JP2003283546A - Wireless mobile router - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless mobile router and a mobile administrative server in which a communication route is selected in accordance with communication contents. <P>SOLUTION: In the wireless mobile router in a communication system in which a plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to the Internet via respectively different networks and communications are performed between the terminal and a communication device connectable to the networks, at least one of a plurality of wireless mobile routers has a storage means for storing route information presenting whether or not the communication between the communication device and the terminal is to be permitted to be performed via the network to which the wireless mobile router is connected, and a communication control means for controlling whether or not the communication between the terminal and the communication device is to be set up based upon the route information stored in the storage means when there is a request to set up the communication between the communication device and the terminal via any one of a plurality of wireless mobile routers. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless mobile router that selects a communication path according to the content of data to be communicated to transmit and receive data.

[0002]

2. Description of the Related Art Conventionally, a user selects a favorite provider from a plurality of providers, makes a contract, and connects a terminal owned by the user to a server owned by the contracted provider. However, it is transmitting and receiving data. Also, the user may contract with multiple providers.

On the other hand, various kinds of networks have been constructed conventionally. These networks have various characteristics for each network according to the constructed conditions.
For example, a network with a large communication area but a small amount of data transfer and high communication security (hereinafter referred to as network A), or a network with a small communication area but a large data transfer quantity and low security (hereinafter, network (Referred to as B). When a user has contracts with a plurality of providers, the user uses one of the servers of the contracted providers to send and receive data.

Information exchanged over a wide area often has a small amount of data. In that case, there is no problem even if the transmission speed is low, and what is needed is a system having a high security level and capable of communicating without interruption and with little data error during high-speed movement. On the other hand, in a wireless communication system capable of realizing a transmission speed on the order of Mbps, investment becomes very large when installing equipment over a wide area.
It is desirable that the points exist independently, and it is not preferable to continuously cover a wide area. On the other hand,
There are problems such as security and communication interruption.

However, according to the above-mentioned conventional technique, when the network A and the network B can be connected, the communication is performed by using the network A although the required security level is low and the data amount is large. However, there is a problem in that the load on the network A is increased by performing the above. When another user tries to use the network A, the load on the network A further increases. Further, when attempting to transmit highly confidential data using the network B, there is a possibility that a malicious third party may eavesdrop and tamper with the data.

The present invention has been made in view of the above circumstances, and an object thereof is to distribute traffic by properly using a plurality of networks as necessary to reduce the load on the networks. , To provide a mobile management server. Also,
An object of the present invention is to provide a wireless mobile router and a mobile management server capable of selecting a communication route according to communication contents.

[0007]

In order to achieve the above object, the present invention provides a global network in which a plurality of wireless mobile routers are mutually connected to at least one terminal, and the wireless mobile routers are respectively connected via different networks. A wireless mobile router in a communication system in which the terminal and a communication device connectable to the network or a global network are connected to each other, wherein the communication device is at least one of the plurality of wireless mobile routers. And a communication means between the communication device and the terminal, and storage means for storing route information indicating whether or not to permit communication with the terminal via the network to which the wireless mobile router is connected. The route information stored in the storage means when there is a request for establishment. Based, a communication control means for controlling whether or not to establish communication with the terminal and the communication device,
It is characterized by having.

In the wireless mobile router according to the present invention, the communication control means detects the type of data volume and security level to be communicated between the terminal and the communication device, and the detected result and the type. It is characterized by controlling whether or not to establish communication based on the route information. In the wireless mobile router described above, the communication control means may establish communication between the terminal and the communication device via a network instructed by the terminal or the communication device, Communication is established between the terminal and the communication device via another network for which communication is permitted based on the route information stored in the storage means.

Further, the present invention is characterized in that, in the above-mentioned wireless mobile router, the networks are networks owned by different internet service providers. In the wireless mobile router, the route information stored in the storage means is read from the storage means connected to the network and stored in the storage means of the wireless mobile router. Characterize.

In the wireless mobile router of the present invention, the communication control means establishes data communication between the communication terminal and the terminal and communication between the communication device and the wireless mobile router. It is characterized in that the control as to whether or not to perform is performed using the TCP / IP protocol. Further, the present invention is characterized in that, in the above-mentioned wireless mobile router, the network includes a network using long-distance wireless communication and a network using short-distance wireless communication.

Further, the present invention is a wireless communication system in which a terminal is connected to a plurality of wireless mobile routers, at least one of the wireless mobile routers is connected to a mobile management server, and the mobile management server is connected to a global network. In the mobile management server, the route information indicating whether or not to permit communication between the terminal and a communication device connectable to the network via the network to which the wireless mobile router is connected A route information database stored for each of the mobile routers, and the route information stored in the route information storage database is read out in response to a transmission request from the wireless mobile router connected to the mobile management server, and the wireless mobile router. Via the wireless mobile router And information transmission control means for transmitting to,
It is characterized by having.

In the mobile management server of the present invention, the information transmission control means may transmit the data from the communication device to a terminal having the mobile management server as a home wireless server. It is characterized in that whether or not to permit communication through the network to which the management server is connected is controlled based on the route information stored in the route information database.

Further, according to the present invention, a terminal is connected to a plurality of wireless mobile routers, at least one of the wireless mobile routers is connected to a mobile management server, and the mobile management server is connected to a global network. In the wireless mobile router according to claim 1, when the wireless mobile router moves between networks connected to the global network and connects to another network, the fact that the wireless mobile router has moved between networks is connected to the mobile management server. Information notification means for notifying the mobile management server via a wireless mobile router other than itself and communication between a communication device connectable to the global network and the terminal are performed through a network to which the wireless mobile router is connected. Allow to do Storage means for storing route information indicating whether or not, and when the wireless mobile router moves between networks, its own route information regarding the destination network from the mobile management server via a wireless mobile router other than itself And a communication control unit that stores the information in the storage unit.

