KR102114113B1 - User terminals performing short range wireless communication and client server coupled to the same - Google Patents

Abstract

A user terminal according to an embodiment of the present invention includes at least one processor, a communicator providing communication between at least one processor and a network, and a storage medium controlled by the at least one processor. The at least one processor receives, through the communicator, signal fingerprints corresponding to the location identifiers of interest and the location identifiers of interest from an external server, respectively, and stores them in a storage medium, and scans and scans at least one access point accessible by the communicator It is configured to generate a list, and when a signal fingerprint matching the scan list among the signal fingerprints is present, the location identifier of interest corresponding to the matched signal fingerprint is configured to be loaded and broadcast in a predetermined data format.

Description

USER TERMINALS PERFORMING SHORT RANGE WIRELESS COMMUNICATION AND CLIENT SERVER COUPLED TO THE SAME

The present invention relates to a network system, and more particularly, to a user terminal performing short-range wireless communication and a client server connected to the user terminal.

Bluetooth 4.0 BLE (Bluetooth Low Energy) is a wireless communication technology developed for application to various short-range communication applications requiring low power. The beacon technology to which BLE (Bluetooth Low Energy) is applied can provide location-based service at a fixed time interval to a short-range user located within a radio communication radius. For example, in a place such as a room where it is difficult to detect a location using a Global Positioning System (GPS), the beacon device may provide location information to nearby user terminals. These beacon devices are currently being applied and activated in various services and products, and generally, most beacon devices currently on the market are equipped with a system on chip (SoC) and a battery that are responsible for signal transmission.

The beacon device includes a system on chip (SoC) in charge of signal transmission and a battery. To provide a location-based service using the beacon device as described above, a plurality of beacon devices such that signals from beacon devices are transmitted to user terminals They should be installed. Accordingly, it is relatively expensive to install and maintain the beacon devices.

The above description is only to assist in understanding the background of the technical ideas of the present invention, and therefore it cannot be understood as the content corresponding to the prior art known to those skilled in the art of the present invention.

Systems and devices according to embodiments of the present invention can provide a location-based service with relatively high compatibility without physical beacon devices.

User terminal according to an embodiment of the present invention, at least one processor; A communicator that provides communication between the at least one processor and a network; And a storage medium controlled by at least one processor, wherein the at least one processor receives the location of interest identifiers and signal fingerprints corresponding to the location of interest identifiers from an external server through the communicator. Stored in media; Scan at least one access point accessible by the communicator to generate a scan list; When there is a signal fingerprint matching the scan list among the signal fingerprints, a location identifier of interest corresponding to the matched signal fingerprint is configured to be loaded and broadcast in a predetermined data format.

The at least one processor receives a key from the external server through the communicator and stores it in the storage medium; The digital signature may be performed using the key, and the digital signature may be further loaded and broadcast in the predetermined data format.

The predetermined data format includes a universal unique identifier field, a major field, and a minor field, and the at least one processor is configured to display the location identifier of interest and the digital signature corresponding to the matched signal fingerprint in the major field and the minor field. It can be configured to load each in a field.

The at least one processor may be configured to further load and broadcast an identifier associated with the user terminal in the predetermined data format, along with the location identifier of interest corresponding to the matched signal fingerprint.

Another aspect of the present invention relates to a user terminal that receives a broadcast data packet. A user terminal according to an embodiment of the present invention includes at least one processor; A communicator that provides communication between the at least one processor and a network; And a storage medium controlled by at least one processor, wherein the at least one processor receives a key from an external server through the communicator and stores the key in the storage medium; Extracting a location identifier of interest and a digital signature from the data packet when a data packet being broadcast by one or more nearby terminals is detected through the communicator; It is configured to verify the validity of the location identifier of interest by verifying the digital signature using the key.

The at least one processor may be configured to select the location of interest identifier when the validation is passed.

The data packet has a data format including a universal unique identifier field, a major field, and a minor field, and the at least one processor is configured to extract the location of interest identifier and the digital signature from the major field and the minor field, respectively. Can be configured.

