KR20030063502A - Wireless LAN System for prcessing Internet service roaming of mobile device and method thereof - Google Patents

Abstract

PURPOSE: A wireless LAN system processing an Internet service roaming process of a mobile communication terminal is provided to transmit terminal authentication information to other ISP server if the terminal authentication information is not authenticated, and to transmit a received authentication result to a wireless access device, thereby enabling the wireless access device to supply a wireless Internet service. CONSTITUTION: If terminal identification information received from a mobile communication terminal is not authenticated, a wireless access device(150) further receives terminal authentication information from the terminal, and transmits the terminal authentication information to an ISP server(140). The ISP server(140) performs authentication through the terminal authentication information. If the authentication information is not authenticated, the ISP server(140) transmits the information to other ISP server to authenticate the information, and receives an authentication result from the other ISP server. The ISP server(140) transmits the result to the wireless access device(150).

Description

Wireless LAN system for processing roaming service of mobile communication terminal and method thereof {Wireless LAN System for prcessing Internet service roaming of mobile device and method}

The present invention relates to a wireless LAN system and method for processing roaming of Internet services of a mobile communication terminal, and more particularly, to a wireless LAN service area managed by different Internet Service Provider (ISP) and AP (Access Point) devices. When the mobile communication terminal that is connected to the wireless LAN is moved, the Internet service roaming processing is performed so that the wireless LAN service can be maintained and provided by a simple authentication process without disconnecting the service and performing a separate complicated service registration process. It relates to a wireless LAN system and a method thereof.

Wireless LAN, which has been introduced in Korea since 1994, is a technology that extends LAN in an environment where existing wired network is difficult to install by using wireless transmission technology, and transmits and receives data through 2.4 GHz waves instead of 10Mbps or 100Mbps based wired cable. Use

Wireless LANs have raised considerable expectations for their use due to various advantages. First of all, departments and mobile companies require a lot of relocation costs and consumables when using existing wired networks. Except in the case of network expansion, there is an efficiency that does not require additional costs. Therefore, in a work environment requiring maintenance, relocation, mobility, etc., or where a relatively large sales organization is required (e.g., insurance companies, car sales offices, etc.), even if a wired network environment is established, it is not sufficient to supplement dynamic business activities. Is the best solution available to distributors, local sales offices, logistics companies, manufacturers, schools and warehouses.

In addition, due to aesthetics and environmental factors, wired networks often have to be bypassed by a few hundred meters, far exceeding tens of meters in a straight line. In accordance with the government's policy on the installation of optical cables, there are cases where a private line is applied separately and a plurality of networks are integrated and used. In this case, using the WLAN, it is possible to reduce the cabling cost.

The WLAN is a device for WLAN, a service registration method, and a method used according to the number of mobile communication terminals to be connected, the size of an area requiring a service, the type of service provided for each ISP, and the involvement of a WLAN service provider. If you look at the configuration and services of the basic WLAN as follows.

First, an ISP equipped with a backbone network directly installs an AP device and provides a WLAN service by renting a registered PC card or a mobile communication terminal to a user who applied for WLAN service. Since the mobile terminal has information, the service user does not need to perform a separate procedure for roaming between service areas of the AP device. For example, an institution having a backbone network provides a wireless LAN service to a person related to an institution so that a business can be processed regardless of movement within a certain region.

Second, ISPs equipped with backbone networks and AP devices provide wireless LAN services for the general public using their respective mobile communication terminals. Access to the site to apply for a wireless LAN service, and receive a communication program and identification information for using the wireless LAN to use the service.

Third, when the wireless LAN service provider provides the wireless LAN service by installing an AP device and connecting the ISP and the service user, the service user applies for the service to the wireless LAN service provider and uses his own unregistered mobile communication terminal. In other words, the use of the WLAN service is fragmented and more complicated communication is achieved between the mobile communication terminal, the AP device, the WLAN service provider, and the ISP.

Fourthly, ISP implements inter-regional network configuration as wireless LAN equipment, and provides wireless LAN service to wireless service providers (for example, PC rooms) and individual users in a wider area than those mentioned above. There is a case to provide.

