WO2016120983A1 - Country identification information adding device, country identification information adding method, and program - Google Patents

Abstract

A country identification information acquiring unit (601) receives a carrier code of a carrier of a portable telephone network, and acquires, as country identification information, a code indicating a country to which the carrier belongs from the received carrier code. A country identification information adding unit (602) adds, to a packet, the country identification information acquired by the country identification information acquiring unit (601). A communication unit (604) transmits the packet to which the country identification information is added by the country identification information adding unit (602).

Description

Country identification information addition apparatus, country identification information addition method, and program

The present invention relates to packet transmission / reception.

Assume a system in which monitoring centers collect information on devices installed in multiple countries via a network.
In addition, it is assumed that communication between the device and the monitoring center is performed using TCP (Transmission Control Protocol) or UDP (User Datagram Protocol).
In this system, in order to change the processing in the monitoring center according to the country in which the device is installed, it is necessary to identify from which country the packet received by the monitoring center is transmitted.

As a method of identifying the country of transmission of a packet, a method of confirming the source IP (Internet Protocol) address of the packet, specifying the country from global IP address assignment information, and identifying the country of transmission of the packet (for example, Patent Document 1) )It has been known.
However, when a closed network service provided by a telecommunications carrier is used for communication between the monitoring center and the device, a global IP address is not assigned to the device, and thus the country of origin cannot be specified by the source IP address.
As another means, a method is conceivable in which country identification information is set in a device when the device is installed, and the device adds the country identification information to a packet and transmits the packet.
However, in this method, setting work to the device occurs, so that an increase in setting load and a setting error become problems.
A method is also conceivable in which a device acquires position information using GPS (Global Positioning System) and attaches the acquired position information to a packet for transmission. However, in countries where GPS information is restricted from being transmitted overseas. This method cannot be used.

JP 2007-104509 A

The present invention has been made in view of the above circumstances, and does not depend on the IP address and the GPS system, and can make it possible to identify the packet transmission country without any prior setting work on the device. The main purpose is to provide

The country identification information adding device according to the present invention is:
A country identification information acquisition unit that receives a communication carrier code of a carrier of a mobile phone network and acquires, as country identification information, a code representing a country to which the communication carrier belongs from the received communication carrier code;
A country identification information addition unit for adding the country identification information acquired by the country identification information acquisition unit to a packet;
A communication unit that transmits the packet with the country identification information added by the country identification information addition unit.

In the present invention, a carrier code of a carrier of the mobile phone network is received, and a code representing a country to which the carrier belongs in the received carrier code is added to the packet as country identification information.
For this reason, it is possible to identify the packet transmission country without depending on the IP address and the GPS system, and without prior setting work on the device.

1 is a diagram illustrating a configuration example of a device remote monitoring system according to a first embodiment. The figure which shows the function structural example of the country identification information addition apparatus which concerns on Embodiment 1. FIG. FIG. 3 is a diagram illustrating a functional configuration example of a country identification device according to the first embodiment. FIG. 4 is a flowchart showing an operation example of the country identification information adding device according to the first embodiment. FIG. 4 is a flowchart showing an operation example of the country identification information adding device according to the first embodiment. FIG. 3 shows an example of a port number correspondence table according to the first embodiment. FIG. 4 shows an example of a port number after rewriting according to the first embodiment. The figure which shows the example of the destination IP address of the packet which concerns on Embodiment 1, a destination port number, a transmission source IP address, and a transmission source port number. FIG. 6 shows an example of a port number correspondence table when a response packet is received according to the first embodiment. The figure which shows the example of the destination IP address of the packet which concerns on Embodiment 1, a destination port number, a transmission source IP address, and a transmission source port number. FIG. 4 is a flowchart showing an operation example of the country identification device according to the first embodiment. FIG. 4 is a diagram showing an example of a transfer destination information table according to the first embodiment. FIG. 4 is a flowchart showing an operation example of the country identification information adding device according to the first embodiment. FIG. 4 is a diagram illustrating an example of a destination IP address, a destination port number, a source IP address, and a source port number of a response packet according to the first embodiment. FIG. 6 shows an example of a port number after rewriting according to the second embodiment. FIG. 6 shows an example of a port number after rewriting according to the second embodiment. FIG. 6 shows a configuration example of a device according to Embodiment 3. FIG. 6 shows a configuration example of a device according to Embodiment 3. The flowchart figure which shows the operation example of the country identification information addition apparatus which concerns on Embodiment 4. FIG. The figure which shows the example of the area | region to which the country identification information which concerns on Embodiment 4 is added. FIG. 10 is a flowchart showing an operation example of the country identification device according to the fourth embodiment. FIG. 10 is a diagram illustrating a configuration example of a device remote monitoring system according to a fifth embodiment. FIG. 6 is a diagram showing a hardware configuration example of a country identification information adding device according to the first to fifth embodiments. The figure which shows the structural example of a general apparatus remote monitoring system.

