JP2006005412A - Communication restriction method, terminal utilizing the same, and communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent congestion and production of overflow calls caused by concentration of calls onto a particular area while carrying minimum favor relating to communication with the users by providing many and useful information items to users of a terminal station on the occurrence of a disaster. <P>SOLUTION: On the occurrence of a disaster, a disaster countermeasure headquarters 60 predicts in advance concentration of calls caused on surrounding areas of the disaster and transmits communication restriction information to a broadcast station 50. The broadcast station 50 broadcasts the communication restriction information to terminals 201 to 206. Each of the terminals 201 to 206 receives the communication restriction information broadcast from the broadcast station 50 so as to discriminate whether or not each base station (cell) to which the position of each terminal is registered is a communication restriction object. When a result of the discrimination indicates that the base station is an object of communication restriction, call reception and transmission operations of the terminals are restricted on the basis of the communication restriction information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a communication control technique in a mobile communication system, and more particularly, to a communication control method for preventing call concentration and congestion occurring at the time of a disaster, a terminal device using the same, and a communication system.

  In a mobile communication system, when a base station and a plurality of terminal stations communicate, limited time resources and frequency resources are shared and used by a plurality of terminal stations. For example, in a cellular phone communication system such as PDC (Personal Digital Cellular telecommunication system), the time axis is divided into a plurality of channels by a time division multiplexing TDMA (Time Division Multiple Access) method, and a plurality of terminal stations are divided for each channel. By assigning, simultaneous communication of a plurality of terminal stations is possible. Therefore, there is a limit to the number of terminal stations that can talk simultaneously using a single frequency band. Furthermore, apart from the number of terminal stations that can simultaneously communicate, the number of communication lines that can be simultaneously processed due to problems such as processing speed and bandwidth of the base station. There are limits to the number.

  When a disaster such as a large earthquake occurs on such a communication system, outgoing calls from within the area and incoming calls from outside the area are concentrated on the base stations in the surrounding area where the disaster occurred to confirm safety. , It becomes difficult to connect the phone, so-called overflow calls occur. Once an overflow call occurs and it becomes difficult to connect the telephone, the user re-calls many times, so the line is further congested, eventually becoming a so-called congestion state, and the communication line goes down.

Patent Documents 1 and 2 discuss, for example, the rescue means for avoiding the occurrence of overflow calls and congestion due to call concentration during a disaster or after the call concentration.
JP 2003-274450 A JP 05-183489 A

  However, all of the techniques described in the above-mentioned documents are treatments after calls to specific base stations are concentrated. Furthermore, none of the techniques actively notifies the user of the degree of congestion or restriction of the communication line.

  The present invention has been made in view of these problems, and an object of the present invention is to provide a communication control method capable of avoiding an overflow call due to call concentration in a specific area and a congestion state at the time of a disaster, and the use thereof. A terminal device and a communication system.

One embodiment of the present invention relates to a terminal device. The terminal device includes a communication unit that communicates with a base station device, an area acquisition unit that acquires information about an area where the base station device exists, and a reception unit that receives information about a communication-controlled base station device from a broadcast station And the base station device with respect to the communication unit based on the information on the base station device with communication restriction received by the receiving unit and the information on the area where the base station device acquired by the area acquiring unit exists. And a control unit for instructing restriction of communication.
“Information about the area where the base station device exists” refers to an identification number assigned to each base station device, an identification number assigned to each area including a plurality of base station devices, and the like. This is information determined so that the area where the base station apparatus exists can be specified. Further, the “information regarding base station apparatus for which communication is restricted” refers to information representing the content of the restriction at the base station where communication is restricted.
According to this aspect, since the operation restriction of the terminal device is performed based on the information regarding the communication restriction broadcast from the broadcasting station before the call concentrates in the specific area, it is possible to prevent the overflow call and the congestion state in advance. .

