit 203 are communication technologies for transmitting radio signals according to different wireless communication standards.

The storage unit 205 stores various data and programs, including volatile memory and / or nonvolatile memory. For example, the storage unit 205 may include identification information of each of the one or more user terminals 300 connected through the first wireless communication network 400 and the management terminal 100 connected through the second wireless communication network 500. Stores identification information.

The identification information of the user terminal 300 includes or is an identifier of the user terminal 300 accessible by the portable base station 200 through the first wireless communication network 400. The identifier includes, for example, a communication address of the user terminal 300 accessible via the first wireless communication network 400. The identifier may be included as a source or a destination address in the communication packet header of the first wireless communication network 400. The identifier may be included in the header of the communication packet on the physical layer and / or data link layer and transmitted over the wireless medium.

The identification information of the management terminal 100 includes an identifier or an identifier of the management terminal 100 accessible by the portable base station 200 through the second wireless communication network 500. The identifier includes, for example, the communication address of the management terminal 100 accessible via the second wireless communication network 500. The identifier may be included as a source or a destination address in the communication packet header of the second wireless communication network 500. The identifier may be included in the header of the communication packet on the physical layer and / or data link layer and transmitted over the wireless medium.

In addition, the storage unit 205 may store a control program available in the control unit 209. The control program is loaded into the control unit 209 to provide various control or relay functions related to location tracking of the user terminal 300.

The connection unit 207 transmits and receives data between blocks in the portable base station 200. The connection unit 207 may transmit various data to the control unit 209 or the corresponding block under the control of the control unit 209 including a parallel bus, a serial bus, and / or a GPIO.

The controller 209 controls the portable base station 200. The controller 209 may include a hardware block for controlling the portable base station 200. For example, the controller 209 may include an execution unit for executing a program instruction code, logic or a hardware block for performing a specific designated function, and control other blocks to perform a designated function.

Preferably, the control unit 209 includes one or more execution units that execute program command codes, and executes a control program stored in the storage unit 205 to perform a function designated for the portable base station 200 (relay). Function). The control unit 209 represents, for example, a processor, a microcomputer, a CPU, an MPU, or the like.

Looking at some of the controls performed by the control unit 209, the control unit 209 receives packet data from the first wireless communication unit 201. The packet data is data extracted from the communication packet recognized by the first wireless communication unit 201. The packet data may be, for example, packet data of the data link layer according to the first wireless communication standard.

The header of the packet data includes an identifier (as a source address) of the user terminal 300, and the payload of the packet data includes location information for specifying the location of the user terminal 300 and further a separation event. It may include information and may further include an identifier of the management terminal 100.

The controller 209 determines whether the identifier of the user terminal 300 of the packet data header is a registered identifier. For example, the controller 209 may determine whether the identifier of the packet data is a registered identifier by searching for the identification information of the user terminals 300 of the storage unit 205.

In the case of the registered identifier, the controller 209 configures packet data including the received location information, the separated event information, and the identifier of the registered user terminal 300 in the payload. The header of the configured packet data may include an identifier of the management terminal 100 of the storage unit 205 or an identifier of the management terminal 100 of the received packet data as a destination address.

The control unit 209 transmits the configured packet data to the second wireless communication unit 203, and the second wireless communication unit 203 uses the antenna provided with the communication packet including the packet data under the control of the control unit 209. 2 Sends to the wireless communication network (500).

As such, the portable base station 200 converts the communication packet from the first wireless communication network 400 into a communication packet to the second wireless communication network 500 to the management terminal 100 through the second wireless communication network 500. Can transmit The converted communication packet may include separation event information and / or location information received from the user terminal 300.

In addition, the second wireless communication unit 203 receives a communication packet transmitted through the second wireless communication network 500 through an antenna, extracts packet data, and transmits it to the control unit 209. The control unit 209 determines whether the source address of the header of the packet data is an identifier of the management terminal 100 by using identification information of the management terminal 100 of the storage unit 205.

When received from the management terminal 100, the control unit 209 determines the type of packet data. The determination of the type is made according to the promised format and according to the promised data format between the management terminal 100 and the control unit 209.

In case of a type for transmitting an alarm message to a specific user terminal 300, the controller 209 extracts an identifier of the user terminal 300 at a designated position of the payload of the packet data, and the identifier of the extracted user terminal 300 is It is determined whether the identifier of the registered user terminal 300. For example, the controller 209 determines whether the extracted identifier exists in the identification information of the registered user terminal 300.

