JP2008227632A - Mobile communication system, anchor node, edge node, home agent, mobile communication management method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile communication management system capable of preferentially utilizing a network (NW) base movement management mechanism according to the intention of a user and an operator. <P>SOLUTION: The anchor node of the NW base movement management mechanism is provided with a terminal base BU detection part for detecting the position registration request signal of a terminal base and an NW base preferential processing part for transmitting an instruction to preferentially using the NW base movement management mechanism to a home agent (HA), the HA is provided with an NW base preferential part for executing the processing of turning the position registration request signal of the terminal base to NG according to a signal instructing the preferential use of the NW base movement management mechanism from the anchor node, and thus the optimum movement management mechanism according to the intention of a user and an operator is provided. Simultaneously, for a packet to a mobile terminal and a packet from a mobile terminal, by encapsulating processing between the HA and the anchor node, the optimum NW base movement management mechanism is utilized while keeping a global mobility function. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile communication management technique, and more particularly to a mobile communication management technique that flexibly supports both a terminal-based mobility management mechanism and a network-based mobility management mechanism.

  In recent years, an ALL-IP network (hereinafter referred to as AIPN) has attracted attention as a next-generation network. Since AIPN accommodates a wide variety of access networks, it is important to provide a mobility function for seamless communication between the networks.

  As means for providing a mobility function, there are a network-based mobility mechanism in which a mobility management function is installed in a network node and a terminal-based mobility mechanism in which a mobility management function is installed in a mobile terminal. Typical examples of the network-based mobility mechanism include NETLMMM (Network-based Local Mobility Management) and P-MIP (Proxy Mobile IP). A typical example of a terminal-based mobility mechanism is C-MIP (Client Mobile IP).

  When configuring a flexible mobile communication management system, it is necessary to support both the terminal-based mobility mechanism and the network-based mobility mechanism described above on the network side and the terminal side.

  A conventional technique that supports both the terminal-based mobility mechanism and the network-based mobility mechanism on the network side will be described below (for example, Non-Patent Document 1).

  FIG. 3 is a configuration diagram of a conventional mobile communication management system, and FIG. 4 is an operation sequence of the conventional mobile communication management system.

  In the terminal-based mobility management mechanism, when the mobile terminal 1 is connected to the network 5, a location registration request signal is transmitted to the home agent 3. Upon receiving the location registration request signal from the mobile terminal 1, the home agent 3 forms and manages binding information such as an IP address and a home address on the access network of the mobile terminal 1, and sends a location registration response signal to the mobile terminal 1. Reply. When the mobile terminal 1 receives the location registration response signal, the mobile terminal 1 understands that the location registration process described above has been successfully completed.

  Thereafter, between the home agent 3 and the mobile terminal 1, there is a user data tunnel for encapsulating and transferring packets addressed to the home address of the mobile terminal 1 into packets addressed to the IP address on the access network of the mobile terminal 1. The user data transmission / reception processing addressed to the mobile terminal 1 is moved and managed. Note that the reverse decapsulation process is similarly performed for the packet in the reverse direction.

  In the above-described terminal-based mobility management mechanism, user data is encapsulated in the wireless section, resulting in an associated data overhead, which is an inefficient packet delivery method, and every time the network connection point is changed. It is absolutely necessary to perform location registration processing.

  On the other hand, in the network-based mobility management mechanism, when the mobile terminal 1 connects to the network 5, the network edge node 2 detects the connection of the mobile terminal 1 and transmits a location registration request signal to the mobility anchor node 4. Upon receiving the location registration request signal, the mobility anchor node 4 forms and manages binding information such as the IP address of the mobile terminal 1 and the IP address of the edge node 2 and returns a location registration response signal to the edge node 2. .

  Thereafter, a user data tunnel is formed between the mobility anchor node 4 and the edge node 2 to deliver a packet addressed to the mobile terminal 1 address to the corresponding edge node 2. The transmission / reception process is moved and managed. The mobile terminal 1 is subject to mobility management without being particularly aware of the location registration processing on the network 5 side. On the other hand, when the location registration processing on the network 5 side is not performed, the mobile terminal 1 performs normal IP communication. Works as. Similarly, packets in the reverse direction are encapsulated at the edge node.

