KR100695400B1 - Method and System for Allocating Internet Protocol Address by Using Network Access Identifier for Use in Portable Internet Network - Google Patents

Abstract

The present invention relates to an IP address allocation method and system using NAI information in a portable Internet network.

The present invention provides a portable Internet system for allocating an IP address of the terminal using NAI (Network Access Identifier) information during a session establishment process between the terminal and the base station, and receives a packet data-based wireless Internet service. A portable subscriber station (PSS) for generating a set-up request message including information, IP allocation information; An access network that provides the wireless Internet service to the PSS, receives the set-up request message sent from the PSS, generates a set-up response message including IP prefix indication information, and delivers the set-up response message to the PSS. ; Location Subscriber Register (LSR) for receiving the location information of the PSS and performing registration recognition, registration deletion, and location checking functions; AAA (Authentication, Authorization and Accounting) for billing the packet data transmitted to the PSS in conjunction with the access network, and performs subscriber authentication in conjunction with a subscriber database including subscriber information; And an IP network connecting a plurality of network devices including a router as a backbone network for transmitting and receiving the packet data, wherein the access network accommodates a plurality of RASs, and between the plurality of RASs or the RAS. An access control router (ACR) that connects the IP network, provides the packet data to the PSS wirelessly, receives the set-up request message, generates the set-up response message, and delivers the set-up response message to the PSS. It provides a mobile Internet system comprising a).

According to the present invention, since the IP address of the PSS is determined using NAI information including the IP address information during the session establishment process between the portable Internet system and the PSS without forcing the IP address to be assigned to the PSS in an IPv6 manner, a separate IP is used. There is an effect that can use a variety of content and information provided in the IPv4-based Internet without address translation.

IPv4, IPv6, Mobile Internet, IP Address Assignment

Description

Method and System for Allocating Internet Protocol Address by Using Network Access Identifier for Use in Portable Internet Network}

1 is a block diagram schematically illustrating a portable Internet system for allocating an IP address using NAI information according to a preferred embodiment of the present invention;

2 is a diagram schematically illustrating a structure of a set-up request message generated in a PSS according to an embodiment of the present invention;

3 is a block diagram schematically illustrating an ACR for reading a set-up request message including NAI information according to a preferred embodiment of the present invention;

4 is a flowchart illustrating a process of allocating an IP address by reading NAI information in a portable Internet system according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: PSS 110: access network

112, 114: RAS 116: ACR

118: LSR 120: IP network

130: AAA 140: Subscriber Database

200: user information field 202: IP version type field

204: network area field 300: data communication interface unit

302: IP information reading unit 304: control unit

306: IPv4 database unit 308: IPv6 database unit

310: linked server database unit

The present invention relates to an IP address allocation method and system using NAI information in a portable Internet network. More specifically, in a portable Internet network that can be connected to the Internet and receive various information and contents even in a stationary and medium-low speed movement state, the IP address of the terminal using NAI information during the session establishment process between the terminal and the base station The present invention relates to an IP address allocation method and system using NAI information in a portable Internet network.

As the wired and mobile telecommunications market matures, the development of the telecommunications industry through the increase of subscribers is difficult. Accordingly, a new breakthrough in the telecommunications industry has resulted in the use of the 2.3 GHz band and the convergence of mobile and wired communication environments. The technical background in which the portable Internet system has appeared briefly is as follows.

The mobile communication system has been developed through the first generation analog AMPS (Advanced Mobile Phone System) method, the second generation cellular (Cellular) / personal communication (PCS) method, and recently, the third generation high speed data. International Mobile Telecommunication-2000 (IMT-2000) has been developed. Here, the IMT-2000 service may be classified into a code division multiple access (CDMA) 2000 1X service and a CDMA 2000 1x EV-DO service, and the CDMA 2000 1X service is an IS- evolved from the existing IS-95A and IS-95B networks. By using the 95C network, this means a service capable of wireless Internet at up to 144 Kbps, much faster than the 14.4 Kbps or 56 Kbps speed supported by the IS-95 A / B network. Accordingly, the CDMA 2000 1X service enables the improvement of existing voice and WAP (Wireless Application Protocol) service quality as well as the provision of various multimedia services (AOD, VOD, etc.).

