MX2007012502A - A method of reconfiguring an internet protocol address in handover between heterogeneous networks. - Google Patents

Abstract

A method of communicating information in a wireless mobile communication system is disclosed. More specifically, the method includes a network for establishing handover management modules in a source network and a target network and transmitting a handover request message from the handover management module of the source network to the handover management module of the target network. Furthermore, the network is used for receiving a handover response message from the handover management module of the target network to the handover management module of the source network, wherein the handover response message includes an internet protocol address information and transmitting a handover confirmation message from the handover management module of the source network to a mobile terminal, wherein the handover confirmation message includes the internet protocol address information.

Description

METHOD OF RECONFIGURATION OF AN INTERNET PROTOCOL DIRECTION IN TRANSFER BETWEEN HETEROGENEOUS NETWORKS TECHNICAL FIELD The present invention relates to a transfer between heterogeneous networks, and more particularly, to a method for reconfiguring an IP address in a transfer between heterogeneous networks. While the present invention is suitable for a wide range of applications, it is particularly suitable for allowing a mobile subscriber station to efficiently transfer between heterogeneous networks. BACKGROUND OF THE TECHNOLOGY In general terms, the object of IEEE802.21 in progress for the International Standardization of independent transfer of medium between heterogeneous networks is to improve user comfort for mobile subscriber station devices by providing a transfer without degradation and continuity of service between heterogeneous networks. An MIH function, an event trigger, a command service and an information service (IS) are defined as the basic requirements. A mobile subscriber station (MSS) is a multimodal mode that supports at least two types of interfaces. Here, the interface can be, for example, a wireline type interface, for example Ethernet based on 802.3, a type of wireless interface based on IEEE802.XX such as IEEE802.il, IEEE802.15, IEEE802.16 and the like, a type of interface defined by the cellular standardization organization such as 3GPP and 3GPP2 and the like are possible. Figure 1 is a protocol stacking architecture diagram of a multimodal mobile subscriber station. With reference to Figure 1, a multimodal mobile subscriber station has a physical layer per mode and a medium access control layer per mode. And, an MIH layer is located below an IP layer. An independent media transfer (MIH) must be defined between IEEE802 serial interfaces or between the 802 serial interfaces such as the non-802 serial interfaces mentioned above defined by the cellular standardization organization such as 3GPP and 3GPP2. In addition, a mobility protocol of a higher layer, such as mobile IP and SIP (session initiation protocol) must be supported for the transfer service without degradation. Next, mobile IPv4 is explained. A configuration of a network that supports a mobile IP includes a home agent, a foreign agent, and a mobile subscriber station. For the operation of the mobile IP, the following functions. 1) Agent Discovery Agent discovery is a method to decide if a mobile subscriber station is currently connected to your home network or if it is in a foreign network. Through this method, the mobile subscriber station can detect that it has moved to another network. 2) Registration A registration function offers a flexible mechanism that allows a service provided in a home network to be provided intact in a new network in a way to supply current position information to a home agent in the case in which a service station mobile subscriber detects its migration to another network. 3) Routing In the case in which a mobile subscriber station is linked to an external network, a routing function is required to correctly route datagrams to be transmitted from this mobile subscriber station and to said mobile subscriber station. 4) Address to the Attention of (CoA) A mobile IP provides two types of methods of address to the attention of (Coa) of Foreign Agent (FA) and address to the attention of (CoA) co-located for the establishment of a direction to the attention of (CoA) in the case in which one mobile terminal has moved away in another subnet. The address to the Foreign Agent's attention (FA-CoA) is provided by a Foreign Agent through an Agent announcement message in which an IP address of the Foreign Agent is used as an address to the attention of (CoA). In one direction to the attention of (CoA) co-localized, an address to the attention of (CoA) is assigned to a mobile terminal through a Dynamic Terminal Configuration Protocol (DHCP) server located in a foreign network. Next, mobile IPvß is explained. Mobile IPv6 supports mobility more effectively than mobile IPv4 and has better extensibility than mobile IPv4. Basic elements and basic functions for the operation of mobile IPvß are explained below. 1) Mobile Node (MN): Terminal or router that changes its access to the network. 2) Corresponding Node (CN): Server or router that communicates with a mobile subscriber station. 3) Home Agent (HA): A router that has registration information of a mobile subscriber station between routers in a home network to send datagrams to a current location of the mobile subscriber station in an external network. 4) Address to the Attention of (CoA): Internet Protocol (IP) address connected to a mobile subscriber station that has moved to an external network. 5) Linkage: Correspondence of Address to Care (CoA) registered in a domestic agent by a mobile subscriber station and a home address of the corresponding mobile subscriber station together. 6) Linking Update (BU): It is used by a mobile subscriber station to notify HA and CNs of its address to the attention of (CoA). 7) Link Recognition (BACK): Response message to BU. 8) Linkage Request (BR): Message to request BU in the case in which a mobile subscriber station does not receive the BU before expiration of a linking subscriber information time lapse of a mobile subscriber station. 9) Acquisition of Address to Attention (CoA): Position information can be automatically configured in a mobile subscriber station change using neighbor discovery and address autoconfiguration functions. 10) Router Optimization: A corresponding mobile subscriber station can communicate directly with a mobile node without a home agent after having stored a binding information. 11) Auto-Address Configuration The auto-creation of an IP address is classified in a state that preserves the autoconfiguration of type address to acquire an address using a server such as DHCP and a non-state address autoconfiguration to create a own address on one side of terminal. In the method that the server uses, if the terminal side requests an address from the DHCP server, one of the available addresses is assigned to the terminal side by the DHCP server. In non-state type address autoconfiguration, an address is created in the form of linking its interface ID information and prefix information acquired from a router or well-known prefix information together. Next we will explain FMIPvß (Fast Transfers for Mobile IPv6). First, FMIPvβ is a protocol to reduce a global transfer delay in Layer 3 by making a rapid advancement of motion detection and acquisition of NCoA (new address to the attention of) based on Layer 2 transfer estimation information. Basic elements and messages for the operation of FMIPvß are explained in the following description. 1) PAR (Previous Access Router): Default router before transfer to a mobile node. 2) NAR (New Access Router): Default router defined in a transfer of a mobile node. 3) PCoA (Address to the Prior Care): CoA valid in a PAR subnet. 4) NCoA (New Address Attention): CoA valid from a mobile node in a NAR subnet. 5) RtSolPr: (Request for Proxy Router): Make a request for information for potential transfer through a message sent to PAR from a mobile node. 6) PrRtAdv (Proxy Router Announcement): Provides information for a neighbor link through a message sent to a mobile node from PAR and operating as a trigger for a network-initiated transfer. 7) FBU (Rapid Link Update): Message in the sense that a mobile node requests that a PAR change its place of reception of traffic in NAR. 8) FBACK (Rapid Link Recognition). Response message to FBU generated from PAR. 9) Hl (Start of Transfer): Message sent to NAR from PAR to indicate a transfer of a mobile node. 10) HACK (transfer recognition): Message sent to NAR PAR in response to Hl. 11) FNA (fast neighbor ad): Message sent to NAR from a mobile node to indicate that the mobile node confirm a use of NCoA and access a new network if you have not received FBACK yet. The MIH function is placed below an IP layer and facilitates a transfer handling process using a trigger event and an input value from a second layer (Layer 2) such as information from other networks and the like. The MIH function can include input values based on the user policy and configuration that can influence a transfer process, and general interfaces are defined between the MIH function and a third layer entity (Layer 3) such as mobile IP and SIP. These interfaces provide information of a first layer (Layer 1) (physical layer), the second layer (Layer 2) (MAC layer) and mobility management, and MIH acquires information on lower layers and network with the help of the information service and event. A higher management entity is placed on a higher layer to monitor and control bylaws of several links within a mobile subscriber station and performs functions such as a transfer control function and a device administrator function. In this case, the transfer control function and the device manager function can be located independently and respectively. Alternatively, both functions can be included together as an entity of superior administration. Figure 2 is a diagram of functional entities and transport protocol of a mobile subscriber station and network that has MIH functions, where dotted lines indicate primitives, event triggers, and the like. For fast transfer, a network layer must use information from a link layer to reestablish a connection as soon as possible. A link layer event helps estimate the movement of a user and can help a mobile subscriber station and network prepare a transfer in advance. A trigger for transfer can start with a physical layer (PHY) and a medium access control layer (MAC). An origin of this trigger can be a local stack or a remote stack. Figure 3 is a diagram of a trigger model. • An event trigger provides a state of a current signal, a change of state of another network and an estimated change, and also provides a change between a physical layer and a medium access control layer and attribute change of a specific network . Types of events can be classified into a PHY layer event, MAC layer event, administration event, L3 event, Application event and the like. A basic trigger event is explained below.