  User data encapsulation is not required between the mobile terminal 1 and the edge node 2, and data overhead associated with the encapsulation does not occur in the radio section. In addition, regarding the movement of the terminal within the domain of the network-based mobility management mechanism, the location registration signal on the radio section is not generated, the radio transmission path can be used efficiently, and high-speed handover is possible. Possesses features.

  In order to realize a general-purpose mobility management system, it is necessary to support both the terminal-based mobility management mechanism and the network-based mobility management mechanism. In an environment that supports both mobility management mechanisms, when the terminal 1 is connected to the network 5 on the network 5 side, if a terminal-based location registration request signal is transmitted from the terminal 1, the terminal 1 The mobility management mechanism is used. Further, when an address resolution request (such as DHCP) signal is transmitted from the terminal 1, it is determined that the terminal 1 has the ability to use the terminal-based mobility management mechanism.

On the other hand, on the terminal side, first, a terminal-based location registration request signal is transmitted so that the network side can cope with which one is supported. If there is a location registration response, a terminal-based mobility management mechanism is used, and if there is no response, a network-based mobility management mechanism is used.
WiMAX Forum, “WiMAX End-to-End Network Systems Architecture”, 7.8.1.13 Coexistence for Networks Supporting Bolt CMIP and PMIP

  However, in the system configuration described above, the mobile terminal uses the terminal-based mobility management mechanism based on the availability result because the terminal cannot detect whether the network-based mobility management mechanism can be processed. Determine the mobility management mechanism.

  Therefore, even when the terminal and the network are in an environment where both mobility management mechanisms can be used, the terminal-based mobility management mechanism is preferentially used regardless of the intention of the user or the network operator. There is a problem that the mobility management mechanism cannot be used preferentially.

  Therefore, the present invention prioritizes the network-based mobility management mechanism while continuing to use the terminal-based global mobility function when both the terminal and the network support the terminal-based and network-based mobility management mechanism. An object of the present invention is to provide a mobile communication management system that can be used for a flexible configuration.

  The present invention for solving the above problem is a mobile communication system, a mobile terminal, a home agent that manages to forward a packet addressed to the mobile terminal to the mobile terminal, An anchor node that manages to forward the packet to the edge node to which the mobile terminal is connected, and the home agent sends the packet addressed to the mobile terminal according to preset priority information. It is managed to forward to the mobile terminal, or the anchor node manages to forward a packet addressed to the mobile terminal to an edge node to which the mobile terminal is connected.

  The present invention for solving the above-mentioned problems is an anchor node, a detection unit for detecting a location registration request signal transmitted to the home agent in order to request management at the home agent by the mobile terminal, and priority information If priority is given to management at the anchor node, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal and transmitted to the home agent. And an anchor node having a priority processing unit configured to transfer a packet addressed to the mobile terminal to an edge node to which the mobile terminal is connected.

  The present invention for solving the above-mentioned problems is an edge node, and a detection unit for detecting a location registration request signal transmitted to the home agent in order to request management by a home agent by a mobile terminal, and priority information If priority is given to management at the anchor node, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal and transmitted to the home agent. A priority processing unit configured to set the anchor node to forward the packet addressed to the mobile terminal to the own device.

  The present invention for solving the above-mentioned problems is a home agent, wherein the anchor node prioritizes management so that a packet addressed to a mobile terminal is forwarded to an edge node to which the mobile terminal is connected. When receiving the request information and the location registration request signal sent by the mobile terminal to the home agent in order to request that the home agent manage to forward the packet addressed to the mobile terminal to the mobile terminal, the home agent A priority processing unit that transmits to the mobile terminal a response signal indicating that management in the mobile terminal is not performed, and after the priority processing unit transmits the response signal to the mobile terminal, the packet addressed to the home address of the mobile terminal is encapsulated. And an encapsulation processing unit that transfers the data to the anchor node.

