KR20160117061A - Method and mobile device for localizing indoor using virtual access point and access point - Google Patents

Abstract

A method for setting an internal location comprises the following steps of: receiving a signal broadcast from at least one AP; listing an SSID of the at least one AP based on the received signal; extracting a location identifier included in the listed SSID; and setting a current location of a mobile terminal based on location information in the extracted location identifier.

Description

A method for setting indoor location, a mobile terminal, and a method for setting indoor location,

The present invention relates to a method of setting indoor locations and to a mobile terminal and an AP.

With the development of information and communication technology, location-based services that provide location information to users through mobile communication network or GPS have been used in various programs and applications, and GPS has been used to grasp the location of users. However, since the GPS is not easy to use in the building, the method of collecting or estimating the position of the user using the fingerprint method using the UWB, the RFID, the infrared ray or the WLAN AP in the recent years is used and studied .

The fingerprint method is a method of performing terminal-based position estimation using a fingerprint database generated from a WLAN AP in the room. That is, the fingerprint method is a method of collecting information of a radio signal level in a service area before estimating a position to construct a database, and estimating a position of a collection point having a radio signal level most similar when a position is requested as a current position, (NLOS) can provide good performance in many environments. However, in order to use the fingerprint method, since the capacity of the database is large and the amount of calculation is large, it is necessary to estimate the position of the terminal based on the server while being stored in the server. Cost, management and use are not easy. The background technology of the present application is disclosed in Korean Patent Laid-Open Publication No. 10-2014-0077763.

The present invention provides a method for receiving an SSID including location information broadcasted from an AP and setting an indoor location where a current location can be set using location information, AP.

Also, the present invention provides a first SSID for connection from the AP to the BSS and a second SSID for providing location information, thereby providing a method for locating the location indoors without building a database or constructing a separate infrastructure, .

The present invention also relates to a method for enabling a location to be continuously checked even if the mobile terminal is moved by setting only the connection from the AP to the first SSID to be possible, setting the security to disable access to the second SSID, and setting the first SSID to be the same And a mobile terminal and an AP.

It is to be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to an aspect of the present invention, there is provided a method for establishing a location in a mobile terminal, the method comprising: receiving a broadcasting signal from at least one AP; Listing the SSID of at least one AP, extracting a location identifier included in the listed SSID, and setting a current location of the mobile terminal based on location information in the extracted location identifier .

According to an embodiment of the present invention, the at least one AP is configured to provide a mobility of a mobile node in an extended service set (ESS) composed of a basic service set (BSS) Can be the same.

According to an example of this embodiment, the at least one AP may include a second SSID that is capable of scanning for extraction of the location identifier at the mobile terminal but is not accessible.

According to one example of this embodiment, the second SSID may include information based on latitude, longitude, and floor.

According to an embodiment of the present invention, the step of setting the current location of the mobile terminal based on the location information in the extracted location identifier may further include, when the listed at least one AP is a single number, Can be set to the current location of the mobile terminal.

According to an embodiment of the present invention, the step of setting the current location of the mobile terminal based on the location information in the extracted location identifier may further include, when the listed at least one AP is a single AP, And the RSSI (Received Signal Strength Indication) between the mobile terminal and the mobile terminal.

According to an embodiment of the present invention, the step of setting the current location of the mobile terminal based on the location information in the extracted location identifier may further include, when the listed at least one AP is a plurality of APs, And setting the current position based on the triangulation using RSSI between the mobile terminal and the mobile terminal.

According to an embodiment of the present invention, when a confirmation event for confirming the current location of the mobile terminal occurs, the mobile terminal can share the current location set by the mobile terminal.

According to an aspect of the present invention, there is provided a mobile terminal for receiving a signal broadcast from at least one AP, An extracting unit for listing the SSID of the AP, extracting a location identifier included in the listed SSID, and a current location of the mobile terminal based on location information in the extracted location identifier.

As a technical means for achieving the above technical object, there is provided a method for indoor positioning of a mobile terminal executed in at least one AP, comprising the steps of: receiving a scanning signal for searching at least one AP from a mobile terminal; And broadcasting the information including the SSID including the location information in the location identifier to the mobile terminal, wherein the at least one AP includes a first SSID to which the mobile terminal is connectable, And may operate as a virtual AP having a second SSID including the location information.

The above-described task solution is merely exemplary and should not be construed as limiting the present disclosure. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and the detailed description of the invention.

According to an aspect of the present invention, there is provided a method for receiving an SSID including location information broadcasted from an AP, setting an indoor location where a current location can be set using location information, and providing a mobile terminal and an AP .

Also, the present invention provides a first SSID for connection from the AP to the BSS and a second SSID for providing location information, thereby providing a method for locating the location indoors without building a database or constructing a separate infrastructure, .

