KR101302725B1 - Method and appararus for identifying location in local area network - Google Patents

Abstract

PURPOSE: A location confirming method in a short-distance network and a device thereof are provided to accurately confirm the position of a terminal although the signal strength of the short-distance network such as Wi-Fi and Bluetooth is frequently changed due to people or obstacles. CONSTITUTION: A location confirming device of a short-distance network comprises a location confirming module (15) and database (19). The location confirming module obtains signal strength, a media access control (MAC) address, and a service set identifier (SSID) from a wireless access device by searching a short-distance wireless signal. When the signal strength of the wireless access device is more than a first standard value and when the MAC address of the wireless access device was previously registered, the location confirming module confirms a virtual area ID in which the wireless access device is arranged and confirms a building and a floor by using the virtual area ID. The location confirming module confirms a first signal strength wireless access device and a second signal strength wireless access device amount the wireless access devices arranged on the building and the layer. When the first signal strength is over a second standard value, the location confirming module confirms the virtual area in which the first signal strength wireless access device is arranged with the location of a terminal. The database stores the virtual area ID stored by each MAC address. [Reference numerals] (10) Memory; (11) Operating system; (13) Communication module; (15) Location detecting module; (17) Application; (19) Database; (21) Memory control device; (23) Central processing device; (25) Interface; (30) Display device; (40) Input device; (50) Communication circuit; (60) External port; (70) Audio circuit

Description

METHOD AND APPARARUS FOR IDENTIFYING LOCATION IN LOCAL AREA NETWORK}

The present invention relates to a positioning method and apparatus in a local area network.

Today, various tasks and services are possible by using the location information of the user who uses the terminal, and by using the user's real-time location information in the building, a very effective security management task is also possible.

The user's real-time location information is effectively measured using a GPS (Global Positioning System) using satellites in the outdoors, but it is not available in indoor spaces such as inside the building, and in the indoor spaces, such as RFID (Radio Frequency Identification), WiFi or Locations are being measured using local area networks, such as Bluetooth.

In particular, WiFi has a three-point method of obtaining location information using three WiFi and a cell method of dividing the interior of the building into cells of a certain size and creating a location information database by measuring WiFi values for each cell. For example, when 2.4GHz or 5GHz) people or obstacles appear, the WiFi signal strength changes from time to time to find the exact location. In addition, Bluetooth also uses the 2.40GHz to 2.48GHz frequency to find a location has the same problem as WiFi.

The technical problem to be achieved by the present invention is a method and apparatus for identifying a location in a local area network that uses a local area network when a user having a specific terminal executes a specific application in an indoor space such as a building. It is about.

In a local area network according to an embodiment of the present invention, the method for identifying a location in a terminal including a positioning module to identify a location in a local area wireless network, searching for a local area wireless signal from at least one or more wireless access devices MAC address, Acquiring a SSID (Service Set Identifier), signal strength; if the signal strength of the radio access device is greater than or equal to a first reference value and the MAC address of the radio access device is already registered, the radio access device is disposed. Identifying a virtual area ID, identifying a building / floor using the virtual area ID, a signal strength radio access device and a second signal strength radio access device of the wireless access devices disposed in the building / floor; If the first signal strength is greater than or equal to the second reference value, the virtual area in which the first signal strength radio access device is arranged is located above the terminal. And a step of confirmation by.

In a local area network according to another embodiment of the present invention, a method for locating a location in a local area network by a terminal including a location module, comprising: searching for a local area wireless signal to search for a MAC address from at least one wireless access device, Acquiring an SSID, a signal strength, and if the signal strength of the radio access device is greater than or equal to a first reference value and the MAC address of the radio access device is already registered, a virtual area in which the radio access device is arranged from the SSID; Checking an ID, checking a building / floor using the virtual area ID, checking a 1st signal strength radio access device and a 2nd signal strength radio access device among the radio access devices arranged in the building / floor If the first signal strength is greater than or equal to a second reference value, the virtual area in which the first signal strength wireless access device is arranged is located above the terminal. And a step of confirmation by.