First, "LinkJp" occurs in the case in which a Layer 2 connection is established in a specific link interface and in the case in which L3 packets can be transferred from a higher layer. In this case, it is decided that all the L2 configurations that configure the link have been made. And, event sources are "Local MAC" [MAC Local] and "Remote MAC" [MAC Remote]. The parameters of "Lin _Up" are shown in Table 1. [Table 1] Networkldentifier Specific Identifier for Medium Network Usable to detect subnet change "Link_Down" occurs in the case in which an L2 connection is released in a specific interface and in the case in which it can not already transfer L3 packets. And, an event source is "Local MAC" [MAC Local]. Parameters of "Link_Down" are shown in Table 2. [Table 2] "Link_Going_Down" occurs in the case in which it is estimated that an L2 connection will link in a descending manner within a specific time. And, "Link Going Down" can be a signal to initialize a transfer procedure. Event sources are "Local MAC" [MAC Local] and "Remote MAC" [MAC Remote]. And, in Table 3, "Link_Going_Down" J parameters are shown [Table 3] "Link_Going_Up" occurs in the case in which it is estimated that an L2 connection will "link up" within a specific time. And, "Link Going Up" is used in the case in which it takes a long time to initialize a network. Event sources are "Local Mac" [MAC Local] and "Remote MAC" [MAC Remote]. The parameters of "Link_Going_Up" are shown in Table 4. [Table 4] "Link_Event_Rollback" is combined with "Link_Going_Up" or "Link_Going_Down" for your use. It is a trigger that occurs in the case in which "Link_Going_Up" or "Link_Going_Down" is estimated to not occur within a specific time even though "Link_Going_Up" or "Link_Going_Down" is transmitted. Event sources are "Local MAC" [MAC Local] and "Remote MAC" [MAC Remote]. Table 5 shows parameters of "Link_Event_Rollback". [Table 5] "Link_Available" indicates that a new specific link can be used or is available. "Link_Available" indicates the possibility that a base station or a new access point can provide a link quality better than the link quality offered by a base station or access point currently accessed by a mobile subscriber station. Event sources are "Local MAC" [MAC Local] and "Remote MAC" [MAC Remote]. And in Table 6"Link_Available" parameters are shown. [Table 6] "Link_Parameters_Change" is an event that occurs in the case where a variation of a link parameter value exceeds a specific limit. This may include a link layer parameter such as link speed, QoS (quality of service), encryption value and the like. Event sources are "Local MAC" [MAC Local] and "Remote MAC" [MAC Remote]. And in Table 7"Link_Parameters_Change" parameters are shown. [Table 7] "MIH_Scan" is a command used in the discovery of neighboring access points of a current access network by a higher layer. "MIH_Scan" is created if a higher layer entity requests a scan of an accessible network. If several links are requested, several Link_Scan commands can start with several types of request information and media. MIH_Handover_Initiate. request is a primitive used by a higher layer entity to deliver a transfer initiation intent between an MIH function of a mobile subscriber station and an MIH function of a network. MIH_Handover_Initiate. response is a primitive that indicates the corresponding information by selecting a preferable link in accordance with situations of the required links in response to MIH_Handover_Initiate. resquest A message MIH_Handover_Commit. resquest is used to initiate buffering to be performed on data to be transferred to a mobile subscriber station through the previous access point by means of the information of a previous access point in a sense that a transfer is substantially initiated for the selected link . The message MIH_Handover_Commit. response is a response message to the message MIH_Handover_Commit. resquest used to indicate the success or failure of a transfer. Figure 4 is an example diagram of a trigger that occurs until the creation of a new link since a link quality currently accessed by a mobile subscriber station has been degraded. The Information Service provides detailed information for a network necessary for network discovery and selection and must be accessible to any type of network. The information service should include information elements such as link access parameter with security mechanism, neighbor map, location, service provider, and other access information, link cost and the like. A detailed operation process of Mobile IPv4 is explained below.

First, the basic purpose of Mobile IPv4 is to support transparent mobility of a higher layer and needs for additional functions of mobile terminal, home agent and foreign agent. However, in the case of not using trajectory optimization, a corresponding node communication change with a mobile subscriber station is not necessary. In this case, the mobile terminal represents an IP terminal supported by mobility. The home agent is a router that holds location information for the mobile terminal and conducts a tunnel. And, the foreign agent refers to a mobility support router in a foreign network. Basic actions in Mobile IPv4 can be explained as shown in Figure 5. An action in accordance with the step in Figure 5 is explained below. (1) In the case in which a mobile terminal moves in a foreign network from its home network, the mobile terminal recognizes that it has moved by receiving an advertisement message broadcast from the foreign network and registers then a temporary address (CoA) that indicates your current location to a home agent in a home network. (2) In this case, CoA ßs an IP address (FA-CoA) of a foreign agent or an address assigned to the mobile terminal via DHCP or similar by the foreign network. packages sent to the mobile terminal from the outside are transferred to the home network and these packets are picked up by a home agent that recognizes a movement of a mobile subscriber station. (3) The home agent encapsulates a package delivered to the mobile terminal by focusing an FA address as a destination and then delivers it to the foreign agent. (4) The encapsulated package delivered is recovered in an initial delivery package by its de-encapsulation by the foreign agent and is then delivered to the mobile terminal. (5) The package to be delivered to a corresponding mobile terminal from the mobile terminal can be delivered directly through the foreign agent or it can be delivered using a reverse tunnel in the case of an entry filtering problem. Main functions required for Mobile IP are explained below. 1) Agent Discovery Agent discovery is a method to decide if a mobile subscriber station is currently connected to your home network or if it is in a foreign network. Through this method, the mobile subscriber station can detect if it has moved to another network. The mobile IP extends the discoverer of the ICMP changer (Internet control message protocol) [IETF RFC 1256]. An agent announcement message periodically broadcast by an agent (home agent, foreign agent) effects a mobility agent ad extension included in an ICMP router advertisement message to be transmitted. An "Agent Request" message transmitted by a mobile subscriber station to find an agent uses the same method as a conventional "ICMP Router Request" message. 2) Registration A registration function offers a flexible mechanism that allows a service provided in a home network to be provided without change in a new network to deliver current position information to a home agent in the case in which a mobile subscription station it detects its migration to another network. A Mobile IP defines two different registration procedures. In the case of using ^ FA-CoA, a mobile subscriber station must perform a registration through a foreign agent. In the case of using co-localized CoA, a mobile subscriber station makes a direct registration with a foreign agent. 3) Routing In the case where a mobile subscriber station is linked to an external network, a routing function is required to correctly route datagrams to transmit from and to this mobile subscriber station. The datagram includes multicast and broadcast packets as well as unicast packets. Figure 6 is a diagram for explaining a basic operation of Mobile IPvd in accordance with the related art. First, the operational steps of Mobile IPv6 can be explained sequentially in Figure 6. 0. MN moves away in Subnet B from Subnet A. 1. MN detects a migration using an RA message prefix information and NUD mechanism (unreachable neighbor detection). 2. Obtaining CoA per se through "Autoconfiguration and direction". 3. Sending BU message to inform CoA AHA obtained. 4. HA joins a home address of MN and CoA together and the day after Back in response to BU. 5. CN communicating first with MN transmits a packet by setting a destination address to the MN home address due to a failure to detect the MN migration. 6. HA managing MN intercepts the packet to channel it to a current MN position. 7. MN that has received the channelized package decides that the CH does not have link information and then notifies CN of its CoA by sending message from BU to CN. 8. After having stored the link information, CN communicates directly with MN using the information. Figure 7 and Figure 8 are diagrams to explain an operational process of FMIPvß. Figure 7 shows an operational procedure in "proactive" mode and Figure 8 shows an operational procedure in "reactive" mode. There is a "proactive" way to send FBU / FBACK message from a link to a PAR link and a "reactive" mode to send a FBU / FBACK message from a PAR link or to send a NAR link. In the case of a "proactive" mode, the certainty of a created NCoA is examined before releasing a connection to PAR. In the case of a "reactive" mode, NCoA's certainty is checked after a mobile node has arrived in a new subnet. A "proactive mode" operational procedure is explained with reference to Figure 7 below. 1) A mobile node discovers available APs for transfer based on layer L2 information (for example, scanning in a wireless LAN system) and then sends an RtSolPr message to PAR to obtain subset information corresponding to discovered AP identifiers . 2) The PAR that has received the RtSolPr message places the subnet information corresponding to APs in a tupio in the format [AP-ID, AR-Info] and then sends a PrRtAdv message to the mobile node. This message may be occasionally sent "requested" after the mobile node has made a router choice. 3) The mobile node creates a new address to the attention of (NCoA) based on AR-Info within the message PrRtAdv. 4) The mobile node sends the message FB requesting PAR to join PCoA and NCoA together in such a way that the packets arriving at PAR can be channeled towards NAR. 5) PAR sends a notification message indicating that the mobile node will transfer to NAR, that is, Hl. NAR that has received the message Hl performs a splice review of the NCoA created by the mobile node. If the NCoA is not adequate as a result of the splice review, NAR reconfigures a CoA for the mobile node. 6) NAR sends HACK as response message for Hl to PAR. In this case, a newly created NCoA can be included. 7) The PAR that has received the HACK sends FBACK to the mobile node and the NAR and informs that the PAR will initiate the channeling of a packet of the mobile node towards an address of a real NCoA. In this case, a connection between the mobile node and the PAR is released. 8) The package that has arrived at the PAR is sent to the NAR. 9) The mobile node sends an FNA message to the NAR as soon as a new link to the NAR has been established. Thus, you are informed that the mobile node itself is connected to a network of the NAR.