When a plurality of data packets are received from the neighboring one or more terminals, and the at least one processor, when the number of the same interest location identifiers among the interest location identifiers through which the verification of the validity is passed is greater than or equal to a threshold, the same It can be configured to select location identifiers of interest.

Another aspect of the present invention relates to a client server connected to a user terminal through a network. A client server according to an embodiment of the present invention includes a communicator; A processor configured to communicate with the user terminal through the communicator; And a storage medium storing program codes to be executed by the user terminal, wherein the program codes receive and store interest location identifiers and signal fingerprints respectively corresponding to the interest location identifiers from an external server; Scan at least one accessible access point to generate a scan list; When there is a signal fingerprint matching the scan list among the signal fingerprints, instructions for loading and broadcasting a location identifier of interest corresponding to the matched signal fingerprint in a predetermined data format are broadcast.

The program codes receive and store a key from the external server; Further comprising instructions for performing a digital signature using the key, instructions for loading and broadcasting in the data format may include instructions for further loading the digital signature in the predetermined data format.

The predetermined data format includes a universal unique identifier field, a major field, and a minor field, and instructions for loading and broadcasting the data format include the location of interest identifier and the digital signature corresponding to the matched signal fingerprint. It may include instructions for loading each of the major field and the minor field.

Instructions for loading and broadcasting in the data format may include instructions for further loading an identifier associated with the user terminal into the determined data format, along with the location identifier of interest corresponding to the matched signal fingerprint.

According to embodiments of the present invention, a system and apparatus for providing a location-based service having relatively high compatibility for various user terminals without physical beacon devices is provided.

1 is a block diagram showing a network system according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram showing an embodiment of location information sets of FIG. 1.
3 is a flowchart illustrating a method of broadcasting a location identifier of interest in a first user terminal according to an embodiment of the present invention.
4 is a diagram for describing operations performed to broadcast a location identifier of interest.
5 is a flowchart illustrating an embodiment of step S140 of FIG. 3.
6 is a conceptual diagram showing a data format of a broadcast data packet.
7 is a block diagram illustrating an exemplary computer device capable of implementing a first user terminal.
8 is a flowchart illustrating a method of receiving and processing a location identifier of interest in a second user terminal.
9 is a flowchart illustrating an embodiment of step S350 of FIG. 8.
10 is a block diagram illustrating an exemplary computer device capable of implementing a second user terminal.
11 is a block diagram showing a client server in communication with first and second user terminals to provide program codes.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention are described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention. In addition, the present invention is not limited to the embodiments described herein and may be embodied in other forms. However, the embodiments described herein are provided to explain in detail that the technical spirit of the present invention can be easily implemented to a person having ordinary knowledge in the technical field to which the present invention pertains.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with another element in between. . The terminology used herein is for describing specific embodiments and is not intended to limit the present invention. Throughout the specification, when a part “includes” a certain component, this means that other components may be further included rather than excluding other components unless specifically stated to the contrary. "At least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" are one of X, one of Y, one of Z, or two of X, Y, and Z, or Any further combination (eg, XYZ, XYY, YZ, ZZ) can be interpreted. Here, “and / or” includes all combinations of one or more of the configurations.

1 is a block diagram showing a network system according to an embodiment of the present invention. FIG. 2 is a conceptual diagram showing an embodiment of location information sets of FIG. 1.

Network system 100 may include a plurality of devices, servers, and / or software components operative to perform methods according to embodiments described herein. The devices and servers shown in FIG. 1 can be deployed in other ways, and the operations and services provided by such devices and / or servers can be combined or separated to perform the embodiments described herein. And may be performed by more or fewer devices and servers.

Referring to FIG. 1, the network system 100 includes a network 105, a first user terminal 110, a second user terminal 120, and a location information management server 130.

The network 105 connects various components in the network system 100, such as the first user terminal 110, the second user terminal 120, and the location information management server 130. The network 105 may include at least one of a public network, at least one private network, a wired network, a wireless network, other suitable types of networks, and combinations thereof. Each of the first user terminal 110, the second user terminal 120, and the location information management server 130 may include at least one of a wired communication function and a wireless communication function, and accordingly, through the network 105 They can communicate with each other.