The localization apparatus in the local area network according to an embodiment of the present invention retrieves a local area wireless signal to obtain a MAC address, SSID, signal strength from at least one radio access device, the signal strength of the radio access device is the first If the reference value is higher than the MAC address of the wireless access device, the virtual area ID where the wireless access device is located is checked, the building / floor is identified using the virtual area ID, and the building / floor Among the radio access devices disposed in the apparatus, the 1st signal strength radio access device and the 2nd signal strength radio access device are identified, and if the 1st signal strength is greater than or equal to a second reference value, the 1st signal strength radio access device is arranged. A location module for identifying a virtual area as a location of a terminal, and a database including the virtual area ID stored for each MAC address.

In the local area network according to another embodiment of the present invention, the positioning device obtains a MAC address, SSID, signal strength from at least one radio access device by searching for a communication module and a near field radio signal, and the signal strength of the radio access device. Is greater than or equal to the first reference value and the MAC address of the radio access device is already registered, confirming the virtual area ID where the radio access device is arranged from the SSID, and confirming the building / floor using the virtual area ID. The first signal strength radio access device and the second signal strength radio access device among the radio access devices arranged in the building / floor are checked. When the first signal strength is greater than or equal to a second reference value, the first signal strength is used. It includes a positioning module for identifying the virtual area in which the radio access device is disposed as the position of the terminal.

According to the method and apparatus for confirming location in a local area network according to an embodiment of the present invention, the following effects are obtained.

First, even if the signal strength of a local area network such as WiFi or Bluetooth changes from time to time as a person or an obstacle, accurate positioning of the terminal is possible.

Secondly, the present invention can continuously check the location of a specific terminal even when the external server is down.

Third, the present invention uses a local area network such as WiFi, Bluetooth for the purpose of positioning, and all the algorithms related to the location of the terminal uses the resources of the terminal, so the investment cost is very low when constructing a positioning system in a building or the like. It takes

Fourth, the present invention it is possible to perform the location check in more detail through the WiFi installation location adjustment.

1 is a block diagram showing a terminal as a positioning device in a local area network according to an embodiment of the present invention.
2 is a view for explaining a method for positioning in a local area network according to a first embodiment of the present invention.
3 is a view for explaining a location confirmation method in a local area network according to a second embodiment of the present invention.
4 is a view for explaining a first embodiment of a method for locating a terminal in a local area network of the present invention.
5 is a view for explaining a second embodiment of a method for locating a terminal in a local area network of the present invention.
6 is a view for explaining a third embodiment of a method for locating a terminal in a local area network of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is intended that the disclosure of the present invention be limited only by the terms of the appended claims.

Also, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises "and / or" comprising "used in the specification do not exclude the presence or addition of components other than the components mentioned. Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art.

In the present specification, "virtual area" refers to an area obtained by virtually dividing an arbitrary building or floor, and "virtual area ID" refers to an identifier (ID) assigned to identify each virtual area.

As used herein, the term “wireless access device” refers to a device installed for a local area network. For example, various APs for a local area network, such as a WiFi AP and a Bluetooth AP, may be used.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to describe the present invention in more detail.

1 is a block diagram showing a terminal as a positioning device in a local area network according to an embodiment of the present invention.

In the present specification, the terminal 1, which is a positioning device in a local area network, includes a computer, a laptop computer, a handheld computer, a tablet computer, a cellular phone, a media player, a PDA, and the like, and two such items. It may be any portable electronic device including but not limited to the above combination. It should be appreciated that the terminal 1 is only one example of a portable electronic device, and that the terminal 1 may have a configuration of more or less components or different components than shown. The various components shown in FIG. 1 may be implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and / or application specific integrated circuits.

Referring to FIG. 1, the terminal 1, which is a positioning device in a local area network, includes a memory 10, a memory controller 21, one or more CPUs 23, an interface 25, a display device 30, The input device 40, the communication circuit 50, an external port 60, and an audio circuit 70 are included. These components communicate through one or more communication buses or signal lines.

