KR102405467B1 - System and method for tracking quarantine using broadcasting signal of wifi ap - Google Patents

Abstract

Disclosed are a quarantine tracking system and method using a broadcast signal of a WIFI AP. A quarantine tracking method performed in a quarantine tracking system according to an embodiment includes: acquiring AP information collected through reception of signal information broadcast from a plurality of communication devices in an electronic device; and tracking the movement route information of the target electronic device using AP information in the same time zone as the electronic device for which the movement route tracking is requested based on the obtained AP information.

Description

SYSTEM AND METHOD FOR TRACKING QUARANTINE USING BROADCASTING SIGNAL OF WIFI AP

The description below relates to a technology for tracking a moving line using signal information.

In general, infectious diseases refer to diseases that are contagious among diseases. Such an infectious disease is a disease caused by a specific pathogen or a toxic substance of a pathogen, and refers to a disease that is transmitted from an infected person to a susceptible host (human). There are various methods of transmission of infectious diseases, such as person-to-person contact, food or drinking water, insect vectors, and transmission from animals to humans.

The incidence of new/variant respiratory infections with high contagious power or pathogenicity, such as swine influenza, H5N1 highly pathogenic avian influenza, and MERS, is increasing significantly. For example, in infectious diseases such as the first swine influenza in the 21st century, the influenza virus, a pathogen, spreads into the air and enters the human body with breathing. Influenza has a high fatality rate and is highly contagious, and there is a possibility of the emergence of a malignant strain, and it is difficult to predict accurately because the mutation is severe.

In addition, the novel coronavirus (COVID-19) is currently in a global pandemic, recording an unprecedented number of confirmed cases. As the number of confirmed cases increases explosively, countries are preparing measures to prevent further spread, but they are not effective enough. The reason that these infectious diseases spread easily is that the symptoms of infectious diseases are very similar to common cold symptoms, and in most cases, infected people continue their daily lives without realizing that they are infected with the infectious disease. The infection rate is remarkably high.

Accordingly, in order to prevent the spread of infectious diseases, it is essential not only to quarantine the confirmed person itself, but also to quickly identify the contacts who have come into contact with the confirmed person, and to take quarantine measures for the contacts.

However, in the case of a traditional epidemiological investigation of an infectious disease, in order to track the contact, the CCTV usually included in the movement path of the infected person is analyzed or the movement path of the infected person is identified by inquiring the patient's credit card payment information, etc. Since the contacts are tracked by a method of finding the contacts one by one, it takes a lot of time to track the correct contacts, and there are problems in that the accuracy is lowered.

Publication No. 10-2017-0053145 (May 15, 2017), Publication No. 10-2020-0047457 (May 7, 2020), Publication No. 10-2018-0071095 (June 27, 2018)

It is possible to provide a system and method for tracking quarantine using a broadcast signal of a WIFI AP.

A quarantine tracking method performed in a quarantine tracking system includes: acquiring AP information collected through reception of signal information broadcast from a plurality of communication devices in an electronic device; and tracking the movement route information of the target electronic device using AP information in the same time zone as the electronic device for which the movement route tracking is requested based on the obtained AP information.

In the tracking of the movement line information, the reception signal strength of the electronic device for which the movement line tracking is requested and the reception of the target electronic device in the same Wi-Fi AP included in the AP information in the same time zone as the electronic device for which the movement line tracking is requested A first index value is obtained through a difference in signal strength values, a second index value is obtained by summing the first index values for each time period, and a third index value is obtained by summing the second index values for all Wi-Fi APs for each time period. The method may include obtaining a value and determining that the target electronic device has contacted the electronic device for which the movement line tracking is requested when the obtained third index value is equal to or less than a preset value.

In the tracking of the movement line information, the received signal strength included in the AP information of the same time zone as the electronic device for which the movement line tracking is requested is converted into distance information, and the target electronic device is transmitted using the converted distance information. The method may include correcting a tracking contact degree with the electronic device for which movement tracking is requested.

