KR100714036B1 - Network connection service method for path distributing in mobile network - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a differentiated network connection service method through the distribution of communication paths in a mobile network, and to a computer readable recording medium storing a program for realizing the method.

2. The technical problem to be solved by the invention

The present invention distributes communication paths using a multi-homing technology to a network formed by portable Internet terminals moving to a group, that is, a mobile network that manages mobility on a network basis. To provide a differentiated network connection service method capable of providing differentiated communication connection service to nodes (mobile terminals (MN)) in a network and a computer-readable recording medium having recorded thereon a program for realizing the method. For that purpose.

3. Summary of Solution to Invention

The present invention provides a network connection service method in a group mobile Internet service system, wherein each of at least two different connection routers on a network (visit network) visited by the mobile network is configured to route connection service characteristic information together with different prefix information. Transmitting the announcement message (access router announcement message) to the mobile router (MR); The mobile router (MR) extracting different connection service characteristic information from router announcement messages (access router announcement messages) of the at least two different access routers; The mobile router (MR) setting different temporary addresses (CoA) from the access router announcement message; The mobile router (MR) mapping the different temporary addresses to a mobile network prefix (MNP) to announce through a downlink interface; The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile on the mobile network Registering different network connections for each group of mobile terminals (MNs) identified by a network prefix (MNP); And providing, by the home agent (HA), a network connection service (internet access service) that varies a communication path for each mobile network prefix (MNP) on the mobile network based on the registered information.

4. Important uses of the invention

The present invention is used for differentiating an Internet service for nodes in a mobile network when providing an Internet connection service to a mobile network moving on a network basis.

Mobile network, multihoming, mobile router, temporary address (CoA), prefix

Description

Network connection service method for path distributing in mobile network}

1 is a structural diagram of a group mobile Internet service network when a mobile network including a mobile router to which the present invention is applied is located in a home network;

2 is a configuration diagram of a mobile router to which the present invention is applied;

3 is a diagram illustrating an embodiment of a differentiated network connection service method through distribution of communication paths in a mobile network according to the present invention.

* Explanation of symbols on the main parts of the drawing

11 to 13: mobile terminal (MN) 14,15: mobile router (MR)

16: Home Agent (HA) 17: Binding Cache

18: Internet 19: Mobile Network

21: Ingress Interface of Mobile Router

22: Egress Interface of Mobile Router

31,32: router to visit the network

The present invention relates to a differentiated network connection service method through distribution of communication paths in a mobile network, and to a computer readable recording medium recording a program for realizing the method. The mobile network (MN: Mobile Node) in the mobile network by distributing communication paths using a multi-homing technology to a network formed by the network, that is, a mobile network managing mobility on a network basis. The present invention relates to a differentiated network connection service method capable of providing a differential communication connection service to a computer, and a computer readable recording medium storing a program for realizing the method.

First, terms used in the present invention are defined as follows.

Home address (HoA) is an address used to uniquely distinguish each mobile station (MN) or mobile router (MR) in Mobile Internet Protocol (Mobile IP).

The care of address (CoA) is an address that contains location information of a mobile terminal (MN) or a mobile router (MR) in a mobile internet protocol (Mobile IP).

Prefix is the prefix advertised by the access router.

Mobile Network Prefix (MNP) is a prefix advertised by a mobile router (MR).

Currently, the Internet we are using is designed based on the use in a fixed location, utilizing the Transmission Control Protocol / Internet Protocol (TCP / IP).

However, due to the gradual development of mobile technology, Internet users were not only able to use the Internet in a fixed place, but also wanted to be freely provided with services as they are. Therefore, to meet the needs of these users, the Internet Engineering Task Force (IETF) created a working group for mobile IP and standardized efforts on it. As a result, mobile IP in IPv4 and IPv6 was established. The draft standard is virtually finalized.

In the mobile IPv4 / IPv6 protocol defined by IETF's RFCs 3344 and 3775, location information that changes as the portable Internet terminal (mobile terminal (MN)) moves is registered in the home agent (HA), so that the corresponding terminal (CN) is mobile. When establishing communication with (MN), if the home agent (HA) is first connected, the home agent (HA) forwards the communication packet to the current location of the mobile terminal (MN).

However, mobile IP works well when moving individual user terminals, but has various problems when a subnet including several user terminals moves at once. In other words, when using the portable Internet, users are expected to want to access the wireless Internet while traveling by means of transportation such as buses, subways, and cars. In such a situation, when each user communicates using mobile IP, each user moves when one means of transportation such as a subway, which is carried by multiple users, moves from one cell to another cell. The problem arises that all of them must register location information.

