WO2005117359A1

WO2005117359A1 - Transmission device and method thereof

Info

Publication number: WO2005117359A1
Application number: PCT/JP2004/007478
Authority: WO
Inventors: Makoto Takashima; Yoshihisa Gomi
Original assignee: Hewlett-Packard Development Company, L.P.
Priority date: 2004-05-31
Filing date: 2004-05-31
Publication date: 2005-12-08

Abstract

A gateway program (40) receives data from a mobile station, adds a VLAN tag of a user system corresponding to the mobile station, converts the IP address into an IP address based on the system of the user system, and transmits it to the user system (30). Moreover, the gateway program (40) receives data from the user system, deletes the VLAN tag, converts the IP address into an IP address of the mobile station corresponding to the user system, and transmits it to the mobile station of the mobile communication system (2).

Description

Specification

Transmission apparatus and method

Technical field

The present invention relates to a transmission device and a transmission method for transmitting data between a plurality of communication systems in which an address system and a communication protocol are not unified.

Background art

[0002] For example, Non-Patent Document 1 discloses a VLAN (Local Area Network) that sets a virtual group of terminals and transmits data independently of the physical connection mode. Virtual LAN).

For example, Non-Patent Document 2 discloses a VPN (Virtual Private Network) that transmits data using a public line as if it were a dedicated line.

Also, for example, Non-Patent Document 3 discloses data communication via a mobile phone.

[0003] At present, TCP / IP (Transmission Control) is used for data transmission.

A communication protocol called Protocol / Internet Protocol) is generally used. In this TCP / IP, an IP address is used for data transmission.

An identifier (tag) is attached to a VLAN or VPN, and is used to identify the VLAN or VPN during data transmission.

[0004] However, since an IP address is often set in a unique system for each of a plurality of communication systems, an effective IP address for one communication system is used for other communication systems. Is not always effective.

In communication protocols other than VLAN or VPN, tags for communication system identification are not generally used.

[0005] Therefore, when connecting between a plurality of communication systems, when transmitting data between communication systems having a unique IP address system, it is necessary to match IP addresses between these communication systems. .

Also, a communication system that performs data transmission by VLAN or VPN and another communication system (for example, a data communication system using a mobile phone disclosed in Non-Patent Document 3). When data is transmitted to or from such devices, addition and deletion of tags are required. Non-patent document 1:

http: // www.hp.com/ roducts 11 unixserverconnectivity / adapters / ethernet / inrolibrary / VLAN_wp.pdf

Non-Patent Document 2: https://ftp.rfc-editor.org/in-notes/rfc2764.txt

Non-Patent Document 3:

https://www.kddi.com/busmess/ service / network / ezwebimk / index.htmi

Disclosure of the invention

[0006] The present invention has been made in view of the above background, and has a transmission device and a transmission method capable of transmitting data between a plurality of communication systems in which an address system and a communication protocol are not unified. The purpose is to provide.

[0007] In order to achieve the above object, a transmission device according to the present invention relates to a plurality of first communication nodes and any one of the plurality of first communication nodes. A transmission device for transmitting data to and from a plurality of second communication nodes for transmitting data to and from a first communication node, wherein the first communication node is provided with a first identifier. Wherein the first communication node transmits data using the first identifier and one or more first addresses of the first communication node, and wherein the second communication node Data is transmitted using a second address having the same or different system as the first address of the associated first communication node, and a first identifier of the first communication node; First associating means for associating with the first address, and the first communication node; Second associating means for associating a first identifier of the first communication node with the second communication node corresponding to the first communication node; and transmitting the data to the first communication node. A first receiving unit that receives first data from a second communication node, a correspondence between the first identifier and the first address, and the first identifier and the second communication node. The second address of the second communication node for transmitting data to and from the first communication node, the first identifier of the first communication node, and the Third associating means for associating with any one of the first addresses, and first data from the second communication node, instead of the second address attached to the first data, Corresponding to this second address First transmission means for transmitting the first identifier with the attached first identifier and the first address to the first communication node.

[0008] Preferably, second receiving means for receiving second data from the first communication node for transmitting data to the second communication node, and receiving data from the first communication node. The second data is appended with the second address associated therewith instead of the first identifier and the first address attached to the second data, and And second transmission means for transmitting to the communication node.