In the tracking of the movement line information, when the received signal strength for a specific AP is not present in the electronic device or the target electronic device for which the movement line tracking is requested in the AP information of the same time zone as the electronic device for which the movement line tracking is requested, The method may include correcting a tracking contact degree with the electronic device for which the movement line tracking of the target electronic device is requested by replacing it with a preset received signal strength value.

The acquiring may include receiving, in the electronic device, Wi-Fi signal information broadcast from the WLAN AP, and using the received Wi-Fi signal information, a Wi-Fi signal generation time of the WLAN AP, and the The method may include acquiring AP information including at least one of a MAC address, a Wi-Fi SSID, a received signal strength indication, or an app identification information (App ID) that provides a quarantine tracking service. .

By using Wi-Fi AP information, which is unspecified majority access information, it is possible to protect personal information because it tracks the movement of subjects who exist in the same time zone as the confirmed patient.

The spread of infectious diseases can be prevented by quickly and accurately extracting contacts who have come into contact with a confirmed person through tracking the movement of those who exist in the same time zone as the confirmed person by using the Wi-Fi AP information, which is the unspecified majority access information.

Accuracy can be improved by estimating detailed movement routes and contact information of confirmed cases and contacts using AP information in the same time zone with the confirmed cases, and correcting the estimation results.

1 is a diagram illustrating an example of a network environment according to an embodiment.
2 is a block diagram illustrating the configuration of a quarantine tracking system according to an embodiment.
3 is a flowchart for explaining a method for tracking a quarantine in the quarantine tracking system according to an embodiment.
4 is an example for explaining an operation of tracking quarantine using a broadcast signal of a Wi-Fi AP in the quarantine tracking system according to an embodiment.
5 is an example for explaining an operation of determining movement line information in the quarantine tracking system according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating an example of a network environment according to an embodiment.

The network environment of FIG. 1 shows an example including the quarantine tracking system 100 , the electronic device 110 , and the network 120 . 1 is an example for explaining the invention, and the number of electronic devices or the number of servers is not limited as in FIG. 1 .

The electronic device 110 may be a fixed terminal implemented as a computer device or a mobile terminal. Examples of the electronic device 110 include a smart phone, a mobile phone, a navigation system, a computer, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a tablet PC, and the like. For example, the electronic device 110 may communicate with other user terminals and/or the quarantine tracking system 100 through the network 120 using a wireless or wired communication method.

The communication method is not limited, and not only a communication method using a communication network (eg, a mobile communication network, a wired Internet, a wireless Internet, a broadcasting network) that the network 120 may include, but also short-range wireless communication between devices may be included. For example, the network 120 may include a personal area network (PAN), a local area network (LAN), a campus area network (CAN), a metropolitan area network (MAN), a wide area network (WAN), and a broadband network (BBN). , the Internet, and the like. In addition, the network 120 may include any one or more of a network topology including a bus network, a star network, a ring network, a mesh network, a star-bus network, a tree or a hierarchical network, etc. not limited

The quarantine tracking system 100 may be implemented as a computer device or a plurality of computer devices that communicates with the electronic device 110 and the network 120 to provide commands, codes, files, contents, services, and the like. In this case, the quarantine tracking system 100 may be implemented as a server. For example, the quarantine tracking system 100 may provide a file for installing an application to the electronic device 110 accessed through the network 120 . In this case, the electronic device 110 may install the application using the file provided from the quarantine tracking system 100 . In addition, by accessing the quarantine tracking system 100 under the control of an operating system (OS) included in the electronic device 110 or at least one program (eg, a browser or the installed application), the quarantine tracking system 100 is You can receive the services or contents provided. For example, when the electronic device 110 transmits a service request message to the quarantine tracking system 100 through the network 120 under the control of an application, the quarantine tracking system 100 generates a code corresponding to the service request message. The content may be transmitted to the electronic device 110 , and the electronic device 110 may provide content to the user by composing and displaying a screen according to the code according to the control of the application. As another example, the quarantine tracking system 100 may establish a communication session for a messaging service and route message transmission and reception between a plurality of terminals through the established communication session.