Embodiment 1 FIG.
*** Explanation of configuration ***
FIG. 24 shows a configuration example of a general device remote monitoring system.
The device 100 is installed in, for example, a factory, collects information on devices in the factory, and transmits the collected information to the center device 400 by IP communication.
Various measuring devices, sensors, and the like are connected under the device 100, but the description of these devices is omitted in FIG.
As shown in FIG. 24, in the device remote monitoring system, the device 100 is installed across a plurality of countries.
The center device 400 collects information from the device 100 and issues a control command to the device.
The center device 400 is installed in one monitoring center.
The cellular phone network 500 is a packet switching network that connects the device 100 and the monitoring center.
Although not shown, the mobile phone network 500 is connected to the monitoring center via the Internet.
In FIG. 24, the communication apparatuses 200 in countries A, B, and C are illustrated as wirelessly connected to one mobile phone network 500. In reality, however, mobile phones are provided for each country. A net 500 is provided.
The communication device 200 is installed between the device 100 and the mobile phone network 500.
The communication device 300 is installed between the center device 400 and the mobile phone network 500.
The communication apparatus 200 connects to the mobile phone network 500, transfers the packet from the device 100 to the mobile phone network 500, and transfers the packet sent from the mobile phone network 500 to the device 100 to the device 100. Perform the process.
The communication device 300 is sent to the mobile phone network 500 via the Internet, the processing for transferring a packet from the center device 400 to the mobile phone network 500, and the mobile device 500 sent to the center device 400. A process of transferring the packet to the center apparatus 400 is performed.

FIG. 1 shows a configuration of a device remote monitoring system according to the present embodiment.
In FIG. 1, in addition to the configuration of FIG. 24, a country identification information adding device 600 is installed between the device 100 and the communication device 200, and the country identification device 700 is installed between the center device 400 and the communication device 300 of the monitoring center. is set up.
In addition, a plurality of center devices 400a to 400c are installed in the monitoring center in order to distribute the center devices 400 that perform processing according to the packet transmission country.
Center device 400a processes a packet from country A, center device 400b processes a packet from country B, and center device 400c processes a packet from country C.

FIG. 2 shows a functional configuration example of the country identification information adding device 600.
The country identification information addition device 600 includes a country identification information acquisition unit 601, a country identification information addition unit 602, a port number correspondence table storage unit 603, and a communication unit 604.

The country identification information acquisition unit 601 receives the telecommunications carrier code of the telecommunications carrier of the mobile phone network 500 from the mobile phone network 500 via the communication unit 604, and determines the country to which the telecommunications carrier belongs from the received telecommunications carrier code. The code to represent is acquired as country identification information.
Then, the country identification information acquisition unit 601 stores the country identification information in a storage area in the country identification information adding device 600.
Note that the telecommunications carrier code is assigned only to the telecommunications carrier of the mobile phone network 500, and other types of networks such as a wired network cannot obtain the same code from the network.
Therefore, the country identification information acquisition unit 601 receives the communication carrier code of the communication carrier of the mobile phone network 500 from the mobile phone network 500.