) The package is transmitted through the NAR. And a "reactive mode" operational procedure is explained below with reference to Figure 8. 1) A mobile node discovers available APs for transfer based on layer information L2 (for example, scan in a wireless LAN system) and then sends an RtSolPr message to PAR to obtain subnet information corresponding to discovered AP identifiers . 2) The PAR that has received the RtSolPr message places the subnet information corresponding to the APs in a tupio in the format [AP-ID, AR-Info] and then sends a PrRtAdv message to the mobile node. This message may occasionally be sent "requested" after the mobile node has made a router detection. 3) The mobile node creates a new address to the attention of (NCoA) based on AR-Info within the message PrRtAdv. 4) The mobile node initiates a procedure of sending a packet that arrives at the NAR immediately in the form of encapsulating a FBU message in the FNA message as soon as it is connected to the NAR. And, the mobile node makes the revision of NAR to determine if NCoA is valid! 5) The NAR sends an FB message to the PAR to join together PCoA and NCoA. If NCoA is not valid in the FBU received by the NAR, the NAR discards the FBU package and sends an announcement of router that has a substitute address there. 6) The PAR sends FBACK as response message for the FBU to the NAR. In this case, a tunnel is established between a real PAR and NAR. 7) The package that arrived in the PAR is sent to the NAR. 8) The package is transmitted through NAR. However, as mentioned in the description above, the related art presents the following problems. First, the transfer procedure L2 and the transfer procedure L3 are generated independently in case of using MIPv4, MIPv6 or FMIPvβ. Specifically, the transfer L3 is effected after the transfer L2 is completed. In this way a corresponding delay is created. Second, if a network that knows the L2 transfer directly sends a message for the L3 transfer, the L3 transfer does not know about that. Therefore, an unnecessary message transmission is required. Third, in the case in which communications between independent media transfer entities are available for a field in which the present invention is applied, no change can be made to use an IP address reconfiguration when the transfer is made. between homogeneous networks. DISCLOSURE OF THE INVENTION Accordingly, the present invention focuses on a method for reconfiguring an address of IP e4n transfer between heterogeneous networks that substantially avoids one or several problems caused by the limitations and disadvantages of the related technique. An object of the present invention is to provide a method for communicating information in a wireless mobile communication system. Another object of the present invention is to provide a method for communicating information in a wireless mobile communication system from the perspective of a mobile terminal. Advantage, objects and additional features of the present invention will be presented in part in the following description and will be apparent to those of ordinary skill in the art upon examination of the present document or may be learned from the practice of the invention. The objects and other advantages of the present invention can be achieved through the structure particularly indicated in the written description and in the claims as well as in the accompanying drawings. To achieve these objects and other advantages and in accordance with the purpose of the present invention, in accordance with what is incorporated and described in general terms herein, a method of communication and information in a system of communication or wireless includes a network for establishing transfer management modules in a source network and in a target network and transmitting a transfer request message from a transfer management module of the source network to the transfer management module of the target network. In addition, the network is used to receive a transfer response message from the target network transfer management module to the source network transfer administration module, wherein the transfer response message includes a protocol address information. of the Internet and the transmission of a transfer configuration message from the transfer management module of the source network to a mobile terminal, wherein the transfer configuration message includes the information and internet protocol address. In another aspect of the present invention, a method of communicating information in a wireless mobile communication system includes a mobile terminal for establishing in a mobile terminal a network transfer module for converging the information from the at least one module of network interface associated with the at least one homogeneous and heterogeneous network in a unified presentation, transmitting a request message requesting a message relating to Internet protocol address from the mobile terminal to a network information server, and receiving a request response message that includes an Internet protocol address information of a target network, from the server network information. It will be understood that both the foregoing general description and the following detailed description of the present invention are examples and are offered to further explain the claimed invention. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings which are included to provide a more complete understanding of the invention and are incorporated and constitute part of this application, illustrate embodiment (s) of the invention and together with the description serve to explain the principles of the invention. In the drawings: Figure 1 is a protocol architecture diagram of a multimodal mobile subscriber station in accordance with a related art. Figure 2 is a diagram of functional entities and transport protocol of a mobile subscriber station and network that has MIH functions in accordance with a related technique. Figure 3 is a structural diagram of a model of trigger in accordance with a related technique; Figure 4 is an example diagram of a trigger that occurs until the creation of a new link since a link quality currently accessed by a mobile subscriber station has been degraded in accordance with a related technique. Figure 5 is a diagram to explain a basic operation of Mobile IPv4 combined with a related technique; Figure 6 is a diagram for explaining a basic operation of Mobile IPv6 in accordance with a related technique; Figure 7 and Figure 8 are diagrams to explain an operational FMIPv6 process in accordance with a related technique; Figure 9 is a flowchart in accordance with a preferred embodiment of the present invention; Figure 10 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 11 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 12 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 13 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 14 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 15 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 16 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 17 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 18 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 19 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 20 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 21 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 22 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 23 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 24 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 25 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 26 is a flowchart in accordance with another preferred embodiment of the present invention; Figure 27 is a flowchart of compliance with another preferred embodiment of the present invention; Figure 28 is a flowchart in accordance with another preferred embodiment of the present invention; and Figure 29 is a flowchart in accordance with another preferred embodiment of the present invention. PREFERRED MODE OF THE INVENTION Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used in all drawings to refer to the same or similar parts. First, the primitives that can be used for an IP reconfiguration and address method in transfer between heterogeneous networks according to the present invention and primitives to deliver data in reception in transfer between heterogeneous networks in a new connection point for continue the service. And, the primitives proposed by the present invention can be used to obtain new access router information to acquire a new IP address from an information server. In addition, the term mobile subscriber station (MSS) can refer to a mobile terminal, a mobile node, a station mobile and similar. In addition, the sending of data between a pre-access router and a new access router that is explained by the embodiments of the present invention can be applied identically between an old connection point and a new connection point through communications of the primitives proposed by the present invention. 1) Inter_MIH. This primitive, which is an MIH signaling message between connection points (broadband wireless access network base station, wireless AP LAN, or cellular system base station), is a message transmitted for transfer by a old connection point (PoA) of a mobile subscriber station to make a request for information for a new connection point (PoA) (for example, address information of access router, information for presence or non-presence of a change of an access router, access router address information, information for presence or absence of a change of an access router, FA address information, information indicating if FA has changed, or available resources or information for a station mobile subscriber or is a message transmitted to an old PoA by a new PoA to make a request for information for a mobile subscriber station that has belonged to the old PoA. If this primitive is transmitted by including a discriminator (e.g., IP address, MAC address, ESN, etc.) capable of discriminating a mobile subscriber station that attempts to transfer to a new PoA from an old PoA, it can notify the new PoA that the specific mobile subscriber station will make a transfer. Table 8 shows an example of an Inter_MIH primitive data format. query [Table 8] 2) Inter_MIH. response This primitive, which is an MIH signaling message between connection points (wireless broadband network base station ', wireless AP LAN, or cellular system base station), is transmitted to a new PoA of a mobile subscriber station to pOartir from an old PoA or the old PoA from the new PoA to receive and respond to Inter_MIG. query In the case in which Inter_MIG. query is used for the purpose of notifying a transfer start of a specific or similar mobile subscriber station, this primitive is used as a corresponding "Acknowledge". Table 9 shows an Inter_MIH primitive format. response [Table 9] 3) IP_Information. request This primitive, which is an MIH signaling message between connection points (broadband wireless access network base station, wireless AP LAN, or base station and base station), is transmitted to a new PoA by an old PoA from a mobile subscriber station to request access router address information (for example, information included in Router Announcement) or FA (Foreign Agent) address information (for example, information included in Agent Announcement). In the case in which an old PoA has information to reach an access router connected to a new PoA to which a specific mobile subscriber station is to be moved or a foreign agent, the old PoA can transmit this message directly to the router of access or to the foreign agent. And, the old PoA can inform the new PoA that the specific mobile subscriber station is going to transfer into the new PoA through this message. In addition, the PoA or an MIH of the foreign agent that has received this primitive, can fire it to a higher layer. Table 10 shows an example of a data format of the IP_Information primitive. request. And, a mobile subscriber station can make a request for this primitive from a new PoA. [Table 10] 4) IP_Information. confirm This primitive, which is an MIH signaling message between connection points (broadband wireless access network base station, wireless AP LAN, or cellular system base station), is transmitted to effect a response to a result of new IP_Information. request from a mobile subscriber station. This primitive is transmitted by including address information (for example, information included in router advertisement) of an access route requested by IP_Information. request or FA (Foreign Agent) address information (for example, information included in agent announcement). "TimeStamp" indicates the encapsulation time to represent Mobility Agent Announcement Extension or Router Information extension reliability. This time may indicate a lapse of time after the encapsulation of Agent Announcement or Router Announcement. In the case in which this message is transferred to a mobility management entity of a mobility management station of a mobile subscriber station, the objects of this parameter are to obtain information so that the entity of mobility management (eg, Mobile IPv4, Mobile IPv6, FMIPvd, etc.) of the mobile subscriber station perform a de-encapsulation in the Agent Announcement or Router Announcement included in the message and to know the time necessary until the reception of the message. information. And, a real life duration of this message can be calculated by subtracting a time difference represented by "TimeStamp" from a lifetime that indicates a valid time of this message as an Ad Announcement parameter or Router Announcement. . • Examples of an IP_Information primitive data format. confirm [Table 11] the same content information included in the Agent Announcement provided by FA. And, this parameter is included only if the change of IP address notification is 0 (for example, CoA information, log lifetime, encapsulation information) Information of this parameter is Router included only if the type of Support of Mobility Management Protocol is 2 and it is the same information ) IP_CoA. request This primitive is transmitted to an MIH of a new PoA to make a request for address information or "Agent Advertisement" / "Router Advertisement" message to its access router or FA after have received IP_Information. request.

