JP5505673B2 - Communication method of IP relay device having proxy communication function - Google Patents

Description

The present invention relates to a communication method of an IP relay apparatus that enables data relay between an IP (Internet Protocol) terminal and a mobile phone network.

F is a service that combines a landline telephone network in the home, an Internet line, and a mobile phone network.
MC (Fixed Mobile Convergence) is known (for example, Patent Document 1 and Patent Document 2). In FMC, when a mobile terminal enters an area (private network) of a small base station (eg, femtocell) accommodated in an IP relay apparatus, the mobile terminal is connected to an IP relay apparatus or a wireless LAN in the same manner as an IP terminal such as a personal computer. By going through, it becomes possible to access the IP network without going through the mobile phone network.
JP 2006-129158 A JP 2003-299157 A

However, in the conventional FMC, the mobile phone terminal in the private network can execute communication via the IP network, but the IP terminal in the private network cannot execute communication via the mobile phone network. There was a drawback.

Accordingly, an object of the present invention is to realize an IP relay device that enables communication via a mobile phone network by an IP terminal in a private network.

In order to solve the above problems, the present invention provides a communication method for an IP relay device connected to a mobile phone network, a small mobile phone base station, an IP (Internet Protocol) network, and an IP terminal, the small mobile phone base A relay step for relaying a message between a station, the IP terminal, the IP network, and the mobile phone network, and a communication ID (IDentification) necessary for communication via the mobile phone network are stored. A communication ID storage step; and a communication step of executing communication via the mobile phone network using the communication ID stored in the communication ID storage step, wherein the communication ID is stored in the small mobile phone base station. It is equivalent to a communication ID used when a mobile phone terminal to which the mobile phone terminal belongs performs communication via the mobile phone network, When there is a connection request from a connected IP terminal to a predetermined destination existing in the mobile phone network, the communication step executes communication with the predetermined destination via the mobile phone network. The relay step relays a message between the predetermined destination and the IP terminal that requested the connection.

According to the present invention, communication via a mobile phone network by an IP terminal is possible in a private network. For example, a site dedicated to a mobile terminal connected via a mobile phone network can be used as a personal computer with good operability. It is possible to browse with an IP terminal.

Further, when there are a plurality of IP terminals connected to the IP relay device, there is an advantage that the communication function via the mobile phone network can be shared by the plurality of IP terminals.

  Embodiments of the present invention will be described below.

FIG. 1 is a schematic diagram of an FMC system including an IP relay device 1 according to an embodiment of the present invention.

As shown in the figure, the IP relay device 1 accommodates at least one IP terminal 2 and a small mobile phone base station 3 such as a femtocell. These devices 2 and 3 are connected to the IP network 8 and the mobile phone network 5. Here, the small mobile phone base station 3 means a base station (for example, a microcell base station, a picocell base station, a femtocell base station, etc.) that covers a smaller area than a normal radio base station. To do.

Specifically, the IP relay device 1 uses the WWW (World Wide) existing in the IP network 8 based on the destination address of the request message received from the IP terminal 2 or the mobile phone terminal 4 under the small mobile phone base station 3. The request message is relayed to either a Web site or a mobile phone dedicated site 6 existing in the mobile phone network 5. Here, the mobile phone dedicated site 6 means a site that requires authentication with the identification information of the mobile phone terminal for connection (for example, network banking using a mobile phone).
When a response message for the relayed request message is received from the IP network 8 or the mobile phone network 5, the response message is relayed to the IP terminal 2 or the mobile phone terminal 4 that sent the request message.

Further, the IP relay device 1 transmits the location registration request message and the registration release request message received from the mobile phone terminal 4 under the small mobile phone base station 3 to the HLR (
(Home Location Register) 6. Further, based on the location registration request message and the registration cancellation request message, the accommodation of the mobile phone terminals 4 under the small mobile phone base station 3 is controlled. Here, the mobile phone terminal 4 means a terminal device connected to the mobile phone network 5 (a mobile phone, a PDA terminal connected to the mobile phone network, a PC to which a mobile network connection module is connected, a SIM module card). (Including communication devices connected to
.

  FIG. 2 is a schematic configuration diagram of the IP relay device 1.