Further, according to the present invention, a plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to a global network through different networks, respectively, and the terminals and the network can be connected. In a communication system in which the communication device communicates with another communication device, the wireless communication method is executed by the wireless mobile router, and when there is a request to establish communication between the communication device and the terminal, Control of whether to establish communication between the terminal and the communication device based on route information indicating whether to permit communication with the terminal through the network to which the wireless mobile router is connected It is characterized by having a communication control procedure for performing.

Further, according to the present invention, a plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to a global network through different networks, respectively, and the terminals and the network can be connected. In a communication system for communicating with another communication device, the wireless communication program is executed by the wireless mobile router, wherein any one of the plurality of wireless mobile routers is provided between the communication device and the terminal. Based on route information indicating whether or not to permit communication between the communication device and the terminal through the network to which the wireless mobile router is connected, when there is a request to establish communication via the A communication control step for controlling whether to establish communication between the terminal and the communication device Characterized in that to execute the computer.

Further, according to the present invention, a plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to a global network through different networks, respectively, and the terminals and the network can be connected. In a communication system for communicating with other communication devices, the plurality of wireless mobile devices is a computer-readable recording medium recording a wireless communication program executed by the wireless mobile router, the recording medium being between the communication device and the terminal. One of the routers
Based on route information indicating whether or not to permit communication between the communication device and the terminal through the network to which the wireless mobile router is connected, when there is a request to establish communication via A wireless communication program for causing a computer to execute a communication control step for controlling whether or not to establish communication between the terminal and the communication device is recorded.

Further, according to the present invention, a plurality of wireless mobile routers are mutually connected to at least one terminal, and the wireless mobile routers are connected to a global network through different networks, respectively, and the terminal and the network or the global network. Is a communication system that communicates with a communication device connectable to the wireless mobile router, wherein at least one of the wireless mobile routers performs communication between the communication device and the terminal through a network to which the wireless mobile router is connected. When there is a request to establish communication between the storage unit that stores route information indicating whether or not to perform and the terminal and the communication device, the route information stored in the storage unit Based on whether to establish communication between the terminal and the communication device. And a control unit, when it is necessary to establish a communication between said terminal and said communication device, characterized in that the address resolution by using the FQDN or IP address possessed by the terminal.

[0018]

DETAILED DESCRIPTION OF THE INVENTION A wireless mobile router and a mobile management server according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing the configuration of a communication system according to an embodiment of the present invention. In this figure, the network A and the network B are connected to a global network (for example, a network such as the Internet) 500. The network A is owned by the provider A1, has a large communication area, a small communication capacity, and high security. The network B is owned by the provider B1, has a small communication area, a large communication capacity, and low security. HostA is a communication device. The communication device is a communication destination device capable of transmitting or receiving data via a wireless server and a wireless mobile router, and is, for example, a server, a general-purpose computer, or a portable terminal. . Also,
The communication device HostA is directly connected to the global network 500 in FIG. 1, but may be connected via a server, a router, or the like. Further, the communication device HostA may or may not be connected to the mobile communication system 5.

The mobile management server MDBSA1 manages the identifiers and IP addresses of the wireless servers RSA11, RSA12, wireless base stations (not shown) under its control, and the wireless mobile router 5a which is its home and Connected terminal (PDA51, PC5
2, GPS53) identifier, IP address, FQDN
(Fully Qualified Domain N
a)), and manages route information. Also, MDBSA
1 is a DHCP (Dynamic Host Config) of the network to which the wireless mobile router 5b currently belongs.
Guaration Protocol) server (in FIG. 1, the wireless server RSB1 has a DHCP server function) identification code, IP address, route information of the wireless mobile router 5b, and recording / management of the IP address. The mobile management server MDDSA2 manages the identifiers and IP addresses of the wireless servers RSA21, RSA22, wireless base stations (not shown) under its control, and also manages the MD.
The BSA2 is an identifier, IP address, and FQDN of the wireless mobile router whose home is itself and the terminal connected to it.
N, manages route information. Further, the MDBSA2 relates to another wireless mobile router (connected to the network of the provider B1) connected to the wireless mobile router, route information, an IP address, a DHCP server (provider B).
(Existing in the network owned by 1), and records and manages the IP address.

Radio servers RSA11, RSA21, RS
At least one wireless base station is connected to each A22. In addition, the wireless servers RSA11 and RSA1
2. RSA21 and RSA22 assign currently available IP addresses to the wireless mobile router (connecting to the network of the provider A1: wireless mobile router 5a, for example) that belongs to the wireless mobile router and the wireless mobile router. The identifier, IP address, and FQDN of the terminal connected to the router are stored in association with each other. Furthermore, the wireless servers RSA11, RSA12, RS
A21 and RSA22 store route information of the wireless mobile router and terminals connected to the wireless mobile router. In addition, wireless servers RSA11, RSA12, RS
A21 and RSA22 store route information, IP address, identification code of DHCP server (wireless server RSB1), and IP address for other wireless mobile routers (connected to the network of provider B1) connected to the wireless mobile router. To do. The network B is a wireless server RSB1 that communicates with the wireless mobile router 5b.
(Having a DHCP server function) is provided. Although it is preferable that the networks A and B are originally composed of IP dedicated networks, it is also possible to combine a wireless modem and a server in a data network system using a mobile telephone network.

Next, the mobile communication system 5 will be described with reference to FIG. FIG. 2 is a schematic block diagram showing the configuration of the mobile communication system. In this figure, the mobile communication system includes two wireless mobile routers 5.
a and 5b are PDA (Personal D
digital assistant 51, PC 52 which is a general-purpose computer, GPS (Global Pos)
It is mutually connected to the starting system 53. The wireless mobile routers 5a and 5b have functions of managing IP address rewriting, IP packet routing, and movement between zones.

