JP2012216934A - Administrative server, communication system, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply a discount service when a user to whom the discount service of a communication fee should be applied has used a mobile communication terminal in the case that the same subscriber subscribes for a plurality of mobile communication terminals.SOLUTION: A communication request acquisition unit 1111 acquires a communication request transmitted by a first mobile communication terminal. A terminal identifying unit 1112 identifies a second mobile communication terminal whose subscriber is the same as a first mobile communication terminal, by referring to a subscriber information database when the communication request acquisition unit 1111 acquires the communication request. A positional relation determining unit 1113 determines the positional relation between the first and second mobile communication terminals identified by the terminal identifying unit 1112. For example, the positional relation determining unit 1113 determines a cell where the first and second mobile communication terminals are located. A permission unit 1114 permits communication to which the discount service of a communication fee is applied if a close condition is satisfied indicating that the positional relation determined by the positional relation determining unit 1113 shows the first and second mobile communication terminals being close.

Description

  The present invention relates to a communication charge discount service for mobile communication terminals.

  A telecommunications carrier may provide a discount service for a communication fee to a subscriber for the purpose of popularizing mobile communication terminals such as mobile phones and smartphones and promoting the use of mobile communication terminals. For example, Patent Document 1 uses a discount service based on a group discount contract for a mobile phone usage fee, so that the mobile phone usage fee of a member of a group that is a subscriber is lower than the discount service for an individual contract. A mechanism to do this is disclosed.

JP 2005-85099 A

By the way, one user may own a plurality of mobile communication terminals for the reason of using different mobile communication terminals for different purposes. In this case, the same subscriber subscribes to a plurality of mobile communication terminals. On the other hand, a telecommunications carrier provides a discount service that discounts communication charges such as basic charges to subscribers who have subscribed to two or more mobile communication terminals of their company, thereby further increasing the subscription contract. Can be expected to promote. However, there are cases where a subscriber who has subscribed to a plurality of mobile communication terminals cannot technically determine the situation in which some of the terminals are used by others. Therefore, it may be difficult for a telecommunications carrier to introduce such a discount service. For example, in the technique described in Patent Document 1, a discount service based on a group discount contract is applied without determining whether a person who actually uses a mobile phone is a subscriber.
Therefore, an object of the present invention is to apply a discount service when a person to whom a discount service for a communication fee should be applied uses a mobile communication terminal when the same subscriber subscribes to a plurality of mobile communication terminals. Is to provide a mechanism to do this.

  In order to solve the above-described problem, the management server of the present invention includes a communication request acquisition unit that acquires a communication request transmitted by a first mobile communication terminal, and when the communication request acquisition unit acquires the communication request, A terminal specifying unit for specifying a second mobile communication terminal having the same subscriber as the one mobile communication terminal, and the first and second mobile communication terminals specified by the terminal specifying unit as those of the same subscriber If the positional relationship specified by the positional relationship specifying unit and the positional relationship specified by the positional relationship specifying unit satisfy a predetermined proximity condition indicating that the first and second mobile communication terminals are close, And a permission unit that permits communication by discounting a communication charge imposed on the subscriber than when the proximity condition is not satisfied.

In the management server of the present invention, the position specifying information acquisition for acquiring the received radio wave intensity from the base station and the base station ID for identifying the base station in the first and second mobile communication terminals communicating with the base station The positional relationship specifying unit specifies the positional relationship between the first and second mobile communication terminals determined by the base station ID acquired by the location specifying information acquisition unit and the intensity of the received radio wave, and the permission The unit sets the positional relationship indicating that the distance between the first and second mobile communication terminals is less than a threshold as the proximity condition, and the positional relationship specified by the positional relationship specifying unit satisfies the proximity condition In addition, communication with a discount on the communication charge may be permitted.
In this configuration, the base station is configured with a plurality of sectors corresponding to the directions in which the received radio waves are transmitted, and the position specifying information acquisition unit is configured to store the received radio wave intensity and the base station ID. In addition, a sector ID for identifying the sector corresponding to the antenna that transmitted the received radio wave is acquired, and the positional relationship specifying unit is based on the base station ID, the sector ID, and the reception intensity acquired by the location specifying information acquiring unit. And calculating the distance between the first and second mobile communication terminals after calculating the positions of the first and second mobile communication terminals in the sector, respectively, and specifying the distance as the positional relationship. Also good.

  In the management server of the present invention, the first and second mobile communication terminals communicate with a base station, and the positional relationship specifying unit specifies a base station with which the first and second mobile communication terminals communicate, The permission unit may allow the first and second mobile communication terminals to communicate with the common base station as the proximity condition, and permit communication with a discount on the communication fee when the proximity condition is satisfied. Good.

The management server of this invention WHEREIN: The said positional relationship specific | specification part may specify the said positional relationship for every predetermined period during the period when the said 1st mobile communication terminal communicates.
In the management server of the present invention, the permission unit may not allow communication according to the communication request when the positional relationship does not satisfy the proximity condition.

  A communication system according to the present invention includes a first mobile communication terminal, a second mobile communication terminal, and a management server, wherein the management server acquires a communication request transmitted by the first mobile communication terminal. And when the communication request acquisition unit acquires the communication request, the first mobile communication terminal and the second mobile communication terminal that has the same subscriber are the same as the terminal specifying unit and the terminal specifying unit. A positional relationship specifying unit that specifies the positional relationship of the first and second mobile communication terminals specified as that of the subscriber, and the positional relationship specified by the positional relationship specifying unit is the first and second mobile And a permission unit that permits communication with discounted communication charges imposed on the subscriber when the communication terminal satisfies a predetermined proximity condition indicating that the communication terminal is close than when the proximity condition is not satisfied. The features.

  The program according to the present invention includes a communication request acquisition step for acquiring a communication request transmitted by a first mobile communication terminal, and a subscription to the first mobile communication terminal when the communication request is acquired in the communication request acquisition step. A terminal specifying step for specifying a second mobile communication terminal with the same contractor, and a positional relationship between the first and second mobile communication terminals specified as those of the same subscriber in the terminal specifying step When the positional relationship specifying step and the positional relationship specified in the positional relationship specifying step satisfy a predetermined proximity condition indicating that the first and second mobile communication terminals are close to each other, the proximity condition is not satisfied And a step of permitting communication with discounted communication charges imposed on the subscriber.

  According to the present invention, when the same subscriber subscribes to a plurality of mobile communication terminals, the discount service is applied when the person to whom the communication fee discount service should be applied uses the mobile communication terminal. Can do.