FIG. 2 is a block diagram illustrating a configuration of a quarantine tracking system according to an embodiment, and FIG. 3 is a flowchart illustrating a method for tracking a quarantine in the quarantine tracking system according to an embodiment.

The processor of the quarantine tracking system 100 may include an information acquisition unit 210 and a movement tracking unit 220 . These components of the processor may be representations of different functions performed by the processor according to a control instruction provided by a program code stored in the quarantine tracking system. The processor and components of the processor may control the quarantine tracking system to perform steps 310 to 320 included in the quarantine tracking method of FIG. 3 . In this case, the processor and the components of the processor may be implemented to execute instructions according to the code of the operating system included in the memory and the code of at least one program.

The processor may load the program code stored in the file of the program for the quarantine tracking method into the memory. For example, when a program is executed in the quarantine tracking system 100 , the processor may control the quarantine tracking system 100 to load a program code from a program file into the memory according to the control of the operating system. At this time, each of the processor and the information obtaining unit 210 and the moving line tracking unit 220 included in the processor executes the instruction of the corresponding portion of the program code loaded in the memory to execute the subsequent steps 310 to 320. They may be different functional representations of the processor.

In step 310 , the information acquisition unit 210 may acquire AP information collected through reception of signal information broadcast from a plurality of communication devices in the electronic device. The information obtaining unit 210 receives Wi-Fi signal information broadcast from the wireless LAN AP in the electronic device, and through the received Wi-Fi signal information, the Wi-Fi signal generation time of the WLAN AP and the MAC of the WLAN AP AP information including at least one of an address (Mac Address), a Wi-Fi SSID, a received signal strength indication, or an app identification information (App ID) providing a quarantine tracking service may be acquired.

In step 320, the movement tracking unit 220 may track the movement information of the target electronic device using AP information of the same time zone as the electronic device for which the movement is requested based on the obtained AP information. The movement tracking unit 220 determines the value of the received signal strength of the electronic device requested to track the movement in the same Wi-Fi AP and the received signal strength of the target electronic device included in the AP information of the same time zone as the electronic device for which the movement is requested. A first index value is obtained through the difference, a second index value is obtained by summing the first index values for each time period, and a third index value is obtained by summing the second index values for all Wi-Fi APs by time period, When the obtained third index value is less than or equal to a preset value, it may be determined that the target electronic device has contacted the electronic device for which the movement line tracking is requested. The movement tracking unit 220 converts the received signal strength included in the AP information of the same time zone as the electronic device for which the movement line tracking is requested into distance information, and uses the converted distance information to request the movement line tracking for the target electronic device. The degree of tracking contact with the electronic device may be corrected. When the received signal strength for a specific AP does not exist in the electronic device or the target electronic device for which the movement line tracking is requested in the AP information of the same time zone as the electronic device for which the movement line tracking unit 220 is requested, the received signal strength is set. By substituting the intensity value, the tracking contact degree with the electronic device for which the motion tracking of the target electronic device is requested may be corrected.

4 is an example for explaining an operation of tracking quarantine using a broadcast signal of a Wi-Fi AP in the quarantine tracking system according to an embodiment.

In the embodiment, an example in which the quarantine tracking system operates in the form of an application that provides a quarantine tracking service of the electronic device 110 will be described. As the application providing the quarantine tracking service is installed on the electronic device 110 , the quarantine tracking service may be executed.

A signal may be broadcast from a plurality of communication devices 411 , 412 , 413 . In an embodiment, a Wi-Fi signal may be broadcast from the WLAN AP. In FIG. 4 , the existence of the first Wi-Fi AP 411 , the second Wi-Fi AP 412 , and the third Wi-Fi AP 413 will be described as an example.