The wireless mobile router 5a includes a communication unit 510.
And a route information storage unit 520, a communication control unit 530, and a terminal management database 540, and is connected to a wireless server via a wireless base station. An identifier (ID) is set in advance in the wireless mobile router 5a. Here, it is assumed that the home server of the wireless mobile router 5a is the mobile management server MDBSA1.

The communication unit 510 has a function of communicating with any of the wireless servers owned by the provider A1 via a wireless base station. The route information storage unit 520 indicates whether or not to permit communication between the communication device connected to the global network 500 and a terminal under its control via the network to which the wireless mobile router is connected. Memorize FIG. 3A is a diagram showing an example of the route information stored in the route information storage unit 520. The route information is an item for classifying the type of communication, "data capacity" that identifies the volume of data to be communicated, "security level" that indicates the confidentiality of the content to be communicated, and "port number to be used". port number",
The "communication destination" that identifies the communication partner, the name of the wireless mobile router to be controlled, and the "permission / non-permission" that indicates whether or not establishment of communication is permitted for the communication partner of the "communication destination" item It is provided. Note that the items for classifying the types of communication may be provided according to the communication conditions.
The items are not limited to those shown in (a). For example, an item such as “communication charge” for selecting the wireless mobile router to be used according to the amount of communication charge may be provided. Further, when communication is permitted, an item regarding whether or not to use the VPN may be provided.

When there is a request from the terminal to establish communication with the communication device via the wireless mobile router 5a, the communication control unit 530 determines the communication device and the terminal based on the route information stored in the route information storage unit 520. TCP / IP (Transmission) controls whether or not to establish communication with
Control Protocol / Internet
Protocol) protocol. As a result, in each wireless mobile router, by controlling whether or not to establish communication, the network used for communication is selected and determined. In addition, the communication control unit 53
0 is to detect the type of data to be communicated between the terminal and the communication device when controlling whether to establish communication between the communication device and the terminal, and establish communication according to the detection result. Control whether or not. What is the type of data here?
It is decided based on items for understanding the nature of the data such as the data source, destination, data volume, security level, port number, etc. This is done by analyzing the data transmission request transmitted from the terminal. Items other than the above-mentioned items may be used as the items for grasping the property of the data.

As shown in FIG. 4, the terminal management database 540 stores, as information about the wireless mobile router itself, the identifier of the wireless mobile router in association with the IP address or FQDN assigned by the wireless server to which it currently belongs. At the same time, the number of registered terminals to be managed is stored. In addition, the terminal management database 540, as information about the terminal, is issued by the identifier and the home mobile management server itself, or based on the information from the mobile management server, the IP address and FQDN and the registration status (issued by the wireless mobile router) ( Whether or not it has been registered) is associated and stored. Even when the wireless mobile router 5a moves in the base station zone of the wireless base station, if the wireless server managing the wireless base station of the moving destination is the same, it is not necessary to perform registration authentication again, and the registration authentication is performed continuously. Communication is possible.
When moving to a zone of a different wireless server (for example, RSA2), the communication control unit 530 makes a registration request to the wireless server (RSA2) that manages the wireless base station in the communication range so that communication can be continued. To control. Then, at the time of first registration of the wireless mobile router in the area, an area manager server having a function of managing the route information of the wireless mobile router obtained from the home mobile management server and the terminals connected thereto is provided in the area. It is possible to use a method of acquiring the route information of the mobile router and the terminal connected thereto from the area manager server every time the wireless router connected in the area is changed.

The wireless mobile router 5a and each terminal PDA5
For communication with the PC 1, the PC 52, and the GPS 53, a wireless LAN such as Ethernet (registered trademark) or Bluetooth (registered trademark) is used. In the case of wireless communication, the short-range communication unit 550 and each terminal PDA 51, PC 52, GP.
Wireless communication is performed between S53. In addition, the wireless mobile router 5a and each terminal PDA51, PC52, GP
When S53 and Bluetooth are connected by Bluetooth (registered trademark), PPP (Point-to-poi) is used.
nt Protocol) is applied and the wireless mobile router 5a operates as an access server of the terminal to establish a connection. At this time, the terminal management database 54 further stores device information for establishing wireless communication with the terminal connected to the wireless mobile router 5a. For example, the device information is blue for each terminal.
Blu for communicating by Bluetooth (registered trademark)
Bluetooth (registered trademark) address and Bluetooth
Information about the h® clock and link key is included.

Terminals PDA51, PC52, GPS53
Communicates with a communication device via any one wireless mobile router in the mobile communication system 5 to which it belongs.

The wireless mobile router 5b includes a communication unit 511.
And a route information storage unit 521, a communication control unit 531 and a terminal management database 541. The terminal management database 541 is similar to the wireless mobile router 5a terminal management database 540, and therefore its description is omitted. The communication unit 511 is a wireless L of a predetermined communication method.
It has a function of communicating with a wireless server using an AN (local area network), and wirelessly communicates with any of the wireless servers owned by the provider B1. Here, the predetermined communication method is, for example, “dot eleven”, that is, the wireless LAN standard “IEEE802.1”.
It is a wireless communication system based on "1". As a wireless system, "I
When “EEE802.11b” is used, for example, the maximum transmission speed is 11 Mbps and the maximum transmission distance is about 100 m.

The route information storage unit 521 stores the route information shown in FIG. The communication control unit 531 has the same function as the communication control unit 530 of the wireless mobile router 5a, and at the same time, when the wireless mobile router 5b moves between networks, the wireless mobile routers other than itself (for example, the wireless mobile router MDBS1) (for example, , And receives the route information of its own in the destination network via the wireless mobile router 5a) and stores it in the route information storage unit 521. In addition, the communication control unit 531 controls each terminal (PDA 5
1, the PC 52, the GPS 53) and the short-range wireless communication are performed through the short-range wireless unit 550.