The memory 10 is a portion for storing arbitrary data, software, and the like, and may include fast random access memory, and may also include one or more magnetic disk storage devices, nonvolatile memory such as a flash memory device, or other nonvolatile semiconductor memory. It may include a device. In some embodiments, the memory 10 may be connected to a storage device, such as a communication circuit 50 or an external port 60, located remotely from one or more central processing units, such as the Internet, an intranet, a LAN (Local Area Network) Wide LAN), a storage area network (SAN), etc., or any suitable combination thereof. The access to the memory 10 by the other components of the terminal 1 such as the central processing unit 23 and the interface 25 can be controlled by the memory control circuit 21. [

The software components stored in the memory 10 may include an operating system 11, a communication module 13 (or an instruction set), a positioning module 15 (or an instruction set) and at least one application (instruction set) 17, Database 19 is included. In addition, although not shown in FIG. 1, the memory 10 may further store data such as various modules, software, and contents.

Operating system 11 (e.g., a built-in operating system such as Darwin, RTXC, LINUX, UNIX, OS X, WINDOWS or VxWorks, Android OS, iOS, Blackberry OS, Windows Mobile, Symbian, or Tigen) is a common system task. It includes various software components and / or devices that control and manage (eg, memory management, memory control, power management, etc.) and facilitates communication between various hardware and software components.

The communication module 13 also includes various software components for facilitating communication with other devices through one or more external ports 60 and for processing data received by the communication circuit 50 and the external port 60. . The external port 60 (e.g., USB, FIREWIRE, etc.) is used for direct connection to another device or indirect connection via a network (e.g., the Internet, wireless LAN, cellular telephone network, etc.).

For example, the communication module 13 may enable receiving data such as a MAC address, a service set identifier (SSID), and a signal strength from the external server through the communication circuit 50.

The positioning module 15 is a module that allows the user of the terminal 1 in which the positioning module 15 is embedded to check the position of the terminal 1 in the local area network.

For example, the positioning module 15 may search for a short range wireless signal to obtain a MAC address, SSID, and signal strength from at least one wireless access device, and the signal strength of the wireless access device is greater than or equal to a first reference value, and the wireless connection may be performed. If the MAC address of the device is already registered, check the virtual area ID where the wireless access device is located using the information stored in the database, check the building / floor using the virtual area ID, and check the wireless Check the No.1 signal strength radio access device and No.2 signal strength radio access device among the access devices. You can check it.

As another example, the positioning module 15 retrieves a short range wireless signal to obtain a MAC address, SSID, and signal strength from at least one wireless access device, and the signal strength of the wireless access device is greater than or equal to a first reference value. If the MAC address is already registered, check the virtual area ID where the wireless access device is located from the SSID, check the building / floor using the virtual area ID, and place the 1st signal among the wireless access devices arranged in the building / floor. The strength wireless access device and the second signal strength wireless access device may be checked, and if the first signal strength is greater than or equal to the second reference value, the virtual area where the first signal strength wireless access device is disposed may be identified as the position of the terminal. Here, the SSID includes the virtual area ID of each radio access device.

In the above two embodiments, if the first signal strength is less than the second reference value, the positioning module 15 checks whether or not the difference between the second signal strength and the first signal strength is greater than or equal to the third reference value. If the difference in the above signal strength is greater than or equal to the third reference value, the virtual area between the 1st signal strength radio access device and the 2nd signal strength radio access device is identified as the position of the terminal, and the difference between the 2nd signal strength and the 1st signal strength If is less than the third reference value, the external virtual area of the first signal strength radio access device opposite to the second signal strength radio access device may be identified as the position of the terminal.

The first reference value is a value between -90 dBm and -70 dBm, the second reference value is a value between -70 dBm and -50 dBm, and the third reference value is between -15 dBm and -5 dBm. The designer can change it according to various environments such as structure and layer thickness. For example, the first reference value is -80 dBm, the second reference value is -60 dBm, and the third reference value is -10 dBm. In addition, the present invention can adjust the signal strength of the radio access device, each reference value can be optimally changed according to the changed signal strength of the radio access device.