For example, the quarantine tracking system may receive Wi-Fi signal information broadcast from the Wi-Fi APs 411 , 412 , and 413 through the electronic device 110 . In this case, the electronic device 110 may receive Wi-Fi signal information broadcast from all Wi-Fi APs within a reception range capable of receiving Wi-Fi signal information. In addition, the electronic device 110 may receive signal information through a Bluetooth signal transmitted and received between the electronic devices.

The quarantine tracking system may collect AP information included in the Wi-Fi signal information received from the electronic device 110 . For example, the AP information includes the Wi-Fi signal generation time of the Wi-Fi AP through the Wi-Fi signal information received from the Wi-Fi AP, the MAC address of the Wi-Fi AP, the Wi-Fi SSID, Received Signal Strength Indication, or quarantine tracking. It may include at least one of app identification information (App ID) that provides a service. In this case, a unique ID may be used instead of the MAC address of the Wi-Fi AP. The unique ID may be derived through (Wi-Fi AP MAC information) * (Time information). The quarantine tracking system may store AP information collected through the electronic device 110 in a database. In this case, when the AP information collected through the electronic device 110 is changed, the quarantine tracking system may update the database with the changed AP information.

The quarantine tracking system may transmit the AP information collected by the electronic device 110 to a government agency server in real time or periodically. The government agency server may accumulate AP information transmitted through the electronic device 110 in a database. In addition, the government server may directly or indirectly analyze movement route information of another electronic device related to the electronic device for which movement route tracking is requested by using the AP information transmitted in real time or periodically from the electronic device 110 . For example, the government server uses the AP information transmitted through the electronic device 110 to track the movement of a target electronic device that has a Wi-Fi AP information reporting history in the same time zone as the electronic device for which the movement is requested. can do. Alternatively, the government agency server may request the quarantine tracking system to track the movement of another electronic device related to the electronic device for which the movement is requested. For example, the government agency server requests the quarantine tracking system to track the movement of another electronic device that has a history of Wi-Fi AP information in the same time zone as the electronic device for which the movement is requested by using the AP information transmitted from the electronic device 110 . can

The quarantine tracking system may track the movement route information of the target electronic device using AP information in the same time zone as the electronic device for which the movement route tracking is requested based on the collected AP information. For example, the quarantine tracking system may track the movement route information of the target electronic device using the MAC address and received signal strength of the Wi-Fi AP included in AP information of the same time zone as the electronic device for which the movement route tracking is requested.

Specifically, the quarantine tracking system may track the movement of a target electronic device that has a history of reporting Wi-Fi AP information in the same time zone as the electronic device for which the movement is requested. For example, the quarantine tracking system can use one or more data included in AP information in the same time zone as the electronic device for which the movement tracking is requested to search for a target electronic device that existed in the same or near as the electronic device for which the movement was requested. can The quarantine tracking system can estimate distance information by using the received signal strength of each electronic device (the electronic device requested to track the movement and the target electronic device) included in the AP information in the same time zone as the electronic device for which the movement is requested. have. For example, each electronic device may have different received signal strength of Wi-Fi signal information broadcast from a plurality of Wi-Fi APs according to the location of the electronic device. In this way, the quarantine tracking system may estimate distance information between the electronic device and each Wi-Fi AP according to the received signal strength, and calculate the final location data of the electronic device based on the estimated distance information between the electronic device and each Wi-Fi AP. can be derived For example, the quarantine tracking system may estimate the relative distance according to the received signal strength to estimate distance information from each Wi-Fi AP in the electronic device, and estimate the relative position of the electronic device based on the estimated relative distance. have.

The quarantine tracking system may estimate the detailed movement or contact degree of the target electronic device through estimation of the relative position of the electronic device using the positioning technique. For example, the quarantine tracking system may estimate the relative position of the electronic device for which the movement is requested and another electronic device by using the received signal strength included in AP information in the same time zone as the electronic device for which the movement is requested. In this way, the quarantine tracking system may determine the degree of contact, such as whether or how much contact has been made with the electronic device for which the movement line tracking is requested, through the relative position estimated using the received signal strength. In addition, the quarantine tracking system can acquire detailed movement lines by continuously tracking the estimated relative position using the received signal strength.