When the identifier of the user terminal 300 exists in the identification information of the user terminal 300 of the storage unit 205, the controller 209 may identify an alarm message of the payload and the identifier of the extracted user terminal 300. Configure the packet data to include. For example, the controller 209 includes the alarm message in the newly configured payload and includes the identifier of the user terminal 300 in the header (destination address) of the packet data. In addition, the controller 209 may further include an identifier of the management terminal 100 in the payload.

The controller 209 transmits the configured packet data to the first wireless communication unit 201, and the first wireless communication unit 201 transmits the communication packet of the received packet data to the first wireless communication network 400 through an antenna.

3 is a diagram illustrating an exemplary block diagram of a user terminal 300.

According to FIG. 3, the user terminal 300 connected to the first wireless communication includes a first wireless communication interface 301, a GPS sensor 303, a proximity sensor 305, a memory 307, an output interface 309, and the like. A processor 311. According to a design example, the user terminal 300 may further include other blocks not shown in FIG. 3 or omit any block of FIG. 3.

Referring to the user terminal 300 through FIG. 3, the first wireless communication interface 301 transmits and receives a communication packet through wireless communication according to a designated wireless communication standard. For example, the first wireless communication interface 301 may transmit and receive various communication packets with the portable base station 200 through the first wireless communication network 400. The first wireless communication interface 301 outputs an antenna and a circuit for transmitting and receiving a wireless signal to the first wireless communication network 400 and an analog signal for outputting the wireless signal as an antenna and transmits the wireless signal through the antenna and the circuit. Communication chipset for capturing.

The communication chipset may transmit and receive packet data output or received as a wireless signal to the processor 311. The first wireless communication interface 301 may be connected to an IOT wireless communication network capable of long distance communication having a several Km reach and includes an antenna and a communication chipset in accordance with a narrow band-IOT, CatM1 or Lora communication technology standard. do.

GPS sensor 303 captures one or more GPS signals from GPS satellites. The GPS sensor 303 includes a GPS signal receiving chipset and an antenna to capture GPS signals transmitted from the plurality of GPS satellites, and to receive the captured time of each captured GPS signal (for example, three or more) and each GPS satellite. Estimate the position of the user terminal 300 according to the position of and output the estimated position data to the processor 311.

The proximity sensor 305 is a sensor that senses the proximity between the user of the user terminal 300 and the user terminal 300. The proximity sensor 305 may output proximity sensing data according to a change in capacitance or a change in frequency according to the distance between the user terminal 300 and the user.

The memory 307 stores various data and programs, including a nonvolatile memory and further a volatile memory. For example, the memory 307 may permanently or temporarily store current location information estimated by the GPS sensor 303, separation event information indicating a state in which the user and the user terminal 300 are currently separated, and the like. In addition, the memory 307 stores a control program executable in the processor 311 and used for tracking the location of the user. The memory 307 may further store an identifier of the user terminal 300 and an identifier of the portable base station 200 or the management terminal 100.

The identifier of the user terminal 300 is the communication address data of the user terminal 300 accessed through the first wireless communication network 400 and the identifier of the portable base station 200 is directly accessible through the first wireless communication network 400. It may be communication address data of the portable base station 200. The identifier of the management terminal 100 may be communication address data accessible from the second wireless communication network 500 of the management terminal 100 used to track the location of the user terminal 300.

The output interface 309 outputs a signal recognizable by the user. The output interface 309 may include a speaker, a buzzer, an LED, and the like to output an audio signal, a video signal, an LED signal, and / or a buzzer signal so that a user can recognize the same.

The processor 311 includes one or more execution units that execute instruction codes of a program to control the user terminal 300. The processor 311 represents or includes a microcomputer, a CPU, an MPU, a central processing unit, and the like.

The processor 311 may load a control program stored in the memory 307 to control the blocks by using an interface (for example, a parallel bus, a serial bus, or a GPIO) assigned to each block to perform a designated function. .

Looking at some of the controls in the processor 311, the processor 311 receives location data via the GPS sensor 303 and temporarily stores the received location data in the memory 307. The processor 311 generates location information indicating a current location using one or more location data and stores the location information in the memory 307. The location information may include latitude data and longitude data, and further include altitude data.

