KR100932785B1 - System providing integrated subscriber recognition in heterogeneous networks and mobile IP registration method for same - Google Patents

Abstract

The present invention relates to a system and method for providing integrated subscriber recognition in a heterogeneous network.

According to the present invention, an integrated home agent and an integrated authentication server are installed in a heterogeneous network composed of wireless networks using different types of network access identifiers. The integrated home agent generates binding information generated based on the network connection identifiers of all the wireless networks to which the subscriber station requesting the mobile IP registration is subscribed, wherein the binding information matches the home address of the subscriber station after moving to the network connection. Mobile IP registration is performed using-managed by identifiers. The integrated authentication server provides the integrated home agent with respective network access identifiers of all the wireless networks to which the subscriber terminal is subscribed through the integrated home agent and the subscriber authentication procedure.

As such, since a single integrated HA can be implemented to accommodate various NAIs, efficient subscriber recognition is possible even if a single subscriber is recognized in each network differently.

Description

System for providing unified user identification in heterogeneous network and method of mobile IP registration

The present invention relates to a system for providing integrated subscriber recognition in a heterogeneous network and a method for registering a mobile IP for the same. More specifically, the present invention provides a network of different types, for example, wireless LAN, HDSPA (High Speed Downlink Packet Access), CDM (Code Division Multiple Access), WCDMA (WCDMA) Subscriber Recognition System for Authentication, Charging, and Handover between Wireless Connections in Heterogeneous Networks Composed of Network, Wideband Code Division Multiple Access (WiBro), WiBro (Wireless Broadband Internet), Wi-Fi (WiFi) Mobile IP registration method.

The development of the existing Internet is dominated by wire-based infrastructure. In recent years, however, wireless infrastructures such as wireless LAN, HDSDMA, CDM, WCDMA, WiBro, and Wifi have been spotlighted.

In order to guarantee mobility throughout wired and wireless, a method using mobile IP is mainly used, and roaming between heterogeneous networks is widely used.

1 is a diagram of a conventional heterogeneous network, and FIG. 2 is a format of binding information.

As shown in FIG. 1, a heterogeneous network is composed of a first wireless network 4, a second wireless network 5, and a third wireless network 6 having different radio access methods. The first subnet 1, the second subnet 2, and the third subnet 3 each belong to a first wireless network 4, a second wireless network 5, and a third wireless network 6. It means an area. Here, the first subnet 1 and the first wireless network 4 belong to a serving network including the subscriber station 100. The second subnet 2, the second wireless network 5, the third subnet 3 and the third wireless network 6 belong to a target network hierarchically connected to the serving network.

As the elements constituting each network, first, the first wireless network 4 is a network having a WiBro wireless access standard, and includes a subscriber station 100 and a RAS (Radio Access Station) 110 located in the first subnet 1. And an access control router (ACR) 120 and an AAA (Authentication, Authorization and Accounting) 130 located in the first wireless network 4. In addition, the second wireless network 5 is a wireless LAN network, and includes a wireless access point (AP) 210, a router 220, and an AAA 230 located in the second subnet 2. In addition, the third wireless network 6 is a network having WPC radio access standards, and includes a base station 310, a Serving GPRS Support Node (SGSN) 320, and a GGSN (Gateway) located in the third subnet (3). GPRS Support Node) 330 and AAA 340.

At this time, the AAA (130, 230, 340) is located in each of the first wireless network 4, the second wireless network 5 or the third wireless network 6 performs the subscriber authentication process for the subscriber station 100 do.

The home agent (HA) is located in the public network, that is, the Internet network 7, and stores the location information of the subscriber station 100 and the IP address information currently being used. The HA registers and manages binding information consisting of a home IP address of the subscriber station 100 and an IP address after moving.

The first wireless network 4, the second wireless network 5, and the third wireless network 6 are independently connected to the HA for interworking. Whenever the subscriber station 100 moves or requests a new service in the interworking structure, the subscriber station 100 performs mobile IP registration with the HA. In general, the subscriber station 100 transmits subscriber identification information, that is, network access identifier (NAI), when registering the mobile IP, so that the subscriber is recognized and used for billing and authentication processing.