The block diagram which shows the structure of a communication system. The block diagram which shows the hardware constitutions of a management server. The figure which shows the data structure of subscriber information. The figure which shows the data structure of accounting data. The block diagram which shows the structure of a 1st mobile communication terminal. The functional block diagram which shows the functional structure of the control part of a management server. The figure which represents typically the relationship between the installation place of a base station, and a cell. The sequence chart which shows the operation | movement procedure in a communication system. The figure which represents typically the relationship between the installation place of a base station, and a cell. The figure explaining proximity | contact condition. The functional block diagram which shows the functional structure of the control part of a management server. The sequence chart which shows the operation | movement procedure in a communication system.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
A first embodiment of the present invention will be described.
FIG. 1 is a block diagram showing the configuration of the communication system 1. As shown in FIG. 1, the communication system 1 includes a mobile communication network 100 and a plurality of mobile communication terminals 200 accommodated in the mobile communication network 100. The mobile communication network 100 is a communication network that conforms to, for example, IMT-2000 and uses W-CDMA (Wideband-Code Division Multiple Access) as a communication method. The mobile communication network 100 provides a communication service and a data communication service using packet communication to the mobile communication terminal 200 owned by a person who has subscribed to a communication carrier that operates the mobile communication network 100. The mobile communication terminal 200 is a wireless communication terminal that performs wireless communication according to the IMT-2000 communication standard.

FIG. 1 shows a first mobile communication terminal 200 a and a second mobile communication terminal 200 b among a plurality of mobile communication terminals 200. The first mobile communication terminal 200a and the second mobile communication terminal 200b are subscribed by the same subscriber. That is, the first mobile communication terminal 200a and the second mobile communication terminal 200b are to be used by users who are essentially the same subscribers. Whether or not the subscribers are the same is determined according to the rules established by the telecommunications carrier when, for example, a person who desires a subscription contract applies for the subscription contract, and the related subscriber information is described later. It is determined by being registered in the DB 140. Depending on the contents of the provision, for example, the mobile communication terminal 200 subscribed in the name of an individual and the mobile communication terminal 200 subscribed in the name of a corporation to which the individual belongs are treated as the same subscriber. There may be cases. That is, when subscribers of a plurality of mobile communication terminals 200 are the same, their names are not necessarily the same.
The first mobile communication terminal 200a is assumed to be used as a sub-terminal of the subscriber and is a smartphone here. The second mobile communication terminal 200b is used as a subscriber's main terminal, and is a mobile phone terminal here. Information indicating whether each mobile communication terminal 200 is a main terminal or a sub-terminal is also managed on the mobile communication network 100 side as described later. One mobile communication terminal 200 as a main terminal is provided for each subscriber, and the other mobile communication terminals 200 are sub-terminals.

  The mobile communication network 100 includes a management server 110, an exchange network 120 having a plurality of exchanges 121, a base station 130, a subscriber information DB (Data Base) 140, and a charging server device 150. In FIG. 1, only one of the exchanges 121 included in the exchange network 120 is shown to prevent the drawing from becoming complicated. FIG. 1 shows only the base stations 130 a to 130 c among the base stations 130 connected to the exchange 121.

The management server 110 is a server device that manages communication via the mobile communication network 100. The management server 110 performs control for establishing a communication channel via the mobile communication network 100, location registration control for the mobile communication terminal 200, and the like.
The exchange network 120 is a network in which a plurality of exchanges 121 are connected. The exchange 121 is connected to one or a plurality of base stations 130. The exchange 121 realizes a circuit switching function and a packet switching function in response to a communication request acquired from the mobile communication terminal 200 located in a wireless area (that is, a cell) covered by the base station 130 connected to the exchange 121. . The cell defined by the base station 130 is a wireless area that covers a range of several hundred m to several Km in radius called a macro cell.
The base station 130 is a wide area base station installed in the communication service area of the mobile communication network 100, and performs radio communication with the mobile communication terminal 200 located in its own cell.
The subscriber information DB 140 is a database that stores information on subscribers who have signed a subscription with a communication carrier that operates the mobile communication network 100.
The billing server device 150 is a server device that stores billing data 151 in which the communication fee charged to each subscriber is described for each subscriber and manages the communication fee using the billing data 151. The billing server device 150 acquires, for example, the calculation result of the communication charge performed by integrating the type of communication service performed by the exchange 121, the communication time, the communication distance, etc., and makes it a subscriber for each mobile communication terminal 200. Memorize the communication charges imposed.

  FIG. 2 is a block diagram illustrating a hardware configuration of the management server 110. The management server 110 includes a control unit 111, a communication unit 112, and a communication network interface 113. The control unit 111 includes an arithmetic device including a CPU (Central Processing Unit) and a memory, and controls the operation of each unit of the management server 110 by executing a program. The communication unit 112 is an interface for connecting to the exchange network 120. The communication unit 112 communicates with the mobile communication terminal 200 via the exchange network 120 and the base station 130. The communication network interface 113 communicates with the subscriber information DB 140 and the billing server device 150 via the exchange network 120.

FIG. 3 is a diagram showing a data structure of subscriber information stored in the subscriber information DB 140. As shown in FIG. 3, the subscriber information has a structure in which “subscriber ID”, “terminal ID”, “area ID”, and “main / sub terminal” are associated with each other. The subscriber ID is identification information for identifying each mobile communication terminal 200. If there are a plurality of subscriber information including a common subscriber ID in the subscriber information DB 140, these are subscriber information related to the same subscriber. The terminal ID is identification information that identifies each mobile communication terminal 200. The terminal ID is represented by a 4-digit numerical value here, but terminal identification information specified by a SIM (Subscriber Identity Module) card or the like, a telephone number assigned to each mobile communication terminal 200, or the like can be used. The terminal ID “0001” shown in FIG. 3 identifies the first mobile communication terminal 200a, and the terminal ID “0002” identifies the second mobile communication terminal 200b. The area ID is identification information for identifying an area where the mobile communication terminal 200 is located (hereinafter referred to as “location registration area”), which is specified by the location registration control performed by the management server 110. In location registration control, the management server 110 receives a location registration request signal transmitted from the mobile communication terminal 200. This location registration request signal includes a terminal ID that identifies the source mobile communication terminal 200 and an area ID that identifies the location registration area where the mobile communication terminal 200 is located. The management server 110 stores the area ID in a home memory (not shown) in association with the terminal ID and performs location registration control. During this location registration control, the management server 110 also rewrites the area ID of the subscriber information DB 140. “Main / sub terminal” indicates whether each mobile communication terminal 200 is a main terminal or a sub terminal of a subscriber. Here, it is assumed that the mobile communication terminal 200 to which each subscriber first subscribes becomes a main terminal, and the other mobile communication terminals 200 become sub-terminals.
Note that whether each mobile communication terminal 200 is a main terminal or a sub-terminal may be determined by a subscriber, for example, and the determination method is arbitrary.