The processor 311 generates packet data including the generated current location information. The packet data may include the generated location information in the payload and include the identifier (source address) of the user terminal 300 and the identifier (destination address) of the portable base station 200 in the header of the packet data.

The processor 311 transfers the generated packet data to the first wireless communication interface 301, and the first wireless communication interface 301 communicates with the first wireless communication network 400 through the provided antenna to correspond to the packet data. Send it.

The processor 311 also receives proximity sensing data from the proximity sensor 305 and temporarily stores the received proximity sensing data in the memory 307. The processor 311 may recognize a separation event indicating that a separation state is occurring between the user and the user terminal 300 using one or more proximity sensing data stored in the memory 307.

The processor 311 that recognizes the separation event by comparing one or more proximity sensing data with the designated threshold data generates packet data including information indicating the separation event and current location information recognized by the GPS sensor 303. . The generated header of the packet data may include an identifier (source address) of the user terminal 300 and an identifier (destination address) of the portable base station 200. Separate event information and location information may be included in the payload.

The processor 311 transmits the packet data to the first wireless communication interface 301, and the first wireless communication interface 301 transmits a communication packet corresponding to the packet data to the first wireless communication network 400 through a wireless antenna. . The transmitted communication packet may be transmitted to the portable base station 200 designated in the communication packet through the first wireless communication network 400.

In addition, the user terminal 300 may further include a battery and a charging module. The battery can be, for example, a lithium ion, lithium polymer battery or any power storage medium known or known. The charging module charges the battery using power supplied via wired or wireless. Through the battery and the charging module, the user terminal 300 may stably supply power required for the processor 311, the first wireless communication interface 301, the GPS sensor 303, the proximity sensor 305, and the output interface 309. Can be.

4 is a diagram illustrating a control flow of an embodiment of tracking the location of the user terminal 300.

In the example of FIG. 4, the management terminal 100 and one portable base station 200 are connected to a local area network (for example, Bluetooth) so that the management terminal 100 is located near the one portable base station 200. An example flow for tracking the location of the terminal 300 is illustrated. 4 illustrates, for example, a leader carrying a smartphone and a portable base station 200 and remotely monitoring the location of one or more user terminals 300 through a smartphone (management terminal 100) at a specific location or on the move. An example is shown.

First, the management terminal 100, the portable base station 200, and one or more user terminals 300 set various data necessary for location tracking (see 1). In the setting process, the management terminal 100 and the portable base station 200 may be paired one-to-one with each other via a local area personal communication network, and the portable base station 200 stores identification information of the management terminal 100. The identification information of the management terminal 100 includes, for example, an identifier (eg, an address) of the management terminal 100 accessible through the second wireless communication network 500.

In addition, the portable base station 200 stores the identification information of each user terminal 300 for which location tracking is required in the storage unit 205. The identification information of the user terminal 300 includes, for example, an identifier (eg, an address) of the user terminal 300 accessible through the first wireless communication network 400. In addition, the portable base station 200 may further store setting information about a communication channel set on the first wireless communication or the second wireless communication.

In the setting process, various necessary setting data such as a transmission cycle of location information and a recognition setting of a separation event are set in the user terminal 300. The management terminal 100 and the user terminal 300 also store identification information (for example, an address recognizable by the first wireless communication network 400 or the second wireless communication network 500, etc.) for the portable base station 200. Can be. The setting process may be performed through user input from the mobile base station 200, the management terminal 100, and / or the user terminal 300.

In addition, in the setting process, the management terminal 100 may set a range in which the position of the user terminal 300 is allowed. For example, the management terminal 100 may set a specific radius, such as a radius of 100m, 300m, 500m, etc., from the location of the management terminal 100 to an allowable position range of each user terminal 300 to be managed.

As the communication channel is established with the portable base station 200, each user terminal 300 (1: N, N is an integer of 1 or more) receives location information (data of latitude and longitude) through a GPS sensor 303 provided. Create The user terminal 300 transmits a communication packet including location information to the portable base station 200 through the first wireless communication network 400 according to a transmission period, and the portable base station 200 receives it (see ②). The first wireless communication network 400 may be an IOT communication network and preferably a wireless communication network according to the NB-IOT technical standard available in the unlicensed band.

