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KR20110137068A - System and method for producing location information using wifi terminal - Google Patents

System and method for producing location information using wifi terminal Download PDF

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Publication number
KR20110137068A
KR20110137068A KR1020100057073A KR20100057073A KR20110137068A KR 20110137068 A KR20110137068 A KR 20110137068A KR 1020100057073 A KR1020100057073 A KR 1020100057073A KR 20100057073 A KR20100057073 A KR 20100057073A KR 20110137068 A KR20110137068 A KR 20110137068A
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KR
South Korea
Prior art keywords
wifi terminal
server
address
terminal
wats
Prior art date
Application number
KR1020100057073A
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Korean (ko)
Inventor
김철우
박순석
Original Assignee
(주)아크로퓨처
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Publication date
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Priority to KR1020100057073A priority Critical patent/KR20110137068A/en
Publication of KR20110137068A publication Critical patent/KR20110137068A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: A system and a method for producing location information using WiFi terminal are provided to obtain the location information of a WiFi terminal by utilizing a DHCP(Dynamic Host Configuration Protocol) server, a facility DB, a terminal information DB. CONSTITUTION: A DHCP data sink(11) receives an IP lending request signal, a MAC address of a WiFi terminal, and an IP address of AP through an AP(Access Point) from the WiFi terminal. The DHCP data source(12) provides a predetermined IP to the WiFi terminal. The DHCP data transmitting unit provides the IP address of the AP and the MAC address of the WiFi terminal in a WATS(WLAN(Wireless Local Area Network) Access Triggering System) server. A DHCP IP forming unit(13) forms the IP address which is available for lending according to the IP lend request.

Description

System and method for providing location information using WiFi terminal {System and method for producing location information using WiFi terminal}

The present invention is a system and method for providing location information of a Wi-Fi terminal, such as a smartphone, more specifically, using the access point (Access Point) to grasp the location information of the Wi-Fi terminal, and provides the identified location information to various devices A system and a method for using the identified location information of the Wi-Fi terminal for various services.

Wireless LAN technology, unlike a conventional LAN (Local Access Network) that communicates by connecting terminal devices using a cable, is a network technology that can transmit and receive data without a cable between terminals at a certain distance, and is a standard of technology. There are various technologies such as IEEE802.11, IEEE802.11a, IEEE802.11b, IEEE802.11g, IEEE802.11n.

On the other hand, in recent years, the wireless LAN is in business and the price is getting cheaper. The basic operation type of wireless LAN is Bridge mode which operates by simply extending the wired LAN to wireless section, and a separate protocol is installed so that authentication and dynamic host configuration protocol (hereinafter referred to as DHCP: Dynamic Host Configuration Protocol) The client and server functions have a function of receiving a public Internet Protocol (IP) address from a public network and assigning a private IP address to a terminal.

In this case, a WLAN access point (hereinafter referred to as an AP) provides a connection function between a WLAN terminal and a wired LAN. In addition to the relay function between the wireless LAN and the wired LAN, the AP has a built-in wired LAN hub so that a wired port can be connected to a printer or a desktop PC which is placed in a fixed location without the need for mobility. Portable terminals such as PDAs, notebooks, and smartphones have a wireless LAN function that allows wireless LAN access.

DHCP is a communication protocol designed to automatically assign and manage configuration information required when using the TCP / IP protocol in the Internet Engineering Task Force (IETF). It is defined in RFC1541 and RFC2131. It is a protocol that allows you to centrally manage and assign IP addresses. In the TCP / IP protocol of the Internet, each computer must have a unique IP address to access the Internet. When computer users in an organization access the Internet, an IP address must be assigned to each computer. If you are not using DHCP, each computer must be manually entered with an IP address, and if the computer is moved to a different part of the network, a new IP address must be entered. DHCP allows network administrators to centrally manage and assign IP addresses, and to automatically send new IP addresses when computers connect to other places on the network.

DHCP uses the concept of "lease", which allows a given IP address to be valid for that computer for only a certain amount of time. The lease time may vary depending on how long the user will need to access the Internet at a particular location. DHCP is especially useful in environments like schools where users change frequently. DHCP can dynamically reconfigure the network by shortening the lease time of IP addresses even if there are more computers than the number of available IP addresses. Provide static addresses for web servers that require permanent IP addresses.