The first user terminal 110 may communicate with the location information management server 130 through the network 105. The first user terminal 110 may access the location information management server 130 to receive at least some of the location information sets LIS, and store the received location information sets LIS on an internal storage medium. At this time, the location information sets LIS include point of interest (POI) identifiers and signal fingerprints respectively corresponding to the location of interest identifiers. The location of interest means an arbitrary location to provide a location-based service, for example, a space where “XX cafe” is located, a space where “XX bookstore” is located, and the like. The signal fingerprint refers to information associated with signals detectable by short range wireless communication, such as Wi-Fi at the location of interest, for example, identifiers of access points and their signal strengths.

Referring to FIG. 2, the location information sets LIS include a plurality of location identifiers of interest (PID1 to PIDz) (z is an integer greater than 1). The signal fingerprint of the first location-of-interest identifier (PID1) includes a first access point identifier (AP1) and a corresponding first signal strength (STR1), a second access point identifier (AP2) and a second signal strength (STR2), and It includes a third access point identifier (AP3) and a third signal strength (STR3). The signal fingerprint of the z-th location-of-interest identifier (PIDz) includes the n-th access point identifier (APn) and the n-th signal strength (STRn), and the n + 1 access point identifier (APn + 1) and the n + 1 signal strength ( STRn + 1) (n is an integer greater than or equal to 1).

Referring back to FIG. 1, the first user terminal 110 is Bluetooth (Bluetooth) communication, Wi-Fi communication, LTE D2D (Device-to-Device) communication, RFID (Radio Frequency IDentification) communication, Magnetic Secure Transmission (Magnetic Secure Transmission) ) It can communicate with nearby access points and the second user terminal 120 through various types of short-range wireless communication such as communication, Zigbee communication, and IR (Infrared Data Association) communication.

The first user terminal 110 may scan a nearby access point through short-range wireless communication such as Wi-Fi to generate a scan list. The first user terminal 110 compares the generated scan list with signal fingerprints stored in the internal storage medium, selects any one of the location identifiers of interest stored in the internal storage medium, and uses the selected location-of-interest service to locate the location-based service It may include an application that provides a. In embodiments, the location-based service provided by the application application transmits the selected location identifier of interest to a third party server, and provides information corresponding thereto, for example, shop-related information, discount coupon-related information, and the like. 3 may include operations received from the server and displaying the received information on the display device of the first user terminal 110 so that the user can be recognized.

The second user terminal 120 may not include a function for generating a scan list. Alternatively, even if the second user terminal 120 includes a function for generating a scan list, the operating system provides the scan list only to application groups in the first group that have been previously authenticated, and application groups in the second group. May not be provided. For example, the operating system of the second user terminal 120 may be iOS. In this case, some application applications installed or to be installed in the second user terminal 120 may not be provided with a scan list. On the other hand, when a data packet broadcast in a predetermined data format such as an iBeacon is detected, the operating system of the second user terminal 120 transmits the data packet as well as the application applications of the first group as well as the application of the second group. It can also be delivered to applications.

The first user terminal 110 may load the selected location-of-interest identifier in a predetermined data format and broadcast it through short-range wireless communication such as Bluetooth. In embodiments, the first user terminal 110 may broadcast the selected location of interest identifier via Bluetooth 4.0 BLE. In embodiments, the predetermined data format may include the standard of ibeacon.

When the broadcast data packet is detected, the second user terminal 120 may extract the location identifier of interest from the data packet. The second user terminal 120 may include an application for receiving a location identifier of interest through a corresponding operating system and providing a location-based service using the location identifier of interest. For example, such an application may belong to the second group of application applications. In embodiments, the location-based service provided by the application application transmits the location identifier of interest to the third server, receives the corresponding information from the third server, and displays the received information on the second user terminal 120 It may include actions to display on the device. As described above, by broadcasting the location identifier of interest by the first user terminal 110, the second user terminal 120 located in the vicinity of the first user terminal 110 provides location-based services without additional beacon devices. can do. Furthermore, even if the operating system of the second user terminal 120 limits providing a scan list to the second group of application applications, the application application of the second group is also provided with a location identifier of interest to provide location-based services. Can provide. Accordingly, a location-based service having relatively high compatibility with user terminals having various operating systems can be provided.

