JP5128413B2 - Exchange and communication regulation control method using the same - Google Patents

Description

  The present invention relates to an exchange and a communication restriction control method using the same.

In recent years, a flat-rate billing service has been adopted in packet communication of mobile communication terminals in accordance with an increase in data transmission / reception capacity. Users who use this flat-rate billing service can send and receive data at a fixed charge, and therefore tend to send and receive large amounts of data compared to users of pay-per-use billing services. For this reason, service providers use packet communications for flat-rate billing service users for the purpose of effective use of radio resources so as not to affect service quality such as the line speed of users of pay-per-use billing services. The amount is regulated according to the amount (see, for example, Patent Document 1). For example, when the amount of accumulated packets exceeds a predetermined threshold during communication, the packet communication is restricted when the session with the communication destination is disconnected in the packet switch and the connection is reestablished until the predetermined time elapses. It is a refusal. The restriction information regarding such restriction is taken over between the packet switches in accordance with the movement of the location registration area of the mobile communication terminal.
JP 2007-36805 A

  By the way, in the packet communication regulation described above, since the contents of the regulation (for example, the threshold of the accumulated packet amount) are different for each user's contract plan (contract information), the regulation is changed when the contract plan is changed. Even if the user is implemented, the restriction information applied at that time is reset. Here, when the information indicating the change of the contract plan is input to the mobile communication system and the change of the location registration area of the mobile communication terminal is performed at almost the same timing, the location registration is performed. In addition, the restriction information is transmitted from the packet switch before the mobile communication terminal moves in the location registration area to the packet switch in the destination location registration area. In this case, the packet switch in the location registration area of the destination of the mobile communication terminal receives the contract plan after the update processing related to the contract plan is received from a device such as an HLR (Home Location Register). Unable to detect that the plan has changed. Therefore, in the packet switch, the regulation information that should be reset is not reset, and erroneous control occurs such that regulation is continued. As a result, there may be a problem that an optimal service cannot be provided to a user who has changed the location registration area at the above timing.

  The present invention has been made to solve the above problems, and an object thereof is to provide an exchange capable of preventing erroneous control of regulation in packet communication, and a communication regulation control method using the same. To do.

  In order to achieve the above object, an exchange according to the present invention is included in a mobile communication network, receives a location registration request from a mobile communication terminal, forwards it to a terminal management device that performs location registration, and An exchange that communicates with mobile communication terminals in the service area, and when a location registration request is received from the mobile communication terminal, the mobile communication terminal moves to the service area under its control Stores information acquisition means for acquiring restriction information and contract information for restricting communication of mobile communication terminals in its own equipment from the exchange that was previously located, and the restriction information and contract information acquired by the information acquisition means Information storage means, a contract information acquisition means for acquiring contract information from a terminal management device for managing contract information of the mobile communication terminal upon receipt of a location registration request from the mobile communication terminal, and a contract information acquisition means. The contract information stored in the information storage means and a change determination means for determining whether or not there is a change in the contract information, and the change determination means determines that the contract information is changed. And a reset means for updating the contract information stored in the information storage means to the contract information acquired by the contract information acquisition means and resetting the regulation information stored in the information storage means. It is characterized by that.

  With this configuration, when a location registration request is received from a mobile communication terminal, the restriction information and contract information are acquired and stored from the exchange that was in the area before the mobile communication terminal moved to the area under its control. . Then, the contract information is acquired from the terminal management device, and it is determined whether there is a change by comparing the contract information stored in the information storage unit with the contract information acquired from the terminal management device. In this case, the contract information is updated and the regulation information is reset (cleared). As a result, even if the input of information indicating the change of contract information to the mobile communication system and the change of the location registration area of the mobile communication terminal are performed at almost the same timing, the change of the contract information is performed in the exchange. Therefore, it is possible to reliably reset the regulation information. Therefore, erroneous control of regulation in packet communication can be prevented.

  In addition to being described as an invention of an exchange as described above, the present invention can also be described as an invention of a communication restriction control method as follows. This is substantially the same invention only in different categories, and has the same operations and effects.