The country identification information adding unit 602 adds the country identification information acquired by the country identification information acquiring unit 601 to the packet addressed to the center device 400.
More specifically, the country identification information adding unit 602 monitors packets transmitted / received between the device 100 and the center device 400, and transmits TCP / UDP of packets transmitted from the device 100 to the center device 400. Rewrite the original port number field with a number generated from the country identification information.
That is, the country identification information adding unit 602 deletes the transmission source port number from the transmission source port number field of the packet, and transmits the transmission source port number including the country identification information (hereinafter also referred to as country identification information port number). Describe in the port number field.
Further, the country identification information adding unit 602 returns the TCP / UDP destination port number of the packet transmitted from the center apparatus 400 to the device 100 to the port number before rewriting.
That is, the country identification information adding unit 602 deletes the country identification information port number from the destination port number field of the response packet from the center apparatus 400 that is the packet transmission destination, and the original transmission source port number (the port number of the device 100). ) In the destination port number field of the response packet.

The port number correspondence table storage unit 603 stores a port number correspondence table.
The port number correspondence table is generated by the country identification information adding unit 602.
The port number correspondence table is a table that stores information on packets before rewriting and port numbers after rewriting in association with each other.
More specifically, as shown in FIG. 6, the port number correspondence table includes a destination IP address, a destination port number, a source IP address, a source port number, and a port number after rewriting that is a country identification information port number. Is a table shown in association with each other.
If no response packet is transmitted from the center apparatus 400 to the device 100, the country identification information adding apparatus 600 may not include the port number correspondence table storage unit 603 and the port number correspondence table.

The communication unit 604 receives a packet addressed to the center device 400 from the device 100, outputs the received packet to the country identification information adding unit 602, and adds the country identification information to the transmission source port number field by the country identification information adding unit 602. The packet addressed to the center apparatus 400 is transmitted to the communication apparatus 200.
Further, the communication unit 604 receives the response packet returned from the center device 400, outputs the received response packet to the country identification information adding unit 602, and the country identification information adding unit 602 sends the original transmission to the destination port number field. A response packet addressed to the device 100 describing the original port number (port number of the device 100) is transmitted to the device 100.

FIG. 3 shows a functional configuration example of the country identification device 700.

The country identification device 700 includes a country identification unit 701, a packet transfer destination designation unit 702, a transfer destination information table storage unit 703, and a communication unit 704.

The communication unit 704 receives a packet to which country identification information indicating the country of the transmission source is added.
More specifically, the communication unit 704 receives a packet addressed to the center device 400 in which the country identification information port number is described in the transmission source port number field by the country identification information adding device 600, and the received packet is transmitted to the country identification unit. To 701.
Further, the communication unit 704 transfers the packet to the center device 400 designated as the packet transfer destination by the packet transfer destination designation unit 702.
Further, the communication unit 704 receives a response packet from the center device 400 and transmits the received response packet to the device 100.

The country identification unit 701 extracts country identification information from the packet received by the communication unit 704.
That is, the country identification unit 701 monitors packets transmitted / received between the device 100 and the center device 400, and determines the country identification information port number from the transmission source port number field of the packet transmitted from the device 100 to the center device 400. And the country identification information is extracted from the country identification information port number.

The packet transfer destination designation unit 702 selects the center device 400 corresponding to the country identification information extracted by the country identification unit 701 from the center devices 400 provided for each country, and selects the selected center device 400 for the packet. Specify the transfer destination.
The packet transfer destination designation unit 702 refers to the transfer destination information table stored in the transfer destination information table storage unit 703 and designates the packet transfer destination.

The transfer destination information table storage unit 703 stores a transfer destination information table.
In the transfer destination information table, as shown in FIG. 12, the IP address of the center device 400 serving as the transfer destination is described for each country identification information.

*** Explanation of operation ***
The operation of identifying the packet transmission country in this embodiment will be described.
The packet transmission country identification operation consists of the following four steps.
(1) Acquisition of country identification information by the country identification information adding device 600 (2) Transmission of a packet from the device 100 to the center device 400 (3) Identification of a packet transmission country in the country identification device 700 (4) From the center device 400 Transmission of response packet to device The details of each step will be described below.