  According to the subscriber information shown in FIG. 3, the subscriber identified by the subscriber ID “USER01” has subscribed to the first mobile communication terminal 200a and the second mobile communication terminal 200b. Both the first mobile communication terminal 200a and the second mobile communication terminal 200b are located in the location registration area identified by the area ID “AREA-1”. For example, when the user carries both the first mobile communication terminal 200a and the second mobile communication terminal 200b, the area IDs in the subscriber information match. The subscribers identified by the subscriber IDs “USER02” and “USER03” are different from the subscribers identified by the subscriber ID “USER01”, respectively. The mobile communication terminals 200 identified by the terminal IDs “0003” and “0004” are the main terminals.

FIG. 4 is a diagram showing a data structure of billing data 151 stored in billing server device 150. The billing server device 150 classifies the billing amount in the billing data 151 by classifying each type of communication such as a call or data communication. For simplicity of explanation, FIG. 4 shows the communication for each mobile communication terminal 200. Only the total price is shown.
The billing data 151 has a structure in which “terminal ID” and “communication charge” are associated with each other. The terminal ID is the same as that described in the subscriber information DB 140, and identifies each mobile communication terminal 200. The communication fee represents a charge amount imposed on the subscriber of the mobile communication terminal 200 indicated by the associated terminal ID. The communication fee charged to the subscriber of the mobile communication terminal 200 with each terminal ID shown in FIG. 4 is determined based on the following grounds.

  First, it is assumed that the subscribers of the mobile communication terminals 200 with the terminal IDs “0001”, “0002”, and “0003” have subscribed to a fee plan with a fixed communication fee of “¥ 4000”. As described above, the subscribers of the mobile communication terminals 200 with the terminal IDs “0001” and “0002” are the same, and a plurality of mobile communication terminals 200 are subscribed. For such subscribers, a communication service discount service is applied by the communication carrier. Here, a discount service is applied in which the communication fee of the sub-terminal is discounted at a predetermined discount rate (here, 2 discounts). Therefore, as shown in FIG. 4, the communication fee charged to the subscriber of the mobile communication terminal 200 with the terminal ID “0001” is “¥ 3200”, which is a discount of ¥ 4000. On the other hand, since the mobile communication terminals 200 with the terminal IDs “0002” and “0003” are main terminals, the discount service is not applied, and the communication fee is “¥ 4000”. A subscriber of the mobile communication terminal 200 with the terminal ID “0004” subscribes to a rate plan that adopts a pay-as-you-go system in which a communication fee is added according to the amount of communication when the communication exceeds a certain amount of communication. Suppose you have a contract. In the billing data 151 shown in FIG. 4, “¥ 4400” is described as the communication fee charged to the subscriber of the mobile communication terminal 200 with the terminal ID “0004”.

FIG. 5 is a block diagram showing a configuration of the first mobile communication terminal 200a. As shown in FIG. 5, the first mobile communication terminal 200 a includes a control unit 201, a voice input / output unit 202, a wireless communication unit 203, a UI (User Interface) unit 204, and a storage unit 205.
The control unit 201 includes an arithmetic device including a CPU and a memory, and controls the operation of each unit of the first mobile communication terminal 200a by executing a program. The voice input / output unit 202 includes a microphone that collects received voice, a speaker that emits transmitted voice, and the like, and realizes functions related to voice input / output. The wireless communication unit 203 includes a wireless communication circuit and an antenna, and is an interface for connecting to the mobile communication network 100. The UI unit 204 receives an operation from the user through the touch panel and notifies information by an image displayed on the display surface. The storage unit 205 includes, for example, an EEPROM (Electronically Erasable and Programmable ROM) and stores various data.
The second mobile communication terminal 200b has a hardware configuration equivalent to that of the first mobile communication terminal 200a, except that an operation unit that receives user operations and a display unit that displays an image on the display surface are provided separately. You can consider it to be.

FIG. 6 is a functional block diagram illustrating a functional configuration of the control unit 111 of the management server 110. The control unit 11 implements functions corresponding to the communication request acquisition unit 1111, the terminal identification unit 1112, the positional relationship identification unit 1113, and the permission unit 1114 by executing the program. Hereinafter, a functional configuration when the first mobile communication terminal 200a, which is a sub terminal, makes a communication request to the mobile communication network 100 will be described.
When the communication request message transmitted from the first mobile communication terminal 200a is received by the communication unit 112 via the base station 130 and the exchange network 120, the communication request acquisition unit 1111 acquires the received communication request message. The communication request message is a message transmitted when the mobile communication terminal 200 requests the mobile communication network 100 to establish a communication channel and start communication using the communication channel. The communication request message is for requesting establishment of a communication channel for voice communication and data communication, for example.

  When the communication request acquiring unit 1111 acquires the communication request message, the terminal specifying unit 1112 specifies the mobile communication terminal 200 having the same subscriber as the first mobile communication terminal 200a that has transmitted the communication request message. The terminal specifying unit 1112 specifies the mobile communication terminal 200 identified by the terminal ID stored in the subscriber information DB 140 in association with the terminal ID for identifying the first mobile communication terminal 200a. According to the subscriber information DB 140 shown in FIG. 4, the terminal specifying unit 1112 specifies the second mobile communication terminal 200b.

  The positional relationship specifying unit 1113 specifies the positional relationship between the first mobile communication terminal 200a and the second mobile communication terminal 200b specified by the terminal specifying unit 1112 as those of the same subscriber. Here, the positional relationship specifying unit 1113 specifies the positional relationship between both terminals by specifying the base station 130 with which the first mobile communication terminal 200a and the second mobile communication terminal 200b communicate. The positional relationship specifying unit 1113 specifies the base station 130 with which the first mobile communication terminal 200a and the second mobile communication terminal 200b communicate with reference to the base station ID added to the signal received from each mobile communication terminal 200. .

  When the positional relationship specified by the positional relationship specifying unit 1113 satisfies a predetermined proximity condition indicating that the mobile communication terminals 200 are close to each other, the permission unit 1114 permits communication using a communication fee discount service. To do. The proximity condition is determined in advance as a condition indicating that the positions of the first mobile communication terminal 200a and the second mobile communication terminal 200b are close to some extent. Specifically, the proximity condition indicates that the first mobile communication terminal 200a and the second mobile communication terminal 200b communicate with the common base station 130. When the permission unit 1114 determines that the proximity condition is satisfied, the communication unit 112 communicates with the switch 121 of the switching network 120 by the communication unit 112, and transmits a permission signal indicating permission of communication according to the communication request message to the switch 121. When receiving the permission signal transmitted from the permission unit 1114, the exchange 121 establishes a communication channel according to the communication request message. The first mobile communication terminal 200a starts communication via the mobile communication network 100 using the communication channel established by the exchange 121. When the permission unit 1114 determines that the proximity condition is not satisfied, the permission unit 1114 transmits a non-permission signal indicating that communication according to the communication request message is not permitted to the exchange 121. When receiving the non-permission signal transmitted from the permission unit 1114, the exchange 121 does not establish a communication channel according to the communication request message.

