KR20070084848A - Method and system using wlan to find location having rfid tag - Google Patents

Abstract

A location confirmation service system of an RFID(Radio Frequency Identification) tag owner by using a WLAN(Wireless Local Area Network) and a method are provided to transmit RFID tag information to an operation server through the WLAN without constructing a separate communication system, thereby saving enormous time and costs for system construction. An RFID tag(10) has tag information. A wireless AP(Access Point)(30) wirelessly receives the tag information of the tag. An Internet access device(31) receives wire/wireless data sent from the wireless AP, and delivers the received data to an Internet network. An RFID recognition device(20) receives the tag information from the wireless AP, and has a serial number for generating tag entrance information by measuring arrival time of the tag information. An operation server(100) receives the tag entrance information from the device to generate an owner's current location information by extracting local information and owner information from a DB, and sends the owner's current location information to a user's terminal through an SMS(Short Message Service) server.

Description

System and method for positioning service of RDF tag holder using WLAN network {METHOD AND SYSTEM USING WLAN TO FIND LOCATION HAVING RFID TAG}

1 is a view showing the overall configuration according to a first embodiment of a position identification service system of an RFID tag holder using a WLAN network of the present invention;

FIG. 2 is a block diagram illustrating an operation server of FIG. 1;

3 is a data flow diagram according to a first embodiment of a positioning service system of an RFID tag holder using a WLAN network of the present invention;

4 is a flowchart illustrating a first embodiment of a method of identifying a location of an RFID tag holder using a WLAN network according to the present invention;

5 is a diagram illustrating a message transmitted to a member's mobile communication terminal in the flowchart according to the first embodiment of FIG. 4;

6 is a flowchart illustrating a data according to a second embodiment of a positioning service system of an RFID tag holder using a WLAN network according to the present invention;

7 is a flowchart illustrating a second embodiment of a method for identifying a location of an RFID tag holder using a WLAN network according to the present invention.

* Description of the main parts of the drawings *

10: RFID tag 20: RFID recognition equipment

30: Wireless AP 31: Internet Access Equipment

32: router 40: mobile communication network

50: mobile communication terminal 100: operation server

The present invention obtains the tag information of the RFID tag using a wireless local area network of WLAN Internet frequency band, and the RFID tag holder using the WLAN network which transmits the current time and location of the acquired tag information to a member's mobile communication terminal as a text message. Relates to a positioning service system and method.

RFID is a technology that integrates the use of electromagnetic or electrostatic coupling within the radio frequency of the electromagnetic spectrum to identify objects, animals or humans, and is increasingly used in the industry as a technology to replace barcodes.

These RFID systems consist of antennas, readers, and tags called transponders. The antenna uses radio wave propagation to transmit a signal for activating the tag. When the tag is activated, the antenna transmits data that the tag has to the antenna.

This process can range from as simple as passing through a door to something as complex as a sales transaction with a database.

In modern society, on the other hand, in a crowded place, it is not easy to find a child accompanied by some careless parental care.

In addition, it is difficult to put children away from home in a critical reality where infant crimes such as kidnapping and kidnapping occur frequently as well as the loss of children.

In addition to these young children, as the society ages, an increasing number of elderly people often become unfamiliar and embarrassed and lost because of blurred judgment.

In addition, pampered pets can easily leave their homes if they are released outside of their homes, often causing their owners to tease.

In order to solve these social problems, various techniques for locating moving objects, animals or humans have been proposed as follows.

For example, "Tracking device and method" of Korean Patent Publication No. 2003-0022107, "Silvertown management system and method using wireless communication" of Korean Patent Publication No. 2003-0043178, and "Korean tracking patent of 2003-0012854" Personal location detection system, and "Method and system for location-based recording of user activity" of Korean Patent Publication No. 2003-0029968.

However, prior art patents of such a location tracking system have to install a base station and a management server separately, so that the information transmitted from the RFID tag arrives at the management server via the base station, and the management server integrates the RFID tag information to determine an appropriate decision. There is a difficulty in accompanying the space and cost required for the installation of the base station.

In addition, when an obstacle is detected on a driving path using an image detection device, an obstacle is detected using a controller inside the position tracking device, so a large amount of image information database must be established for each location tracking device. Resource waste occurs.