Each of the first and second user terminals 110 and 120 is a computer, a UMPC (Ultra Mobile PC), a workstation, a net-book, a PDA (Personal Digital Assistants), a portable computer, a web tablet ( It may be a computer device capable of transmitting and receiving information in a wired and / or wireless environment, such as a web tablet, a wireless phone, a mobile phone, and a smart phone.

The location information management server 130 may include a communicator 131, a processor 132, and a database 133. The communicator 131 may communicate with the first user terminal 110 and the second user terminal 120 through the network 105. The processor 132 may transmit the location information sets LIS stored in the database 133 to the first user terminal 110 through the communicator 131. The database 133 may be disposed inside the location information management server 130 as shown in FIG. 1. As another example, at least a portion of the database 133 is disposed outside the location information management server 130 and may communicate with the location information management server 130 through the network 105.

3 is a flowchart illustrating a method of broadcasting a location identifier of interest in a first user terminal according to an embodiment of the present invention. 4 is a diagram for describing operations performed to broadcast a location identifier of interest.

1 and 3, in step S110, the location identifiers of interest provided from the location information management server 130 and signal fingerprints corresponding to them are stored in an internal storage medium.

In step S120, a scan list is generated by scanning at least one access point in the vicinity through short-range wireless communication such as Wi-Fi. Referring to FIG. 4, the first user terminal 110 may scan a signal generated from neighboring first to third access points AP1 to AP3 to generate a scan list. The generated scan list may include identifiers of the scanned access points AP1 to AP3 and corresponding signal strengths.

Referring back to FIGS. 1 and 3, in step S130, it is determined whether there is a match with the scan list among the stored signal fingerprints. Similarity between each of the signal fingerprints and the scan list can be determined based on various methods known in the art. For example, in order to determine the similarity, it may be determined whether the access points of the stored signal fingerprint match the access points of the scan list or more. Additionally, signal strength may be further referenced. When a match exists between the stored signal fingerprints and the scan list, step S140 is performed.

In step S140, through a short-range wireless communication such as Bluetooth, a location identifier of interest corresponding to the determined signal fingerprint is loaded and broadcast in a predetermined data format. Referring to FIG. 4, the first user terminal 110 broadcasts the location identifier of interest, and the second user terminal 120 is located if the second user terminal 120 is located around the first user terminal 110. If so, the broadcasted location identifier of interest can be detected.

5 is a flowchart illustrating an embodiment of step S140 of FIG. 3. 6 is a conceptual diagram showing a data format of a broadcast data packet.

1 and 5, in step S210, a digital signature is performed using a key KY received from the location information management server 130. The database 133 of the location information management server 130 stores the key KY, and the processor 132 may provide the key KY to the first user terminal 110 through the communicator 131. The first user terminal 110 may store the received key KY in an internal storage medium and use it to perform digital signature as in step S210.

In step S220, the digital signature is loaded and broadcast in a predetermined data format together with the location identifier of interest. Referring to FIG. 6, a predetermined data format may include a universally unique identifier (UUID) field, a major field, and a minor field. In the UUID field, an identifier associated with the first user terminal 110 as an information provider, for example, a beacon identifier (BID), is loaded, a major field of interest identifier (PID) is loaded, and a minor field is digitally signed (DSGN). This can be loaded. The second user terminal 120 may obtain a location ID of interest (PID) by extracting data from the major field, and obtain a digital signature (DSGN) from the minor field to verify the validity of the location ID of interest (PID). have.

 In embodiments, the defined data format may be based on the iBeacon's specifications.

