JP2005244463A - Call connection controller, management server, call connection control system and call connection control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a call connection controller which can connect efficiently a call by using a suitable communication network, when an originating user selects one telephone number arbitrarily and originates from an originating terminal to a mobile communication terminal usable for the telephone numbers corresponding to a plurality of types of communication networks; and to provide a management server, a call connection control system and a call connection control method. <P>SOLUTION: Being in the range area decision unit 14 of being in the range management server 10 judges the type of a communication network corresponding to a service area in which a destination terminal 50 is located if receiving originating data to the destination terminal 50, and a connecting network selector 15 selects the type of the communication network to be connected. A connecting number decision unit 16 judges the telephone number corresponding to the type of the selected communication network, and a call connector 17 replaces the telephone number of the destination terminal 50 included in originating data with the judged telephone number, and transfers to the selected communication network. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a call connection control device, a management server, a call connection control system, and a call connection control method for controlling call connection to a mobile communication terminal that can use a telephone number corresponding to each of a plurality of types of communication networks.

  In recent years, mobile communication terminals capable of performing communication via a plurality of types of communication networks have become widespread. As such a mobile communication terminal, for example, there is a mobile communication terminal having both a communication function of a mobile phone network communication function and a communication function by a W-LAN (wireless LAN). Such a mobile communication terminal holds a telephone number for a mobile telephone network and a telephone number for W-LAN, and can make / receive calls using either of these telephone numbers.

  When a calling-side user (hereinafter referred to as “calling user”) makes a call from a calling terminal to such a receiving terminal that can use a plurality of telephone numbers, the calling user can call the calling terminal to the receiving terminal. Any one of the telephone numbers is arbitrarily selected and transmitted. At this time, if the receiving terminal does not exist in the service area of the communication network corresponding to the telephone number selected by the calling user (hereinafter also referred to as “not located”), the calling user is separated again. It was necessary to call again with the phone number. In addition, when the receiving terminal is located in an overlapping area of a plurality of types of communication networks, the user on the receiving side (hereinafter referred to as “destination user”) has the right to select which telephone number the receiving terminal should receive. There was no way. For this reason, the called user has no choice but to make an incoming call with the telephone number sent by the calling user.

To prevent the calling user from calling again with another telephone number when the mobile communication terminal is not located in the service area of the communication network corresponding to the telephone number selected by the calling user. The conventional technique is disclosed in, for example, Patent Document 1. In Patent Document 1, when a calling terminal has a plurality of different area numbers and cannot be connected by calling with one area number, the calling terminal automatically re-calls another area number. The technical contents are described.
JP-A-9-181816 (summary)

  However, in the technique described in Patent Document 1, the condition that the calling terminal determines that the receiving terminal does not exist in the area is that there is no response even after a certain period of time has elapsed from the call, or from the exchange Since it is a case where a notification that the receiving terminal does not exist in the area is received, it takes time to make a determination. Furthermore, after determining that the receiving terminal does not exist in the area, the transmitting terminal takes time and effort to disconnect the office line and redial with another area number. For this reason, it takes a considerable time and processing load until the calling terminal makes a call connection with the receiving terminal.

  The present invention has been made in view of the above problems, and a calling user arbitrarily selects one telephone number and makes a call to a mobile communication terminal capable of using a telephone number corresponding to each of a plurality of types of communication networks. An object is to provide a call connection control device, a management server, a call connection control system, and a call connection control method capable of efficiently making a call connection using an appropriate communication network when making a call from a terminal. And

  In order to solve the above problems, the invention described in claim 1 is a call connection control apparatus for controlling call connection to a mobile communication terminal capable of using a telephone number corresponding to each of a plurality of types of communication networks. And a visited area determining means for determining the type of communication network corresponding to the service area in which the receiving terminal is located when receiving outgoing data including one of the telephone numbers usable by the receiving terminal. A connection network selection means for selecting a communication network to be used as a connection destination based on the type of the communication network determined by the in-service area determination means; and a connection destination selected by the connection network selection means. Connection number determination means for determining the telephone number of the receiving terminal corresponding to the communication network to be transmitted; Call connection means for transferring the outgoing data to the communication network selected by the connection network selection means after replacing the telephone number of the receiving terminal included in the telephone number determined by the connection number determination means A call connection control device is provided.