The control unit 209 of the portable base station 200 converts the communication packet from the first wireless communication network 400 into a communication packet usable in the second wireless communication network 500 (see 3). Specifically, the controller 209 of the portable base station 200 compares the source address of the header of the received communication packet with the address of the set identification information of the user terminal 300. When the same address is recognized, the control unit 209 of the portable base station 200 constructs a payload including location information of the payload of the received communication packet and identification information (identifier) of the user terminal 300. 2 generates a communication packet according to the wireless communication network (500). The generated communication packet may have an address of the portable base station 200 as a source address and an address of the management terminal 100 as a destination address.

The control unit 209 of the portable base station 200 transmits the converted communication packet including the location information of the user terminal 300 to the management terminal 100 through the second wireless communication network 500 (see ④). . The second wireless communication network 500 may be a local area personal communication network, for example, a wireless communication network according to the Bluetooth wireless standard. As described above, the first wireless communication and the second wireless communication are communication technologies for transmitting radio signals according to different wireless communication standards.

The management terminal 100 connected to the portable base station 200 receives the communication packet including the location information from each user terminal 300 through the second wireless communication network 500 and the location information and the payload of the communication packet. The identification information of the user terminal 300 is extracted to recognize the position of each user terminal 300 (see ⑤).

In addition, the management terminal 100 recognizes the location of the management terminal 100 itself. For example, the management terminal 100 may recognize latitude and longitude data of the management terminal 100 from a GPS signal through a GPS module provided to recognize its location.

The management terminal 100 displays the location of each user terminal 300 based on the recognized location of the management terminal 100 and the location of the management terminal 100 on the provided map image, and the location is displayed on the provided display. Print the map image to indicate the location of each user (see ⑥). In addition, the management terminal 100 may display a set radius range display (for example, a circular display indicating a range set around the position of the management terminal 100) on the display.

The management terminal 100 determines whether each of the user terminals 300 to be managed is within a set range (see ⑦). For example, the management terminal 100 may determine whether each user terminal 300 is within a set range by using a difference between its location and the location of each user terminal 300.

If there is a user terminal 300 outside the set range, a communication packet including an alarm message to be transmitted to the user terminal 300 and an identifier (address) of the user terminal 300 in the payload is generated and generated. The transmitted communication packet is transmitted to the portable base station 200 through the second wireless communication network 500 (see ⑧). The transmitted alarm message includes data output through the output interface 309 of the user terminal 300.

The control unit 209 of the portable base station 200 (receiving a communication packet through the second wireless communication network 500) extracts a source address from a header of the communication packet, and the extracted source address is an identifier of the management terminal 100. Address) is determined by comparing with the identification information of the management terminal 100 of the storage unit 205.

When the source address is the identifier of the management terminal 100, the portable base station 200 (control unit 209) converts the received communication packet into a communication packet transmitted and received via the first wireless communication network 400 (see ⑨). . For example, the controller 209 of the portable base station 200 sets the identifier of the user terminal 300 of the received communication packet as the destination address of the header of the converted communication packet and sets the source address to the portable base station 200. Set to the address of and create a communication packet containing the alarm message received in the payload.

The control unit 209 of the portable base station 200 transmits the generated communication packet including the alarm message to the user terminal 300 designated as the destination address of the header through the first wireless communication network 400 (see 400). do. The processor 311 of the user terminal 300 receives the communication packet through the first wireless communication network 400 and communicates through the output interface 309 when the destination address of the received communication packet matches its own address. The alarm message of the packet is output as an alarm signal such as an audio signal.

The management terminal 100 having a one-to-one communication channel established through the local personal communication network estimates a relative distance from the portable base station 200 (see ⑪). Estimation of the relative distance may be made from a communication packet of the second wireless communication network 500 received from the portable base station 200 and may be made using, for example, the signal strength of the communication packet.

For example, the management terminal 100 determines whether the signal strength of the communication packet received from the portable base station 200 (or the signal strength average of the plurality of received communication packets) is greater than or equal to a set threshold. If the signal strength of the received communication packet is greater than or equal to the set threshold, the management terminal 100 may determine that the relative distance to the portable base station 200 is within a set distance according to the set threshold. If the signal strength is less than the set threshold, the management terminal 100 may determine that the portable base station 200 is separated by more than the set distance.