Recently, as the spread of smartphones equipped with wireless LAN technology is spreading, related technologies using WLAN signals are rapidly developing, and one of them is a Wi-Fi positioning system (WPS). The WPS compares the technology of obtaining the wireless AP information, the technology of optimizing the obtained AP information to build the database, the technology of obtaining the necessary information from the user's mobile device, and the obtained wireless AP information and the information in the constructed database. It consists of the technique of getting the position.

However, in the conventional WPS method, the AP information must be collected through field inspection of a corresponding region by using a scanning vehicle for positioning, and the collected AP information must be stored and managed in a database. In addition, since the AP information may change from time to time even after the initial AP database construction, the AP information should be updated periodically and continuously through field visits. However, since the construction and maintenance of the database for the AP requires a lot of time and cost, the conventional WPS method has a disadvantage in that it takes a lot of cost to commercialize and maintain a quality of service.

In addition, the conventional WPS method is only to accurately determine the location of the Wi-Fi terminal, and then inform the predetermined user. This conventional method can accurately inform the user of the location of the Wi-Fi terminal, Since the location is merely a coordinate of latitude and longitude, there is a disadvantage in that it is not suitable for providing various location based services (LBS services) using the location of the Wifi terminal.

Accordingly, the present invention provides a system and method for acquiring location information of a Wifi terminal using a DHCP server, a facility DB, and a terminal information DB, which are infrastructure systems of a wide area WiFi service provider, without collecting information of a separate Wifi AP. It aims to provide.

In addition, an object of the present invention is to provide a system and method that can provide the location information of the Wi-Fi terminal to the location-based service system by actively detecting the entry and exit of the Wi-Fi terminal into and out of a specific AP area in real time. do.

In addition, an object of the present invention is to provide a system and method that can easily determine the location of the Wifi terminal, and can provide a variety of LBS services according to the location of the Wifi terminal.

System for providing location information of a Wi-Fi terminal according to the present invention for achieving the above object:

A DHCP server for receiving a predetermined IP from a WiFi terminal through a predetermined AP and providing the predetermined IP to the WiFi terminal, and a WLan Access Triggering System (WATS) server interworking with the DHCP server; As a location information providing system of a WiFi terminal including a DB server for providing predetermined data to the WATS server,

The DHCP server provides a DHCP data receiving unit for receiving an IP rental request signal from the WiFi terminal, a MAC address of the WiFi terminal, and an IP address of the AP through the AP, and a predetermined IP for the WiFi terminal. The WATS server includes a DHCP data transmitter for providing the MAC address of the WiFi terminal and the IP address of the AP, and a DHCP IP forming unit for forming a predetermined IP address that can be rented according to the IP rental request.

The WATS server includes a WATS data receiving unit receiving the MAC address of the WiFi terminal and the IP address of the AP from the DHCP server, and the WiFi terminal information corresponding to the MAC address and the IP address of the AP in conjunction with the DB server. And a WATS location checking unit for confirming location information of the corresponding AP, and a WATS data transmitter for providing the WiFi terminal information and the location information of the AP to the outside.

In addition, the data provided by the WATS data transmission unit is preferably provided to the LBS server.

In this case, the LBS server checks at least one service content corresponding to the IP address of the AP through the LBS data receiving unit for receiving the WiFi terminal information and the location information of the AP from the WATS server, and a predetermined DB And a service confirmation unit and an LBS data transmitter for providing the identified service to an external terminal.

In this case, the external terminal may be the WiFi terminal.

DB for providing a predetermined IP to the WiFi terminal, a DHCP server providing a predetermined IP to the WiFi terminal, a WATS server interworking with the DHCP server, and providing the predetermined data to the WATS server through a predetermined AP. A location information providing method of a WiFi terminal driven by a system including a server,

The DHCP server is:

Receive a request to rent a certain IP to a specific WiFi terminal from a predetermined AP, receives the Mac address of the WiFi terminal and the IP address of the AP from the AP,

The DHCP server forms a predetermined IP address that can be rented according to the IP rental request,

Providing a MAC address of the WiFi terminal and an IP address of the AP to the WATS server;

The WATS server is:

Receiving the MAC address of the WiFi terminal and the IP address of the AP from the DHCP server,

Check the WiFi terminal information corresponding to the MAC address and the location information of the AP corresponding to the IP address of the AP in association with the DB server;

A second step of providing the WiFi terminal information and the location information of the AP to the outside

Characterized in that it comprises a.