(1) Acquisition of Country Identification Information by Country Identification Information Adding Device 600 FIG. 4 shows an acquisition flow of country identification information by the country identification information obtaining unit 601 of the country identification information adding device 600.
In S001, the country identification information acquisition unit 601 checks whether the country identification information is stored in the country identification information adding device 600.
If the country identification information is not stored, the process proceeds to S002. If the country identification information is stored, the process ends.
In S002, the country identification information acquisition unit 601 issues an AT command for acquiring a communication carrier code to the communication device 200.
The AT command is a standard command for controlling the communication device 200.
Using the AT command, the country identification information acquisition unit 601 can acquire the communication carrier code of the communication carrier of the communication network to which the communication device 200 is currently connected.
In the configuration of FIG. 2, the country identification information acquisition unit 601 can acquire the communication carrier code of the communication carrier of the mobile phone network 500 from the mobile phone network 500.
The carrier code is an integer value of 5 digits, and the code system is defined by the standardization organization 3GPP (Third Generation Partnership Project).
In S003, if acquisition of the communication carrier code from the communication device 200 is successful, the process proceeds to S004, and if it fails, the process proceeds to S005.
In S004, the country identification information acquisition unit 601 extracts the first three digits of the carrier code acquired in S002, and uses the extracted first three digits as country identification information.
Since the first three digits of the carrier code are defined as a code representing the country, the country can be identified in this part.
In S005, if the communication carrier code has been successfully acquired in S002, the country identification information acquisition unit 601 stores the extracted country identification information in a storage area in the country identification information adding device 600.
If acquisition of the carrier code has failed in S002, the country identification information acquisition unit 601 stores “000” as country identification information that does not apply to any country in the storage area in the country identification information adding device 600. To do.
In addition, when acquisition of a communication carrier code has failed, a process in which the country identification information acquisition unit 601 periodically redoes the procedure after S002 may be added.
S001 to S005 shown in FIG. 4 correspond to country identification information acquisition processing.

(2) Transmission of Packet from Device 100 to Center Device 400 The device 100 transmits a TCP or UDP packet to the center device 400 according to a predefined communication protocol.
At this time, an arbitrary value is set in the TCP or UDP port number of the packet transmitted from the device 100.
All the packets transmitted from the device 100 reach the country identification information adding device 600.
FIG. 5 shows a flow when the country identification information adding device 600 receives a packet transmitted from the device 100 and the country identification information adding unit 602 processes the packet.

In S101, the country identification information adding unit 602 enters an entry in the port number correspondence table (FIG. 6) in which the received packet, the destination IP address, the destination port number, the source IP address, and the source port number match. Check if exists.
If there is a matching entry, the process proceeds to S104. If there is no matching entry, the process proceeds to S102.
In S102, the country identification information adding unit 602 generates a rewritten port number by combining the country identification information stored in S005 and an arbitrary application identification number.
In the present embodiment, the port number after rewriting is an integer of a maximum of 5 digits having the application identification number as the first two digits (however, values from 0 to 64) and the country identification information as the last three digits.
As shown in FIG. 7, when the application identification number is 10 and the country identification information is 440, the port number after rewriting is 10440.
The application identification number is set to an arbitrary value such that a combination of four items other than the transmission source port number in the port number correspondence table does not overlap with other entries.
Assume that a packet having information shown in FIG. 8 is newly received when the port number correspondence table is in the state shown in FIG.
Since this newly received packet is the same as the first entry in the port number correspondence table of FIG. 6 except for the source port number, a value other than 10440 must be set for the port number after rewriting.
Since the last three digits (440) corresponding to the country identification information are fixed, it is necessary to set a value other than 10 to the application identification number.
In S103, the country identification information adding unit 602 adds the rewritten port number generated in S102 and the received packet information to the port number correspondence table.
When the port number correspondence table is in the state shown in FIG. 6, when a packet having the information shown in FIG. 8 is newly received and the port number after rewriting corresponding to the newly received packet is 11440, The port number correspondence table is as shown in FIG.
In S104, the country identification information adding unit 602 rewrites the transmission source port number of the packet with the rewritten port number described in the entry corresponding to the received packet information in the port number correspondence table.
In S <b> 105, the communication unit 604 transfers the packet to the communication device 200.
S101 to S104 in FIG. 5 correspond to country identification information addition processing, and S105 corresponds to communication processing.