Here, the reason why the management server 110 determines whether the establishment of the communication channel according to the communication request message is permitted or not based on the positional relationship between the plurality of mobile communication terminals 200 having the same subscriber. Will be described.
FIG. 7 is a diagram schematically illustrating the relationship between the installation location of the base station 130 and the cell. Here, it is assumed that base stations 130a to 130c are installed in the location registration area identified by the area ID “AREA-1.”
As shown in FIG. 7, the location registration area includes a cell a determined by the base station 130a, a cell b determined by the base station 130b, and a cell c determined by the base station 130c. When the position of the first mobile communication terminal 200a (position indicated by “★”) and the position of the second mobile communication terminal 200b (position indicated by “☆”) are within the same cell a, both terminals The management server 110 permits the establishment of a communication channel on the assumption that the positional relationship satisfies the proximity condition. For example, when both the first mobile communication terminal 200a and the second mobile communication terminal 200b are in the hands of a user who is the same subscriber, the possibility of satisfying this proximity condition is quite high. In this case, the possibility that the subscribers of the first mobile communication terminal 200a and the second mobile communication terminal 200b have one of the terminals used by others is low because both terminals are close to each other. Conceivable.

On the other hand, as in the case where the position of the first mobile communication terminal 200a is in the cell a and the position of the second mobile communication terminal 200b is in the cell b or the cell c (the position indicated by “(☆)”), When these are in different cells, the first mobile communication terminal 200a and the second mobile communication terminal 200b do not satisfy the proximity condition. When the proximity condition is not satisfied, both terminals are at a distance away from each other, and there is a high possibility that the first mobile communication terminal 200a and the second mobile communication terminal 200b are not in the hands of the same user. In this case, there is a possibility that the subscribers of the first mobile communication terminal 200a and the second mobile communication terminal 200b have another person use one of the terminals. When a communication fee discount service is applied when such use is performed, a communication provider provides a discount service as a privilege for one user to use a plurality of mobile communication terminals 200. The management server 110 does not permit communication to which the discount service is applied because it is contrary to the spirit of the discount service of the present embodiment. That is, the management server 110 does not apply the discount service by not establishing a communication channel.
Next, the operation of the communication system 1 will be described.

FIG. 8 is a sequence chart showing an operation procedure in the communication system 1. Hereinafter, the operation when the first mobile communication terminal 200a, which is a sub terminal, makes a communication request to the mobile communication network 100 will be described.
It is assumed that the user of the first mobile communication terminal 200a desires to make a call, operates the UI unit 204, specifies a call partner from the address book, and operates a soft button that specifies the start of the call. In response to this operation, the control unit 201 transmits a communication request message for requesting establishment of a communication channel for voice communication by the wireless communication unit 203 (step SA1). Here, when the first mobile communication terminal 200a is located at the position indicated by “★” in FIG. 7, the base station 130a receives the communication request message from the first mobile communication terminal 200a. The communication request message includes the terminal ID indicating the first mobile communication terminal 200a that is the transmission source of the communication request message and the base station ID of the base station 130a with which the first mobile communication terminal 200a communicates.

  The control unit 111 of the management server 110 receives the communication request message by the communication unit 112 via the base station 130a and the exchange network 120 and acquires it. Next, the control unit 111 determines whether or not the first mobile communication terminal 200a that is the transmission source of the communication request message is a sub-terminal (step SA2). Here, the control unit 111 specifies a terminal ID (here, “0001”) included in the communication request message, and sends a notification request indicating whether the mobile communication terminal 200 with this terminal ID is a main terminal or a sub terminal. The data is transmitted to the subscriber information DB 140 through the network interface 113. When receiving the notification request, the subscriber information DB 140 refers to the “main / sub terminal” of the subscriber information including the terminal ID “0001” specified in the notification request. Then, the subscriber information DB 140 transmits to the management server 110 a notification as to whether the mobile communication terminal 200 with the terminal ID specified in the notification request is the main terminal or the sub terminal.

When the control unit 111 of the management server 110 determines that the first mobile communication terminal 200a that is the transmission source of the communication request message is a sub-terminal in response to the notification received from the management server 110 by the communication network interface 113 (step SA2). YES), the base station 130 with which the first mobile communication terminal 200a communicates is specified (step SA3). Here, the control unit 111 specifies that the first mobile communication terminal 200a communicates with the base station 130a with reference to the base station ID included in the communication request message.
Next, the control unit 111 identifies the mobile communication terminal 200 having the same subscriber as the first mobile communication terminal 200a based on the subscriber information DB 140 (step SA4). Here, the control unit 111 designates the terminal ID “0001” of the first mobile communication terminal 200 a and sends a notification request of the mobile communication terminal 200 having the same subscriber to the subscriber by the communication network interface 113. It transmits to information DB140. Upon receiving the notification request, the subscriber information DB 140 transmits subscriber information having the same subscriber ID as the terminal ID “0001” specified in the notification request to the first mobile communication terminal 200a. In the subscriber information DB 140, the subscriber ID associated with the terminal ID “0001” is “USER01”, and the terminal IDs associated with the subscriber ID “USER01” are “0001” and “0002”. is there. Therefore, the subscriber information DB 140 transmits subscriber information including terminal IDs “0001” and “0002” to the management server 110.

Next, based on the subscriber information received from the subscriber information DB 140, the management server 110 receives an incoming call to the first mobile communication terminal 200a and the second mobile communication terminal 200b designated to be the same as the subscriber. A request is transmitted (step SA5). At this time, the control unit 111 identifies the location registration area where the second mobile communication terminal 200b is located based on the subscriber information, and passes through the base station 130 in the location registration area to the second mobile communication terminal 200b. Send an incoming call request.
At this point in time, it is unknown which base station 130 in the location registration area the second mobile communication terminal 200b is located in a cell.

  When receiving the incoming call request, the second mobile communication terminal 200b communicates with the base station 130 of the cell in which the second mobile communication terminal 200b is located and transmits a response signal (step SA6). This response signal includes identification information (here, the terminal ID) for identifying the second mobile communication terminal 200b that is the transmission source. Second mobile communication terminal 200b communicates with base station 130 that is the transmission source of the received radio wave having the highest intensity among the received radio waves from base station 130. Therefore, when the 2nd mobile communication terminal 200b is located in the position shown by "*" in FIG. 7, the 2nd mobile communication terminal 200b transmits a response signal to the base station 130a.

The control unit 111 of the management server 110 receives a response signal to which the base station ID indicating the base station 130 a is added by the communication unit 112 via the exchange network 120 including the base station 130 and the exchange 121.
Next, the control unit 111 identifies the base station with which the second mobile communication terminal 200b has communicated based on the received response signal (step SA7). The control unit 111 refers to the base station ID included in the response signal and specifies that the second mobile communication terminal 200b communicates with the base station 130a.