Thus, a discussion on 'Network Mobility (NEMO)', which supports the movement of subnets based on the IPv6 version of Mobile IP, resulted in the formation of a working group at the IETF. The standard was virtually finalized.

The NEMO basic support protocol (NEMO) proposed by IETF's RFC 3963 introduces a mobile router concept called Mobile Router (MR). The entire network is regarded as moving, and the location information is updated to the home agent HA corresponding to only the mobile router MR.

In the Network Mobility Basic Support protocol defined in IETF's RFC 3963, a mobile router (MR) manages the mobility of the entire network.

The mobile router (MR) separates the address setting of the upstream interface and the ingress interface. That is, an uplink interface connecting to the Internet dynamically sets a care-of address (CoA) in a network visited while moving. In addition, the downlink interface with nodes (mobile terminal (MN)) in the mobile network allows the mobile terminal (MN) to maintain the IP address statically independently of the movement.

The mobile router MR notifies the home agent HA by updating the binding of the home address HoA and the CoA and the downlink prefix of the upstream interface. Therefore, nodes in the mobile network (mobile terminals (MNs)) having the same prefix as the downlink interface are supported for mobility management by prefix binding update.

A tunnel is established and communicated between the home agent HA of the mobile router MR and the mobile router MR. That is, nodes (mobile terminals MN) of all mobile networks transmit and receive packets through a tunnel between the home agent HA of the mobile router MR and the mobile router MR.

As described above, mobile networks have been developed to provide mobility in a moving space such as a vehicle.

However, a mobile network installed in a vehicle or the like must provide not only an Internet connection for a vehicle occupant but also communication for various control devices in the vehicle. At this time, since the vehicle occupant network and the vehicle controller network for different purposes exist in the same space (that is, they exist in the same mobile network physically), the risk of network security attack on the in-vehicle controller network increases.

Therefore, in the case of providing an Internet connection service to a mobile network moving in a network unit, a method for providing a differentiated communication connection service (Internet service differentiation) for each node (mobile terminal (MN)) in the mobile network. This is desperately required.

SUMMARY OF THE INVENTION The present invention has been proposed to meet the above demands, and is a multi-homing technique for a network formed by portable Internet terminals moving to a group, that is, a mobile network that manages mobility on a network basis. It is possible to provide a differentiated communication connection service for nodes (mobile terminals (MNs)) in a mobile network by distributing communication paths by using a network, and to record a differentiated network connection service method and a program for realizing the method. Its purpose is to provide a computer readable recording medium.

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

In accordance with another aspect of the present invention, there is provided a network connection service method in a group mobile Internet service system, wherein each of at least two different access routers on a network (visit network) visited by the mobile network is connected with different prefix information. Transmitting connection service characteristic information to a router announcement message (access router announcement message) to a mobile router (MR); The mobile router (MR) extracting different connection service characteristic information from router announcement messages (access router announcement messages) of the at least two different access routers; The mobile router (MR) setting different temporary addresses (CoA) from the access router announcement message; The mobile router (MR) mapping the different temporary addresses to a mobile network prefix (MNP) to announce through a downlink interface; The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile on the mobile network Registering different network connections for each group of mobile terminals (MNs) identified by a network prefix (MNP); And providing, by the home agent (HA), a network connection service (internet access service) that varies a communication path for each mobile network prefix (MNP) on the mobile network based on the registered information. It is done.

In addition, the present invention relates to a network connection service method in a group mobile Internet service system, in which at least two different access routers have access service characteristic information together with different prefix information on a network (visit network) visited by the mobile network. Transmitting a router announcement message (access router announcement message) to a mobile router (MR) on the mobile network; The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile network on the mobile network Registering different network connections for each group of mobile terminals (MNs) identified by the prefix (MNP); And a network connection service (internet access service) in which the home agent (HA) varies a communication path for each group of mobile terminals (MNs) separated by a mobile network prefix (MNP) on the mobile network based on the registered information. It characterized in that it comprises a step of providing.

In addition, the present invention provides a network connection service method in a group mobile Internet service system, wherein connection service characteristic information is loaded along with different prefix information from at least two different connection routers on a network (visit network) visited by the mobile network. Receiving, by the mobile router (MR) on the mobile network, at least two different temporary addresses (CoAs) assigned to the upstream interface based on the different prefix information in the visited network; The mobile router (MR) mapping different temporary addresses (CoA) of the uplink interface to different mobile network prefixes (MNP) of the downlink interface; The mobile router (MR) transmits the temporary address (CoA) corresponding to the access service characteristic information and the mobile network prefix (MNP) in a binding update message through the uplink interface, and transmits the same to the home agent HA. And registering the network connection differently for each group of mobile terminals (MNs) identified by the mobile network prefix (MNP) on the mobile network.