[0009] Preferably, each of the first addresses associated with the first identifier is used for data transmission between the first communication node and the second communication node. Management means for managing whether or not there is, the third association means, the second address of a second communication node that transmits data to and from the first communication node, The first identifier of the first communication node, and the first identifier other than the first address used for data transmission between the first communication node and the second communication node. Correspond to the address of 1 and the shift.

[0010] Preferably, a second identifier is assigned to each of the second communication nodes, and the second associating means includes a first identifier of the first communication node and a first identifier of the first communication node. And the second identifier of the second communication node corresponding to the second communication node.

[0011] Also, the communication system according to the present invention is preferably provided with a first identifier, and transmits data using the first identifier and one or more first addresses. A plurality of first communication nodes, each of which is associated with one of the plurality of first communication nodes, and the associated first communication node between the associated first communication nodes; A plurality of second communication nodes that transmit data using a second address having the same or different system as the first address of the node, and between the first communication node and the second communication node; A transmission device for transmitting data, the transmission device comprising: a first association unit that associates a first identifier of the first communication node with the first address; A first identifier of the first communication node; Second associating means for associating the first communication node with the second communication node; and a first associating means for transmitting data to the first communication node from the second communication node. Receive data The first communication means, the first identifier and the first address, and the first communication based on the association between the first identifier and the second communication node. A third address for associating the second address of the second communication node transmitting data with the node with any one of the first identifier and the first address of the first communication node; Associating means, the first data from the second communication node being replaced with the second address attached to the first data instead of the second address attached to the first data. First transmission means for transmitting to the first communication node with a first identifier and the first address.

Preferably, each of the first communication nodes is a VLAN system or a VPN system, and each of the second communication nodes is a data system for performing data communication with the VLAN system or the VPN system. A data communication device included in a communication system, wherein the first identifier is a tag attached to the VLAN system or the VPN system, respectively, and the first address is the VLAN system or the VPN system. An IP address used in a VPN system, wherein the second address is an IP address used in the data communication system.

Preferably, the data communication system is a mobile communication system capable of performing data communication, and the data communication device is a mobile terminal included in the mobile communication system.

[0014] Further, the transmission method according to the present invention is a communication method, wherein: A transmission method for transmitting data between a plurality of second communication nodes transmitting data in the first communication node, wherein the first communication node is provided with a first identifier, and wherein the first communication node Transmitting data using the first identifier and one or more first addresses in the first communication node, wherein the second communication node transmits the data to the associated first communication node. Transmitting data using a second address that is the same as or different from the first address of the first node, and associating a first identifier of the first communication node with the first address; A first identifier of the first communication node; A step of associating the second communication node that corresponds to the communication node, de to said first communication node Receiving first data from the second communication node for transmitting data, associating the first identifier with a first address, and comparing the first identifier with a second communication node. The second address of a second communication node that transmits data to and from the first communication node, the first identifier of the first communication node, and the Associating the first data from the second communication node with the first address from the second communication node, instead of the second address attached to the first data. Attaching the first identifier and the first address associated with an address and transmitting the first identifier to the first communication node.

[0015] Preferably, receiving the second data of the first communication node transmitting data to the second communication node; and receiving a second data from the first communication node. To the second data, in place of the first identifier and the first address attached to the second data, and the second address associated therewith. Transmitting to the node.

[0016] Further, a program according to the present invention is a program for associating a plurality of first communication nodes with one of the plurality of first communication nodes, and the associated first communication node. A program for transmitting data to and from a plurality of second communication nodes that transmit data in the first communication node, wherein the first communication node is provided with a first identifier, and wherein the first communication node comprises: Data is transmitted using the first identifier and one or more first addresses in the first communication node, and the second communication node transmits the data to the associated first communication node. Transmitting data using a second address having the same system as or different from the first address of the first node, and associating a first identifier of the first communication node with the first address; Attaching a first communication node. A second associating step of associating the second communication node with the second communication node corresponding to the first communication node; and the second communication node transmitting data to the first communication node. A first receiving step of receiving the first data from the first node, associating the first identifier with a first address, and associating the first identifier with a second communication node. The second address of a second communication node transmitting data to and from the first communication node, the first identifier of the first communication node, and the first Map to any of the addresses A third associating step, wherein the first data from the second communication node is associated with the second address instead of the second address attached to the first data. A first transmission step of transmitting to the first communication node with the first identifier and the first address.

According to the present invention, data can be transmitted between a plurality of communication systems whose address systems and communication protocols are not unified.

Brief Description of Drawings

FIG. 1 is a diagram illustrating a configuration of a communication system to which a connection method according to the present invention is applied.