Table 12 shows an example of a data format of IP_CoA. request. [Table 12] 6) IP_CoA. indication This primitive is transmitted to its upper layer for an access routing or an MIH (independent transfer of FA media to make a request for address information or message "Agent Advertisement" / "Router Advertisement" [Agent Announcement / Advertisement] Router] to an access route or FA after receiving IP_CoA request The received IP_CoA request can be transparently transferred to the upper layer from the MIH., this primitive has the same format as the IP_CoA format. request. 7) IP_CoA. response This primitive is transmitted in response to MIH after an access route or an upper layer of FA has received IP_CoA. indication This primitive. includes address information from an access router or FA or message from "Agent Advertisement" / "Router Advertisement" [Agent Announcement / Router Advertisement]. This parameter has the same format as the format shown in Table 9. 8) IP_CoA. confirm This primitive is transmitted to an access router or an FAIR MIH to send address information to an access route or. FA or "Agent Advertisement" / "Router Advertisement" message to an MIH of a new PoA. A data format of IP_CoA. confirm may be identical to the format shown in Table 9. 9) New_IP_Adress_indication This MIH event is used to send information (for example, Agent Advertisement / Router Advertisement message) for a new CoA to Starting from an old CoA to a higher layer of a mobile subscriber station. This parameter can have the same format shown in Table 9. 10) IP_CoA. Info. Indication This primitive is used for an old access router of a mobile subscriber station or an MIH of FA to send the information associated with IP acquired from a new access route of the mobile subscriber station or the FA to its top layer. The upper layer provides a "Proxy Router Advertisement" message to the mobile subscriber station after receiving this primitive. This parameter can have the same format as the format shown in Table 9. 11) Start_Data_Forwarding After an old PoA from a mobile subscriber station has been notified by the mobile subscriber station that a new connection was configured, this primitive is used to request that an old access router I sent data to the mobile subscriber station to a new access router. A new PoA has been notified that a new connection configuration will be made. And, this is notified to a new access router. In this case, the new access router may request that an old access route send data to a mobile subscriber station to the new access router. In the case in which a request for data transfer and a data transfer for the continuity of service of a mobile subscriber station proposed through this message of the present invention are made between connection points, the MIH functions of the connection points can make the request for data transfer through this message. Table 13 shows an example of a format of Start_Data_Forwarding. [Table 13] 12) Start_Data_Transmission This primitive indicates that a new PoA of a mobile subscriber station informs a new access router that a new connection configuration with the mobile subscriber station has been effected and that an access router can send data to the station of mobile subscriber.

This parameter may have the same format as the format shown in Table 11. Parameters added to conventional Link_Going_Down and Link_Down to achieve the objects of the present invention are explained in the following manner. 13) Link_Going_Down In order to request IP address information of a new PoA from a current PoA after having received Link_Going_Down from its MAC layer, an MIH of a mobile subscriber station includes a MAC address for the new one PoA in the Link_Going_Down. Table 14 shows an example of a data format of Link_Going_Down [Table 14] 14) Link_Down By recent addition of an IP address of a mobile subscriber station to the related technique Link_Down, a link layer of an old PoA of the mobile subscriber station informs an MIH of this situation. The MIH remotely transmits a remote Link_Down trigger to an access router, FA, a new access route or FA to request data to the corresponding mobile subscriber station to be sent to the new access router of the mobile subscriber station or the FA. Table 15 shows an example of a data format of Link_Down [Table 15] ) IP_No_Change After an access router that supports a mobility support protocol (for example, FMIPv6) has received IP_Information. request from a subscriber station mobile or an old PoA of the mobile subscriber station, if the mobile subscriber station can use an old IP address in a new PoA after making a transfer, this primitive is used for the mobile subscriber station to notify its MY H. Table 16 shows an example of a data format of IP_No_Change. [Table 16] 16) Information Elements The following description defines POA_SUNET_INFORMATION IE associated with IP address configuration as an information element stored in an information server to be sent in accordance with a request made by a mobile subscriber station. The information element POA SUNET INFORMATION is stored in an information server and includes information for all access routers or foreign agents linked to connection points (PoAs). In particular, the POA_SUNET_INFORMATION information element includes Layer 2 and Layer 3 address mapping information. In the case where IPv4 is supported, a list of information that includes the IP address of a foreign agent (FA) capable of communicating with current PoA can be included. In the case in which IPv6 is supported, a list of information including an IP address of an access router (AR) can be included. In case of not obtaining a new IP address using the information (access router address) included in POA_SUNET_INFORMATION, a mobile subscriber station can make a direct request from an IP address to a new router using a new address information. access router acquired. Table 17 shows an example of an information element data format POA_SUNET_INFORMATION IE. [Table 17] Operations according to the method proposed by the present invention will be explained in the following description for a case of transfer using Mobile IPv4 and cases of use of Mobile IPv6 or FMIPv6 in a transfer similar to the previous case. Figure 9 is a flowchart in accordance with a preferred embodiment of the present invention.