7 is a block diagram illustrating an exemplary computer device capable of implementing a first user terminal.

Referring to FIG. 7, the computer device 200 includes a communicator 210, a user interface 220, a display 230, a nonvolatile memory 240, a processor 250, and a system memory 260.

The computer device 200 communicates with the network 105 (see FIG. 1) through the communicator 210. The communicator 210 is configured to transmit a radio signal with at least one of a base station, an external server, and an external terminal on a mobile communication network. In this case, the wireless signal may include a voice call signal, a video call signal, or various types of data according to transmission / reception of text / multimedia messages. Further, the communicator 210 is configured to access the wireless Internet.

Furthermore, the communicator 210 is configured to perform various types of short-range wireless communications such as Bluetooth communication, Wi-Fi communication, LTE D2D communication, RFID communication, magnetic security transmission communication, Zigbee communication, and infrared communication.

The user interface 220 receives a user input for controlling the operation of the computer device 200. The user interface 220 may include a key pad, a dome switch, a touch pad (static pressure / blackout), a jog wheel, a jog switch, a finger mouse, and the like. In particular, when the touch pad is integrally formed with the display 230, it may be referred to as a touch screen. In this case, the user interface 220 can be visualized by the display 230.

The display 230 displays information processed by the computer device 200. For example, the processor 250 may display information received from an external server and information processed based on the received information on the display 230. When the display 230 is integrally formed with the touch pad to form a touch screen, the display 230 may display the user interface 220. The display 230 may include at least one of a liquid crystal display, an organic light-emitting diode display, and a flexible display.

The nonvolatile memory 240 may be at least one of a flash memory type, a hard disk type, and a multimedia card.

The processor 250 may include either a general purpose or a dedicated processor, and perform operations of the communicator 210, the user interface 220, the display 230, the nonvolatile memory 240, and the system memory 260. Control.

The processor 250 is configured to, when executed, load program codes and / or instructions that provide various functions from the nonvolatile memory 240 to the system memory 260 and execute the loaded program codes and / or instructions. . For example, the system memory 260 may be provided as a working memory of the processor 250. The processor 250 may further include additional working memory.

The processor 250, when executed by the processor 250, performs the operations described with reference to FIGS. 3 and 5, the radio wave scan module 261, the location information management module 262, the digital signature generation module 263, And loading the beacon signal transmission module 264 into the system memory 260 and executing the loaded modules. When executed by the processor 250, the radio wave scan module 261 may scan at least one access point in the vicinity to generate a scan list. For example, an operating system installed in the computer device 200 may perform functions of the radio wave scan module 261. The location information management module 262, when executed by the processor 250, accesses the location information management server 130 to receive location identifiers of interest and signal fingerprints corresponding to each of them, and stores them in the nonvolatile memory 240 ), And it is possible to select a location identifier of interest by determining whether there is a match with the scan list among the stored signal fingerprints. The digital signature generation module 263, when executed by the processor 250, may perform a digital signature using a key KY. The beacon signal transmission module 264, when executed by the processor 250, may load a selected interest location identifier and digital signature into a predetermined data format and broadcast it via short-range wireless communication such as Bluetooth. For example, the location information management module 262, the digital signature generation module 263, and the beacon signal transmission module 264 may be included in one application application and installed in the computer device 200.

In embodiments, the system memory 260 may include at least one of random access memory (RAM), read only memory (ROM), and other types of computer-readable media.

8 is a flowchart illustrating a method for receiving and processing a location identifier of interest in a second user terminal.

1 and 8, in step S310, the key KY received from the location information management server 130 is stored. The second user terminal 120 may access the location information management server 130 to receive the key KY, and store the received key KY in an internal storage medium.

In step S320, it is determined whether a data packet broadcast by the peripheral terminal is detected. If the first user terminal 110 is located around the second user terminal 120 and the second user terminal 110 is performing broadcast, the second user terminal 120 transmits the broadcasted data packet. Can be detected. If the broadcast data packet is detected, step S330 is performed.