The information notifying unit 551 indicates that the wireless mobile router 5b has moved between networks connected to the Internet, and has moved between networks when connecting from the network B to the network C shown in FIG. 12, for example. Notify the mobile management server via a wireless mobile router other than itself connected to the mobile management server. The information to be notified is the identification code and IP address of the wireless server of the destination network.

Next, the mobile management server M in FIG.
The DBSA1 will be described with reference to the drawings. FIG. 5 is a schematic block diagram for explaining the configuration of the mobile management server MDBSA1. In this figure, the communication unit 21 transmits and receives various data to and from an external device. The information transmission control unit 22 reads the route information of the wireless mobile router 5a stored in the route information database 23 in response to a request for transmitting the route information from the wireless server to which the wireless mobile router 5a is connected, and the read route. The communication unit 21 controls the transmission of information to the wireless mobile router 5a via the wireless server to which the mobile wireless device is connected.
Further, when communicating from the communication device HostA to the terminals PDA51, PC52, and GPS53, the information transmission control unit 22 determines the destination at the time of resolving the destination.
3, referring to the contents stored in the provider information storage unit 24 and the mobile unit management information database 25, the terminal P
From the comparison result of the route information of the wireless mobile router 5a and the wireless mobile router 5b to which the DA 51, the PC 52, and the GPS 53 are connected and the type of data that the communication device HostA is trying to communicate with, the wireless mobile device in the network permitted to communicate The IP address of the wireless server to which the router is connected is returned to the communication device HostA.
In addition, the information transmission control unit 22 uses the mobile management server MD
A communication device H is provided for a terminal using BS1 as a home wireless server.
When data is transmitted from ostA, whether or not to permit communication via the network to which the mobile management server MDBS1 is connected is controlled based on the route information stored in the route information database 23.

The route information database 23 includes a wireless mobile router 5a and a wireless mobile router 5 having the mobile management server MDBSA1 as a home mobile management server.
Whether or not to permit each of the wireless mobile routers 5b in the mobile communication system 5 connected to a to communicate between the communication device of the communication destination and the wireless mobile router through the network to which the wireless mobile router is connected. The route information indicating that is stored.

An example of the route information stored in the route information database 23 is shown in FIG. As shown in this figure,
The route information is the wireless mobile router 5a using the mobile management server MDBSA1 as the home mobile management server and the wireless mobile router 5 connected to the wireless mobile router 5a.
b is stored for each network. Note that FIG.
Describes a case where the wireless mobile router managed by the mobile management server is the wireless mobile router 5a and the other wireless mobile router in the mobile communication system connected thereto is only one wireless mobile router 5b. However, the same applies when there are two or more wireless mobile routers connected to the wireless mobile router 5a.

As shown in FIG. 7, the provider information storage unit 24 stores the network name to which the wireless mobile router 5b may connect and the DHCP controlling the network.
The server identifier is associated and stored. The mobile body management information database 25 associates the mobile body management information of the wireless mobile router 5a and each terminal that enables communication in order to embed the wireless mobile router 5a and each terminal connected to the wireless mobile router 5a. Register and remember. That is, the identifiers of wireless mobile routers and terminals that enable communication, and at least one of the IP address and FQDN are associated with each other, registered in advance, and stored. The mobile unit management information database 25 is, for example, as shown in FIG.
As shown in FIG. 3, as information regarding the wireless mobile router 5a, an identifier for identifying the wireless mobile router 5a and an IP assigned from the wireless server to which the wireless mobile router 5a currently belongs
The address and the number of registrations of terminals under the control of the wireless mobile router 5a are stored in association with each other, and the information for identifying the terminals includes an identifier for identifying each terminal and an FQDN.
And the IP address issued by the mobile router based on the information from the home mobile management server are stored in association with each other. These pieces of information are stored as mobile body management information, and when there are a plurality of mobile communication systems, the information of each wireless mobile router and the terminals under it is stored. The identifier mentioned here is, for example, a number peculiar to the device set at the manufacturing stage.

Each wireless server in FIG. 1 stores the mobile body management information shown in FIG. 8, and based on this mobile body management information, each wireless mobile router and terminal currently belonging to itself is stored. Manage. In this case, it is not always necessary to store the FQDN information.

Next, the operations of the wireless mobile router 5a, the wireless mobile router 5b and the mobile management server MDBSA1 in the configuration of FIG. 1 will be described with reference to the drawings.
First, a processing procedure for setting the route information in the wireless mobile routers 5a and 5b will be described with reference to the flowchart of FIG. Here, the wireless mobile router 5a, PDA5
1, the PC 52, the GPS 53, and the wireless mobile router 5b are within the communication area of the wireless server RSA11, and the wireless mobile router 5b is within the communication area of the wireless server RSB1.

First, when power is applied to the wireless mobile router 5a and then to the PDA 51, PC 52, GPS 53, and wireless mobile router 5b, the communication control unit 530 of the wireless mobile router 5a instructs the wireless server RSA11. Make your own registration request. Wireless server RSA11
Makes an authentication decision from the authentication information about the wireless mobile router 5a obtained from the mobile management server MDBSA1 and the random value calculation result obtained from the wireless mobile router 5a, and if the authentication is successful, the wireless mobile router is registered. Send reception information, mobile management server MD
Authentication completion information is transmitted to BSA1. The mobile management server MDBSA1 receives the authentication completion information and registers the wireless mobile router 5a (step S1).

Upon completion of authentication and registration, the communication control unit 530 of the wireless mobile router 5a can connect to the wireless mobile router 5a itself and the wireless mobile router 5a stored in the terminal management database 540 for the mobile management server MDBSA1. Each terminal PDA51, PC5
2. Request route information about the GPS 53. The information transmission control unit 22 of the mobile management server MDBSA1
When the request for the route information is received from the wireless mobile router 5a, the route information of the wireless mobile router 5a, the terminals PDA51, PC52, and GPS53 is read from the route information database 23 from the route information database 23, and the read route information is passed through the wireless server RSA11. To the wireless mobile router 5a. The wireless mobile router 5a stores the received route information in the route information storage unit 520 (step 2).

