KR20110052134A - Method for authenticating multi band multi mode mobile communication terminal in mobile communication network and multi band multi mode mobile communication terminal thererfor - Google Patents

Abstract

PURPOSE: A multimode terminal authentication method in a mobile communication network is provided to integrate duplicated authentication process of a multiband multimode terminal. CONSTITUTION: An AAA(Authentication, Authorization and Accounting) performs network authentication for a UMTS(Universal Mobile Telecommunication System) network certification of a multiband multimode terminal(S205). The AAA performs a Wibro network certification of the multiband multimode terminal(S207). An SGSN(Serving GPRS Support Node) requests the location registration of the multiband multimode terminal to an HLR(Home Location Register)(S213). An ACR(Access Control Router) assigns IP address of the multiband multimode terminal(S219). The multiband multimode terminal establishes the received IP address(S225). The ACR offers Wibro based mobile communication service to the multiband multimode terminal(S227).

Description

FIELD OF THE INVENTION AND METHOD FOR MULTIBAND MULTI MODE MOBILE COMMUNICATION TERMINAL IN MOBILE COMMUNICATION NETWORK AND MULTI BAND MULTI MODE MOBILE COMMUNICATION TERMINAL THERERFOR}

The present invention relates to a technology for authenticating a multiband multimode terminal in a mobile communication network, and more particularly, to a method for authenticating a multiband multimode terminal in a communication system in which heterogeneous communication networks are mixed, and a multiband multimode terminal for the same. will be.

As various communication networks are established today, a multi-band multi-mode terminal supporting a plurality of communication modes in one mobile communication terminal has been developed, and subscribers can use a plurality of mobile communication terminals. It can selectively connect to any one of the mobile communication networks. For example, users access UMTS networks (Universal Mobile Telecommunications System Networks, hereinafter referred to as UMTS networks) and Wibro networks (Wibro networks, hereinafter referred to as Wibro networks). By using a multi-band multi-mode terminal, it is possible to access a Wibro network when using the wireless Internet, and to access a UMTS network when a user wants to talk with another person, thereby providing a mobile communication service.

However, when the multi-band multi-mode terminal performs authentication with the mobile communication system, the multi-band multi-mode terminal proceeds with a dual authentication process. Specifically, when the multi-band multi-mode terminal is connected to the first mobile communication network, the first mobile communication network proceeds with the authentication procedure for the multi-band multi-mode terminal, similarly when the multi-band multi-mode terminal is connected to the second communication network The second mobile communication network performs a separate authentication procedure for the multiband multimode terminal. For example, when a multiband multimode terminal supporting access to a UMTS network and a Wibro network attempts to access the UMTS network, the UMTS network may be configured as an International Mobile Station Identity (IMSI) of a multiband multimode terminal. Independent authentication procedure based on IMSI '), and Wibro network also publicly identifies PUID (Public User Identity, hereinafter called' PUID ') of a multiband multimode terminal attempting to access itself. A separate authentication process is performed based on

However, the method of performing such a dual authentication procedure has a problem of causing a waste of line in the mobile communication network, and also hinders the service providing speed of the multiband multimode terminal.

SUMMARY OF THE INVENTION The present invention has been proposed to solve such a conventional problem, and an object thereof is to provide a method for integrating and authenticating a multiband multimode terminal accessible through a heterogeneous network in a single communication network, and a multiband multimode terminal for the same. .

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to a first aspect of the present invention for achieving the above object, a method for authenticating a multiband multimode terminal in a communication system including a first communication network and a second communication network, the first communication network from the multiband multimode terminal Receiving a location registration request message; Extracting, by the first communication network, subscriber identification information included in the location registration request message; Authenticating, by the first communication network, the access right of the first communication network and the access right of the second communication network of the multiband multimode terminal based on the subscriber identification information; Requesting, by the first communication network, the second communication network to assign an IP address of the multi-band multi-mode terminal which has been successfully authenticated; And transmitting, by the first communication network, the IP address allocated by the second communication network to the multiband multimode terminal.

According to a second aspect of the present invention for achieving the above object, a multiband multimode terminal for selectively connecting to a first communication network and a second communication network comprises: first communication means for communicating with the first communication network; Second communication means for communicating with the second communication network; And an IP address allocated from the first communication network to the second communication network by performing a registration procedure for authentication with the first communication network when connecting to the first communication network through the first communication means. And upon receiving an authentication success message, control means for determining no authentication for the second communication network based on the reception of the IP address when connecting to the second communication network via the second communication means.