The present invention also relates to a method for enabling a location to be continuously checked even if the mobile terminal is moved by setting only the connection from the AP to the first SSID to be possible, setting the security to disable access to the second SSID, and setting the first SSID to be the same A mobile terminal and an AP.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an indoor positioning system according to an embodiment of the present invention; FIG.
2 illustrates a mobile terminal according to one embodiment of the present invention.
3 is a view for explaining an example of a process of setting and displaying a location in a mobile terminal located indoors using a first SSID and a second SSID.
FIG. 4 is a diagram for explaining an example of a process of reducing an error that may occur when positioning based on RSSI between at least one AP and a mobile terminal using triangulation.
5 is a diagram for explaining an example in which a mobile terminal is connected in an indoor positioning system provided with an ESS.
6 is a flowchart illustrating an indoor positioning method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

Throughout this specification, when a member is " on " another member, it includes not only when the member is in contact with the other member, but also when there is another member between the two members.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

The terms "about "," substantially ", etc. used to the extent that they are used throughout the specification are intended to be taken to mean the approximation of the manufacturing and material tolerances inherent in the stated sense, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure. The word " step (or step) "or" step "used to the extent that it is used throughout the specification does not mean" step for.

In this specification, the term " part " includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Further, one unit may be implemented using two or more hardware, or two or more units may be implemented by one hardware.

In the present description, some of the operations or functions described as being performed by a terminal, a device, or a device may be performed instead in a server connected to the terminal, device, or device. Likewise, some of the operations or functions described as being performed by the server may also be performed in a terminal, device or device connected to the server. Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an indoor positioning system according to an embodiment of the present invention; FIG. Referring to FIG. 1, the indoor positioning system 1 includes a mobile terminal 100 and at least one access point (AP) 200. However, since the mobile terminal 100 and the at least one AP of Fig. 1 are merely an example of the present invention, according to various embodiments of the present invention, the indoor positioning system may be configured differently from Fig.

Each configuration of Fig. 1 may be connected via a network. In this case, the network means a connection structure in which information can be exchanged between respective nodes such as a plurality of terminals and servers. One example of such a network is a 3rd Generation Partnership Project (3GPP) network, a Long Term Evolution (LTE) Network, a World Interoperability for Microwave Access (WIMAX) network, the Internet, a LAN, a Wireless Local Area Network (WAN), a Wide Area Network (WAN), a Personal Area Network (PAN), a Bluetooth ) Network, a satellite broadcast network, an analog broadcast network, a DMB (Digital Multimedia Broadcasting) network, and the like.

The mobile terminal 100 collects SSID (Service Set Identifier) and RSSI (Received Signal Strength Indication) of at least one AP 200 through scanning of a radio signal, and transmits the collected at least one AP 200 May be a terminal accessing to the AP 200 having the largest RSSI size.

The mobile terminal 100 may be a terminal that estimates the location of the connected AP 200 as its own location. For this, the mobile terminal 100 may use the location information in the location identifier included in the second SSID of the connected AP 200's SSID. At this time, the second SSID may include not only two-dimensional position information but also three-dimensional position information. For example, if the mobile terminal 100 is located in a building, the location information may include the number of floors, and the mobile terminal 100 may determine the number of floors included in the second SSID of the connected AP 200 By using the location information, not only the location where the user is located but also the number of layers can be grasped.

The mobile terminal 100 estimates the position of the AP 200 as its own position using the position information of the AP 200 when the scanned AP 200 is a single number, The error can be minimized based on the triangulation method.

When the mobile terminal 100 requests location information from a web page, an application page, a program or an application driven by the mobile terminal 100, the mobile terminal 100 transmits location information based on the second SSID collected from at least one AP 200 to itself As shown in FIG. Accordingly, the mobile terminal 100 can transmit location information to a web page, an app page, a program, or an application that requires its location, even when the GPS is not in the room or the GPS is not running.

The mobile terminal 100 may be implemented as a portable terminal that can access a remote server through a network. Here, the portable terminal is a mobile communication device that is guaranteed to be portable and mobility. For example, a portable communication terminal such as a PCS (Personal Communication System), a GSM (Global System for Mobile communication), a PDC (Personal Digital Cellular), a PHS (Personal Digital Assistant), IMT (International Mobile Telecommunication) -2000, CDMA (Code Division Multiple Access) -2000, W-CDMA (W-CDMA), Wibro (Wireless Broadband Internet) , A smart pad, a tablet PC, and the like.

The mobile terminal 100 may further include a device supporting Near Field Communication (NFC) or a device capable of being connected via a network such as a PC. However, since the type of the mobile terminal 100 shown in FIG. 1 is merely an example for convenience of explanation, the type and the type of the mobile terminal 100 discussed herein are not limited to being illustrated in FIG. 1 .