As described above, despite various applications, wireless LANs are generally used in special fields such as logistics companies and hospitals due to low data transmission rate (the wireless LAN transmission rate was limited to 2Mbps). Its use was not activated. However, as the data transmission speed of the wireless LAN has been improved to 11Mbps in recent years and the acquisition of equipment has been facilitated, its use is expected to be extended not only to general companies but also to the general public. In addition, each research institute including the Ministry of Information and Communication is actively developing and researching wireless LAN that can service in the 5GHz band which is at least 2 times (22Mbps) to 5 times (54Mbps).

However, as described above, the service user adapts to a more demanding WLAN environment than the wired network environment due to the WLAN service that is differentiated according to various environments such as the type of the WLAN protocol, the use of the fixed IP and the floating IP, and the charging method. This inconvenience in use has been reluctant to the general public who lacks knowledge of the network and the mobile communication terminal.

For example, if ISPs in different service areas register wireless LAN service subscribers independently and implement the service, the service areas may be formed in the same area or in different areas, and use the wireless Internet on the go regardless of such regional differences. Service users must perform additional procedures as they cross the territory.

In other words, the service user has to apply for service to each ISP, receive each program necessary for the use of the wireless LAN, install it in the mobile communication terminal, and perform the cumbersome procedure of recognizing and authenticating the device by accessing each ISP in the local menstruation period. It must be done.

Therefore, in view of the characteristics of the wireless Internet, which is used for the purpose of quickly obtaining information and is used for a short time by random and instantaneous needs, the above-mentioned limitation greatly reduces the use effect of the wireless Internet.

Therefore, when menstruating a wireless LAN area managed by different ISPs, the Internet service roaming process can be maintained so that the service can be maintained and provided by a simple authentication process without disconnecting the service and performing a separate complicated service registration process. There is a need for a wireless LAN service plan.

The present invention has been made to meet the above requirements, the wireless access device receives the terminal identification information from the mobile communication terminal to determine whether to register, if the mobile communication terminal is not registered to the terminal identification information to the ISP server Request for determination of registration by sending, and ISP server requests terminal authentication information including ISP information, user ID and password from wireless access device if mobile communication terminal is not authenticated as terminal identification information, and wireless access device moves Receives the terminal authentication information from the communication terminal and transmits it to the ISP server. The ISP server interworks with other ISP servers to authenticate the mobile communication terminal as the terminal authentication information and transmits the authentication result to the wireless access device. By providing a system and method for providing wireless LAN services And that to extend over a wireless LAN service area for that purpose.

FIG. 1 is a block diagram exemplarily illustrating a form in which a plurality of wireless access devices and an ISP server constituting a wireless LAN system for processing roaming Internet services of a mobile communication terminal according to the present invention are interconnected.

2 is a block diagram schematically showing an internal configuration of an ISP server and a connection form with a wireless access device according to the present invention.

FIG. 3 schematically illustrates a data field structure of a user database of the ISP server shown in FIG. 2.

4 is a flowchart illustrating a method of processing roaming of an Internet service of a mobile communication terminal in a WLAN according to a first embodiment of the present invention.

FIG. 5 is a data flow diagram illustrating an operation of each component and a data flow according to a method of processing Internet service roaming of a mobile communication terminal on a WLAN according to a first embodiment of the present invention.

6A to 6B are flowcharts illustrating a method of processing Internet service roaming of a mobile communication terminal on a wireless LAN according to a second embodiment of the present invention.

FIG. 7 is a data flow diagram illustrating an operation of each component and a data flow thereof according to a method of processing Internet service roaming of a mobile communication terminal in a wireless LAN according to a second embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

100: wireless LAN system for processing roaming service of the mobile communication terminal

110: first ISP server 111: user register

112: first interface unit 113: authentication processing unit

114: authentication request unit 115: second interface unit

116: Internet service provider 117: user database

120: first wireless connection device 1130: first wireless connection device 2

140: second ISP server 150: second wireless access device

In order to achieve the above object, the wireless access device of the wireless LAN system for processing roaming Internet service of the mobile communication terminal according to the present invention, if the terminal identification information received from the mobile communication terminal is not authenticated ISP information, user ID and password Receives the terminal authentication information including a further from the mobile communication terminal and transmits to the ISP server, the ISP server corresponds to the ISP information, if the terminal authentication information is not authenticated and transmits the terminal authentication information to another ISP server connected by wire, The ISP server authenticates the transmitted terminal authentication information and provides the authentication result to the ISP server. The ISP server transmits the received authentication result to the wireless access device so that the wireless access device provides wireless Internet service according to the authentication result. It is done.

