KR100668596B1 - Method and System for Register of IP Address at Portable Internet Network in Case of Interworking Portable Internet Network with Other Networks - Google Patents

Abstract

The present invention relates to a method and system for registering an IP address in a portable internet network when interworking with the portable internet network and other types of networks.

The present invention provides a portable Internet network for continuing a communication service without changing an IP address of the personal subscriber station when the personal subscriber station moves from the portable Internet network to a portable internet network. A method of registering an IP address in a portable Internet network when interworking with a network of a different type, the method comprising: (a) when the personal subscriber station accesses the portable Internet network from the other type of network, Receiving, from the personal subscriber station, a registration request message including IP allocation method information on the method of allocating the IP address to the personal subscriber station and the IP address information allocated to the personal subscriber station; And (b) using the IP address information included in the registration request message, registering the IP address being used in the other type of network as the IP address of the personal subscriber station in the portable Internet network. The registration request message may include one of IP allocation method information about the method of allocating the IP address to the personal subscriber station, IP address information allocated to the personal subscriber station, ARQ information, IP version, and vendor ID information. The present invention relates to a method for registering an IP address in a portable internet network when interworking with a portable internet network and other types of networks, and a system for implementing the same.

Mobile Internet, Interworking, IP Address, Registration Request Message, Personal Subscriber Terminal, CDMA-2000

Description

Method and System for Register of IP Address at Portable Internet Network in Case of Interworking Portable Internet Network with Other Networks

1 is a block diagram showing a network structure for a Loosely-Coupled interworking scheme between a portable Internet network and another type of network according to a preferred embodiment of the present invention;

Figure 2a is a view showing a portion of the format of the conventional registration request message, Figure 2b is a view showing a portion of the format of the registration request message according to a preferred embodiment of the present invention,

3 is a block diagram showing a network structure for a tightly-coupled interworking scheme between a portable Internet network and another type of network according to a preferred embodiment of the present invention;

4 is a flowchart briefly illustrating a process of registering an IP address in a portable Internet network when the portable Internet network and another type of network are interworked according to a preferred embodiment of the present invention.

5 is a flowchart illustrating a call procedure on a personal subscriber station when a portable Internet network and another type of network are interworked according to a preferred embodiment of the present invention.

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

100, 300: personal subscriber station 110, 310: CDMA-2000 RAN

111, 311: BTS 112, 312: BSC

113, 313: PCF 120, 320: DCN

121, 321: PDSN 122: HA

123, 323: AAA server 130, 330: Mobile Internet RAN

131, 331: RAS 132, 332: ACR

140, 340: Internet

The present invention relates to a method and system for registering an IP address in a portable internet network when interworking with the portable internet network and other types of networks. More specifically, when the existing network such as the CDMA 2000 network with sufficient infrastructure (Infra Structure) and the portable Internet (PI: Portable Internet or WiBro: Wireless Broadband) network are interworked, the personal subscriber station is used in the previous network. Registering IP address in the mobile internet network when interworking with the mobile internet network and other types of networks to maintain communication service without changing the IP address with the previous network by providing the current IP (Internet Protocol) address information It relates to a method and a system.

With the rapid development of communication technology and development of various contents, various wireless communication services using a wireless network have been provided. The most basic wireless communication service is a wireless voice call service which provides a voice call to a mobile terminal user wirelessly, which can provide a service regardless of time and place. In addition, while providing a text message service to complement the voice call service, a wireless Internet service has recently emerged to provide an Internet communication service to a user of a mobile communication terminal through a wireless communication network.

As such, due to the development of mobile communication technology, a service provided by a code division multiple access (CDMA) mobile communication system transmits not only a voice service but also data such as circuit data and packet data. Is developing into a multimedia communication service.

In recent years, with the development of information and communication, IMT-2000 (International Mobile Telecommunication 2000), a third generation mobile communication system that has been standardized by ITU-R (for example, CDMA2000 1X, 3X, EV-DO, WCDMA (WideBand CDMA)) Etc.) are commercially available. IMT-2000 is CDMA 2000 1X, 3X, EV-DO, WCDMA (WideBand CDMA), etc .. It is a service that can provide wireless Internet at a transmission speed of up to 144 Kbps, much faster than the supportable data transfer rate of 14.4 Kbps or 56 Kbps. In particular, by using IMT-2000 service, it is possible to provide various multimedia services (AOD, VOD, etc.) at higher speed as well as improving existing voice and WAP service quality.