The communication control unit 530 of the wireless mobile router 5a uses the multi-terminal PDA 51, PC 52, GPS 5
3 and the request from the wireless mobile router 5b,
Authentication and registration and issuance of an IP address are performed (step S3).

The wireless mobile router 5b connects to the access point of the network B (step S4), and DH
From the wireless server RSB1 having the CP function to the wireless server RS
The identification code of B1 and the IP address and the IP address of the wireless mobile router 5b are acquired (step S5).

Next, the wireless mobile router 5b uses the obtained identification code and IP address of the wireless server RSB1 as an IP address assigned by the wireless mobile router 5a via the wireless mobile router 5a and the wireless server RSA11 to the mobile management server MDBSA1. And the request for the route information of the wireless mobile router 5b itself (step S6).

The mobile management server MDBSA1 reads out the network name corresponding to the identification code of the DHCP server transmitted from the wireless mobile router 5b from the provider information storage unit 24 and specifies it based on the stored information. Then, the route information of the wireless mobile router 5b in the specified network name is stored in the route information database 23.
From the wireless mobile router 5b.
It is transmitted to the wireless mobile router 5b via a. As a result, the route information relating to itself in the domain currently belonging to the wireless mobile router 5b is stored in the route information storage unit 521 (step S7).

Then, as shown in FIG. 12, when the wireless mobile router 5b moves from the communication area of the network B to the communication area of the network C, step S
The process moves to 4 (step S8). Then, the information notifying unit 551 of the wireless mobile router 5b connects to the access point of the network C and performs the process in step S5, and then the mobile management server MDBSA is notified via the wireless mobile router 5a that the network has moved.
1 is requested and route information is requested (step S6).
The contents of this notification are DHCP of the network C.
An identification code of a wireless server having a function, an IP address, and an IP address of the wireless mobile router 5b acquired from the wireless server of the network C. Then, the mobile management server MDBSA1 sends the route information of the wireless mobile router 5b in the network C to the wireless server RSA11.
And the wireless mobile router 5a. The wireless mobile router 5b stores this route information in the route information storage unit 5
It is stored in 21 (step S7). As a result, even when the wireless mobile router 5b moves between networks, it is possible to select a network to be used for communication based on the route information in the destination network.

When the wireless mobile router 5a moves across the wireless server, the wireless mobile router 5a performs registration and authentication processing with the home mobile management server via the wireless server of the moving destination, and the route information is obtained. (Security information) is acquired from the home mobile management server (Japanese Patent Application No. 2001-162720).

Next, a case of transmitting data from the terminal side after the route information is set in the wireless mobile router 5a and the wireless mobile router 5b described above is shown in FIG.
Will be explained. Here, from the PC 52 to the communication device H
A case where data is transmitted to ostA using the port number 80 will be described. The PC 52 is a communication device Host
When transmitting data to A, a data transmission request indicating the content of the data to be transmitted is transmitted to the wireless mobile router 5a (reference numeral a). Here, the data capacity, security level, port number to be used, and communication destination are set in the data transmission request and transmitted.

The communication control unit 53 of the wireless mobile router 5a
0 receives the data transmission request from the PC 52, analyzes the received data transmission request, and detects the content of the data. Here, the content of the data is detected for the following items. 1. Compare the data capacity notified by the data transmission request with the reference value of the data transmission capacity preset in the wireless mobile router 5a and detect whether it is equal to or more than the reference value 2. Data transmission request The security level notified by the above is compared with the reference value of the security level preset in the wireless mobile router 5a, and it is detected whether it is the reference value or more 3, the detection of the port number 4 to be used, the communication destination Detection of FQDN

Next, the communication control unit 530 of the wireless mobile router 5a can perform communication based on the detection result in the above item and the route information (FIG. 3A) stored in the route information storage unit 520. Is detected. Here, the detection result of the data capacity is “large” and the detection result of the security level is “low”. In this case, since establishment of communication using the network A is not permitted at all communication destinations using the port number 80, the communication control unit 530 notifies the PC 52 that communication is impossible. Then, the communication control unit 530 detects whether or not there is another wireless mobile router connected to the wireless mobile router 5a. Here, the wireless mobile router 5b is detected. Then, the communication control unit 530 causes the PC 5 to transmit the data transmission request to the wireless mobile router 5b.
2 and notifies the identifier of the wireless mobile router 5b (reference numeral b).

When notified by the wireless mobile router 5a that communication is not possible, the PC 52 uses the identifier of the wireless mobile router 5b notified by the wireless mobile router 5a to send a data transmission request to the wireless mobile router 5b.
(Reference numeral c).

The communication control unit 53 of the wireless mobile router 5b
1 analyzes the content of data. This analysis processing is performed similarly to the communication control unit 530 of the wireless mobile router 5a. Then, when the detection result of the data capacity is “large” and the detection result of the security level is “low”, the communication control unit 531 uses the wireless mobile router 5a at all communication destinations using the port number 80. Since establishment of the established communication is permitted, the PC 52 is notified that communication is possible (reference numeral d).

When the PC 52 is notified by the wireless mobile router 5b that communication is possible, the data whose destination is set to the communication device HostA is transferred to the wireless mobile router 5b.
(Reference numeral e). The wireless mobile router 5b is P
The data transmitted from C52 is transmitted to the wireless server RSB1 (reference numeral f). The wireless server RSB1 uses the data transmitted from the wireless mobile router 5b as the communication device Host.
It transmits to A (code g). According to this embodiment. For data with a large data capacity and a low security level, the load on the network A can be reduced by using the network B, and an optimum communication path can be selected according to the content of the data to be communicated. It becomes possible to do.