However, the existing mobile communication system that provides the wireless Internet service has a high base station construction cost, so the wireless Internet service fee is high and the screen size of the mobile communication terminal has a small screen size. There is a limit to providing the same Internet service. In addition, when using wireless local area network (WLAN) technology among wireless Internet services, there are limitations in providing wireless Internet services smoothly due to problems such as radio wave interference, narrow coverage, and no service available when moving. Therefore, a portable Internet (PI: Portable Internet or WiBro: Wireless Broadband Internet) system, which can use the same Internet service as a wired Internet environment at a low cost while moving, has emerged. In short, the portable Internet system is located in the middle of a wireless LAN system and a mobile communication-based wireless Internet system, and is connected to the Internet anytime, anywhere, at low and low speeds using PDAs, notebooks, and various other portable wireless terminals. It means a system that provides a wireless Internet service that can use a variety of information and content.

In the portable Internet system, a unique address, that is, an IP address, of a terminal capable of identifying the portable wireless terminal on the Internet is required. Currently, IP addresses for identifying terminals on the Internet use 32-bit IPv4 schemes and 128-bit IPv6 schemes. The IP address of the IPv4 method is about 4.3 billion IP addresses, which is relatively limited in IP address resources, and is mostly allocated in the wired Internet environment. On the other hand, the IPv6 IP address is forcibly allocated to the IP address of the portable wireless terminal in the portable Internet system with the number of allocable IP addresses of about 4.3 billion. Accordingly, in the portable Internet system using the IPv6 addressing method, the portable wireless terminal may not interwork with the wired Internet environment using the IPv4 addressing method.

In order to solve the above-mentioned problems, the present invention provides information on IP address allocation, for example, whether an IPv4 IP address is allocated, an IPv6 IP address is allocated, or an IP in conjunction with a DHCP server, a RADIUS server, or a Diameter server. An object of the present invention is to provide an IP address allocation method and system using NAI information in a portable Internet network that allocates an IP address of a portable wireless terminal using NAI information including information on whether an address is allocated.

Accordingly, according to a first object of the present invention, a portable Internet system for allocating an IP address of a terminal using NAI (Network Access Identifier) information in a session establishment process between a terminal and a base station, and is based on packet data. A PSS (Portable Subscriber Station) for receiving an Internet service and generating a set-up request message including the NAI information and IP allocation information; An access network that provides the wireless Internet service to the PSS, receives the set-up request message sent from the PSS, generates a set-up response message including IP prefix indication information, and delivers the set-up response message to the PSS. ; Location Subscriber Register (LSR) for receiving the location information of the PSS and performing registration recognition, registration deletion, and location checking functions; AAA (Authentication, Authorization and Accounting) for billing the packet data transmitted to the PSS in conjunction with the access network, and performs subscriber authentication in conjunction with a subscriber database including subscriber information; And an IP network connecting a plurality of network devices including a router as a backbone network for transmitting and receiving the packet data, wherein the access network accommodates a plurality of RASs, and between the plurality of RASs or the RAS. An access control router (ACR) that connects the IP network, provides the packet data to the PSS wirelessly, receives the set-up request message, generates the set-up response message, and delivers the set-up response message to the PSS. It provides a mobile Internet system comprising a).

According to a second object of the present invention, a PSS (Portable Subscriber Station) for receiving a packet data-based wireless Internet service and generating a set-up request message including Network Access Identifier (NAI) information and the wireless Internet. An ACR (Access Control Router) for providing a service to the PSS and receiving the set-up request message sent from the PSS and generating a set-up response message, which is transmitted between the access network and the PSS. A data communication interface unit for transmitting and receiving the packet data; An IP information reading unit reading the up-up request message among the packet data received from the data communication interface unit; A control unit including a storage unit for controlling overall operation with a kind of central processing unit, a storage unit having packet data analysis software, and a timer; An IPv4 database unit including IP prefix indication information about an IPv4 type IP address; An IPv6 database unit including IP prefix indication information on an IPv6 type IP address; And an interlocking server database unit including interlocking server information including an IP address in connection with any one of a Dynamic Host Configuration Protocol (DHCP) server, a RADIUS (Remote Authentication Dial-In User Sevice) server, and a DIAMETER server. It provides an ACR characterized in that.