(3) Identification of packet transmission country in country identification device 700 All packets transmitted from device 100 to center device 400 pass through country identification device 700.
FIG. 11 shows a flow when the country identification device 700 receives a packet transmitted from the device 100 and whose source port number is rewritten by the country identification information adding device 600 and processes the received packet.

In S201, the country identification unit 701 of the country identification device 700 extracts the last three digits of the transmission source port number of the packet received by the communication unit 704, and uses the extracted last three digits as country identification information.
In S202, the packet transfer destination designation unit 702 of the country identification device 700 acquires the transfer destination IP address corresponding to the country identification information acquired in S201 from the transfer destination information table shown in FIG.
In S203, the packet transfer destination designation unit 702 rewrites the destination IP address of the received packet with the IP address acquired in S202, and the communication unit 704 transfers the packet after the destination IP address is rewritten.

(4) Transmission of Response Packet from Center Device 400 to Device When the packet transmitted from device 100 to center device 400 is a TCP packet, a response packet from center device 400 may be generated.
In TCP, the source port number of the received packet is set as the destination port number and the response packet is transmitted.
For this reason, in the response packet to the packet in which the transmission source port number is rewritten by the country identification information adding device 600, the rewritten port number is designated as the destination port number.
Since the device 100 is not aware of rewriting the port number, communication cannot be performed with the port number after rewriting, and it is necessary to return the destination port number of the response packet to the original port number when the device 100 transmitted.
The country identification information adding unit 602 performs this process using the port number correspondence table.
FIG. 13 shows a processing flow of the country identification information adding unit 602.
Here, the destination IP address, the destination port number, and the source IP address shown in FIG. 14 as a response packet of the packet having the destination IP address, destination port number, source IP address, and source port number shown in FIG. A process when the country identification information adding device 600 receives a response packet having a transmission source port number will be described.
Further, it is assumed that the port number correspondence table when receiving the response packet is in the state shown in FIG.

In S301, the country identification information adding unit 602 searches the port number correspondence table (FIG. 9) for an entry corresponding to the received response packet.
Specifically, the country identification information adding unit 602 includes a source IP address, a port number after rewriting, a destination IP address, and a destination port number, the destination IP address, the destination port number, the source IP address of the received response packet, An entry matching the transmission source port number is searched from the port number correspondence table.
The entry corresponding to the packet in FIG. 14 is the bottom entry in FIG.
It can be seen from the transmission source port number of this entry that the transmission source port number of the packet before rewriting was 11122.
In S302, the country identification information adding unit 602 rewrites the destination port number of the response packet with the port number acquired in S301.
In S <b> 303, the communication unit 604 transfers the packet with the rewritten destination port number to the device 100.
As described above, the country identification information adding unit 602 matches the destination IP address of the response packet with the transmission source IP address in the port number correspondence table, and the destination port number of the response packet matches the country identification information port in the port number correspondence table. The source IP address of the response packet matches the destination IP address in the port number correspondence table, and the source port number of the response packet matches the destination port number in the port number correspondence table. If they match, the port number after rewriting that is the country identification information port number is deleted from the destination port number field of the response packet, and the source port number in the port number correspondence table is described in the destination port number field of the response packet. .

*** Explanation of effects ***
As described above, in the present embodiment, the country identification information adding device receives the communication carrier code of the mobile phone network carrier, and represents the country to which the communication carrier in the received carrier carrier code belongs. The code is added to the packet as country identification information.
For this reason, it is possible to notify the monitoring center of the packet transmission country without depending on the IP address and the GPS system, and without any prior setting work for the device.
In this embodiment, the country identification information adding device adds the country identification information port number to the transmission source port number field of the packet, so that the data format of the communication protocol used between the device and the center device is changed. The packet sending country can be notified to the monitoring center without correction.