An object of the present invention for solving the above problems, by uploading the RFID recognition equipment to the wireless AP, the location service system of the RFID tag holder using a WLAN network that can transmit the RFID tag information to the operation server via the WLAN network And to provide a method.

Another object of the present invention is to provide an RFID tag holder's location service system and method using a WLAN network that transmits RFID tag information reached to an operation server in real time as a message of a member's mobile communication terminal through a mobile communication network. .

As described above, an object of the present invention is to provide a system for searching a location in a space of a floating target using an RFID tag, the RFID tag having tag information that is a unique ID number that cannot be duplicated; A wireless AP which is a wireless relay base station of a WLAN that receives tag information of an RFID tag wirelessly; An Internet connection device connected to the wireless AP and connected to the other side of the Internet network to receive wired / wireless data transmitted from the wireless AP and transmit the received data to the Internet network; An RFID recognition device connected to one side of the Internet access equipment, receiving tag information transmitted from the wireless AP, and having a unique number for generating tag access information by measuring the arrival time of the tag information; Receives the tag access information transmitted from the RFID recognition equipment through the Internet network, extracts the holder information and the local information from the DB to generate the current location information of the user, and the current location information of the user through the SMS server of the mobile communication network It is achieved by a position identification service system of an RFID tag holder using a WLAN network, characterized in that it comprises an operating server for transmitting to a mobile communication terminal.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a view showing the overall configuration according to a first embodiment of a position identification service system of a RFID tag holder using a WLAN network of the present invention, Figure 2 is a block diagram of the operational server of Figure 1 to be.

3 is a diagram illustrating a data flow according to a first embodiment of a system for identifying a RFID tag holder's location using the WLAN network of the present invention, and FIG. 4 is a location of an RFID tag holder using the WLAN network of the present invention. 5 is a flowchart illustrating a confirmation service method, and FIG. 5 is a diagram illustrating a message transmitted to a member's mobile communication terminal in the flowchart according to the first embodiment of FIG. 4.

6 is a diagram illustrating a data flow according to a second embodiment of a system for identifying a RFID tag holder's location using the WLAN network of the present invention, and FIG. 7 is a location of an RFID tag holder using the WLAN network of the present invention. 2 is a flowchart illustrating a confirmation service method according to a second embodiment of the present invention.

As shown in FIG. 1, an overall configuration diagram according to a first embodiment of a system for identifying a location of an RFID tag holder using a WLAN network according to the present invention is an RFID tag 10, an RFID recognition device 20, and a wireless AP 30. Internet connection means 31, the operation server 100, SMS server 50, the mobile communication terminal 50 is composed of.

The holder of the RFID tag 10 mainly targets the elderly, children, dogs, and the like, and the card with the RFID tag individually assigned to the holder is hanged on the neck or stored in a pocket so as not to be separated from the holder. .

The RFID tag 10 is a personal wearable device having an ID number that is tag information (equipment unique number) uniquely assigned so that duplication is impossible, and periodically through short-range wireless communication in a 2.4 GHz or 5 GHz band, which is a wireless LAN frequency band. This is a passive form for transmitting data related to registration of a tag ID and function control data.

The frequency of the RFID tag 10 uses a microwave band of 2.4GHz or 5GHz, has a recognition distance within 50 ~ 100m, and has a high recognition speed.

The wireless AP 30 corresponds to a hub of a wired LAN having a wireless relay base station, that is, an antenna and a wireless signal processing and management function, and a function of interworking a wired network and a wireless network. It is an end device of the internet communication network which is already established for, and can be installed in each zone of the whole area.

The wireless AP 30 follows the communication standard of 802.11b having a frequency range within 50 ~ 100m of 2.4GHz or 5GHz wireless LAN standard.

Therefore, the wireless AP 30 receives the tag information of the RFID tag by directly wirelessly communicating when the RFID tag enters and leaves within a radius of 50 to 100 m (depending on the obstacle state).

The Internet access equipment 31 is connected to the wireless AP 30 on one side, and connected to the RFID recognition equipment 20 on the other side, from wired / wireless data and RFID recognition equipment transmitted from the wireless AP 30. Receives the transmitted tag information and transmits it to the operation server 100 through the Internet.

The RFID recognition device is connected to one side of the Internet access device 31 to be uploaded to the wireless AP network 20, the ID number of the tag information of the RFID tag received from the wireless AP network 20 to the operation server It serves to transmit.