  According to the first aspect of the present invention, the call connection control device replaces the telephone number of the receiving terminal included in the outgoing data with the telephone number determined by the connection number determining means, and then connects the outgoing data. In order to transfer to the communication network selected by the network selection means, even if the telephone number entered by the calling user at the time of outgoing call and the telephone number determined by the connection number determination means are different, The call connection can be made efficiently using the communication network selected by the connection network selection means without performing any operation or processing.

  For this reason, even if the calling user selects a telephone number without being aware of the service area where the receiving terminal is located and makes a call from the calling terminal, the calling user connects to the receiving terminal without calling again with a different phone number. Can improve convenience. Further, the call connection control device transfers the outgoing data to the communication network determined by the connection network selection means without notifying the determination result to the transmitting terminal as in the prior art, so that no load is applied to the transmitting terminal. The call connection with the receiving terminal can be performed efficiently and in a short time.

  A second aspect of the present invention is the call connection control device according to the first aspect, wherein the area information for storing information indicating the type of communication network corresponding to the service area in which the mobile communication terminal is currently located is stored. Storage means, subscriber information storage means for storing the type of communication network corresponding to each telephone number that can be used by the mobile communication terminal, and priority use when making a call connection to the mobile communication terminal A preferential connection destination storage unit that stores a type of a communication network to be connected, wherein the located area determination unit performs the determination based on information stored in the visited area information storage unit, and determines the connection number The means performs the determination based on the information stored in the subscriber information storage means, and the connection network selection means uses the area coverage determination means. Type constant communication network if there are a plurality, and selects the type of the priority to the communication network to be used is stored in the priority connection destination storage device as a connection destination.

  According to the second aspect of the present invention, the call connection control device holds information for determining the type of the communication network to be used as a connection destination when making a call connection to the receiving terminal in its own device. Therefore, the connection destination can be determined immediately, and the call connection with the receiving terminal can be made efficiently in a short time. In addition, the user can perform call connection by preferentially using the communication network desired by the user by registering in advance the type of communication network to be preferentially connected in the preferential connection destination storage means.

According to the third aspect of the present invention, when a call connection is made to a mobile communication terminal that can use telephone numbers corresponding to each of a plurality of types of communication networks, the type of communication network to be used as a connection destination is selected. And a subscriber information storage means for storing a type of communication network corresponding to each telephone number that can be used by the mobile communication terminal, and a service area in which the mobile communication terminal is currently located. Visited area information storage means for storing information indicating the type of the corresponding communication network, and priority connection destination storage for storing the type of communication network to be preferentially used when making a call connection to the mobile communication terminal And a management server.
According to the third aspect of the present invention, the management server holds information for determining the type of communication network to be used when making a call connection to the receiving terminal. Information for determination can be provided immediately, and efficient call connection control can be performed.

  According to a fourth aspect of the present invention, there is provided a call connection control system for controlling a call connection to a mobile communication terminal capable of using a telephone number corresponding to each of a plurality of types of communication networks. Subscriber information storage means for storing the type of communication network corresponding to each, and area information storage means for storing information indicating the type of communication network corresponding to the service area in which the mobile communication terminal is currently located; When a call connection to the mobile communication terminal is received, priority connection destination storage means for storing the type of communication network to be preferentially used and outgoing data including the telephone number of the incoming terminal are received from the outgoing terminal. And a communication network corresponding to the service area in which the receiving terminal is located based on the information stored in the area information storage means. Based on the information stored in the pre-established connection destination storage means and the area-of-service area determination means for determining the type of communication network, it is used as the connection destination from the types of communication networks determined by the area-of-visit area determination means A connection network selection means for selecting a communication network to be selected, and a telephone number of the receiving terminal corresponding to the communication network selected by the connection network selection means based on information stored in the subscriber information storage means A connection number determination means for determining the connection data, and after replacing the telephone number of the receiving terminal included in the transmission data with the telephone number determined by the connection number determination means, the transmission data is selected by the connection network selection means A call connection control system comprising a call connection means for transferring to a communication network Subjected to.