In the case in which a mobile subscriber station uses MIPv4 OR MIPv6 as a mobility support protocol and FA-CoA or non-state address information as address to the attention of (CoA) if an FA-CoA or a non-state type address for a new PoA is assigned from an old PoA when making a transfer to the new PoA, a MAC address for the new PoA is acquired by an information service. In the description of the present invention, the term "old" may be used interchangeably with the terms "source" and / or "prior". 1) If a signal quality is degraded, a pre-link from a mobile subscriber station transmits Link_Going_Down to a higher layer that includes a higher management entity via MIH and also transmits Remote_Link_Going_Down which includes the address of a new PoA to a Old / previous PoA to an old PoA. In this case, an MIH of the mobile subscriber station is activated to send IP_Information. request to the old PoA instead of sending the Remote_Link_Going_Down. The MIH obtains information for a link layer available by periodic scans prior to the lower link layers and receives instructions from a list of link layer candidates by the top management entity to maintain corresponding information. 2) An MIH of the old PoA gets a presence or absence of presence of a change of CoA (address to the attention of) exchanging Inter_MIH_query and Inter_MIH_rsponse with an MIH of the new PoA. further, the old PoA MIH plays a role in the prior notification of the new PoA that a specific mobile subscriber station will initiate a transfer to the new PoA through this exchange of messages. Thus, the new PoA obtains additional information necessary for the transfer of the specific mobile subscriber station by requesting information from the old PoA. Through this process, a source network that includes the old PoA and a target network that includes the new PoA can establish both transfer management modules that can include any of the network transfer module (for example, MIH), a module / mobility management entity, a user plane module / entity (UPE), a mobile Internet protocol foreign agent, and an access router. Here, the source network may also include an old foreign agent / previous / access router while the target network may also include a new foreign agent / access router. The terms used above are not limited to the description in relation to Figure 9, but may be used in the description of the present invention. 3) The old PoA MIH makes a request in the form of a message for router address information PoA or address information of FA (Foreign Agent) / access router by transmission of IP_Information. request to the MIH of the new PoA. In other words, the transfer management module of the source network sends a request message for transfer to the transfer management module of the target network. If the mobile subscriber station knows an access router or FA (Foreign Agent) to access by transfer, the old PoA transmits directly IP_Information. request to the access router or to the FA. 4) Having received IP_Information. request, the MIH of the new PoA transmits IP_CoA. request to your access router or to an MIH of the FA. In e31 case in which the MIH of the old PoA transmits the IP_Information directly. request to the access router or FA MIH, the present procedure is omitted. 5) The access router or MIH of the FA transmits IP_CoA. indication to its top layer. This primitive has the same format as IP_Information. request or IP_CoA. request if IP_Information. request or IP_CoA. request is transparently supplied to the upper layer. 6) The access router or the upper layer of the FA makes a response of IP_CoA. response containing address information or message from "Agent Advertisement" / "Router Advertisement" [Agent Announcement / Router Advertisement]. 7) The access router or the MIH of the FA makes a response from IP_CoA.confirm that contains address information or "Agent Advertisement" / "Router Advertisement" message to the MIH of the new PoA . 8) The MIH of the new PoA responds by sending a message from IP_Information. confirm that it includes IP address information to the MIH of the old PoA. To put it differently, the transfer management module of the target network sends a response message to the request message as to the transfer to the transfer management module of the source network. 9) The MIH of the old PoA activates New_IP_Adress. indication that includes IP address information to the MIH or upper layer of the mobile subscriber station. That is, the transfer management module of the target network sends a configuration message for transfer that includes Internet protocol address information to the mobile terminal / mobile subscriber station. 10) A layer 2 (L2) link is established with the new PoA. 11) ~ 12) A new link of the mobile subscriber station triggers Link_Up to the upper layer that includes the top management entity and also activates Remote_Link_Up to the MIH of the new PoA. In this case if the new PoA itself recognizes that the new connection is configured through its MAC layer, a MAC layer of the new PoA can activate this to the MIH live. 13) The upper layer of the mobile subscriber station transmits a registration request message to a domestic agent. 14) The home agent makes a response from "Registration Response" to the upper layer of the mobile subscriber station. Figure 10 is a flowchart in accordance with another preferred embodiment of the present invention. In the case in which a mobile subscriber station uses MIPv4 or MlPvd, mobility support protocol and FA-CoA or non-state address information such as address to the attention of (CoA) and if an FA-CoA or a non-state address for a new PoA is assigned from an old PoA upon transfer to the new PoA; a MAC address for the new PoA is not acquired by an information service. 1) If a signal quality is degraded, a pre-link from a mobile subscriber station transmits Link_Going_Down to a higher layer that includes a higher management entity via MIH and also transmits Remote_Link_Going_Down to an old PoA. 2) The mobile subscriber station searches in available bases performing a scanning process. 3) If a new link is discovered as a result of the scanning process, Link_Available is activated to the upper layer that includes the upper management entity through the MIH. 4) A new link layer of the mobile subscriber station obtains a MAC address for PoA through a MAC configuration procedure. 5) ~ 6) The new link layer of the mobile subscriber station activates Link_Going_Up to its top management entity and also activates Remote_Link_Going_Up which includes a MAC address from a PoA to an MIH of the old PoA. In this case, the MIH of the mobile subscriber station can fire (send) IP_Information. request the old PoA instead of shooting Remote_Link_Going_Up. 7) The MIH of the old PoA obtains a presence or no presence of a change of CoA (address to the attention of) exchanging Inter_MIH. query and Inter_MIH. response with a new PoA MIH. And, the MIH of the old PoA plays a role in the pre-notification to the new PoA that a specific mobile subscriber station will initiate a transfer to the new PoA through this exchange of messages. Thus, the new PoA obtains additional information needed for transfer from the specific mobile subscriber station by requesting the information from the old PoA. 8) The MIH of the old PoA makes a request for access to the information and address of the new PoA router or address information of the FA (foreign agent) through the transmission of IP_Information. request to the MIH of the new PoA. If the mobile subscriber station knows an access router or FA (foreign agent) that can be accessed by transfer, the old PoA transmits IP_Information directly. request to the access router or to the FA. 9) After having received the IP_Information. request, the MIH of the new PoA transmits IP_CoA. request to your access router or an MIH from the FA. In the case in which the MIH of the old PoA transmits the IP_Information directly. request to the access router or the MIH of the FA, the present procedure is omitted. 10) The access router or MIH of the FA transmits IP_CoA. indication to its top layer. This primitive has the same IP_Information format. request or I P_CoA. request if IP_Information. request or IP_CoA. request is transparently delivered to the upper layer. 11) The access router or the upper layer of the FA makes a response of IP_CoA. rsponse that contains address information or message from "Agent Advertisement" / "Router Advertisement" [Agent Announcement / Router Advertisement]. 12) The access router or the MIH of the FA makes a response of IP_CoA. confirm that it contains information address or message of "Agent Advertisement" / "Router Advertisement" [Advertiser Announcement / Router Advertisement] to the MIH of the new PoA. 13) The MIH of the new PoA makes a response from IP_Information. confirm that it includes IP address information to the MIH of the old PoA. 14) The old PoA MIH fires New_IP_Adress. indication that includes IP address information to the MIH or upper layer of the mobile subscriber station. 15) A layer 2 (L2) link is established with the new PoA. 16) ~ 17) A new link of the mobile subscriber station triggers Link_Up to the upper layer that includes the top management entity and also triggers Remote_Link_Up to the MIH of the new PoA. 18) The upper layer of the mobile subscriber station transmits a registration request message to a domestic agent. 19) The domestic agent makes a response from "Registration Response". Figure 11 is a flow diagram showing another preferred embodiment of the present invention. In the case in which a mobile subscriber station uses MIPv4 or MIPv6 as a mobility support protocol and an FA-CoA or non-state address information such as address to the attention of (CoA), an FA-CoA or a non-state type address for a new PoA is assigned from an old PoA upon transfer to the new PoA. With reference to Figure 11, in a new foreign agent or a new access router (5) which is notified that a specific mobile subscriber station is going to be transferred, the new foreign agent transmits (7) "Agent Advertisement" [Agent Announcement] to the mobile subscriber station via pipeline (6) through an old foreign agent. And, the new access router transmits (7) "Router Advertisement" to the mobile subscriber station via pipeline (7) through an old access router. By doing this, the old foreign agent or the old access router provides it to the mobile subscriber station through de-channelization. In step (7), "Proxy Agent / Router Advertisement" is represented since the old foreign agent or the old access router relieves the "Agent Advertisement" sent or " Router Advertisement "[Router Advertisement] sent instead of transmitting its" Agent Advertisement "or" Router Advertisement "[Router Advertisement]. And, the rest of the steps of this modality are similar to the ones explained in the modality shown in the Figure 9. Figure 12 is a flowchart in accordance with another preferred embodiment of the present invention. In the step in which a mobile subscriber station uses MIPv4 or MIPv6 as a mobility support protocol and an FA-CoA or non-state type address information such as an address care (CoA), an FA-CoA or a non-status type address for a new PoA is assigned from an old PoA when transferring to the new PoA. With reference to Figure 12, an old foreign agent or an old access router receives and maintains information from neighboring foreign agents or neighboring access routers (1), (2). The maintenance of the information can be carried out periodically alone or it can be carried out on a non-periodic basis upon request. Steps (3), (4) and (5) are similar to steps (1) and (2) shown in Figure 9. And, an MIH of a mobile subscriber station can trigger (send) IP_Information. request instead of shooting Remote_Link_Going_Down. An MIH from an old PoA transmits IP_Information. Request an MIH from the old foreign agent or access router to request access routing address information or FA (Foreign Agent) address information from a new PoA to which a specific mobile subscriber station is going to scroll for connection (6). A corresponding primitive is delivered to an upper layer from the MIH. In this case, the primitive can be delivered transparently (7). Alternatively, the primitive can be transformed to be delivered (7). If the requested access router address information or the address information FA of the new PoA exists in the list of information maintained by the old foreign agent or access router, the existing information is delivered to the mobile subscriber station (8). ). And, the rest of the steps of the present embodiment are similar to the steps explained in the embodiment shown in Figure 9. Figure 13 is a flow chart in accordance with another preferred embodiment of the present invention. In the case in which a mobile subscriber station uses MIPv4 or MIPv6 as mobility support protocol and an FA-CoA or non-status type address information such as an address to the attention of (CoA), an FA-CoA or a non-status type address for a new PoA is assigned from an old PoA when making a transfer to the new PoA. With reference to Figure 13, an MIH of an old foreign agent or access router transmits a primitive requesting that the delivered address information of a foreign agent or access router of a new PoA must be transmitted to a higher layer of the old foreign agent or access router (8). The upper layer that has received the primitive transmits the information delivered to a mobile subscriber station (9). In the case where a connection between the mobile subscriber station and an old link is still maintained, the mobile subscriber station transmits "Registration Request" for a registration to a domestic agent via the old link (10). ). The registration request message transmitted to the domestic agent is relieved through a new foreign agent. The domestic agent transmits a reply message to approve the registration of the mobile subscriber station to the new foreign agent. Having received the reply message, the new foreign agent maintains it until Link_Up is triggered from a PoA instead of sending it to the mobile subscriber station immediately (11). The mobile subscriber station performs a new link configuration procedure. Once this link is configured, the mobile subscriber station is informed of the completion of the new link (13) and informs it to a new PoA (remote) as well (14). In the case in which the new PoA manages a link state with the subscriber station mobile itself, you can skip a notification procedure of the "remote" link configuration. When Link_Up is delivered to an MIH and upper layer of the new PoA, a discriminator of the mobile subscriber station is transmitted together to indicate that the mobile subscriber station is linked. The MIH of the new PoA notifies the new foreign agent or access router that the mobile subscriber station link has been configured (15). Since the new foreign agent or access router is notified that the binding configuration of the specific mobile subscriber station has been made, the new foreign agent or access router sends "Registration Reply" indicating that the procedure Register sent to the home agent by the corresponding mobile subscriber station through the old link has been successful (16). "Registration Reply" is sent by the home agent. The foreign agent or access router plays a role in its transmission along with the Link_Up notification instead of processing it. And, the rest of the steps of the present embodiment are similar to the steps explained in the embodiment illustrated in Figure 9. Figure 14 is a flowchart of compliance with another preferred embodiment of the present invention. In the case in which a mobile subscriber station uses MIPv4 or MIPv6 as mobility support protocol and an FA-CoA or non-status type address information such as an address to the attention of (CoA), an FA-CoA or a non-status type address for a new PoA is assigned from an old PoA when making a transfer to the new PoA. With reference to Figure 14, in the case in which the address information is unable to be transferred to a mobile subscriber station due to a reason of the type that a link is released from an old and similar PoA, as soon as it is configures a link with a new PoA (10), the new PoA transmits the address information (Agent Advertisement or Router Advertisement) received and conserved by the new PoA (11). In this case, the link configuration information can be notified directly to your MIH in the case in which a link layer of the new PoA recognizes a new connection for itself. Y. The rest of the steps of the present embodiment are similar to the steps explained in the embodiment explained in Figure 9. Figure 15 is a flowchart in accordance with another preferred embodiment of the present invention.