Since the quarantine tracking system according to an embodiment uses Wi-Fi AP information, which is unspecified multiple access information, to track the movement of the electronic device, it is possible to solve the problem of personal information and protect privacy.

The quarantine tracking system according to an embodiment may estimate the distance between the electronic device for which the movement line tracking is requested and the target electronic device by using the relative distance according to the strength of the received signal. Moreover, it is possible to estimate the detailed movement line and the degree of contact through the relative position estimation using the positioning technique.

5 is an example for explaining an operation of determining movement line information in the quarantine tracking system according to an embodiment.

In the embodiment, an operation of tracking the movement information of the subject 501 associated with the confirmed patient 500 will be described. Accordingly, the users shown in FIG. 5 will be described separately from the confirmed case 500 and the subject 501 . The movement of the confirmed patient 500 and the subject 501 may be tracked using the electronic device. At this time, if it is determined that the subject 501 has the same movement as the confirmed person 500 through the result of tracking the movement information using the AP information in the same time zone as the confirmed person 500, the subject 501 is the confirmed person. It can be changed to a contact of 500.

In advance, the quarantine tracking system may receive Wi-Fi signal information broadcast from a plurality of Wi-Fi APs 411 , 412 , 413 through each electronic device. The quarantine tracking system may acquire collected AP information through the received Wi-Fi signal information. In this case, the acquired AP information provides the Wi-Fi signal generation time of the Wi-Fi AP, the Mac address of the Wi-Fi AP, the Wi-Fi SSID, the received signal strength indication, or the quarantine tracking service through the received Wi-Fi signal information. and may include at least one of app identification information (App ID).

The quarantine tracking system may track the movement route information of the subject 501 using AP information in the same time zone as the confirmed patient 500 based on the acquired AP information. At this time, at least one or more AP data may be used among the AP information, but in the embodiment, tracking the movement information of the subject 501 using the MAC address and received signal strength of the WLAN AP will be described.

The AP information collected from the confirmed patient 500 will be described. In the AP information collected from the confirmed patient 500 , the received signal strength of time A, the received signal strength of time B, and the received signal strength of time C for the first Wi-Fi AP 411 may exist. In addition, in the AP information collected from the confirmed patient 500 , the received signal strength of the second Wi-Fi AP 412 in time B and the received signal strength in time C may exist. In addition, in the AP information collected from the confirmed patient 500 , the received signal strength of the third Wi-Fi AP 413 in time B and the received signal strength in time C may exist. The AP information of the confirmed patient 500 collected in this way can be shown in Table 1.

Table 1:

Similarly, the AP information collected from the subject 501 will be described. In the AP information collected from the subject 501 , the received signal strength of time A for the first Wi-Fi AP 411 , the received signal strength of time B, and the received signal strength of time C may exist. In addition, in the AP information collected from the subject 501 , the received signal strength of the second Wi-Fi AP 412 , the received signal strength of the B time zone, and the received signal strength of the C time zone may be present. In addition, in the AP information collected from the subject 501 , the received signal strength of time A, the received signal strength of time B, and the received signal strength of time C for the third Wi-Fi AP 413 may be present. The AP information of the subject 501 collected in this way may be shown in Table 2.

Table 2:

The quarantine tracking system may track the movement information of the confirmed person 500 or the subject 501 using AP information in the same time zone as the confirmed person 500 based on the acquired AP information. The quarantine tracking system may determine the degree of tracking contact by comparing the strength of the received signal included in the AP information in the same time zone as the confirmed person 500 .