  That is, the communication restriction control method according to the present invention is included in a mobile communication network, receives a location registration request from a mobile communication terminal, transfers it to a terminal management device that performs location registration, and exists in a subordinate area. A communication restriction control method using an exchange that communicates with a mobile communication terminal in the service area. When a location registration request is received from the mobile communication terminal, the mobile communication terminal moves to the area under its control. Information acquisition step for acquiring restriction information and contract information for restricting communication of the mobile communication terminal in its own machine from the exchange that was in the area before the operation, and the restriction information and contract information acquired in the information acquisition step An information storage step for storing, a contract information acquisition step for acquiring contract information from a terminal management device for managing contract information of the mobile communication terminal when receiving a location registration request from the mobile communication terminal; The contract information acquired in the contract information acquisition step is compared with the contract information stored in the information storage means to determine whether there is a change in the contract information, and the contract information in the change determination step. When it is determined that there is a change, the contract information stored in the information storage step is updated to the contract information acquired in the contract information acquisition step, and the restriction information stored in the information storage step is reset. And a reset step.

  According to the present invention, since the change of contract information can be detected in the exchange, the timing at which information indicating the change of contract information is input to the mobile communication system and the change of the location registration area of the mobile communication terminal are Even when it is performed at almost the same timing, the restriction information can be surely reset. Thereby, erroneous control of regulation in packet communication can be prevented.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an exchange according to the present invention and a communication restriction control method using the same will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 shows a configuration of a mobile communication system including an exchange according to an embodiment of the present invention. As shown in the figure, the mobile communication system 1 includes a mobile communication terminal 2, a base station 3, packet exchanges 4 a and 4 b (4), and a terminal management device 5. Although only one mobile communication terminal 2 is shown in FIG. 1, the mobile communication system 1 usually includes an infinite number of mobile communication terminals 2.

  The location registration area (located area) L1 is an area encompassed by the packet switch 4a, and the location registration area L1 includes a plurality of base stations in addition to the base station 3. Similarly, the location registration area L2 is an area encompassed by the packet switch 4b, and the location registration area L2 includes a plurality of base stations in addition to the base station 3. Further, the base station 3, the packet switch 4, and the terminal management device 5 constitute a mobile communication network that is a connection target of the mobile communication terminal 2. The mobile communication network is further provided with a radio control device (RNC: Radio Network Controller), an authentication device (VLR: Visitor Location Register), etc., not shown. In the following embodiments, the mobile communication terminal 2 crosses the location registration area from the location registration area L1 to the location registration area L2 when the cell moves.

  The mobile communication terminal 2 is, for example, a mobile phone, performs wireless communication with a base station 3 that covers a wireless area in which the mobile device is located, connects to a mobile communication network, and moves in response to a user operation. A communication terminal that receives a call service or a packet communication service in a communication network.

  The packet switches 4 a and 4 b are devices managed by a service provider that provides communication services, and are nodes that communicate with the mobile communication terminal 2 via the base station 3. The packet switches 4a and 4b control the packet communication restriction of the mobile communication terminal 2 based on restriction information for restricting packet communication. The packet exchanges 4a and 4b correspond to SGSN (Serving GPRS Support Node).

  Here, restrictions on packet communication of the mobile communication terminal 2 in the packet exchanges 4a and 4b will be described. The packet communication regulation is suitable for users of the metered charge service when the service provider provides two types of billing methods for the communication charge in the packet communication of the mobile communication terminal 2: the metered charge service and the fixed charge service. This is done to maintain the communication environment. The contents of the restriction are, for example, rejection of packet communication connection of the user of the flat-rate billing service, and this is performed according to, for example, the cumulative packet amount of the user of the mobile communication terminal 2 for one month. Specifically, for example, in a flat-rate billing service to which a user is subscribed, when the cumulative packet amount threshold is set to 10,000 packets, for example, if the user's cumulative packet amount exceeds the threshold, While the session is disconnected, the service provider rejects the connection for a certain time (0 to 999 minutes).