At least one application 17 may comprise a browser, an address book, a contact list, an email, an instant message, word processing, keyboard emulation, widgets, encoding, digital rights management, The terminal 1 may include voice recognition, voice replication, location determination functions (location information as provided by GPS), a music player (to play recorded music stored in one or more files, such as MP3 or AAC files), and the like. ) Can contain any and all applications installed.

The database 19 may include information about the wireless access device and location information. For example, the database 19 may include the virtual area ID of the virtual area where the wireless access device is stored according to the MAC address of each wireless access device and the MAC address of the wireless access device. Here, the data stored in the database 19 may be information received from an external server.

The memory control device 21 is a part that controls access to the memory 10 by the other components of the terminal 1 such as the central processing unit 23 and the interface 25. [

One or more CPUs 23 execute various instruction sets stored in various software programs and / or memories 10 to perform various functions for the terminal 1 and to process data.

The interface 25 connects the input / output peripheral of the terminal 1 with the CPU 23 and the memory 10. For example, the interface 25, the central processing unit 23, and the memory control unit 21 may be implemented on one single chip or may be implemented as separate chips.

The display device 30 provides an interface between the user and the terminal 1. That is, the display device 30 displays a visual output to the user, so that the user can view data, contents, and the like through the display device 30. The visual output may include animations, images, text, graphics, video, and combinations thereof. Some or all of the visual output may correspond to a user interface object. The user may check the location information (for example, the virtual area ID) checked by the positioning module 15 through the display device 30 or transmit the information to the server through a communication circuit, thereby enabling various applications.

The input device 40 provides an interface between the user and the terminal 1. That is, the input device 40 allows the user to input a command, such as an input signal, to the terminal 1. When the user inputs the input signal through the input device 40, Detects a user input signal, and executes a command of the user under the control of the central processing unit (23).

For example, a user may execute an application for operating the positioning module 15 through the input device 40.

However, in some embodiments, such as a touch screen, the display device 30 and the input device 40 may be integrated or separated. When the terminal 1 includes the touch screen, the user executes the positioning module 15 through the touch screen, and when the user gives an input signal to the terminal 1 by touching the touch screen, the terminal 1 is the user. By detecting a variety of input signals of the user can perform a command.

The communication circuit 50 transmits and receives a signal such as an electromagnetic wave. The communication circuit 50 converts an electric signal into an electromagnetic wave and communicates with a communication network and other communication devices through the electromagnetic wave. The communication circuit 50 includes, for example, an antenna system, an RF transceiver, one or more amplifiers, tuners, one or more oscillators, digital signal processors, CODEC chipsets, Subscriber Identity Module (SIM) cards, memory, and the like. The present invention is not limited thereto, and may include well-known circuits for performing such a function. The communication circuit 50 may comprise the Internet, called the World Wide Web (WWW), intranets and networks and / or wireless networks such as cellular telephone networks, wireless LANs and / or metropolitan area networks (MAN), and wireless communications. Can communicate with other devices. Wireless communication includes Global System for Mobile Communication (GSM), Enhanced Data GSM Environment (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Bluetooth (Bluetooth), Wireless Fidelity (Wi-Fi) (e.g., IEEE802.11a, IEEE802.11b, IEEE802.11g and / or IEEE802.11n), Voice over Internet Protocol (VoIP), Wi-MAX, Email, Instant Messaging A plurality of communication standards, protocols and the like, including but not limited to, instant messaging and / or other suitable communication protocols including protocols for short text service (SMS) or communication protocols not yet developed at the time of filing of the present invention; Any of the techniques can be used.

The audio circuit 70 receives data from the interface 25, converts the received data into an electrical signal, and transmits the electrical signal to the speaker. The speaker converts the received electrical signal into a sound wave that can be heard by humans. The audio circuit 70 converts the electrical signal into audio data and transmits it to the interface 25 for processing. Audio data may be retrieved or transmitted from the memory 10 and / or the communication circuit 50 by the interface 25.

In addition, the terminal 1 may further include a microphone (not shown) connected to the audio circuit 70.