Currently, the wireless Internet technology used worldwide includes a third generation cellular system based on the aforementioned mobile telephone network and a wireless local area network (WLAN) based on IP-based packet transmission.

Existing cellular systems support high mobility and handoff, guarantee data rates required for voice calls, and additionally support packet data services. However, the existing mobile communication system has a high base station construction cost and high wireless Internet usage fee, and a small screen size of the mobile communication terminal has limited content that can be used, and provides sufficient transmission speed for packet data service. There is a limit to guarantee.

On the other hand, WLAN guarantees superior data transmission rate compared to cellular systems, but there is a problem in mobility due to radio interference and limitation in provision of public service due to problems such as narrow coverage.

In this regard, a portable internet service system, which has a transmission speed comparable to that of a WLAN, supports cellular system mobility and handoff, and provides high-speed wireless Internet service at a low price.

The portable Internet service, referred to as the 3.5 generation, uses various types of portable personal subscriber terminals such as laptops, PDAs, and handheld PCs to access the Internet in indoor and outdoor stationary environments and mobile environments at walking speeds and low to medium speeds. Information and content available services. In addition, it provides mobility of 60 km / h per hour, and the downlink transmission rate is 24.8 Mbps, but the uplink transmission rate is 5.2 Mbps, which is an IP (Internet Protocol) based wireless data system having up and down asymmetric transmission characteristics.

The portable Internet system uses the 2.3 GHz frequency band, and is orthogonal frequency division multiple access (OFDM) / time division multiple access (TDMA) and time division duplexing (TDD), which is a core technology of the next generation. Time Division Duplexing). In this case, OFDMA / TDMA is a multiple access scheme similar to TDMA, in which all subcarriers spread over the entire bandwidth are allocated to one user for a predetermined time and to another user for the next predetermined time. In addition, standardization work is currently underway to employ technologies such as Adaptive Modulation Coding (AMC), Multi Input Multi Output (MIMO), and Smart Antenna to efficiently operate radio resources.

As the new system is introduced, the interworking function between the existing network and the new network is needed. Since users require a variety of services that are not limited to the type of network, the construction of the interlocking network to meet the needs of these users is now visible. The research on 3G mobile communication and WLAN is most actively conducted on such interworking network construction. However, these networks have evolved independently and use different specifications and standards. Therefore, in order to interwork each network, various matters such as architecture, protocol structure, mobility, quality of service, authentication, security, and billing must be considered, and modification and supplementation of each matter must be accompanied.

The 3G-WLAN interworking method is classified into Loosely-Coupled interworking and Tightly-Coupled interworking.

In the Loosely-Coupled interworking scheme, a 3G network and a WLAN exist separately to perform independent services, and a gateway for authentication and billing interworking is added for roaming services that require interworking. In addition, mobility between 3G-WLAN is based on Mobile IP (MIP).

Tightly-Coupled interworking method enables WLAN access point (AP) to be connected to 3G data core network to enable integrated user authentication, billing, integrated network management, and continuous service compared to Loosely-Coupled interworking method based on MIP. The advantage is that it is easy to provide.

The Loosely-Coupled interworking scheme and Tightly-Coupled interworking scheme can be applied to 3G networks such as CDMA 2000 and portable Internet networks. However, in the Loosely-Coupled interworking system, the 3G network and the portable Internet user are independently authenticated, and the billing or mobility support management policy is maintained. In this case, it is necessary to introduce a mobile IP function to support mobility between networks. In addition, the Tightly-Coupled interworking system has a structure in which the 3G core network and the portable internet network are directly integrated. The portable internet network is directly connected to the equipment of the 3G network. It consists of a 3G access network.

In the portable Internet network, since the IP should be allocated to the personal subscriber station basically, processing of the IP used in the other type of network is problematic when the portable Internet network is interworked with the other type of network. In this case, if two networks are interworked without changing the IP, since the connectivity of the service is maintained, it is efficient. Therefore, an interworking scheme that does not require the IP change in the portable Internet network is required.

An object of the present invention to meet these requirements, when interworking existing networks, such as CDMA 2000 network currently has sufficient infrastructure (Infra Structure) and portable Internet (PI: Portable Internet or WiBro: Wireless Broadband) network, By providing IP (Internet Protocol) address information used in the previous network in the personal subscriber terminal, the portable Internet network can be used when interworking with other types of networks to continue the communication service without changing the IP address. It is to provide a method and system for registering an IP address in the Internet network.