According to a third object of the present invention, a PSS (Portable Subscriber Station) for receiving a packet data-based wireless Internet service and generating a set-up request message including Network Access Identifier (NAI) information and the wireless Internet. After providing the service to the PSS, receiving the set-up request message sent from the PSS, generating a set-up response message and receiving the location information of the access network and the PSS delivered to the PSS registration recognition , LRS (Location Subscriber Register) to perform registration deletion, location checking function and the packet data transmitted to the PSS in conjunction with the access network, and the subscriber authentication including the subscriber information in conjunction with the subscriber database AAA (Authentication, Authorization and Accounting) for performing a and backbone room for the transmission and reception of the packet data (Ba A method of allocating an IP address in a portable Internet system including an IP network connecting a plurality of network devices including a router as ckbone network), the method comprising: (a) the set-up request message in which type information about an IP address to be allocated is set; Generating and transmitting to the access network; (b) receiving a set-up response message from the access network; (c) extracting IP prefix indication information from the set-up response message; And (d) generating an IP address which is a local address.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram schematically illustrating a portable Internet system for allocating an IP address using NAI information according to a preferred embodiment of the present invention.

The mobile Internet system for allocating an IP address using NAI information according to a preferred embodiment of the present invention includes a PSS 100, an access network 110, an LSR 118, an IP network 120, an AAA 130, and a subscriber. Database 140 and the like.

A portable wireless terminal (PSS) (hereinafter, referred to as a 'PSS') 100 refers to a wireless terminal provided with a wireless Internet service from a portable internet system. The PSS 100 includes a low power radio frequency (RF) / intermediate frequency (IF) module and includes a controller function, a MAC (media access control) frame variable control function, a handover function, and authentication according to a radio wave environment. And an encryption function. In addition, the PSS 100 is equipped with a browser for accessing the Internet for connecting to a portable Internet system and using a wireless Internet service.

In addition, the PSS 100 may include a personal digital assistant (PDA), a hand-held PC, a notebook PC, a smart phone, and a multi-mode multiband (MM-MB). Band) terminal, etc. In particular, a smart phone is a terminal that combines the advantages of a mobile communication terminal and a personal digital assistant, and provides data communication functions such as schedule management, fax transmission, and Internet access, which are functions of a personal digital assistant, to the mobile communication terminal. Means an integrated terminal. In addition, the multi-mode multi-band terminal is equipped with a multi-modem chip, and means a terminal that can operate not only in the portable Internet system but also other mobile communication systems, for example, CDMA 2000 system, WCDMA system.

In the present invention, the PSS 100 generates NAI information generation software for generating a setup request message including IP allocation information and NAI (Network Access Identifier) information including information on an IP address type to be allocated from the portable Internet system. Equipped with. Here, the set-up request message is an IP address type (for example, an IP address assigned in the IPv4 manner, an IP address allocated in the IPv6 manner, or IP address) that the PSS 100 is to be allocated from the access network. Packet data including information on whether an IP address is allocated from the coordinated server to allocate. A detailed description of the set-up request message will be given with reference to FIG. 2. The packet data including the set-up request message is included in the message requesting radio resource allocation and transmitted to the access network 110 during the session establishment process.

The access network 110 includes a radio access station (RAS) 112, an access control router (ACR) 116, and , PSS (100) means a device that serves as an access point for providing a portable Internet service.

The RAS 112 is a base station of a portable Internet system and wirelessly transmits packet data received from the ACR 116 to the PSS 100 and includes a low power RF / IF module. The RAS 112 includes a controller function, orthogonal frequency division multiple access (OFDMA) / time division duplex (TDD) packet scheduling and channel It has multiplexing function, MAC frame variable control function according to service characteristics and propagation environment, 50 Mbps high speed traffic real time control function, handover function and so on. In the present invention, the RAS 112 receives the set-up request message from the PSS 100 and relays it to the ACR 116. The RAS 112 receives the set-up response message from the ACR 116 in the form of packet data. To send).

The ACR 116 is a base station controller of a portable Internet system, which receives a plurality of RASs 112 and 114 and connects the packets between the RASs 112 and 114 or between the RASs 112 and 114 and the IP network 120. Handover control function between RAS 112 and 114, handover function between ACR 116, handover function between a base station of another network (for example, CDMA 2000 network, WCDMA network, etc.) and RAS 112 and 114, packet PSS (100) through the RAS (112, 114) after performing subscriber authentication, generating a set-up response message having a routing function, an Internet connection function, etc. To pass. A detailed description of the ACR 116 will be given below with reference to FIG. 3. Here, the set-up response message refers to packet data including potential notation information for the IP address type determined to be allocated to the PSS 100.