Next, the control unit 111 determines whether or not the first mobile communication terminal 200a and the second mobile communication terminal 200b are located in the same cell (step SA8). When this condition is satisfied, the first mobile communication terminal 200a and the second mobile communication terminal 200b satisfy the proximity condition. As described above, the proximity condition is determined on the assumption that the distance between terminals is within approximately 500 m to 1 km. Therefore, if the first mobile communication terminal 200a and the second mobile communication terminal 200b are located in the same cell, it is estimated that the distance between terminals is approximately within this distance range.
Here, since both the first mobile communication terminal 200a and the second mobile communication terminal 200b are located in the cell a, the control unit 111 determines “YES” in the process of step SA8. And the control part 111 permits the communication which applied the discount service of the communication charge according to the communication request message received from the 1st mobile communication terminal 200a by the process of step SA1 (step SA9). Here, the control unit 111 transmits a permission signal permitting establishment of a communication channel to the exchange 121 of the exchange network 120. The exchange 121 transmits an incoming call request to a call destination serving as a communication partner in response to reception of the permission signal from the management server 110. When there is a response from the call destination, the exchange 121 establishes a communication channel for voice communication between the first mobile communication terminal 200a and the call destination, and performs voice communication using this communication channel.
Although voice communication has been described as an example here, the procedure for establishing a communication channel is the same for data communication.

By the way, in the process of step SA8, when the control unit 111 determines that the first mobile communication terminal 200a and the second mobile communication terminal 200b are not located in the same cell (step SA8; NO), the control unit 111 responds to the communication request message. Do not allow the establishment of a communication channel. That is, the control unit 111 transmits a non-permission signal indicating that establishment of a communication path is not permitted to the exchange 121 of the exchange network 120. The exchange 121 that has received the non-permission signal does not establish a communication channel in accordance with the communication request message.
In this case, the control unit 111 may notify the first mobile communication terminal 200a of a message indicating that the communication channel could not be established. For example, the control unit 111 causes the communication unit 112 to transmit a control signal for displaying the message “Could not be connected” to the UI unit 204 of the first mobile communication terminal 200a. The user who sees this message displayed on the first mobile communication terminal 200a may confirm that the second mobile communication terminal 200b is at hand and try to establish a communication channel again.

  In addition, when the control unit 111 determines in step SA2 that the transmission source of the communication request message is the main terminal (step SA2; NO), the control unit 111 proceeds to step SA9 and permits communication. That is, when the control unit 111 receives a communication request message from the main terminal, the control unit 111 permits communication regardless of the positional relationship between the main terminal and the sub-terminal of the same subscriber. This is because the communication carrier does not provide a discount service for communication charges for communication performed by the main terminal.

  If the control unit 111 determines in the process of step SA4 that the location registration area of the second mobile communication terminal 200b is different from that of the first mobile communication terminal 200a, the control unit 111 skips the processes of steps SA5 to SA7. It may be determined as “NO” in the process of step SA8 and the establishment of the communication channel may not be permitted. This is because when the location registration areas are different, the first mobile communication terminal 200a and the second mobile communication terminal 200b are not located in the same cell.

  According to the first embodiment described above, the management server 110 of the mobile communication network 100 uses the communication channel as a proximity condition that a plurality of mobile communication terminals 200 having the same subscriber are located in the same cell. Permission or disapproval of establishment is determined, and control according to the determination is performed. As a result, it is possible to determine when these mobile communication terminals 200 are lent to other users, and to suppress the possibility that the discount service is illegally applied. Can be reduced. In this way, according to the mobile communication network 100 of the communication system 1, the discount service can be applied when the person to whom the discount service for the communication fee is to be applied uses the mobile communication terminal 200. Further, according to this configuration, it is not necessary to introduce a large-scale facility in the conventional communication system, and the management server 110 can grasp the positional relationship of these mobile communication terminals 200 using the existing base station 130. Therefore, it is possible to suppress an increase in installation and operation costs.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.
The communication system 1 of the second embodiment is different from the first embodiment described above in the configuration for specifying the positional relationship between a plurality of mobile communication terminals 200 having the same subscriber. In the following description, the overall configuration of the communication system 1 and the hardware configuration of each device are common to the first embodiment. In addition, among the configurations of the communication system 1 according to the present embodiment, those common to the first embodiment are denoted by the same reference numerals, and description and illustration of each configuration will be omitted as appropriate.

FIG. 9 is a diagram schematically illustrating the relationship between the installation location of the base station 130 and the cell. Here, the base stations 130a to 130c located in the location registration area identified by the area ID “AREA-1” are illustrated.
As shown in FIG. 9, it is assumed that there is a cell a determined by the base station 130a, a cell b determined by the base station 130b, and a cell c determined by the base station 130c. The cells a, b, and c are partially overlapped with each other. Here, the position of the first mobile communication terminal 200a (position shown by “★”) is in the cell a, and the position of the second mobile communication terminal 200b (position shown by “☆”) is in the cell b. To do. In this case, although the distance between both terminals is close, the first mobile communication terminal 200a communicates with the base station 130a, and the second mobile communication terminal 200b communicates with the base station 130b. Different. Which base station 130 is a communication partner depends not only on the position of the mobile communication terminal 200 but also on the intensity of the radio wave transmitted by the base station 130, the transmission direction thereof, the installation location of the base station 130 and the like. Therefore, it is considered that the method of referring only to the cell where the mobile communication terminal 200 is located may not be able to accurately grasp the degree of proximity of both terminals.

FIG. 10 is a diagram for explaining the proximity condition in this embodiment.
Base station 130 is divided into sectors, and a plurality of sectors are set corresponding to each direction in which radio waves are transmitted. As shown in FIG. 10, the cell determined by the base station 130 is divided into three sectors. Here, it is assumed that the cell of the base station 130a is equally divided into sectors sa1, sa2, and sa3 as shown, and the cell of the base station 130b is equally divided into sectors sb1, sb2, and sb3 as shown. The sector antenna provided corresponding to each sector is an antenna having directivity with the direction indicated by the arrows Da1 to Da3 and Db1 to Db3 as the directional center.

First, by referring to the signal received by the mobile communication terminal 200 from the sector antenna, it is possible to grasp in which sector the mobile communication terminal 200 is located. That is, it is possible to grasp in which direction the mobile communication terminal 200 is located with respect to the base station 130. Note that the base station 130 transmits a sector ID for identifying a sector antenna together with the base station ID. By referring to this sector ID, it is possible to specify from which sector antenna the mobile communication terminal 200 has received the radio wave.
Second, the radio wave received by the mobile communication terminal 200 from the base station 130 gradually attenuates as the distance from the base station 130 increases. That is, as the mobile communication terminal 200 moves away from the base station 130, the intensity of the received radio wave from the sector antenna decreases. Therefore, by referring to the reception strength of the radio wave from the sector antenna in the mobile communication terminal 200, it is possible to grasp how far the mobile communication terminal 200 is from the base station 130. For example, it can be considered that the reception intensity of radio waves decreases in proportion to the square of the distance from the base station 130. If at least the intensity of the radio wave transmitted by the sector antenna and the reception intensity of the radio wave at mobile communication terminal 200 are known, the distance of mobile communication terminal 200 from base station 130 can be estimated.