  In order to solve the above problems, the present invention provides a mobile terminal, a home agent that manages to forward the packet addressed to the mobile terminal to the mobile terminal, and the mobile terminal connects the packet addressed to the mobile terminal A mobile communication management method for a mobile communication system having an anchor node that is managed to forward to an edge node that has been set, wherein preset priority information is a packet that the home agent is addressed to the mobile terminal. A home agent transfer step of transferring a packet addressed to the mobile terminal to the mobile terminal, and the priority information includes a packet addressed to the mobile terminal by the anchor node. When the mobile terminal is set to forward to the edge node to which the mobile terminal is connected, the packet addressed to the mobile terminal End is characterized by having a anchor node transfer step of transferring to the edge node connected.

  The present invention for solving the above-described problem is a program of an anchor node, wherein the program transmits the anchor node to the home agent so that a mobile terminal requests management at the home agent. Priority request information indicating that priority is given to management at the anchor node to the detected location registration request signal when priority is given to management at the anchor node in the detection information for detecting the signal and priority information Is transmitted to the home agent, and the anchor node functions as a priority processing unit configured to forward the packet addressed to the mobile terminal to the edge node to which the mobile terminal is connected.

  The present invention for solving the above-mentioned problem is an edge node program, which is a location registration request transmitted to the home agent by the mobile terminal to request management by the home agent. Priority request information indicating that priority is given to management at the anchor node to the detected location registration request signal when priority is given to management at the anchor node in the detection information for detecting the signal and priority information Is added to the home agent, and the anchor node functions as a priority processing unit configured to forward the packet addressed to the mobile terminal to the own device.

  The present invention for solving the above problem is a home agent program, wherein the program forwards the home agent to an edge node to which an anchor node is connected to a mobile terminal. Priority request information indicating that management is prioritized and the mobile terminal transmitted to the home agent in order to request that the home agent manage to forward packets addressed to the mobile terminal to the mobile terminal Upon receiving the location registration request signal, a priority processing unit that transmits a response signal indicating that management by a home agent is not performed to the mobile terminal, and after the priority processing unit transmits the response signal to the mobile terminal, Encapsulation processing unit for encapsulating a packet addressed to a home address of a mobile terminal and transferring the packet to the anchor node It characterized thereby to function.

  The anchor node according to the present invention detects a location registration request signal in a terminal-based mobility management mechanism from a mobile terminal in addition to an NW-based mobility management unit that manages binding information for NW-based mobility management of the mobile terminal. A terminal-based BU detection unit, an NW-based priority processing unit for notifying the home agent that the NW-based mobility management mechanism has priority when the NW-based, terminal-based, and both mobility management mechanisms are supported, and NW-based mobility Even when the management mechanism is prioritized, a home agent for continuously supporting the global mobility function of the terminal-based mobility management mechanism and an encapsulation processing unit that manages tunnel generation processing between the anchor nodes are provided.

  The home agent according to the present invention receives a request signal for preferential use of an NW-based mobility management mechanism from an anchor node in addition to a terminal-based mobility management unit that manages binding information for terminal-based mobility management of a mobile terminal. An NW base priority processing unit that returns a terminal-based location registration request signal in NG, and a home for continuously supporting the global mobility function of the terminal-based mobility management mechanism even when priority is given to the NW-based mobility management mechanism An encapsulation processing unit that manages tunnel generation processing between the agent and the anchor node.

  The edge node according to the present invention is an access router having an edge function of a network-based mobility management mechanism, and when a mobile terminal uses a terminal-based mobility management mechanism, it operates as an access router that simply forwards packets. To do.

  The mobile terminal according to the present invention is a mobile terminal that can communicate using the IP protocol and is mobile. In addition, it has a mobile IP client function and a location registration transmission / reception function to the home agent, and it is also possible to use the mobility management function within the network-based mobility management mechanism domain. It is a dual stack terminal that can use the mechanism.