Embodiment 2. FIG.
In S102 of FIG. 5 of the first embodiment, the 2-digit application identification number and the 3-digit country identification information are concatenated to obtain the port number after rewriting.
In this embodiment, a method for generating a port number after rewriting other than that will be described.
Except for the method of generating the port number after rewriting, it is the same as in the first embodiment.

Since the country identification information is a 3-digit integer, it fits in 10 bits.
Since the transmission source port number is a 16-bit field, in this embodiment, the country identification information adding unit 602 uses the remaining 6 bits as the application identification number as shown in FIG.
Then, the country identification information adding unit 602 combines the 10-bit country identification information and the 6-bit application identification number as the port number after rewriting.
The country identification information is a three-digit integer, but the number of countries is 256 or less.
Using this, the country identification information adding unit 602 defines a conversion table for converting the country identification information into 8-bit data, and represents the country identification information with 8 bits, as shown in FIG. The bit may be an application identification number.
In addition to the method specifically shown here, any method that can generate a unique port number after rewriting from the country identification information and the application identification number can be used.

Embodiment 3 FIG.
In the first embodiment and the second embodiment, the case where the device 100, the country identification information adding device 600, and the communication device 200 are separate hardware has been described.
On the other hand, as shown in FIG. 17, the function of the country identification information adding device 600 and the function of the communication device 200 may be provided in one piece of hardware.
The communication unit 604 in FIG. 17 performs the same operation as that of the communication apparatus 200 according to the first embodiment.
Further, as shown in FIG. 18, only the communication device 200 may be different hardware.
Other combinations of functions and hardware may be used.
The hardware configuration of the device 100, the country identification information adding device 600, and the communication device 200 is the same as that of the first embodiment.

Embodiment 4 FIG.
In the first embodiment, the method of embedding country identification information in the port number field of the packet is shown.
In the present embodiment, a method of inserting country identification information into an arbitrary area in a packet instead of the port number field is shown.
Also in the present embodiment, the configuration example of the device remote monitoring system is as shown in FIG. 1, the functional configuration example of the country identification information adding device 600 is as shown in FIG. An example is as shown in FIG.

The operation of identifying the packet transmission country according to this embodiment will be described.
Similar to the first embodiment, the operation for identifying the packet transmission country according to the present embodiment is largely composed of the following four steps.
(1) Acquisition of country identification information by the country identification information adding device 600 (2) Transmission of a packet from the device 100 to the center device 400 (3) Identification of a packet transmission country in the country identification device 700 (4) From the center device 400 Transmission of response packet to device 100

(1) Acquisition of country identification information by country identification information adding device 600 Since this is the same as in the first embodiment, description thereof is omitted.

(2) Transmission of Packet from Device 100 to Center Device 400 The device 100 transmits a TCP or UDP packet to the center device 400 according to a predefined communication protocol.
All the packets transmitted from the device 100 reach the country identification information adding device 600.
FIG. 19 shows a flow when the country identification information adding device 600 receives a packet transmitted from the device 100 and the country identification information adding unit 602 processes the packet.
In S401, the country identification information adding unit 602 inserts the country identification information in a predetermined area of the received packet.
In this embodiment, as shown in FIG. 20, the country identification information adding unit 602 adds a 16-bit area between the header area and the data area of the TCP or UDP packet, and the country is added to the 16-bit area. Insert identification information.
Other methods may be used for the country identification information insertion position and the size and format of the area.
In S <b> 402, the communication unit 604 transfers the packet with the country identification information added to the communication device 200.

(3) Identification of packet transmission country by country identification device All packets transmitted from the device 100 to the center device 400 pass through the country identification device 700.
FIG. 21 shows a flow when the country identification device 700 receives a packet transmitted from the device 100 and after country identification information is inserted by the country identification information adding device 600, and processes the received packet.
In step S501, the country identification unit 701 of the country identification device extracts 16 bits immediately after the header area of the received packet, and recognizes the extracted 16 bits as country identification information.
In S502, the packet transfer destination designation unit 702 of the country identification device acquires a transfer destination IP address corresponding to the country identification information acquired in S501 from the transfer destination information table.
In S503, the packet transfer destination designation unit 702 rewrites the destination IP address of the received packet with the transfer destination IP address acquired in S502, deletes the region of the country identification information from the packet, and the communication unit 704 transfers the packet to the transfer destination. Are transferred to the center device 400.