  As described above, it is possible to calculate the terminal position of the mobile communication terminal 200 by referring to which sector antenna the mobile communication terminal 200 receives radio waves and to what extent the reception intensity is. . However, the radio wave reception intensity changes according to the distance from the sector antenna, and the mobile communication terminal 200 calculates the terminal position using a set of base station ID, sector ID, and reception intensity data set. In this method, for example, the terminal position is calculated in the band-like areas as indicated by the band-like areas T1 and T2 in FIG. However, as in the first embodiment described above, in order to determine whether or not to apply the discount service, the proximity between the terminals of the plurality of mobile communication terminals 200 subscribed by one subscriber is within about 500 m to 1 km. Considering that it is sufficient to determine whether or not the condition is satisfied, it can be said that it is sufficient to obtain this band-like region.

As shown in FIG. 10, for example, the first mobile communication terminal 200a is located in the sector sa1, the terminal position of the band-like area T1 is calculated, the second mobile communication terminal 200b is located in the sector sb2, and the band-like area T2 Is calculated. In this case, for example, the distance between the centers of gravity of the belt-like regions may be used as the inter-terminal distance. In this case, in light of the size of the macro cell, the first mobile communication terminal 200a and the second mobile communication terminal 200b may be regarded as satisfying the proximity condition. On the other hand, even if each mobile communication terminal 200 communicates with the same base station 130, if the reception strength from different sector antennas is larger or the reception strength is considerably smaller, the proximity condition Is considered not to satisfy. For example, when the first mobile communication terminal 200a is located in the area T3 shown in FIG. 10 or the second mobile communication terminal 200b is located in the area T4 shown in FIG. 10, both terminals are 500 m to 1 km. It is considered that the proximity condition is not satisfied in this case.
Based on the concept described above, the management server 110 identifies the positional relationship between the plurality of mobile communication terminals 200. For this purpose, the management server 110 receives position specifying information including the base station ID, the sector ID, and the radio wave reception intensity at the mobile communication terminal 200 from the mobile communication terminal 200 via the base station 130. The management server 110 calculates the terminal position of each mobile communication terminal 200 using this position specifying information, and specifies the positional relationship among the plurality of mobile communication terminals 200.

FIG. 11 is a functional block diagram illustrating a functional configuration of the control unit 111 of the management server 110. The control unit 11 implements functions corresponding to the communication request acquisition unit 1111, the terminal specification unit 1112, the positional relationship specification unit 1113, the permission unit 1114, and the location specification information acquisition unit 1115 by executing the program. To do. The functions realized by the communication request acquisition unit 1111 and the terminal identification unit 1112 are the same as those in the first embodiment described above.
The position specifying information acquisition unit 1115 acquires the position specifying information from the mobile communication terminal 200 via the communication unit 112. For example, the mobile communication terminal 200 measures the reception intensity of radio waves received from the base station 130. Then, the mobile communication terminal 200 transmits the measured reception strength and the position specifying information including the base station ID and the sector ID acquired in advance from the base station 130 to the mobile communication network 100 via the base station 130. The radio wave is, for example, a radio wave related to a pilot signal that the base station 130 periodically transmits. The positional relationship specifying unit 1113 refers to the position specifying information acquired by the position specifying information acquiring unit 1115 and refers to the mobile communication terminal 200. The terminal position of each mobile communication terminal 200 is calculated based on the base station ID and the sector ID indicating the sector antenna with which the mobile communication terminal 200 communicates and the reception intensity acquired by the position specifying information acquisition unit 1115.
The permission unit 1114 uses the positional relationship specified by the positional relationship specifying unit 1113 as a proximity condition that the distance between the first mobile communication terminal 200 and the second mobile communication terminal 200b is less than a threshold. If the proximity condition is satisfied, communication with a discounted communication charge is permitted.

FIG. 12 is a sequence chart showing an operation procedure in the communication system 1. Hereinafter, an operation when the first mobile communication terminal 200a transmits a communication request message will be described. Since the processing steps of steps SA1 to SA4 are the same as those in the first embodiment described above, description thereof is omitted.
When the control unit 111 of the management server 110 specifies mobile communication terminals 200 with the same subscriber in the process of step SA4, the communication unit 112 sends a transmission request signal for requesting transmission of position specifying information to each mobile communication terminal. 200 (step SB5). Here, the control unit 111 transmits a transmission request signal to each of the first mobile communication terminal 200a and the second mobile communication terminal 200b. The first mobile communication terminal 200a and the second mobile communication terminal 200b that have received the transmission request signal measure the intensity of the received radio wave from the base station 130, and specify the base station ID and sector ID acquired in advance. The position specifying information is generated. And the 1st mobile communication terminal 200a and the 2nd mobile communication terminal 200b transmit position specific information to base station 130 (Step SB6). The control unit 111 of the management server 110 receives the position specifying information transmitted by the first mobile communication terminal 200 a and the second mobile communication terminal 200 b by the communication unit 112 via the base station 130.

  Next, the control unit 111 calculates the terminal position of each mobile communication terminal 200 based on the position specifying information (step SB7). Here, as described above, the control unit 111 may calculate an area (for example, the areas T1 and T2 in FIG. 10) that can be narrowed down by the position specifying information as the terminal position. Then, the control unit 111 determines whether or not the proximity condition is satisfied based on the calculated terminal position (step SB8). Here, the control unit 111 calculates the distance between the centers of gravity of the regions that can be narrowed down by the position specifying information as the distance between the terminals, and determines that the proximity condition is satisfied when the distance between the terminals is less than the threshold ( Step SB8; YES). And the control part 111 permits the communication which applied the discount service (step SB9). The process of step SB9 may be the same as step SA9 of the first embodiment described above. On the other hand, when determining that the proximity condition is not satisfied (step SB8; NO), the control unit 111 does not permit communication according to the communication request message. The control performed when the control unit 111 does not permit communication may be the same as that in the first embodiment described above.

  According to the communication system 1 of the second embodiment described above, the positional relationship between the mobile communication terminals 200 can be specified in more detail than the configuration of the first embodiment described above. Even if they are different, the management server 110 can grasp the degree of proximity between them. Accordingly, the accuracy of providing the discount service by the telecommunications carrier is further increased in line with the purpose of permitting communication using the discount service only when the mobile communication terminal 200 is used by the subscriber himself / herself. be able to. In addition, since the management server 110 calculates the terminal position based on the position specifying information, it is possible to suppress an increase in installation / operation costs due to the introduction of the communication system 1 and the system configuration is not complicated.