  The invention according to claim 5 is a call connection control method for controlling call connection to a mobile communication terminal that can use telephone numbers corresponding to a plurality of types of communication networks, wherein the calling terminal can use the receiving terminal. A transmission step of transmitting outgoing data with one of the telephone numbers as a destination, and a service area in which the receiving terminal is located when the call connection control system receives the outgoing data transmitted in the outgoing step And a communication network to be used as a connection destination by the call connection control system based on the type of the communication network determined in the service area determination step. A connection network selection step of selecting a type of the communication network, and the call connection control system comprising: A connection number determination step for determining a telephone number corresponding to the type of communication network selected in the call selection step, and the call connection control system determines the telephone number of the receiving terminal included in the outgoing data as the connection number determination. A call connection control method comprising: a call connection step of transferring the outgoing data to the communication network selected in the connection network selection step after replacing with the telephone number determined by the means.

  According to the invention described in claims 4 and 5, the call connection control system is a communication network to be used as a connection destination based on information preliminarily managed by the area information storage means and the priority connection destination storage means. The telephone number corresponding to the type of the incoming call is determined, and the telephone number of the receiving terminal included in the outgoing data is replaced with the determined telephone number, and then the outgoing data is transferred to the communication network selected by the connection network selection means. Therefore, even if the telephone number entered by the calling user at the time of outgoing call is different from the determined telephone number, the calling user or the calling terminal is selected by the connection network selection means without performing any special operation or processing. In addition, call connection can be performed efficiently using an appropriate communication network.

  According to the present invention, the telephone number of the receiving terminal included in the outgoing data is replaced with the telephone number determined by the connection number determination means, and then the outgoing data is transferred to the communication network selected by the connection network selection means. Even when the telephone number selected by the calling user at the time of outgoing call is different from the telephone number determined by the connection number determining means, the calling network or the calling terminal does not perform any special operation or processing by the connection network selecting means. Call connections can be made efficiently using the selected appropriate communication network. This eliminates the need for the calling user to enter a different telephone number and perform a call again, improving convenience. In addition, the user can perform incoming processing by preferentially using the communication network desired by the user by registering in advance the type of communication network to be preferentially connected in the preferential connection destination storage means.

Next, embodiments of the present invention will be described with reference to the drawings. In each drawing referred to in the following description, the same reference numerals are given to the same parts as in the other drawings.
[1. Constitution]
[1.1. overall structure]
FIG. 1 is a block diagram showing the overall configuration of a call connection control system 1 according to an embodiment of the present invention. As shown in the figure, the call connection control system 1 includes a location management server 10, a gateway switch 20, a switch 31 that performs call connection control of wireless communication in a mobile phone network 30, and wireless communication in a W-LAN 40. An exchange 41 that performs call connection control and mobile communication terminals 50b and 50c that can communicate via two types of communication networks of the cellular phone network 30 and the W-LAN 40 are configured.

In the following description, the mobile communication terminals 50b and 50c are described as “mobile communication terminal 50” when it is not necessary to distinguish between them. Further, when the mobile communication terminal 50 is a terminal on the receiving side, it is expressed as “incoming terminal 50”.
The located area management server 10, the gateway exchange 20, the exchange 31, the exchange 41, and the mobile communication terminal 50 are configured to include a CPU (Central Processing Unit), a memory, and a communication interface, and are general computer hardware. It has a configuration.

[1.2. Regional management server]
Next, the configuration of the located area management server 10 will be described in detail. The memory of the located area management server 10 stores a program for realizing the function according to the present invention. The function unit shown in FIG. 2 is configured by the functions realized by the CPU of the visited management server 10 executing these programs and the functions of the hardware and software included in the visited management server 10. To be realized. As shown in the figure, the located area management server 10 includes a subscriber information storage unit 11, a visited area information storage unit 12, a priority connection destination storage unit 13, a visited area determination unit 14, and a connection network selection. Unit 15, connection number determination unit 16, and call connection unit 17.

The subscriber information storage unit 11 manages the type of communication network (communication bearer) corresponding to each telephone number that the mobile communication terminal 50 can use.
Here, the “telephone number” is issued by the communication carrier so that the mobile communication terminal 50 can use the communication network when the user who owns the mobile communication terminal 50 subscribes to a certain type of communication network service. Identification number. Further, “available” means that when the mobile communication terminal 50 is located in the service area of the communication network corresponding to the telephone number, it can make / receive calls using the telephone number. To do.

  The subscriber information storage unit 11 holds a number data table shown in FIG. In the number data table, “user” representing an identifier for identifying the user of the mobile communication terminal 50, “mobile phone” representing a telephone number for identifying the mobile communication terminal 50 in the cellular phone network 30, and A data item “W-LAN” representing a telephone number for identifying the mobile communication terminal 50 in the W-LAN 40 is provided. In this number data table, subscriber information managed by each of the communication networks 30 and 40 is collected and registered.