However, conventionally, the subscriber recognition method used for authentication and billing is different for each network. That is, the type of NAI (Network Access Identifier) used for subscriber recognition is different for each network. For example, in the CDM network and WPC network, subscribers are recognized using IMSI (International Mobile Station Identity). In a WLAN network, a subscriber is identified using an ID. In the WiBro network, the subscriber is identified using the Media Access Control (MAC) address.

As such, the way in which one subscriber is recognized in each network is different, but there is no way to accommodate this at a time.

As shown in FIG. 2, since the conventional HA can accommodate only one type of NAI, there is HA per NAI. The mobile IP binding information 400 managed by the conventional HA basically includes a NAI 420, a terminal IP address 440, and a care-of address (COA) 460.

Here, FIG. 2 (a) shows the mobile IP binding information 400 stored in the HA that accepts 'NAI=IMSI@ktf.com'.

In addition, Figure 2 (b) shows the mobile IP binding information 400 stored in the HA that accepts 'NAI = MAC@kt.com'.

That is, the HA managing the mobile binding information of FIG. 2A and the HA managing the mobile binding information of FIG. 2B are different from each other.

To use the mobile IP binding information, as shown in FIG. 1, the first HA 150 managing the NAI used in the first wireless network 4 and the first managing the NAI used in the second wireless network 4 are used. 2 HA 250, it should be implemented as a third HA 360 to manage the NAI used in the third wireless network (6).

Therefore, there is a problem that the network configuration is complicated because HA and AAA to accommodate the NAI used in each network must be installed respectively. In addition, each time a new wireless network or technology is added, there is a problem in that HA and AAA must be added to accommodate NAI used in a new network for subscriber authentication processing and billing for access to a new network. These problems are a major factor in reducing the efficiency of the network. In addition, integrated charging on PMIP (Proxy Mobile IP) and MIP (Mobile IP) is difficult.

In addition, the recent trend of using mobile IP technology to provide seamless communication through interworking between heterogeneous networks. However, if the conventional method for recognizing subscribers between heterogeneous networks is not carried out, charging and subscriber authentication cannot be performed smoothly.

An object of the present invention is to provide a system for providing integrated subscriber recognition in a heterogeneous network in which networks using different types of NAI (Network Access Identifier), and a mobile IP registration method therefor.

In order to achieve the problems described above, the integrated subscriber recognition system according to the characteristics of the present invention,

In a system for recognizing a subscriber station in a heterogeneous network composed of wireless networks using different types of network access identifiers, the subscriber station requesting mobile IP registration is generated based on the respective network connection identifiers of all the wireless networks to which the subscriber station is requested. An integrated home agent configured to perform mobile IP registration of the subscriber station by using the binding information, wherein the binding information is matched with the home address of the subscriber station and the post-move address and managed according to the network access identifiers; And an integrated authentication server for providing the network access identifiers to the integrated home agent through a subscriber authentication procedure for a network access identifier of a wireless network to which the integrated home agent and the subscriber terminal are connected.

In addition, the mobile IP registration providing method according to another feature of the present invention,

A method for providing mobile IP registration in a heterogeneous network composed of wireless networks using different types of network connection identifiers, the method comprising: (a) an integrated home agent receiving a mobile IP registration request from a subscriber terminal; And (b) binding information generated based on respective network access identifiers of all the wireless networks to which the subscriber station is subscribed, wherein the binding information is matched with a home address of the subscriber station after moving and managed for each network access identifier. Performing the mobile IP registration of the subscriber station.

According to the present invention, since one integrated HA can be implemented to accommodate various NAIs, efficient subscriber recognition is possible even if the method of one subscriber is recognized in each network is different. In this way, operators can utilize the billing and authentication process for various wired / wireless complex services and integrate and manage subscribers.

In addition, the method can be used not only for mobile IP but also for proxy mobile IP (Proxy Mobile IP) recently gained attention.

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. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, the terms "… unit", "... module" described in the specification means a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software.

Now, with reference to the drawings will be described in detail with respect to the system for providing subscriber recognition in a heterogeneous network according to an embodiment of the present invention and a mobile IP registration method therefor. In this case, the same reference numerals are used for the same components as in the related art, and redundant descriptions are omitted.