In addition, the present invention provides a network connection service method in a group mobile Internet service system, comprising: a router announcement in which connection service characteristic information is loaded with different prefix information from at least two connection routers on a network (visit network) visited by the mobile network; When a message (access router announcement message) is received, a mobile router (MR) on the mobile network announces a multiple mobile network prefix (MNP) via a downlink interface; Receiving, by the mobile router (MR), at least two different temporary addresses (CoA) from the visited network based on the different prefix information; The mobile router (MR) extracting the access service characteristic information from the access router announcement message; The mobile router (MR) has a temporary address (CoA) set to connect to a predetermined access router based on the access service characteristic information, and a prefix (MNP) of the mobile network to receive the access service characteristic of the predetermined access router. Matching); And extracting characteristic information of the mobile network prefix (MNP) by each mobile terminal (MN) and setting an address using a mobile network prefix (MNP) providing a desired characteristic.

On the other hand, the present invention, in the group mobile Internet service system having a processor for differentiated network connection service through the distribution of communication paths, each of at least two different access routers on the network (visit network) visited by the mobile network A function of transmitting connection service characteristic information together with different prefix information in a router announcement message (access router announcement message) and transmitting the same to the mobile router MR; The mobile router (MR) extracts different connection service characteristic information from router announcement messages (access router announcement messages) of the at least two different access routers; The mobile router (MR) setting different temporary addresses (CoA) from the access router announcement message; The mobile router (MR) mapping the different temporary addresses to a mobile network prefix (MNP) to announce through a downlink interface; The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile on the mobile network Registering a network connection for each group of mobile terminals (MNs) identified by a network prefix (MNP); And a program for realizing a function of the home agent (HA) to provide a network connection service (internet access service) that varies a communication path for each mobile network prefix (MNP) on the mobile network based on the registered information. Provide a computer-readable recording medium for recording.

In addition, the present invention, in the group mobile Internet service system having a processor for differentiated network connection service through the distribution of communication paths, at least two different access routers each on a network (visit network) visited by the mobile network A function of transmitting connection service characteristic information together with the different prefix information in a router announcement message (access router announcement message) and transmitting the same to the mobile router MR on the mobile network; The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile network on the mobile network Registering a network connection differently for each group of mobile terminals (MNs) identified by a prefix (MNP); And a network connection service (internet access service) in which the home agent (HA) varies a communication path for each group of mobile terminals (MNs) separated by a mobile network prefix (MNP) on the mobile network based on the registered information. Provided is a computer readable recording medium having recorded thereon a program for realizing a function of providing a.

In addition, the present invention provides a group mobile Internet service system having a processor for differentiated network connection service through distribution of communication paths from at least two different access routers on a network (visit network) visited by the mobile network. When an access router announcement message including access service characteristic information is received along with other prefix information, the mobile router (MR) on the mobile network may be configured to include at least two temporary ad hoc interfaces on the upstream interface based on the different prefix information on the visited network. A function of assigning an address CoA; The mobile router (MR) mapping different temporary addresses (CoA) of the uplink interface to different mobile network prefixes (MNP) of the downlink interface; The mobile router (MR) transmits the temporary address (CoA) corresponding to the access service characteristic information and the mobile network prefix (MNP) in a binding update message through the uplink interface, and transmits the same to the home agent HA. Provided is a computer-readable recording medium having recorded thereon a program for realizing a function of differently registering a network connection for each group of mobile terminals (MNs) identified by a mobile network prefix (MNP) on the mobile network.

In addition, the present invention provides a group mobile Internet service system having a processor for differentiating network connection services through distribution of communication paths, and different prefixes from at least two access routers on a network (visit network) visited by the mobile network. A function of the mobile router (MR) on the mobile network to announce a multi-mobile network prefix (MNP) via a downlink interface when a router announcement message (access router announcement message) carrying access service characteristic information together with the information is received; A function in which the mobile router (MR) is assigned at least two different temporary addresses (CoA) in the visited network based on the different prefix information; A function of the mobile router (MR) extracting the access service characteristic information from the access router announcement message; The mobile router (MR) has a temporary address (CoA) set to connect to a predetermined access router based on the access service characteristic information, and a prefix (MNP) of the mobile network to receive the access service characteristic of the predetermined access router. A function of matching); And a program for each mobile terminal (MN) extracting the characteristic information of the mobile network prefix (MNP) and realizing a function of setting an address using the mobile network prefix (MNP) providing a desired characteristic. Provide a readable recording medium.