In the above-described embodiment, the data having the data capacity “Large” and the security level “High” addressed to the communication device HostA using the port number 21 is stored in the wireless mobile router 5a. Communication can be established. The destination is the port number 110.
Any one of the communication terminal of the provider A1 that uses the port number, the mail server of the communication device HostA that uses the port number 23, and the communication device HostA that uses the port number 53, and the data capacity is "small" and the security Data whose level is “high” can establish communication using the wireless mobile router 5a. Further, both the wireless mobile router 5a and the wireless mobile router 5b use the data whose data capacity is "small" and whose security level is "low" addressed to any of the communication devices using the port number 80. It is possible.

In the above embodiment, each terminal is connected to the wireless mobile router 5a to the wireless mobile router 5a.
After the notification of the identifier of b, the data transmission request may be transmitted to the wireless mobile router 5b first, and the wireless mobile router 5a may be used when communication is impossible.

Next, the case of transmitting data from the communication device HostA to the PC 52 will be described with reference to FIG. Here, a case where data is transmitted from the communication device HostA to the PC 52 using the port number 80 will be described. When transmitting data to the PC 52, the communication device HostA sets the transmission destination to the FQDN or IP address of the PC 52 and transmits a data transmission request to the mobile management server MDBSA1 (reference symbol o).

The information transmission control unit 22 of the mobile management server MDBSA1 uses the PC received from the communication device HostA.
The content of the data transmitted from the transmission request addressed to 52 is detected. Here, it is detected that the data capacity is “large” and the security level is “low”, and establishment of communication is not permitted from the route information of the network A stored in the route information database 23. Is detected. Then, the information transmission control unit 22 determines that the communication device HostA
Is notified that communication is impossible. Furthermore, in the information transmission control unit 22, the PC 52 is connected to the wireless mobile router 5b from the mobile body management information database 25,
It is detected that the DHCP server of the wireless mobile router 5b is the wireless server RSB1. Further, the information communication control unit 22 detects from the provider information storage unit 24 and the route information database 23 that this communication is permitted in the network B to which the wireless mobile router 5b is connected. Then, the information transmission control unit 22 notifies the communication device HostA of the IP address of the wireless server RSB1 (symbol p).

When the communication device HostA is notified that communication with the PC 52 via the network A is impossible, the IP address of the wireless server RSB1 which is the DHCP server of the wireless mobile router 5b notified from the mobile management server MDBSA1. A data transmission request is transmitted to the wireless mobile router 5b using the address (reference numeral q).

Communication controller 53 of wireless mobile router 5b
1 analyzes the content of the data transmitted from the communication device HostA. Here, the detection result of the data capacity is "Large".
Since the security level detection result is “low” and the establishment of communication using the wireless mobile router 5b is permitted at all communication destinations using the port number 80, communication with the communication device HostA is possible. Notify that there is (reference numeral h).

When the communication device HostA is notified by the wireless mobile router 5b that communication is possible, the communication device HostA sends the data whose destination is set to the PC 52 to the wireless mobile router 5b via the wireless server RSB1 which is a DHCP server. (Sign j). The wireless mobile router 5b transmits the data transmitted from the communication device HostA to the PC 52 (reference character k).

According to this embodiment, when data having a large data capacity and a low security level is transmitted from the communication device HostA to the terminal side, it is transmitted via the network B to reduce the load on the network A. In addition to being able to reduce the number, it becomes possible to select an optimal communication path according to the content of data transmission and perform communication.

In the above-described embodiment, the case has been described in which the wireless mobile router on the other side that first transmits the data transmission request is the wireless mobile router 5a. In principle, this method is preferable from the viewpoint of security management, but when the nature of the data handled by the communication device is fixed, for example, when the nature of the data transmitted from a certain communication device handles only data with a low security level, , Wireless mobile router 5 using network B
b, or when only data having a high security level is handled, the network A may be used to pass through the wireless mobile router 5a.

When data is transmitted, the data is T
CP / IP (Transmission Control)
l Protocol / Internet Proto
col) packet, it is possible to transmit data by transmitting a data transmission request and transmitting data in response to the response based on the procedure described above. On the other hand, UDP (User Datagram Proto)
If data is transmitted using col), the functions of the information transmission control unit 22 and the route information database 23 of the wireless mobile router 5a are also provided in the wireless server, and whether the wireless server permits the data communication. Whether or not to control. Thus, even in data communication using UDP, it is possible to select a communication path according to the content of the data.

Further, in the above embodiment, the case where two wireless mobile routers are connected in the mobile communication system has been described, but three or more wireless mobile routers may be connected. In this case, if one wireless mobile router is not permitted to establish communication between the terminal and another communication device, it is necessary to detect whether the plurality of other wireless mobile routers are permitted to establish communication in order. Determines the communication path.

In the above-described embodiment, the wireless mobile router 5a, the wireless mobile router 5b, and the IP address assigned to each terminal are DHCP IP addresses.
Although the case of an address has been described, a fixedly set IP address may be used or mobile IP may be used. Further, when transmitting data from the host connected to the global network 500 side to the wireless mobile router 5a side, in order to know which wireless server each terminal is under, the wireless mobile router 5a, Wireless mobile router 5
b, a communication management server that stores an identifier (or FQDN) of a communication device connected to the network A, such as each terminal, and an IP address of the mobile body notified from the wireless server to which the mobile body is connected is set to the network A or It is provided in the global network 500. Then, in response to a notification request of the IP address corresponding to the identifier (or FQDN) from the communication device side, a system for transmitting the IP corresponding to the identifier (or FQDN) from the communication management server to the communication device side (Japanese Patent Application No. 2001-162720). Issue, Japanese Patent Application 200
It is preferable to use the system shown in No. 1-216562) for the network A.