  The area information storage unit 12 manages a telephone number that can be used by the mobile communication terminal 50 and information that represents a communication network corresponding to the service area in which the mobile communication terminal 50 is located. Specifically, the located area information storage unit 12 holds a located area table shown in FIG. In the area table, data items of “user” representing the user identifier of the mobile communication terminal 50 and “area” representing the service area name where the mobile communication terminal 50 is located are provided. The service area name stored in “located” is defined so that the type of the communication network can be determined by the name. For example, an area name including “CS” is an area name of the mobile phone network 30, and an area name including “PS” is an area name of the W-LAN 40.

Information stored in the area table is collected and registered from a location information management server such as an HLR (Home Location Register) or HA (Home Agent) (not shown) provided in each communication network 30 and 40. Is done. Note that a mechanism for uniquely collecting information stored in the area table may be constructed in the area management server 10.
The priority connection destination storage unit 13 stores the type of communication network to be preferentially used when a call connection is made to the mobile communication terminal 50. Specifically, the priority connection destination storage unit 13 holds a priority connection destination table shown in FIG. In the priority connection destination table, data items of “user” representing the user identifier of the mobile communication terminal 50 and “priority connection destination” representing the communication network of the priority connection destination are provided. In this priority connection destination table, information input from the terminal by the user is transmitted and stored according to the user's wish. Alternatively, a certain communication network name is set in advance in the “priority connection destination” of the priority connection destination table in advance, and may be changed from the terminal as desired by the user.

  The located area determination unit 14 receives the outgoing data including the telephone number of the receiving terminal 50 when the originating user inputs the telephone number of the receiving terminal 50 to the calling terminal and makes a call. The type of communication network corresponding to the service area in which the receiving terminal 50 is located is determined based on the area table stored in the area information storage unit 12.

  The connection network selection unit 15 selects the type of the communication network to be connected from the types of communication networks determined by the located area determination unit 14. As a selection method, when the type of the communication network determined by the located area determination unit 14 is one, the connection network selection unit 15 selects the type of the one communication network as it is. In addition, when there are a plurality of types of communication networks determined by the located area determination unit 14, the connection network selection unit 15 selects a priority connection destination based on the priority connection destination table held in the priority connection destination storage unit 13. judge. Note that the connection network selection unit 15 can also determine the type of communication network to which to connect based on other rules and information.

The connection number determination unit 16 is based on the information stored in the subscriber information storage unit 11 and is selected by the connection network selection unit 15 and corresponds to the type of the communication network to be connected to. Determine.
When the telephone number of the receiving terminal included in the outgoing data is different from the telephone number determined by the connection number determining unit 16, the call connecting unit 17 determines the telephone number of the receiving terminal included in the outgoing data as the connection number determination After replacing the telephone number determined by the unit 16, the outgoing data is transferred to the communication network selected by the connection network selection unit 15.

[1.3. Call connection control processing performed by the visited management server]
Next, the flow of call connection control processing in the located area management server 10 will be described with reference to FIG.
Upon receiving outgoing data including the telephone number of the receiving terminal 50 from the calling terminal, the gateway exchange 20 makes an inquiry about the communication network of the connection destination by the telephone number of the receiving terminal 50 to the located area management server 10. Send connection destination inquiry data including outgoing data.
When the visited management server 10 receives the connection destination inquiry data, first, the visited area determination unit 14 of the visited management server 10 determines the user identifier of the receiving terminal 50 from the telephone number of the receiving terminal 50 included in the connection destination inquiry data. Determine. The located area determination unit 14 searches the located area table corresponding to the user identifier from the located area table held by the located area information storage unit 12 to identify the located area of the receiving terminal 50. Then, the located area determination unit 14 determines the type of communication network corresponding to the located area (step S1).

  Next, the connection network selection unit 15 selects the type of communication network to be connected. Specifically, when the type of one communication network is determined in step S1, the connection network selection unit 15 selects the type of the one communication network as it is. On the other hand, when a plurality of types of communication networks are determined in step S1, the connection network selection unit 15 refers to the priority connection destination table held in the priority connection destination storage unit 13, and determines the plurality of communication network types determined in step S1. One type of communication network is selected from the types of communication networks (step S2).