The information related to the area where the base station device is acquired in the area acquisition unit is the identification number of the base station device, and the information related to the communication-controlled base station device received in the reception unit is communication-controlled. When the identification number of the base station device is included, and the control unit corresponds to the identification number of the base station device acquired in the area acquisition unit and the identification number of the base station device subjected to communication received in the reception unit In addition, the communication unit may be instructed to restrict communication with the base station apparatus.
When the identification number of the base station device that is the communication target and the identification number of the base station device that is subject to communication are acquired, and the base station device that is the communication partner falls under the base station device that is subject to communication restriction By restricting the communication operation of the terminal device, it is possible to prevent overflow calls and congestion.

The information related to the communication-regulated base station apparatus to be received by the receiving unit further includes the identification number of the communication apparatus that is not subject to the transmission restriction, and the control unit relates to the communication-regulated base station apparatus. Even in the case where the information indicates a restriction on the transmission operation, the communication unit may be permitted to make a call to an identification number of a communication device that is not subject to call restriction.
By using broadcast waves, it is possible to send a relatively large amount of data to the terminal device without imposing a load on the base station device. For example, identification numbers such as disaster message dial numbers are not subject to transmission restrictions. To allow the user to perform a minimum communication even under the condition of communication restriction.

The information related to the communication-regulated base station apparatus to be received by the receiving unit includes information indicating the degree of communication restriction performed by the base station apparatus, and the control unit responds to the degree of communication restriction performed by the base station apparatus. A plurality of communication restriction operations may be defined in advance, and a communication restriction operation corresponding to the degree of communication restriction performed by the base station apparatus may be selected and instructed to the communication unit.
The communication restriction performed in the base station apparatus is classified into, for example, three levels of high, medium, and low, and the operation of communication restriction corresponding to this degree is defined in advance. The terminal device can perform communication while adjusting the load applied to the communication system by changing the operation of the communication restriction according to the received degree of communication restriction.

When the control unit receives a call from the base station device when the information related to the communication-restricted base station device received by the receiving unit indicates a restriction on the incoming call operation, the control unit notifies the user of the terminal device via a predetermined interface. And instructing the communication unit to interrupt the incoming call processing after the call.
As a result, the load on the base station apparatus and the bandwidth occupation time can be minimized, and at the same time, the user can be notified that there is an incoming call.

Another aspect of the present invention relates to a communication restriction method. In this communication restriction method, a broadcast station broadcasts information related to a communication-restricted base station apparatus, a terminal apparatus receives information related to the communication-restricted base station apparatus, and receives the received information related to a communication-restricted base station apparatus. The communication with the base station apparatus is restricted according to the contents of.
According to this aspect, before the call concentrates in a specific area, the communication restriction between the terminal device and the base station device is performed based on the information related to the communication restriction broadcast from the broadcasting station. It can be prevented in advance.

Yet another aspect of the present invention relates to a communication system. The communication system includes a terminal device, a base station device that communicates with the terminal device, and a broadcast station that broadcasts information related to the base station device that is restricted for the terminal device. According to this system, the terminal device receives information related to the communication-controlled base station device, and restricts communication with the base station device according to the content of the information related to the communication-controlled base station device. Good.
With the above system, before the call concentrates in a specific area, the communication restriction between the terminal device and the base station device is controlled based on the information related to the communication restriction broadcast from the broadcasting station. A state can be prevented beforehand.

The information related to the base station device for which communication is restricted includes the identification number of the base station device for which communication is restricted, and the terminal device, when the base station device to be communicated exists in the area The communication with the base station apparatus may be restricted.
By restricting the communication of the terminal device only when the communication partner base station device is restricted, it is possible to effectively prevent an overflow call or a congestion state.

Further, the information related to the communication-regulated base station device includes information indicating a degree of communication restriction performed by the base station device, and the terminal device has a plurality of communication restriction rules defined in advance according to the degree of communication restriction. Of the operations, a communication restriction operation corresponding to the degree of communication restriction performed by the communication target base station apparatus may be selected.
The communication restriction performed in the base station apparatus is classified into, for example, three levels of high, medium, and low, and the operation of communication restriction corresponding to this degree is defined in advance. The terminal device can perform communication while adjusting the load applied to the communication system by changing the operation of the communication restriction according to the received degree of communication restriction.

  Note that any combination of the above-described constituent elements, and those in which the constituent elements and expressions of the present invention are mutually replaced between methods, apparatuses, systems, and the like are also effective as an aspect of the present invention.