The present invention has the advantage of saving the resources of the communication system wasted in the dual authentication process by integrating and simplifying the conventional dual-band multi-mode terminal authentication procedure.

In addition, the present invention has the advantage of providing a faster Wibro service to the subscriber by providing a Wibro service immediately to a multi-band multi-mode terminal without going through a separate authentication procedure.

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a configuration of a system for authenticating a multiband multimode terminal according to an embodiment of the present invention.

As shown in Figure 1, the authentication system according to an embodiment of the present invention is a NodeB (denoted as 'NodeB', node ratio below), RNC (120, Radio Network Controller: Radio Network Controller: 'RNC' ), SGSN (130, Serving GPRS Support Node: packet switching support node, hereinafter referred to as 'SGSN'), AAA (140, Authentication Authorization Accounting: authentication, authorization and billing server, hereinafter referred to as 'AAA') ), HLR (150, Home Location Register, hereinafter referred to as 'HLR'), RAS (210, Radio Access Station: radio access base station, hereinafter referred to as 'RAS'), and ACR (220, Access Control) Router: access control router, hereinafter referred to as 'ACR'. Here, NodeB 110, RNC 120, SGSN 130, AAA 140 and HLR 150 is included in UMTS network 100, RAS 210 and ACR 220 is Wibro network 200 Included).

The multi-band multi-mode terminal 300 is a terminal that can be selectively connected to the plurality of mobile communication networks 100 and 200, and is based on the broadcast signal transmitted from the NodeB 110, that is, the Wibro communication module (ie, the second communication of FIG. 3). Module). In detail, when the broadcast signal transmitted from the NodeB 110 includes Wibro communication parameters, the multi-band multi-mode terminal 300 determines that the Wibro network 200 exists around an area where the second communication module is located. Activate. In addition, the multi-band multi-mode terminal 300 is authenticated whether or not the terminal can be connected to the Wibro network 200 through the components of the UMTS network 100, the IP commonly used in the Wibro network 200 when the authentication is successful (Internet Protocol, hereinafter referred to as 'IP') Assigned address.

NodeB 110, which is a base station of UMTS network 100, performs wireless signal transmission, reception, wireless channel encoding and decoding, signal strength and quality measurement, baseband signal processing, radio resource management, and self maintenance. In addition, the NodeB 110 transmits a broadcast signal including the base station cell identification information to induce connection of the multi-band multi-mode terminal 300. In particular, when the service area of the Wibro network 200 exists in its service area, the NodeB 110 transmits a broadcast signal including Wibro communication parameters.

The RNC 120 allocates and releases radio channels for the multiband multimode terminal 300 connected to the UMTS network 100, controls transmission output of the multiband multimode terminal 300 and the NodeB 110, and intercell soft hand. It performs off and hard handoff decisions, transcoding and vocoding, and operation and maintenance functions for the NodeB 110.

The SGSN 130 provides an interface function with the RNC 120 and controls voice calls, data transmission and reception, and various additional services. In addition, the SGSN 130 processes the UMTS-based call connection of the multiband multimode terminal 300 connected to the UMTS network 100 and provides a connection function with another external network 200. In particular, the SGSN 130 receives an authentication result for the multiband multimode terminal 300 by requesting authentication to the AAA 140 when the multiband multimode terminal 300 requests location registration. The SGSN 130 registers the location of the multiband multimode terminal 300 in the UMTS network 100 according to the received authentication result, requests the Wibro network 200 to allocate an IP address, and allocates the IP address accordingly. To transmit to the multi-band multi-mode terminal 300.

The AAA 140 stores subscriber authentication information including information on access rights to the UMTS network 100 and information on access rights to the Wibro network 200 in response to subscriber-specific IMSI. Further, the AAA 140 authenticates whether the multiband multimode terminal 300 is a terminal having a legitimate authority in the UMTS network 100 based on the IMSI of the multiband multimode terminal 300, and the multiband. It is authenticated whether the multi-mode terminal 300 is a terminal having a legitimate authority in the Wibro network 200.