  According to the present invention, a network-based mobility management mechanism or a terminal-based mobility management mechanism can be used according to the intention of the user or network operator. A more flexible mobile communication management system can be designed.

  Furthermore, according to the present invention, a network-based mobility management mechanism can be used preferentially. Accordingly, the processing load on the terminal and the network node is reduced, and the system resources are efficiently used.

  Furthermore, according to the present invention, it is possible to properly use the terminal-based and network-based mobility management mechanisms in the right place, and to realize an efficient and high-speed handover processing system.

  The present invention manages a home agent that manages to forward a packet addressed to a mobile terminal to the mobile terminal, and manages to forward a packet addressed to the mobile terminal to an edge node to which the mobile terminal is connected. In a mobile communication system having an anchor node, a home agent manages so that a packet addressed to a mobile terminal is forwarded to the mobile terminal, or the anchor node connects a packet addressed to the mobile terminal. It is possible to arbitrarily select management to transfer to a certain edge node.

  In order to explain the features of the present invention, it will be specifically described below with reference to the drawings.

  A first embodiment for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a first embodiment of a mobile communication management system configuration according to the present invention.

  As shown in FIG. 1, the mobile terminal communication management system has a core network 5 formed by a mobile terminal 1, an edge node 2, a home agent 3, an anchor node 4, and a gateway 6.

  The mobile terminal 1 communicates with a communication partner 7 existing on the Internet 8 via a gateway 6 in the core network 5.

  The home agent 3 includes a terminal base mobility management unit 3-1, an NW base priority processing unit 3-2, and an encapsulation processing unit 3-3.

  The terminal-based mobility management unit 3-1 receives a location registration request signal for processing a terminal-based mobility management function, manages binding information of the mobile terminal, and returns a location registration response signal.

  The NW base priority processing unit 3-2 manages a process of returning a location registration signal (NG) in accordance with the NW base movement management priority request signal from the anchor node 4.

  When the NW-based mobility management mechanism is preferentially used, the encapsulation processing unit 3-3 continuously enables the global mobility function of the terminal-based mobility management mechanism even if the terminal-based mobility management mechanism is turned off. Therefore, an encapsulation process is performed between the home agent 3 and the anchor node 4.

  The anchor node 4 includes an NW base mobility management unit 4-1, an NW base priority processing unit 4-2, a terminal base BU (Binding Update) detection unit 4-3, and an encapsulation processing unit 4-4.

  The NW base mobility management unit 4-1 receives the location registration request signal from the edge node 2, manages the binding information of the mobile terminal, and returns the location registration response signal to the edge node.

  The terminal base BU detection unit 4-3 has priority information in which whether or not the NW base mobility management mechanism is preferentially used is set for each mobile terminal (home address). Then, the terminal base BU detection unit 4-3 detects the terminal base location registration request signal, and based on the home address and priority information included in the terminal base location registration request signal, the terminal bases the NW base mobility management mechanism. It is checked whether or not the setting of whether or not to use is preferentially made. When the terminal is set to preferentially use the NW base mobility management mechanism, the arrival of the terminal base location registration request signal is transmitted to the NW base priority processing unit 4-2.

  When the NW-based priority management unit 4-2 detects the terminal-based location registration request signal and prioritizes the NW-based mobility management mechanism, the NW-based priority management unit 4-2 gives priority to the NW-based mobility management mechanism to the location registration request signal. Processing for adding an NW-based mobility management priority request signal that is an instruction to use is performed.

  When the NW-based mobility management mechanism is enabled, the encapsulation processing unit 4-4 continuously enables the global mobility function of the terminal-based mobility management mechanism. Encapsulation processing is performed.

  Subsequently, the processing operation of the mobile communication management system of the present invention will be described using an operation sequence diagram.

  When the mobile terminal 1 is connected to the network, the IP address used by the mobile terminal 1 in the network is resolved with the edge node 2 (using DHCP: Dynamic Host Configuration Protocol or the like).