  The terminal management device 5 is a device managed by a service provider that provides a communication service, and is a node that performs location registration of the mobile communication terminal 2, management of contract information, and the like. When the change information related to the contract information of the mobile communication terminal 2 is input from the service provider, the terminal management device 5 performs a predetermined process such as updating or setting the stored contract information. The terminal management apparatus 5 corresponds to an HLR (Home Location Register). The contract information is a contract plan indicating a billing mode for calls and communications of the mobile communication terminal 2.

  FIG. 2 is a diagram illustrating a hardware configuration of the packet switches 4a and 4b. As shown in FIG. 2, the packet switch 4 includes a computer including hardware such as a CPU 41, a RAM 42 and a ROM 43 as main storage devices, a communication module 44 as a data transmission / reception device such as a network card, and an auxiliary storage device 45 such as a hard disk. Configured as When these components operate, functions described later of the packet switches 4a and 4b are exhibited. Note that the terminal management device 5 also has a similar hardware configuration.

  Subsequently, functions of the mobile communication terminal 2, the packet exchanges 4a and 4b, and the terminal management device 5 will be described.

  FIG. 3 is a block diagram showing the configuration of the mobile communication terminal 2. As shown in FIG. 3, the mobile communication terminal 2 includes a location registration request unit 201 and a location registration response reception unit 202. Note that the mobile communication terminal 2 further includes a call function for performing a call, a communication function for performing communication, and the like.

  When the location registration request unit 201 detects that the mobile device has performed a cell transition accompanied by a change in the location registration area based on the broadcast information received from the base station 3 closest to the current location, the location registration request unit 201 The packet exchanges 4a and 4b use location registration request information (RA Update Request, signal names shown in parentheses conform to GPRS (General Packet Radio Service). The same applies hereinafter) requesting location registration for the current location. Send to. The location registration request information includes identification information such as a telephone number that can identify the mobile communication terminal 2. Further, the location registration request information includes information for specifying the packet switch in the location registration area that was present before the mobile communication terminal 2 moved to the location registration area where the mobile communication terminal 2 is currently located.

  In response to the transmission of the location registration request information from the location registration request unit 201, the location registration response reception unit 202 receives a location registration response (RA Update Accept) for the location registration request information transmitted from the packet switches 4a and 4b. To do. The location registration ends normally when the mobile communication terminal 2 receives the location registration response.

  FIG. 4 is a block diagram showing the configuration of the packet switches 4a and 4b. As shown in FIG. 4, the packet exchanges 4a and 4b include a location registration request reception unit 401, a location registration request transfer unit 402, a location registration response transmission unit 403, a user information request unit 404, and a user information acquisition unit 405. A user information storage unit 406, a contract information acquisition unit 407, a change determination unit 408, a reset unit 409, a restriction control unit 410, a user information request reception unit 411, and a user information transmission unit 412. Yes.

  The location registration request receiving unit 401 receives location registration request information from the mobile communication terminal 2. The location registration request reception unit 401 outputs the received location registration request information to the location registration request transfer unit 402 and the user information request unit 404.

  When the location registration request transfer unit 402 receives the location registration request information from the location registration request reception unit 401, the location registration request transfer unit 402 transfers location registration request information (Combined Update Location Request) to the terminal management device 5. The location registration request transfer unit 402 notifies the location registration response transmission unit 403 and the contract information acquisition unit 407 that the location registration request information has been transferred to the terminal sensing device 5.

  The location registration response transmission unit 403 receives the location registration information (Insert Subscriber Date Request) transmitted from the terminal management device 5 in response to the location registration request transfer unit 402 transferring the location registration request information to the terminal management device 5. It receives, generates a location registration response based on the location registration information, and transmits it to the mobile communication terminal 2.

  When the user information requesting unit 404 receives the location registration request information from the location registration request receiving unit 401, the user information requesting unit 404 receives the location registration request information from the location registration request receiving unit 401. In 4a, user information request information (SGSN Context Request) for requesting user information of the mobile communication terminal 2 is transmitted. The user information request unit 404 specifies the packet switch 4a that transmits the user information request information based on the location registration request information. The user information is information including restriction information and contract information of the mobile communication terminal 2. The user information request information includes identification information of the mobile communication terminal 2 related to the requested user information.