According to a first object of the present invention, when a personal subscriber station moves from the portable internet network to a portable internet network, the communication service is continued without changing the IP address of the personal subscriber station. A method of registering an IP address in a portable internet network when interworking with a portable internet network and another type of network, comprising: (a) when the personal subscriber station accesses the portable internet network in the other type of network, Receiving from the personal subscriber station a registration request message including IP allocation method information about the method of allocating the IP address to the personal subscriber station and other IP address information allocated to the personal subscriber station in another type of network. step; And (b) using the IP address information included in the registration request message, registering the IP address being used in the other type of network as the IP address of the personal subscriber station in the portable Internet network. The registration request message may include one of IP allocation method information about the method of allocating the IP address to the personal subscriber station, IP address information allocated to the personal subscriber station, ARQ information, IP version, and vendor ID information. The present invention provides a method of registering an IP address in a portable Internet network when interworking with a portable Internet network and another type of network.

According to a second object of the present invention, when a personal subscriber station moves from a portable internet network and a network of a different type to the portable internet network, a communication service is maintained without changing an IP address of the personal subscriber station. A system for registering an IP address in a portable Internet network when interworking with a portable Internet network and another type of network, wherein when the personal subscriber station accesses the portable Internet network in the other type of network, A radio access station for receiving a registration request message from the personal subscriber station, the registration request message including IP allocation method information about the method of allocating the IP address to the personal subscriber station in the network and the IP address information allocated to the personal subscriber station. (RAS: Radio Access Station); Receiving the IP address information included in the registration request message from the RAS, and using the received IP address information, the IP address being used in the other type of network of the personal subscriber station in the portable Internet network. And an access control router (ACR) for registering with the IP address, wherein the registration request message includes IP allocation method information about a method of allocating the IP address to the personal subscriber station, and assigns it to the personal subscriber station. The present invention provides a system for registering an IP address in a portable internet network when interworking with another type of network, wherein the portable internet network includes at least one of the previously provided IP address information, ARQ information, IP version, and vendor ID information.

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 designated 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 showing a network structure for a Loosely-Coupled interworking scheme between a portable Internet network and another type of network according to a preferred embodiment of the present invention.

As shown in FIG. 1, a network structure for a Loosely-Coupled interworking scheme between a portable Internet (PI) or another type of network according to a preferred embodiment of the present invention is another type of network. A CDMA-2000 Radio Access Network (RAN) 110, a Data Communications Network (DCN) 120, a portable Internet Radio Access Network 130, and the like. As a component of the CDMA-2000 wireless access network 110, a base transceiver station (BTS) 111, a base station controller (BSC) 112, and a packet control function (PCF) ( 113), and the like, and the data communication network 120 includes a packet data serving node (PDSN) 121, a home agent (HA) 122, and an authentication server (AAA server: Authentication, Authorization, Accounting Server, hereinafter referred to as "AAA server" (123) and the like, and a radio access station (RAS: Radio Access Station, hereinafter referred to as "RAS") as a component of the portable Internet wireless access network 130 ( 131, an access control router (ACR) 132, which is an access control router that accommodates a plurality of RASs 131, and the like.

The present invention provides a system for registering IP without changing an IP address and providing an IP registration method using the same when providing an interworking function between a portable Internet network and another network. Here, other types of networks include a Code Division Multiple Access (CDMA) 2000 network, a Global System for Mobile (GSM) network, a Wideband CDMA (W-CDMA) network, or a Wireless Local Access Network (WLAN) network. It doesn't work. In this specification, for convenience of description and understanding, another type of network will be described as a CDMA 2000 network, but it is obvious that the present invention is not limited thereto.

The personal subscriber station 100 according to the preferred embodiment of the present invention refers to a mobile communication terminal using a high-speed wireless Internet service by accessing the portable Internet system according to the preferred embodiment of the present invention, and is a low power radio frequency (IF) / IF ( Intermediate Frequency (MAC) module and controller function, MAC (Media Access Control) frame variable control function, handoff function, authentication and encryption function according to service characteristics and propagation environment.