The location subscriber register (LSR) 118 receives the location information of the PSS 100 and performs functions such as registration recognition, registration deletion, and location verification. In addition, the LSR 118 stores profile information of the PSS 100 that is waiting for a call. Here, the profile information refers to NAI (Network Access Identifier) information and / or subscribed mobile communication service information that distinguishes subscribers of the PSS 100.

The AAA (Authentication, Authorization and Accounting) 130 performs charging for the packet data used in the PSS 100 in conjunction with the ACR 116 and performs subscriber information, subscriber authentication information, and subscriber in conjunction with the subscriber database 140. Information including location registration information is generated and stored in a database, and subscriber authentication between the PSS 100 and the access network 110 for requesting wireless Internet service is performed.

IP network 120 is a backbone network for transmitting and receiving packet data in a portable Internet system, and includes a plurality of network equipment such as a router. The IP network 120 connects the ACR 116 and the AAA 130, receives packet data from an external packet data service such as the Internet (not shown), and transmits the packet data to the ACR 116. In addition, the lower network equipment (not shown) constituting the IP network 120 according to the preferred embodiment of the present invention receives the NAI information of the PSS 100 from the ACR 116 and relays to the AAA 130, the subscriber After performing authentication, the PSS 100 and the access network 110 perform a resource allocation task necessary for smoothly receiving a wireless Internet service.

2 is a diagram schematically illustrating a structure of a set-up request message generated in a PSS according to an embodiment of the present invention.

The set-up request message generated in the PSS according to the present invention is included as part of the message information related to the resource allocation operation sent to the access network 110, and includes a user information field 200 and a network area field 202. NAI information, including), and IP allocation information including an IP version type field 204.

That is, the PSS 100 sends a set-up request message to the access network 110 when the mobile network service is newly requested from the access network 110 for the reason of turn-on operation, terminal initialization operation, handover, or the like. Done. The set-up request message generally refers to a part of a data frame including parameter information (eg, a pilot channel, a synchronization channel, etc.) for allocating radio resources from the access network 110. In other words, when the PSS 100 requests the wireless Internet service to the access network 110, the PSS 100 sets information on the IP address type to be allocated to the IP version type field 204 of the IP allocation information. After the set-up message with the NAI information is generated and sent to the access network (110).

The user information field 200 means bit data including profile information about the PSS 100. Here, the profile information refers to NAI (Network Access Identifier) information and / or subscribed mobile communication service information of the PSS 100 using the portable Internet service.

The network area field 202 is a bit including information about a sub network to which the PSS 100 belongs to in the portable Internet system, for example, domain information such as '@ SKTELECOM.COM' and '@ NATE.COM'. Means data.

The IP version type field 204 means bit data including IP allocation information to be allocated from the access network 110. Here, the IP allocation information is information on the IP address type that the PSS 100 is to be assigned, and means IPv4 information on whether to receive an IPv4 IP address and IPv6 information on whether to be assigned an IPv6 IP address.

For example, assuming that IPv6 information is set as IP allocation information in the IP version type field 204, a process of allocating an IP address to the PSS 100 will be described below. The PSS 100 sets IPv6 information as type information for an IP address to be allocated to the IP version type field 202 to the access network 100 during session establishment, and ACR of the access network 110 together with NAI information. Send to (116). The ACR 116 receiving the set-up request message reads the IP version type field 204 of the IP allocation information and reads that the IP address type to be allocated is IPv6. Thereafter, the ACR 1160 reads NAI information from the set-up request message transmitted from the PSS 100, and then uses one IPv6 in the IP allocation address band of the NAI information in the IPv6 database unit 308 provided in the ACR 100. After extracting the prefix notation information, a setup-up response message including the extracted IPv6 IP prefix notation information is generated and transmitted to the PSS 100. The PSS 100 downloads the set-up response message and generates a local address, that is, a unique IP address of the terminal.

Here, the reason why the ACR 116 reads the NAI information is because the subnetwork to which the PSS 100 belongs (eg, '@ sktelecom.com' is set in the NAI information, and the IP of '@ sktelecom.com' If the address band is an IPv6 scheme), that is, IP prefix indication information corresponding to the NAI information is allocated to the PSS 100.