FIG. 2 is a diagram illustrating a configuration of a mobile station, a communication processing device, a base station, an interface device, a gateway device, and a VLAN interface device shown in FIG. 1.

FIG. 3 is a diagram showing a format of a data packet transmitted between the mobile communication system and the gateway device shown in FIG. 1.

FIG. 4 is a diagram showing a format of a data packet transmitted by the VLAN communication system shown in FIG. 1 to a gateway device.

FIG. 5 is a diagram showing a configuration of a gateway program that operates in the gateway device shown in FIG. 1.

6 is a chart exemplifying user IP management information stored and managed in a user IP database by a user IP management unit shown in FIG. 5.

FIG. 7 is a chart exemplifying an IP management table stored and managed in an IP management table by the tag / IP management unit shown in FIG. 5;

FIG. 8 is a first communication sequence diagram showing normal data transmission (S10) in a communication system (such as FIG. 1).

FIG. 9 is a second communication sequence diagram showing a normal data transmission (S20) in the communication system (such as FIG. 1).

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described.

[0020] [Communication system 1] FIG. 1 is a diagram illustrating a configuration of a communication system 1 to which a connection method according to the present invention is applied.

As shown in FIG. 1, a communication system 1 includes a mobile communication system 2 and a VLAN (Virtual LAN) communication system 3 (first communication node) connected via a gateway device (GW) 4 (transmission device). It is composed.

The mobile communication system 2 includes a mobile communication network 20 and mobile stations 22-1 22-m (second communication nodes). The mobile communication network 20 includes a base station 204-1 204_n, The device 202 and the interface device (IF) 206 are connected and configured via a network 200 such as a dedicated communication line.

[0021] The VLAN communication system 3 includes a VLAN interface device 34-134-p (m, n, and p are integers equal to or greater than 2) and a user system 30-130-p, and a LAN (Local Area Network), WAN ( It is configured by being connected via a VLAN network 32 such as a Wide Area Network or the Internet.

In the communication system 1, the mobile communication system 2 and the VLAN communication system 3 have different communication protocols, and each of the mobile communication system 2 and the user system 30 can use an IP address according to a unique system.

In the communication system 1, data transmission between the mobile communication system 2 and the VLAN communication system 3 is realized by these components.

[0022] In the following, when any of a plurality of components such as the mobile station 22-1-1 22-m is indicated without being specified, it may be simply referred to as the mobile station 22 or the like.

In the communication system 1, components such as the mobile station 22 that performs data transmission are referred to as communication nodes.

In addition, the VLAN network 32 may transmit data using a VLAN protocol, a VPN (Virtual Private Network) or a protocol similar to these, but the description will be concretely described. A specific example is a case where the network 32 transmits data according to a VLAN protocol.

[0023] Re, one-ware configuration]

FIG. 2 shows the mobile station 22, the communication processing unit 202, the base station 204, and the interface shown in FIG. FIG. 3 is a diagram exemplifying configurations of a network device 206, a gateway device 4 and a VLAN interface device 34.

As shown in FIG. 2, a mobile station 22, a communication processing device 202, a base station 204, an interface device 206, a gateway device 4 and a VLAN interface device 34 are a computer 10 comprising a CPU 100, a memory 102, and their peripheral circuits. And a wireless communication device 104, a recording device 106, a display / input device 110, a wired communication device 112, and the like, which are added to the computer 10 as necessary.

In other words, the mobile station 22, the communication processing device 202, the base station 204, the interface device 206, the gateway device 4, and the VLAN interface device 34 are controlled by the computer 10 that executes programs for realizing the respective functions, and It is composed of components that realize each function.

[0024] In the mobile station 22 and the base station 204, the wireless communication device 104 transmits data via a wireless communication line.

The display 'input device 110 includes a device required for each component among input / output devices such as a keyboard, a numeric keypad, a display device, and a mouse. The wired communication device 112 transmits data to another node via the network 200 or the like.

The recording device 106 is a CD device, an HDD device, or the like, and records and reproduces data on and from the recording medium 108.

[Mobile Communication System 2]

In the mobile communication system 2, for example, data communication by a mobile phone is performed. In the mobile communication system 2, the mobile stations 22-1 to 22-m are, for example, mobile phones having a data communication function. Corresponds to one of the user systems 30-1 30-p.