The present invention provides a differentiated Internet connection service for each node (mobile terminal (MN)) in the mobile network through separation of communication paths when operating a multihoming technology for a mobile network service moving by a network unit. I would like to.

To this end, the present invention advertises multiple prefixes through the downlink interface of the mobile router (MR), accesses the Internet through multihoming through the upstream interface of the mobile router (MR), and multiplies the CoA in the visiting network. After setting to be assigned to, by separating the communication path of the mobile network according to the correspondence of the CoA and the prefix, it is possible to differentiate the Internet connection service for each node (mobile terminal (MN)) in the mobile network.

That is, according to the present invention, a multi-prefix is announced through a downlink interface of a mobile router (MR) that manages mobility of a mobile network, so that nodes (mobile terminals (MNs)) in the mobile network are physically identical according to the prefix (mobile network). Zones) logically different networks, and nodes (mobile terminals (MNs)) within the mobile network visit the Internet through multi-homing technology through the upstream interface of the mobile router (MR), i.e., every time they move. When multiple temporary addresses (CoA) are allocated in a network (visiting network), different network connection services can be provided to nodes (mobile terminals (MNs)) in the mobile network by matching multiple CoAs with multiple prefixes.

Therefore, according to the present invention, when providing an Internet connection service to a mobile network moving on a network basis, it is possible to provide a differentiated Internet connection service for nodes in the mobile network.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a structural diagram of a group mobile internet service network when a mobile network including a mobile router to which the present invention is applied is located in a home network.

The mobile router (MR) 15 moving together with the mobile terminals (mobile Internet terminals) 11 to 14 while connecting the Internet 18 and the mobile terminals (mobile Internet terminals) (MNs) 11 to 14 are connected. Manages the mobility of mobile terminals (mobile Internet terminals) 11-14. Therefore, the mobile terminals (mobile Internet terminals) 11 to 14 are guaranteed transparency for movement, and the mobile router (MR) 15 determines the position of the mobile network 19 of the home agent (HA) 16. By registering with the binding cache 17, the home agent (HA) 16 can send packets to the locations of all mobile terminals (mobile Internet terminals) 11-13 belonging to the mobile network 19.

The multihoming technique used in the present invention is a technique applied to a host or a network, and a service provider or a user can obtain various benefits such as error recovery, load balancing, and policy routing when a failure occurs. The NEMO Working Group has stated that the NEMO Basic Support scheme does not cover multihoming schemes, but will address future NEMO Extended Support schemes. An analysis is in progress.

A plurality of care-of addresses (CoA) registration techniques used in the present invention will be described.

According to the mobile IPv6, the mobile terminal (MN) can be assigned a plurality of CoA, but can register only one (primary) CoA to the home agent (HA).

However, if the mobile terminal (MN) can be connected to the Internet through one or more network interfaces in various aspects such as seamless mobility support, it can be more usefully used for recovery in case of failure or network load balancing.

To this end, a number of CoA registration schemes have been proposed to extend mobile IPv6 so that a mobile terminal (MN) can register one or more CoAs with its home agent (HA). In the existing mobile IPv6, when the CoA is registered with the home agent (HA), if there is no home address of the mobile terminal (MN) in the binding cache, the home address and CoA entry (Entry) are added or the mobile terminal (MN) If there is a home address, the corresponding CoA is renewed. That is, in the existing Binding Update (BU), when a new binding update comes to the home address of a mobile terminal (MN) that has already registered a CoA, the corresponding entry is updated so that multiple CoAs cannot be used at the same time. Occurs.

To solve this problem, many CoA registration schemes have defined a flag M indicating a plurality of CoAs in the binding update packet format. If the M flag is set, it indicates that a plurality of CoAs are used for its home address, and additionally, a binding unique identifier sub-option is indicated in a mobility update option field. This is included. A binding unique identifier number (BID) is transmitted through a binding update identifier suboption, and a network interface used by each CoA can be distinguished through this BID. On the other hand, when the M flag is not set, it is processed in the same manner as the existing binding update and does not register a plurality of CoAs.

Using multiple CoA registration techniques in this way, it is possible to register multiple temporary addresses (CoA) for one home address (HoA) in its home agent (HA), and load balancing or In the event of a failure, it can provide benefits such as providing a seamless connection and providing quality of service (QoS).