In addition, the WiFi terminal information of the second step and the location information of the AP is provided to the LBS server,

When the LBS server receives the WiFi terminal information and the location information of the AP from the WATS server, the LBS server checks at least one service content corresponding to the IP address of the AP through a predetermined DB, and externally checks the identified service. And a third step of providing the terminal.

Further, following the first step, the DHCP server receives a request for re-lease of the rented IP from the WiFi terminal at predetermined time intervals, and re-leases the rented IP in response to the re-rent request. It is preferable to further include.

In addition, if the DHCP server does not receive the re-rent request within a predetermined time, preferably further comprises the step of terminating the rental of the IP.

The DHCP server may provide the WATS server with the MAC address of the WiFi terminal whose IP rental is terminated and the IP address of the AP communicating with the WiFi terminal, and the WATS server provides the LBS server with the MAC address of the WiFi terminal. Provides the WiFi terminal information corresponding to the AP information and the AP information corresponding to the IP address of the AP communicating with the WiFi terminal, and the LBS server checks at least one service content corresponding to the termination of the IP rental from the WATS server. The method may further include providing the identified service to the WiFi terminal.

In addition, the service provided to the WiFi terminal may be a predetermined mobile or Internet coupon.

In addition, the external terminal may be the WiFi terminal.

Alternatively, the external terminal may be a portable terminal of another user or a predetermined server device.

The positioning system and method according to the present invention acquires the location information of the Wifi terminal by utilizing a DHCP server, an AP location information DB, a terminal information DB, and the like, which is an infrastructure system of a wide area WiFi service provider, without collecting information of the AP for Wifi. Since the location of the WiFi terminal can be obtained cheaply and easily.

In addition, according to the present invention, since the Wifi terminal can detect the entry and exit of the specific AP area actively and in real time, various customized services can be provided to the user using the LBS.

1 is a diagram showing a schematic configuration of a system for providing location information according to a preferred embodiment of the present invention.
2 is a diagram illustrating a schematic configuration of a DHCP server.
3 is a diagram illustrating a schematic configuration of a WATS server.
4 is a diagram illustrating a schematic configuration of a DB server.
5 is a diagram illustrating a schematic configuration of an LBS server.
6 and 7 are diagrams showing a schematic procedure of a method for providing location information according to a preferred embodiment of the present invention.

With reference to the accompanying drawings, a system and method for providing location information of a WiFi terminal according to a preferred embodiment of the present invention will be described below. Meanwhile, the components described below are classified for convenience of description and may be formed by combining a plurality of components into one, or may be configured by separating one component into a plurality.

1 is a diagram schematically showing a configuration of a system for providing location information of a WiFi terminal according to an exemplary embodiment of the present invention.

As shown in FIG. 1, the system for providing location information according to the present embodiment is configured to provide a predetermined IP to the WiFi terminal 60 by receiving a predetermined IP request from the WiFi terminal 60 through the predetermined AP 50. Server 10, a WATS server 20 that interworks with a DHCP server, a DB server 30 that provides predetermined data to the WATS server 20, and an LBS server 40 that interworks with a WATS server. .

Specifically, as shown in FIG. 2, the DHCP server 10 receives the IP rental request signal from the WiFi terminal, the MAC address of the WiFi terminal, and the DHCP data receiver 11 receiving the IP address of the AP through the AP 50. ), A DHCP data transmitter 12 providing a predetermined IP to the WiFi terminal 60, and providing a MAC address of the WiFi terminal 60 and an IP address of the AP 50 to the WATS server 20, and WiFi. According to the IP rental request of the terminal 60, the DHCP IP forming unit 13 which forms a predetermined IP address that can be rented, and whether or not to continuously rent the IP loaned to the specific WiFi terminal 60, how long does the rental time be? Or a rental IP management unit 14 for managing the leased IP and the like, and a control unit 15 for controlling the functions of the components of the DHCP server 10.