The HLR 150 stores and manages location information of the multiband multimode terminal 300 connected to the UMTS network 100. In addition, the HLR 150 stores a subscriber profile in which additional service information for each subscriber is recorded.

The RAS 210 manages and controls the radio resources of the Wibro network 200, handoff support functions, packet authentication, and functions to support the security of transmitted or received packets, QoS (Quality of Service: Quality of Service) It displays 'QoS') and performs maintenance function.

The ACR 220 routes the packet, controls the handover of the mobile communication terminal 300 occurring between the RAS 210, and performs a location registration procedure of the mobile communication terminal 300 connected to the Wibro network 200. . In addition, the ACR 220 delivers service usage data required for subscriber billing to a billing server (not shown). In particular, when the ACR 220 receives a request for the IP address allocation for the multiband multimode terminal 300 from the UMTS network 100, the ACR 220 allocates the IP address of the multiband multimode terminal 300 to the UMTS network 100. ).

2 is a flowchart illustrating a method for authenticating a multiband multimode terminal in a communication system according to an embodiment of the present invention.

Referring to FIG. 2, in order to access the UMTS network 100, the multi-band multimode terminal 300 transmits a location registration request message to the SGSN 130 via the NodeB 110 and the RNC 120 (S201). ). At this time, the multi-band multi-mode terminal 300 includes the base station (ie, NodeB) cell identification information currently located in the location registration request message and IMSI used as an authentication key in the UMTS network 100 in the location registration request message. Send to 130.

Then, the SGSN 130 transmits the IMSI of the multiband multimode terminal 300 to the AAA 140 and requests authentication of the multiband multimode terminal 300 (S203). Subsequently, based on the IMSI of the multiband multimode terminal 300, the AAA 140 first authenticates whether the multiband multimode terminal 300 is a terminal having a right access right to the UMTS network 100 (S205). ). The AAA 140 secondly authenticates whether the multiband multimode terminal 300 is a terminal having a right access right to the Wibro network 200 based on the IMSI of the multiband multimode terminal 300 (S207). Subsequently, the AAA 140 transmits an authentication result report including the first and second authentication results to the SGSN 130 (S209).

Upon receiving the authentication result report, the SGSN 130 checks whether the multi-band multi-mode terminal 300 is a terminal having access authority to the UMTS network 100, and if the terminal is a legitimate terminal, the multi-band multi-mode multicast terminal to the HLR 150. It requests the location registration of the mode terminal 300 (S211, S213). Then, the HLR 150 performs location registration based on the base station cell identification information of the multi-band multimode terminal 300 and transmits a location registration response message indicating that the location registration is normally completed to the SGSN 130 (S215). ). At this time, the HLR 150 includes the subscriber profile of the multiband multimode 300 in the location registration response message and transmits it to the SGSN 130. On the other hand, SGSN (130) if the multi-band multi-mode terminal 300 is confirmed as a terminal that can not be connected to the UMTS network 100, the multi-band multi-mode terminal 300 to inform that the UMTS network 100 is not accessible. Send a message.

SGSN 130 that has performed the normal location registration procedure to the HLR (150) of the UMTS network 100 is based on the authentication result report received from the AAA (140) multi-band multi-mode terminal 300 to the Wibro network (200) Check whether the terminal has the right access right. If the multi-band multi-mode terminal 300 is a terminal that cannot be connected to the Wibro network 200, the SGSN 130 transmits a connection disable message to the Wibro network 200 to the multi-band multi-mode terminal 300. On the other hand, SGSN 130 is a multi-band multi-mode terminal 300 is identified as a terminal that can be connected to the Wibro network 200, the ACR 220 of the Wibro network 200 of the multi-band multi-mode terminal 300 Request an IP address assignment (S217). Preferably, the SGSN 130 includes the subscriber profile of the multiband multimode terminal 300 in the IP address assignment request message and transmits the subscriber profile to the ACR 220.

Then, the ACR 220 stores the subscriber profile and allocates the IP address of the multiband multimode terminal 300 to transmit the allocated IP address to the SGSN 130 of the UMTS network 100 (S219, S221). Subsequently, the SGSN 130 transmits the allocated IP address to the multiband multimode terminal 300 via the RNC 120 and the NodeB 110 (S223).