The mobile router (MR) 15, which is a component of the network mobility protocol for the Internet group communication service, has an egress interface 22 and an ingress interface (as shown in FIG. 2). Independent of the setting of 21).

That is, the downlink interface 21 of the mobile router (MR) 15 announces the mobile network prefix (MNP) so that the mobile terminals (mobile Internet terminals) 11 to 14 can set the address of the mobile network 19. do.

The uplink interface 22 of the mobile router (MR) 15 also sets a temporary address (CoA) at the moved location and registers it with the home agent (HA) 16 via the Internet 18.

That is, the uplink interface 22 connecting to the Internet 18 dynamically sets a temporary address CoA in a visited network (visit network). In addition, the downlink interface 21 which connects to the mobile terminals (mobile Internet terminals) 11 to 14 in the mobile network 19 is independent of the movement, and the mobile terminals (mobile Internet terminals) 11 to 14 statically assign IP addresses. To keep it.

The mobile router (MR) 15 updates the home address (HoA) of the upstream interface 22 and the binding of the CoA and the downlink interface 21 prefix every time it moves, thereby updating the home agent (HA) 16. Inform). Therefore, mobile terminals (mobile Internet terminals) 11-14 in the mobile network 19 having the same prefix as the downlink interface 21 are supported for mobility management by prefix binding update.

In particular, in the present invention, the mobile router (MR) 15 operates multiple CoAs allocated through the uplink interface 22 and prefixes advertised through the downlink interface 21 (multiple prefixes, multiple CoAs). In the mobile router (MR) 15, these correspondence information is included in the binding update message and registered in the home agent (HA) 16.

That is, the mobile router (MR) 15 advertises multiple prefixes through the downlink interface 21, accesses the Internet 18 by multihoming through the uplink interface 22, and visits the network (visiting). Network is assigned multiple CoAs. Under such a situation, the mobile router (MR) 15 transmits the CoA and the prefix (transfer) according to the connection service discrimination characteristic (the connection service characteristic information contained in the router announcement message advertised by the access router of the visiting network) in the binding update message. By registering each network prefix (MNP) in correspondence and then registering it with the home agent (HA) 16, the communication path of the mobile network 19 is logically separated (i.e., physically within one mobile network). Different mobile networks exist in a plurality), and differentiated Internet connection services are possible for the respective mobile terminals (MNs) 11 to 14 in the mobile network 19.

This process will be described in more detail with reference to FIG. 3. As described above, the prefix corresponding to the CoA according to the access service discrimination characteristic is a mobile network prefix (MNP) advertised by the mobile router (MR) 15.

The mobile router (MR) 15, which moves with the mobile terminal (MN) 11-14 while connecting the Internet 18 and the mobile terminal (MN) 11-14, is connected to the visited network (Foreign Network). It receives a Router Advertisement Message (Access Router Advertisement Message) from the routers 31 and 32, detects its movement, and sets a new CoA based on the prefix information of the Access Router Advertisement message.

That is, when the connection router 1 (31) and the connection router 2 (32) announce different prefixes, the mobile router (MR) 15 announces different prefixes (mobile network prefixes), one mobile network (19) Since a number of prefixes are announced, the mobile terminals (mobile Internet terminals) 11 to 14 belonging to the same mobile network 19 receive different prefixes and set different addresses CoA from them.

For example, in one physically existing mobile network 19, mobile terminal 1 (MN1) 11 and mobile terminal 2 (MN2) 12, which are portable Internet terminals, are connected as a passenger terminal in a vehicle. Based on the prefix of (31), it sets its own address (CoA), and the mobile terminal 3 (MN3) 13 and the mobile terminal 4 (MN4) 14 as the vehicle controller to the prefix of the access router 2 (32). By setting its own address (CoA) based on, the occupant terminals 11 and 12 and the vehicle controllers 13 and 14 form logically different mobile networks in the same space.

According to the present invention, the access service characteristic information is added to the router announcement message advertised by the access routers 31 and 32. In this case, the connection service characteristic information is a case in which networks for different uses coexist in the mobile network (that is, when there are multiple logically different mobile networks physically in one mobile network). It refers to network connection service characteristic information for mapping a service to a specific network.

Accordingly, the mobile router (MR) 15 having received the router announcement message including the connection service characteristic information associates the prefix with the CoA according to the connection service characteristic information, and associates the corresponding CoA and prefix information with the binding update message. It is loaded and registered in the home agent (HA) 16.