Subsequently, the connection number determination unit 16 determines the type of the communication network selected in step S2 and the user identifier of the receiving terminal 50 from the data stored in the number data table held by the subscriber information storage unit 11. The corresponding connection destination number is acquired and determined (step S3).
When the telephone number of the receiving terminal included in the outgoing data is different from the connection destination number determined by the connection number determination unit 16 in step S3, the call connection unit 17 determines the telephone number of the outgoing data as the connection number determination unit 16 Replace with the determined phone number. The call connection unit 17 transfers the outgoing data to the exchange node of the connection destination communication network. The exchange node of each communication network that has received the outgoing data performs a call connection process (incoming call process) with the receiving terminal 50.
Note that the call connection unit 17 may uniformly replace the telephone number of the receiving terminal 50 included in the outgoing data with the connection destination number determined by the connection number determination unit 16.

[2. Operation]
Next, the operation in the above configuration will be described.
As an example, consider a case where the user A of the fixed telephone 60 makes a call to the receiving terminal 50 located in one of the service areas of the cellular phone network 30 and the W-LAN 40 in the call connection control system 1 shown in FIG. .
As a premise, it is assumed that the subscriber information storage unit 11 of the located area management server 10 holds a number data table in which data shown in FIG. 3 is stored. Further, it is assumed that the located area information storage unit 12 of the located area management server 10 holds a located area table in which data shown in FIG. 4 is stored. Further, it is assumed that the priority connection destination storage unit 13 of the located area management server 10 holds a priority connection destination table in which the priority connection destination data shown in FIG. 5 is stored. In the data stored in the priority connection destination table, the types of communication networks to be preferentially received by the user B or the user C are registered in advance.

[2.1.1 When making a call to a user in a service area of one type of communication network]
Consider a case where the user A of the fixed telephone 60 gives a call instruction to the mobile communication terminal 50c of the user C with the number “090-cccc-cccc”.
First, the user A operates the fixed telephone 60 and inputs the telephone number “090-cccc-cccc”. As a result, the fixed telephone 60 transmits outgoing data including the telephone number “090-cccc-cccc” of the mobile communication terminal (incoming terminal) 50c to the gateway switch 20 on the called side via the fixed network.
The terminating gateway exchange 20 transmits connection destination inquiry data including the transmission data to the located area management server 10 (step S1 in FIG. 6).

Upon receiving the connection destination inquiry data, the located area management server 10 determines from the telephone number of the receiving terminal 50c that the user identifier of the receiving terminal 50c is “C”. The located area determining unit 14 determines a communication network corresponding to the service area in which the receiving terminal 50 c is located, based on the user identifier “C” and the located area table stored in the located area information storage unit 12. To do.
Here, the located area determination unit 14 determines from the located area table that the user C is located in the area “PS-1” covered by the exchange 41 of the W-LAN 40 (step S2).

Since there is only one type of communication network corresponding to the area determined by the located area determination unit 14, the connection network selection unit 15 selects the W-LAN 40 as a connection destination communication network (step S3).
Next, the connection number determination unit 16 determines a telephone number for connecting to the receiving terminal 50c via the W-LAN 40. Specifically, the connection number determination unit 16 obtains a telephone number “050-CCCC-CCCC” for receiving a call to the W-LAN 40 from the number data table shown in FIG. 3 held in the subscriber information storage unit 11. Obtain (step S4).

In the call connection unit 17, the subscriber calling number “090-cccc-cccc” of the receiving terminal 50 c included in the outgoing data is different from the connection destination number “050-CCCC-CCCC” determined by the connection number determination unit 16. Then, the subscriber calling number “090-cccc-cccc” of the receiving terminal 50 c included in the outgoing data is replaced with the connection destination number “050-CCCC-CCCC” determined by the connection number determination unit 16. Then, the call connection unit 17 transfers the replaced outgoing data to the W-LAN 40. The exchange 41 of the W-LAN 40 receives the transferred data and performs incoming processing for the incoming terminal 50c.
In this example, since the user C has only one area, the priority connection data stored in the priority connection destination storage unit 13 is not used.