In addition, as shown in FIG. 3, the WATS server 20 provides a MAC address of the WiFi terminal 60 and an IP address of the AP 50 from the DHCP server 10. The WiFi terminal information corresponding to the MAC address of the WiFi terminal 60 and the location information of the AP corresponding to the IP address of the AP 50 are interlocked with the receiving WATS data receiver 21 and the DB server 30. Functions of the components of the WATS positioning unit 23, the WATS data transmitter 22 for providing the terminal information of the WiFi terminal 60 and the position information of the AP 50 to the outside. It includes a control unit 24 for controlling. At this time, the WiFi terminal information is not limited to the type of the user information, such as the phone number, user address of the WiFi terminal, preferred restaurant / shopping mall information of the WiFi terminal user.

Next, as shown in Figure 4, the DB server 30 is the information of the WiFi terminal, such as the user information, such as the phone number, user address of the WiFi terminal for storing the subscriber information of the WiFi terminal, the preferred restaurant / mall information of the WiFi terminal user and WiFi terminal information DB 31 for storing various information related to the user of the WiFi terminal and location information of the AP 50 installed in a specific area, building information of the place where the AP 50 is installed, if the installed place is indoors, the AP If the place where 50 is installed is a business place, it is composed of an AP location information DB 32 that stores various information related to the location of the AP 50 such as business place information.

Next, as shown in Figure 5 LBS server 40 is an LBS data receiving unit for receiving the location information of the AP 50 and the information of the specific WiFi terminal 60 extracted from the DB server 30 from the WATS server 20 (41), a service forming unit (43) for checking at least one service content corresponding to the IP address of the AP through a predetermined database (44), and an LBS data transmitting unit for providing the confirmed service to the WiFi terminal ( 42) and a controller 45 for controlling the functions of the components of the LBS server 40.

In this case, the service is, for example, when the specific WiFi terminal 60 is confirmed to enter the specific store through the location information of the AP 50, the LBS server 40 discounts the specific store to the WiFi terminal 60 Like a coupon, the user of the WiFi terminal may transmit information / data immediately available at the store. Alternatively, the service may be, for example, when the WiFi terminal 60 enters a specific place through the location information of the AP 50, the data may be transmitted to the third terminal. Then, the third terminal user can use the information for the purpose of customer management, child and student management using the information. In this case, the service provided to the WiFi terminal and the third terminal may be transmission of push type information including a predetermined text message or a multimedia message.

Next, a detailed procedure of the method for providing location information of a WiFi terminal according to a preferred embodiment of the present invention will be described in detail below with reference to FIGS. 6 and 7. For reference, components that perform the same functions as described above use the same reference numerals and will not be described in detail.

First, FIG. 6 is a diagram illustrating a method in which the DHCP server 10 according to the present embodiment rents an IP to the WiFi terminal 60 and obtains a MAC address of the WiFi terminal 60 and an IP address of the AP 50. to be.

As shown in FIG. 6, when the WiFi terminal 60 enters a zone capable of transmitting and receiving signals with a specific AP as a DHCP client, that is, a WiFi zone, the WiFi terminal 60 receives a signal indicating that WiFi is available from the AP 50. Request an IP rental.

Subsequently, when the AP 50 receives the IP rental request from the WiFi terminal 60, the AP 50 checks the MAC address of the WiFi terminal 60 and then the MAC address of the WiFi terminal 60 and the IP of the AP 50. While providing the address to the DHCP server 10, it requests the WiFi terminal 60 to rent an IP. Then, the DHCP server 10 proposes to the WiFi terminal 60 via the AP 50 whether to use the selected IP after forming a predetermined IP, and the WiFi terminal 60 selects the selected IP to allow the WiFi. IP rental procedure of the terminal 60 is completed. Meanwhile, when a WiFi terminal enters a specific WiFi zone, an IP rental request to a specific AP may be initiated by a user running a predetermined program such as an Internet connection through the WiFi terminal. When the AP 50 is searched and the AP 50 is found, an IP rental request method, that is, an automated method may be adopted.

In addition, the WiFi terminal 60 and the DHCP server 10 confirms whether or not to continue the IP rental regularly even after the IP rental is made. Checking whether the IP is rented can be made freely, such as a few seconds in the place where the terminal is frequently entered and exited, and can be adjusted in a few days. do.

Next, FIG. 7 schematically illustrates a procedure after the DHCP server 10 obtains the MAC address of the WiFi terminal 60 and the IP address of the AP 50 according to the present invention.