In this way, the mobile network service can be efficiently performed by applying the corresponding function between the CoA and the prefix to the mobile router (MR) 15.

In more detail, the mobile router (MR) 15 that manages the mobility of the mobile network 19 announces multiple prefixes through the downlink interface 21 so that the mobile terminals MN ( 11 to 14 may form logically different networks in the same physical space (mobile network area) according to the prefix, and the mobile terminals (MNs) 11 to 14 in the mobile network 19 are interfaced upwards. (22) allows multiple assignment of temporary addresses (CoA) from the visited network (visiting network) when connecting to the Internet 18 using multihoming technology, i.e. each time it moves.

Under this situation, the mobile router (MR) 15 respectively assigns the CoA and the prefix to the binding update message according to the connection service discrimination characteristic (the connection service characteristic information contained in the router announcement message announced by the access router of the visiting network). By registering in the home agent (HA) 16 after loading in correspondence, the communication paths of the mobile network 19 are logically separated (i.e., multiple logically different mobile networks exist physically in one mobile network). ), Differential Internet connection service is possible for each mobile terminal (MN) 11-14 in the mobile network 19.

For differentiated network connection services through the distribution of communication paths in the mobile network, the mobile routers (MR) 15 are connected to each other via connection routers 31 and 32 on the networks (visiting networks) visited by the mobile network 19. Router announcement message (connection router announcement message) with connection service characteristic information (network connection service characteristic information for mapping a specific connection service to a specific network when a network for different uses coexists in a mobile network) together with other prefix information. ).

As such, when each of the access routers 31 and 32 attaches different prefixes (multiple prefixes) to the router announcement message (access router announcement message), the mobile router (MR) 15 transmits the mobile router announcement message to the downlink interface ( 21 to each mobile terminal (MN) 11-14 on the mobile network 19. Accordingly, the mobile terminal 1 (MN1) 11 and the mobile terminal 2 (MN2) 12 have a temporary address (CoA) set by the mobile router (MR) 15 based on the prefix of the access router 1 (31). Set its own address based on the corresponding mobile network prefix (MNP), and mobile terminal 3 (MN3) 13 and mobile terminal 4 (MN4) 14 move based on the prefix of access router 2 32. It is possible to set its own address based on the temporary address CoA set by the router MR 15 and the corresponding mobile network prefix MNP.

Subsequently, the mobile router (MR) 15 extracts the connection service characteristic information from the router announcement message, and connects to the temporary address CoA set to connect with the access router 31 or 32 based on the connection service characteristic information. Corresponding prefix of mobile network 19 to receive connection service characteristic of router 31 or 32, and corresponding corresponding temporary address (CoA) and corresponding network prefix in binding update message, home agent (HA) Register at (15). Here, the temporary address CoA loaded in the binding update message is one of different temporary addresses CoAs generated based on different prefix information of each access router announcement message.

By doing so, the communication paths of the mobile network 19 are logically separated (i.e., multiple logically different mobile networks exist physically in one mobile network), so that each mobile terminal in the mobile network 19 Internet connection service is available for MNs 11-14.

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

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

According to the present invention as described above, when networks for different uses coexist in the mobile network, by providing a specific connection service to the specific network, there is an effect that can provide differentiated access services qualitatively.

Claims (17)