3 is a heterogeneous network configuration according to an embodiment of the present invention.

As shown in FIG. 3, a heterogeneous network includes a first wireless network 4, a second wireless network 5, and a third wireless network 6 using different types of Network Access Identifiers (NAIs), respectively. ). In this case, the wireless network has been exemplified by three kinds of wireless networks, but it is obvious that a plurality of wireless networks may be added.

In this case, the subscriber station 100 is a multi-mode terminal, not a terminal operating only in a specific network, but having a first wireless network 4 and a second wireless network 5 having different types of wireless access standards. It means a terminal that can be operated in all of the third wireless network (6).

The subscriber station 100 is wirelessly connected to the first wireless network 4, the second wireless network 5, and the third wireless network 6 to receive a mobile IP (IP) service, thereby providing other wireless It is possible to move to the network.

The subscriber station 100 transmits a mobile IP registration request message to the integrated home agent (HA) whenever the network in which the location is changed is notified of its current location. At this time, the address that represents its location is called CoA (Care of Address). In addition, the subscriber station 100 includes the NAI having the form of the network connected to the mobile IP registration request message. For example, the NAI may be formed in an 'IMSI @ domain' in a mobile communication network and in a 'MAC @ wired carrier domain' in a wired network. The NAI has a different form for each network, that is, the first wireless network 4, the second wireless network 5, and the third wireless network 6. At this time, when a new wireless network is added to the NAI, an NAI having a format suitable for the new wireless network is added.

The Internet network 7 is equipped with an integrated subscriber recognition system that provides integrated subscriber recognition. Such an integrated subscriber recognition system is a specific subscriber when there is a need of an integrated home agent (hereinafter referred to as 'HA') 500 and an integrated HA 500 that can accommodate NAIs of all networks regardless of format. It includes an integrated authentication server (Authentication, Authorization and Accounting, hereinafter referred to as 'AAA') 600 that provides all of the NAI information.

The integrated HA 500 is a router belonging to the same subnet as the home address of the subscriber station. The integrated HA 500 stores binding information of the CoA indicating the current location of the subscriber station 100 and the home address of the subscriber station 100. The integrated HA 500 manages the binding information of the subscriber terminal 100 and thus performs a mobile IP service function. That is, it plays a role of tunneling a packet destined for the subscriber station 100 to the CoA of the subscriber station 100.

The integrated HA 500 receives the mobile IP registration request message from the subscriber terminal 100 whenever the network in which the subscriber terminal 100 is located changes and continuously updates and manages binding information, and performs subscriber authentication and registration processing. To perform.

In this case, the integrated HA 500 obtains the NAI of the network to which the subscriber terminal 100 accesses upon receiving the mobile IP registration request message from the subscriber terminal 100. If the NAI is not included in the binding information, the subscriber terminal 100 receives the NAIs of all the networks subscribed to the service while performing the subscriber authentication process for the NAI in the integrated AAA 600. The integrated HA 500 manages NAIs of all the received networks as binding information of the subscriber station 100. This is different from the conventional configuration in which one HA 500 could manage only binding information containing one type of NAI.

In addition, if the integrated HA 500 includes the NAI received from the subscriber station 100 in the binding information, the mobile IP registration is performed immediately without performing a separate subscriber authentication procedure with the integrated AAA 600. This is because the NAI is included in the binding information means information that has already undergone subscriber authentication from the integrated AAA 600. Therefore, when the subscriber station 100 performs the handover, it is possible to save as much time as not performing the subscriber authentication procedure, thereby reducing the handover delay time.

The integrated AAA 600 performs a subscriber authentication function, a service authority verification function, and a charging function between the subscriber station 100 and the wireless network to which the subscriber station 100 requests access. The integrated AAA 600 controls these functions by NAI.

The integrated AAA 600 registers and manages NAIs of all the networks subscribed to by the subscriber station 100 in a database. The integrated AAA 600 reads all NAIs mapped and stored with the NAI transmitted by the subscriber station 100 when performing the authentication procedure with the integrated HA 500 initially accessed by the subscriber station 100 and integrated HA. Provide 500. That is, it can be seen that the subscriber terminal 100 performs not only the NAI of the network requesting the connection but also the subscriber authentication of the NAI of all the networks to which the subscriber terminal 100 subscribes at a time to provide them in advance. As described above, the NAIs provided in advance are used for future handover.

