KR101374475B1 - Method for dynamically splitting and combining mobile networks for providing seamless internet connection service - Google Patents

Abstract

The present invention relates to a dynamic segmentation / merge method of a mobile network for seamlessly providing an internet access service. The present invention relates to a mobile terminal belonging to a segmented / merged mobile network even when the mobile network is dynamically divided / merged according to an application service scenario. The present invention aims to provide a dynamic segmentation / merging method of a mobile network for providing a seamless internet access service.

To this end, the present invention, in the dynamic segmentation method of the mobile network for seamless provision of the Internet access service, for each mobile router belonging to the same mobile network, assigned to the mobile router list for each mobile network and each mobile router A router information management step of storing and managing the prefix information and the information on the primary mobile router; A binding update step of sending, by the primary mobile router, a first binding update message to a home agent as the mobile network moves; And a splitting step of deleting, by the mobile router belonging to each divided mobile network, information on the mobile router belonging to another mobile network due to the mobile network splitting when the mobile network is divided.

Mobile Network, Network Mobility, IPv6, Mobile Network Split / Merge

Description

Dynamic segmentation / merging method for mobile networks for seamless provision of Internet access services {METHOD FOR DYNAMICALLY SPLITTING AND COMBINING MOBILE NETWORKS FOR PROVIDING SEAMLESS INTERNET CONNECTION SERVICE}

1 is a diagram illustrating a network configuration before mobile network partitioning in a group mobile Internet service network to which the present invention is applied;

2 is a diagram illustrating a network after mobile network segmentation in a group mobile Internet service network to which the present invention is applied;

3 is a flow chart of an embodiment of a dynamic segmentation method of a mobile network for seamlessly providing an Internet access service according to the present invention;

4 is a flowchart illustrating a dynamic merging method of a mobile network for seamlessly providing an internet access service according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

101 to 103: Internet terminal 110: Mobile network

121, 123: Mobile router 122, 124: Cache (cache for mobile router)

130: Internet 140: Home Agent (HA)

141: binding cache

The present invention relates to a dynamic segmentation / merge method of a mobile network for seamless provision of an Internet access service. More particularly, the mobile network is divided / merged according to an application service scenario. The present invention relates to a dynamic segmentation / merging method of a mobile network for providing a seamless internet access service to mobile terminals belonging to.

The mobile network is a structure that moves by network unit, and integrates and manages movement of mobile nodes connected to the mobile router. It is wirelessly connected to the Internet via a mobile router in a mobile network, and all communication is through a mobile router.

Today, IP network mobility service using the mobility of the network is applied to various fields, and the specific appearance of the application service is very diverse. In particular, depending on the application service, there is a need to divide one mobile network into two or more mobile networks. For example, when a moving military network is separated by operation, or when a train splits into two at the junction and leaves for different destinations.

Meanwhile, depending on the application service, there is a need for merging (combining) two or more mobile networks.

As described above, in the case where the mobile network is divided / merged, how can each mobile terminal (Internet terminal) belonging to the mobile network be maintained or provided without interruption? It is an important task.

However, in the conventional network mobility protocol, since the mobile network is divided into two or more mobile networks, or when two or more mobile networks are merged into one mobile network, no consideration is made. There is a problem that can not effectively provide a variety of application services that require a merge.

The present invention has been proposed to solve the above problems, and even if the mobile network is dynamically divided / merged according to the application service scenario, it is possible to provide a seamless Internet access service to mobile terminals belonging to the split / merged mobile network. An object of the present invention is to provide a dynamic segmentation / merge method of a mobile network for seamlessly providing an Internet access service.

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. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

The present invention for achieving the above object is a dynamic segmentation method of a mobile network for seamless provision of an Internet access service, for each mobile router belonging to the same mobile network, the mobile router list for each mobile network and each mobile A router information management step of storing and managing prefix information allocated to the router and information on a primary mobile router; A binding update step of sending, by the primary mobile router, a first binding update message to a home agent as the mobile network moves; And a splitting step of deleting, by the mobile router belonging to each divided mobile network, information on the mobile router belonging to another mobile network due to the mobile network splitting when the mobile network is divided. The dividing method of the present invention includes reselecting a primary mobile router when there are a plurality of mobile routers belonging to the mobile network divided in the dividing step, and storing the information of the reselected primary mobile router by each mobile router; And sending, by the reselected primary mobile router, a second binding update message to the home agent as the divided mobile network moves.