If the estimated relative distance is greater than or equal to the specified distance, the management terminal 100 outputs an alarm signal. For example, when recognizing a signal strength below the set threshold, the management terminal 100 outputs a signal (audio or video signal) indicating that the portable base station 200 is separated by a threshold distance or more with a provided display or speaker. In addition, the portable base station 200 may configure a communication packet including an alarm message and output the communication packet through the second wireless communication network 500.

The portable base station 200 receiving the communication packet may convert the included alarm message into an audio signal and output the same through a speaker or buzzer. Accordingly, the portable base station 200 and the management terminal 100 can be maintained within a certain distance to track the location of each user terminal 300 in a state where the communication connection is maintained stable.

The communication packet used to estimate the distance of the portable base station 200 may be any communication packet received from the portable base station 200. Such a communication packet may be, for example, a communication packet including location information (for example, a communication packet of ④) or a dedicated communication packet for maintaining a connection of a communication channel between the management terminal 100 and the portable base station 200. Can be.

Meanwhile, the processor 311 of the user terminal 300 may recognize (see ⑫) occurrence of a separation event of the user terminal 300 from the user through the proximity sensor 305 provided. The processor 311 of the user terminal 300 may recognize the occurrence of a separation state between the user and the user terminal 300 using the proximity sensing data from the proximity sensor 305.

The processor 311 of the user terminal 300 (recognizing the separation event) configures a communication packet including current location information determined by the GPS sensor 303 and separation event information indicating the separation event in the payload. The header of the generated communication packet includes an identifier (source address) of the user terminal 300 and an identifier (destination address) of the portable base station 200, and the separated event information and the location information are included in the payload.

The processor 311 of the user terminal 300 transmits a communication packet including the separated event information and the location information to the portable base station 200 through the first wireless communication network 400 (see ⑬).

The portable base station 200 (controller 209 of) receiving the communication packet through the first wireless communication network 400 compares the source address of the communication packet with the identifier of the user terminal 300 of the storage unit 205 to the source When the address is an identifier of the user terminal 300, the received communication packet is converted into a communication packet to be transmitted through the second wireless communication network 500 (see ⑭). The converted communication packet includes separate event information, location information, and an identifier of the user terminal 300 in the payload, a destination address is set as an address of the management terminal 100, and a source address is set as an address of the portable base station 200. do.

The control unit 209 of the portable base station 200 transmits the converted communication packet including the separated event information and the location information to the management terminal 100 through the second wireless communication network 500 (see ⑮).

The management terminal 100 may generate an alarm message corresponding to the user terminal 300 according to the received separation event information and transmit the generated alarm message through the portable base station 200.

The management terminal 100, the portable base station 200, and the user terminal 300 may repeatedly perform a control flow (② to ⑮) after setting for location recognition and management. Here, although the reception event (see ②) of the location information has been described as occurring according to the set transmission period, as a modified example, it may also occur according to the location information transmission request from the management terminal 100.

In addition, the management terminal 100 may change the setting range dynamically and generate an alarm message according to the dynamically changed setting range and output the generated alarm message to the user terminal 300. The alarm message may be voice data input from a microphone provided in the management terminal 100 or voice data that is preset and stored. In addition, the management terminal 100 may transmit various voices or guidance messages to the user terminal 300 as necessary.

5 is a diagram illustrating a control flow of another embodiment for tracking the location of the user terminal 300.

5 illustrates an example in which the management terminal 100 tracks and manages a location by grouping the user terminals 300 by one or more portable base stations 200. The example of FIG. 5 shows an example in which a large number of persons can be remotely managed by groups, for example, in which a target person can be recognized and managed in a large area. Each portable base station 200 and the management terminal 100 may transmit and receive communication packets through a broadband communication network (for example, a mobile communication network). 5 illustrates an example of a mobile communication network such as CDMA, GSM, LTE, etc., in which the second wireless communication network 500 between the management terminal 100 and the portable base station 200 is used.

Since the main flow has already been described in detail with reference to FIG. 4, the following description will focus on the differences.

First, the management terminal 100, at least one portable base station 200 (M, M is an integer of 1 or more) and at least one user terminal 300 sets a variety of data (see ①). In the setting process, the portable base station 200 stores identification information of the management terminal 100. The identification information of the management terminal 100 includes, for example, an identifier (eg, an IP address and / or a mobile phone number) of the management terminal 100 accessible through the second wireless communication network 500. In addition, each of the portable base stations 200 stores identification information of each user terminal 300 for which location tracking is required in the storage unit 205. The identification information of the user terminal 300 includes, for example, an identifier (eg, an address) of the user terminal 300 accessible through the first wireless communication network 400. In addition, the portable base station 200 may further store setting information about a communication channel set on the first wireless communication or the second wireless communication.