In the case in which a mobile subscriber station uses MIPv4 or MIPv6 as mobility support protocol and an FA-CoA or non-status type address information such as an address to the attention of (CoA), an FA-CoA or a non-status type address for a new PoA is assigned from an old PoA when making a transfer to the new PoA. With reference to the Figure, in the case in which an address information can not be transmitted to a mobile subscriber station due to a reason such as a link being released from an old and similar PoA, a new PoA notifies a new foreign agent or access router that a link to the new PoA has been configured (10), (11) and (12). As soon as the new PoA link of the mobile subscriber station is configured, the new foreign agent or access router transmits the address information (Agent Announcement or Router Announcement) (13). And, the rest of the steps of the present embodiment are similar to the steps explained in the embodiment shown in Figure 9. Figure 16 is a flowchart in accordance with another preferred embodiment of the present invention, wherein FMIPvd is used (to transmit Link_Going_Down, a PoA address of another type interface to transfer is already known). (1) It is discovered that a state of a currently accessed link is going down. And, a trigger of Link_Going_Down is transmitted to an MIH and an upper layer that requires such information. (2) Information indicating that the link is going down is transmitted to an MIH layer of a currently accessed PoA. The transmission of information can be done using Layer 2 through the link currently accessed or using Layer 3 or higher. The information contains an address of a PoA (connection point) to be accessed soon. The address of the new PoA can be obtained beforehand through an information service or a neighbor broadcast. The MIH obtains information for a link layer available by pre-ordering lower link layers to perform periodic scans, respectively, and receives instructions from a list of candidate link layers through a higher management entity to maintain the corresponding information. (3) The currently accessed PoA MIH obtains network status information from the new PoA by exchanging information (Question and Inter-MIH Response) with an MIH of a new PoA using the address of the new PoA carried by Link_Going_Down. In this case, the MIH of the mobile subscriber station can transmit IP Information. request to Current PoA instead of transmitting Link_Going_Down (unnecessary to change an IP address). A new network situation information offers a type of mobility management protocol used by a PoA to be accessed shortly by the mobile subscriber station and information in accordance with the mobility management protocol in case of the same mobility management protocol , for example, information indicating whether an FA is identical to an FA of a current PoA in the case of MIPv4 and information indicating whether an access router connected to a current PoA is identical to the information of a new PoA, etc. In this case, the information of an access router connected to the new PoA can also be obtained. The MIH of the currently accessed PoA plays a role in the notification of the new PoA in advance that a specific mobile subscriber station will initiate a transfer to the new PoA through this exchange of messages. Thus, the new PoA requests to obtain additional information necessary for the transfer of the specific mobile subscriber station from an old PoA. (4) The current PoA access router is informed that the specific mobile subscriber station is going to move to an access router connected to the new PoA using IP information request: This has the same effect of transmitting .RtSolPr (proxy of application router) from the mobile subscriber station on FMIPvd. However, since the network does fire instead of the mobile subscriber station obtained in the presence or absence to transmit RtSolPr, there is an effect that a message to send RtSolPr can be omitted from the mobile subscriber station. (5) The access router currently accessed transmits PrRtrAdv (proxy router advertisement) for the access router of the new PoA through the trigger sent from the MIH. Through this, it can be transmitted PrRtrAdv faster than RtSolPr from the mobile subscriber station. (6) A multimodal mobile subscriber station configures a new "Address to the Attention of (CoA)" that can be used by the new access router connected to the new PoA through the transmitted PrRtrAdv. (7), (8), (9), (10), (11) the multimodal mobile subscriber station and the access router perform a procedure for FMIPvd. (12) A link equal to or less than Layer 2 is configured with a new link. (13) An upper layer is sent through MIH that packages L3 can be sent due to the completion of the configuration with the new link. If this trigger is provided, a mobility management entity immediately transmits FNA (Fast Neighbor Announcement). A new access router that has received the FNA transmits the delivered packet to the mobile subscriber station. (14) The MIH of the old PoA is informed that the link to the PoA was configured as soon as step (13) was performed. (15) The MIH of the access router triggers that the MIH that has acknowledged the configuration with the new PoA was terminated should send data to the access router connected to the new PoA in this way, it can be known exactly when an old access router will send the data. An effect of the present invention is that the MIH of the access router gives instructions for sending the data knowing an exact time point by mutual communication between the MIH of the old PoA and the MIH of the access router. And, the exact time point may differ from that shown in the present modality. (16) Data is sent to the new access router of the new PoA from the old access router of the old PoA. (17) A remote trigger indicating that the new link was configured is sent to an MIH of the PoA of the new link. This step is performed at a time point similar to the time point in step (13). In this case, if the new link configuration is recognized for itself, a link layer of the new PoA can directly inform its MIH of the new link configuration. (18) The MIH of the new PoA reports an MIH of an access router connected to the new PoA that can be transmitted due to the configuration of a new link of a mobile subscriber station through communication with the MIH of the access router. (19) It is reported that an old link has been released. This step can be carried out by means of an MIH command after the configuration of the new link has been completed. Alternatively, this step is performed immediately after the new link configuration but can be maintained for a certain period of time for duplexing with the new link. (20) The access router of the new PoA triggered by the step (18) rapidly transmits data to the mobile subscriber station without delay. Figure 17 is a flow chart in accordance with another embodiment of the present invention, where FMIPv6 is used (in the transmission Li k_Going_Up, an interface PoA address of another type to be transferred is obtained with reference to Figure 17 , unlike a case in which an interface PoA address of another type to effect a transfer is already known when transmitting Link_Going_Down in the case of using FMIPvd, this modality corresponds to a case in which an address of a new PoA is known in the course of a network search of a new PoA or a method of configuring a new PoA link without knowing this information in "Link_Going_Down". (5) An MIH of an old PoA is notified that a link will be remotely configured (7). And, the other steps are similar to the steps of the previous embodiment shown in Figure 16. Figure 18 is a flowchart in accordance with another embodiment of the present invention, wherein the link to the old PoA is disconnected before set up a link with a new PoA if you use FMIPvd. With reference to Figure 18, the steps of the present modality using FMIPvd are similar to the steps of the previous modality shown in Figure 16 and correspond to a case in a step (12) where a connection to an old link is disconnected due to a reason such as migration of a mobile subscriber station and the like after performing steps (1) ~ (11) with a new access router. Once a connection with an old link is disconnected, an MIH of the mobile subscriber station of the link disconnection is notified from a lower link layer (13). If an old PoA handles a connection to the station mobile subscriber, the old PoA recognizes that the connection to the mobile subscriber station is released and then notifies an old access router that a connection of a specific mobile subscriber station (14) has been lost. The information transmitted to discriminate buna specific mobile subscriber station is an IP address or a link layer address (e.g., MAC address) used by the mobile subscriber station in an old PoA, an electronic serial number (ESN) and similar. This information is included in Remote Link Down, which is notified to the old access router through the old PoA, for transmission. The access router that has received this information delivers a specific mobile subscriber station packet whose connection is released through a pre-established tunnel (15). And, the other steps are similar to the steps explained in Figure 16. Figure 19 is a flowchart in accordance with another preferred embodiment of the present invention, wherein a packet quickly sent from a new PoA is received afterwards. of the configuration of a link by a trigger transmitted to a higher layer from an MIH in the configuration of the link with the new PoA in case to use FMIPvd. With reference to Figure 19, the steps of the present modality using FMIPv6 are similar to the steps of the previous modality shown in 'Figure 16. After performing steps (1) ~ (11) with a new access router, a configuration procedure is carried out with a new access router, a configuration procedure with a new link (12) is carried out. Once a link configuration with a new PoA is completed, an MIH is notified through a link layer of a mobile subscriber station that a new link has been configured. And, this is transmitted to a top layer that includes a mobility management entity (13). Having received the information indicating that the new link has been configured, the mode administration entity immediately transmits "Fast Neighbor Advertisement" to the new access router (17). Having received "Fast Neighbor Advertisement" Fast Neighbor Advertisement], the access router transmits a received packet to a mobile subscriber station (18). The steps (14) ~ (16) refer to a request message sent by the mobile subscriber station / mobile station to the transfer management module of the source network to effect a command in the sense of sending the data to the transfer module of the target network. After receiving the request message, the transfer management module of the target network delivers the data, as required / requested, to the transfer management module of the target network. Finally, the transfer / entity management module of the target network transmits the data delivered from the transfer management module of the source network to the origin of the request message - the mobile terminal in step (18). Figure 20 is a flowchart in accordance with another preferred embodiment of the present invention, wherein a link with old PoA is disconnected before configuring a link with a new PoA in case of using FMIPv6. In Figure 20, a packet quickly sent from a new PoA is received after a link has been configured through a trigger transmitted to a higher layer from an MIH in the configuration of the link to the new PoA. With reference to Figure 20, a new CoA is created by performing a procedure with a new access router in accordance with a procedure similar to the procedure of the previous embodiment illustrated in Figure 16 in case of using FMIPv6 (1) ~ (6) A link to an old PoA is disconnected due to a stated reason (7).

An upper layer is notified through an MIH from a link layer of a mobile subscriber station that the link was disconnected (8). The mobile subscriber station initiates a link configuration procedure with a new PoA and configures a link (9). Once the link configuration is completed, a top layer including a mobility management entity is notified of the completion of the link configuration by a new link layer of the mobile subscriber station (10). The Mobility Management Entity that has received the corresponding notification immediately sends "Fast Neighbor Advertisement (Fast Binding Update)" (Fast Neighbor Update) () so that a new access router can receive the data transmitted by establishing a tunnel with an old access router (12) (13). After the tunnel is established, the old access router transmits a packet to the new access router through the tunnel (14). And, the new access router hands out the packet to the mobile subscriber station (15). Figure 21 is a flowchart in accordance with another preferred embodiment of the present invention.