At least one AP 200 may be a device that broadcasts its information to the mobile terminal 100. Here, the at least one AP 200 may be a device having a plurality of SSIDs, and may be implemented as an apparatus having a first SSID and a second SSID in one embodiment of the present invention.

In this case, the first SSID is a unique identifier existing in all headers transmitted through the wireless LAN. When the mobile terminal 100, which is a wireless LAN client, accesses a basic service set (BSS), each wireless LAN is distinguished from other wireless LANs . The second SSID can be used to indicate the location of at least one AP 200, and security can be set so that the mobile terminal 100 can only scan and access. Here, the second SSID may include location information, and may be included in a location identifier for identifying the location information and may be set to be displayed on the mobile terminal 100. As described above, the second SSID includes the number of layers in the position information so that not only two-dimensional position information but also three-dimensional position information can be distinguished.

Hereinafter, each configuration of FIG. 1 will be described in detail.

2 illustrates a mobile terminal according to one embodiment of the present invention. Referring to FIG. 2, the mobile terminal 100 may include a receiving unit 110, a listing unit 120, an extracting unit 130, and a setting unit 140. However, the configuration of FIG. 2 may be changed according to each of the various embodiments of the present invention.

The receiving unit 110 may receive a broadcasting signal from at least one AP 200. [ At this time, the mobile terminal 100 can activate WIFI for AP search and receive signals from at least one AP 200 through the WIFI.

The listing unit 120 may list the SSID of at least one AP 200 based on the received signal. The listing unit 120 may sort the SSID of at least one AP 200 based on the RSSI strength between the mobile terminal 100 and the at least one AP 200. Then, the listing section 120 can sort the RSSIs in descending order of size. In this case, the SSID may include a first SSID, which is an identifier used when the mobile terminal 100 connects, and a second SSID, which is used to set the location. Here, the second SSID may include latitude, longitude, and layer information. At this time, latitude, longitude and layer information can be distinguished by a location identifier. For example, the location identifier may be {,}.

The extracting unit 130 may extract a location identifier included in the listed SSID. Here, the extractor 130 must determine the location of at least one AP 200 in order to set the location of the mobile terminal 100. Accordingly, in order to distinguish and acquire the location information, the extracting unit 130 may extract the location identifier included in the second SSID.

The setting unit 140 can set the current location of the mobile terminal 100 based on the location information in the extracted location identifier. Here, at least one AP 200 may include a second SSID that can be scanned for extraction of a location identifier in the mobile terminal 100, but can not be accessed. Therefore, at least one AP 200 can set the scanning of the second SSID to extract the location identifier from the extracting unit 130 and obtain the location information, but can not access the second SSID. At least one AP 200 may be a virtual AP having a first SSID for identification and a second SSID for location acquisition when the mobile terminal 100 accesses the BSS.

In addition, at least one AP 200 has a first SSID of at least one AP 200 to provide mobility of a mobile node in an ESS (Extendted Service Set) composed of a BSS (Basic Service Set) can do. That is, the first SSID serves to distinguish one wireless LAN from another wireless LAN, and when the first SSID is changed, the mobile terminal 100 can not access the corresponding BSS, The connection and the position can be confirmed by the same first SSID.

The setting unit 140 may set the current location of the mobile terminal 100 based on the location information in the extracted location identifier so that when the at least one listed AP 200 is singular, The location information may be set to the current location of the mobile terminal 100. The setting unit 140 sets the current location based on the RSSI (Received Signal Strength Indication) between the location information and the AP of the at least one AP 200 and the mobile terminal 100 when the listed APs 200 are singular It is possible.

When setting the current position of the mobile terminal 100 based on the extracted position information, the setting unit 140 sets the current position of the mobile terminal 100 in the case of a plurality of listed at least one AP 200, The current location can be set based on the triangulation method using the RSSI between the AP and the mobile terminal 100. Since the position of at least one AP 200 is fixed, an RSSI value corresponding to each position and corresponding position data are mapped into a database, and when a plurality of APs are detected by the mobile terminal 100, An accurate position may be set using a plurality of RSSIs and SSIDs.

When the current position is set in the mobile terminal 100 and a confirmation event for confirming the current position of the mobile terminal 100 occurs, the current position set in the mobile terminal 100 may be shared.

A method of setting an indoor position according to an embodiment of the present invention, which is executed in a mobile terminal having the above-described configuration, will be described with reference to FIGS. 3 to 5 below.

3 is a view for explaining an example of a process of setting and displaying a location in a mobile terminal located indoors using a first SSID and a second SSID, FIG. 5 is a view for explaining an example in which a mobile terminal is connected in an indoor positioning system provided with an ESS; FIG.

Referring to FIG. 3, it is assumed that an SSID according to an embodiment of the present invention is set as shown in Table 1 below.