Next, the multi-band multi-mode terminal 300 sets the received IP address to the IP address commonly used in the Wibro network 200 (S225). When the multi-band multi-mode terminal 300 is configured to be connected to the Wibro network 200 in the current location, the multi-band multi-mode terminal 300 obtains cell identification information of the Wibro base station (ie, RAS) that is currently located, and the Wibro network. In step S227, the access request message is transmitted to the ACR 220 in order to receive the mobile communication service.

Then, the ACR 220 performs the Wibro network 200 location registration for the multiband multimode terminal 300 based on the received Wibro base station (ie, ACR) identification information, and the multiband multimode terminal 300. Provides a Wibro-based mobile communication service (S229). That is, the ACR 220 performs location registration for the multiband multimode terminal 300 without providing a separate authentication procedure for the multiband multimode terminal 300 and provides a Wibro-based service. .

3 is a diagram illustrating a configuration of a multiband multimode terminal according to an embodiment of the present invention.

As shown in FIG. 3, the multi-band multi-mode terminal 300 according to an exemplary embodiment of the present invention may include a display unit 310, a memory 320, a plurality of communication modules 330 and 340, and a controller 350. Include.

The display unit 310 includes a liquid crystal display, and provides the user with information that is processed in the multiband multimode terminal 300 in an identifiable form.

The memory 320 stores user data such as an address book and a text message. In particular, the memory 320 stores the IP address commonly used in the Wibro network 200.

The first communication module 330 is selectively activated under the control of the controller 350 to receive a radio signal transmitted from the NodeB 110 of the UMTS network 100, and connects with the UMTS network 100 based on the received radio signal. . Similarly, the second communication module 340 is selectively activated under the control of the controller 350 to receive a radio signal transmitted from the RAS 210 of the Wibro network 200 and connect to the Wibro network 200.

The controller 350 controls the components of the multiband multimode terminal 300 and determines whether to activate each of the plurality of communication modules 330 and 340 based on the information received from the base stations 110 and 210.

In particular, when power is applied to the multi-band multi-mode terminal 300, the controller 350 gives priority to the UMTS network 100 to activate only the first communication module 330 and accesses the UMTS network 100. At this time, the control unit 350 receives the broadcast signal of the NodeB 110 and monitors whether the broadcast signal includes the Wibro communication parameter, and if the Wibro communication parameter is included, the Wibro network 200 is located around the current location. It determines that it exists and activates the second communication module 340.

On the other hand, the control unit 350 is connected to the UMTS network 100 at the time of initial operation when the authentication to the UMTS network 100, as well as the authentication for the Wibro network 200 through the UMTS network 100 And the result thereof is received from the UMTS network 100. In detail, the control unit 350 receives an IP address allocated from the Wibro network 200 as a result of authentication for the Wibro network 200 from the UMTS network 100, stores the received IP address in the memory 320, and stores the second communication module ( 340 and the Wibro network 200 sets the IP address as its IP address.

Accordingly, when the controller 350 activates the second communication module 340 because the broadcast signal received from the UMTS network 100 includes the Wibro communication parameter, the controller 350 omits the authentication procedure from the Wibro network 200. Determine and transmit the connection request message to the Wibro network 200 to receive the service.

4 is a flowchart illustrating a method for receiving an IP address commonly used in a Wibro network in a multiband multimode terminal according to another embodiment of the present invention.

Referring to FIG. 4, when the power is applied, the multi-band multi-mode terminal 300 communicates with the UMTS network 100 having a wider service area than the Wibro network 200 under the control of the controller 350. In operation S401, only the first communication module 330 is activated. That is, when power is applied to the multi-band multi-mode terminal 300, the controller 350 gives priority to the UMTS network 100 to activate only the first communication module 330.

Next, the control unit 350 transmits a location registration request message to the UMTS network 100 through the first communication module 330 (S403). At this time, the controller 350 transmits the IMSI of the multi-band multi-mode terminal 300 and the currently located NodeB 110 cell identification information to the SGSN 130 of the UMTS network 100 by including the location registration request message. Subsequently, the multi-band multi-mode terminal 300 is authenticated with respect to the UMTS network 100 and the Wibro network 200 through the UMTS network 100, and if both of the authentications are successful, the UMTS network 100 is transmitted through the UMTS network 100. Proceed with the location registration procedure and receives the IP address commonly used in the Wibro network 200 from the UMTS network 100 (S405).