As shown in the figure, the IP relay device 1 includes an IP network IF unit 101, a mobile phone network IF unit 102, an IP terminal IF unit 103, a base station IF unit 104, a message relay unit 105, and a communication I.
It comprises a D storage unit 106, a request message conversion unit 107, a response message conversion unit 108, a request message control unit 109, and a response message control unit 110.

  The IP network IF unit 101 is an interface for connecting to the IP network 8.

  The cellular phone network IF unit 102 is an interface for connecting to the cellular phone network 5.

The IP terminal IF unit 103 is an interface for connecting to an IP terminal 2 capable of browsing, such as a PC (Personal Computer).

The base station IF unit 104 is an interface for connecting the small mobile phone base station 3.

The message relay unit 105 relays a message to the IP network IF unit 101, the mobile phone network IF unit 102, the IP terminal IF unit 103, and the base station IF unit 104 in accordance with instructions from the request message control unit 109 and the response message control unit 110. To do.

The communication ID storage unit 106 stores information of the mobile phone terminal 4 accommodated in the IP relay device 1 as a mobile phone terminal information storage table for each terminal. Further, the mobile phone terminal 4 or the IP terminal 2
The connection information when a site on the IP network 8 or the cellular phone network 5 is accessed from either of them is stored as a transmission source storage table.

Next, the mobile phone terminal information storage table and the transmission source storage table stored in the communication ID storage unit 106 will be described. FIG. 3A shows a mobile phone terminal information storage table, and FIG.
FIG. 4 is a diagram schematically illustrating a transmission source storage table.

As shown in FIG. 3A, the mobile phone terminal information storage table is stored in the mobile phone terminal 4 to be accommodated.
A record 1060 is stored every time. The record 1060 includes a field 1061 for storing mobile phone terminal information of the mobile phone terminal 4, a field 1062 for registering a mobile operator (including model information) of the mobile phone terminal 4, and the registration / update date and time of the record 1060. A field 1063 to be registered, and a Used Flag field 1064 for setting whether the table 1060 is used or not used for relaying a request message to the mobile phone network IF unit 102
Have

The communication ID storage unit 106 receives the communication ID related to the authentication of the cellular phone terminal 4 and the cellular phone network 5 received by the own IP network relay device 1 from the cellular phone terminal 4 via the base station IF unit 104. When relaying to the HLR 7 in the network 5, the mobile phone terminal 4 subordinate to the small mobile phone base station 3 is recognized based on the communication ID, and the record 1060 of the mobile phone terminal 4 in the mobile phone terminal information storage table is stored. sign up.

In addition, the communication ID storage unit 106 is a communication ID related to the cancellation of the attribution of the mobile phone terminal 4 and the mobile phone network 5 received by the own IP network relay device 1 from the mobile phone terminal 4 via the base station IF unit 104.
When the mobile phone terminal 4 is relayed to the HLR 7 in the mobile phone network 5, the mobile phone terminal information storage table is recognized on the basis of the communication ID when the mobile phone terminal 4 is detached from the subordinate of the small mobile phone base station 3. Delete the record 1060 of the mobile phone terminal 4.

Further, the communication ID storage unit 106 monitors the update date / time of each record 1060. And
The mobile phone terminal 4 corresponding to the record 1060 for which a predetermined time has passed since the update date / time is recognized as having left the subordinate of the small mobile phone base station 3, and the record 1060 in the mobile phone terminal information storage table is deleted.

Next, as shown in FIG. 3B, in the transmission source storage table, the request message is relayed from the base station IF unit 104 to the IP network IF unit 101, and from the IP terminal IF unit 103 to the mobile phone network IF. When relaying to the unit 102, a record 2060 is stored. Record 20
60, when relaying a request message, a field 2061 for storing terminal information that has transmitted the request message, a field 2062 for storing a relay destination (IP network IF unit 101 or mobile phone network IF unit 102) of the request message, Source terminal information changed to (the mobile operator in the field 1062 of the record 1060 or the IP of the own IP relay device 1)
Address) is stored.

Returning to the description of FIG.

The request message control unit 107 is the IP terminal IF unit 103 or the base station IF unit 1
When the request message arrives at 04, either the IP network IF unit 101 or the cellular phone network IF unit 102 is connected to the relay destination IF based on the transmission destination address of the request message.
The message relay unit 105 is controlled so that the request message is relayed to the relay destination IF unit.