[Modification]
The present invention can be implemented in a form different from the above-described embodiment. The present invention can also be implemented in the following forms, for example. Further, the following modifications may be combined as appropriate.
[Modification 1]
In each of the above-described embodiments, when the management server 110 does not permit communication to which the discount service is applied, the communication channel corresponding to the communication request message is not established. Control for not permitting communication to which the discount service provided by the management server 110 is applied may be other than this.
For example, although the management server 110 does not apply the discount service, the communication channel corresponding to the communication request message may be established without discounting the communication fee. In this case, for example, if the management server 110 determines that the proximity condition is not satisfied for the same mobile communication terminal 200 by the number of times equal to or greater than the threshold, the management server 110 permits communication as a normal communication fee without applying the discount service. If the example of FIG. 4 is used, the communication fee of “¥ 4000” is also imposed on the first mobile communication terminal 200a with the subscriber ID “USER01”. In this case, the permission unit 1114 of the control unit 111 may transmit an instruction signal for instructing the charging server device 150 to rewrite the communication fee through the communication network interface 113. This instruction signal includes, for example, an instruction indicating that the discount service is not applied and a terminal ID indicating which mobile communication terminal 200 the instruction is related to. When receiving the instruction signal, charging server apparatus 150 rewrites the communication fee associated with the terminal ID specified by the instruction signal and updates charging data 151.

Further, in the communication system 1, not only a fixed fee discount, but also a communication fee discount for a pay-per-use portion is performed for a subscriber ID “USER04” indicating a subscriber who has subscribed to a pay-as-you-go contract plan, for example. It may be broken.
In addition, a service provider may offer a service for discounting the communication fee of the main terminal instead of the sub terminal, and all subscribing contracts by one subscriber without distinguishing between the sub terminal and the main terminal. A discount service may be provided to the mobile communication terminal 200. Further, when one subscriber subscribes to three or more mobile communication terminals 200, the management server 110 is the main terminal only for one sub-terminal that has transmitted the communication request message, as in the first and second embodiments. The positional relationship between the mobile communication terminal 200 (main or sub terminal) that has transmitted the communication request message and all other mobile communication terminals 200 with the same subscriber is the same. The communication fee discount service may be permitted only when all the positional relationships satisfy the proximity condition.
In short, the management server of the present invention, when the proximity condition is satisfied, the communication fee of at least some of the plurality of mobile communication terminals subscribed by one subscriber is not satisfied with the proximity condition. Control for discounting may be performed. Therefore, the management server 110 may add an extra charge to the communication charge when the proximity condition is not satisfied.

[Modification 2]
The management server 110 may specify the positional relationship between the first mobile communication terminal 200a and the second mobile communication terminal 200b other than the methods of the first and second embodiments described above. For example, each mobile communication terminal 200 includes a communication unit that performs communication without passing through the mobile communication network 100, such as an infrared communication method, a communication method using a contact or non-contact IC chip, and a short-range wireless communication method. Shall be provided. Then, before starting transmission of the communication request message, the mobile communication terminals 200 of the same subscriber may communicate with each other using this communication means, and if this communication is successful, the proximity condition may be considered. In this case, when the mobile communication terminal 200 that transmits the communication request message determines that the proximity condition is satisfied by communication with the mobile communication terminal 200 of the same subscriber, the mobile communication terminal 200 notifies the management server 110 to that effect. The management server 110 permits communication using the discount service only when this notification is received.

Further, when the position registration area is small, the proximity condition may be that the position registration area is the same. Further, using the positioning result by GPS (Global Positioning System), the management server 110 may satisfy the proximity condition when the distance between terminals of the same subscriber is equal to or less than a threshold value.
Moreover, you may combine the structure which concerns on specification of the positional relationship of 1st and 2nd embodiment mentioned above. In this case, the management server 110 permits communication using the discount service when a plurality of mobile communication terminals 200 of the same subscriber are located in the same cell and the distance between the terminals is less than the threshold.
Further, in each of the above-described embodiments, a macro cell is assumed. For example, when the range of a wireless area is narrow like a femto cell (in the case of a femto cell, a range of about a few m to several tens of m), A method using the distance between terminals as in the second embodiment is more preferable. Therefore, the method using the inter-terminal distance as in the second embodiment may be adopted only in places where the range of the wireless area is equal to or less than the threshold. Further, the base station may not be sectorized.
Also, the management server 110 does not calculate the terminal position every time the positional relationship is specified, but the correspondence relationship between the base station where the mobile communication terminal 200 is located and the reception intensity of the radio wave when the proximity condition is satisfied May be stored in advance, and it may be determined whether or not the proximity condition is satisfied by comparing the database with the position specifying information.

  Further, in the second embodiment described above, the management server 110 calculates the terminal position using the reception intensity of the radio wave from one base station for each mobile communication terminal 200, but from two or more base stations 130, The terminal position of one mobile communication terminal 200 may be calculated using the received intensity of the radio wave. In this way, the accuracy of the terminal position calculated by the management server 110 is improved.

[Modification 3]
In each of the above-described embodiments, the management server 110 determines whether or not the proximity condition is satisfied when the management server 110 receives the communication request message. On the other hand, there may be a case where the positional relationship between the mobile communication terminals 200 changes after the communication is started and the proximity condition is not satisfied midway. Therefore, the positional relationship specifying unit 1113 specifies the positional relationship with other mobile communication terminals 200 having the same subscriber at every predetermined period (for example, every minute) during the period in which the mobile communication terminal 200 communicates. You may make it do. In this case, when the latest positional relationship is specified by the positional relationship specifying unit 1113, the permission unit 1114 performs control according to the specification result. That is, when the proximity condition is not satisfied during communication, it is possible to disconnect the communication channel or cancel the discount service.
The management server 110 determines whether or not the communication using the discount service is permitted when the communication request message is received from the mobile communication terminal 200. Therefore, the management server 110 applies the discount service every time the mobile communication terminal 200 spontaneously transmits a communication request message to the mobile communication network 100, not only when the user performs an operation to instruct the start of communication. It may be determined whether communication is permitted.

[Modification 4]
It is conceivable that one mobile communication terminal 200 that is a sub terminal attempts communication connection many times in a short time. Therefore, when the management server 110 permits communication according to the communication request message, the management server 110 holds the positional relationship specified by the acquisition of the communication request message for a predetermined period. Then, when the management server 110 acquires a communication request message from the same terminal within the holding period, the management server 110 may permit communication without specifying the positional relationship with the main terminal. That is, in the configuration of the first embodiment described above, the management server 110 omits the processing of steps SA2 to SA8, and in the configuration of the second embodiment described above, the management server 110 omits the processing of steps SA2 to SB8.
The positional relationship among a plurality of terminals hardly changes within a short period. Therefore, according to the configuration of this modified example, the management server 110 is necessary for communication connection in the communication system 1 while applying the communication fee discount service when the mobile communication terminal 200 is used by the subscriber. Processing can be reduced.