(4) Transmission of Response Packet from Center Device 400 to Device 100 Both the country identification device 700 and the country identification information addition device 600 perform any processing on the packet transmitted from the center device 400 to the device 100. Instead, the packet is transferred as it is.

In the present embodiment, the country identification information adding device inserts the country identification information into the specific area of the packet, and the country identification apparatus simply deletes the country identification information from the specific area. Can be notified.

Embodiment 5 FIG.
In the present embodiment, a method of connecting the mobile phone owned by the equipment installation worker and the country identification information adding device 600 when installing the equipment 100 and acquiring the country identification information via the mobile phone will be described.

FIG. 22 shows a configuration example of the device remote monitoring system according to the present embodiment.
Since the configuration on the monitoring center side is the same as that of the first to fourth embodiments, the illustration is omitted.
The device 100 and the communication device 200 are the same as those shown in FIG.
However, the communication device 200 is connected to an IP network 800 which is a communication network other than the cellular phone network 500.
The country identification information adding unit 602, the port number correspondence table storage unit 603, and the communication unit 604 in the country identification information adding device 600 are the same as those shown in FIG.
In the present embodiment, the device installation worker owns the mobile phone 1000 having the country identification information transmission unit 1001, and the mobile phone 1000 is connected to the country identification information adding device 600 by wire or wireless when the device 100 is installed.
When the country identification information acquisition unit 601 detects the connection of the mobile phone 1000, the country identification information adding unit 601 transmits a request for country identification information to the mobile phone 1000.
When receiving the country identification information request from the country identification information adding device 600, the country identification information transmitting unit 1001 of the mobile phone 1000 receives the communication carrier code of the currently connected communication carrier, and receives the country identification information adding device. 600.
Specifically, the country identification information transmission unit 1001 transmits the carrier code of the carrier of the mobile phone network 500 to the country identification information adding device 600.
Any of the methods described in the first to fourth embodiments may be used by the country identification information adding device 600 to transmit the carrier code acquired from the mobile phone 1000 to the monitoring center.

According to the present embodiment, the country identification information can be added to the packet even if the network used when the device and the monitoring center communicate is not the mobile phone network.

Although the embodiments of the present invention have been described above, these two embodiments may be combined and implemented.
Alternatively, one of these embodiments may be partially implemented.
Or you may implement combining these embodiment partially.
In addition, this invention is not limited to these embodiment, A various change is possible as needed.

Finally, a hardware configuration example of the country identification information adding device 600 shown in the first to fifth embodiments will be described with reference to FIG.
The country identification information adding device 600 is a computer, and each element of the country identification information adding device 600 can be realized by a program.
As a hardware configuration of the country identification information adding device 600, an arithmetic device 901, an external storage device 902, a main storage device 903, a communication device 904, and an input / output device 905 are connected to the bus.

The arithmetic device 901 is a CPU (Central Processing Unit) that executes a program.
The external storage device 902 is, for example, a ROM (Read Only Memory), a flash memory, or a hard disk device.
The main storage device 903 is a RAM (Random Access Memory).
The communication device 904 corresponds to the physical layer of the communication unit 604 and is, for example, a NIC (Network Interface Card).
The input / output device 905 is, for example, a mouse, a keyboard, a display device, or the like.

The program is normally stored in the external storage device 902, and is loaded into the main storage device 903 and sequentially read into the arithmetic device 901 and executed.
The program is a program that realizes the function described as “˜unit” (excluding the port number correspondence table storage unit 603, the same applies hereinafter) shown in FIG.
Further, an operating system (OS) is also stored in the external storage device 902. At least a part of the OS is loaded into the main storage device 903, and the arithmetic device 901 executes “OS” shown in FIG. ”Is executed.
In the description of Embodiments 1 to 5, “Acquire”, “Generate”, “Receive”, “Extract”, “Confirm”, “Select”, “Detect”, “Set” The information, data, signal values, and variable values indicating the results of the processing described as “etc.” are stored in the main storage device 903 as files.
Further, the encryption key / decryption key, random number value, and parameter may be stored in the main storage device 903 as a file.