  The edge node 2 detects that the address resolution process has occurred, and detects that the mobile terminal 1 has connected to the network, and transmits an NW base location registration request signal of the mobile terminal 1 to the anchor node 4. The anchor node 4 registers the binding information of the mobile terminal 1 and returns an NW base location registration response signal to the edge node 2. As a result, a user data transfer tunnel for the mobile terminal 1 is formed between the edge node 2 and the anchor node 4.

  The mobile terminal 1 is unaware of the processing on the network side, starts terminal-based mobile communication mechanism processing, and transmits a terminal-based location registration request signal including information on its home address to the home agent 3. To do. The signal arrives at the home agent 3 via the edge node 2 and the anchor node 4. In the anchor node 3, when the terminal base BU detection unit 4-3 detects the terminal base position registration request signal, the terminal base position Based on the home address included in the registration request signal, it is checked whether or not the terminal is set to use the NW-based mobility management mechanism preferentially. When the terminal is set to preferentially use the NW base mobility management mechanism, the arrival of the terminal base location registration request signal is transmitted to the NW base priority processing unit 4-2. The NW base priority processing unit 4-2 adds an NW base mobility management priority request signal to the terminal base location registration request signal and transfers it to the home agent 3. In the NW base mobility management priority request signal, the IP address of the anchor node 4 is also notified.

Here, whether to use the NW-based mobility management mechanism preferentially is determined by the following settings. Note that the priority information is held by the terminal base BU detection unit.
1. Fixed by the operator.
In this case, for each mobile terminal (home address), the operator sets binding information indicating which mobility mechanism has priority.
2. The operator selects and sets according to the usage status of all users in the core network, the operation load status of the related nodes, and the resource consumption status.
In this case, the operator accesses each terminal according to the usage status of the entire system such as the usage status of the user (for example, usage status of each mechanism) and the load status of each node (for example, anchor node, home agent). 2. When appropriate, assign the most appropriate mechanism. Set up by negotiating in advance between user and operator,
Before the user starts using (for example, before transmitting a location registration request signal), a signal for negotiating which to prioritize is exchanged and set.
4). Each time the user transmits a location registration request signal, the information is set by adding information to the signal.

  In this case, the user periodically transmits a location registration request signal using the mobile terminal. If it is desired to switch the priority mechanism at that time, the core network side is instructed and set by the location registration request signal.

  When the home agent 3 receives the terminal base location registration request signal and the NW base mobility management priority request signal, the NW base priority processing unit 3-2 sends an NW base mobility management mechanism to the terminal base mobility management unit 3-1. Is sent, and an instruction signal is sent to give priority to the terminal-based mobility management mechanism. The terminal base movement management unit returns a terminal base location registration response signal as NG to the mobile terminal 1. In addition, the NW base priority processing unit 3-2 registers the encapsulation management information for encapsulating the packet addressed to the home address of the mobile terminal 1 as the packet addressed to the anchor node 4 with respect to the encapsulation processing unit 3-3. Simultaneously with the instruction, an NW mobility management priority response signal is returned to the anchor node 4. In the NW mobility management priority response signal, the IP address of the home agent 3 is also notified.

  When the anchor node 4 receives the NW mobility management priority response signal, the NW base priority processing unit 4-2 sends the packet transmitted from the mobile terminal 1 to the home agent 3 to the encapsulation processing unit 4-4. Instructs registration of encapsulation management information to be encapsulated as a packet. Here, a tunnel for the packet addressed to the mobile terminal 1 between the home agent 3 and the anchor node 4 is established, and subsequent communication data related to the mobile terminal 1 is encapsulated and communicated between the home agent 3 and the anchor node 4.

  When the mobile terminal 1 receives the NG terminal-based location registration response signal, the mobile terminal 1 turns off the terminal-based mobility management mechanism and realizes a communication environment using the NW-based mobility management mechanism. However, by performing communication encapsulated between the home agent 3 and the anchor node 4, the terminal-based mobility management mechanism is turned off, but communication using the terminal-based global mobility function is possible. .