At this time, the RFID recognition device transmits the ID number to the operation server, and at the same time, the arrival time, which is the time when the ID number reaches the RFID recognition device, and transmits the unique number of the RFID recognition device to the operation server.

The arrival time of the ID number corresponds to the time when the RFID tag enters and exits the wireless AP network 20, and the unique number of the RFID recognition device is linked to each wireless RFID network 20. Each device has its own unique number, indicating its region.

The operation server 100 is connected to the Internet network through the Internet access equipment 31.

The operation server 100 stores member information and holder information in a DB in order to register and manage a person who wants to know the location of the tag holder as a member.

The operation server 100 extracts the holder information stored in the DB of the operation server 100 from the ID number transmitted by the RFID recognition equipment, the location of the RFID recognition equipment from the unique number (wireless AP is Extract the installed area).

The holder information and location and time information extracted as described above are transferred to the SMS server of the mobile communication company through the router 32.

The router 32 is a device which allows a plurality of Internet information communication networks to interconnect and exchange data, and transmits the bearer current location information of the operation server 100 to an SMS server of a mobile communication network.

The SMS server of the mobile communication network 40 allows the holder's current location information of the operation server 100 to be transmitted to a member's mobile communication terminal in a message format.

In addition, the mobile communication terminal receives a short message or a multimedia message transmitted by the mobile communication terminal to be confirmed by the member.

2 illustrates a detailed block diagram of the operation server 100 described in FIG. 1.

The operation server 100 is composed of a billing server, authentication server, DB server.

The DB server stores the member information, tag information, location information, etc. in the DB built in the operation server 100, and reads and matches the data whenever necessary for the member information DB, the holder information DB, the holder's current location. It consists of an information DB.

The member information DB has a mobile communication terminal number and stores member information for using the service of the present invention to know the location of the RFID tag holder.

The member information DB stores a member number, member identification information, and a number of a member's mobile communication terminal for transmitting a text message for each member.

The holder information DB is a DB for storing the information of the person who will carry the RFID tag, and stores the holder identification information, ID number, and member number of the member for each holder.

The member number is information for matching member information from the holder's ID number.

In addition, the bearer current location information DB stores the unique number of the plurality of RFID recognition equipment and the corresponding area information for each unique number, and stores the arrival times transmitted by each of these RFID recognition equipment in real time.

In addition, the current location information generated by the arrival time, the local information and the holder information is stored for a period set in the holder location information DB so that it automatically disappears, the past date not confirmed for a predetermined period The holder's current location information can be checked.

The authentication server is a server that authenticates whether the tag information is valid when tag information is transmitted to the operation server 100 as the RFID tag of the tag holder is read by the RFID recognition device.

The valid tag information refers to a state in which a user is paying a bill in order to continuously receive a service.

That is, when the ID number, which is the tag information of the RFID tag, reaches the operation server 100, the authentication server is continuously stored when the holder's ID number (member's supercharge payment is faithfully stored) stored in the DB. Authentication) by searching for a matching ID number).

The billing server is a server linked to the user subscribed as a member to pay the amount according to the use of the service in accordance with the subscription terms, so that the billing in proportion to the number of RFID tag issued by the member.

As the member continues to pay the bill, the ID number of the holder is stored in the DB of the operation server 100, thereby passing the authentication process.

3 is a flowchart illustrating a data according to a first embodiment of an RFID tag holder's location service system using a WLAN network according to the present invention. Components of the data transmission include an RFID tag, an RFID recognition device, an operation server, and a mobile device. It becomes a communication network and a mobile communication terminal.

As the holder of the RFID tag moves, the RFID tag within the radius of the wireless AP 30 is activated to wirelessly transmit the tag information including the ID number to the wireless AP 30.

The tag information transmitted to the wireless AP 30 is transmitted to the RFID recognition device through the Internet access equipment, the unique number of the RFID recognition equipment and the arrival time data that the tag information reached the RFID recognition equipment is combined It is sent to the authentication server of the operation server as tag access information.

The ID number of the tag access information is searched for by the authentication server whether there is a match with the ID number of the holder stored in the DB server.

If there is a matching ID number, the corresponding holder information stored in the DB is extracted from the ID number, and the member information and the mobile communication terminal number of the member are extracted from the holder information.