[2.2. When calling a user in a service area of multiple types of communication networks]
Next, the user A of the fixed telephone 60 inputs the telephone number “090-bbbb-bbbb” of the user B who owns the mobile communication terminal 50b to the fixed telephone 60 and is addressed to the mobile communication terminal (incoming terminal) 50b. Consider a case where an outgoing instruction is issued.
First, the user A operates the fixed telephone 60 and inputs the telephone number “090-bbbb-bbbb”. As a result, the fixed telephone 60 transmits outgoing data including the telephone number “090-bbbb-bbbb” of the receiving terminal 50b to the gateway switch 20 on the called side via the fixed network.
When the destination gateway exchange 20 receives the transmission data, it transmits connection destination inquiry data including the transmission data to the located area management server 10.

  Upon receiving the connection destination inquiry data, the located area management server 10 determines from the telephone number of the receiving terminal 50b that the user identifier of the receiving terminal 50b is “B”. The located area determining unit 14 determines a communication network corresponding to the service area in which the receiving terminal 50 b exists based on the user identifier “B” and the located area table stored in the located area information storage unit 12. (Step S1 in FIG. 6).

Here, as shown in FIG. 4, since user B is in service areas “CS-1” and “PS-1”, the area determination unit 14 determines the communication network corresponding to the service area. Are determined to be the mobile phone network 30 and the W-LAN 40.
Since there are two types of communication networks determined by the area determination unit 14, the connection network selection unit 15 selects one of these communication networks as a connection destination (step S2). Specifically, the connection network selection unit 15 refers to a priority connection destination table held in the priority connection destination storage unit 13 and determines whether the communication network is a priority connection destination. Here, as shown in FIG. 5, since the preferential connection destination registered in advance by the user B is “W-LAN”, the connection network selection unit 15 selects the W-LAN 40 as the connection destination.

The connection number determination unit 16 acquires the number “050-BBBB-BBBB” for receiving a call to the W-LAN 40 from the number data table shown in FIG. 3 held by the subscriber information storage unit 11 (step S3).
In the call connection unit 17, the subscriber calling number “090-bbbb-bbbb” included in the outgoing data is different from the connection destination number “050-BBBB-BBBB” determined by the connection number determining unit 16. Then, the subscriber calling number “090-bbbb-bbbb” of the receiving terminal 50c included in the outgoing data is replaced with the connection destination number “050-BBBB-BBBB” determined by the connection number determination unit 16. Then, the call connection unit 17 transfers the replaced outgoing data to the W-LAN 40. The exchange 41 of the W-LAN 40 receives the transferred data and performs incoming processing for the incoming terminal 50b.

As described above, the user A simply enters one of the telephone numbers that can be transmitted to the mobile communication terminal 50 into the fixed telephone 60 and makes a call. An appropriate communication network to be used when making a call connection to 50 is determined, and a call connection process to the receiving terminal 50 is performed promptly. For this reason, the user A does not need to input a different telephone number again and make a call again. In addition, by registering the priority connection destination in advance, the called user can receive a call using a desired communication network, and can perform highly convenient call connection processing.
In the example described above, an example in which the user A makes a call from the fixed telephone 60 has been described, but the user A may make a call from the mobile communication terminal 50.

[3. Modified example]
Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and various modifications can be made within the scope of the technical idea. As modifications, for example, the following can be considered.
(1) In the embodiment described above, the location management server 10 has been described as having all the functions shown in FIG. 2, but the functions of each device of the call connection control system 1 are not limited to this. For example, as shown in FIG. 7, the area management server 10 includes only the subscriber information storage unit 11, the area information storage unit 12, and the priority connection destination storage unit 13, and the gateway switch 20 is The area determination unit 14, the connection network selection unit 15, the connection number determination unit 16, and the call connection unit 17 may be configured.

In this case, the flow of the call connection process when the destination gateway exchange 20 receives the outgoing data from the outgoing terminal is as shown in the sequence shown in FIG.
First, when receiving the outgoing data from the outgoing terminal, the terminating gateway exchange 20 sends the inquiry data D1 of the area to the area management server 10.
Upon receiving the inquiry data D1, the located area management server 10 determines the type of the communication network corresponding to the area where the receiving terminal 50 is located from the located area table held by the subscriber information storage unit 11, and The area coverage response D2 including the information is returned.

When the gateway switch 20 receives the service area response D2, the service area determination unit 14 of the service switch 20 uses the information included in the service area response D2 to perform communication corresponding to the service area where the receiving terminal 50 is located. The type of network is determined (step S11).
Next, when there are a plurality of types of communication networks corresponding to the service area in which the receiving terminal 50 is located, the connection network selection unit 15 of the gateway exchange 20 obtains inquiry data D3 for inquiring the priority connection destination. Send.