In the setting process, various necessary setting data such as a transmission cycle of location information and a recognition setting of a separation event are set in the user terminal 300. The management terminal 100 and the user terminal 300 also store identification information (for example, an address recognizable in the first wireless communication network 400 or the second wireless communication network 500, etc.) for the portable base station 200. Can be. The setting process may be performed through user input from the mobile base station 200, the management terminal 100, and / or the user terminal 300.

In the setting process, the management terminal 100 may set an allowable range for each user terminal 300 group corresponding to the portable base station 200. For example, the management terminal 100 may set a specific radius, such as a radius of 100m, 300m, 500m, etc., from the location of each portable base station 200 as an allowable position range of each user terminal 300 to be managed.

In addition, the management terminal 100 may set the boundary range of the portable base station 200 or the user terminal 300. The boundary range consists of a specific position range and can be set to a radius from any center point or to a rectangular position range. The boundary range may indicate a limit range in which all the portable base station 200 and the user terminal 300 should not deviate. Meanwhile, the allowable range described above may represent a range between the set portable base station 200 and the user terminal 300.

Through the setting process, one or more user terminals 300 may be mapped to one portable base station 200, and one or more user terminals 300 may be mapped to another portable base station 200. Such a mapping relationship may be recorded and stored by the management terminal 100 and manages a specific user terminal 300 in a specific user (base station) group by using the identifier of the user terminal 300 and the identifier of the portable base station 200. 100 can be specified.

As the communication channel with the designated portable base station 200 is established, each user terminal 300 (1: N, N is one or more testes) is provided with position information (latitude and longitude data) through the GPS sensor 303 provided. Generates and transmits a communication packet including location information to the portable base station 200 through the first wireless communication network 400 according to a transmission period, and the portable base station 200 receives it (see ②).

The control unit 209 of the portable base station 200 converts the communication packet from the first wireless communication network 400 into a communication packet usable in the second wireless communication network 500 (see 3). Specifically, the controller 209 of the portable base station 200 compares the source address of the header of the received communication packet with the address of the set identification information of the user terminal 300, and when the same address is recognized, the portable base station 200 The control unit 209 of the base station 200 (payload) further includes the position information of the payload of the received communication packet and the identification information (identifier) of the user terminal 300 and further the position information of the portable base station 200. And generates a communication packet according to the second wireless communication network 500. The generated communication packet may have an address of the portable base station 200 as a source address and an address of the management terminal 100 as a destination address.

The control unit 209 of the portable base station 200 transmits the converted communication packet including the location information of the user terminal 300 and the portable base station 200 to the management terminal 100 through the second wireless communication network 500. Transfer (see ④). The second wireless communication network 500 may be a broadband mobile communication network.

The management terminal 100 (for example, the stationary management terminal 100) connected to the portable base station 200 by the second wireless communication network 500 may include location information from each user terminal 300 and the portable base station 200. A communication packet including the location information is received through the second wireless communication network 500. The management terminal 100 extracts two location information and an identifier of the user terminal 300 from the payload of the communication packet and extracts an identifier of the portable base station 200 from the communication packet to each user terminal 300 for each of the portable base station 200. ) Position (see ⑤).

The management terminal 100 displays the position of each user terminal 300 for each of the portable base stations 200 on the provided map on the display provided (see 6). In addition, the management terminal 100 may display the set radius range display (for example, a circular display indicating a range set around the position of the portable base station 200) and the boundary range on the display.

The management terminal 100 determines whether each of the user terminals 300 to be managed is within a set range (see ⑦). For example, the management terminal 100 determines whether each of the user terminals 300 for each user group of each portable base station 200 is located within a set allowable range. The management terminal 100 may determine whether the portable terminal 200 is within an allowable range set around the portable base station 200 by using a difference between the location information of the portable base station 200 and the location information of the user terminal 300. In addition, (or), the management terminal 100 determines whether each user terminal 300 and the portable base station 200 is within the set boundary range. For example, the management terminal 100 may determine whether the location information of each user terminal 300 or the location information of the portable base station 200 is within a set boundary range (for example, a rectangular location region range).