3 is a block diagram schematically illustrating an ACR for reading a set-up request message including NAI information according to a preferred embodiment of the present invention.

The ACR 116 reading the set-up request message including the NAI information according to the preferred embodiment of the present invention includes a data communication interface unit 200, a control unit 204, an IP information reading unit 204, and an IPv4 database unit. 206, the IPv6 database unit 208, the coordinated server database unit 210, and the like.

The data communication interface unit 200 refers to a communication interface device for receiving packet data transmitted between the access network 110 and the PSS 100. That is, the data communication interface unit 200 captures packet data transferred from the PSS 100 to the access network 110 or packet data transferred from the access network 110 to the PSS 100 and reads NAI information. In order to do this, the captured packet data is transferred to the control unit 204.

The IP information reading unit 206 reads the IP version type field 204 information of the set-up message information shown in FIG. 2 from the packet data received from the data communication interface unit 200.

The control unit 204 is a kind of central processing unit that refers to a device that controls the overall operation of the ACR 116, and includes a storage unit, a timer, and the like in which packet data analysis software is mounted. That is, the control unit 204 reads the IP version type field 204 by reading the information read from the IP information reading unit 206, that is, the information on the IP address type that the PSS 100 is to be assigned, and reads the IPv4 database. The unit 206 searches the IPv6 database unit 208 to extract IP prefix indication information that matches the IP version type field 204 to generate a set-up response message. The set-up response message generated by the controller 204 is transmitted to the PSS 100 through the data communication interface 200.

If there is no IP potential indication information to be transmitted to the PSS 100 in the IPv4 database unit 206 and the IPv6 database unit 208, the ACR 116 reads the NAI information and thus the PSS 100 belongs. After reading the lower network, the interworking server database unit 310 is searched to receive an IP address from any one of a DHCP server, a RADIUS server, and a DIAMETER server to provide an IP address assigned to the PSS 100. . In this case, the controller 204 controls the ACR 116 to operate as a client for any one of a DHCP server, a RADIUS server, and a DIAMETER server.

The IPv4 database unit 206 means a database including IP potential notation information on an IPv4 IP address, and the IPv6 database unit 208 is a database containing IP potential notation information on an IPv6 IP address. Means. Meanwhile, the interworking server database unit 210 is connected to the IP network 120 while the ACR 116 operates as a client, and then receives an IP address by interworking with any one of a DHCP server, a RADIUS server, and a DIAMETER server. Database that contains interlocking server information.

4 is a flowchart illustrating a process of allocating an IP address by reading NAI information in a portable Internet system according to a preferred embodiment of the present invention.

When the PSS 100 requests the wireless Internet service to the access network 110, that is, when the PSS 100 attempts to connect with the RAS 112, the RAS 112 may acquire channel information necessary for data communication with the PSS 100. The relevant parameter is transmitted so as to be able to transmit (S400). Here, the PSS 100 is a basic CID (Connection Identifier), parameters that can be supported in the physical layer, supportable bandwidth allocation parameters, and support to the access network 110 at the current location of the PSS 100 to which the mobile Internet service is to be provided. It transmits the location information including the available information of the terminal, such as possible authentication policy.

The ACR 116 receiving the location information from the PSS 100 relays the location information to the LSR 118, and the LSR 118 received the location information of the PSS 100 stores the location information in the database ( In step S402, the subscriber information is downloaded to the ACR 116 in step S404. Here, the subscriber information is profile information of the PSS 100, and the profile information includes NAI information and / or subscribed mobile communication service information of the PSS 100. After registering the location information, the PSS 100 performs session establishment with the access network 110.

The PSS 100 sets in the IP version type field 204 the type of IP address to be allocated from the access network 110 (whether to be assigned an IP address in an IP4 manner or an IP address in an IPv6 manner), A set-up request message is generated along with the NAI information (S406). Here, the set-up request message includes NAI information including information on a lower network to which the PSS 100 belongs and IP allocation information, that is, IPv4 information about whether to receive an IPv4-type IP address from an access network, IP version type field 204 information including IPv6 information about whether to receive an IP address. The set-up request message is included in parameter information for allocating a radio resource and transmitted to the ACR 116 (S408).