  The user information acquisition unit 405 responds that the user information request unit 404 has transmitted the user information request information, and the location registration area L1 that was in the mobile communication terminal 2 before moving to the current location registration area L2. Information acquisition means for receiving and acquiring user information (SGSN Context Response) transmitted from the packet switch 4a. The user information acquisition unit 405 outputs the acquired user information to the user information storage unit 406.

  The user information storage unit 406 is an information storage unit that stores user information acquired by the user information acquisition unit 405. Upon receiving the user information from the user information acquisition unit 405, the user information storage unit 406 stores the identification information of the mobile communication terminal 2, the regulation information, and the contract information in association with each other as a subscriber profile. FIG. 5 is a diagram illustrating an example in which user information is stored. As shown in FIG. 5, in the user information table, “telephone number” which is identification information for identifying the mobile communication terminal 2, “contract information” indicating the form of the contract plan with which the user has contracted, and packet communication “Regulation information” indicating whether or not there is regulation is stored in association with each other. In the restriction information, “1” indicates that packet communication is restricted, and “0” indicates that it is not restricted.

  Here, the regulation information will be described. The restriction information includes information indicating whether or not there is a restriction, information indicating a time during which a connection is rejected when there is a restriction, and information indicating an elapsed time since the restriction was started when the restriction is being performed. , Information indicating the accumulated packet amount of the mobile communication terminal 2 is included. The restriction information is set based on whether or not restriction (0, 1) is present, for example, whether or not the cumulative packet amount for one month of the mobile communication terminal 2 exceeds a predetermined threshold set for each contract plan. When the predetermined threshold is exceeded, “0” is set to “1”. The presence or absence of this regulation is reset (“1” to “0”, “0” to “0”) when a predetermined time for performing connection refusal has elapsed and when a change in contract information is notified. Changed). In addition, since the accumulated packet amount is usually reset every month, the presence / absence of restriction is also reset accordingly.

  The contract information acquisition unit 407 is contract information acquisition means for acquiring contract information from the terminal management device 5 that manages contract information of the mobile communication terminal 2. The contract information acquisition unit 407 receives the contract information (Insert) of the mobile communication terminal 2 transmitted from the terminal management device 5 in response to the transfer of the location registration request information from the location registration request transfer unit 402 to the terminal management device 5. Receive and obtain Subscriber DateRequest). The contract information acquisition unit 407 outputs the acquired contract information to the change determination unit 408.

  The change determination unit 408 compares the contract information acquired by the contract information acquisition unit 407 with the contract information stored in the user information storage unit 406, and determines whether there is a change in the contract information. Means. When receiving the contract information from the contract information acquisition unit 407, the change determination unit 408 compares the contract information with the contract information of the mobile communication terminal 2 stored in the user information storage unit 406. When the change determination unit 408 determines that there is a change between the contract information acquired by the contract information acquisition unit 407 and the contract information stored in the user information storage unit 406, the change determination unit 408 resets the reset information to the reset unit 409. Output information. The change of contract information is, for example, a change from “contract plan A” to “contract plan B”.

  When the change determination unit 408 determines that there is a change in the contract information, the reset unit 409 updates the contract information stored in the user information storage unit 406 to the contract information acquired by the contract information acquisition unit 407. At the same time, it is reset means for resetting the restriction information stored in the user information storage unit 406. When receiving the reset information from the change determination unit 408, the reset unit 409 updates the contract information stored in the user information storage unit 406 to the contract information acquired by the contract information acquisition unit 407. Further, when the contract information is updated, the reset unit 409 resets the restriction information of the mobile communication terminal 2 associated with the contract information. In FIG. 5, when the restriction information is “1” in FIG. 5, it is set to “0”. That is, the restriction on packet communication of the mobile communication terminal 2 is released.