[Modification 5]
When the second mobile communication terminal 200b does not transmit a response signal according to the process of step SA5 of the first embodiment described above, or the second mobile communication terminal according to the process of step SB5 of the second embodiment described above. When there is no response from 200b, the management server 110 may permit communication according to the communication request message. When there is no response signal from the second mobile communication terminal 200b, for example, the second mobile communication terminal 200b may be powered off, and the second mobile communication terminal 200b may not be used at that time. This is because it is considered that the possibility of unauthorized use of the second mobile communication terminal 200b is low. Therefore, the management server 110 may allow communication according to the communication request message transmitted from the first mobile communication terminal 200a in consideration of user convenience.

In this case, if there is no response from the second mobile communication terminal 200b, the positional relationship specifying unit 1113 considers that the power is off, and allows communication with a discounted communication fee regardless of whether or not the proximity condition is satisfied. To do. In order to confirm that the second mobile communication terminal 200b is powered off, the communication system 1 may be configured as follows. When the power of the second mobile communication terminal 200b is turned on or off, the second mobile communication terminal 200b transmits a signal indicating that to the management server 110. Then, the management server 110 records the power on / off status of each mobile communication terminal 200 in a database based on whether or not this signal is received, and the second mobile communication terminal 200b is turned on by referring to this database. Alternatively, it may be determined whether it is off.
It is also possible for the management server 110 not to apply the communication fee discount service even when the second mobile communication terminal 200b is powered off.

[Modification 6]
In each embodiment mentioned above, although the case where the mobile communication terminal of this invention was a smart phone or a mobile telephone terminal was demonstrated, this invention can also be applied to another mobile communication terminal. For example, the present invention can be applied to various mobile communication terminals such as a mobile computer, a PDA (Personal Digital Assistance), and a portable game machine.
Further, the management server 110, the subscriber information DB 140, and the billing server device 150 are not limited to being realized by separate devices, and the functions of these devices may be realized by a single server device.
Each function realized by the control unit 111 of the management server 110 described above can be realized by a combination of a plurality of programs, or can be realized by cooperation of a plurality of hardware resources.

DESCRIPTION OF SYMBOLS 1 ... Communication system, 100 ... Mobile communication network, 110 ... Management server, 111 ... Control part, 1111 ... Communication request acquisition part, 1112 ... Terminal specification part, 1113 ... Positional relationship specification part, 1114 ... Authorization part, 1115 ... Position specification Information acquisition unit, 112 ... communication unit, 113 ... interface for communication network, 120 ... exchange network, 121 ... exchange, 130, 130a, 130b, 130c ... base station, 140 ... subscriber information DB, 150 ... billing server device, 151 ... billing data, 200 ... mobile communication terminal, 200a ... first mobile communication terminal, 200b ... second mobile communication terminal, 201 ... control unit, 202 ... voice input / output unit, 203 ... wireless communication unit, 204 ... UI unit, 205: Storage unit

Claims (8)

A communication request acquisition unit for acquiring a communication request transmitted by the first mobile communication terminal;
When the communication request acquisition unit acquires the communication request, a terminal specifying unit that specifies a second mobile communication terminal having the same subscriber as the first mobile communication terminal;
A positional relationship identifying unit that identifies the positional relationship between the first and second mobile communication terminals identified as those of the same subscriber by the terminal identifying unit;
When the positional relationship specified by the positional relationship specifying unit satisfies a predetermined proximity condition indicating that the first and second mobile communication terminals are close to each other, the subscriber is more than when the proximity condition is not satisfied. And a permission unit that permits communication with discounted communication charges imposed on the server. A location specifying information acquisition unit for acquiring the intensity of a received radio wave from the base station in the first and second mobile communication terminals communicating with the base station and a base station ID for identifying the base station;
The positional relationship specifying unit specifies the positional relationship between the first and second mobile communication terminals determined by the base station ID acquired by the location specifying information acquisition unit and the intensity of the received radio wave,
The permission unit uses a positional relationship indicating that the distance between the first and second mobile communication terminals is less than a threshold as the proximity condition, and the positional relationship specified by the positional relationship specifying unit satisfies the proximity condition In this case, the management server according to claim 1, wherein communication with a discounted communication charge is permitted. The base station is a set of a plurality of sectors corresponding to each direction of transmitting the received radio waves,
The position specifying information acquisition unit acquires a sector ID for identifying the sector corresponding to the antenna that transmitted the received radio wave, in addition to the intensity of the received radio wave and the base station ID,
The positional relationship specifying unit calculates the positions of the first and second mobile communication terminals in the sector based on the base station ID, sector ID, and reception strength acquired by the position specifying information acquisition unit, respectively. The management server according to claim 2, wherein a distance between the first and second mobile communication terminals is calculated and the distance is specified as the positional relationship. The first and second mobile communication terminals communicate with a base station;
The positional relationship specifying unit specifies a base station with which the first and second mobile communication terminals communicate,
The permission unit allows the first and second mobile communication terminals to communicate with the common base station as the proximity condition, and permits communication with a discount on the communication fee when the proximity condition is satisfied. The management server according to claim 1. The management server according to any one of claims 1 to 4, wherein the positional relationship specifying unit specifies the positional relationship for each predetermined period during a period in which the first mobile communication terminal communicates. . The management server according to any one of claims 1 to 5, wherein the permission unit does not permit communication according to the communication request when the positional relationship does not satisfy the proximity condition. A first mobile communication terminal;
A second mobile communication terminal;
A management server and
The management server
A communication request acquisition unit for acquiring a communication request transmitted by the first mobile communication terminal;
When the communication request acquisition unit acquires the communication request, a terminal specifying unit that specifies the first mobile communication terminal and the second mobile communication terminal whose subscriber is the same;
A positional relationship identifying unit that identifies the positional relationship between the first and second mobile communication terminals identified as those of the same subscriber by the terminal identifying unit;
When the positional relationship specified by the positional relationship specifying unit satisfies a predetermined proximity condition indicating that the first and second mobile communication terminals are close to each other, the subscriber is more than when the proximity condition is not satisfied. And a permission unit that permits communication with discounted communication charges imposed on the communication system. On the computer,
A communication request acquisition step of acquiring a communication request transmitted by the first mobile communication terminal;
When the communication request is acquired in the communication request acquisition step, a terminal specifying step for specifying a second mobile communication terminal having the same subscriber as the first mobile communication terminal;
A positional relationship specifying step for specifying a positional relationship between the first and second mobile communication terminals specified as those of the same subscriber in the terminal specifying step;
When the positional relationship specified in the positional relationship specifying step satisfies a predetermined proximity condition indicating that the first and second mobile communication terminals are close to each other, the subscriber is more than when the proximity condition is not satisfied. A program for executing a step of permitting communication with discounted communication charges imposed on the.

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