Specifically, the character string of the destination address is searched, the destination address is determined whether the destination address is an address specific to a mobile site such as / ez / or / i /, and is specific to the mobile site. If the character string is not present, it is determined that the transmission destination of this request message is addressed to the WWW site 9, and the message relay unit 105 is controlled so that this request message is relayed to the IP network IF unit 101. If the destination address is an address specific to the mobile site such as / ez / or / i /, the message relay unit 105 is controlled so that this request message is relayed to the mobile phone network IF unit 102.

Further, when the request message control unit 109 transmits a request message arriving at the base station IF unit 104 to the IP network IF unit 101, the request message control unit 109 sets the transmission source address of this request message to the IP address assigned to the own IP relay device 1. change.

When a response message for the request message arrives at the IP network IF unit 101 or the cellular phone network IF unit 102, the response message control unit 110 performs the IP terminal IF unit 103 or the base station I based on the destination address of the response message.
The F unit 104 is selected as a relay destination IF unit, and the message relay unit 105 is controlled so that this response message is relayed to the relay destination IF unit.

Specifically, if the IP terminal information is stored in the field 2061 of the record 2060 of the communication ID storage unit 106 as the transmission destination address of the response message arriving at the cellular phone network IF unit 102, the response message The message relay unit 105 is controlled so as to be relayed to the IF unit 103, and if the IP terminal information is not stored, the message relay unit 105 is controlled so that this response message is relayed to the base station IF unit 104. .

Also, the destination address of the response message arriving at the IP network IF unit 101 is the own IP address.
If it is the IP address of the relay device 1 and the mobile phone terminal 4 is stored in the field 2061 of the record 2060, the message relay unit 105 is controlled so that this response message is relayed to the base station IF unit 104, If you do n’t even remember your mobile device information,
The message relay unit 105 is controlled so that this response message is relayed to the IP terminal IF unit 103.

The request message conversion unit 107 stores the terminal information of the transmission source in the communication ID storage unit 106 when the request message arriving at the IP terminal IF unit 103 is relayed to the mobile phone network IF unit 102 by the message relay unit 105. To the request message with the added user agent information. Further, when a request message arriving at the mobile terminal IF unit 104 is relayed to the IP network IF unit 101 by the message relay unit 105, the source address is converted to the IP address of the own IP relay device 1.

The response message conversion unit 108 changes the description message so that it can be viewed on the mobile phone terminal 4 when the response message arriving at the IP network IF unit 101 is relayed to the base station IF unit 104 by the message relay unit 105.

Specifically, if the response message is addressed to the mobile phone terminal 4 that can be browsed in the HDML language, the description language of the response message arriving at the IP network IF unit 101 is set to HDML.
Convert to Further, the number of characters and the number of digits according to the screen size of the mobile phone terminal 4 are divided. If it is addressed to the mobile phone terminal 4 that can be browsed without converting the description language, the description language is not changed, and the number of characters and the number of digits according to the screen size of the mobile phone terminal 4 are divided.

Further, the response message conversion unit 108 converts the response message so that it can be viewed on the IP terminal 2 when the response message arriving at the cellular phone network IF unit 102 is relayed to the IP terminal IF unit 103 by the message relay unit 105. .

Specifically, the fields 1061 and 1 of the record 1060 in the communication ID storage unit 106
The address of the destination of the response message sent to 062 is the IP address of the IP terminal 2
Convert to P address. Furthermore, response messages that arrive in the HDML description language are converted to the HTML description language.

FIG. 4 is a flowchart for explaining the operation of the IP relay device 1.
When the base station IF unit 104 receives the location registration request message from the mobile phone terminal 4 under the small mobile phone base station 3 (“Yes” in S10), the base station IF unit 104 notifies the communication ID storage unit 106 of the location registration request message. . In response to this, the communication ID storage unit 106 receives the cellular phone network IF.
The location registration request message is transmitted to the HLR 7 in the cellular phone network 5 via the unit 102 (S11). Further, the communication ID storage unit 106 searches the record 1063 using the terminal information included in the location registration request message as a key.

If the record 1060 can be retrieved, the communication ID storage unit 106 records the record 1060.
The update date and time registered in the field 1063 is updated to the current date and time.