  The restriction control unit 410 controls the restriction of packet communication in the mobile communication terminal 2 based on the restriction information. Specifically, the restriction control unit 410 refers to the restriction information stored in the user information storage unit 406, and connects the packet communication connection of the mobile communication terminal 2 whose restriction information is “1” by the service provider in advance. Reject for the set time. It should be noted that the time for refusing the packet communication connection may be arbitrarily adjusted for each user by the service provider without being set in advance.

  The user information request receiving unit 411 receives user information request information from a packet switch other than its own device. The user information request reception unit 411 outputs the received user information request information to the user information transmission unit 412.

  When the user information transmission unit 412 receives the user information request information from the user information request unit reception unit 411, the user information transmission unit 412 extracts the user information corresponding to the user information request information with reference to the user information storage unit 406, and receives the user information request. Send to the packet switch that sent the information. Note that the user information transmission unit 412 may transmit the restriction information and the contract information as user information at the same time, or may separately transmit the restriction information and the contract information as user information.

  FIG. 6 is a block configuration diagram showing the configuration of the terminal management device 5. As illustrated in FIG. 6, the terminal management device 5 includes a change information acquisition unit 501, a contract information storage unit 502, a location registration request reception unit 503, a location registration unit 504, and a contract information transmission unit 505. Yes.

  The change information acquisition unit 501 acquires the contract information from the change information when the service provider inputs change information regarding the change of the contract information of the mobile communication terminal 2 from the service order system to the mobile communication system 1. The change information is input when the user of the mobile communication terminal 2 performs a procedure for contract information at a terminal that performs communication via a service provider window or a mobile communication network. The change information acquisition unit 501 outputs the acquired contract information to the contract information storage unit 502. The change information includes identification information for identifying the mobile communication terminal 2.

  Upon receiving the contract information from the change information acquisition unit 501, the contract information storage unit 502 stores the contract information in association with the identification information of the mobile communication terminal 2.

  The location registration request receiving unit 503 receives location registration request information of the mobile communication terminal 2 from the packet switches 4a and 4b. The location registration information receiving unit 503 outputs the received location registration request information to the location registration unit 504.

  When the location registration unit 504 receives location registration request information from the location registration request receiving unit 503, the location registration unit 504 stores information related to location registration in a location management database (not shown). In the position management database, identification information of the mobile communication terminal 2 and information indicating a position registration area where the mobile communication terminal 2 is located are stored in association with each other. The location registration process itself by the location registration unit 504 is the same as the conventional location registration process. The location registration unit 504 outputs location registration information indicating that the location registration process has been completed to the contract information transmission unit 505.

  Upon receiving the location registration information from the location registration unit 504, the contract information transmission unit 505 extracts the contract information corresponding to the mobile communication terminal 2 on which the location registration processing has been performed with reference to the contract information storage unit 502, and performs location registration. The request information is transmitted to the packet exchanges 4a and 4b. The contract information transmission unit 505 also transmits the location registration information to the packet switches 4a and 4b. Note that the contract information transmission unit 505, when the update information regarding the change of the contract information of the mobile communication terminal 2 is acquired by the change information acquisition unit 501, is sent to the packet switch in the location registration area where the mobile communication terminal 2 is located. Send contract information.

  Subsequently, processing (communication restriction control method) executed in the mobile communication system 1 according to the present embodiment will be described with reference to FIG. FIG. 7 is a sequence diagram showing processing of the mobile communication system 1. The process shown in FIG. 7 is performed when the cell transition in the mobile communication terminal 2 crosses the location registration area (moving in the area), and from the location registration area L1 under the packet switch 4a to the packet switch 4b. It is assumed that the user has moved to the position registration area L2 subordinate to In the process shown in FIG. 7, it is assumed that change information related to contract information is input from the service provider to the mobile communication system 1 simultaneously with the change of the location registration area. In the mobile communication terminal 2, the restriction information is set to 1, that is, packet communication is restricted.