Then, the controller 350 stores the received IP address in the memory 320 as the IP address of the Wibro network 200 (S407). Subsequently, when the controller 350 detects that the second communication parameter is included in the broadcast signal of the NodeB 110, the controller 350 activates the second communication module 340 and multiplies the IP address stored in the memory 320. Set to the IP address of 300 to communicate with the Wibro network 200 (S409, S411). At this time, the control unit 350 determines no authentication to omit the authentication procedure in the Wibro network 200 based on the set IP address, and transmits an access request message to the Wibro network 200.

FIG. 5 is a diagram illustrating a configuration of a mobile communication network in which a first communication network and a second communication network are mixed according to an embodiment of the present invention, and assumes that a heterogeneous communication network distribution is the same as that of FIG. 5. An operation of 300 and the communication system will be described by way of example.

Referring to FIG. 5, NodeBs 110-1 and 110-2, which are base stations of the UMTS network 100, and RAS 210-1, which are base stations of the Wibro network 200-1, transmit broadcast signals to multi-band multi-band. Induces the connection of the mode terminal 300. In particular, when heterogeneous communication networks are distributed in its service area, the NodeBs 110-1 and 110-2 add heterogeneous communication parameters (eg, Wibro communication parameters) to broadcast signals that are transmitted. In the mobile communication network configuration of FIG. 5, the NodeB # 2 110-2 transmits a broadcast signal to which Wibro communication parameters are added as Wibro-Cell # 1 200-1 exists in its service area. In addition, since the service area of the Wibro network 200 does not exist in the UMTS-Cell # 1 110-1, which is a service area under its control, the heterogeneous communication parameters are not included in the NodeB # 1 110-1. Transmit a broadcast signal.

In this communication environment, the multiband multimode terminal 300 located in the UMTS-Cell # 1 100-1 receives a broadcast signal transmitted from the NodeB # 1 110-1. The multi-band multi-mode terminal 300 receives a broadcast signal that does not include heterogeneous communication parameters from the NodeB # 1 110-1, thereby recognizing that the Wibro service area does not exist at the current location and thus, the second communication module. Do not activate (340). The multiband multimode terminal 300 transmits a location registration request message to the SGSN 130 in order to access the UMTS network 100. The location registration request message includes identification information of the UMTS-Cell # 1 100-1 and IMSI of the multiband multimode terminal 300.

Then, the SGSN 130 requests the AAA 140 for authentication of the multiband multimode terminal 300. The AAA 140 first authenticates whether the multi-band multi-mode terminal 300 is a terminal capable of accessing the UMTS network 100 based on IMSI of the multi-band multi-mode terminal 300, and Wibro network 200. Secondly authenticates whether the terminal is accessible to the terminal, and transmits the authentication result report recorded the two authentication results to SGSN (130). Then, the SGSN 130 performs location registration with the HLR 150 if the multiband multimode terminal 300 is a terminal capable of accessing both the UMTS network 100 and the Wibro network 200 based on the received authentication result report. The ACR 220 of the Wibro network 200 requests and receives an IP address assignment. And SGSN 130 transmits the assigned IP address to the multi-band multi-mode terminal 300.

Then, the multi-band multi-mode terminal 300 stores the IP address in the memory 320 as an IP address commonly used in the Wibro network 200. Then, when the multi-band multi-mode terminal 300 moves from the UMTS-Cell # 1 (100-1) to the UMTS-Cell # 2 (100-2) region, heterogeneous communication parameters from the NodeB # 2 (110-2) ( That is, Wibro communication parameters) are received and the second communication module 340 is activated by recognizing that the Wibro network 200 exists around the current location. When the multi-band multi-mode terminal 300 completely enters the Wibro-Cell # 1 200-1 and receives the access signal from the subscriber to the Wibro network 200, the multi-band multi-mode terminal 300 receives the allocated IP address and stores its own IP address. Set to. Subsequently, the multi-band multi-mode terminal 300 attempts to connect to the Wibro network 200 by determining the non-authentication that omits the authentication procedure in the Wibro network 200 based on the IP address. Then, the ACR 220 of the Wibro network 200 performs location registration with respect to the multiband multimode terminal 300 without undergoing a separate authentication procedure, and uses a Wibro-based service as the multiband multimode terminal 300. To provide.