  As the second embodiment of the present invention, the NW base priority processing unit 4-2, the terminal base BU detection unit 4-3, and the encapsulation processing unit 4-4 that have been deployed in the anchor node 4 in the first embodiment. Is also possible to deploy to the edge node 2.

  As a third embodiment of the present invention, when the mobile terminal 1 performs IP address resolution, the core network 5 obtains information supporting the network-based mobility management mechanism from the edge router 2, and the mobile terminal 1 The home agent 3 is notified that the NW base mobility management mechanism is prioritized together with the transmission of the NW base mobility management priority request signal, and the mobile terminal 1 gives priority to the NW base mobility management to the anchor node 4 or the edge node 2. For transmitting a signal for requesting the implementation of the encapsulation process for the home agent 3 and the anchor node 4 or between the home agent 3 and the edge node 2 so that the global mobility function can be used continuously. Is possible.

  Each component of the system of the present invention described above can be configured by hardware as is apparent from the above description, but can also be realized by a computer program.

  Functions and operations similar to those of the above-described embodiments are realized by a processor that operates with a program stored in a program memory. Note that only a part of the functions of the above-described embodiment can be realized by a computer program.

It is a block diagram which shows the mobile communication management system structure of the 1st Example in this invention. It is a terminal registration processing sequence in the mobile communication management system of the first embodiment of the present invention. It is a block diagram which shows an example of the conventional mobile communication management system structure. It is an example of the terminal registration processing sequence in the conventional mobile communication management system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile terminal 2: Edge node 3: Home agent 3-1: Terminal base movement management part 3-2: NW base priority processing part 3-3: Encapsulation processing part 4: Anchor node 4-1: NW base movement management part 4-2: NW base priority processing unit 4-3: terminal base BU detection unit 4-4: encapsulation processing unit 5: core network 6: gateway 7: communication partner 8: Internet

Claims (14)