In order to achieve the above object, the method for processing roaming service of the mobile communication terminal on a wireless LAN according to the present invention includes (a) determining whether or not registration is performed by receiving a terminal identification information from the mobile communication terminal. step; (b) if the terminal identification information is not authenticated, requesting and receiving terminal authentication information including ISP information, a user ID and a password, and transmitting the received terminal authentication information to an ISP server; (c) The ISP server requests the authentication by sending the terminal authentication information to another ISP server corresponding to the ISP information if the mobile terminal is not authenticated as the terminal authentication information, and the other ISP server authenticates the terminal authentication information to the ISP. Transmitting to a server; (d) the ISP server transmitting the authentication result to the wireless access device; And (e) providing the wireless LAN service according to the authentication result.

Hereinafter, with reference to the accompanying drawings will be described in detail a wireless LAN system for processing the Internet service roaming of a mobile communication terminal according to the present invention.

1 is connected to a plurality of wireless access devices 120, 130, 150 and ISP server 110, 140 constituting a wireless LAN system 100 for processing roaming Internet service of a mobile communication terminal according to the present invention It is a block diagram showing the form by way of example.

1, ISP servers 110 and 140 that provide Internet services may be configured in plural, and each ISP server is connected to one or more wireless access devices 120, 130, and 150 installed in various regions by wire. Provides a wireless LAN service to a mobile communication terminal located in a service area managed by a wireless access device.

Currently, the Internet Service Provider (ISP) consists of seven non-profit ISPs and 47 commercial for-profit ISPs such as the Central Education Research Center and Seoul National Computer Center, Seoul National University. It can be divided into ISP which has its own backbone network such as electric power corporation and ISP which leases backbone network and provides only Internet access service.

The wireless access devices 120, 130, and 150 refer to wireless LAN equipment, and typically include an access point (AP). AP is a wireless LAN device that can configure a network of several Mbps to several tens of Mbps using ISM (Indutrial, Scientific and Medical) band of 2.4GHz frequency band without license, and is a mobile communication terminal equipped with a wireless LAN card. Connect to and provide internet service.

Such an AP may interwork or partially perform a bridge device, a router, a Dynamic Host Configuration Protocol (DHCP) server, a network address translation (NAT) router, a password / security device, a billing system, and the like, depending on the function. Products are being produced. The AP follows the high-speed 802.11 standard of DSSS (Direct Sequence Spread Spectrum) method because the existing AP supporting 2Mbps speed and the latest AP supporting 11Mbps speed coexist and easily move to the high speed 11Mbps environment. This is because there is mutual compatibility between the various products.

The mobile communication terminal is a personal terminal capable of being provided with an existing Internet service through a wired network with mobility, and may include a notebook, a web pad, a hand held PC (HPC), a personal digital assistant (PDA), a desktop, and the like. For example, a desktop mounts an industry standard architecture (ISA) adapter and a LAN PC card in a Peripheral Component Interconnect (PCI) slot. In the case of a notebook, a PC card is mounted in a Personal Computer Memory Card International Association (PCMCIA) slot.

The wireless LAN system 100 that processes roaming of Internet services of a mobile communication terminal according to the present invention includes a plurality of wireless access devices (120, 130, 150) and ISP described above for roaming of Internet services as a mobile communication terminal moves. It provides a simple and efficient authentication function between the servers (110, 140).

This is briefly described as follows. The 1-1 wireless connection apparatus 120 of the wireless LAN system (hereinafter referred to as "the wireless LAN system according to the present invention") 100 for processing roaming service of the mobile communication terminal according to the present invention is a mobile communication Receives and authenticates terminal identification information from the terminal (assuming that the mobile communication terminal receives the WLAN service in the C area and moves to the B area). In this case, if the terminal identification information is authenticated, the wireless LAN service is provided, but if the terminal identification information is not authenticated, the 1-1 wireless access device 120 transmits the terminal authentication information including ISP information, user ID and password to the mobile communication terminal. Received by request and transmits it to the first ISP server (110).