The ACR 116 receiving the set-up request message from the PSS 100 runs the on-board packet data analysis software, and the IP version type field 204 of the set-up request message through the IP information reading unit 206. The information is read (S410). That is, the ACR 116 checks the IP version type field 204 and reads the type for the IP address to which the PSS 100 is to be assigned. The ACR 116 reading the IP address type to be assigned by the PSS 100 checks whether there is IP potential indication information that can be allocated from the IPv4 database unit 306 or the IPv6 database unit 308 (S412). If extractable IP prefix indication information exists, the NAI information is read to check whether the IP prefix indication information of the corresponding IP version type can be allocated to the PSS 100 (S414). If there is IP potential indication information that can be assigned as a result of checking in step S412, and there is IP potential indication information that can be assigned as a result of checking in step S414, the IP potential notation information of the IPv4 method or the IPv6 method is extracted to set-up response. After generating a message (S416), and transmits to the PSS (100) (S418).

On the other hand, if there is no IP potential indication information that can be allocated in the IPv4 database unit 306 or the IPv6 database unit 308 as a result of the check in step S412, as a result of reading the NAI information in step S414, the IP in the assignable IP address band If the prefix notation information does not exist, the interworking server database unit 310 searches for the interlocking server information, and determines whether to receive an IP address from any one of a DHCP server, a RADIUS server, and a DIAMETER server. In this case, the ACR 116 operates as a client for any one of a DHCP server, a RADIUS server, and a DIAMETER server, receives an IP address from the interworking server with the PSS 100, and then assigns the assigned IP address to the PSS (100). Transmit (S422).

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

 As described above, according to the present invention, a setup-up request message including information on an IP address type to be allocated in a session establishment process between the portable Internet system and the PSS without forcing an IP address to the PSS in an IPv6 manner. By generating and transmitting to the access network, since the PSS is assigned the IP address of the PSS from the access network, it is possible to use various contents and information provided from the IPv4-based Internet without a separate IP address conversion.

Claims (19)