The mobile station 22 transmits data to the associated user system 30 via the mobile communication network 20 using an IP address according to the system in the mobile communication system 2. The mobile station 22 is identified in the mobile communication system 2 by an identifier, a telephone number, and the like (second identifier) uniquely assigned to each.

[0026] Base station 204 outputs data received from mobile station 22 via a wireless communication line to network 200.

Further, the base station 204 transmits the data input from the network 200 to the mobile station 22 via a wireless line.

The communication processing device 202 is also called, for example, a RADIUS proxy or the like, and performs communication required for data transmission in the mobile communication system 2, such as RADIUS (Remote Authentication DiaHn User Service) authentication with the mobile station 22. Perform processing.

Further, the communication processing device 202 transmits information (such as the IP address of the mobile station 22 and the identifier “telephone number”) necessary for communication control between the VLAN communication system 3 and the gateway device 4.

The interface device 206 transmits data transmitted from the mobile station 22 via the mobile communication network 20 to the VLAN communication system 3 via the gateway device 4.

Further, the interface device 206 transmits the data transmitted from the VLAN communication system 3 via the gateway device 4 to the mobile station 22 via the mobile communication network 20.

FIG. 3 is a diagram showing a format of a data packet transmitted between the mobile communication system 2 shown in FIG.

As shown in FIG. 3, between the mobile communication system 2 and the gateway device 4, a destination MAC (Media Access Control) address indicating a data destination, a source MAC address indicating a data source, and an Ether type An IP header including the IP address (second address) of the mobile station 22 according to the system in the mobile communication system 2 is added to the data body (pay port) and transmitted.

[0029] [VLAN communication system 3]

In the VLAN communication system 3, the user system 30 transmits data using a VLAN communication protocol by using a unique VLAN tag. The VLAN interface device 34—1—34—p transmits the data transmitted from the user system 30—1—30— through the VLAN network 32 to the mobile communication system 2 through the gateway device 4. .

Also, the VLAN interface devices 34—1—34—p transmit the data sent from the mobile communication system 2 through the gateway device 4 to the user systems 30—1 30—p through the VLAN network 32. Transmit.

FIG. 4 is a diagram showing a format of a data packet transmitted by the VLAN communication system 3 shown in FIG.

As shown in FIG. 4, between the VLAN communication system 3 and the gateway device 4, the destination MAC address, the source MAC address, and the frame type (in FIG. 4, 0x8100 (meaning VLA N tagging (IEEE802.1Q))) , User system 30-1 30_p VLAN tag indicating Ether_type, Ether type, and IP header power including the IP address (first address) according to the scheme in each user system 30-1-30_p attached to the payload It is transmitted.

[0031] [Gateway device 4 / Gateway program 40]

FIG. 5 is a diagram showing a configuration of the gateway program 40 that operates in the gateway device 4 shown in FIG.

As shown in FIG. 5, the gateway program 40 includes a communication processing unit 400, a tag management unit 402, an IP management table 404, a user IP management unit 406, a user IP database (DB) 408, a first and a second It comprises transmission processing units 42 and 44.

[0032] The first transmission processing unit 42 that processes data transmitted in the direction from the mobile communication system 2 to the VLAN communication system 3 includes a reception unit 420, a packet disassembly unit 422, a tag addition / ΙΡ conversion unit 424. , A packet assembling unit 426 and a transmitting unit 428.

The second transmission processing unit 44 that processes data transmitted from the VLAN communication system 3 to the mobile communication system 2 includes a reception unit 440, a packet disassembly unit 442, a tag deletion / ΙΡ conversion unit 444, and a packet assembly unit 446. And a transmission unit 448.

The gateway program 40 is, for example, supplied to the gateway device 4 via a recording medium 108 (FIG. 2), loaded into the memory 102, and executed. The gateway program 40 receives the data shown in FIG. 3 from the mobile station 22 of the mobile communication system 2 via the mobile communication network 20 by using these components, and sends the data to the mobile station 22. The VLAN tag of the corresponding user system 30 is added, and the IP address is converted into an IP address according to the system of the user system 30 and is transmitted to the user system 30 as data shown in FIG.

Also, the gateway program 40 receives the data shown in FIG. 4 from the user system 30 by these components, deletes the VLAN tag, and changes the IP address of the mobile station 22 corresponding to the user system 30 to the IP address. The address is converted to the data shown in FIG. 3 and transmitted to the mobile station 22 of the mobile communication system 2.