The personal subscriber station 100 according to the preferred embodiment of the present invention allocates an IP address from the CDMA-2000 wireless access network 110 when accessing the CDMA-2000 wireless access network 110 from the CDMA-2000 wireless access network 110. A registration request message including the IP allocation method information and the currently allocated IP address information of the method is transmitted to the RAS 131. Herein, the registration request message includes IP allocation method information on the method of allocating an IP address to the personal subscriber station 100, IP address information allocated to the personal subscriber station 100, ARQ information, IP version, and vendor ID information. Included.

FIG. 2A illustrates a portion of a format of a conventional registration request message, and FIG. 2B illustrates a portion of a format of a registration request message according to a preferred embodiment of the present invention.

Referring to the shaded portion of FIG. 2A, it can be seen that a conventional registration request message includes information on an IP address allocation method. That is, the IP address allocation method may be Dynamic Host Configuration Protocol (DHCP), Mobile IPv4, DHCPv6, and Mobile IPv6. However, in the field of the IP address allocation method in FIG. 2A, the personal subscriber station 100 includes only information on which IP allocation method is used. However, the present invention uses the IP address used in the previous network without reassigning IP in consideration of the continuity of the service in the redial of the handoff from the CDMA-2000 wireless access network 110. The field for using static IP should be defined in the IP allocation method field of the field, and the detailed information on the previous IP address should be included.

Accordingly, in consideration of this point, FIG. 2B shows the format of the registration request message proposed in the preferred embodiment of the present invention. Referring to FIG. 2B, a field for using static IP is defined in a field for an IP address allocation method. In addition, it further includes an IP address information field including the type, length, and actual IP address value of the IP address used in the previous CDMA-2000 wireless access network 110. As described above, the IP address information field may be viewed as an option required only when the IP address allocation method uses Static IP.

The registration request message having the format of FIG. 2B according to the preferred embodiment of the present invention is not reassigned an IP address by transmitting to the RAS 131, and is provided with an IP address in the CDMA-2000 wireless access network 110, which is a network before interworking. The same IP address can be used.

Meanwhile, the personal subscriber station 100 according to the preferred embodiment of the present invention should operate a dual stack to simultaneously use the portable Internet network and the CDMA-2000 network according to the preferred embodiment of the present invention. It should be possible to select the network to be connected according to the connection environment, which is done according to the received signal level. In addition, data applications of the personal subscriber station 100 support a static / dynamic mobile IP function so as not to terminate the ongoing service even when the access network is changed. Also, the PPP (Point to Point Protocol) setting in this process is applied only to mobile telephone calls such as CDMA 2000, but not to mobile Internet calls.

In addition, when the personal subscriber station 100 accesses the CDMA-2000 wireless access network 110 from the CDMA-2000 wireless access network 130, the network information about the CDMA-2000 wireless access network 110 is transferred to the portable Internet wireless access network 130. I can deliver it,

Meanwhile, the personal subscriber station 100 according to the preferred embodiment of the present invention may be a personal digital assistant (PDA), a cellular phone, a personal communication service (PCS) phone, a hand-held PC, or a global system for GSM. Mobile phones, wideband CDMA (W-CDMA) phones, CDMA-2000 phones, and Mobile Broadband System (MBS) phones.

The base station transmitter 111 according to the preferred embodiment of the present invention is a network endpoint device that directly interworks with a terminal by performing baseband signal processing, wired / wireless conversion, and transmitting / receiving a wireless signal in a CDMA 2000 network. The base station transmitter 111 receives a call attempt of the mobile communication terminal 100 through a traffic channel of the signal channel, and transmits the received call attempt to the base station controller 112.

The base station controller 112 according to the preferred embodiment of the present invention controls the base station transmitter 111, and assigns and releases a radio channel to the terminal, controls the transmission output of the terminal and the base station transmitter 111, and soft handoff between cells. Performs functions such as handoff and hard handoff determination, transcoding and vocoding, global positioning system (GPS) clock distribution, and operation and maintenance of the base station transmitter 111 .

The PCF 113 according to the preferred embodiment of the present invention is connected to the base station controller 112 and the PDSN 121 to perform a function of setting / maintaining / releasing a connection with the PDSN 121, and the base station controller 112 It requests radio resource (Radio Resource) allocation for packet data transmission and collects billing information and transmits it to PDSN 121. In addition, the buffering function and the state management function of the personal subscriber station 100 are performed until the packet data received from the PDSN 121 is transmitted to the personal subscriber station 100.