On the other hand, if the record 1060 could not be searched, the communication ID storage unit 106 adds a new record 1060 and the mobile terminal information included in the location registration request message in the field 1061 of the new record 1060. Register. This record 1
The user agent of the mobile phone terminal 4 is registered in the field 060 of 060, and the current date and time is registered in the field 1063 (S12).

When the base station IF unit 104 receives a registration cancellation request message from the mobile phone terminal 4 under the small mobile phone base station 3 (“Yes” in S13), the base station IF unit 104 sends the registration cancellation request message to the communication ID storage unit 106. Notice. In response to this, the communication ID storage unit 106 transmits this deregistration request message to the HLR 7 in the cellular phone network 5 via the cellular phone network IF unit 102 (S14).

Further, the communication ID storage unit 106 searches for the record 1060 from the communication ID storage unit 106 using the terminal information included in the deregistration request message as a key.
060 is deleted from the communication ID storage unit 106 (S15).

When the IP relay device 1 receives the message (“No” in S13, “Ye” in S16).
s "), the destination IF part of the message is determined (S17). When a message arrives at IP terminal IF unit 103 or base station IF unit 104 ("IP terminal IF unit, base station IF in S17"
Portion)) if the destination IF portion of the message is the IP terminal IF portion 103 (“I” in S18).
P terminal IF unit)), request message control unit 109 performs request message processing A described later. If the destination IF part of the request message is the base station IF part 104 (“base station IF part” in S18), the request message control part 109 performs request message processing B described later.

When a message arrives at the fixed telephone network IF unit 101 or the mobile phone network IF unit 102 (“fixed telephone network IF unit, mobile phone network IF unit” in S17), the response message control unit 110 performs response message processing to be described later. (S21).

FIG. 5 is a flowchart for explaining S19 (request message processing A) of FIG.

In step S201, the request message control unit 109 sets a relay destination IF unit based on the transmission destination address of the request message.

Specifically, the request address of the request message is searched from the top, and if a character string specific to the mobile site exists, the relay destination is set in the mobile phone network IF unit 102, and if it does not exist,
The relay destination is set in the IP network IF unit 101 (S201).

When the relay destination is set in the mobile phone network IF unit 102 (“mobile phone network IF unit” in S201)
Then, the mobile operator determination corresponding to the character string unique to the mobile site to which the request message is sent is performed (S202, S211).
When it is determined that the mobile operator is the company A (“Company A” in S202), the record 1060 in which the user agent information of the company A is registered in the field 1062 is searched (S203).
.

When such a record 1060 can be searched (“Yes” in S203), it is determined whether or not the field 1064 is unused (S204). If there is no record 1060 in which the field 1064 is unused (“No” in S204), the IP network IF unit 101 is set as a relay destination IF unit (S209), and this request message is sent to the IP network IF.
The message relay unit 105 is controlled so as to be transmitted from the unit 101 (S210), this flow is terminated, and the process returns to S10.

On the other hand, if there is a record 1060 in which the field 1064 is unused (S2
04, “Yes”), the user agent information of company A stored in the field 1062 is added (S205). Further, the record 2060 is stored in the communication ID storage unit 106 (S206). Further, the request message control unit 109 sets the field 1064 to be in use (S207), and controls the message relay unit 105 so that the request message is transmitted from the cellular phone network IF unit 102 (S208), and ends this flow. S1
Return to zero.

Record 10 in which user agent information of company A is registered in field 1062
60 cannot be searched (“No” in S203), the IP network IF unit 101 is connected to the relay destination I.
The message relay unit 105 is controlled so that the request message is transmitted from the IP network IF unit 101 (S210), and this flow is terminated.
Return to.

When the mobile phone carrier to which the request message is sent is B company (“B company” in S211)
, Record 10 in which user agent information of company B is registered in field 1062
60 is searched (S211).

When such a record 1060 can be searched (“Yes” in S211), it is determined whether or not the field 1064 is unused (S213). If there is no record 1060 in which the field 1064 is unused (“No” in S213), the IP network IF unit 101 is set as a relay destination IF unit (S209), and this request message is sent to the IP network IF.
The message relay unit 105 is controlled so as to be transmitted from the unit 101 (S210), this flow is terminated, and the process returns to S10.