Subsequently, when the received terminal authentication information is authenticated, the first ISP server 110 transmits the authentication result to the 1-1 wireless connection device 120 to provide a wireless LAN service to the mobile communication terminal. If not authenticated, the first ISP server 110 identifies the second ISP server (ISP server is connected to the mutual network) 140 corresponding to the ISP information and transmits the terminal authentication information to the second ISP server 140. The second ISP server 140 authenticates the transmitted terminal authentication information and provides an authentication result to the first ISP server 110, and the first ISP server 110 transmits the received authentication result to the 1-1 wireless connection device 120. By transmitting to a wireless Internet service according to the authentication result.

2 is a block diagram schematically showing an internal configuration of an ISP server and a connection form with a wireless access device according to the present invention.

ISP server constituting the wireless LAN system 100 according to the present invention and a wireless connection device connected to each ISP server to provide a wireless LAN service is preferably implemented in a plurality, but for convenience of description the wireless according to the present invention The components of the LAN system 100 include the first ISP server 110 and the 1-1 wireless connection device 120, the 1-2 wireless connection device 130, and the second ISP server 140 and the second wireless connection device. The description is limited to 150.

In addition, the internal configuration of the ISP server included in the WLAN system 100 according to a preferred embodiment of the present invention will be described with an example of the first ISP server 110.

2, the first ISP server 110 of the wireless LAN system 100 according to the present invention includes a first interface unit 112, a second interface unit 115, an authentication processing unit 113, and an authentication requesting unit 114. ), A user registration unit 111, a program providing unit 118, a user database 117 and an Internet service providing unit 115, the first interface unit 112 is connected to a wireless access device and The two interface unit 115 is connected to a second interface unit of the second ISP server 140 (internal configuration of the second ISP server 140 is not shown).

FIG. 3 schematically shows the data field structure of the user database 117 of the ISP server shown in FIG.

The user registration unit 111 receives terminal user information, terminal identification information, and terminal authentication information from a mobile communication terminal user connected through a wired Internet, and stores them in the user database 117 to register as a WLAN service target. Here, the terminal user information includes the name, address, social security number, contact information of the user of the mobile communication terminal, and the terminal identification information means a device identification number (Mac address).

The terminal authentication information includes ISP information, a user ID, and a password. The ISP information is identification information of an ISP server to which a user of a mobile communication terminal has applied for a wireless LAN service. Therefore, the ISP information is not inputted by the mobile communication terminal user at the time of initial service registration, but the mobile communication terminal user stores the ISP information together with the user ID and password for service authentication later and transmits the information to the communication program on the mobile communication terminal. It must be entered and transmitted to the radio access device.

In addition, the user registration unit 111 transmits the terminal identification information to the plurality of wireless access devices through the first interface 112, and the wireless access devices store the terminal identification information.

When the mobile communication terminal that can use the Internet service through the wireless LAN communication and supports the wireless communication function tries to access the wireless LAN in the frequency range of the wireless access device, the wireless access device wirelessly receives and registers IP packet data from the mobile communication terminal. Determine whether or not. That is, the IP packet data transmitted by the mobile communication terminal includes terminal identification information, and the wireless access device authenticates the mobile communication terminal through the terminal identification information. However, if the mobile communication terminal is not authenticated as the terminal identification information (when the terminal information is not recorded in the memory of the wireless access device), the wireless access device receives the terminal authentication information from the mobile communication terminal wirelessly and receives the first interface unit 112. ), And receives the authentication result of the mobile communication terminal from the first interface 112 to determine the provision of the Internet service through the wireless LAN. A plurality of wireless access devices are installed in predetermined areas and assigned to each wireless LAN service area.

The first interface unit 112 is connected to a wireless access device through a wired network to perform internet data communication. The first interface unit 112 receives terminal identification information and terminal authentication information from a mobile communication terminal through the wireless access device, and authenticates the authentication processing unit 113. The authentication request function is carried out by passing through.