Meanwhile, the present invention provides a method for dynamically merging mobile networks for seamlessly providing Internet access services, wherein each mobile router belonging to the same mobile network is assigned to a mobile router list for each mobile network and assigned to each mobile router. A router information management step of storing and managing prefix information and information on a primary mobile router; A merging step of adding a list and prefix information for mobile routers belonging to the other mobile network before merging, for each mobile router belonging to the merged mobile network when a plurality of mobile networks are merged; And re-selecting a primary mobile router in the merged mobile network and transmitting a binding update message to a home agent through the reselected primary mobile router.

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The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a network configuration before mobile network division in a group mobile Internet service network to which the present invention is applied, and shows the structure and location of a mobile router and an Internet terminal forming a mobile network in an Internet service network.

First, the present invention will be described overall, the present invention is to manage mobility in one mobile network, that is, a network unit consisting of mobile terminals connected to the Internet and mobile routers connecting them to the Internet Even if one mobile network is divided into two or more mobile networks according to application service scenario types, mobile network nodes (Internet terminals) belonging to each divided mobile network can maintain an Internet connection. That is, even if one mobile network is divided into a plurality of mobile networks, mobile network nodes (internet terminals) can continue to be provided with an Internet access service.

Hereinafter, referring to FIG. 1, a processing procedure performed by the mobile router system for seamlessly providing an Internet access service will be described before the mobile network is 'splunged'.

Mobile Routers (MR) 121 and 123, which move together with the Internet terminals 101 to 103 while connecting the Internet 130 and the Internet terminals 101 to 103, are one mobile network. And manage mobility of the connected Internet terminals. Here, the Internet terminals 101 to 103 are terminals for accessing the Internet through a mobile network, which may be called various names such as a mobile terminal and a mobile network node.

Mobile router 1 121 and mobile router 2 123 are individually assigned a prefix (mobile network prefix). Here, the prefix means a set of leading high bits corresponding to the network ID in the IP address, which may be allocated through a Dynamic Host Configuration Protocol (DHCP) server or a Home Agent (HA). .

 Each mobile router belonging to the same mobile network (corresponding to mobile router 1 121 and mobile router 2 123 in FIG. 1) has a list and prefix information (mobile for each mobile router belonging to the same mobile network). Have caches 122, 124 that store the network prefix assigned to the router.

The mobile router 1 121 and the mobile router 2 123 consult each other to select a primary mobile router to represent network mobility management, and a mobile router moves to each cache 122 and 124 as the primary mobile router. Stores information indicating whether a router is present. This allows each mobile router to know which is the 'main mobile router'. Here, the method of selecting a primary mobile router has been described as 'a method by negotiation between mobile routers'. However, the present invention is not limited thereto, and the conventional mobile router selection method based on location and mobile router selection method based on data rate are not limited thereto. Various ways can be applied.

When the mobile network 110 moves on the Internet, the primary mobile router must send a 'binding update message' to the home agent 140, where all prefix information and mobile router list information stored in the cache are added to the binding update message. Mounted. The home agent 140 receives the movement location information mounted in the binding update message and stores it in the binding cache 141.

Therefore, the Internet terminals 101 to 103 are guaranteed transparency for the movement, and the primary mobile router moves by registering the location of the mobile network 110 in the binding cache 141 of the home agent 140 through the binding update message. The home agent 140 may transmit the packet to the locations of all the Internet terminals in the network 110.

2 is a diagram illustrating a network configuration after mobile network segmentation in a group mobile internet service network to which the present invention is applied, and shows the structure and the location of the mobile router and the Internet terminal after the mobile network segmentation in the Internet service network.

Hereinafter, referring to FIG. 1, a description will be given of a processing procedure performed by a mobile router system for seamlessly providing an internet access service after the mobile network is 'splunged'.

When an event in which the mobile network 110 needs to be split occurs, the mobile routers 121 and 123 delete a list of mobile routers to be separated into other mobile networks from the mobile router list stored in the caches 122 and 124. In this case, when the mobile network is split, the mobile network is split when a mobile network split request event occurs according to an operator or an application service scenario, or when the mobile network is moved (for example, mobile router 1 and mobile router 2 are different). Mobile network partitioning in any form may be included, such as when partitioned by a distance or the like due to movement). This also applies to the 'merge' of the mobile network described in FIG.

For example, referring to FIG. 2, when one mobile network 110 (in FIG. 1) is divided into mobile network 1 21 and mobile network 2 22, the mobile router 1 121 may store the corresponding cache 122. ) Deletes the list information and the prefix information for the mobile router 2 123, and the mobile router 2 123 deletes the list information and the prefix information for the mobile router 1 121 from the cache 124. do.