Then, a detailed configuration of the integrated HA 500 and the integrated AAA 600 described above will be described.

4 is a block diagram illustrating an internal configuration of an integrated HA according to an embodiment of the present invention, and FIG. 5 is a format of binding information according to an embodiment of the present invention.

As shown in FIG. 4, the integrated HA 500 includes a binding information DB 520, a binding information manager 540, and a mobile IP register 560.

The binding information DB 520 stores binding information matching the home address of the subscriber station 100 with the address after the movement. Here, the address after the movement refers to a CoA indicating the current position registered in the integrated HA 500 when the subscriber station 100 moves from the home network to the external network. Such binding information is invalidated unless it is updated within a certain life-time.

At this time, the binding information is configured as shown in FIG. That is, the binding information 700 includes a NAI field 720, a terminal IP address field 740, and a CoA field 760.

The NAI field 720 contains information for identifying the subscriber station 100, and NAI is used as identification information. In this case, conventionally, only NAI having a network type to which the subscriber station 100 is connected is recorded, but in the embodiment of the present invention, all NAIs of the network to which the subscriber station 100 is subscribed are recorded.

In addition, the NAI field 720 is subdivided into an access field 722 and an unconnected field 724 to distinguish the NAI of the network to which the subscriber station 100 accesses.

The access field 722 contains NAI (eg, IMSI@ktf.com) of a network to which the subscriber station 100 accesses. When the subscriber station 100 performs handover, the NAI of the previous access network is stored.

The unconnected field 724 includes the remaining NAIs (e.g.,...) Except for the NAI (e.g.,) contained in the access field 722 among the NAIs received by the subscriber station 100 from the integrated AAA 600 upon initial access. It is recorded.

The terminal IP address field 740 contains the home address of the subscriber station 100.

The CoA field 760 contains CoAs provided from a network to which the subscriber station 100 currently accesses. At this time, CoA is obtained from the mobile IP registration request message received from the subscriber terminal (100).

The binding information manager 540 generates, updates, deletes, and retrieves binding information stored in the binding information DB 520.

The binding information manager 540 checks the binding information DB 520 based on the NAI included in the mobile IP registration request message received from the subscriber terminal 100 and checks whether the NAI is registered. When searching, the access field 722 is first searched based on the NAI, and then the unconnected field 724 is searched.

In addition, the binding information manager 540 updates existing binding information with new binding information when the NAI is included in the unconnected field 724. That is, the NAI is moved to the connection field 722 and the existing CoA is changed to a new CoA obtained through the mobile IP registration request message.

In addition, the binding information manager 540 generates binding information based on the NAIs received from the integrated AAA 600 at the initial access of the subscriber station 100. That is, the NAI of the currently connected network is recorded in the connection field 722 and the remaining NAIs are stored in the unconnected field 724. The CoA and the home address of the subscriber station 100 obtained through the mobile IP registration request message received from the subscriber station 100 are recorded in the fields 740 and 760, respectively.

In addition, the binding information manager 540 deletes the binding information that is not updated at a certain life cycle.

The mobile IP registration unit 560 is a routing node of the first wireless network 4, the second wireless network 5, or the third wireless network 6 to which the subscriber terminal 100 is connected, that is, the router 220 and the ACR ( 120), in conjunction with the GGSN 330 and the integrated AAA (600) performs a mobile IP registration and subscriber authentication.

The mobile IP registration unit 560 exchanges a mobile IP registration request message and a mobile IP registration response message for the mobile IP service with the subscriber station 100 through the router 220, the ACR 120, or the GGSN 330.

At this time, the mobile IP registration unit 560 interoperates with the binding information manager 540 to determine whether the subscriber terminal 100 is initially connected or handed over based on whether the NAI is included in the mobile IP registration request message. In other words, if NAI is not registered at all, it is determined that the initial connection. In addition, if the NAI is stored in the connection field 722 or the unconnected field 724, it is determined that the handover is performed.