As shown in FIG. 7, the WATS server 20 receives the MAC address of the WiFi terminal 60 and the IP address of the AP 50 from the DHCP server 10, and then works with the DB server 30. The WiFi terminal information corresponding to the MAC address of 60) and the location information of the AP corresponding to the IP address of the AP 50 are checked. To this end, the WiFi terminal information DB 31 may include user information such as a phone number corresponding to the MAC address of the WiFi terminal, user information such as user address / name, and preference information for the user if there is a store / hobby that the user prefers. Store various information about the user. In addition, the AP location information DB 32 is the location information of the AP 50 which records the location where the AP 50 is installed, in particular, the building information of the location where the AP 50 is installed, in particular, the corresponding AP when the installed location is indoors. If the place where 50 is installed is a business place, it stores various information related to the location of the AP 50 such as business place information.

Next, the LBS server 40 receives the information of the specific WiFi terminal 60 and the location information of the AP 50 extracted from the DB server 30 from the WATS server 20, and then through the database 44 Confirm at least one service content corresponding to the IP address of the AP, and provide the confirmed service to the WiFi terminal. For example, when the specific WiFi terminal 60 enters the specific store through the location information of the AP 50, the LBS server 40 sends the WiFi terminal 60 to the WiFi terminal 60 as a discount coupon of the specific store. The user of the WiFi terminal may be transmitting information / data immediately available at the store. Alternatively, the service may be, for example, when the WiFi terminal 60 enters a specific place through the location information of the AP 50, the data may be transmitted to the third terminal. Then, the third terminal user can use the information for the purpose of customer management, child and student management using the information. In this case, the service provided to the WiFi terminal and the third terminal may be transmission of push type information including a predetermined text message or a multimedia message.

In addition, in addition to the case where the specific terminal 60 enters the specific WiFi zone, the service may be provided even when the specific terminal 60 leaves the specific WiFi zone. That is, as described above, the WiFi terminal 60 and the DHCP server 10 periodically check whether or not to continue the IP rental, this confirmation is made automatically by the rental IP management unit (14). Therefore, when the DHCP server 10 does not provide a signal for continuing the IP lease from the WiFi terminal 60, the DHCP server 10 may determine that the WiFi terminal 60 is out of the corresponding WiFi zone, and the information is provided to the WATS server 20. It may be provided to the LBS server 40 through. Then, the LBS server 40 transmits a specific message or a coupon to a WiFi terminal that is considered to be out of a specific WiFi zone, or provides the administrator of the zone with the time that the WiFi terminal 60 stayed in a specific zone for customer management. Can be used as data.

The system and method for providing location information according to the preferred embodiment of the present invention have been described in detail above. However, one of ordinary skill in the art will appreciate that various modifications and variations of the configuration are possible. Accordingly, the scope of the present invention is limited only by the claims which will be described later.

10: DHCP server 20: WATS server
30: DB server 40: LBS server
50: access point 60: WiFi terminal

Claims (12)