Although FIG. 2 illustrates a case in which one mobile router belongs to each divided mobile network as an example, a plurality of mobile routers are provided in one divided mobile network (for example, mobile network 1 (21)). In this case, mobile routers separated in the same mobile network are selected as the main mobile router again. As described with reference to FIG. 1, when the 'main mobile router' is selected, information indicating which mobile router is the main mobile router is stored in each cache.

For example, when each newly selected 'main mobile router' (in FIG. 2, there is one mobile router belonging to each separate mobile network), the mobile router 1 121 and the mobile router 2 123 Corresponding to the primary mobile router) transmits the binding update message to the home agent 140.

In short, the present invention adds a function to create / store a list of mobile routers and prefixes assigned to each mobile router to an existing multi-mobile router system, and also selects a primary mobile router from among mobile routers. Representation of the mobility management of the entire mobile network, and when an event occurs that requires separation (division) of the mobile network, the partitioning function for each mobile router to separately perform mobility management by using its own prefix It is characterized by adding the.

1 and 2 are network configuration diagrams showing before and after the splitting of the mobile network. If this is inversely regarded, the network configuration diagram for 'merging' of the mobile network may be viewed. That is, considering FIG. 2 as a network configuration before merging and FIG. 1 as a network configuration after merging, it is possible to easily grasp 'merging (combining) of the mobile networks'. This will be explained in.

3 is a flowchart illustrating a dynamic 'split' method of a mobile network for seamlessly providing an internet access service according to the present invention, and shows a split method performed in a mobile router system. Here, the mobile router system is composed of a plurality of one or more mobile routers, and provides an Internet access service to Internet terminals that form a network and move to a group.

The present invention can provide a seamless Internet connection service to an Internet terminal connected to each of the mobile routers when the network mobility protocol for the Internet group communication service is configured with multiple mobile routers and divided into two or more mobile networks. The mobile routers of each divided mobile network divide the prefix dynamically.

Each mobile router belonging to the same mobile network stores / manages a list of mobile routers (mobile router list) belonging to the mobile network (mobile network to which it belongs) and network prefix information assigned to each mobile router. (300). That is, each mobile router has not only its own prefix but also a list of other mobile routers belonging to the corresponding mobile network and each allocation prefix information.

When the primary mobile router is selected through various selection methods such as negotiation between the mobile routers, each mobile router also stores information on the selected primary mobile router (302).

As the mobile network moves, the primary mobile router sends 304 a homepage agent HA with a binding update message (called a first binding update message to distinguish it from a binding update message at " 310 "). In this case, the first binding update message includes both the list of mobile routers and the prefix information stored / managed by the main mobile router.

Later, when the mobile network is 'segmented' according to the application service scenario, for example, when the moving military network is separated according to the operation, or when one train is divided into two at the junction and departs to different destinations, respectively. Mobile routers delete information about mobile routers belonging to another mobile network due to mobile network partitioning (306). That is, each mobile router maintains only information on mobile routers belonging to the split mobile network to which it belongs, and deletes information on mobile routers belonging to other mobile networks due to the split.

In this case, when there are a plurality of mobile routers belonging to the divided mobile networks (mobile networks 1 and 2 in FIG. 2), the primary mobile routers are reselected for each divided mobile network, and each mobile router is re-selected primary mobile. Store information about the router '(308).

Then, as the split mobile network moves, the primary mobile router reselected due to the split sends a binding update message (second binding update message) to the home agent (310). In this case, the second binding update message includes a list of mobile routers and prefix information stored in the reselected primary mobile router, that is, a list and prefix information of mobile routers that are split.

4 is a flowchart illustrating a dynamic 'merging' method of a mobile network for seamlessly providing an internet access service according to the present invention, and illustrates a merging (combining) method performed in a mobile router system. The mobile network merging method to be described below corresponds to an inverse process of the mobile network splitting method described in FIG.

Each mobile router belonging to the same mobile network stores / manages 400 and network prefix information for mobile routers belonging to the mobile network 400.

For each mobile network, a primary mobile router is selected through negotiation between affiliated mobile routers, and each affiliated mobile router stores information on the selected primary mobile router (402).

As each of these mobile networks moves individually, the primary mobile router sends a binding update message to the home agent (404).