  With the communication control method according to the present invention and the terminal device and communication system using the same, to the base station in a specific area at the time of a disaster, etc. without increasing the burden on the base station while providing the minimum convenience for the terminal user Can be prevented from concentrating and falling into a congested state.

  FIG. 1 is a diagram showing a part of a configuration of a mobile phone communication system according to an embodiment of the present invention. A cellular phone communication system 100 according to the present embodiment includes base station apparatuses 20a to 20c, terminal apparatuses 201 to 206, an exchange station 30, a communication network 40, a broadcasting station 50, and a disaster headquarter 60.

  In this cellular phone communication system, a so-called cell system is adopted. In the cell system, a range where radio waves reach from a base station is divided into small areas (cells), and a base station is installed for each cell. Since different cells that are somewhat distant from each other can use the same frequency, the allocated frequency band can be efficiently used by many terminals. In FIG. 1, regions indicated by broken lines 10a to 10c correspond to cells.

  Base stations 20a to 20c are installed in the cells 10a to 10c, respectively. Terminal apparatuses 201 to 206 in each cell communicate with base station apparatuses 20a to 20c installed in the respective cells.

  The exchange 30 accommodates the base station devices 20a to 20c and is connected to the communication line network 40. The switching center 30 performs communication control between the base station apparatuses 20a to 20c and communication control between the base station apparatuses 20a to 20c and a fixed telephone (not shown) in the communication line network 40. The communication line network 40 means a communication line network including a general telephone line such as a fixed telephone.

  In such a mobile phone communication system, for example, when the terminal device 202 communicates with the terminal device 205, the terminal device 202 communicates with the base station device 20b, and the terminal device 205 communicates with the base station device 20c. The base station devices 20b and 20c can communicate with each other through the switching center 30 and the communication line network 40, so that the terminal device 202 and the terminal device 205 can communicate with each other. Further, when the terminal apparatus 202 makes a call with a fixed telephone, the terminal apparatus 202 communicates with the base station apparatus 20 b and is connected to the fixed telephone via the switching center 30 and the communication line network 40.

  The disaster headquarter 60 is a department that performs various disaster countermeasures when a disaster such as a large earthquake occurs, and means, for example, a fire department or a disaster management department of a local government. The disaster headquarter 60 is connected to the broadcasting station 50 via a network, and transmits information related to communication regulations necessary in the event of a disaster to the broadcasting station 50.

  The broadcasting station 50 means a broadcasting station capable of transmitting information over a wide area, and this broadcasting station corresponds to, for example, a television station or a radio station. The broadcast station 50 broadcasts information related to various communication restrictions to the terminal devices 201 to 206 based on information related to communication restrictions from the disaster headquarters 60. The broadcasting station 50 may be connected to a fixed telephone or the switching center 30 via the communication network 40.

  FIG. 2 shows a configuration of the terminal device 200 used in the communication system 100 according to the present embodiment. The terminal device 200 includes a signal processing unit 80, a mobile phone transmission / reception unit 82, a TV broadcast reception unit 84, a mobile phone transmission / reception antenna 86, a TV broadcast reception antenna 88, and an interface unit 90.

  The signal processing unit 80 is a block that controls the operation of the entire terminal device 200, and includes a CPU, a microcomputer, a memory, and the like. The signal processing unit 80 includes an analysis unit 92, a control unit 94, a communication unit 96, and a storage unit 98.

  The interface unit 90 includes a display, a microphone, a speaker, a button, and the like. Through the interface unit 90, the user performs a call, mail transmission / reception, and the like, and provides various information to the user.

  The function as a mobile phone is realized by a mobile phone transmitting / receiving antenna 86, a mobile phone transmitting / receiving unit 82, a signal processing unit 80, and an interface unit 90. The mobile phone transmission / reception antenna 86 transmits and receives radio waves. The mobile phone transmission / reception unit 82 performs signal amplification, frequency conversion, and modulation / demodulation required for communication with the base station. The communication unit 96 performs signal processing for performing communication with the base station apparatus.