Note that the configuration of FIG. 23 is merely an example of the hardware configuration of the country identification information adding device 600, and the hardware configuration of the country identification information adding device 600 is not limited to the configuration shown in FIG. It may be a configuration.

Further, the country identification information adding method according to the present invention can be realized by the procedures shown in the first to fifth embodiments.

100 device, 200 communication device, 300 communication device, 400 center device, 500 mobile phone network, 600 country identification information addition device, 601 country identification information acquisition unit, 602 country identification information addition unit, 603 port number correspondence table storage unit, 604 Communication unit, 700 country identification device, 701 country identification unit, 702 packet transfer destination designation unit, 703 transfer destination information table storage unit, 704 communication unit, 800 IP network, 1000 mobile phone, 1001 country identification information transmission unit.

Claims (10)

1. A country identification information acquisition unit that receives a communication carrier code of a carrier of a mobile phone network and acquires, as country identification information, a code representing a country to which the communication carrier belongs from the received communication carrier code;
   A country identification information addition unit for adding the country identification information acquired by the country identification information acquisition unit to a packet;
   A country identification information addition apparatus comprising: a communication unit that transmits the packet to which the country identification information is added by the country identification information addition unit.
2. The communication unit is
   2. The country identification information adding device according to claim 1, wherein the packet to which the country identification information is added is transmitted to the mobile phone network.
3. The country identification information adding unit
   2. The country identification information adding device according to claim 1, wherein a transmission source port number is deleted from a transmission source port number field of the packet, and a country identification information port number including the country identification information is described in the transmission source port number field. .
4. The country identification information adding unit
   A port number correspondence table in which a destination IP (Internet Protocol) address, a destination port number, a source IP address, a source port number, and a country identification information port number included in the packet are associated with each other is generated. Item 3. The country identification information adding device according to Item 3.
5. The communication unit is
   Receiving a response packet to the packet returned from the destination of the packet;
   The country identification information adding unit
   The destination IP address of the response packet matches the source IP address in the port number correspondence table, the destination port number of the response packet matches the country identification information port number in the port number correspondence table, When the source IP address of the response packet matches the destination IP address in the port number correspondence table and the source port number of the response packet matches the destination port number in the port number correspondence table, the response Deleting the country identification information port number from the destination port number field of the packet, describing the source port number in the port number correspondence table in the destination port number field of the response packet;
   The communication unit is
   5. The country identification information adding device according to claim 4, wherein the response packet in which the transmission source port number is described in the destination port number field is transmitted to a transmission source of the packet.
6. The country identification information adding unit
   The country identification information adding device according to claim 1, wherein the country identification information is added to a predetermined position in the packet.
7. The country identification information acquisition unit
   2. The country identification information according to claim 1, wherein the country code information of the carrier of the mobile phone network is received from the mobile phone that has received the carrier code of the carrier of the mobile phone network from the mobile phone network. Additional equipment.
8. The communication unit is
   2. The country identification information adding device according to claim 1, wherein the packet to which the country identification information is added is transmitted to a communication network other than the cellular phone network.
9. Computer
   Receiving the carrier code of the carrier of the mobile phone network, obtaining a code representing the country to which the carrier belongs from the received carrier code as country identification information;
   Add the obtained country identification information to the packet,
   A country identification information addition method for transmitting the packet to which the country identification information is added.
10. Country identification information acquisition processing for receiving a carrier code of a carrier of a mobile phone network and acquiring a code representing the country to which the carrier belongs from the received carrier code as country identification information;
    Country identification information addition processing for adding the country identification information acquired by the country identification information acquisition processing to a packet;
    A program for causing a computer to execute communication processing for transmitting the packet to which the country identification information is added by the country identification information addition processing.

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