In addition, if the mobile communication terminal that enters its management area fails to authenticate, the authentication processing unit 113 of the ISP server requests authentication to another ISP server through the authentication request unit 114 and the second interface unit 115. (At this time, the terminal authentication information is transmitted.) The second interface 115 receives the authentication result from the other ISP server. That is, the first interface unit 112 receives the authentication result from the authentication processing unit 113 or, if the authentication processing unit 113 does not authenticate, receives the authentication result from the second interface unit 115 and wirelessly receives the authentication result. To send.

The authentication processing unit 113 receives terminal identification information or terminal authentication information from the wireless access device through the first interface unit 112 or receives terminal authentication information from another ISP server through the second interface unit 115 and performs mobile communication. Verify whether the terminal registers with the Internet service. The authentication processor 113 generates authentication information and transmits the authentication result to the first interface 112 and the second interface 115.

That is, if the terminal identification information (that is, identification information of the mobile communication terminal moved to the area of the wireless access device managed by the ISP server itself) received from the first interface unit 112 is not authenticated, the authentication processing unit 113 Command to transmit the authentication information of the mobile communication terminal to the wireless access device through the first interface 112.

The wireless access device requests to transmit authentication information to the mobile communication terminal, and the user transmits terminal authentication information to the wireless access device by inputting authentication information including ISP information, user ID and password into a communication program on the mobile communication terminal. . The wireless access device transmits terminal authentication information to the first interface unit 112, and the first interface unit 112 transmits the terminal authentication information to the authentication processing unit 113. The authentication processor 113 authenticates the user of the mobile communication terminal through the user ID and the password and transmits the authentication result to the wireless access device as described above to provide the wireless LAN service to the mobile communication terminal. If it is determined that the terminal authentication information is not authenticated, the authentication processing unit 113 transmits the terminal authentication information to the authentication requesting unit 114 to inform the fact of the non-authentication of the mobile communication terminal.

In addition, when another ISP server transmits the terminal authentication information of another mobile communication terminal to request authentication through the second interface unit 115, the authentication processing unit 113 uses the user database 117 to identify identification information of the other mobile communication terminal. In the search and authentication, and generates an authentication result delivered to the second interface (115). The second interface unit 115 transmits the authentication result to the second interface unit of another ISP server.

The authentication requesting unit 114 recognizes the ISP server corresponding to the ISP information among the terminal authentication information, and transmits the terminal recognition information including the user ID and password to the second interface unit of the ISP server to request the mobile terminal authentication. .

The second interface unit 115 is connected to the second interface unit of another ISP server (for example, preferably connected via a wired network such as a dedicated line), and transmits terminal authentication information from the authentication request unit 114. Receive it and send it to the second interface part of another ISP server. At this time, the second interface unit of the other ISP server receives it, performs authentication through its authentication processing unit 113, and transmits the authentication result to the second interface unit 115 of the ISP server requesting authentication. In this case, the second interface unit 115 requesting authentication transmits the final authentication result to the first interface unit 112, and the first interface unit 112 transmits the result to the wireless access device.

When the terminal identification information and the terminal authentication information are transmitted and received between the first interface 112, the wireless access device, and the second interface 115 of different ISP servers, the information is preferably encrypted and transmitted. For example, the first interface unit 112 may encrypt and transmit data transmitted / received with the WLAN card of the mobile communication terminal through a WEP (Wired Equipment Privacy) function.

The program providing unit 118 downloads and provides a communication program to a mobile communication terminal registered as a wireless LAN service user through the user's road unit (in addition, the communication program may be provided through a separate storage medium such as a CD or a diskette, for example). The communication program is a program that receives identification information from a user of a mobile communication terminal connected to a wireless access device and wirelessly transmits the identification information to the wireless access device.

The internet service provider 115 provides an internet service to an authenticated mobile communication terminal through a wireless access device.

Hereinafter, a method for processing Internet service roaming of a mobile communication terminal on a wireless LAN according to the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment of a method for processing roaming service of a wireless LAN according to the present invention)

4 is a flowchart illustrating a method of processing roaming of an Internet service of a mobile communication terminal in a WLAN according to a first embodiment of the present invention.

FIG. 5 is a data flow diagram illustrating an operation of each component and a data flow according to a method of processing Internet service roaming of a mobile communication terminal on a WLAN according to a first embodiment of the present invention.