In addition, the arrival time data is stored in the DB, the local information stored in the DB is extracted from the unique number of the RFID recognition equipment, and converted into the holder's current location information combined with the member information, the arrival time data, and the local information of the holder. do.

The bearer self-location position information is stored in the bearer self-location position information DB by the DB server, and is transmitted to the mobile communication network together with the mobile communication terminal number of the member.

The current location information of the bearer is generated as the current location message of the user through the SMS server of the mobile communication network, and the current location message of the user is transmitted to the corresponding mobile communication terminal number and confirmed by the member.

4 is a flowchart illustrating a first embodiment of a method of identifying a location of an RFID tag holder using a WLAN network according to the present invention.

The user who wants to know the real-time location of the other party goes through the registration step (S10) of registering a member to use the service of the present invention.

The user enters his or her personal information and the number of the mobile communication terminal and pays the billing to start using the service.

In addition, the RFID tag provided by the service provider is provided with the start of service use.

The RFID tag can be given up to a plurality of members according to the member's request, and the billing is paid in proportion to the number of RFID tags.

In addition, in order to receive an RFID tag, the holder's personal information to be described in the RFID tag is notified to the service company so that the holder's information is registered.

The member who has received the RFID tag goes through a tag holding step (S20) to carry the RFID tag to a target who wants to know its location.

The tag holding step (S20) in the case of a child to make an RFID tag as a necklace to hang on the neck, or in the case of pet dogs attached to the clothes of pet dogs so as not to be easily separated from the holder.

The target carrying the tag performs the entry step (S30) to enter the wireless local area network.

In the entry step (S30), the tag holder enters within a certain range of the wireless AP 30, and thus the tag information of the attached RFID tag is transmitted to the operation server by the RFID recognition equipment linked with the wireless AP 30. Is reached.

The ID number of the tag information reaching the operation server performs a user authentication step (S40) to check whether the same ID among the IDs stored in the DB of the DB server is the tag information of the RFID tag registered by the user.

If the same ID number as the ID number of the tag information is not searched by the user authentication step (S40), the tag information is deleted, and the RFID tag is given again through the user registration step (S10).

When the same ID number as the ID number stored in the DB is searched, the member information of the receiver is extracted by the ID number, the local information stored in the DB is extracted from the unique number of the RFID recognition device, and the RFID recognition device Combines the arrival time transmitted from to generate the bearer self-location location information.

The WLAN network of the present invention by performing the message checking step (S50) to send the bearer's current location information generated by the operating server to the mobile communication server's SMS server, the SMS server to transmit the user's current location message to the user's mobile communication terminal. This completes the location verification service process of the RFID tag holder.

In addition, the user's current location message transmitted to the mobile communication terminal by the message checking step (S50) is first entered into the name, region, region of the tag holder through the display unit 51 of the mobile communication terminal as shown in FIG. It will show the user the time information that has come.

FIG. 6 is a diagram illustrating a data flow according to a second embodiment of a system for identifying a location of an RFID tag holder using a WLAN network of the present invention. Components constituting the data flow diagram of the second embodiment are the components of the first embodiment. The details are the same as those of the elements, and a detailed description thereof will be omitted.

However, the operation server is a VM that is a location dedicated program that can easily check the current location information message transmitted to the mobile communication terminal of the user using the service of the present invention and inquire the operation server of the current location information in real time. Virtual machine) to be registered in the download server of the mobile carrier.

The location confirmation VM registered in the download server of the mobile communication company is downloaded by connecting to the download server of the mobile communication company with the user's mobile communication terminal.

In the state where the VM is downloaded, the RFID tag entered within the radius range of the wireless AP 30 is activated by the movement of the holder who carries the RFID tag, and the tag information including the ID number is written to the wireless AP 30. Wireless transmission.

The tag information transmitted to the wireless AP 30 is transmitted to an RFID recognition device through an Internet access device, and the unique number of the RFID recognition device and the arrival time data at which the tag information reaches the RFID recognition device are combined. It is sent to the authentication server of the operation server as tag access information.

The ID number of the tag access information is searched for whether there is a match with the ID number of the holder stored in the DB server by the authentication server. If not, the tag access information is deleted and the ID if the matching ID number exists. Member information, which is the corresponding holder information stored in the DB, is extracted from the number, and the mobile communication terminal number of the member is extracted from the member information of the device.