A network connection service method in a group mobile internet service system, At least two different access routers include access service characteristic information in a router announcement message (access router announcement message) along with different prefix information on a network (visit network) visited by the mobile network (MR). Transmitting); The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile network on the mobile network Registering different network connections for each group of mobile terminals (MNs) identified by the prefix (MNP); And On the basis of the registered information, a network connection service (Internet connection service) in which the home agent (HA) varies the communication path for each group of mobile terminals (MNs) identified by a mobile network prefix (MNP) on the mobile network. Steps to provide Differentiated network connection service method through the distribution of communication paths in a mobile network comprising a. The method of claim 1, The temporary address (CoA) is, Differentiation through distribution of communication paths in a mobile network, characterized in that it is one of multiple temporary addresses (CoAs) generated based on multiple prefix information of router announcement messages (access router announcement messages) of at least two different access routers. Network connection service methods. The method of claim 1, The temporary address CoA and the mobile network prefix MNP included in the binding update message are: The mobile router (MR) on the mobile network corresponds to a temporary address (CoA) set to connect with a predetermined access router and a prefix (MNP) of the mobile network to which the access service characteristic of the predetermined access router is to be provided. A differentiated network connection service method through distribution of communication paths in a mobile network. The method according to any one of claims 1 to 3, The mobile router (MR), When each of the at least two different access routers announce different prefixes in a router announcement message (access router announcement message), the characteristic information of the router announcement message (access router announcement message) of the at least two different access routers is notified. Differentiated through the distribution of communication paths in the mobile network, characterized in that transmitted to each mobile terminal (MN) on the mobile network through a downlink interface, and at least two different temporary addresses (CoA) are assigned to the visited network Network connection service method. The method of claim 4, wherein The mobile router (MR), In the mobile network, the temporary address CoA and the mobile network prefix MNP are included in the binding update message and transmitted to the home agent HA according to the access service characteristic information. Differentiated network connection service method through distribution of paths. The method of claim 5, The mobile router (MR), Extracts the access service characteristic information from a router announcement message (access router announcement message) of the at least two access routers, and sets a temporary address (CoA) configured to connect with the predetermined access router based on the access service characteristic information. And a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) on the binding update message by matching a prefix (MNP) of a mobile network to be provided with connection service characteristics of the predetermined access router. Differentiated network connection service method through the distribution of the communication path in the mobile network, characterized in that the transmission to the router. A network connection service method in a group mobile internet service system, When a connection router notification message including connection service characteristic information is received from at least two different connection routers on a network (visit network) visited by the mobile network, the mobile router (MR) on the mobile network visits the visit. Receiving at least two different temporary addresses (CoAs) assigned to an uplink interface based on the different prefix information in a network; The mobile router (MR) mapping different temporary addresses (CoA) of the uplink interface to different mobile network prefixes (MNP) of the downlink interface; And The mobile router (MR) transmits the temporary address (CoA) corresponding to the access service characteristic information and the mobile network prefix (MNP) in a binding update message through the uplink interface, and transmits the home agent (HA) to the home agent (HA). Registering different network connections for each group of mobile terminals (MNs) identified by mobile network prefixes (MNPs) on the mobile network Differentiated network connection service method through the distribution of communication paths in a mobile network comprising a. The method of claim 7, wherein The at least two different access routers transmit connection service characteristic information along with different prefix information on the visited network in a router announcement message (access router announcement message) and transmit the same to the mobile router (MR) on the mobile network. , The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), and on the mobile network Differentiated network connection service method through distribution of communication paths in a mobile network, characterized in that different network registration for each group of mobile terminals (MN) distinguished by a mobile network prefix (MNP). The method according to claim 7 or 8, The corresponding temporary address (CoA) is one of multiple temporary addresses (CoAs) generated based on multiple prefix information of router announcement messages (access router announcement messages) of the at least two different access routers. The temporary address CoA and the mobile network prefix MNP included in the binding update message may include a temporary address CoA set by the mobile router MR on the mobile network to connect with the predetermined access router. A differentiated network connection service method through distribution of communication paths in a mobile network, characterized in that it corresponds to a prefix (MNP) of a mobile network which is intended to receive access service characteristics of a predetermined access router. The method of claim 9, Comprising the binding update message, Extracts the access service characteristic information from a router announcement message (access router announcement message) of the at least two access routers, and sets a temporary address (CoA) configured to connect with the predetermined access router based on the access service characteristic information. And matching the prefix MNP of the mobile network to which the connection service characteristic of the predetermined access router is to be provided, and loading the corresponding temporary address CoA and the corresponding mobile network prefix MNP in the binding update message. A differentiated network connection service method through distribution of communication paths in a mobile network. A network connection service method in a group mobile internet service system, When a router announcement message (access router announcement message) including connection service characteristic information is received from at least two access routers on a network (visit network) visited by the mobile network, the mobile router (MR) on the mobile network Announcing multiple mobile network prefixes (MNPs) over a downlink interface; Receiving, by the mobile router (MR), at least two different temporary addresses (CoA) from the visited network based on the different prefix information; The mobile router (MR) extracting the access service