  As shown in FIG. 7, first, the location registration request information is transmitted from the mobile communication terminal 2 to the packet switch 4b according to the location registration area change (L1 to L2) (S01). At this time, the change information related to the contract information of the mobile communication terminal 2 from the service provider is sent to the mobile communication system 1 (terminal management device 5) almost simultaneously with the timing when the location registration request information is transmitted from the mobile communication terminal 2. It is input (S02). The location registration request information transmitted from the mobile communication terminal 2 is received by the location registration request receiving unit 401 of the packet switch 4b via the base station 3. Then, in response to receiving the location registration request information, the user information request unit 404 transmits the user information request information to the packet switch 4a (S03).

  Next, user information request information is received by the user information request receiving unit 411 of the packet switch 4a, and user information is transmitted to the packet switch 4b by the user information transmitting unit 412 accordingly (S04). The user information transmitted from the packet switch 4a is acquired by being received by the user information acquisition unit 405 of the packet switch 4b (information acquisition step) and stored in the user information storage unit 406 (S05, information storage step). .

  When the location registration request information is transmitted from the mobile communication terminal 2, the location registration request transfer unit 402 of the packet switch 4b transfers the location registration request information to the terminal management apparatus 5 (S06). The location registration request information transferred from the packet switch 4b is received by the location registration request receiving unit 503 of the terminal management device 5, and location registration is performed by the location registration unit 504 (S07).

  When the location registration is performed by the location registration unit 504, the contract information and the location registration information are transmitted from the terminal management apparatus 5 to the packet switch 4b by the contract information transmission unit 505 (S08). The contract information transmitted from the terminal management device 5 is received by the contract information acquisition unit 407 of the packet switch 4b (contract information acquisition step) and compared with the contract information stored in the user information storage unit 406 by the change determination unit 408. Thus, it is determined whether or not there is a change in the contract information (S09, change determination step). If there is a change in the contract information, the process proceeds to step S10. On the other hand, if there is no change in the contract information, the process proceeds to step S12.

  In step S10, the contract information stored in the user information storage unit 406 is updated by the reset unit 409 to the contract information acquired by the contract information acquisition unit 407 (reset step). In addition, the restriction information corresponding to the updated contract information is reset by the reset unit 409 (S11, reset step).

  In step S12, the location registration information transmitted from the terminal management device 5 in step S08 is received by the location registration response transmission unit 403 of the packet switch 4b, and a location registration response is generated based on the location registration information, and the mobile communication terminal 2 is transmitted.

  By the way, in the mobile communication system 1, when the configuration of the packet exchanges 4a and 4b described above is not provided, the following problems may occur.

  That is, in the conventional mobile communication system, the change of the location registration area of the mobile communication terminal (corresponding to S01 of FIG. 7) and the input of information indicating the change of contract information to the mobile communication system (FIG. 7, S02). ) Are performed at almost the same timing, while the terminal management apparatus is performing location registration in response to the location registration request transferred from the packet switch in the destination location registration area (FIG. 7, S07). The restriction information is received from the packet switch in the location registration area before the packet switch in the destination location registration area moves (S04 in FIG. 7). At this time, unlike the present embodiment, the conventional mobile communication system does not receive the contract information. At that time, since location registration has not been completed in the terminal management device, if information indicating change of contract information is input at the above timing, terminal management is performed in the packet switch in the location registration area before moving. Information indicating the change of the contract information is transmitted from the apparatus (transmitted between S02 and S07 in FIG. 7). In this case, the packet exchange in the destination location registration area receives the updated contract information together with the location registration completion response in a state in which only the regulation information is held, so the newly entered contract The information cannot be compared with the original contract information. Therefore, it is impossible to detect that the contract information has been changed in the packet switch in the location registration area of the movement destination. As a result, there is a problem that the restriction information that should be reset is not reset and the restriction is continued.