When any user terminal 300 is out of the set allowable range, a communication packet including an alarm message to be transmitted to the user terminal 300 and an identifier of the user terminal 300 in the payload is generated, and the generated communication packet is generated. It transmits (see ⑧) to the portable base station 200 corresponding to the corresponding user terminal 300 through the second wireless communication network 500. The transmitted alarm message includes data output through the output interface 309 of the user terminal 300.

In addition, when any user terminal 300 or the portable base station 200 is out of the boundary range, the payload and the alarm message to be transmitted to the user terminal 300 or the portable base station 200 and further, the identifier of the user terminal 300 payload It generates a communication packet included in and transmits the generated communication packet to the portable base station 200 through the second wireless communication network 500 (see ⑧). The transmitted alarm message may be output as an alarm signal through the user terminal 300 or the portable base station 200.

The control unit 209 of the portable base station 200 (receiving a communication packet through the second wireless communication network 500) may output an alarm message delivered to the portable base station 200. Alternatively, the controller 209 of the portable base station 200 (recognizing that the alarm message is transmitted to the user terminal 300 connected to the portable base station 200) receives the received communication packet through the first wireless communication network 400. Converts into communication packets that are sent and received (see ⑨).

For example, the control unit 209 of the portable base station 200 sets the identifier of the user terminal 300 of the received communication packet payload as the destination address of the header of the converted communication packet and sets the source address to the portable base station ( Set to the address 200 and generate a communication packet including the alarm message received in the payload. The identifier of the user terminal 300 is compared with the identification information of the user terminal 300 of the storage unit 205 so that the alarm message can be transmitted only to the user terminal 300 connected in the portable base station 200.

The control unit 209 of the portable base station 200 transmits the generated communication packet including the alarm message to the user terminal 300 designated as the destination address of the header through the first wireless communication network 400 (see ⑩). .

The processor 311 of the user terminal 300 receives the communication packet through the first wireless communication network 400 and communicates through the output interface 309 when the destination address of the received communication packet matches its own address. The alarm message of the packet is output as an alarm signal such as an audio signal.

Meanwhile, the processor 311 of the user terminal 300 may recognize (see ⑪) occurrence of a separation event of the user terminal 300 from the user through the proximity sensor 305 provided. The processor 311 of the user terminal 300 may recognize the occurrence of a separation state between the user and the user terminal 300 using the proximity sensing data from the proximity sensor 305.

The processor 311 of the user terminal 300 (recognizing the separation event) configures a communication packet including current location information determined by the GPS sensor 303 and separation event information indicating the separation event in the payload. The header of the generated communication packet includes an identifier (source address) of the user terminal 300 and an identifier (destination address) of the portable base station 200, and the separated event information and the location information are included in the payload.

The processor 311 of the user terminal 300 transmits a communication packet including the separated event information and the location information to the portable base station 200 through the first wireless communication network 400 (see ⑫).

The portable base station 200 (controller 209 of) receiving the communication packet through the first wireless communication network 400 compares the source address of the communication packet with the identifier of the user terminal 300 of the storage unit 205 to the source When the address is an identifier of the user terminal 300 in the user group, the received communication packet is converted into a communication packet to be transmitted through the second wireless communication network 500 (see ⑬). The converted communication packet includes separate event information, location information, and an identifier of the user terminal 300 in the payload, a destination address is set as an address of the management terminal 100, and a source address is set as an address of the portable base station 200. do.

The control unit 209 of the portable base station 200 transmits the converted communication packet including the separated event information, the location information, and the identifier of the user terminal 300 to the management terminal 100 through the second wireless communication network 500. Send (see ⑭).

The management terminal 100 may generate an alarm message corresponding to the user terminal 300 according to the received separation event information and transmit the generated alarm message through the portable base station 200.

The management terminal 100, the portable base station 200, and the user terminal 300 may repeatedly perform a control flow (② to ⑭) after setting for location recognition and management. Here, although the reception event (see ②) of the location information has been described as occurring according to the set transmission period, as a modified example, it may also occur according to the location information transmission request from the management terminal 100.