The communication processing unit 400 processes information included in a payload of a data packet transmitted from the communication processing device 202 (FIG. 1) of the mobile communication network 20 and the user system 30 to the gateway device 4, Perform communication processing.

That is, the communication processing unit 400 performs processing such as transmission of information necessary for communication processing between the communication processing device 202 of the mobile communication network 20 (FIG. 1) and the user system 30. Processing a RADIUS access request

Supports (Access-Request) and (Access-Response) packet data analysis processing. In this process, when the mobile starts communication, it obtains its own IP address each time through a PPP connection similar to dial-up to the Internet, and the mobile receives the access destination (user system 30). Required to be certified by

FIG. 6 is a chart exemplifying user IP management information stored and managed in the user IP management unit 406 shown in FIG.

The user IP management unit 406 (first associating means 'management means') controls the user system 30- 1 30_p (Depending on the configuration of the user IP management information and the IP management table (described later with reference to Fig. 7), the VLAN tag of the user system 30-1-30_p may be used.) The IP address according to the system in each of the user systems 30-1 to 30-p that can be used for data transmission to and from the system 2 is Prior to data transmission, make correspondence in advance.

As shown in FIG. 6, the user IP management unit 406 associates the IP addresses associated with the user system 30 in advance with the status (in use / unused) of whether or not each of these IP addresses is used. Then, user IP management information is created, stored in the user IP database 408, and managed.

FIG. 7 is a chart exemplifying an IP management table stored and managed in the IP management table 404 by the tag management unit 402 shown in FIG.

The tag management unit 402 (second associating means and third associating means) includes, as shown on the left side of FIG. 7, an identifier indicating the mobile station 22-1-1 22-m, a telephone number (MSISDN (MSISDN ( Mobile Station Integrated Services Digital Network) For example, the MSISDN number means the mobile station's telephone number) and one of the VLAN tags of the user systems 30_1 and 30_p (the user IP management information and IP management) Depending on the configuration of the table, the user system 30 itself may be associated).

[0037] Further, when data transmission is performed between the mobile station 22 and the user system 30, the tag / ΙΡ management unit 402 refers to the user IP management information (FIG. 6) via the user IP management unit 406. Then, at that time, the user selects the information used for data transmission, the information, or the IP address of the user system 30, and as shown on the right side of FIG. 7, the identifier 'telephone number (MSISDN) The IP address used by the mobile station 22 for data transmission and the IP address of the selected user system 30 are associated with the VLAN tag and the VLAN tag, and stored in the tag / ΙΡ management unit 402.

[0038] With the above processing, the tag management unit 402 is required to convert an IP address for transmitting data between the mobile station 22 and the user system 30, and to delete and add a VLAN tag. The IP address of the mobile station 22, the IP address of the user system 30, and the VLAN tag of the user system 30 are associated with each other and used for other components of the gateway program 40.

When the transmission of the IP address data of the user system 30 and the mobile station 22 ends, the tag / IP management unit 402 deletes those IP addresses that are no longer used for data transmission from the IP management table.

[0039] In the first transmission processing unit 42, the reception unit 420 transmits the data transmitted from the mobile communication system 2. The packet of the received data (FIG. 3) is received and output to the packet decomposer 422. The packet decomposing unit 422 decomposes the received data packet into components such as a destination MAC address.

[0040] The tag addition / ΙΡ conversion unit 424 refers to the IP management table shown in FIG. 7 via the tag / ΙΡ management unit 402, and obtains the IP address of the mobile station 22 obtained as a result of the disassembly. It is converted to the IP address of the user system 30 corresponding to the IP address.

The tag addition / IP conversion unit 424 adds the VLAN tag of the user system 30 corresponding to the IP address of the mobile station 22 as a component of the data packet by referring to the IP management table.

The packet assembling unit 426 includes a destination MAC address and a source MAC address input from the tag addition / IP conversion unit 424, an IP address obtained as a result of the conversion, an added VLAN tag, and a payload. Into the data packet shown in FIG.

The transmitting unit 428 sends the packet assembled by the packet assembling unit 426 to the VLAN interface device 34—1—34—p (user system 30—1—30—p) corresponding to the VLAN tag. Send.

In the second transmission processing unit 44, the receiving unit 440 receives a packet of data (FIG. 4) transmitted from the user system 30, and outputs the packet to the packet decomposing unit 442.

The packet decomposing unit 442 decomposes the received data packet into components such as a destination MAC address.