As described above, the present invention integrates and simplifies the authentication procedure of the conventional dual-band multi-band multimode terminal 300, thereby saving the resources of the communication system wasted in the double authentication procedure. In addition, since the multi-band multi-mode terminal 300 according to the present invention is connected to the Wibro network 200 immediately without going through a separate authentication process, it provides a faster Wibro service to the subscriber.

Meanwhile, various embodiments have been described using the UMTS network 100 and the Wibro network 200, but instead of the UMTS network 100, a GSM network (Global System for Mobile Communications Network), Any one of a circuit switched network such as a wideband code division multiple access network (WCDMA) network, a code division multiple access network (CDMA) network, etc. may be adopted and applied to the present invention. Instead of the Wibro network 200, a mobile WiMAX network (World Interoperability for Microwave Access Network (WIMAX) network) and the like may be adopted and applied to the present invention.

While this specification contains many features, such features should not be construed as limiting the scope of the invention or the claims. Also, the features described in the individual embodiments herein can be implemented in combination in a single embodiment. Conversely, various features described in a single embodiment herein can be implemented individually in various embodiments or in combination as appropriate.

Although the operations are described in a particular order in the drawings, they should not be understood as being performed in a particular order as shown, or in a sequence of successive orders, or all described actions being performed to obtain a desired result. . In certain circumstances, multitasking and parallel processing may be advantageous. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

The method of the present invention as described above may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The following drawings, which are attached to this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.

1 is a diagram illustrating a configuration of a system for authenticating a multiband multimode terminal according to an embodiment of the present invention.

2 is a flowchart illustrating a method for authenticating a multiband multimode terminal in a communication system according to an embodiment of the present invention.

3 is a diagram illustrating a configuration of a multiband multimode terminal according to an embodiment of the present invention.

4 is a flowchart illustrating a method for receiving an IP address commonly used in a Wibro network in a multiband multimode terminal according to another embodiment of the present invention.

5 is a diagram illustrating a configuration of a mobile communication network in which a first communication network and a second communication network are mixed according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

110: NodeB 120: RNC

130: SGSN 140: AAA

150: HLR RAS: 210

220: ACR

Claims (6)

A method for authenticating a multiband multimode terminal in a communication system including a first communication network and a second communication network, Receiving, by the first communication network, a location registration request message from a multiband multimode terminal; Extracting, by the first communication network, subscriber identification information included in the location registration request message; Authenticating, by the first communication network, the access right of the first communication network and the access right of the second communication network of the multiband multimode terminal based on the subscriber identification information; Requesting, by the first communication network, the second communication network to assign an IP address of the multi-band multi-mode terminal which has been successfully authenticated; And And transmitting, by the first communication network, the IP address assigned by the second communication network to the multiband multimode terminal. The method of claim 1, Receiving, by the second communication network, a connection request from the multiband multimode terminal using the assigned IP address; And And performing, by the second communication network, location registration of the multiband multimode terminal. The method according to claim 1 or 2, The first communication network is a universal mobile telecommunications system (UMTS) network or a wideband code division multiple access (WCDMA) network, and the second communication network is a wireless broadband (WBRO) network or a world interoperability for microwave access (WiMAX) network. Multiband multimode terminal authentication method. In the multi-band multi-mode terminal selectively connected to the first communication network and the second communication network, First communication means for communicating with the first communication network; Second communication means for communicating with the second communication network; And When connecting to the first communication network through the first communication means, the authentication including the IP address assigned in the second communication network from the first communication network by performing a registration procedure for authentication with the first communication network And control means for determining, upon receipt of the success message, unauthorized authentication for the second communication network based on the reception of the IP address upon connection to the second communication network via the second communication means. The method of claim 4, wherein The control means, And firstly activating the first communication means during initial driving, and activating the second communication means when the second communication network parameter is included in the broadcast signal of the first communication network. The method according to claim 4 or 5, The first communication network is a universal mobile telecommunications system (UMTS) network or a wideband code division multiple access (WCDMA) network, and the second communication network is a wireless broadband (WBRO) network or a world interoperability for microwave access (WiMAX) network. Multiband multimode terminal.

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