2 is a view for explaining a method for positioning in a local area network according to a first embodiment of the present invention.

Referring to FIG. 2, the terminal 1 acquires a MAC address, SSID, and signal strength from at least one wireless access device by searching for a short range wireless signal (S201). For example, the short range wireless signal may be either a WiFi signal or a Bluetooth signal.

The terminal 1 checks whether the signal strength of the radio access apparatus is greater than or equal to the first reference value (S202). Here, the first reference value may be a value between -90 dBm and -70 dBm, which can be changed by the designer according to various environments. For example, the first reference value may be -80 dBm.

If the signal strength of the radio access apparatus is greater than or equal to the first reference value, the terminal 1 checks whether the MAC address of the radio access apparatus is registered in advance (S203).

If the signal strength of the radio access device is less than the first reference value, the terminal 1 recognizes the radio access device as another radio access device and ignores it (S204).

If the MAC address of the radio access device is already registered, the terminal 1 checks the virtual area ID where the radio access device is arranged from the database 19 (S205), and if the MAC address of the radio access device is not already registered. The wireless access device is recognized as another wireless access device and ignored (S204).

The terminal 1 checks the building / floor using the virtual area ID (S206). For example, the terminal 1 checks a virtual area ID among a plurality of wireless access devices, identifies a wireless access device most located on the same floor among wireless access devices having a signal strength of a specific reference value or more, and then checks the floor. It can be identified by the floor where (1) is located. In this case, when the same number of radio access devices are identified in two layers, the floor including the radio access device having the strongest signal strength may be identified as the floor where the terminal 1 is located. Here, the specific reference value can be a value between -75dBm and -55dBm, which can be changed by the designer according to various environments. For example, a specific reference value can be -65dBm.

The terminal 1 checks the 1st signal strength radio access device and the 2nd signal strength radio access device among the plurality of radio access devices arranged in the identified building / floor (S207).

The terminal 1 checks whether the first signal strength is greater than or equal to the second reference value (S208). Here, the second reference value can be a value between -70 dBm and -50 dBm, which can be changed by the designer according to various environments. For example, the second reference value may be -60 dBm.

If the first signal strength is greater than or equal to the second reference value, the terminal 1 checks the virtual area ID of the first signal strength radio access device and moves the virtual area where the first signal strength radio access device is located to the position of the terminal 1. Check (S209).

If the first signal strength is less than the second reference value, the terminal 1 checks whether the difference between the second signal strength and the first signal strength is greater than or equal to the third reference value (S210). Here, the third reference value may be a value between -15 dBm and -5 dBm, which can be changed by the designer according to various environments. For example, the third reference value may be -10 dBm.

When the difference between the 2nd signal strength and the 1st signal strength is greater than or equal to the third reference value, the terminal 1 moves the virtual area between the 1st signal strength radio access device and the 2nd signal strength radio access device to the position of the terminal 1. Check (S211).

When the difference between the 2nd signal strength and the 1st signal strength is less than the third reference value, the terminal 1 is opposite to the virtual area where the 2nd signal strength radio access device is located, and the terminal 1 receives the external virtual area of the 1st signal strength radio access device. Check at the position of (1) (S212).

3 is a view for explaining a location confirmation method in a local area network according to a second embodiment of the present invention. The second embodiment of FIG. 3 differs from the first embodiment of FIG. 2 in that the terminal 1 checks the virtual area ID where the wireless access device is arranged from the SSID including the virtual area ID.

Referring to FIG. 3, the terminal 1 acquires a MAC address, an SSID, and a signal strength from at least one wireless access device by searching for a short range wireless signal (S301). For example, the short range wireless signal may be either a WiFi signal or a Bluetooth signal.

The terminal 1 checks whether the signal strength of the radio access apparatus is greater than or equal to the first reference value (S302). Here, the first reference value may be a value between -90 dBm and -70 dBm, which can be changed by the designer according to various environments. For example, the first reference value may be -80 dBm.

If the signal strength of the radio access apparatus is greater than or equal to the first reference value, the terminal 1 checks whether the MAC address of the radio access apparatus is registered in advance (S303).