The tag deletion / 削除 conversion unit 444 refers to the IP management table shown in FIG. 7 via the tag / ΙΡ management unit 402 and converts the IP address of the user system 30 obtained as a result of the disassembly into this. It is converted to the IP address of the mobile station 22 corresponding to the IP address.

In addition, the tagged caro-IP converter 444 deletes the VLAN tag of the user system 30 as a component of the data packet.

[0044] The packet assembling unit 446 converts the destination MAC address, the source MAC address, the Ether type, the IP address obtained as a result of the conversion, and the payload input from the tag deletion / IP conversion unit 444. And assembled into the data packet shown in FIG.

The transmitting unit 448 sends the packet assembled by the packet assembling unit 446 to the interface. To the mobile device 206 (mobile station 22).

[Overall Operation of Communication System 1]

Hereinafter, the overall operation of the communication system 1 will be described.

FIG. 8 is a first communication sequence diagram illustrating normal data transmission (S10) in the communication system 1 (such as FIG. 1).

FIG. 8 illustrates a case where the mobile station 22 accesses the user system 30 side.

As shown in FIG. 8, in step SIOO (SIOO), when the mobile station 22 requests the mobile communication network 20 to access the corresponding user system 30, the mobile station 22 The communication processing device 202 performs authentication processing of the mobile station 22 and the like.

In step 102 (S 102), the communication processing device 202 sends the gateway device 4 processing of the gateway program 40 (FIG. 5) such as the identifier of the mobile station 22, the telephone number (MSISDN) and the IP address. Send an access request containing the required information.

The tag management unit 402 refers to the user IP management information (FIG. 6), and as shown in FIG. 7, the VLAN tag of the user system 30 and the IP address of the user system 30 which are not used at that time. And the IP address of the mobile station 22.

The user IP management unit 406 changes the IP address (FIG. 6) of the user system 30 to a state where the user system 30 is in a vacant state.

In step 104 (S104), the communication processing section 400 of the gateway program 40 transmits an access request to the user system 30.

In step 106 (S106), the user system 30 returns an ACK (Acknowledge) to the gateway program 40 (FIG. 5) of the gateway device 4.

In step 108 (S108), the communication processing unit 400 of the gateway program 40 returns an ACK to the communication processing device 202 of the mobile communication network 20.

In step 110 (S110), the communication processing device 202 of the mobile communication network 20 returns an ACK to the mobile station 22.

At step 114 (S114), data is transmitted bidirectionally between the mobile station 22 and the user system 30. At this time, the first transmission processing unit 42 of the gateway program 40 (FIG. 5) converts the IP address and adds the VLAN tag to the data packet (FIG. 3) received from the mobile station 22, The data packet is transmitted to the user system 30 as shown in FIG.

Conversely, the second transmission processing unit 44 converts the IP address and deletes the VLAN tag of the data packet (FIG. 4) received from the user system 30 and moves the data packet as the data packet shown in FIG. Send to station 22.

[0049] In step 118 (S118), the tag management unit 402 of the gateway program 40 uses a timer to generate an IP management table reference process accompanying data transmission from the mobile station 22 and the user system 30. When there is no reference processing for the IP addresses of the mobile station 22 and the user system 30 for a certain period of time, these IP addresses are deleted from the IP management table 404 (FIG. 7). At this time, the user IP management unit 406 of the gateway program 40 changes the IP address (FIG. 6) of the user system 30 used for the terminated data from an in-use state to an empty state.

Next, an operation of the communication system 1 when the user system 30 accesses the mobile station 22 from the user system 30 will be described with reference to FIG.

FIG. 9 is a second communication sequence diagram illustrating normal data transmission (S20) in the communication system 1 (such as FIG. 1).

In the communication sequence shown in FIG. 9, those substantially the same as the communication sequence shown in FIG. 8 are denoted by the same reference numerals.

As shown in FIG. 9, in step 200 (S 200), the user system 30 sends information (mobile station) necessary for communication processing to the gateway program 40 (FIG. 5) of the gateway device 4. 22. An access request to the mobile station 22 including the telephone number (MSISDN); FIG. 7) is issued.

In step 202 (S202), the communication processing unit 400 of the gateway program 40 transmits information necessary for data transmission between the mobile station 22 and the user system 30 to and from the communication processing device 202 of the mobile communication network 20. Performs necessary processing for access requests, such as transmission of the IP address of the mobile station 22).