In the case in which a mobile subscriber station uses MIPv4 or FMIPv6 as mobility support protocol and an FA-CoA or non-status type address information as the address to the attention of (CoA), an information indicating that An IP address to be used in a new PoA can be used without changing a current IP address obtained from an old PoA before attempting a transfer to the new PoA. With reference to Figure 21, a mobile subscriber station triggers Remote_Link_Going_Up to an old PoA (6). The old PoA delivers IP_Information. request to find usable IP information as a new PoA by the mobile subscriber station to a new PoA (7). In this case, IP_Information. request is transmitted by including IP address information used by the old PoA. The new PoA compares the information included in IP_Information. request to an IP address (including temporary IP address) that the mobile subscriber station can use via transfer. If an old address can be used, the new PoA makes a response in the form of setting the "IP Address Change Notification" field to 1 (change of IP address not required) in IP Information. confirm (8).

The old PoA receives IP_Information. confirm and then send it to the mobile subscriber station (9). In the present modality, the response (IP_Information. Confirm) for IP_Information. request is created and delivered by the new PoA, which corresponds to a case in which the new PoA recognizes the information by listening to an announcement of a router or foreign agent connected to the new PoA. Alternatively, if there is no available address information, IP_Information. request is delivered to an access router or foreign agent in such a way that the access router or foreign agent can deliver IP_Information. confirm the new PoA in response to IP_Information. request. Thus, the new PoA is enabled to deliver it to the mobile subscriber station. Figure 22 is a flowchart in accordance with another preferred embodiment of the present invention. In the case in which a mobile subscriber station uses MIPv4 or FMIPv6 as mobility support protocol and an FA-CoA or non-state type address information such as address to the attention of (CoA), an FA-CoA or a non-state type address for a new PoA is assigned from an old PoA when making a transfer to the new PoA. With reference to Figure 22, the method of the present embodiment is similar to the procedure of previous mode shown in Figure 10. However, a mobile subscriber station transmits IP_Information. request requesting IP address information that can be used in a new PoA instead of triggering (transmitting) Remote_Link_Going_Down to an old PoA (7). Having received IP_Information. request, the new PoA compares the information included in IP_Information. request with an IP address (including a temporary IP address) that can be used by the mobile subscriber after transfer. If an old address is not usable and if the IP address must be changed, the new PoA transmits IP_Information. confirm including IP address information to the mobile subscriber station through the old PoA (12-13). In the present modality, since the new PoA does not have enough information to make a response to IP_Information. request, the information is obtained by delivering IP_CoA. request (or IP_Information. request for the same effect) to request information associated with IP from an access router or foreign agent connected to the new PoA. And, the mobile subscriber station includes this information in IP_Information. confirm for delivery. Alternatively, in the case of having sufficient information associated with IP by listening to an announcement of the access router or foreign agent, the new PoA can directly deliver the corresponding information to the mobile subscriber station. Figure 23 is a flowchart in accordance with another preferred embodiment of the present invention. In the case in which a mobile subscriber station uses MIPv4 or FMIPv6 as a mobility support protocol and an FA-CoA or non-status type address information as the address to the attention of (CoA), information indicates that the IP address information has not changed is obtained so that the mobile subscriber station delivers an IP address information request to a new PoA through an old PoA before attempting a transfer to the new PoA. With reference to Figure 23, a mobile subscriber station transmits IP_Information. request a new PoA through an old PoA (6 ~ 7). The new PoA compares the information included in IP_Information. request with an IP address (including the temporary IP address) that can be used by the mobile subscriber station after transfer. If an old address can be used, the new PoA responds to the old PoA by setting the "IP Address Change Notification" field in the IP Information message, confirm by 1 (change of IP address not necessary) (8). Having received the message IP_Information. confirm, the old PoA delivers it to the mobile subscriber station (9). In this modality, the new PoA creates and delivers the response (IP_Information. Confirm) for IP_Information. request, which corresponds to the case in which the new PoA recognizes the information by listening to an advertisement of a router or foreign agent connected to the new PoA. However, if there is no information associated with the available IP address, IP_Information. request is delivered to an access router or foreign agent in such a way that the access router or foreign agent can deliver IP_Information. confirm the new PoA in response to IP_Information. request in such a way that the new PoA can send it to the mobile subscriber station. Figure 24 is a flowchart in accordance with another preferred embodiment of the present invention wherein in the case of FMIPvd the information indicating that a previously used IP address can be used without change is obtained from an old PoA with reference to address information to use in a new PoA. With reference to Figure 24, a mobile subscriber station triggers Remote_Link_Going_Down to an old PoA (2). The old PoA transmits IP_Information. request to find out IP information that can be used in a new PoA by the mobile subscriber station to an old access router (3). If the mobile subscriber station can use a previous IP address in the new PoA without changing the previous IP address after transfer, the old access router transmits IP_No_Change its MIH (4) . The MIH of the old access router establishes the field "IP Address Notification" in the IP_Information message. confirm in 1 (change IP address not necessary) and then transmit the message to the old PoA (5). Y. the old PoA sends the message to the mobile subscriber station (6). Figure 25 is a flowchart in accordance with another preferred embodiment of the present invention wherein the cases are similar to the steps of the previous embodiment shown in Figure 16. With reference to Figure 25, a mobile subscriber station transmits IP_Information. request to request usable IP information in a new PoA instead of triggering Remote_Link_Going_Down to an old PoA (2). Having received IP_Information. request, the old PoA sends it to an old access router (3). The old access router transmits a message of proxy advertisement for a new access router to the mobile subscriber station with reference to an address of the new access router contained in the request message (4). Figure 266 is a flowchart in accordance with another preferred embodiment of the present invention wherein the cases are similar to the steps of the previous embodiment shown in Figure 24. With reference to Figure 26, a mobile subscriber station transmits IP_Information. request an old PoA instead of firing (send) Remote_Link_Going_Down. Figure 27 is a flowchart in accordance with another preferred embodiment of the present invention wherein the cases' are similar to the steps of the previous embodiment shown in Figure 16. However, an old access router obtains address information IP of a multimodal mobile subscriber station by communicating with a new access route through a new PoA and the data is sent to the new access router from the access router through the Link Up remote link. With reference to Figure 26, the information indicating that a state of a currently accessed link is descending has been discovered. And, the Link Going Down transfer is transmitted to an MIH and an upper layer that you need this information (1). And, the information indicating that the link is descending is transmitted to an MIH layer of a currently accessed PoA. The transmission of information can be done using Layer 2 through a link or using layer 3 or higher. The information contains an address of a PoA (connection point) to be accessed soon. The address of the new PoA can be obtained through an information service in advance or it can be obtained through a neighboring broadcast. The MIH obtains information for an available link layer by giving instructions previously to periodically scan lower link layers and receives instructions from a list of candidate link layers by a higher management entity to maintain the corresponding information (2). An MIH of a currently accessed PoA obtains a PoA's network status information by exchanging information (Question and Inter-MIH Response) with an MIH of the new PoA using an address of the new PoA carried by Link Going Down (3). An MIH of an old PoA makes a request for IP address information for the mobile subscriber station to be used after transfer to a new access router through the MIH of the new PoA. And, the MIH of the old PoA plays a role in notifying the new PoA through this exchange of messages that a station of Specified mobile subscriber will start a transfer to the new PoA. Thus, the new PoA requests the obtaining of additional information necessary for the transfer of the specific mobile subscriber station from the old PoA (4) ~ (7). The address information is notified to an old access router through IP information response (8). A currently accessed access router receives information for an access router of the new PoA and then transmits PrRtAdv (proxy router advertisement) that carries the information to the mobile subscriber station (9). The multimodal mobile subscriber station configures "New Care of Address (NCoA)" which can be used by the new access router connected to the new PoA through the received PrRtAdv (10). The multimodal mobile subscriber station and the access router perform a procedure for (11) (12) (13) (14) (15). A link equal to or less than Layer 2 is configured with a new link (16). Information indicating that the mobile subscriber station to be transferred to the new access router is secured in such a way that the link configuration with the new link be notified to the new PoA and an MIH of the new access router via Remote Link Up as well as an upper layer (17) ~ (19). The MIH of the new access router that has received Remote Link Up instructs to transfer data from the old access router by sending Start_data_Forward to the old access router. In the case in which the data transfer is performed between two PoAs, the MIH of the new PoA can give identical instructions in the sense of sending data by transmitting Start_data_Forward to an MIH of the old access router (20). A packet is sent to the new access router from the old access router (21). It is notified that the old link is disconnected. This procedure can be done through an MIH command after making the configuration with the new link. This procedure is carried out immediately after the configuration of the new link. However, this method can be sustained for a predetermined time for duplexing with the new link (22). Knowing that the link between the mobile subscriber station and the new PoA has been made, the access router of the new PoA immediately transmits the data sent to it. the multimodal mobile subscriber station without delay (23). Figure 28 is a flowchart in accordance with another preferred embodiment of the present invention wherein an MIH level transfer scenario is shown using a command proposed by the present invention.