When the visited management server 10 receives the inquiry data D3, it reads out the type of the communication network designated as the priority connection destination of the receiving terminal 50 from the priority connection destination table held in the priority connection destination storage unit 13, and the information Is returned as a priority connection destination response D4.
The connection network selection unit 15 of the gateway exchange 20 selects the type of communication network to be used for call connection based on the information included in the received priority connection destination response D4 (step S12).

Next, the connection number determination unit 16 of the gateway exchange 20 transmits inquiry data D5 for inquiring a telephone number corresponding to the type of the selected communication network.
When receiving the inquiry data D5, the located area management server 10 reads the telephone number of the receiving terminal 50 corresponding to the type of the selected communication network from the number data table held in the subscriber information storage unit 11. The located area management server 10 returns a connection number response D6 including the telephone number.

The connection number determination unit 16 of the gateway exchange 20 determines the connection destination number from the information included in the received connection destination number response D5 (step S13).
If the connection destination number determined in step S13 is different from the telephone number of the receiving terminal 50 included in the outgoing data, the call connection unit 17 of the gateway exchange 20 determines the telephone number of the receiving terminal 50 included in the outgoing data. Is replaced with the connection destination number (step S14). Then, the call connection unit 17 of the gateway exchange 20 transfers the outgoing data D7 toward the communication network selected by the connection network selection unit 15.

(2) Although the mobile communication terminal 50 in the above-described embodiment has been described as being able to use a telephone number corresponding to the mobile phone network 30 and the W-LAN 40, the telephone number that can be used by the mobile communication terminal 50 is this. It is not limited to. For example, the mobile communication terminal 50 may be able to use a telephone number corresponding to a PHS (Personal Handyphone System) communication network.

(3) The number data table held by the subscriber information storage unit 11 in the above-described embodiment, the visited area table held by the visited area information storage unit 12, and the priority connection destination held by the priority connection destination storage unit 13 The data structure of the table is only an example. For example, the “user” that is a data item of each table may be information that can uniquely identify a user of the mobile communication terminal 50 that can use a plurality of telephone numbers. In addition, although “user” is used as a key item of each table (an item for associating data of each table), a telephone number can also be used as a key item. In addition, a communication network name instead of an area name may be stored in “located area” which is a data item of the visited area table.

(4) In the above-described embodiment, the connection network selection unit 15 has been described as selecting a communication network to be used as a connection destination based on the information stored in the priority connection destination storage unit 13. For example, the “priority connection destination” corresponding to the receiving terminal 50 is not stored in the priority connection destination storage unit 13, and there are a plurality of types of communication networks determined by the located area determination unit 14 In this case, a communication network corresponding to the telephone number input by the calling user at the time of calling may be selected as the connection destination.

(5) In the above-described embodiment, the gateway exchange 20 transmits connection destination inquiry data including the telephone number of the receiving terminal 50 to the in-zone management server 10, and the in-zone management server 10 transmits the telephone number of the receiving terminal 50. However, the present invention is not limited to this. For example, when the gateway switch 20 receives outgoing data, the user identifier of the incoming terminal 50 is determined from the telephone number of the incoming terminal 50. Alternatively, connection destination inquiry data including the user identifier and telephone number of the receiving terminal 50 may be transmitted to the location management server 10.

  It can be used for call connection control in a communication network that provides a plurality of radio bearer services.

It is a block diagram which shows the structure of the whole call connection control system which concerns on embodiment of this invention. It is a block diagram which shows the function structure of the located area management server which concerns on the embodiment. It is a figure which shows the data structure of the number data table which the subscriber information storage part which concerns on the embodiment hold | maintains. It is a figure which shows the data structure of the located area table which the located area information storage part which concerns on the same embodiment hold | maintains. It is a figure which shows the data structure of the priority connection destination table which the priority connection destination memory | storage part which concerns on the embodiment hold | maintains. It is a flowchart for demonstrating the flow of the call connection process in the located area management server which concerns on the embodiment. It is a block diagram for demonstrating the function structure of the located area management server and gateway exchange which concern on a modification. It is a sequence chart for demonstrating the flow of the call connection process in the gateway switch which concerns on a modification, and a visited management server.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Location management server 11 Subscriber information storage part 12 Visited area information storage part 13 Preferential connection destination storage part 14 Visited area determination part 15 Connection network selection part 16 Connection number determination part 17 Call connection part 20 Gateway exchange 30 Cellular phone Network 31 Exchange 40 W-LAN
41 Exchanges 50b, 50c, 50 Mobile communication terminals (incoming terminals)