Symbol Description {,}  The location identifier of SSID 2 SSID 1  Wireless Internet Network Name SSID 2  Wireless Internet Network Name, {latitude, longitude, floor}

In this case, if the mobile terminal 100 is located as shown in (a), the list as shown in (b) can be listed up on the mobile terminal 100. At this time, it can be seen that the AP 200 (1) maintains a closer distance with no obstacle. Accordingly, the mobile terminal 100 can extract latitude = 51.518996, longitude = -0.126431, and layer = 3 in the location identifier {51.518996, -0.126431, 3} of AP 200 (1). The extracted position information can be displayed in association with the map as shown in (c), and three-dimensional information can be displayed by displaying not only two-dimensional coordinates but also the layer number.

Referring to FIG. 4, it can be seen that (a) the position error decreases as the number of at least one AP 200 increases. That is, since the mobile terminal 100 estimates the position of at least one AP 200 as its own position, but does not measure its own position accurately, an error will occur. Therefore, when setting the position of the mobile terminal 100 based on the position of at least one AP 200 based on the RSSI and (b) the pass loss in one embodiment of the present invention, (C) Triangulation can be used to minimize the number of points.

Referring to FIG. 5, the first SSID is used in the same campus as shown in FIG. 5A, so that even if the mobile terminal 100 moves, it can access the BSS to continuously check its position. Accordingly, even if the mobile terminal 100 moves from one position to another position in one campus, (b) it can accurately grasp its position in the room.

6 is a flowchart illustrating an indoor positioning method according to an embodiment of the present invention. Referring to FIG. 6, the receiving unit 110 receives a broadcasting signal from at least one AP 200 in step S6100.

In step S6200, the listing unit 120 lists the SSID of at least one AP 200 based on the received signal. In step S6300, the extracting unit 130 extracts a location identifier .

Finally, in step S6400, the setting unit 140 sets the current location of the mobile terminal 100 based on the location information in the extracted location identifier.

In the above description, steps S6100 to S6400 may be further divided into additional steps or combined into fewer steps, according to embodiments of the present disclosure. Also, some of the steps may be omitted as necessary, and the order between the steps may be changed.

The indoor positioning method according to the embodiment described with reference to FIG. 6 may be implemented in the form of a recording medium including instructions executable by a computer such as a program module executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium can include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed in a similar fashion may also be implemented.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: mobile terminal
110:
120: Listing
130:
140: Setting section
200: At least one AP

Claims (10)

1. A method for setting a location in a room running in a mobile terminal,
The method comprising: receiving a signal broadcast from at least one AP;
Listing the SSID of the at least one AP based on the received signal;
Extracting a location identifier included in the listed SSID; And
And setting a current location of the mobile terminal based on location information in the extracted location identifier.
The method according to claim 1,
Wherein the at least one AP is the same as the first SSID of the at least one AP to provide mobility of the mobile node in an Extensible Service Set (ESS) configured with a Basic Service Set (BSS).
The method according to claim 1,
Wherein the at least one AP includes a second SSID that is capable of scanning for extraction of the location identifier at the mobile terminal but is not accessible.
The method of claim 3,
Wherein the second SSID comprises information based on latitude, longitude and Floor.
The method according to claim 1,
Wherein the step of setting a current location of the mobile terminal based on location information in the extracted location identifier comprises:
And setting location information of the AP to the current location of the mobile terminal if the listed at least one AP is a singular number.
The method according to claim 1,
Wherein the step of setting a current location of the mobile terminal based on location information in the extracted location identifier comprises:
And if the listed at least one AP is a singular, then setting the current location based on the location information and the received signal strength indication (RSSI) between the AP and the mobile terminal.
The method according to claim 1,
Wherein the step of setting a current location of the mobile terminal based on location information in the extracted location identifier comprises:
And if the listed at least one AP is a plurality, the current location is set based on the location information and a triangulation using RSSI between the plurality of APs and the mobile terminal.
The method according to claim 1,
And when the confirmation event for confirming the current location of the mobile terminal occurs, sharing the current location set by the mobile terminal.
A mobile terminal for setting a location in a room,
A receiving unit for receiving a signal broadcasted from at least one AP;
A listing unit for listing the SSID of the at least one AP based on the received signal;
An extracting unit for extracting a location identifier included in the listed SSID; And
And a setting unit configured to set a current location of the mobile terminal based on location information in the extracted location identifier.
A method of setting an indoor location of a mobile terminal, the method comprising:
Receiving a scanning signal to retrieve at least one AP from a mobile terminal;
Broadcasting information including an SSID including location information in a location identifier to the mobile terminal in response to the scanning signal;
Lt; / RTI >
Wherein the at least one AP operates as a virtual AP having a first SSID to which the mobile terminal is connectable and a second SSID to which the mobile terminal is not connectable and which includes the location information.

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