In addition, the arrival time data is stored in the DB, the local information stored in the DB is extracted from the unique number of the RFID recognition equipment, and converted into the holder's current location information combined with the holder's member information, arrival time data, local information do.

The holder's current location information is stored in the holder's current location information DB by the DB server, and in this state, the holder's current location information request message is transmitted to the mobile communication network through the VM of the mobile communication terminal.

The holder's current location information request message is generated by inputting a specific holder's name or a time zone to be known together with the holder's name through the VM.

The bearer current location information request message transmits an information request message from the mobile communication network to the operation server.

The information request message extracts the location of the holder desired by the member or the location of the holder at a specific time from the holder's current location information stored in the operation server to transmit the user's current location information to the mobile communication network.

The current location information of the bearer reaches the SMS server of the mobile communication network and is converted into the current location message of the user, and the current location message of the user is transmitted to the mobile communication terminal of the member.

7 is a flowchart illustrating a second embodiment of a method for identifying a location of an RFID tag holder using a WLAN network according to the present invention.

The user who wants to know the real-time location of the other party goes through the registration step (S10) of registering a member to use the service of the present invention.

The user enters his or her personal information and the number of the mobile communication terminal and pays the billing to start using the service.

In addition, the RFID tag provided by the service provider is provided with the start of service use.

The RFID tag can be given up to a plurality of members according to the member's request, and the billing is paid in proportion to the number of RFID tags.

In addition, in order to receive an RFID tag, the holder's personal information to be described in the RFID tag is notified to the service company so that the holder's information is registered.

After going through the membership registration step (S10) as described above, the member goes through the VM download step (S20) to download the VM, which is a dedicated location checking program to his mobile communication terminal.

In addition, the member who has been given an RFID tag goes through a tag holding step (S30) to carry the RFID tag to a target who wants to know its future location.

In the tag holding step (S30), a child makes an RFID tag as a necklace and hangs it around his neck, or, in the case of a dog, attaches it to clothes of a pet dog so that it is not easily separated from the holder.

The target carrying the tag performs the entry step (S40) to enter the wireless local area network.

The ID number of the tag information reaching the operation server performs a user authentication step (S50) to check whether the ID is the tag information of the RFID tag registered by the user by searching whether there is the same ID among the ID stored in the DB of the DB server.

If the same ID number as the ID number of the tag information is not retrieved by the user authentication step (S50), the tag information is deleted, and the RFID tag is given again through the user registration step (S10).

When the same ID number as the ID number stored in the DB is searched, the member information of the receiver is extracted by the ID number, the local information stored in the DB is extracted from the unique number of the RFID recognition device, and the RFID recognition device Combining the arrival time transmitted from to generate the location information of the bearer self and save it in the DB.

In this state, the member performs the information request step (S60) through which the request for information for the location of the tag holder and the location of the desired time through the VM of his mobile communication terminal.

Accordingly, the WLAN of the present invention by performing the message confirmation step (S70) that the member confirms the message by transmitting the bearer's current location information stored in the DB to the member's mobile communication terminal through the SMS server of the mobile communication network. This completes the location verification service for RFID tag holders using the network.

As described in detail above, the position identification service system of an RFID tag holder using the WLAN network of the present invention transmits the RFID tag information to the C zero server through the WLAN network distributed throughout the region without establishing a separate communication system. It can save a lot of time and money to build.

In addition, the method of the RFID tag holder positioning service system using the WLAN network of the present invention, since the RFID tag information reached to the operation server in real time as a message of the member's mobile communication terminal through the mobile communication network, the member's mobile communication If you have a terminal, you can know the location and time of tag holders such as children, seniors, and pets anywhere, so you can live with confidence.