If the signal strength of the radio access device is less than the first reference value, the terminal 1 recognizes the radio access device as another radio access device and ignores it (S304).

If the MAC address of the radio access device is already registered, the terminal 1 checks the virtual area ID where the radio access device is arranged from the SSID (S305). If the MAC address of the radio access device is not registered, the radio The connection device is recognized as another wireless access device and ignored (S304). Here, the SSID includes the virtual area ID of each radio access device.

The terminal 1 checks the building / floor using the virtual area ID (S306). For example, the terminal 1 checks a virtual area ID among a plurality of wireless access devices, identifies a wireless access device most located on the same floor among wireless access devices having a signal strength of a specific reference value or more, and then checks the floor. It can be identified by the floor where (1) is located. In this case, when the same number of radio access devices are identified in two layers, the floor including the radio access device having the strongest signal strength may be identified as the floor where the terminal 1 is located. Here, the specific reference value can be a value between -75dBm and -55dBm, which can be changed by the designer according to various environments. For example, a specific reference value can be -65dBm.

The terminal 1 checks the 1st signal strength radio access device and the 2nd signal strength radio access device among the plurality of radio access devices arranged in the identified building / floor (S307).

The terminal 1 checks whether the first signal strength is greater than or equal to the second reference value (S308). Here, the second reference value can be a value between -70 dBm and -50 dBm, which can be changed by the designer according to various environments. For example, the second reference value may be -60 dBm.

If the first signal strength is greater than or equal to the second reference value, the terminal 1 checks the virtual area ID of the first signal strength radio access device and moves the virtual area where the first signal strength radio access device is located to the position of the terminal 1. Check (S309).

If the first signal strength is less than the second reference value, the terminal 1 checks whether the difference between the second signal strength and the first signal strength is greater than or equal to the third reference value (S310). Here, the third reference value may be a value between -15 dBm and -5 dBm, which can be changed by the designer according to various environments. For example, the third reference value may be -10 dBm.

When the difference between the 2nd signal strength and the 1st signal strength is greater than or equal to the third reference value, the terminal 1 moves the virtual area between the 1st signal strength radio access device and the 2nd signal strength radio access device to the position of the terminal 1. Check (S311).

When the difference between the 2nd signal strength and the 1st signal strength is less than the third reference value, the terminal 1 is opposite to the virtual area where the 2nd signal strength radio access device is located, and the terminal 1 receives the external virtual area of the 1st signal strength radio access device. Check at the position of (1) (S312).

4 to 6 are divided into 30 virtual areas in the same layer 400, and virtual area IDs (for example, A-1 to A-6, B-1 to B-6, and C) are assigned to each virtual area. -1 to C-6, D-1 to D-6, E-1 to E-6, and nine wireless access devices (for example, WiFi APs) are arranged in an arbitrary virtual area (first The wireless access device to the ninth wireless access device) will be described as an example of a method for identifying the location of the terminal according to the signal strength of the wireless access device.

Hereinafter, a case where the first reference value is set to -80 dBm, the second reference value is -60 dBm, and the third reference value is -10 dBm will be described as an example.

4 is a view for explaining a first embodiment of a method for locating a terminal in a local area network of the present invention. Here, the case where the user is located in A-3 with the terminal 1. That is, the terminal 1 is located at A-3.

The signal strength of the first wireless access device 410 searched by the terminal 1 is -75 dBm, the signal strength of the second wireless access device 420 is -58 dBm, the signal strength of the third wireless access device 430 is -78 dBm, and 5 The radio connection device 450 signal strength is -76dBm. The signal strength of other radio access equipment is less than -80dBm, which is the first reference value.

Since the signal strength of the second wireless access device 420 which is the first signal strength is -58 dBm and the second reference value is -60 dBm or more, the terminal 1 can confirm that the terminal 1 is located at A-3. Here, the terminal 1 confirms the location by confirming the virtual area ID which the MAC address has already registered and confirmed from the database, or the virtual area ID confirmed from the received SSID.