In the example of FIG. 5, the management terminal 100 may wirelessly communicate with the plurality of portable base stations 200 through the second wireless communication. In addition, the management terminal 100 is configured to enable and control the location of the user terminal 300 and the portable base station 200 for each user (base station) group accessible to each portable base station 200.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

100: management terminal
200: portable base station
201: first wireless communication unit 203: second wireless communication unit
205: storage unit 207: connection unit
209: control unit
300: user terminal
301: first wireless communication interface 303: GPS sensor
305: proximity sensor 307: memory
309: output interface 311: processor
400: first wireless communication network
500: second wireless communication network

Claims (10)

Receiving, by the portable base station, the first communication packet including the location information from the connected one or more user terminals through the first wireless communication; And
And converting, by the portable base station, the first communication packet into a second communication packet according to a second wireless communication, and transmitting the second communication packet to a management terminal through a second wireless communication.
The first wireless communication and the second wireless communication is a communication technology for transmitting a radio signal according to a different wireless communication standard,
Location tracking method. The method of claim 1,
The management terminal recognizing a location of each user terminal from the second communication packet through the second wireless communication; And
And displaying, by the management terminal, the location of each recognized user on the display.
Location tracking method. The method of claim 2,
Determining, by the management terminal, whether the location of each user terminal is within a set range;
Transmitting, by the management terminal, a second communication packet including an alarm message to the user base station outside the set range to the portable base station through the second wireless communication; And
Transmitting, by the portable base station, the first communication packet including the alarm message to the user terminal through first wireless communication;
The first wireless communication is a wireless communication technology according to the IOT communication standard and the second wireless communication is a wireless communication technology according to a local personal communication network,
Location tracking method. The method of claim 2,
Estimating, by a management terminal, a relative distance to the portable base station through a second wireless communication; And
If the estimated relative distance is more than the specified distance, the management terminal outputs an alarm signal; further comprising,
Location tracking method. The method of claim 2,
Recognizing, by the user terminal, a separation event;
When the separation event occurs, transmitting, by the user terminal, a first communication packet including the separation event information and the location information to the portable base station through the first wireless communication; And
And converting, by the portable base station, the first communication packet into a second communication packet including the separated event information and the location information and transmitting the second communication packet to the management terminal through the second wireless communication.
Location tracking method. The method of claim 2,
The first wireless communication is a communication technology according to a narrowband IOT technology standard used in an unlicensed band, and the second wireless communication is a mobile communication technology used in a mobile phone,
The management terminal is capable of wirelessly communicating with a plurality of portable base stations through a second wireless communication and capable of locating and controlling each user group accessible by each portable base station,
Location tracking method. A location tracking system comprising;
The portable base station
A first wireless communication unit for transmitting and receiving a first communication packet through first wireless communication;
A second wireless communication unit for transmitting and receiving a second communication packet through a second wireless communication; And
Receiving first packet data including location information from a user terminal extracted from a first communication packet through the first wireless communication unit, and receiving the second packet data including the location information and an identifier of the user terminal. And a control unit which transmits a second communication packet including the second packet data through a second wireless communication by transmitting to a wireless communication unit.
The first wireless communication and the second wireless communication is a communication technology for transmitting a radio signal according to a different wireless communication standard,
Location tracking system. The method of claim 7, wherein
And a management terminal recognizing a location of each user terminal from a second communication packet through second wireless communication and displaying a location of a user corresponding to each recognized user terminal on a display.
Location tracking system. The method of claim 8,
The management terminal determines whether the location of each user terminal is within a set range through the received second communication packet, and transmits a second communication packet including an alarm message to the user terminal outside the set range through a second wireless communication. To,
The control unit of the portable base station receives the second packet data extracted from the second communication packet and includes an alarm message from the second wireless communication unit and receives the first packet data including the alarm message and an identifier of a user terminal. 1 transmits to the wireless communication unit a first communication packet including the first packet data through a first wireless communication,
The first wireless communication is a wireless communication technology according to the IOT communication standard and the second wireless communication is a wireless communication technology according to a local personal communication network,
Location tracking system. The method of claim 8,
Further comprising; a user terminal connected to the first wireless communication,
When the user terminal recognizes the separation event using the proximity sensor provided, the user terminal transmits a first communication packet including the separation event information and the location information recognized by the GPS sensor to the portable base station through the first wireless communication,
The portable base station converts the first communication packet into a second communication packet including separated event information and location information, and transmits the converted first communication packet to a management terminal through a second wireless communication.
Location tracking system.

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