DB for providing a predetermined IP to the WiFi terminal, a DHCP server providing a predetermined IP to the WiFi terminal, a WATS server interworking with the DHCP server, and providing the predetermined data to the WATS server through a predetermined AP. A location information providing system of a WiFi terminal including a server,
The DHCP server provides a DHCP data receiving unit for receiving an IP rental request signal from the WiFi terminal, a MAC address of the WiFi terminal, and an IP address of the AP through the AP, and a predetermined IP for the WiFi terminal. The WATS server includes a DHCP data transmitter for providing the MAC address of the WiFi terminal and the IP address of the AP, and a DHCP IP forming unit for forming a predetermined IP address that can be rented according to the IP rental request.
The WATS server includes a WATS data receiving unit receiving the MAC address of the WiFi terminal and the IP address of the AP from the DHCP server, and the WiFi terminal information corresponding to the MAC address and the IP address of the AP in conjunction with the DB server. WATS location check unit for confirming the location information of the corresponding AP, WATS data transmission unit for providing the WiFi terminal information and the location information of the AP to the outside
Location information providing system using a WiFi terminal, characterized in that. The system of claim 1, wherein the data provided by the WATS data transmitter is provided to an LBS server. The method of claim 2, wherein the LBS server comprises: an LBS data receiver configured to receive the WiFi terminal information and the location information of the AP from the WATS server; and at least one service content corresponding to the IP address of the AP through a predetermined DB. And a service confirming unit for confirming and an LBS data transmitting unit for providing the checked service to an external terminal. The location information providing system using a WiFi terminal according to claim 3, wherein the external terminal is the WiFi terminal. DB for providing a predetermined IP to the WiFi terminal, a DHCP server providing a predetermined IP to the WiFi terminal, a WATS server interworking with the DHCP server, and providing the predetermined data to the WATS server through a predetermined AP. A location information providing method of a WiFi terminal driven by a system including a server,
The DHCP server is:
Receive a request to rent a certain IP to a specific WiFi terminal from a predetermined AP, receives the Mac address of the WiFi terminal and the IP address of the AP from the AP,
The DHCP server forms a predetermined IP address that can be rented according to the IP rental request,
Providing a MAC address of the WiFi terminal and an IP address of the AP to the WATS server;
The WATS server is:
Receiving the MAC address of the WiFi terminal and the IP address of the AP from the DHCP server,
Check the WiFi terminal information corresponding to the MAC address and the location information of the AP corresponding to the IP address of the AP in association with the DB server;
A second step of providing the WiFi terminal information and the location information of the AP to the outside
Location information providing method using a WiFi terminal, characterized in that it comprises a. 6. The method of claim 5,
The WiFi terminal information of the second step and the location information of the AP is provided to the LBS server,
When the LBS server receives the WiFi terminal information and the location information of the AP from the WATS server, the LBS server checks at least one service content corresponding to the IP address of the AP through a predetermined DB, and externally checks the identified service. Method for providing location information using a WiFi terminal, characterized in that it comprises a third step of providing to the terminal. The method according to claim 5 or 6, wherein following the first step, the DHCP server receives a re-rent request of the rented IP from the WiFi terminal at predetermined time intervals, and in response to the re-rent request, Location information providing method using a WiFi terminal, characterized in that it further comprises the step of renting an IP. 8. The method of claim 7, wherein the DHCP server further comprises the step of terminating the rental of the IP if the DHCP server does not receive the re-lease request within a predetermined time. The method according to claim 5 or 6, wherein the DHCP server provides the WATS server with the MAC address of the WiFi terminal terminated the IP rental and the IP address of the AP communicating with the WiFi terminal, the WATS server is the LBS server At least one of WiFi terminal information corresponding to the MAC address of the WiFi terminal and AP information corresponding to the IP address of the AP communicating with the WiFi terminal, wherein the LBS server corresponds to the termination of the IP rental from the WATS server. If the service content is confirmed, the location information providing method using the WiFi terminal, characterized in that further comprising providing the identified service to the WiFi terminal. The method of claim 5 or 6, wherein the service provided to the WiFi terminal is a predetermined mobile or Internet coupon. The method of claim 10, wherein the external terminal is the WiFi terminal. The method of claim 10, wherein the external terminal is a portable terminal or a predetermined server device of another user.
KR1020100057073A 2010-06-16 2010-06-16 System and method for producing location information using wifi terminal KR20110137068A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013180362A1 (en) * 2012-06-01 2013-12-05 한국과학기술원 Device and method for making wi-fi radio map
WO2014109467A1 (en) * 2013-01-08 2014-07-17 주식회사 케이티 Method for providing information through wireless lan and apparatus therefor
KR101449595B1 (en) * 2013-05-20 2014-10-13 서울메트로 Subway passenger safety management system and method thereof using subway indoor location based service

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013180362A1 (en) * 2012-06-01 2013-12-05 한국과학기술원 Device and method for making wi-fi radio map
US9445387B2 (en) 2012-06-01 2016-09-13 Korea Advanced Institute Of Science And Technology Method and apparatus for building Wi-Fi radio map
WO2014109467A1 (en) * 2013-01-08 2014-07-17 주식회사 케이티 Method for providing information through wireless lan and apparatus therefor
KR101453523B1 (en) * 2013-01-08 2014-10-27 주식회사 케이티 Method and apparatus for providing information based on wireless local area network
US9491733B2 (en) 2013-01-08 2016-11-08 Kt Corporation Method for providing information through wireless LAN and apparatus therefor
KR101449595B1 (en) * 2013-05-20 2014-10-13 서울메트로 Subway passenger safety management system and method thereof using subway indoor location based service

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