5 is a view for explaining a second embodiment of a method for locating a terminal in a local area network of the present invention. Here, the case where the user is located in A-2 with the terminal 1. That is, the terminal 1 is located at A-2.

The signal strength of the first wireless access device 410 searched by the terminal 1 is -63 dBm, the signal strength of the second wireless access device 420 is -71 dBm, and the signal strength of the fourth wireless access device 440 is -77 dBm, 5 The radio connection device 450 signal strength is -78dBm. The signal strength of other radio access equipment is less than -80dBm, which is the first reference value.

Since the signal strength of the first wireless access device 410 of the first signal strength is -63 dBm and less than -60 dBm of the second reference value, the terminal 1 is connected to the first wireless access device 410 of the first signal strength wireless access device. The second wireless access device 420, which is the second signal strength wireless access device, is checked.

The terminal 1 checks -8 dBm by calculating the difference between the 2nd signal strength and the 1st signal strength, and since -8 dBm is greater than or equal to -10 dBm as a third reference value, A-2 between A-1 and A-3. Check as the position of the terminal (1). Here, the terminal 1 confirms the location by confirming the virtual area ID which the MAC address has already registered and confirmed from the database, or the virtual area ID confirmed from the received SSID.

6 is a view for explaining a third embodiment of a method for locating a terminal in a local area network of the present invention. In this case, the user is located in A-6 with the terminal 1. That is, the terminal 1 is located at A-6.

The signal strength of the second wireless access device 420 searched by the terminal 1 is -78 dBm, the signal strength of the third wireless access device 430 is -63 dBm, and the signal strength of the sixth wireless access device 460 is -79 dBm. The signal strength of other radio access equipment is less than -80dBm, which is the first reference value.

Since the signal strength of the first wireless access device 430, which is the first signal strength, is -63 dBm and less than -60 dBm, which is the second reference value, The third wireless access device 430, which is the first signal strength wireless access device, and the second wireless access device 420, which is a second signal strength wireless access device, are identified.

The terminal 1 checks -15 dBm by calculating the difference between the 2nd signal strength and the 1st signal strength, and since -15 dBm is less than -10 dBm as the third reference value, the second wireless access device that is the 2nd signal strength wireless access device. It is confirmed that the terminal 1 is located on the opposite side to the virtual region A-3 where the 420 is disposed and is located in the external virtual region A-6 of A-5. Here, the terminal 1 confirms the location by confirming the virtual area ID which the MAC address has already registered and confirmed from the database, or the virtual area ID confirmed from the received SSID.

Note that the present invention is also applicable to the case of different floors in the same building.

The method according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, and the like, alone or in combination. Programs (program instructions) recorded on the recording medium may be those specially designed and configured for the present invention, or may be known and available to those skilled in computer software. Examples of the computer-readable recording medium include magnetic media such as a hard disk, a floppy disk and a magnetic tape, optical media such as a CDROM and a DVD, magneto-optical media such as a floppy disk, Hardware devices that are specifically configured to store and execute program instructions such as magneto-optical media, ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be appreciated that one embodiment is possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the claims.

1: terminal
10: Memory
11: operating system
13: communication module
15: positioning module
17: Application
19: Database
21: memory controller
23: central processing unit
25: interface
30: display device
40: input device
50: communication circuit
60: external port
70: audio circuit
410, 420, 430, 440, 450, 460, 470, 480, 490: wireless access device

Claims (11)