Specifically, the quarantine tracking system uses the difference between the received signal strength values for the electronic devices of the confirmed case 500 and the subject 501 from the same Wi-Fi AP included in the AP information in the same time zone as the confirmed case 500 . A first index value may be obtained. For example, the first index value may mean a difference in received signal strength values of respective electronic devices in the same AP in the same time zone. Referring to Tables 1 and 2, the quarantine tracking system may obtain the first index value by calculating the difference between the values of the RSSI a1 of the confirmed patient and the RSSI a1' of the subject in the first Wi-Fi AP 411 . The closer the obtained first index value is to 0, the closer the distance between the confirmed patient 500 and the subject 501 is. In this case, the first index value may be calculated as an absolute value.

In addition, the quarantine tracking system adds up the first index value obtained through the difference in the received signal strength value for the subject 501 from the same Wi-Fi AP included in the AP information in the same time zone as the confirmed person 500 to obtain the second The index value can be obtained. In other words, the second index value may be derived through the sum of all the first index values for each time period. For example, when there are a plurality of subjects, the second index value may be obtained by summing the respective first index values.

In addition, the quarantine tracking system may acquire the third index value through the sum of the second index values for each of the plurality of Wi-Fi APs included in the AP information in the same time zone as the confirmed person. In other words, the third index value may mean the sum of the second index values of all Wi-Fi APs scanned for each time period. For example, the quarantine tracking system includes a second index value for each of the first Wi-Fi AP 411, the second Wi-Fi AP 412, and the third Wi-Fi AP 413 included in the Wi-Fi AP information of the same time zone as the confirmed person. A third index value may be obtained through the sum of .

The quarantine tracking system may compare the obtained third index value with a threshold value to determine whether the subject 501 has contacted the confirmed patient 500 . In this case, the threshold value may be set to a preset value. For example, the quarantine tracking system determines that the subject 501 has contacted the confirmed case 500 when the third index value is less than or equal to the threshold, and when the third index value is greater than or equal to the threshold, the subject 501 is It may be determined that there will be no contact with the confirmed person 500 . The quarantine tracking system may classify the subject 501 as a contact as it is determined that the subject 501 has come into contact with the confirmed case 500 . The quarantine tracking system can acquire result information by tracking the movement of the classified contact or confirmed person. For example, the quarantine tracking system may provide movement route information through an electronic device by mapping a movement route of a confirmed person or a contact person to map data. Alternatively, as the target is classified as a contact, the quarantine tracking system may immediately notify the contact's electronic device of contact with the confirmed person.

In addition, the quarantine tracking system may correct the contact determination by converting the received signal strength into distance information in order to improve the accuracy of determination of the degree of contact tracking between the confirmed person 500 and the subject 501 . For example, the greater the received signal strength received from the electronic device of the subject 501 means, the closer the distance to the Wi-Fi AP is, and the smaller the received signal strength is, the greater the distance to the Wi-Fi AP is. The received signal strength and the distance from the Wi-Fi AP have a functional relationship.

The quarantine tracking system converts the received signal strength included in the AP information of the same time zone into distance information to correct the tracking contact level between the confirmed patient 500 and the subject 501 . The quarantine tracking system can apply the converted distance information as a reference value. The quarantine tracking system may derive a conversion constant (K ₀ ) according to the distance formula of the received signal strength. The distance expression of the received signal strength refers to an expression of converting the received signal strength into distance information. The distance equation of the received signal strength can be expressed as follows.

Equation 1:

In this case, F _m is Fade Margin, N is path-Loss Exponent, ranges from 2.7 to 4.3, P ₀ is Signal power (dBm) at zero distance, P _r is Signal power (dBm) at distance, F is signal frequency in MHz means

In addition, in order to improve the accuracy of determining the degree of contact tracking between the confirmed case 500 and the subject 501, the quarantine tracking system assigns a specific AP to any one of the confirmed case 500 and the subject 501 in the AP information of the same time period. When the received signal strength for the information does not exist, the degree of contact between the confirmed patient 500 and the subject 501 can be corrected by replacing the received signal with a preset received signal value. For example, even if the confirmed patient 500 and the subject 501 exist at the same or similar location in the same time zone, the received signal strength for the Wi-Fi AP may not exist if the staying time is different or if they stay for a short time. In other words, the movement lines of the confirmed patient 500 and the subject 501 may partially overlap.