On the other hand, if there is a record 1060 in which the field 1064 is unused (S2
13 "Yes"), the user agent information of company B stored in the field 1062 is added (S214). Further, the record 2060 is stored in the communication ID storage unit 106 (S206). Further, the request message control unit 109 sets the field 1064 to be in use (S207), and controls the message relay unit 105 so that the request message is transmitted from the cellular phone network IF unit 102 (S208), and ends this flow. S1
Return to zero.

Record 10 in which user agent information of company B is registered in field 1062
60 cannot be searched (“No” in S213), the IP network IF unit 101 is set to the relay destination I.
The message relay unit 105 is controlled so that the request message is transmitted from the IP network IF unit 101 (S210), and this flow is terminated.
Return to.

When the mobile operator to which the request message is sent is company C (“C company” in S211)
, Record 10 in which user agent information of company B is registered in field 1062
60 is searched (S215).

When such a record 1060 can be searched (“Yes” in S215), it is determined whether or not the field 1064 is unused (S216). If there is no record 1060 in which the field 1064 is unused (“No” in S216), the IP network IF unit 101 is set as a relay destination IF unit (S209), and this request message is sent to the IP network IF.
The message relay unit 105 is controlled so as to be transmitted from the unit 101 (S210), this flow is terminated, and the process returns to S10.

On the other hand, if there is a record 1060 in which the field 1064 is unused (“Yes” in S216), the user agent information of company C stored in the field 1062 is added (S217). Further, the record 2060 is stored in the communication ID storage unit 106 (
S206). Further, the request message control unit 109 sets the field 1064 to be in use (S207), and controls the message relay unit 105 so that the request message is transmitted from the cellular phone network IF unit 102 (S208), and ends this flow. And it returns to S10.

Record 10 in which user agent information of company C is registered in field 1062
60 cannot be searched (“No” in S215), the IP network IF unit 101 is connected to the relay destination I.
The message relay unit 105 is controlled so that the request message is transmitted from the IP network IF unit 101 (S210), and this flow is terminated.
Return to.

When the relay destination is set to the IP network IF unit 101 (“IP network IF unit” in S201), the message relay unit 105 so that the request message is transmitted from the IP network IF unit 101.
(S210), this flow is finished, and the process returns to S10.

FIG. 6 is a flowchart for explaining S20 (request message processing B) in FIG.

The request message control unit 109 determines that the message destination is I in S18 of FIG.
If it is determined that the P terminal IF unit 103, the relay destination is determined (S215).

Specifically, the request address of the request message is searched from the top, and if a character string specific to the mobile site exists, the relay destination is set in the mobile phone network IF unit 102, and if it does not exist,
The relay destination is set in the IP network IF unit 101.

When it is determined that the relay destination is the IP network IF unit 101 (“IP network IF unit” in S215),
The IP network IF unit 101 is set as a relay IF unit, and the process proceeds to S216. Mobile phone network IF
If it is determined that it is the unit 102 (“mobile phone network IF unit” in S215), the mobile phone network IF unit 102 is set as an IF unit to relay, and the process proceeds to S224.

Next, the request message control unit 109 searches the source terminal information of the request message arriving at the base station IF unit 104 from the field 1061 of the record 1060, and determines whether or not the field 1064 is unused ( S216).

If the determined result is unused (“unused” in S216), the source address is set to IP.
The IP address of the relay device 1 is changed (S217).

Next, it is newly stored in the record 2060 (S218), and the Used Flag of the field 1064 of the record 1060 is set to “in use” (S219).

Then, the message relay unit 105 is controlled so that the request message is transmitted from the IP network IF unit 101 (S220).

On the other hand, if the source terminal information of the request message is used by the IP terminal 2 in S216 (“in use” in S216), the arrived request message is discarded (S221).

Then, the base station IF unit 104 is set as an IF unit to relay (S222), and a display message “cannot be connected” is transmitted to the small radio telephone base station 3 via the base station IF unit 104 (
S223), this flow is finished and the process returns to S10.

When relaying to the mobile phone network IF unit in S215 ("Mobile phone network I in S215"
F section ”), the request message control section 109 searches the source terminal information of the request message arriving at the base station IF section 104 from the field 1061 of the record 1060, and determines whether the field 1064 is unused. Determination is made (S224).

As a result of the determination, if it is unused (“unused” in S224), the Used Flag is set to “in use” (S225).