In the method for the terminal including the positioning module to identify the location in the local area wireless communication network,
Searching for a short range wireless signal to obtain a MAC address, an SSID, and a signal strength from at least one wireless access device;
If the signal strength of the radio access device is greater than or equal to a first reference value and the MAC address of the radio access device is already registered, checking the virtual area ID of the radio access device;
Identifying a building / floor using the virtual area ID;
Identifying a first signal strength radio access device and a second signal strength radio access device among the radio access devices arranged in the building / floor,
If the first signal strength is greater than or equal to a second reference value, identifying the virtual area where the first signal strength wireless access device is disposed as the location of the terminal. In the method for the terminal including the positioning module to identify the location in the local area wireless communication network,
Searching for a short range wireless signal to obtain a MAC address, an SSID, and a signal strength from at least one wireless access device;
If the signal strength of the radio access device is equal to or greater than a first reference value and the MAC address of the radio access device is registered, confirming a virtual area ID where the radio access device is arranged from the SSID;
Identifying a building / floor using the virtual area ID;
Identifying a first signal strength radio access device and a second signal strength radio access device among the radio access devices arranged in the building / floor,
If the first signal strength is greater than or equal to a second reference value, identifying the virtual area where the first signal strength wireless access device is disposed as the location of the terminal. 3. The method according to claim 1 or 2,
If the first signal strength is less than a second reference value, determining whether a difference between the second signal strength and the first signal strength is greater than or equal to a third reference value;
If the difference between the second signal strength and the first signal strength is greater than or equal to a third reference value, identifying a virtual area between the first signal strength radio access device and the second signal strength radio access device as a location of a terminal;
When the difference between the second signal strength and the first signal strength is less than a third reference value, the second signal strength is opposite to the virtual area in which the wireless access device is located, and the external virtual area of the first signal strength wireless access device is connected to the terminal. Positioning method in a local area network comprising the step of identifying by location. The method of claim 3,
Wherein the first reference value is a value between -90 dBm and -70 dBm, the second reference value is between -70 dBm and -50 dBm, and the third reference value is between -15 dBm and -5 dBm. The method of claim 3, wherein
The short range wireless signal is a local area communication method of any one of a WiFi signal or a Bluetooth signal. The method of claim 1,
If the signal strength of the radio access device is greater than or equal to a first reference value and the MAC address of the radio access device is already registered, the step of checking the virtual area ID where the radio access device is arranged is performed in a database of the terminal. And determining a virtual area ID stored for each MAC address. Search for a near field radio signal to obtain a MAC address, SSID, and signal strength from at least one radio access device, wherein the signal strength of the radio access device is greater than or equal to a first reference value, and the MAC address of the radio access device is pre-registered. If yes, confirm the virtual area ID where the radio access device is arranged, identify the building / floor using the virtual area ID, and place the first signal strength radio access device among the radio access devices arranged in the building / floor. And a positioning module for checking the second signal strength wireless access device and checking the virtual area where the first signal strength wireless access device is disposed as the location of the terminal, when the first signal strength is greater than or equal to a second reference value.
And a local area network including a database including the virtual area ID stored for each MAC address. Communication module,
Search for a near field radio signal to obtain a MAC address, SSID, and signal strength from at least one radio access device, wherein the signal strength of the radio access device is greater than or equal to a first reference value, and the MAC address of the radio access device is pre-registered. Check the virtual area ID where the wireless access device is located from the SSID, identify the building / floor using the virtual area ID, and place the first signal strength among the wireless access devices arranged in the building / floor. A positioning module for checking a radio access device and a second signal strength radio access device, and checking the virtual area where the first signal strength radio access device is disposed as a position of the terminal when the first signal strength is greater than or equal to a second reference value. Positioning device in the local area network comprising a. 9. The method according to claim 7 or 8,
The positioning module checks whether a difference between the second signal strength and the first signal strength is greater than or equal to a third reference value when the first signal strength is less than a second reference value, and the second signal strength and the first signal If the difference in intensity is greater than or equal to the third reference value, the virtual area between the first signal strength radio access device and the second signal strength radio access device is identified as the position of the terminal, and the second signal strength and the first signal strength are determined. If the difference is less than the third reference value, the location on the local area network on the opposite side to the virtual area where the second signal strength radio access device is located, and confirms the external virtual area of the first signal strength radio access device as the position of the terminal. 10. The method of claim 9,
Wherein the first reference value is a value between -90 dBm and -70 dBm, the second reference value is a value between -70 dBm and -50 dBm, and the third reference value is a value between -15 dBm and -5 dBm. A computer-readable recording medium having recorded thereon a program for performing a positioning method in a local area network of claim 1.

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