Referring to FIG. 4 and FIG. 5, the connection configuration of the apparatus will be referred to FIG. 1 in the method of processing the WLAN service roaming according to the first embodiment of the present invention.

A method of processing roaming service of a WLAN according to a first embodiment of the present invention assumes the following situation. That is, the 1-2 wireless access device 130 managing area A stores mobile communication terminal information, and the 1-1 wireless access device 120 managing area B does not have mobile communication terminal information. No (for newly installed wireless access devices it is difficult to have information on all mobile communication terminals). In addition, the mobile communication terminal is a terminal having a dynamic IP using DHCP using the Internet service through the WLAN in the area A and moving to the area B.

First, the first ISP server 110 receives terminal user information, terminal identification information, and terminal authentication information, registers a mobile communication terminal as a wireless LAN service target, and provides a communication program to the mobile communication terminal (S400).

The first-first wireless access device 120 receives the terminal identification information as the mobile communication terminal moves to enter the B area (S500), and determines whether to register (S402, S502). At this time, the mobile communication terminal transmits IP packet data at regular intervals, and the IP packet data includes terminal identification information and IP address information. If the mobile communication terminal is not registered, the 1-1 wireless connection device 120 transmits the terminal identification information to the first ISP server 110 and requests the determination of registration (S404, S504). However, unlike the home, if the terminal has identification information, the 1-1 wireless access device 120 provides a wireless LAN service to the mobile communication terminal (S406).

The first ISP server 110, which has been requested to authenticate the mobile communication terminal, authenticates the terminal identification information by comparing the data with the user database 117 (S408, S506). When the terminal identification information is authenticated, the authentication result is 1-1. Transmitting to the wireless access device 120 (S410) and the 1-1 wireless connection device 120 provides a wireless LAN service to the mobile communication terminal (S406). As described above, authentication is primarily performed through terminal identification information, and if authentication is not performed, the user can input terminal authentication information secondly to reduce the authentication process, thereby minimizing inconvenience in using the WLAN. It becomes possible.

However, if the mobile communication terminal is not authenticated as the terminal identification information, the first ISP server 110 instructs to transmit the terminal authentication information including the ISP information, the user ID and the password to the 1-1 wireless connection device 120 ( S508), the 1-1 wireless connection device 120 requests to transmit the terminal authentication information to the mobile communication terminal (S412, S510). The mobile terminal user wirelessly transmits the terminal authentication information to the 1-1 wireless connection apparatus 120 through the communication program (S414, S512).

The first-first wireless access device 120 transmits the transmitted terminal authentication information to the first ISP server 110 (S416, S514), and the first ISP server 110 checks the user ID and password, thereby allowing the user of the mobile communication terminal. Authenticate (S516). The first ISP server 110 transmits the authentication result to the 1-1 wireless connection device 120 (S418, S518), the 1-1 wireless connection device 120 provides or provides a wireless LAN service according to the authentication result. The stop is determined (S422, S406, S520).

In the above-described process, since the first-first wireless access device 120 does not have the registration information of the mobile communication terminal, it requests the authentication to the first ISP server 110 and simultaneously performs the wireless LAN Internet service of the mobile communication terminal. And may be programmed to resume the interrupted WLAN Internet service after the mobile terminal has been authenticated.

On the other hand, since the first-first wireless access device 120 does not have the registration information of the mobile communication terminal, it requests the authentication to the first ISP server 110 and maintains the wireless LAN Internet service of the mobile communication terminal. For example, if the mobile communication terminal is not authenticated, it may be programmed to stop the existing WLAN Internet service.

(Second embodiment of the method for processing roaming service of the WLAN according to the present invention)

6A and 6B are flowcharts illustrating a method of processing Internet service roaming of a mobile communication terminal on a wireless LAN according to a second embodiment of the present invention.

FIG. 7 is a data flow diagram illustrating an operation of each component and a data flow thereof according to a method of processing Internet service roaming of a mobile communication terminal in a wireless LAN according to a second embodiment of the present invention.

Referring to Figures 6a, 6b and 7 in the description of the method for processing WLAN service roaming according to the second embodiment of the present invention will be referred to Figure 1 for the connection configuration of the device.