It should be noted that the above-mentioned route information storage unit 520 and communication control unit 530 may be used in any one of the mobile communication systems.
When the communication control unit 530 of the wireless mobile router has a request to establish communication, the communication control unit 530 of the wireless mobile router uses the route information stored in the route information storage unit 520 in the mobile communication system. The communication route may be determined so as to pass through any of the wireless mobile routers, and each wireless mobile router may be managed. For example,
The communication control unit 520 searches the information stored in the route information storage unit 520 for a wireless mobile router that is permitted to communicate when communication cannot be established between the terminal and the communication terminal via the wireless mobile router of its own. , Establish communication between the communication device and the terminal via the searched wireless mobile router.

In the above embodiment, when the wireless mobile router 5b moves between communication areas,
The case where the network after movement is specified using the identifier of the DHCP server has been described. However, information regarding the current position is acquired from the GPS 53, a server having the current position as a communication area is detected, and the network of the connection destination is specified. You may do it. In addition, an item of “speed” is provided as an item included in the route information, speed information is acquired from the GPS 53, and a wireless mobile router that can communicate at the current speed is selected according to the moving speed. Good.

The wireless mobile router 5a may be provided with the route information database 23 of the mobile management server MDBS1 so that the route information is stored in advance. This makes it possible to omit the procedure of having the mobile management server send the route information. Also, a mobile phone may be connected to the wireless mobile router 5a to connect to a public line network.

Further, the wireless mobile router and the terminal may be provided in one housing. Further, the above-mentioned wireless mobile router and mobile management server may be applied in a configuration in which a domain name server and a firewall are provided in the network.

Further, the wireless mobile router 5a (5
The function of the communication control unit 530 (531) in FIG.
By recording a program for realizing the function of the information transmission control unit 22 of the mobile management server MDBS1 in a computer-readable recording medium, and reading the program recorded in the recording medium into a computer system and executing the program. You may control whether to permit establishment of communication. The “computer system” mentioned here includes an OS and hardware such as peripheral devices.

The "computer system" is WW.
If the W system is used, the homepage providing environment (or display environment) is also included. The "computer-readable recording medium" means a flexible disk, a magneto-optical disk, a ROM, a CD-
A portable medium such as a ROM or a storage device such as a hard disk built in a computer system. Further, the "computer-readable recording medium" means to hold a program dynamically for a short time like a communication line when transmitting the program through a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system that serves as a server or a client in that case holds a program for a certain period of time. Also, the program above
It may be for realizing some of the above-mentioned functions, or may be for realizing the above-mentioned functions in combination with a program already recorded in the computer system.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and includes a design etc. within the scope not departing from the gist of the present invention. Be done.

[0070]

As described above, according to the present invention, the route information is stored in at least one of the plurality of wireless mobile routers, and the wireless mobile router is connected between the communication device and the terminal. When there is a request to establish communication via any one of them, it is arranged to control whether or not to establish communication between the terminal and the communication device based on the route information. The data can be transmitted via the communication path, and thus the traffic can be dispersed and the load on the network can be reduced.

Further, according to the present invention, the content of data communicated between the terminal and the communication device is detected, and whether or not to establish communication is controlled based on the detection result and the route information. Therefore, it is possible to select the communication path according to the communication content, and thereby, it is possible to obtain the effect that the data communication can be performed using the optimum communication path based on the communication content.

Further, according to the present invention, the route information is read from the storage means connected to the network as necessary and stored in the storage means of the wireless mobile router. It is possible to prevent an increase in the storage capacity to be stored, and thus it is possible to improve the mountability of the storage means in the wireless mobile router.

Further, according to the present invention, before the data is transmitted between the communication terminals, whether or not the communication between the communication device and the wireless mobile router is established is controlled in advance. It is possible to prevent wasteful data transmission, and thereby reduce the increase in traffic related to the network when controlling whether or not to establish communication.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing the configuration of a communication system according to an embodiment of the present invention.

FIG. 2 is a schematic block diagram showing a configuration of a wireless server RSA1.

FIG. 3 is a diagram showing an example of route information stored in a wireless mobile router.

FIG. 4 is a diagram showing an example of information stored in a terminal management database 540 of the wireless mobile router 5a.

FIG. 5 is a schematic block diagram for explaining a configuration of a mobile management server MDBSA1.

FIG. 6 is a drawing showing an example of route information stored in a route information database 23 of a mobile management server MDBS1.

FIG. 7 is a diagram showing an example of information stored in a provider information storage unit 24 of the mobile management server MDBS1.

FIG. 8 is a diagram showing an example of information stored in a mobile management information database 25 of a mobile management server MDBS1.

FIG. 9 is a flowchart for explaining a processing procedure for setting path information in the wireless mobile routers 5a and 5b.

FIG. 10 is a diagram for explaining a case where data is transmitted from the terminal side after the route information is set in the wireless mobile router 5a and the wireless mobile router 5b.

FIG. 11 is a diagram for explaining a case where data is transmitted from the communication device HostA to the PC52.

FIG. 12 is a diagram for explaining a case where the wireless mobile router 5b moves between areas of a network.

[Explanation of symbols]

5 Mobile Communication Systems 5a, 5b Wireless Mobile Router 51 PDA 52 PC 53 GPS 510, 511
Communication unit 520, 521 Route information storage unit 530, 531
Communication control unit 540, 541 Terminal management database 550 Short-range communication unit 551 Information notification unit 500 Global network RSA11, RSA12, RSA21, RSA22, R
SB1 Wireless server MDBSA1, MDBSA2 Mobile management server HostA Communication device A, B Network

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeki Kokubun             1-12-14 Koishikawa, Bunkyo-ku, Tokyo Mitsubishi             Materials Corporation Mobile Business Promotion Division (72) Inventor Toshiyuki Chiba             1-12-14 Koishikawa, Bunkyo-ku, Tokyo Mitsubishi             Materials Corporation Mobile Business Promotion Division (72) Inventor Rikuo Takano             1-12-14 Koishikawa, Bunkyo-ku, Tokyo Mitsubishi             Materials Corporation Mobile Business Promotion Division F term (reference) 5K030 GA11 HA08 HC09 HD03 JL01                       JT09 KA05 LB05                 5K067 AA12 BB21 EE02 EE10 EE16                       FF02 GG01 GG11 HH05 HH11                       HH23 JJ11