Here, the mobile IP registration unit 560 omits the subscriber authentication procedure with the integrated AAA 600 except for the initial connection. The reason is that the NAI is included in the binding information 700 itself, which means that the initial authentication has already performed the subscriber authentication procedure.

The mobile IP registration unit 560 exchanges an access request message and an access response message for the subscriber authentication procedure with the integrated AAA 600.

In this case, when the subscriber station 100 is initially connected, the mobile IP registration unit 560 includes information indicating the initial connection in the access request message. In the access request message, an initial access field including information indicating whether the subscriber station 100 is initially connected is newly defined. In the initial access field, when the subscriber station 100 is initially connected, an 'on' value indicating this is recorded.

The mobile IP registration unit 560 transmits a connection request message to the integrated AAA 600 and then receives a connection response message. The access response message includes subscriber authentication information for each NAI and NAIs of all the subscribed networks together with the NAI of the network to which the subscriber station 100 is connected. Here, the subscriber authentication information includes information indicating whether the subscriber authentication procedure is successful. If subscriber authentication information is included in the subscriber authentication information, the mobile IP registration unit 560 does not allocate the mobile IP because the subscriber terminal 100 does not have the authority to access the wireless network. Then, the subscriber station 100 cannot access the corresponding wireless network.

The mobile IP registration unit 560 completes generation of the binding information through the binding information manager 540 when the subscriber authentication information includes the success information of the subscriber authentication procedure. Thereafter, the mobile IP registration response message is transmitted to the subscriber station 100.

As described above, since the integrated HA 500 accommodates NAIs of all networks regardless of the format, the integrated HA 500 includes only one type of NAI in binding information, and thus is different from the conventional configuration in which HA is provided for each NAI.

6 is a block diagram illustrating an internal configuration of an integrated AAA according to an embodiment of the present invention.

As shown in FIG. 6, the integrated AAA 600 includes a subscriber database 620 and a control unit 640.

The subscriber database 620 stores information including NAI for each subscriber. At this time, all the NAIs each having the form of all the networks to which one subscriber is subscribed are stored and they are stored in association with each other. In addition, the subscriber terminal 100 stores history information on which wireless network has recently been connected.

The subscriber database 620 is interworked with a network operator's customer center or a wireless information system environment (WISE) that manages subscriber's service subscription information. The subscriber database 620 is updated each time a subscriber subscribes to a new service product. That is, when a new network join is made, the NAI of the corresponding network is added. In addition, when a new wireless network is added, NAI of subscribers subscribed to the new wireless network is also added.

The controller 640 performs a NAI storage function and a management function of the subscriber database 620.

The controller 640 works with the integrated HA 500 to perform a subscriber authentication procedure, billing, and the like for the subscriber station 100. The controller 640 exchanges an access request message and an access response message for the subscriber authentication procedure with the integrated HA 500.

When the access request message is received from the integrated HA 500, the controller 640 checks the initial access field to determine whether the subscriber station 100 is initially connected. When initially connected, the subscriber database 620 is searched using the NAI contained in the connection request message as a key.

The controller 640 determines whether the NAI contained in the access request message is registered in the subscriber database 620 and whether the NAI is suitable for the corresponding wireless network to permit subscriber authentication. The NAI included in the access request message and all NAIs stored in association with the NAI are read, included in the access response message, and transmitted to the integrated HA 500.

If the NAI contained in the access request message is not stored in the subscriber database 620 or is not suitable for the wireless network, the controller 640 disallows subscriber authentication. The subscriber authentication failure information is included in the access response message and transmitted to the integrated HA 500.

Now, the mobile IP registration process for integrated subscriber recognition based on this configuration will be described.

7 is a flowchart illustrating a mobile IP registration process according to an embodiment of the present invention. At this time, the mobile IP registration process at the time of initial access of the subscriber station 100 located in the first wireless network 4 of FIG. 3 will be described as an embodiment. Here, the first wireless network 4 is a WiBro network.

As shown in FIG. 7, the subscriber station 100 performs a wireless network access process and authentication process (S101) with the RAS. The subscriber station 100 requests a home address through an ACR and an IP address assignment process and performs a QoS process (S103). After the wireless network access procedure through the above steps, the subscriber station 100 performs the mobile IP registration procedure according to the change of the subnet.