In step S330, a location identifier of interest and a digital signature are extracted from the data packet. In embodiments, the second user terminal 120 extracts the location identifier of interest (PID, see FIG. 6) from the major field of the data packet and the digital signature (DSGN, see FIG. 6) from the minor field of the data packet. Can be.

In step S340, the validity of the location identifier (PID) of interest is verified by verifying the digital signature using the key (KY). The digital signature using the key KY and the verification of the digital signature using the key KY may be performed according to various methods known in the art. For example, the key KY provided to the first user terminal 110 is a private key, and the first user terminal 110 can perform a digital signature using the private key. At this time, the key KY provided to the second user terminal 120 is a public key, and the second user terminal 120 can verify the digital signature using the public key.

Passing the verification of the digital signature means that the data packet being broadcast is highly reliable. According to an embodiment of the present invention, the first user terminal 110 performs a digital signature using a key (KY) and the second user terminal 120 uses a key (KY) to verify the digital signature. The user terminal 120 may exclude a location identifier of interest broadcast from an unknown source. Thus, the reliability of the location identifier of interest communicated in the network system 100 is improved.

In step S350, it is determined whether to select the location identifier of interest. For example, the second user terminal 120 drops the location ID of interest (PID) when verification of the validity of the location ID of interest (PID) fails, and the validation of the validity of the location ID of interest (PID) passes When possible, a location identifier (PID) of interest may be selected. When the location of interest identifier (PID) is selected, the second user terminal 120 may provide the location-based service using the location of interest identifier (PID) selected.

9 is a flowchart illustrating an embodiment of step S350 of FIG. 8.

1 and 9, in step S410, validity verified interest location identifiers are stored. The second user terminal 120 may store (or accumulate) selected location identifiers of interest for a predetermined time.

In step S420, it is determined whether the number of the same interest location identifiers among the stored interest location identifiers is greater than a threshold value. If so, step S430 is performed.

If the number of the same interest location identifiers is greater than the threshold value, it means that multiple user terminals broadcast the same interest location identifiers, which means that the probability that the second user terminal 120 is located at the location of interest is relatively high. Can mean In step S430, a corresponding location identifier of interest may be selected, and a location-based service may be provided based on the selected location location of interest. Accordingly, the location-based service provided by the second user terminal 120 may have higher reliability.

10 is a block diagram illustrating an exemplary computer device capable of implementing a second user terminal.

Referring to FIG. 10, the computer device 300 includes a communicator 310, a user interface 320, a display 330, a nonvolatile memory 340, a processor 350, and a system memory 360. The communicator 310, the user interface 320, the display 330, the nonvolatile memory 340, the processor 350, and the system memory 360 are the communicator 210, the user interface ( 220), the display 230, the nonvolatile memory 240, the processor 250, and the system memory 260, respectively. Hereinafter, overlapping descriptions are omitted.

The processor 350, when executed by the processor 350, performs the operations described with reference to FIGS. 8 and 9, a beacon signal receiving module 361, a digital signature verification module 362, and a location identifier selection module of interest ( 363) may be loaded from the nonvolatile memory 340 into the system memory 360, and the loaded modules may be executed. The beacon signal receiving module 361, when executed by the processor 350, can extract a location identifier of interest and a digital signature from a data packet. The digital signature verification module 362, when executed by the processor 350, can verify the validity of the location identifier (PID) of interest by verifying the digital signature using the key KY. For example, an operating system installed in the computer device 300 may perform at least some of the functions of the beacon signal receiving module 361 and the digital signature verification module 362. The location-of-interest selection module 363 determines whether to select the location-of-interest identifier and provides location-based services using the location-of-interest identifier (PID). The location identifier selection module 363 of interest may be installed in the computer device 300 as one application application.

11 is a block diagram showing a client server that communicates with first and second user terminals to provide program codes.