A portable Internet system for allocating an IP address of a terminal using NAI (Network Access Identifier) information during a session establishment process between a terminal and a base station. A PSS (Portable Subscriber Station) for receiving a packet data-based wireless Internet service and generating a set-up request message including the NAI information and IP allocation information; An access network that provides the wireless Internet service to the PSS, receives the set-up request message sent from the PSS, generates a set-up response message including IP prefix indication information, and delivers the set-up response message to the PSS. ; Location Subscriber Register (LSR) for receiving the location information of the PSS and performing registration recognition, registration deletion, and location checking functions; AAA (Authentication, Authorization and Accounting) for billing the packet data transmitted to the PSS in conjunction with the access network, and performs subscriber authentication in conjunction with a subscriber database including subscriber information; And IP network connecting a plurality of network equipment including a router as a backbone network for transmitting and receiving the packet data The access network includes a plurality of RASs, and connects the plurality of RASs or the RASs to the IP network, and wirelessly provides the packet data to the PSS and receives the set-up request message. And an access control router (ACR) as a packet router for generating the set-up response message and delivering the set-up response message to the PSS. The method of claim 1, The PSS includes a low power RF (Intermediate Frequency) / IF (Intermediate Frequency) module, and includes a controller function, a MAC (Media Access Control) frame variable control function, a handover function, authentication and encryption according to a radio wave environment. Features include Personal Digital Assistant (PDA), Hand-Held PC, Notebook PC, Smart Phone, Multi-Mode Multi-band (MM-MB) A portable internet system, characterized in that any one of the terminals. The method of claim 1, The PSS generates the set-up request message and sends it to the access network. After receiving the set-up response message, the PSS extracts the IP prefix indication information to generate the IP address, which is a local address of the PSS. A mobile internet system, characterized in that. The method of claim 1, And the set-up request message is a part of a data frame including parameter information (for example, pilot channel, synchronization channel, etc.) for receiving radio resource from the access network. The method of claim 1, And the NAI information is included in a part of the set-up request message information sent to the access network, and includes a user information field and a network area field. The method of claim 1, The IP allocation information is information on an IP version type to be allocated, which is one of IPv4 information on whether to receive an IPv4 IP address from the access network and IPv6 information on whether to allocate an IPv6 IP address. A portable internet system, characterized in that the data frame is set. The method of claim 1, The access network includes a low power RF / IF module, and includes a controller function, a MAC frame variable control function according to a radio wave environment, a handover function, an authentication and encryption function, and wirelessly provide the packet data to the PSS. And a RAS (Radio Access Station) for generating and transmitting the set-up response message to the PSS after receiving the set-up request message. delete The method of claim 1, When the IP prefix indication information to be allocated does not exist, the ACR searches for an interlocking server database including interlocking server information and receives the IP address from any one of a DHCP server, a RADIUS server, and a DIAMETER server. And then forwarding to the PSS. It provides a packet data-based wireless Internet service, provides a PSS (Portable Subscriber Station) for generating a set-up request message including Network Access Identifier (NAI) information and the wireless Internet service to the PSS, and An access control router (ACR) for generating a set-up response message after receiving the set-up request message transmitted, A data communication interface unit for transmitting and receiving the packet data transmitted between the access network and the PSS; An IP information reading unit reading the up-up request message among the packet data received from the data communication interface unit; A control unit including a storage unit for controlling overall operation with a kind of central processing unit, a storage unit having packet data analysis software, and a timer; An IPv4 database unit including IP prefix indication information about an IPv4 type IP address; An IPv6 database unit including IP prefix indication information on an IPv6 type IP address; And Interlocking server database unit including interlocking server information that is assigned an IP address by interworking with any one of a DHCP (Dynamic Host Configuration Protocol) server, a RADIUS (Remote Authentication Dial-In User Sevice) server, and a DIAMETER server. ACR comprising a. The method of claim 10, The set-up request message generated in the PSS includes the NAI information and IP allocation information, the NAI information includes a user information field and a network area field, and the IP allocation information includes an IP version type field. ACR characterized in that. The method according to claim 10 or 11, wherein When it is determined that the ACR includes IPv4 information as a result of reading the IP version type field, the ACR extracts the IP prefix indication information of the IPv4 scheme from the IPv4 database unit, generates the set-up response message, and delivers the set-up response message to the PSS. ACR characterized in that. The method according to claim 10 or 11, wherein If it is determined that the ACR includes IPv6 information as a result of reading the IP version type field, the ACR extracts the IP prefix indication information of the IPv6 scheme from the IPv6 database unit, generates the set-up response message, and delivers the set-up response message to the PSS. ACR characterized in that. The method of claim 10, The ACR extracts the interlocking server information from the interlocking server database unit when the IP address is allocated from the interlocking server, receives the IP address from the interlocking server, and delivers the IP address to the PSS. . It provides a packet data-based wireless Internet service, provides a PSS (Portable Subscriber Station) for generating a set-up request message including Network Access Identifier (NAI) information and the wireless Internet service to the PSS, and After receiving the transmitted set-up request message, generating a set-up response message to receive the access network and the location information of the PSS delivered to the PSS to perform the registration recognition, registration deletion, location confirmation functions AAA (Authentication, Authorization and Accounting) that performs charging for the packet data transmitted to the PSS in association with a location subscriber register (LSR) and the access network and performs subscriber authentication in conjunction with a subscriber database including subscriber information. And a router as a backbone network for transmitting and receiving the packet data. As in a portable Internet system including an IP network for connecting the network device IP address allocation, (a) generating and transmitting the set-up request message which sets the type information on the IP address to be allocated to the access network; (b) receiving a set-up response message from the access network; (c) extracting IP prefix indication information from the set-up response message; And (d) generating an IP address that is a local address IP address allocation method in a portable Internet system comprising a. The method of claim 15, The set-up request message generated in the PSS includes the NAI information and IP allocation information, the NAI information includes a user information field and a network area field, and the IP allocation information includes an IP version type field. IP address allocation method in a mobile Internet system, characterized in that. The method of claim 16, The IP version type field may be set to any one of IPv4 information on whether an IPv4 IP address is allocated from the access network and IPv6 information on whether an IPv6 IP address is allocated. How to assign an IP address The method of claim 15, wherein step (b) (b1) forwarding the set-up request message to an ACR; (b2) reading information of the IP version type field in the set-up request message in the ACR; And (b3) generating the set-up response message by extracting the IP potential indication information from a database unit according to the read result of step (b2); IP address allocation method in a portable Internet system comprising a. 19. The method of claim 18, wherein step (b2) If the IP version type field is to be assigned an IP address from the coordinated server, controlling the ACR to operate as a client of the coordinated server, and receiving the IP address from the coordinated server and transmitting the IP address to the PSS. IP address allocation method in a mobile Internet system, characterized in that.

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