The subscriber station 100 transmits an agent request message (Agent Solitication Request) message to the ACR to request an agent advertisement (S105) and receives an Agent Advertisement message (S107).

The subscriber station 100 transmits a mobile IP registration request message including 'NAI=MAC@kt.com' provided from the WiBro network to the ACR (S109). ACR delivers the received mobile IP registration request message to the integrated HA (S111).

The integrated HA requests subscriber authentication by transmitting an access request message (Access Request) including the NAI received in step S111 to the integrated AAA (S113). At this time, the initial access field is 'On' and transmitted. In this case, the NAI (MAC@kt.com) received in step S111 is not included in the binding information of the integrated HA.

The integrated AAA stores all NAIs (, ..., ...) of the subscriber station retrieved based on the NAI (MAC@kt.com) received in step S113 in an access response message and transmits them to the integrated HA (S115).

The integrated HA completes generating binding information based on all NAIs (,, ...) received in step S115, and then transmits a mobile IP registration response message to the ACR (S117). The ACR transmits the received mobile IP registration response message to the subscriber station (S119).

8 is a flowchart illustrating an interworking process between an integrated HA and an integrated AAA for integrated subscriber recognition according to an embodiment of the present invention. That is, the flowchart of FIG. 7 shows the steps S111 to S117 in detail.

As shown in FIG. 8, the integrated AAA receives the NAIs of all the networks to which the subscriber is subscribed and configures the subscriber database (S201).

When the integrated HA receives the mobile IP registration request message from the subscriber station (S203), it searches for the binding information DB (S205).

The integrated HA determines whether the NAI included in the mobile IP registration request message received in step S203 is included in the binding information DB (S207).

When the integrated HA is determined to be the case in which the NAI is recorded in step S207, it is determined as handover (S209). At this time, the integrated HA updates the binding information based on the mobile IP registration request message received in step S203 (S211).

If it is determined that the NAI is not recorded in step S207, the integrated HA is determined as the initial access (S213). In addition, an NAI requesting authentication and an access request message for an authentication request in which an 'on' value is inserted in an initial access field are generated (S215) and transmitted to the integrated AAA (S217).

The integrated AAA searches the subscriber database based on the NAI received in step S217 (S219). At this time, it is determined whether authentication is successful according to whether the received NAI is stored in the subscriber database (S221).

If it is determined that the authentication failed in step S221, and generates an access response message containing the authentication failure information (S223).

If it is determined that the authentication is successful in step S221, it reads all the NAI stored in association with the NAI received in step S217 (S225). In addition to the authentication success information (authentication = OK), and generates a connection response message containing all the NAI read in step (S225) (S227).

The integrated AAA sends the access response message generated in step S227 to the integrated HA (S229). Then, the integrated HA generates and stores binding information based on all NAI received in step S229 (S231).

On the other hand, the integrated AAA transmits the connection response message containing the authentication failure information (authentication = Reject) generated in step S223 to the integrated HA (S233).

After all the above processes, the integrated HA generates a mobile IP registration response message and transmits it to the subscriber station (S233). In this case, the mobile IP registration response message includes registration success information after step S221 or step S231, and registration failure information after step S233.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a conventional heterogeneous network configuration diagram.

2 is a format of binding information in the related art.

3 is a heterogeneous network configuration according to an embodiment of the present invention.

4 is a block diagram illustrating an internal configuration of an integrated HA according to an embodiment of the present invention.

5 is a format of binding information according to an embodiment of the present invention.

6 is a block diagram illustrating an internal configuration of an integrated AAA according to an embodiment of the present invention.

7 is a flowchart illustrating a mobile IP registration process according to an embodiment of the present invention.

8 is a flowchart illustrating an interworking process between an integrated HA and an integrated AAA for integrated subscriber recognition according to an embodiment of the present invention.