Claims (14)

[Claims] 1. A plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to a global network through different networks, respectively, and the terminals can be connected to the network or the global network. A wireless mobile router in a communication system for communicating with a communication device, wherein the wireless mobile router is connected to at least one of the plurality of wireless mobile routers for communication between the communication device and the terminal. Storage means for storing route information indicating whether or not to permit execution through a network, and the storage means stored in the storage means when there is a request for establishing communication between the communication device and the terminal. Establish communication between the terminal and the communication device based on route information A wireless mobile router, comprising: a communication control unit that controls whether or not the wireless mobile router. 2. The communication control means detects the type of data volume and security level to be communicated between the terminal and the communication device, and establishes communication based on the detection result and the route information. The wireless mobile router according to claim 1, wherein the wireless mobile router controls whether or not to perform. 3. The communication control means is stored in the storage means when communication cannot be established between the terminal and the communication device via the network instructed by the terminal or the communication device. The wireless mobile router according to claim 1 or 2, wherein communication is established between the terminal and the communication device via another network for which communication is permitted based on the route information. 4. The wireless mobile router according to claim 1, wherein the networks are networks owned by different internet service providers. 5. The route information stored in the storage means is:
The wireless mobile router according to any one of claims 1 to 4, wherein the wireless mobile router is read from a storage unit connected to the network and stored in a storage unit of the wireless mobile router. 6. The communication control means controls data communication between the communication terminal and the terminal, and controls whether or not to establish communication between the communication device and the wireless mobile router by a TCP / IP protocol. 6. The wireless mobile router according to claim 1, wherein the wireless mobile router is a wireless mobile router. 7. The radio according to claim 1, wherein the network includes a network using long-distance wireless communication and a network using short-distance wireless communication. Mobile router. 8. A mobile management server in a wireless communication system in which a terminal is connected to a plurality of wireless mobile routers, at least one of the wireless mobile routers is connected to a mobile management server, and the mobile management server is connected to a global network. In each of the wireless mobile routers, route information indicating whether or not to permit communication between the terminal and a communication device connectable to the network through a network to which the wireless mobile router is connected is provided. And a route information database to store the route information stored in the route information storage database in response to a transmission request from the wireless mobile router connected to the mobile management server, and via the wireless mobile router. Information to be sent to the wireless mobile router Mobile management server, characterized by having, a transmission control unit. 9. The information transmission control means, when transmitting data from the communication device to a terminal having the mobile management server as a home wireless server, via the network to which the mobile management server is connected. The mobile management server according to claim 8, wherein whether or not to permit communication is controlled based on the route information stored in the route information database. 10. A wireless mobile router in a wireless communication system in which a terminal is connected to a plurality of wireless mobile routers, at least one of the wireless mobile routers is connected to a mobile management server, and the mobile management server is connected to a global network. In the case where the wireless mobile router moves between networks connected to the global network and connects to another network, the fact that the wireless mobile router has moved between networks indicates that the wireless mobile router other than itself is connected to the mobile management server. Information notification means for notifying the mobile management server via a mobile router and communication between the communication device connectable to the global network and the terminal are permitted through the network to which the wireless mobile router is connected. Indicates whether to do Storage means for storing route information, and when the wireless mobile router moves between networks, receives its own route information regarding the destination network from the mobile management server via a wireless mobile router other than itself. And a communication control unit that stores the storage unit in the storage unit. 11. A plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to a global network via different networks, respectively, and the terminal and a communication device connectable to the network. Is a wireless communication method executed by the wireless mobile router in a communication system for performing communication between the communication device and the terminal when there is a request to establish communication between the communication device and the terminal. Communication control for controlling whether or not to establish communication between the terminal and the communication device based on route information indicating whether or not to permit communication through the network to which the wireless mobile router is connected A wireless communication method comprising a procedure. 12. A plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to a global network via different networks, respectively, and the terminal and a communication device connectable to the network. Is a wireless communication program executed by the wireless mobile router, wherein communication is performed between the communication device and the terminal via any one of the plurality of wireless mobile routers. When there is a request for establishment, the communication with the terminal is performed based on route information indicating whether or not to permit communication between the communication device and the terminal through the network to which the wireless mobile router is connected. The computer is provided with a communication control step for controlling whether or not to establish communication with the device. Wireless communication program for causing a row. 13. A plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to a global network through different networks, respectively, and the terminal and a communication device connectable to the network. Is a computer-readable recording medium in which a wireless communication program executed by the wireless mobile router is recorded, and the wireless communication program is executed between the communication device and the terminal, among the plurality of wireless mobile routers. A path indicating whether or not to permit communication between the communication device and the terminal through the network to which the wireless mobile router is connected when there is a request for establishing communication via any one of them Whether to establish communication between the terminal and the communication device based on information Recording medium recording a wireless communication program for executing a communication control step for controlling the computer. 14. A plurality of wireless mobile routers are mutually connected to at least one terminal, the wireless mobile routers are connected to a global network through different networks, respectively, and the terminals can be connected to the network or the global network. A communication system in which communication is performed with a communication device, wherein at least one of the wireless mobile routers permits communication between the communication device and the terminal through a network to which the wireless mobile router is connected. Storage means for storing route information indicating whether or not to perform the request, and the terminal based on the route information stored in the storage means when there is a request for establishing communication between the terminal and the communication device. And communication control means for controlling whether or not to establish communication with the communication device, A communication system when there is a need to establish a communication between said terminal and said communication device, characterized in that the address resolution by using the FQDN or IP address possessed by the terminal.