A mobile communication system,
A mobile terminal,
A home agent managing to forward packets addressed to the mobile terminal to the mobile terminal;
An anchor node that manages to forward packets addressed to the mobile terminal to an edge node to which the mobile terminal is connected,
The home agent manages the packet destined for the mobile terminal to be forwarded to the mobile terminal according to the preset priority information, or the anchor node connects the packet destined for the mobile terminal to the mobile terminal. A mobile communication system, characterized in that management is performed so as to forward to an edge node. The anchor node is
A detection unit for detecting a location registration request signal transmitted to the home agent in order for the mobile terminal to request management at the home agent;
When priority is given to management at the anchor node in the priority information, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal and transmitted. A priority processing unit,
The home agent
And a priority processing unit configured to transmit to the mobile terminal a response signal indicating that management by a home agent is not performed when the location registration request signal to which the priority request information is added is received. The mobile communication system according to 1. The edge node is
A detection unit for detecting a location registration request signal transmitted to the home agent in order for the mobile terminal to request management at the home agent;
When priority is given to management at the anchor node in the priority information, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal and transmitted. A priority processing unit,
The home agent
2. The apparatus according to claim 1, further comprising: a priority processing unit that transmits a response signal indicating that management by a home agent is not performed to the mobile terminal when the location registration request signal to which the priority request information is added is received. The mobile communication system according to 1.   The mobile communication system according to claim 2 or 3, wherein the home agent includes an encapsulation processing unit that encapsulates a packet addressed to a home address of the mobile terminal and transfers the packet to the anchor node. When the priority information is set to prioritize management at the anchor node,
The mobile terminal has a priority processing unit that transmits the location registration request signal with priority request information indicating that management at the anchor node is prioritized, and transmits the location registration request signal.
The home agent
2. The apparatus according to claim 1, further comprising: a priority processing unit that transmits a response signal indicating that management by a home agent is not performed to the mobile terminal when the location registration request signal to which the priority request information is added is received. The mobile communication system according to 1. An anchor node,
A detection unit for detecting a location registration request signal transmitted to the home agent in order for the mobile terminal to request management at the home agent;
If priority management is set to prioritize management at the anchor node, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal to the home agent. An anchor node comprising: a priority processing unit configured to transmit and set the anchor node to forward a packet addressed to the mobile terminal to an edge node to which the mobile terminal is connected. An edge node,
A detection unit for detecting a location registration request signal transmitted to the home agent in order for the mobile terminal to request management at the home agent;
If priority management is set to prioritize management at the anchor node, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal to the home agent. An edge node comprising: a priority processing unit configured to transmit and set the anchor node to forward a packet addressed to the mobile terminal to the own device. A home agent,
Priority request information for giving priority to managing that the anchor node forwards the packet addressed to the mobile terminal to the edge node to which the mobile terminal is connected, and the home agent sends the packet addressed to the mobile terminal to the mobile terminal. When the mobile terminal receives a location registration request signal transmitted to the home agent in order to request management to be transferred, a response signal indicating that management by the home agent is not performed is transmitted to the mobile terminal A priority processing unit to
A home agent comprising: an encapsulation processing unit that encapsulates a packet addressed to a home address of the mobile terminal after the priority processing unit transmits the response signal to the mobile terminal and forwards the packet to the anchor node. Managed to forward a mobile terminal, a home agent that manages to forward packets addressed to the mobile terminal to the mobile terminal, and an edge node to which the mobile terminal is connected. A mobile communication management method for a mobile communication system having an anchor node,
If the priority information set in advance is set so that the home agent transfers a packet addressed to the mobile terminal to the mobile terminal, the home agent transfers the packet addressed to the mobile terminal to the mobile terminal. A transfer step;
When the priority information is set so that the anchor node forwards the packet addressed to the mobile terminal to the edge node to which the mobile terminal is connected, the mobile terminal connects the packet addressed to the mobile terminal. And an anchor node transfer step of transferring to an edge node that is performing the mobile communication management method. A detection step of detecting a location registration request signal transmitted to the home agent for the mobile terminal to request management at the home agent;
When priority is given to management at the anchor node in the priority information, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal and transmitted. A priority request information transmission step;
And a response signal transmitting step of transmitting to the mobile terminal a response signal indicating that management by a home agent is not performed when the location registration request signal to which the priority request information is added is received. Item 10. The mobile communication management method according to Item 9.   The mobile communication management method according to claim 10, further comprising a transfer step of encapsulating a packet addressed to a home address of the mobile terminal and transferring the packet to the anchor node after transmitting the response signal. An anchor node program, wherein the program
A detection unit for detecting a location registration request signal transmitted to the home agent in order for the mobile terminal to request management at the home agent;
If priority management is set to prioritize management at the anchor node, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal to the home agent. A program characterized by being transmitted, and causing an anchor node to function as a priority processing unit configured to forward a packet addressed to the mobile terminal to an edge node to which the mobile terminal is connected. An edge node program, the program comprising:
A detection unit for detecting a location registration request signal transmitted to the home agent in order for the mobile terminal to request management at the home agent;
If priority management is set to prioritize management at the anchor node, priority request information indicating that management at the anchor node is prioritized is added to the detected location registration request signal to the home agent. A program for transmitting, and causing an anchor node to function as a priority processing unit configured to forward a packet addressed to the mobile terminal to the own device. A program of a home agent, wherein the program
Priority request information for giving priority to managing that the anchor node forwards the packet addressed to the mobile terminal to the edge node to which the mobile terminal is connected, and the home agent sends the packet addressed to the mobile terminal to the mobile terminal. When the mobile terminal receives a location registration request signal transmitted to the home agent in order to request management to be transferred, a response signal indicating that management by the home agent is not performed is transmitted to the mobile terminal A priority processing unit to
The priority processing unit functions as an encapsulation processing unit that encapsulates a packet addressed to a home address of the mobile terminal after transmitting the response signal to the mobile terminal and forwards the packet to the anchor node.

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