On the other hand, the base station controller 112 and the PCF 113 according to a preferred embodiment of the present invention, when a handoff call arrives from the portable Internet wireless access network 130, utilizes the access information of the portable Internet wireless access network 130, ACR ( It is necessary to look up the IP for 132 to obtain IP information or to transmit the access information of the portable Internet wireless access network 130 to the PDSN 121.

The PDSN 121 according to the preferred embodiment of the present invention distinguishes the previous network classification function for the personal subscriber station 100, the CDMA 2000 call from the mobile Internet call, and performs PPP (Point to Point Protocol) processing only for the CDMA 2000 call. A DHCP server function for performing an IP address assignment for the personal subscriber station 100 and the like.

The HA 122 according to the preferred embodiment of the present invention performs routing for transmitting packets from an external packet data service server such as the Internet 130, and the AAA server 123 interoperates with the RAS 131. Charge the packet data used in the personal subscriber station 100, and authenticates the connection from the personal subscriber station (100).

The RAS 131 according to the preferred embodiment of the present invention transmits data received from the ACR 132 to the personal subscriber station 100 wirelessly, and includes a low power RF / IF module and controller function, OFDMA / TDD packet scheduling, and the like. Channel multiplexing function, MAC frame variable control function according to service characteristics and propagation environment, 50 Mbps high-speed traffic real-time control function, handoff function and so on.

In addition, in the RAS 131 according to the preferred embodiment of the present invention, when the personal subscriber station 100 accesses the portable Internet wireless access network 130 from the CDMA-2000 wireless access network 110, the CDMA-2000 wireless access network 110 is provided. Receives from the personal subscriber station 100 a registration request message including IP allocation method information on the method of allocating an IP address to the personal subscriber station 100 and IP address information allocated to the personal subscriber station 100. To the ACR 132.

The ACR 132 according to the preferred embodiment of the present invention is an access control router that accommodates a plurality of RAS 131, a handoff control function between the RAS 131, a handoff function between the ACR 132, a packet routing function, and the Internet. It has a connection function and the like and is connected to an IP network.

The ACR 132 according to the preferred embodiment of the present invention receives the IP address information included in the registration request message from the RAS 131 and is being used in the CDMA-2000 wireless access network 110 by using the received IP address information. The IP address is registered as the IP address of the personal subscriber station 100 in the portable Internet wireless access network 130.

That is, the ACR 132 according to the preferred embodiment of the present invention should perform a function capable of distinguishing and processing the outgoing signal from the portable Internet wireless access network 130 and the handoff call. IP-related processing and data transmission are performed for the outgoing signal of the portable Internet wireless access network 130, and a connection with the PDSN 121 is supported for the handoff call with the CDMA-2000 wireless access network 110. In addition, the ACR 132 according to the preferred embodiment of the present invention performs a foreign agent (FA) function to support Mobile IP operation.

3 is a block diagram illustrating a network structure of a tightly-coupled interworking scheme between a portable internet network and another network according to a preferred embodiment of the present invention.

The Tightly-Coupled interworking scheme assumes that the CDMA-2000 wireless access network 310 and the portable Internet wireless access network 330 are interworked by Simple IP. The RAS-C 332 of FIG. 3 performs channel allocation and management of the RAS 331, and provides an interface for data call processing with the PDSN 321. In addition, the PDSN 121 recognizes the RAS-C 332 in the same manner as the base station controller 313 of the CDMA-2000 wireless access network 110 and performs data call processing.

The IP registration method according to the preferred embodiment of the present invention described with reference to FIG. 1 may be equally applied to both the Loosely-Coupled interworking scheme and the Tightly-Coupled interworking scheme. Therefore, the description of FIG. 3 will be replaced with the description of FIG. 1.

4 is a flowchart schematically illustrating a process of registering an IP address in a portable Internet network when the portable Internet network and another type of network are interworked according to a preferred embodiment of the present invention.

First, the personal subscriber station 100 accesses the portable Internet wireless access network 130 from another type of network such as the CDMA-2000 wireless access network 110 (S400). The personal subscriber station 100 requests a connection to the RAS 131 for handoff (S402). At this time, the personal subscriber station 100 transmits a registration request message to the RAS 131 (S404). At this time, the registration request message includes IP allocation method information about a method of allocating an IP address to the personal subscriber station 100 in another type of network and IP address information allocated to the personal subscriber station 100.

Upon receiving the registration request message, the RAS 131 transmits IP allocation method information and IP address information, etc. included in the registration request message to the ACR 132, and the ACR 132 uses this information to transmit an existing IP address. It is registered as it is (S406). In other words, rather than assigning a new IP address, the existing IP address is kept as it is.