Claims (10)

A system for recognizing a subscriber station in a heterogeneous network composed of wireless networks using different types of network access identifiers, Binding information generated based on the network connection identifiers of all the wireless networks to which the subscriber station requesting mobile IP registration is subscribed, wherein the binding information matches the home address of the subscriber station after the move and matches each network connection identifier. An integrated home agent performing mobile IP registration of the subscriber station using Managed-; And An integrated authentication server for providing the network access identifiers to the integrated home agent through a subscriber authentication procedure for a network access identifier of a wireless network to which the integrated home agent and the subscriber station are connected. Integrated subscriber recognition providing system comprising a. The method of claim 1, The integrated home agent, A binding information management unit for determining whether a network connection identifier of a wireless network to which the subscriber station is connected is included in the previously stored binding information; And When the network connection identifier is connected to the binding information management unit and the network connection identifier is included in the binding information, mobile IP registration is performed using the previously stored binding information, and if not, the network connection identifiers are obtained through an authentication procedure. Based on this, the mobile IP register that generates new binding information and performs mobile IP registration Integrated subscriber recognition providing system comprising a. The method of claim 2, The binding information management unit, A binding including a network access identifier field containing information for identifying the subscriber station, a terminal IP address field containing a home address of the subscriber station, and an auxiliary address field containing a secondary address indicating a current location of the subscriber station; Configure the information DB, The network access identifier field may include a connection field for storing a network access identifier of a network to which the subscriber terminal accesses, and network access identifiers of a wireless network subscribed to by the subscriber terminal received from the integrated authentication server to which the subscriber terminal is not connected. Integrated subscriber identity providing system comprising a non-access field recorded. The method of claim 1, The integrated authentication server, A subscriber database for storing a plurality of network connection identifiers having different formats for each subscriber as subscriber information; And Control unit for adding network access identifiers of subscribers joining the new wireless network to the subscriber database when a new wireless network is added Integrated subscriber recognition providing system comprising a. A method for providing mobile IP registration in a heterogeneous network composed of wireless networks using different types of network access identifiers, (a) the integrated home agent receiving a mobile IP registration request from a subscriber terminal; And (b) binding information generated based on respective network access identifiers of all the wireless networks to which the subscriber station is subscribed, wherein binding information is matched to the home address of the subscriber station and then moved to manage the network access identifiers Performing mobile IP registration of the subscriber station using- Mobile IP registration providing method comprising a. The method of claim 5, In step (b), (b1) determining whether a network connection identifier of a wireless network to which the subscriber station received in step (a) is stored in the previously stored binding information; (b2) if it is recorded, performing mobile IP registration using the pre-stored binding information; And (b3) performing mobile IP registration by generating new binding information based on the network access identifiers obtained through the subscriber authentication procedure for the network access identifier performed with the integrated authentication server, if not included; Mobile IP registration providing method comprising a. The method of claim 6, Step (b3), (Iii) sending an access request message for subscriber authentication on the network access identifier to the integrated authentication server; (Ii) receiving, from the integrated authentication server, an access response message including respective network connection identifiers of all the wireless networks subscribed to the subscriber station stored in association with the network connection identifier; And (Iii) generating the binding information based on the network connection identifiers received in step (ii). Mobile IP registration providing method comprising a. The method of claim 7, wherein In the step (iii), Mobile IP registration providing method characterized in that the integrated authentication server transmits the access request message containing the information indicating the initial access of the subscriber terminal in the newly defined initial access field to recognize the initial access of the subscriber station. . The method according to any one of claims 6 to 8, Step (b1), Retrieving a connection field of the binding information that contains a network connection identifier of a network to which the subscriber station has accessed; Retrieving a connectionless field of the binding information in which the subscriber station contains network connection identifiers of a wireless network to which the subscriber station which is not connected has not been searched in the connection field; And Determining not to be included in both the connection field and the unconnected field as an initial access, and determining the handover when included in the connection field or the unconnected field. The method (b2) is performed if it is determined that the initial access, and the method for providing mobile IP registration, characterized in that the step (b3) is performed if it is determined that the handover. The method of claim 9, Step (b3), If it is determined that the handover, the new assistance received in step (a) by moving the network access identifier to the access field and the existing auxiliary address, where the auxiliary address is address information indicating the current location of the subscriber station. Mobile IP registration providing method characterized in that by changing the address to update the existing binding information with the new binding information.

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