Claims (5)

In a call connection control device for controlling call connection to a mobile communication terminal capable of using a telephone number corresponding to each of a plurality of types of communication networks,
Area determination for determining the type of communication network corresponding to the service area in which the receiving terminal is located when receiving outgoing data including one of the telephone numbers usable by the receiving terminal from the transmitting terminal Means,
A connection network selection unit that selects a communication network to be used as a connection destination based on the type of the communication network determined by the in-service area determination unit;
Connection number determination means for determining a telephone number of the receiving terminal corresponding to a communication network to be used as a connection destination selected by the connection network selection means;
Call connection means for replacing the telephone number of the receiving terminal included in the outgoing data with the telephone number determined by the connection number determination means, and then transferring the outgoing data to the communication network selected by the connection network selection means A call connection control device comprising: Visited area information storage means for storing information indicating the type of communication network corresponding to the service area in which the mobile communication terminal is currently located;
Subscriber information storage means for storing the type of communication network corresponding to each telephone number that can be used by the mobile communication terminal;
When a call connection is made to the mobile communication terminal, the mobile communication terminal further comprises priority connection destination storage means for storing the type of communication network to be preferentially used,
The located area determining means performs the determination based on information stored in the visited area information storing means,
The connection number determination means performs the determination based on information stored in the subscriber information storage means,
The connection network selection means includes:
If there are a plurality of types of communication networks determined by the located area determination unit, the type of the communication network to be used preferentially stored in the priority connection destination storage unit is selected as a connection destination. The call connection control device according to claim 1. In a management server that provides information for selecting a type of a communication network to be used as a connection destination when a call connection is made to a mobile communication terminal that can use a telephone number corresponding to each of a plurality of types of communication networks,
Subscriber information storage means for storing the type of communication network corresponding to each telephone number that can be used by the mobile communication terminal;
Visited area information storage means for storing information indicating the type of communication network corresponding to the service area in which the mobile communication terminal is currently located;
A management server, comprising: priority connection destination storage means for storing a type of a communication network to be preferentially used when a call connection is made to the mobile communication terminal. In a call connection control system for controlling call connection to a mobile communication terminal capable of using a telephone number corresponding to each of a plurality of types of communication networks,
Subscriber information storage means for storing the type of communication network corresponding to each telephone number that can be used by the mobile communication terminal;
Visited area information storage means for storing information indicating the type of communication network corresponding to the service area in which the mobile communication terminal is currently located;
Preferential connection destination storage means for storing the type of communication network to be preferentially used when making a call connection to the mobile communication terminal;
Communication corresponding to the service area in which the receiving terminal is located based on the information stored in the area information storage means when receiving outgoing data including the telephone number of the receiving terminal from the transmitting terminal A location area determination means for determining a network type;
A connection network selection means for selecting a communication network to be used as a connection destination from among the types of communication networks determined by the located area determination means based on information stored in the priority connection destination storage means; ,
Connection number determination means for determining the telephone number of the receiving terminal corresponding to the communication network selected by the connection network selection means based on the information stored in the subscriber information storage means;
Call connection means for replacing the telephone number of the receiving terminal included in the outgoing data with the telephone number determined by the connection number determination means, and then transferring the outgoing data to the communication network selected by the connection network selection means And a call connection control system comprising: In a call connection control method for controlling call connection to a mobile communication terminal that can use telephone numbers corresponding to a plurality of types of communication networks,
A calling step in which the calling terminal transmits the calling data with one of the telephone numbers usable by the receiving terminal as a call destination;
When the call connection control system receives the outgoing data transmitted in the outgoing step, the visiting area determining step for determining the type of communication network corresponding to the service area in which the incoming terminal is located;
A connection network selection step in which the call connection control system selects a type of communication network to be used as a connection destination based on the type of communication network determined in the area coverage determination step;
A connection number determination step in which the call connection control system determines a telephone number corresponding to the type of the communication network selected in the communication network selection step;
The call connection control system replaces the telephone number of the receiving terminal included in the outgoing data with the telephone number determined by the connection number determination means, and then selects the communication selected in the connection network selection step. A call connection control method comprising: a call connection step of transferring to a network.

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