Thereafter, the message relay unit 105 is controlled so that this request message is transmitted from the IP network IF unit 101 (S226), and this flow is terminated and the process returns to S10.

On the other hand, in S224, the source terminal information of the request message is stored in the field 2063 of the record 2060, and the field 1062 of the record 1060 is IP address.
If it is used by the terminal 2 (“in use” in S224), the IP terminal 2 being used is deleted from the record 2060 (S227), and the field 1064 is changed to “in use” again (S225).

Thereafter, the message relay unit 105 is controlled so that the request message is transmitted from the IP network IF unit 101 (S226).

FIG. 7 is a flowchart for explaining S21 (response message processing) in FIG.
In the response message control unit 110, the message relay unit 105 is connected to the IP network IF unit 101.
It is determined whether the response message to the request message relayed to the mobile phone network IF unit 102 has arrived at the IP network IF unit 101 or the mobile phone network IF unit 102 (S301).

In S301, if the IP network IF unit 101 arrives (in S301, “IP network IF
Section ”), the record 2060 stored in the communication ID storage section 106 is searched, and the IF section of the relay destination is determined based on the transmission destination information of the response message (S302).

Specifically, the destination IP address of the response message matches the IP address of the own IP relay device 1 stored in the field 2063 of the record 2060, and the field 2
If the request message transmission terminal of 061 is the mobile phone terminal 4, the relay destination is determined to be the base station IF unit 104, and the relay destination is set. If the address is not stored in the field 2063, the relay destination is determined to be the IP terminal IF unit 103, and the relay destination is set.

If it is determined that the relay destination is the base station IF unit 104 (“base station IF unit” in S302), the response message control unit 110 analyzes the received message body of the response message. (S303).

As a result of the analysis, if it is determined that the description is an HDML description (“HDML” in S303), the process proceeds to S305 without changing the arriving response message description language.

If it is determined that the description is HTML (“HTML” in S303), the response message arriving in the HTML description is changed to the HDML description (S304), and the process proceeds to S305.

Specifically, the determination of whether or not the language is an HDML description language is based on the content of the received message.
If nt-type is “Text / html”, it is determined to be an HTML language, and if not, it is determined to be an HDML description language.

In S305, it is determined whether or not the number of display digits that can be displayed on the mobile phone terminal 4 (for example, 10 horizontal full-width characters (20 characters in half-width) × 6 vertical rows) is exceeded. If it is determined that the number of display digits is exceeded (“Yes” in S305), the data portion of the received response message is divided so as to be within the number of display digits and stored in the response message storage unit 111 (S306). After saving, the message relay unit 105 is controlled so that the response message is transmitted from the base station IF unit 104 (S307).

After sending the message, it is determined whether there is a request for the remaining saved message (S3).
08). When there is a message request (“Yes” in S308), the message relay unit 105 is controlled to transmit the requested message from the base station IF unit 104.

On the other hand, if there is no deck request (“None” in S308), U in the field 1064
The sed Flag is changed to “unused” (S315).

If the relay destination is the IP terminal IF unit (“IP terminal IF unit” in S302), the message relay unit 105 is controlled so that the arrived response message is transmitted from the IP terminal IF unit 103 in S309.

In S310, the field 1064 of the record 1060 is “in use”, the field 1062 matches the field 2063 of the record 2060, and the field 206
If 1 is the IP terminal 4, the relay destination is set in the IP terminal IF unit 103 (“
IP terminal IF section "), the process proceeds to S311. Even if the field 1064 of the record 1060 is “in use”, if there is no match with the field 2063 of the record 2060, the relay destination is set in the base station IF unit 104 (“base station IF unit” in S310) The process proceeds to S316.

In S311, the destination address of the response message is changed to the IP address of the IP terminal 2, and the message body is analyzed (S312). As a result of the analysis, if it is written in the HDML description language (“HDML” in S312), the HDML description is changed to the HTML description (S313), and the message relay unit 105 is configured to transmit the response message from the IP terminal IF unit 103. Is controlled (S314).

If not written in the HDML description language (“HTML” in S312), the message relay unit 105 is controlled to transmit the response message from the IP terminal IF unit 103 without changing the description language (S314).

Specifically, it is determined whether or not it is an HDML description language by adding <H at the head of the received message.
If the character string DML VERSION = 3.0 PUBLIC = TRUE> exists, it is determined as the HDML language, and if it does not exist, it is determined as the HTML description language (S3).
12).