Referring to FIG. 11, the client server 1000 may include a communicator 1100, a processor 1200, and a database 1300. The communicator 1100 can communicate with the first user terminal 110 and / or the second user terminal 120 through the network 105. The processor 1200 is configured to control the communicator 1100 and the database 1300, and the program codes and / or instructions stored in the database 1300 are first and second user terminals 110 through the communicator 1100. , 120). For example, the database 1300 stores an application application including the location information management module 262, the digital signature generation module 263, and the beacon signal transmission module 264 described with reference to FIG. 7, and the processor 1200 may provide the stored application to the first user terminal 110 in response to the request of the first user terminal 110. For example, the database 1300 stores an application application including the location identifier selection module 363 of interest described with reference to FIG. 10, and the processor 1200 stores the stored application application in the second user terminal 120. It may be provided to the second user terminal 110 in response to the request. The database 1300 may be disposed inside the client server 1000 as illustrated in FIG. 11. As another example, at least a portion of the database 1300 is disposed outside the client server 1000 and may communicate with the client server 1000 through the network 105.

Although specific embodiments and application examples have been described herein, this is provided only to assist in a more general understanding of the present invention, and the present invention is not limited to the above embodiments and has ordinary knowledge in the field to which the present invention pertains. Various modifications and variations are possible from this description when grown.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and should not be determined, and all claims that are equivalent or equivalent to the scope of the claims as well as the claims described below belong to the scope of the spirit of the invention. .

110: first user terminal
120: second user terminal
130: location information management server
AP1 to AP3: first to third access points

Claims (14)

At least one processor;
A communicator that provides communication between the at least one processor and a network; And
A storage medium controlled by at least one processor,
The at least one processor,
Receiving point-of-interest identifiers and signal fingerprints respectively corresponding to the point-of-interest identifiers from an external server through the communicator and storing them in the storage medium;
Scan at least one access point accessible by the communicator to generate a scan list;
When there is a signal fingerprint matching the scan list among the signal fingerprints, a location identifier of interest corresponding to the matched signal fingerprint is configured to be loaded and broadcast in a predetermined data format,
The at least one processor provides the location identifier of interest to an external user terminal located around the user terminal by broadcasting the location identifier of interest through the communicator. According to claim 1,
The at least one processor,
Receiving a key from the external server through the communicator and storing it in the storage medium;
A user terminal configured to perform a digital signature using the key and to load and broadcast the digital signature to the predetermined data format. According to claim 2,
The predetermined data format includes a universally unique identifier field (UUID), a major field, and a minor field,
The at least one processor,
And a user terminal configured to load the location identifier of interest and the digital signature corresponding to the matched signal fingerprint into the major field and the minor field, respectively. According to claim 1,
The at least one processor,
The user terminal is configured to further load and broadcast an identifier associated with the user terminal in the predetermined data format, along with the location of interest identifier corresponding to the matched signal fingerprint. delete delete delete delete On the client server connected to the user terminal via the network:
Communicator;
A processor configured to communicate with the user terminal through the communicator; And
A storage medium for storing program codes to be executed by the user terminal,
The program codes are:
Receiving and storing point of interest identifiers and signal fingerprints respectively corresponding to the location of interest identifiers from an external server;
Scan at least one accessible access point to generate a scan list;
When there is a signal fingerprint matching the scan list among the signal fingerprints, it includes instructions for loading and broadcasting a location identifier of interest corresponding to the matched signal fingerprint in a predetermined data format,
The broadcasted interest location identifier is a client server provided to an external user terminal located around the user terminal. The method of claim 9,
The program codes are:
Receiving and storing a key from the external server;
Further comprising instructions for performing a digital signature using the key,
The instructions for loading and broadcasting in the data format include instructions for further loading the digital signature in the predetermined data format. The method of claim 10,
The predetermined data format includes a universally unique identifier field (UUID), a major field, and a minor field,
The instructions for loading and broadcasting in the data format include instructions for loading the location of interest identifier and the digital signature corresponding to the matched signal fingerprint in the major field and the minor field, respectively. The method of claim 9,
The instructions for loading and broadcasting in the data format include instructions for further loading an identifier associated with the user terminal into the predetermined data format, along with the location identifier of interest corresponding to the matched signal fingerprint.
delete delete

Images