In the WLAN processing roaming method according to the second embodiment of the present invention, the following situation is assumed. That is, the second wireless access device 150 managing the C area stores the mobile communication terminal information, and the 1-1 wireless access device 120 managing the B area does not have the mobile communication terminal information. In addition, the mobile communication terminal is a terminal having a dynamic IP using DHCP using the Internet service through the WLAN in the area C and moving to the area B.

In describing the method for processing WLAN service roaming according to the second embodiment of the present invention, the same procedure as in the first embodiment of the present invention will be omitted.

First, the 1-1 wireless connection device 120 receives the terminal identification information as the mobile communication terminal moves to enter the area B (S700) and determines whether to register (S600, S702). If the first-first wireless access device 120 does not store the mobile communication terminal information, it transmits the terminal identification information to the first ISP server 110 (S704) and requests the determination of registration (S602). However, unlike the home, if the terminal has identification information, the first wireless access device provides a wireless LAN service to the wireless LAN service to the mobile communication terminal (S604).

The first ISP server 110, which has been requested to authenticate the mobile communication terminal, authenticates the terminal identification information by comparing the data with the user database 117 (S606 and S706). When the terminal identification information is authenticated, the authentication result is 1-1. Transmitting to the wireless access device 120 (S608) and the 1-1 wireless connection device 120 provides a wireless LAN service to the mobile communication terminal (S604).

However, if the mobile communication terminal is not authenticated as the terminal identification information, the first ISP server 110 instructs to transmit the terminal authentication information including the ISP information, the user ID and the password to the 1-1 wireless connection device 120 ( S708), the 1-1 wireless connection device 120 requests to transmit the terminal authentication information to the mobile communication terminal (S610, S710). The mobile communication terminal user wirelessly transmits the terminal authentication information to the 1-1 wireless connection apparatus 120 through the communication program (S612, S712).

The first-first wireless access device 120 transmits the transmitted terminal authentication information to the first ISP server 110 (S614, S714), and the first ISP server 110 checks the user ID and password, thereby allowing the user of the mobile communication terminal. Authenticate The first ISP server 110 transmits the authentication result to the 1-1 wireless connection device 120 (S616), the 1-1 wireless connection device 120 provides a wireless LAN service to the mobile communication terminal (S604). ).

However, if the mobile communication terminal cannot be authenticated even with the terminal authentication information, the first ISP server 110 transmits the terminal authentication information to another ISP server corresponding to the ISP information, that is, the second ISP server 140, from among the terminal authentication information. (S716) Request for authentication (S620).

Subsequently, the second ISP server 140 authenticates the mobile communication terminal through the terminal authentication information (S718) and transmits the authentication result to the first ISP server 110 (S622, S720), and the first ISP server 110 authenticates the authentication result. To the 1-1 wireless connection device 120 (S624, S722). The 1-1 wireless connection device 120 determines to provide or suspend the wireless LAN service according to the authentication result (S628, S604, S724).

In the above-described process, the first-first wireless access device 120 may be programmed in a manner of stopping and resuming or maintaining and stopping the WLAN Internet service as described above in the first embodiment of the present invention.

The present invention has been described above with reference to the preferred embodiments, which are merely examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains do not depart from the essential characteristics of the present invention. It will be appreciated that various modifications and applications are not possible that are not illustrated above. For example, each component specifically shown in the embodiment of the present invention can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

According to the present invention, when a mobile communication terminal crosses a wireless LAN service area managed by different ISPs and AP devices, the wireless LAN service is maintained by providing a simple authentication procedure without performing a complicated service registration process. By receiving a wider range of wireless LAN services can be used.