After the message relay unit 105 is controlled to be relayed to the IP terminal IF 103, when a response message is transmitted, the field 1064 of the record 1060 is changed to “unused” (S315).

On the other hand, when the relay destination is set in the base station IF unit 104 in S311, the response message control unit 110 controls the message relay unit 105 to transmit a response message from the base station IF unit 104 (S316).

The message relay unit 10 is configured to relay the response message to the base station IF unit 104.
5, when a response message is sent, 1060 field 1064
Is changed to “unused” (S315).

FIG. 8 is a sequence diagram for explaining an example of the portable terminal accommodating operation of the FMC system shown in FIG.

When the mobile phone terminal 4 recognizes that it has entered the area of the small mobile phone base station 3 based on a beacon transmitted from the small mobile phone base station 3 (S401), the small mobile phone base station 3 Is set as the attribution destination (S402). In addition, a communication ID related to the belonging authentication to the small mobile phone base station 3 is transmitted to the HLR 7. This communication ID reaches the HLR 7 in the mobile phone network 5 via the small mobile phone base station 3 and the IP relay device 1 (S4).
03-S405). The IP relay device 1 adds the record 1060 related to the mobile phone terminal 4 that is the transmission source of the location registration request message to the communication ID storage unit 106, and starts accommodating the mobile phone terminal 4 (S406).

Thereafter, while the mobile phone terminal 4 is in the area of the small mobile phone base station 3, the mobile phone terminal 4 periodically transmits a communication ID related to attribution authentication to the HLR 7. This communication ID reaches the HLR 7 in the mobile phone network 5 via the small mobile phone base station 3 and the IP relay device 1 (S407-
S409). Each time the IP relay device 1 receives the communication ID, the IP relay device 1 updates the update date and time of the record 1060 regarding the mobile phone terminal 4 that is the transmission source of the communication ID, and continues to accommodate the mobile phone terminal 4 (S410).

When the mobile phone terminal 4 recognizes that it has left the area of the small mobile phone base station 3 based on a beacon transmitted from the small mobile phone base station 3 (S411), the small mobile phone base station 3 is released from the attribution destination (S413). In addition, the communication ID related to the attribution cancellation from the small mobile phone base station 3 is transmitted to the HLR 7. This communication ID reaches the HLR 7 in the mobile phone network 5 via the small mobile phone base station 3 and the IP relay device 1 (S413 to S415). The IP relay device 1 deletes the record 1060 related to the mobile phone terminal 4 that is the transmission source of the communication ID from the communication ID storage unit 106, and the mobile phone terminal 4
(S416).

  In the above, the form of one Example of this invention was demonstrated.

In the present embodiment, when the IP relay device 1 receives a request message from the mobile phone terminal 4 subordinate to the small mobile phone base station 3, based on the transmission destination address of the request message, the IP network 8 and This request message is relayed to one of the mobile phone networks 5. Specifically, the character string of the destination address is searched, and the destination address is
It is confirmed whether or not the destination address is an address specific to the mobile site such as / ez / or / i /. If there is no character string specific to the mobile site, the destination of the request message is W
The message relay unit 105 is controlled so that the request message is relayed to the IP network IF unit 101, and the transmission destination address is an address unique to the mobile site such as / ez / or / i /. If there is this request message, the mobile phone network IF unit 1
The message relay unit 105 is controlled so as to be relayed to 02.

Further, when relaying from the IP terminal IF unit 103 to the mobile phone network IF unit 102, the request message is sent to the mobile phone network 5 according to the mobile operator as if the message was transmitted from the mobile phone terminal 4. Change to the specified description language and relay. Further, when relaying from the base station IF unit 104 to the IP network IF unit 101, it is as if the IP network 8 has the IP relay device 1
The source address of the request message is changed to the IP address of the own IP relay device 1 as if the request message has been transmitted from.

Further, in the present embodiment, when the IP relay device 1 receives a response message from the IP network 8 or the mobile phone network 5, the IP terminal 2 and the small mobile phone base station 3 are based on the communication ID storage unit 106. This response message is relayed to any of the cellular phone terminals 4 under its control. Specifically, the destination I of the response message received from the IP network 8
The own IP relay device 1 whose P address is stored in the field 2063 of the record 2060
If the request message transmission terminal in the field 2061 is the mobile phone terminal 4, the relay destination is set in the base station IF unit 104. Field 206
If the address is not stored in 3, the relay destination is set in the IP terminal IF unit 103.