The tag management unit 402 refers to the user IP management information (FIG. 6) and, as shown in FIG. The VLAN tag of the first system 30, the IP address of the user system 30 which is not used at that time, and the IP address of the mobile station 22 are associated with each other and stored and managed in the IP management table 404.

In step 204 (S204), the communication processing device 202 (FIG. 1) of the mobile communication network 20 performs a process required for an access request with the mobile station 22.

In step 206 (S206), the communication processing device 202 of the mobile communication network 20 returns an ACK to the gateway device 4.

In step 208 (S208), the communication processing unit 400 of the gateway program 40 (FIG. 5) returns an ACK to the user system 30.

Hereinafter, as in the case shown in FIG. 8, data is transmitted between mobile station 22 and user system 30.

After that, when the data transmission is completed, the contents of the IP management table (FIG. 7) are restored, and the IP address of the user IP management information (FIG. 6) is returned from the used state to the empty state. Industrial applicability

The present invention can be used for data transmission between a plurality of communication systems whose address systems and communication protocols are not unified.

Claims

The scope of the claims

[1] A plurality of first communication nodes, and a plurality of second communication nodes associated with one of the plurality of first communication nodes and transmitting data between the associated first communication nodes. A transmission device for transmitting data to and from a plurality of communication nodes, wherein the first communication node is provided with a first identifier, and wherein the first communication node comprises: Transmitting data using the one or more first addresses at the first communication node, wherein the second communication node is configured to communicate with the first address of the associated first communication node; Transmits data using the same or a different second address,

First associating means for associating the first communication node with the first address; a first identifier of the first communication node; and a second identifier corresponding to the first communication node. Second associating means for associating with the communication node;

First receiving means for receiving first data from the second communication node transmitting data to the first communication node;

Data is exchanged between the first communication node and the first communication node based on the association between the first communication node and the first address and the association between the first identifier and the second communication node. Third associating means for associating the second address of the second communication node to be transmitted with any of the first identifier and the first address of the first communication node; and The first data from the second communication node may be replaced with the first identifier and the first identifier associated with the second address instead of the second address attached to the first data. And a first transmission means for transmitting to the first communication node

A transmission device having:

[2] _second receiving means for receiving second data from the first communication node transmitting data to the _second communication node, and second data from the first communication node In place of the first identifier and the first address attached to the second data, the second address associated therewith is assigned to the second communication node. Second transmission means for transmitting

2. The transmission device according to claim 1, further comprising:

[3] It is determined whether each of the first addresses associated with the first communication node is used for data transmission between the first communication node and the second communication node. Management means to manage

Further having

The third associating means includes: the second address of a second communication node that transmits data to and from the first communication node; the first identifier of the first communication node; And associating any one of the first addresses other than the first address used for data transmission between the first communication node and the second communication node. The transmission device according to claim 1.

[4] A second identifier is assigned to each of the second communication nodes,

The second associating unit associates a first identifier of the first communication node with the second identifier of the second communication node corresponding to the first communication node. The transmission device according to claim 1.

[5] a plurality of first communication nodes each provided with a first identifier and transmitting data using the first identifier and one or more first addresses;

Each of the plurality of first communication nodes is associated with one of the plurality of first communication nodes, and the first address and the system of the associated first communication node are associated with the associated first communication node. A plurality of second communication nodes transmitting data using the same or different second addresses;

A transmission device for transmitting data between the first communication node and the second communication node; and

A transmission system having

The transmission device,

First receiving means for receiving first data from the second communication node transmitting data to the first communication node; Data is exchanged between the first communication node and the first communication node based on the association between the first communication node and the first address and the association between the first identifier and the second communication node. Third associating means for associating the second address of the second communication node to be transmitted with any of the first identifier and the first address of the first communication node; and The first data from the second communication node may be replaced with the first identifier and the first identifier associated with the second address instead of the second address attached to the first data. And a first transmission means for transmitting to the first communication node

Having

Transmission system.

[6] The transmission device,

Second receiving means for receiving second data from the first communication node transmitting data to the second communication node;

In the second data from the first communication node, instead of the first identifier and the first address attached to the second data, the second address associated therewith is used. And second transmission means for transmitting to the second communication node.

The transmission system according to claim 5, wherein:

[7] The transmission device,

Management for managing whether each of the first addresses associated with the first communication node is used for data transmission between the first communication node and the second communication node Means

Further having

The third associating means includes: the second address of a second communication node that transmits data to and from the first communication node; the first identifier of the first communication node; And associating any one of the first addresses other than the first address used for data transmission between the first communication node and the second communication node. Transmission system according to paragraph 5.