Claims (12)

Provides a wireless local area network to a mobile communication terminal having a wireless LAN card using a frequency of the ISM band region, performs a terminal authentication, a plurality of wireless access devices for transmitting and receiving Internet data and the wireless access device connected by wire In a wireless LAN system consisting of a plurality of ISP servers for managing and providing Internet services, When the terminal identification information received from the mobile communication terminal is not authenticated, the wireless access device further receives terminal authentication information including the ISP information, a user ID and a password from the mobile communication terminal, and transmits the terminal authentication information to the ISP server. The server performs authentication through the terminal authentication information, but if not authenticated, transmits the terminal authentication information to another ISP server corresponding to the ISP information so as to authenticate the terminal, and receives the authentication result from the other ISP server. The wireless LAN system for processing the roaming of the Internet service of the mobile communication terminal, characterized in that for providing a wireless Internet service according to the authentication result by the wireless access device. The method of claim 1, wherein the ISP server When the terminal authentication information is authenticated, the authentication result is provided to the wireless access device, and the wireless access device roams Internet service of the mobile communication terminal, characterized in that to provide a wireless LAN Internet service to the mobile communication terminal according to the authentication result. WLAN system to process. The method of claim 1, wherein the ISP server Receives terminal user information, terminal identification information, and terminal authentication information from the mobile communication terminal user connected through a wired Internet, registers as a wireless LAN service subject, and receives the terminal authentication information from the mobile communication terminal user connected to the wireless access device. Wireless LAN system for processing the Internet service roaming of the mobile communication terminal, characterized in that for receiving the input and download a communication program for wireless transmission to the wireless access device to the mobile communication terminal. The method of claim 1, wherein the user information is Wireless LAN system for processing roaming Internet services of a mobile communication terminal, characterized in that the transmission is encrypted. In the wireless LAN service providing method, (a) receiving, by the wireless access device, terminal identification information from a mobile communication terminal to determine whether to register; (b) the wireless access device requesting and receiving terminal authentication information including ISP information, a user ID and a password if the terminal identification information is not authenticated, and transmitting the received terminal authentication information to an ISP server; (c) the ISP server requests the authentication by transmitting the terminal authentication information to another ISP server corresponding to the ISP information if the mobile communication terminal is not authenticated as the terminal authentication information, and the other ISP server requests the terminal authentication information. Authenticating and transmitting the authentication result to the ISP server; (d) the ISP server transmitting an authentication result to the wireless access device; And (e) The wireless access device is a method for processing roaming Internet service of a mobile communication terminal on a wireless LAN comprising the step of providing a wireless LAN service according to the authentication result. The method of claim 5, wherein steps (a) to (e) And if the mobile communication terminal is authenticated as the terminal identification information, the wireless access device providing a wireless LAN service to the mobile communication terminal. The method of claim 5, wherein step (b) (b1) the wireless access device, if the terminal identification information is not authenticated, transmitting the terminal identification information to the ISP server and requesting determination of registration; (b2) the ISP server, if the terminal identification information is not authenticated, requesting terminal authentication information including ISP information, a user ID, and a password from the wireless access device; And and (b3) the wireless access device receiving the terminal authentication information from the mobile communication terminal and transmitting the terminal authentication information to the ISP server. The method of claim 6, wherein steps (b2) to (e) When the mobile communication terminal is authenticated as the terminal identification information, the ISP server transmits an authentication result to the wireless access device, and the wireless access device provides a wireless LAN service. How to handle Internet service roaming. The method of claim 5, wherein steps (c) to (e) When the mobile communication terminal is authenticated as the terminal authentication information, the ISP server transmits an authentication result to the wireless access device, and the wireless access device provides a wireless LAN service. How to handle Internet service roaming. The method of claim 5, In the step (a), the mobile communication terminal receives an Internet service through another wireless access device and enters a wireless LAN service area of the wireless access device, and the wireless access device processes authentication of the mobile communication terminal. At the same time, the mobile communication terminal stops and waits for the wireless LAN Internet service. In the step (e), when the mobile communication terminal is authenticated, the wireless access device restarts the interrupted WLAN Internet service. The method of claim 5, In the step (a), the mobile communication terminal receives an Internet service through another wireless access device and enters a wireless LAN service area of the wireless access device, and the wireless access device processes authentication of the mobile communication terminal. And at the same time maintaining the wireless LAN Internet service of the mobile communication terminal, In the step (e), when the mobile communication terminal is not authenticated, the wireless access device stops roaming the maintained WLAN Internet service. Way. The method of claim 5, wherein step (e) If the mobile communication terminal is not authenticated, the wireless access device notifies the mobile communication terminal of a non-authentication result and requests to input other terminal authentication information to repeat steps (b) to (e). A method for processing roaming of Internet services of a mobile communication terminal on a WLAN.