  On the other hand, as described above, according to the present embodiment, when location registration request information is received from the mobile communication terminal 2, the mobile communication terminal 2 is located before moving to the location registration area L2 under the packet switch 4b. The restriction information and the contract information are acquired and stored by requesting the user information from the packet switch 4a. Then, contract information is acquired together with the location registration information of the mobile communication terminal 2 from the terminal management device 5, and the contract information stored in the user information storage unit 406 is compared with the contract information acquired from the terminal management device 5. It is determined whether there is a change. If there is a change, the contract information is updated and the regulation information is reset. As a result, even if the input of information indicating the change of the contract information to the mobile communication system 1 and the change of the location registration area of the mobile communication terminal 2 are performed at almost the same timing, the packet switch 4b Since the change of the contract information can be detected, the regulation information can be surely reset. Therefore, erroneous control of regulation in packet communication can be prevented. As a result, an optimal service can be provided to the user of the mobile communication terminal 2.

  The present invention is not limited to the above embodiment. In the above embodiment, the restriction information and the contract information are simultaneously transmitted as user information from the packet switch 4a to the packet switch 4b in FIG. 7, but the restriction information and the contract information need not be transmitted at the same time. In this case, the contract information only needs to be transmitted from the packet switch 4a to the packet switch 4b before the terminal management device 5 completes the location registration of the mobile communication terminal 2.

  In the above-described embodiment, the packet exchanges 4a and 4b for packet communication and the communication restriction control method have been exemplified. However, the present invention may be applied to an apparatus and method for restricting calls other than packet communication.

It is a figure which shows the structure of the mobile communication system containing the exchange which concerns on one Embodiment of this invention. It is a figure which shows the hardware constitutions of a packet switch. It is a block block diagram which shows the structure of a mobile communication terminal. It is a block block diagram which shows the structure of a packet switch. It is a figure which shows an example in which user information is memorize | stored. It is a block block diagram which shows the structure of a terminal management apparatus. It is a sequence diagram which shows the process of a mobile communication body system.

Explanation of symbols

  2 ... mobile communication terminal, 4a, 4b (4) ... packet switch, 5 ... terminal management device, 405 ... user information acquisition unit (information acquisition unit), 406 ... user information storage unit (information storage unit), 407 ... contract information Acquisition unit (contract information acquisition unit), 408... Change determination unit (change determination unit), 409... Reset unit (reset unit), L1, L2.

Claims (2)

Included in a mobile communication network, receives a location registration request from a mobile communication terminal, transfers it to a terminal management device that performs location registration, and communicates with the mobile communication terminal located in a subordinate area An exchange to perform,
When the mobile communication terminal receives the location registration request from the mobile communication terminal, the mobile communication terminal in the mobile device from the exchange that was in the mobile communication terminal before moving to the service area under its control. Information acquisition means for acquiring restriction information and contract information for restricting communication of
Information storage means for storing the restriction information and the contract information acquired by the information acquisition means;
Contract information acquisition means for acquiring contract information from the terminal management device that manages the contract information of the mobile communication terminal when receiving the location registration request from the mobile communication terminal;
A change determination unit that compares the contract information acquired by the contract information acquisition unit with the contract information stored in the information storage unit and determines whether or not the contract information is changed;
When it is determined that the contract information is changed by the change determination unit, the contract information stored in the information storage unit is updated to the contract information acquired by the contract information acquisition unit, and An exchange comprising: reset means for resetting the restriction information stored in the information storage means. Included in a mobile communication network, receives a location registration request from a mobile communication terminal, transfers it to a terminal management device that performs location registration, and communicates with the mobile communication terminal located in a subordinate area A communication regulation control method by an exchange to perform,
When the mobile communication terminal receives the location registration request from the mobile communication terminal, the mobile communication terminal in the mobile device from the exchange that was in the mobile communication terminal before moving to the service area under its control. An information acquisition step for acquiring regulation information and contract information for regulating the communication of
An information storage step for storing the restriction information and the contract information acquired in the information acquisition step;
When receiving the location registration request from the mobile communication terminal, a contract information acquisition step of acquiring contract information from a terminal management device that manages the contract information of the mobile communication terminal;
A change determination step for comparing the contract information acquired in the contract information acquisition step with the contract information stored in the information storage unit and determining whether or not the contract information is changed;
When it is determined that there is a change in the contract information in the change determination step, the contract information stored in the information storage step is updated to the contract information acquired in the contract information acquisition step, and And a resetting step of resetting the restriction information stored in the information storage step.

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