In the above description, the technical concept of the RFID tag holder's positioning service system and method using the WLAN network of the present invention has been described with the accompanying drawings. However, the present invention has been described by way of example only. no. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (11)

In the system for searching the position in the space of the floating target using an RFID tag, An RFID tag 10 having tag information that is a unique ID number that cannot be duplicated; A wireless AP 30 which is a wireless relay base station of a WLAN which receives tag information of an RFID tag wirelessly; An Internet connection device 31 connected to the wireless AP 30 and connected to the other side of the Internet network to receive wired / wireless data transmitted from the wireless AP 30 and transmit the received data to the Internet network; It is connected to one side of the Internet access equipment 31, receives the tag information transmitted from the wireless AP 30, RFID recognition having a unique number for generating the tag access information by measuring the arrival time of the tag information Equipment 20; Receive the tag access information transmitted from the RFID recognition equipment 20 through the Internet network to extract the holder information and local information from the DB to generate the current location information of the holder, and the current location information of the holder to the SMS server of the mobile communication network Positioning service system of the RFID tag holder using a WLAN network, characterized in that it comprises an operation server 100 for transmitting to the user's mobile communication terminal through. The method of claim 1, The frequency of the RFID tag (10) is a position identification service system of the RFID tag holder using a WLAN network, characterized in that using the 2.4GHz WLAN band. The method of claim 1, The operation server 100, the member information DB that stores the member-specific mobile communication terminal number and personal information; A holder information DB which stores personal information, ID number, and member number of the RFID tag holder; It further includes a DB server configured to store local information corresponding to the unique number of the plurality of RFID recognition equipment, each of the RFID recognition equipment for the current location information DB for storing the arrival time transmitted in real time; Positioning service system of the RFID tag holder using a wireless local area network, characterized in that the configuration. The method of claim 3, wherein The operation server 100 includes: an authentication server for retrieving whether the tag information is valid by searching for the ID of the holder information DB corresponding to the ID of the tag information when the RFID tag information is transmitted to the operation server 100; And a billing server interlocked so that a user subscribed as a member pays an amount according to service use. The method of claim 1, The operation server 100 is a RFID tag holder using a WLAN network, characterized in that to develop a virtual machine for identifying the location that can inquire the current location information of the holder in real time, and registered in the download server of the mobile communication company Positioning service system. In the method for retrieving the position in the space of the floating target using an RFID tag, A user registration step (S10) in which a user who wants to know a real time location of the other party is given a member subscription and an RFID tag to use a service; A tag holding step (S20) of granting a member who has received the RFID tag to possess the RFID tag to a target who wants to know its location; An entry step (S30) in which a target carrying a tag enters the wireless local area network; A user authentication step (S40) of retrieving from the DB server an ID equal to the ID of tag information reaching the operation server through the RFID recognition device by the entry step (S20); WLAN network, comprising a message checking step (S50) of sending the current location information of the holder generated by the operation server to the mobile communication terminal, the user's current location message from the mobile communication terminal to the user's mobile communication terminal; Location service method of RFID tag holder using The method of claim 6, The RFID tag may be given in plurality according to a member's request, and the billing service method of the RFID tag holder using a WLAN network, characterized in that the billing is paid in proportion to the number of the RFID tag. The method of claim 6, In the user authentication step (S40), if the same ID as the ID of the tag information is not retrieved, the tag information is deleted, returning to the user registration step (S10) of the RFID tag holder using a WLAN network, characterized in that Location service method. In the method for retrieving the position in the space of the floating target using an RFID tag, A user registration step (S10) in which a user who wants to know the real time location of the other party is given an RFID tag together with membership registration; A download step (S20) of downloading a location-only virtual machine to the user's mobile communication terminal; A tag holding step (S30) for carrying an RFID tag to a target to know a member position to which the RFID tag has been given; An entry step (S40) in which a target carrying a tag enters a wireless local area network; A user authentication step (S50) of retrieving from the DB server an ID equal to the ID of the tag information reaching the operation server through the RFID recognition device by the entry step (S40); An information request step (60) in which the user transmits his / her own location information request message via a virtual machine to know the current location of the tag holder with his mobile communication terminal; The WLAN network, characterized in that it comprises a message confirmation step (S70) is transmitted to the user's mobile communication terminal in the form of a message from the mobile communication network to the user to confirm the message, the current location information requested by the operation server RFID tag holder location verification service method. The method of claim 9, The RFID tag may be given in plurality according to a member's request, and the billing service method of the RFID tag holder using a WLAN network, characterized in that the billing is paid in proportion to the number of the RFID tag. The method of claim 9, If the same ID as the ID of the tag information is not retrieved in the user authentication step (S50), the tag information is deleted, and the user returns to the user registration step (S10) of the RFID tag holder using the WLAN network, characterized in that Location service method.

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