If the registration of the IP address is successful, the personal subscriber station 100 performs data communication through a session established in the portable Internet wireless access network 130 (S408).

5 is a flowchart illustrating a call procedure on the personal subscriber station 100 when the portable Internet network and another type of network are interworked according to a preferred embodiment of the present invention.

First, the personal subscriber station 100 requests an access to the RAS 131 using an initial ranging ranging ID (S500). The RAS 131 transmits a related parameter so that the personal subscriber station 100 can obtain channel information necessary for communication from the RAS 131 (S502).

The personal subscriber station 100 transmits capability information of the terminal to the RAS 131 such as its basic CID, parameters that can be supported by the physical layer, supportable bandwidth allocation parameters, and supportable authentication policies. (S504). The RAS 131 transmits capability information acceptable to the RAS 131 among the capability information provided by the personal subscriber station 100 to the personal subscriber station 100 (S506).

The personal subscriber station 100 transmits a security and authentication request to the RAS 131 including a security association, an authentication request, a security key request, an EAP transmission request, and the like (S508). The RAS 131 transmits a response to the request of the personal subscriber station 100 in cooperation with the AAA server 123 (S510).

The personal subscriber station 100 transmits a registration request message including an ARQ, an IP management mode, an IP version, a vendor ID, IP allocation method information, and IP address information to the RAS 131 (S512). At this time, the personal subscriber station 100 modifies the registration request message to be suitable for the portable Internet wireless access network 130 using a previous access network ID (PANID) for the CDMA-2000 wireless access network 110. To pass. The RAS 131 transmits capability information and vendor information of the terminal available in the RAS 131 together with whether the registration request is successful (S514).

As described above, since the IP address used in the registration request message and the IP address information are used in the mobile Internet network as it is, the personal subscriber station 100 uses the new IP address. Instead of being assigned, the existing IP address is maintained as it is (S516).

The personal subscriber station 100 transmits traffic characteristics of the service flow, scheduling requirements, service flow convergence sublayer parameter specifications, and the like to add the service flow (S518). The RAS 131 notifies the personal subscriber station 100 that the information has been received (S520).

In addition, the RAS 131 transmits to the personal subscriber station 100 including the service flow parameter of the requested transaction and the detailed sublayer detail parameter of the service flow (S522), and the personal subscriber station 100 confirms the reception. (S524). The personal subscriber station 100 performs data communication through the session set up through this process (S526).

On the other hand, the interworking function according to a preferred embodiment of the present invention is in the form of an interlocking scheme such as Loosely-Coupled interlocking scheme, Tightly-Coupled interlocking scheme, and Smoothly-Coupled interlocking scheme complementing both described above in the 3G-WLAN interworking scheme described above. It has the feature that it is applicable regardless.

The above description is merely illustrative of the present invention, and those skilled in the art to which the present invention pertains may various modifications without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. It is intended that the scope of the invention be interpreted by the following claims, and that all descriptions within the scope equivalent thereto shall be construed as being included in the scope of the present invention.

As described above, according to the present invention, since the network interworking can be performed without changing the IP address used in the previous network when interworking with the portable Internet network and other types of networks, it is necessary to change the IP in the portable Internet wireless access network. Since there is no portable internet network, it is easy to implement the network, and the service connection is maintained at the time of handoff, thereby providing convenience to the subscriber.

Claims (20)