characteristic information from the access router announcement message; The mobile router (MR) has a temporary address (CoA) set to connect to a predetermined access router based on the access service characteristic information, and a prefix (MNP) of the mobile network to receive the access service characteristic of the predetermined access router. Matching); And Extracting characteristic information of a mobile network prefix (MNP) by each mobile terminal (MN) and setting an address using a mobile network prefix (MNP) providing a desired characteristic Differentiated network connection service method through the distribution of communication paths in a mobile network comprising a. The method of claim 11, The corresponding temporary address CoA is one of multiple temporary addresses CoAs generated based on multiple prefix information of router announcement messages (access router announcement messages) of the at least two different access routers. Differentiated network connection service method by distributing communication path in network. A network connection service method in a group mobile internet service system, Each of at least two different access routers on a network (visit network) visited by the mobile network transmits the connection service characteristic information along with different prefix information in a router announcement message (access router announcement message) to the mobile router (MR). step; The mobile router (MR) extracting different connection service characteristic information from router announcement messages (access router announcement messages) of the at least two different access routers; The mobile router (MR) setting different temporary addresses (CoA) from the access router announcement message; The mobile router (MR) mapping the different temporary addresses to a mobile network prefix (MNP) to announce through a downlink interface; The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile on the mobile network Registering different network connections for each group of mobile terminals (MNs) identified by a network prefix (MNP); And On the basis of the registered information, the home agent (HA) to provide a network connection service (internet access service) to change the communication path for each mobile network prefix (MNP) on the mobile network Differentiated network connection service method through the distribution of communication paths in a mobile network comprising a. In the group mobile Internet service system having a processor for differentiated network connection service through distribution of communication paths, At least two different access routers include access service characteristic information in a router announcement message (access router announcement message) along with different prefix information on a network (visit network) visited by the mobile network (MR). ) The ability to send; The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile network on the mobile network Registering a network connection differently for each group of mobile terminals (MNs) identified by a prefix (MNP); And On the basis of the registered information, a network connection service (Internet connection service) in which the home agent (HA) varies the communication path for each group of mobile terminals (MNs) identified by a mobile network prefix (MNP) on the mobile network. Function to provide A computer-readable recording medium having recorded thereon a program for realizing this. In the group mobile Internet service system having a processor for differentiated network connection service through distribution of communication paths, When a connection router notification message including connection service characteristic information is received from at least two different connection routers on a network (visit network) visited by the mobile network, the mobile router (MR) on the mobile network visits the visit. Receiving at least two different temporary addresses (CoAs) assigned to an uplink interface based on the different prefix information in a network; The mobile router (MR) mapping different temporary addresses (CoA) of the uplink interface to different mobile network prefixes (MNP) of the downlink interface; And The mobile router (MR) transmits the temporary address (CoA) corresponding to the access service characteristic information and the mobile network prefix (MNP) in a binding update message through the uplink interface, and transmits the home agent (HA) to the home agent (HA). A function of differently registering a network connection for each group of mobile terminals (MNs) identified by mobile network prefixes (MNPs) on a mobile network. A computer-readable recording medium having recorded thereon a program for realizing this. In the group mobile Internet service system having a processor for differentiated network connection service through distribution of communication paths, When a router announcement message (access router announcement message) including connection service characteristic information is received from at least two access routers on a network (visit network) visited by the mobile network, the mobile router (MR) on the mobile network To announce multiple mobile network prefixes (MNPs) over the downlink interface; A function in which the mobile router (MR) is assigned at least two different temporary addresses (CoA) in the visited network based on the different prefix information; A function of the mobile router (MR) extracting the access service characteristic information from the access router announcement message; The mobile router (MR) has a temporary address (CoA) set to connect to a predetermined access router based on the access service characteristic information, and a prefix (MNP) of the mobile network to receive the access service characteristic of the predetermined access router. A function of matching); And Each mobile terminal (MN) extracts feature information of a mobile network prefix (MNP), and sets an address using a mobile network prefix (MNP) that provides desired characteristics. A computer-readable recording medium having recorded thereon a program for realizing this. In the group mobile Internet service system having a processor for differentiated network connection service through distribution of communication paths, Each of at least two different access routers on a network (visit network) visited by the mobile network transmits the connection service characteristic information along with different prefix information in a router announcement message (access router announcement message) to the mobile router (MR). function; The mobile router (MR) extracts different connection service characteristic information from router announcement messages (access router announcement messages) of the at least two different access routers; The mobile router (MR) setting different temporary addresses (CoA) from the access router announcement message; The mobile router (MR) mapping the different temporary addresses to a mobile network prefix (MNP) to announce through a downlink interface; The home agent (HA) receives a binding update message containing a corresponding temporary address (CoA) and a corresponding mobile network prefix (MNP) corresponding to the access service characteristic information from the mobile router (MR), the mobile on the mobile network Registering a network connection for each group of mobile terminals (MNs) identified by a network prefix (MNP); And On the basis of the registered information, the home agent (HA) provides a network connection service (Internet connection service) to change the communication path for each mobile network prefix (MNP) on the mobile network A computer-readable recording medium having recorded thereon a program for realizing this.

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