[8] A second identifier is assigned to each of the second communication nodes,

The second associating unit associates a first identifier of the first communication node with the second identifier of the second communication node corresponding to the first communication node. Transmission system according to item 5.

[9] Each of the first communication nodes is a VLAN system or a VPN system, and each of the second communication nodes is included in a data communication system that performs data communication with the VLAN system or the VPN system. The first identifier is a tag attached to each of the VLAN system or the VPN system,

The first address is an IP address used in the VLAN system or the VPN system,

The second address is an IP address used in the data communication system

The transmission system according to claim 5, wherein:

10. The transmission according to claim 9, wherein the data communication system is a mobile communication system capable of performing data communication, and the data communication device is a mobile terminal included in the mobile communication system. system.

[11] A plurality of first communication nodes and a plurality of second communication nodes associated with one of the plurality of first communication nodes and transmitting data between the associated first communication nodes. A transmission method for transmitting data to and from a plurality of communication nodes, wherein the first communication node is provided with a first identifier, and wherein the first communication node comprises: Transmitting data using the one or more first addresses at the first communication node, wherein the second communication node is configured to communicate with the first address of the associated first communication node; Transmits data using the same or a different second address,

Associating the first communication node with the first address; associating a first identifier of the first communication node with the second communication node corresponding to the first communication node Steps and

A first communication node from the second communication node transmitting data to the first communication node; Receiving data;

Data is exchanged between the first communication node and the first communication node based on the association between the first communication node and the first address and the association between the first identifier and the second communication node. Associating the second address of the second communication node to be transmitted with the power of the first identifier and the first address of the first communication node;

In place of the second address attached to the first data, the first identifier associated with the second address and the first identifier are added to the first data from the second communication node. And transmitting to the first communication node with the address of 1.

[12] receiving second data from the first communication node transmitting data to the second communication node;

In the second data from the first communication node, instead of the first identifier and the first address attached to the second data, the second address associated therewith is used. Transmitting to the second communication node.

12. The transmission method according to claim 11, further comprising:

[13] A plurality of first communication nodes, and a plurality of second communication nodes associated with one of the plurality of first communication nodes and transmitting data between the associated first communication nodes. A program for transmitting data to and from a plurality of communication nodes, wherein the first communication node is provided with a first identifier, and wherein the first communication node includes the first identifier and the Transmitting data using one or more first addresses at a first communication node, wherein the second communication node is configured to communicate with the first address of the associated first communication node; Transmitting data using the same or a different second address,

A first association step of associating the first communication node with the first address;

A second association step of associating a first identifier of the first communication node with the second communication node corresponding to the first communication node;

A first receiving step of receiving first data from the second communication node transmitting data to the first communication node; Data is transmitted to and from the first communication node based on the association between the first identifier and the first address and the association between the first identifier and the second communication node. A third associating step of associating the second address of the second communication node with the first identifier of the first communication node and the power ^ of the first address; and the second communication The first identifier from the node and the first address associated with the second address are appended to the first data from the node instead of the second address attached to the first data. A first transmission step for transmitting to the first communication node

A program that causes a computer to execute.

[14] a second receiving step of receiving second data from the first communication node transmitting data to the second communication node;

In the second data from the first communication node, instead of the first identifier and the first address attached to the second data, the second address associated therewith is used. 14. The program according to claim 13, further comprising: causing a computer to further execute a second transmission step of transmitting to said second communication node.

[15] It is determined whether or not each of the first addresses associated with the first identifier is used for data transmission between the first communication node and the second communication node. Management steps to manage

And let the computer run

The third associating step includes: transmitting the data to and from the first communication node; the second address of a second communication node; the first identifier of the first communication node; and The first address other than the first address is used for data transmission between the first communication node and the second communication node. To

The program according to claim 13.

[16] A second identifier is assigned to each of the second communication nodes,

The second associating step associates a first identifier of the first communication node with the second identifier of the second communication node corresponding to the first communication node. The program according to claim 13.

Each of the first communication nodes is a VLAN system or a VPN system, and each of the second communication nodes is a data communication system included in a data communication system that performs data communication with the VLAN system or the VPN system. The device, wherein the first identifier is a tag attached to each of the VLAN system or the VPN system,

The first address is an IP address used in the VLAN system or the VPN,

The second address is an IP address used in the data communication system

The program according to claim 13.