For example, in the AP information, subject A may have Wi-Fi APs 1, 3, and 4, and subject B may have Wi-Fi APs 1, 4, and 5. In this case, an alternative value (W ₀ ) may be used where there is no received signal strength value for the Wi-Fi AP. For example, the received signal strength reference or distance information (eg, 10m) to which the replacement value W ₀ corresponds to distance information (eg, 10m) may be set as a reference.

The quarantine tracking system may calculate a score for determining the degree of contact. Referring to Table 3, it is an example of a score index for determining the degree of contact.

Table 3:

The quarantine tracking system may calculate a score for determining the degree of contact by calculating the sum of the scores of all APs. The score of each AP may be obtained through the absolute value of (difference of received signal strength values for specific APs of subjects A and B). As for the degree of contact, it may be determined that the degree of contact is higher as the score value is smaller.

The device described above may be implemented as a hardware component, a software component, and/or a combination of the hardware component and the software component. For example, devices and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA). , a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions, may be implemented using one or more general purpose or special purpose computers. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. A processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For convenience of understanding, although one processing device is sometimes described as being used, one of ordinary skill in the art will recognize that the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that can include For example, the processing device may include a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as parallel processors.

Software may comprise a computer program, code, instructions, or a combination of one or more thereof, which configures a processing device to operate as desired or is independently or collectively processed You can command the device. The software and/or data may be any kind of machine, component, physical device, virtual equipment, computer storage medium or apparatus, to be interpreted by or to provide instructions or data to the processing device. may be embodied in The software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiment, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

As described above, although the embodiments have been described with reference to the limited embodiments and drawings, various modifications and variations are possible from the above description by those skilled in the art. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (5)

In the quarantine tracking method performed in the quarantine tracking system,
acquiring AP information collected through reception of broadcast signal information from a plurality of communication devices in an electronic device; and
tracking the movement route information of the target electronic device using AP information in the same time zone as the electronic device for which the movement route tracking is requested based on the obtained AP information
including,
The step of tracking the movement information is,
Through the difference between the value of the received signal strength of the electronic device for which the movement line tracking is requested and the received signal strength of the target electronic device in the same Wi-Fi AP included in the AP information of the same time zone as the electronic device for which the movement line tracking is requested 1 index value is obtained, a second index value is obtained by summing the first index values for each time period, a third index value is obtained by summing the second index values for all Wi-Fi APs for each time period, and the obtained first index value is obtained. 3 When the index value is less than or equal to a preset value, it is determined that the target electronic device has contacted the electronic device for which the movement line tracking is requested, and the received signal strength included in the AP information in the same time zone as the electronic device for which the movement line tracking is requested converts to distance information, corrects the degree of contact with the electronic device for which the movement line tracking is requested for the target electronic device by using the converted distance information, and an AP in the same time zone as the electronic device for which the movement line tracking is requested When the received signal strength for a specific AP does not exist in the electronic device or the target electronic device for which the movement line tracking is requested in the information, it is replaced with a preset received signal strength value and the electronic device for which the movement line tracking is requested for the target electronic device Calibrating the degree of tracking contact with
A quarantine tracking method comprising a. delete delete delete The method of claim 1,
The obtaining step is
The electronic device receives Wi-Fi signal information broadcast from the WLAN AP, and through the received Wi-Fi signal information, the Wi-Fi signal generation time of the WLAN AP and the MAC address of the WLAN AP , obtaining AP information including at least one of Wi-Fi SSID, Received Signal Strength Indication, or App ID that provides a quarantine tracking service
A quarantine tracking method comprising a.

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