When the personal subscriber station moves from the portable Internet network and the other type of network to the portable internet network, it is different from the portable Internet network to continue the communication service without changing the IP address of the personal subscriber station. In the method of registering an IP address in a mobile Internet network when interworking with (a) When the personal subscriber station accesses the portable Internet network in the other type of network, IP allocation method information and the personal subscriber information about the method of allocating the IP address to the personal subscriber station in the other type of network. Receiving from the personal subscriber station a registration request message including IP address information allocated to the terminal; And (b) using the IP address information included in the registration request message, registering the IP address being used in the other type of network as the IP address of the personal subscriber station in the portable Internet network. The registration request message may include IP allocation method information, IP address information, ARQ information, IP version, and vendor ID information of the method for allocating the IP address to the personal subscriber station. A method of registering an IP address in a mobile internet network when interworking with a mobile internet network and another type of network, characterized in that it comprises one or more. The method of claim 1, The personal subscriber station operates an dual stack to simultaneously use the portable internet network and the other type of network, and the IP address in the portable internet network when interworking with the portable internet network and other types of networks. How to register. The method of claim 1, The personal subscriber station is portable when interworking with the mobile Internet network and other types of networks, which supports a static mobile IP function, a dynamic mobile IP function, and / or a simple IP function. How to register an IP address on the Internet. The method of claim 1, The method of registering the IP address, Loosely Coupled interworking scheme when the portable Internet network and the other type of network function independently of each other and Tightly Coupled interlocking scheme when the portable Internet network functions as a lower access network of the other type of network. A method of registering an IP address in a portable internet network when interworking with a portable internet network and another type of network, which is applicable to an interworking method. The method of claim 1, When the personal subscriber station accesses the portable Internet network, the IP address is registered in the portable Internet network when the portable Internet network and the other type of network are interworked with each other. Way. delete The method of claim 1, The IP allocation method information includes at least one of Dynamic Host Configuration Protocol (DHCP), Mobile IPv4, DHCPv6, Mobile IPv6, and Static IP usage. How to register an IP address. The method of claim 1, And the IP address information is an option used when the IP allocation method is a static IP usage method. The method of claim 1, The other type of network includes a CDMA 2000 network, a Global System for Mobile (GSM) network, a Wideband CDMA (W-CDMA) network, or a Wireless Local Access Network (WLAN) network. A method of registering an IP address in a mobile Internet network when interworking with a network. When the personal subscriber station moves from the portable Internet network and the other type of network to the portable internet network, it is different from the portable Internet network to continue the communication service without changing the IP address of the personal subscriber station. In a system for registering an IP address in a mobile Internet network when interworking with When the personal subscriber station accesses the portable Internet network in the other type of network, IP allocation method information and method for assigning the IP address to the personal subscriber station in the other type of network and the personal subscriber station A radio access station (RAS) for receiving a registration request message including the IP address information from the personal subscriber station; Receiving the IP address information included in the registration request message from the RAS, and using the received IP address information, the IP address being used in the other type of network of the personal subscriber station in the portable Internet network. An access control router (ACR) registered with the IP address The registration request message may include IP allocation method information, IP address information, ARQ information, IP version, and vendor ID information of the method for allocating the IP address to the personal subscriber station. A system for registering an IP address in a mobile internet network when interworking with another type of network and the mobile internet network, characterized in that it comprises one or more. The method of claim 10, In case of accessing from the other type of network to the portable Internet network, a registration request message including IP allocation method information on the method of allocating the IP address and the currently allocated IP address information is transmitted to the RAS. Personal subscriber station And a system for registering an IP address in a mobile internet network when the mobile internet network and other types of networks are interworked. The method of claim 10 or 11, The personal subscriber station operates an dual stack to simultaneously use the portable internet network and the other type of network, and the IP address in the portable internet network when interworking with the portable internet network and other types of networks. System to register it. The method of claim 10 or 11, The personal subscriber station is portable when interworking with the mobile Internet network and other types of networks, which supports a static mobile IP function, a dynamic mobile IP function, and / or a simple IP function. System that registers IP addresses on the Internet. The method of claim 10, The system for registering the IP address, Loosely Coupled interworking scheme when the portable Internet network and the other type of network function independently of each other and Tightly Coupled interlocking scheme when the portable Internet network functions as a lower access network of the other type of network. A system for registering an IP address in a portable internet network when interworking with a portable internet network and another type of network, which is applicable to an interworking method. The method of claim 10, When the personal subscriber station accesses the portable internet network, the system registers an IP address in the portable internet network at the time of interworking with the portable internet network and other types of networks. . delete The method of claim 10, The IP allocation method information includes at least one of Dynamic Host Configuration Protocol (DHCP), Mobile IPv4, DHCPv6, Mobile IPv6, and Static IP usage. System that registers IP addresses. The method of claim 10, And the IP address information is an option to be used when the IP allocation method is a static IP usage method. The method of claim 10, The other type of network includes a CDMA 2000 network, a Global System for Mobile (GSM) network, a Wideband CDMA (W-CDMA) network, or a Wireless Local Access Network (WLAN) network. System that registers an IP address in a mobile Internet network when interworking. The method of claim 10, The ACR registers an IP address in a mobile Internet network when interworking with another type of network, wherein the ACR performs a foreign agent (FA) function for supporting Mobile IP operation.

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