When the response message is received from the mobile phone network 5, the field 1064 of the record 1060 is “in use” in the communication ID storage unit 106.
If 2 matches the field 2063 of the record 2060 and the field 2061 is the IP terminal 2, the relay destination is set in the IP terminal IF unit 103. Even if the field 1064 of the record 1060 is “in use”, if there is no match with the field 2063 of the record 2060, the relay destination is set in the base station IF unit 104.

Therefore, according to the present embodiment, when the IP relay device 1 receives a request message from the mobile phone terminal 4 under the small mobile phone base station 3 or the IP terminal 2 other than the mobile phone terminal 4, the request message IP network 8 or mobile phone network 5 based on the destination address of
Send this request message to one of the following: Therefore, it is possible to browse the WWW site 9 and the mobile-only site on both the mobile phone terminal 4 and the IP terminal 2 other than the mobile phone terminal 4.

In the above embodiment, the configuration of the IP relay device 1 shown in FIG. 2 is the ASIC (Appl
IC SPECIFIC INTEGRATED CIRCUIT), FPG
It may be executed in hardware by an integrated logic IC such as A (Field Programmable Gate Array), or DSP (Digital)
It may be executed by software by a computer such as a Signal Processor. Alternatively, in a general-purpose computer such as a CPU (Personal Computer) equipped with an auxiliary storage device such as a CPU, memory, HDD, DVD-ROM, and a communication interface such as a NIC (Network Interface Card) or a telephone line interface, the CPU It may be realized by loading the program from the auxiliary storage device onto the memory and executing it.

DESCRIPTION OF SYMBOLS 1 ... IP relay apparatus, 2 ... IP terminal, 3 ... Small mobile phone base station, 4 ... Mobile phone terminal, 5 ...
Mobile phone network, 6 ... mobile phone dedicated site, 7 ... HLR, 8 ... IP network, 9 ... WWW site, 1
DESCRIPTION OF SYMBOLS 01 ... IP network IF part, 102 ... Mobile telephone network IF part, 103 ... IP terminal IF part, 104 ... Base station IF part, 105 ... Message relay part, 106 ... Communication ID memory | storage part, 107 ... Request message conversion part, 108 Response message conversion unit 109 Request message control unit 110 Response message control unit 111 Response message storage unit

1 is a schematic diagram of an FMC system including an IP relay device according to an embodiment of the present invention. 1 is a schematic configuration diagram of an IP relay device 1. FIG. (A) is the figure which represented typically the mobile telephone terminal information storage table memorize | stored in the communication ID memory | storage part 106, (b) is a transmission source memory table memorize | stored in the communication ID memory | storage part 106 typically. FIG. FIG. 6 is a flowchart for explaining the operation of the IP relay device 1. It is a flowchart for demonstrating S19 (request message process A) of FIG. It is a flowchart for demonstrating S20 (request message process B) of FIG. It is a flowchart for demonstrating S21 (response message process) of FIG. It is a sequence diagram for demonstrating an example of the mobile telephone terminal accommodation operation | movement of the FMC system shown in FIG.

Claims (1)

A communication method of an IP relay device connected to a mobile phone network, a small mobile phone base station, an IP (Internet Protocol) network, and an IP terminal,
A relay step of relaying a message between the small mobile phone base station, the IP terminal, the IP network, and the mobile phone network;
A communication ID storage step for storing a communication ID (IDentification) necessary for communication via the mobile phone network, and a communication ID stored in the communication ID storage step via the mobile phone network. A communication step for executing the communication performed,
The communication ID is equivalent to a communication ID used when a mobile phone terminal belonging to the small mobile phone base station performs communication via the mobile phone network, and is connected to the own IP relay device. When there is a connection request from the IP terminal to a predetermined destination existing in the mobile phone network, the communication step executes communication with the predetermined destination via the mobile phone network, and the relay step Is a communication method of an IP relay apparatus having a proxy communication function, wherein a message is relayed between the predetermined destination and the IP terminal that has requested the connection.

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