With reference to Figure 28, an old link of a mobile subscriber station discovers that a state of a currently accessed link is descending and then transmits a trigger from Link_Going_Down. indication to an MIH and a higher layer that requires such information (1) • The uplayer instructs an available link to scan through an MIH_Scan command to the MIH. A new link available for transfer informs that your link is available for transfer informs that your link is available for a transfer through Link_Available. The MIH of the mobile subscriber station transmits its intention to transfer to a potentially available transfer link through a scan by sending MIH_Handover_Initiate. request an MIH from an old PoA (4). The MIH of the old PoA finds out the MIH of the new PoA on whether a proposed new link resource is sufficient and simultaneously informs the MIH of the new PoA that the mobile subscriber station will transfer to a corresponding PoA, through Inter_MIH. query The MIH of the new PoA informs an MIH of the old PoA of a requested result through Inter_MIH. query through Inter_MIH. response The old PoA informs the mobile subscriber station of a PoA available for transfer based on information obtained through Inter_MIH. query and Inter_MIH. response In this case, the old PoA may be selected to indicate a link different from the link requested by the mobile subscriber station (7). To obtain IP address information for the selected link in advance, the mobile subscriber station transmits IP_Information. request to the MIH of the new PoA. Alternatively, the MIH of the old PoA that has obtained the selected link through Inter_MIH. response can request a new IP address from the mobile subscriber station directly transmitting IP_Information. request to the MIH of the new PoA (7). The PoA MIH requests and obtains a new IP address from the mobile subscriber station from a connected access router (8) - (12). The MIH of the new PoA transmits the IP address obtained to the mobile subscriber station through IP Information. response The mobile subscriber station informs the MIH of the old PoA by transmitting MIH_Handover_Commit. response to the MIH of the old PoA (14). The old PoA transmits MIH_Handover_Commit. response to the mobile subscriber station in response to MIH_Handover_Comir.it. request. The new mobile subscriber station link announces that the mobile subscriber station has achieved the new link configuration by transmitting Link_Up to a higher layer and remotely transmits Link_Up to the MIH of the new PoA (16). The MIH of the new PoA requests data to be sent to the new PoA from the old PoA by sending a Start_Data_Fordward to the old access router. Thus, a packet is sent to the new access router from the old access router (17) (18). Alternatively, the request for data transmission can be achieved in such a way that the new PoA makes a request to the new access router for the sending of data and that the new access router makes a request to the old access router. In the case in which data is sent between PoAs, the data is sent to send data in such a way that the new PoA delivers Start_Data_Fordward to the old PoA without making a request to the access router.

Figure 29 is a flowchart in accordance with a further preferred embodiment of the present invention wherein an IP address is configured in advance through an information server proposed by the present invention using preconfiguration of an IP address to be used. after the transfer. With reference to Figure 29, an old / source / previous link of a mobile subscriber station obtains information indicating that a state of a currently accessed link is descending and then transmits a Link_Going_Down trigger. indication to an MIH and a higher layer that requires such information. The information is then delivered to an old PoA. In this case, an address (MAC address or IP address) of a PoA to be accessed soon will be included in the information to be delivered (1). Knowing the information indicating that the mobile subscriber station link is descending and the PoA address to which the mobile subscriber station will move, the old PoA makes a request to an information server for information associated with the mobile address configuration. IP usable in the new PoA by the mobile subscriber station (2). In other words, the mobile subscriber station / mobile terminal establishes a network transfer module (e.g., MIH) m to converge the information of at least one network interface module. (for example, MAC) associated with at least one of the following: a homogeneous network or a heterogeneous network in a unified presentation. Then, the mobile subscriber station sends a inquiry message requesting a message related to the Internet protocol address from a mobile subscriber station / terminal to an information server of a network. The information server delivers the information associated with the IP address configuration to the PoA that made the request (3). The information associated with the IP address is output to the mobile subscriber station to be sent to the upper layer of the mobile subscriber station (3). In other words, the mobile subscriber station receives a reply message in response to the inquiry request message, which includes Internet protocol address information of a target network, from the network information server. Alternatively, another method for receiving IP address configuration information through an information service corresponds to a method in which an MIH of a mobile subscriber station directly requests and receives information from an information server. The mobile subscriber station makes a request to the information server for information associated with IP address (4).

The information server delivers to the mobile subscriber station requesting IP address associated information usable in the new PoA after transfer. The information is then delivered to the upper layer of the mobile subscriber station (5). The upper layer of the mobile subscriber station, i.e., a layer associated with the IP address configuration, eg, an IP layer or a mobility protocol administration layer transmits "Router Solicitation" in the case of IPv6 or "Agent Solicitation" in the case of mobile IPv4 to configure an IP address before the transfer. The "Router Solicitation" or "Agent Solicitation" is delivered to an access router to be used in the new PoA or foreign agent through unicast or channeled to an access router of a current PoA or a foreign agent (6). The access router or foreign agent that has received the "Router Solicitation" or "Agent Solicitation" from the mobile subscriber station transmits a corresponding response to the mobile subscriber station by unicast or pipelining (7) The mobile subscriber station configures a link with a new PoA (9). The upper layer is informed through the MIH of the mobile subscriber station that a new link has been configured (10). Since an IP layer packet can be transmitted due to the configuration of the new link, the upper layer performs a registration procedure with a home agent (11) (12). As another method of IP address configuration, there is a method in which a mobile subscriber station obtains a DHCP server address from a new PoA through an information server and in which an IP address to be used by the new PoA is assigned with communications with a DHCP server through an old PoA before a mobile subscriber station initiates a transfer. Therefore, in the method of IP address reconfiguration in transfer between heterogeneous networks, by enabling a Layer (3) (L3) to recognize a Layer 2 (L2) transfer through communications between MIHs, it is possible to avoid the transmission of unnecessary messages and reduce the time required for the transfer. It will be apparent to persons skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. the invention. Accordingly, it is contemplated that the present invention encompass the modifications and variations of this invention provided they are within the scope of the appended claims and their equivalents.

Claims (16)

1. CLAIMS 1. A method for communicating information in a wireless mobile communication system, the method comprising: establishing transfer management modules in a source network and in a target network; transmitting a transfer request message from the source network transfer management module to the target network transfer management module; receiving a transfer response message from the target network transfer management module to the source network transfer management module, wherein the transfer response message includes an Internet protocol address information; and transmitting a transfer confirmation message from the transfer management module of the source network to a mobile terminal, wherein the transfer confirmation message includes the Internet protocol address information.
2. 2. The method according to claim 1, wherein the mobile terminal is multimodal.
3. 3. The method according to claim 1, wherein the transfer management module comprises any of the following: network transfer module, mobility management module, plane module user, mobile Internet protocol foreign agent, and access router.
4. The method according to claim 3, wherein the network transfer module is for communicating information from at least one network interface module associated with at least one of the following: a homogeneous network and a heterogeneous network to a higher management module.
5. The method according to claim 3, wherein the mobility management module manages and stores context of the mobile terminal, generates and assigns temporary identities to the mobile terminals, reviews the authorization, and authenticates the user.
6. The method according to claim 3, wherein the user plane module terminates for mobile terminals in idle state the downlink data path and triggers, initiates the location when the downlink data arrives for the mobile terminal , manages and stores mobile terminal contexts and replicates user traffic in case of interception.
7. 7. The method of compliance with the. claim 3, wherein the mobile Internet foreign agent stores information about mobile terminals visiting its network and announces addresses to the attention that they are used by part of the mobile Internet protocol.
8. The method according to claim 3, wherein the access router is used to connect sites through private lines or public bearers.
9. The method according to claim 1, wherein the transfer response message further includes at least one of the following: a media access control (MAC) address of the mobile terminal, a protocol address of Home Internet, at least one meta-access router address, at least one foreign destination agent address, at least one agent advertisement, and at least one router advertisement.
10. The method according to claim 1, further comprising: receiving a request message for sending data by the transfer management module of the source network from the mobile terminal, the data request request message commands the sending of data to the transfer management module of the target network; deliver data from the transfer management module of the source network to the transfer management module of the target network; transmit the data delivered from the transfer management module of the target network to the mobile terminal.
11. 11. The method according to claim 1, wherein the Internet protocol address information includes at least one of the following: media access control (MAC) address of the mobile terminal, address Internet protocol address, target access router address, target foreign agent address, agent announcement, and router advertisement.
12. The method according to claim 1, wherein the transfer request message includes an Internet protocol address information that is a current Internet protocol address configuration.
13. 13. The method according to claim 12, wherein the current Internet protocol address configuration includes at least one of the following: media access control (MAC) address of the mobile terminal, Internet protocol address of address, address to the attention of, address of source access router, and address of foreign source agent.
14. 14. A method for communicating information in a wireless mobile communication system, the method comprising: establishing in a mobile terminal a network transfer module for converging information from the at least one network interface module associated with one of the following: homogeneous network and heterogeneous network, in a unified presentation; transmitting an inquiry message by requesting a message related to the Internet protocol address from the mobile terminal to an information server of a network; and receiving an inquiry response message including Internet protocol address information of a target network, from the network information server. The method according to claim 14, wherein the message related to Internet protocol address includes at least one of the following: media access control (MAC) address of the mobile terminal, address, protocol Internet address, address to the attention of, source access router address, and source foreign agent address. The method according to claim 14, wherein the Internet protocol address information of a target network includes at least one of the following: media access control (MAC) address of the mobile terminal, address Internet protocol address, at least one meta access router address, at least one foreign destination agent address, at least one agent advertisement, and at least one router advertisement.