Subsequently, when a plurality of mobile networks are 'merged' according to a scenario of an application service, assuming that the merged mobile network (eg, FIG. 2 is before merging and FIG. 1 is merged), the mobile network 110 of FIG. For each mobile router belonging to), add a list and network prefix information for the mobile routers that belonged to the other mobile network before merging (406).

The master mobile router reselects the primary mobile router in the merged mobile network, and transmits a binding update message to the home agent through the primary mobile router.

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk). Such a process can be easily carried out by those skilled in the art and will not be described in 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.

As described above, the present invention is implemented in a mobile network of an Internet service network and performs a function of supporting Internet access. Even when the mobile network is divided / merged according to an application service scenario, the connection between the Internet terminal and the Internet is flexible. It is effective to maintain.

That is, when one mobile network is 'split' into two or more mobile networks according to an application service scenario, the mobile routers of each divided mobile network dynamically divide the prefixes to each mobile router. There is an effect that can provide an Internet connection service to the connected Internet terminal without interruption.

In addition, the present invention, when two or more mobile networks are 'merged' (combined) into one mobile network, the routers of the merged mobile network share the prefix, thereby providing seamless Internet connection service to Internet terminals connected to each mobile router There is an effect that can provide.

In short, the present invention, even if the mobile network is divided / merged, Internet terminals (mobile terminals) belonging to the mobile network can be provided without interruption to the Internet access service while still using the prefix used before the split / merge It works.

Claims (14)

In the dynamic segmentation method of a mobile network for providing seamless Internet access service, For each mobile router belonging to the same mobile network, a router information management step of storing and managing a list of mobile routers for the mobile network to which they belong, prefix information assigned to each mobile router, and information on a primary mobile router; A binding update step of sending, by the primary mobile router, a first binding update message to a home agent as the mobile network moves; And A splitting step of deleting, by the mobile router belonging to each divided mobile network, information on the mobile router belonging to another mobile network due to the mobile network splitting, when the mobile network is divided; Dynamic segmentation method of a mobile network comprising a. The method of claim 1, Reselecting a primary mobile router when there are a plurality of mobile routers belonging to the divided mobile network in the dividing step, and storing the information of the reselected primary mobile router by each mobile router; And The reselected primary mobile router sends a second binding update message to the home agent as the divided mobile network moves; Dynamic segmentation method of a mobile network further comprising. 3. The method according to claim 1 or 2, The router information management step, Storing and managing, by the respective mobile routers, a list of mobile routers for the belonging mobile network and prefix information assigned to each mobile router; And Selecting the primary mobile router from among mobile routers belonging to the mobile network, and each mobile router storing information on the selected primary mobile router Dynamic segmentation method of a mobile network comprising a. The method of claim 3, wherein The prefix information, Dynamically allocated to each mobile router belonging to the mobile network. The method of claim 3, wherein The primary mobile router, A method of dynamic segmentation of a mobile network, the method being selected according to one of a selection method based on negotiation between affiliated mobile routers, a location-based selection method, or a selection method according to a data transmission rate. The method of claim 2, In the first and second binding update message, A method of dynamic segmentation of a mobile network, including a list of mobile routers and prefix information stored by the primary mobile router. In the dynamic merging method of a mobile network for providing seamless Internet access service, For each mobile router belonging to the same mobile network, a router information management step of storing and managing a list of mobile routers for the mobile network to which they belong, prefix information assigned to each mobile router, and information on a primary mobile router; A merging step of adding a list and prefix information for mobile routers belonging to the other mobile network before merging, for each mobile router belonging to the merged mobile network when a plurality of mobile networks are merged; And A binding updating step of reselecting a primary mobile router in the merged mobile network and transmitting a binding update message to a home agent through the reselected primary mobile router; Dynamic merging method of a mobile network comprising a. The method of claim 7, wherein The router information management step, Storing and managing, by the respective mobile routers, a list of mobile routers for the belonging mobile network and prefix information assigned to each mobile router; And Selecting the primary mobile router from among mobile routers belonging to the mobile network, and each mobile router storing information on the selected primary mobile router Dynamic merging method of a mobile network comprising a. 9. The method according to claim 7 or 8, The prefix information, Dynamically allocated for each mobile router belonging to the mobile network. 9. The method according to claim 7 or 8, The primary mobile router, A method for dynamically merging mobile networks, which is selected according to a selection method based on a negotiation between affiliated mobile routers, a location-based selection method, or a selection method according to a data transmission rate. The method of claim 7, wherein In the binding update message, And a mobile router list and prefix information stored in the reselected primary mobile router. delete delete delete

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