  Functions related to broadcast reception are realized by a TV broadcast receiving antenna 88, a TV broadcast receiving unit 84, a signal processing unit 80, and an interface unit 90. The TV broadcast receiving antenna 88 is provided for receiving a TV broadcast and is designed to cover a frequency band broadcast from the broadcast station 50. The TV broadcast receiving unit 84 includes a tuner and a demodulator and functions as a tuner and a demodulator that demodulates a signal received by the TV broadcast receiving antenna 88.

  The analysis unit 92 analyzes the received TV broadcast signal and notifies the control unit 94 of the content. The control unit 94 controls the operation of each unit of the terminal device 200 according to the content of the broadcast analyzed by the analysis unit 92. For example, if the content of the broadcast analyzed by the analysis unit 92 is a normal TV broadcast, the control unit 94 controls the display and the speaker of the interface unit 90 so that the user can view the TV broadcast. If the content of the broadcast analyzed by the analysis unit 92 is information related to communication restriction, the control unit 94 instructs the communication unit 96 to restrict the communication operation, and notifies the user of the communication restriction. Therefore, various instructions are given to the interface unit 90. The storage unit 98 stores in advance information necessary for the terminal device 200 to perform an operation according to information related to communication restrictions.

  Each of these elements described as functional blocks can be composed of a CPU, memory, and other LSIs in terms of hardware, and in terms of software, such as a program having a reservation management function loaded in the memory. Realized. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.

  Operations of the mobile phone communication system 100 and the terminal device 200 configured as described above will be described. In the following, it is assumed that a disaster such as a large earthquake has occurred, and this disaster has occurred in the areas of the cells 10b and 10c.

  Returning to FIG. When a disaster occurs in the cells 10b and 10c, outgoing calls from within the area and incoming calls from outside the area are concentrated on the base station devices in the surrounding area where the disaster has occurred, that is, 20b and 20c, for safety confirmation. If this is left unattended, it will be difficult to connect the telephone, and so-called overflow calls will occur. In order to avoid this, the communication system 100 according to the present invention performs the following processing.

  When a disaster occurs, the disaster headquarter 60 predicts call concentration, line abnormality, and congestion in the surrounding area where the disaster has occurred, and broadcasts information related to communication regulations (hereinafter referred to as communication regulation information) to a broadcasting station. Send to 50.

  The communication restriction information includes, for example, an identification number (hereinafter referred to as a communication restriction area code) of an area where communication is restricted (hereinafter referred to as a communication restriction area code), a restriction level of outgoing / incoming calls in each area, and a telephone number exempted from outgoing restriction. Contains.

  The communication restriction area may be divided into areas for each cell, or may be an area where a plurality of cells are grouped. In this embodiment, the communication restriction area is divided into cells. And Accordingly, in this embodiment, the communication restriction area code corresponds to the divided cell number, that is, the identification number of the base station.

  The outgoing / incoming call restriction level represents the presence / absence of outgoing call restriction and the presence / absence of incoming call restriction. For example, information is assigned to a certain communication restriction area code such that 1 is restricted and 0 is not restricted.

  The outgoing call restriction exclusion number describes a telephone number that can be sent even when outgoing calls are restricted. For example, by broadcasting a disaster message dial or the like as this call restriction exclusion number, a user in the call restriction area can perform a minimum safety check or the like.

  FIG. 3 is a diagram illustrating an example of communication restriction information broadcast from the broadcast station 50. The communication restriction area code column 302 contains the identification number of the base station subject to communication restriction, the incoming call restriction column 304 shows whether there is an incoming call operation restriction for each communication restriction area, and the outgoing call restriction column 306 shows whether there is an outgoing operation restriction. However, the outgoing call restriction exclusion number 308 describes a telephone number that can be sent even when outgoing calls are restricted. For example, in this embodiment, 20b and 20c where a disaster occurred are broadcast as communication restricted area codes. In the incoming call restriction column 304 and the outgoing call restriction column 306, for example, 1 indicates restriction, and 0 indicates no restriction. In the case of FIG. 3, the area 20b is restricted for both incoming and outgoing calls, and the area 20c indicates that only outgoing calls are restricted.

  Returning to FIG. The broadcast station 50 broadcasts the communication restriction information to the terminal devices 201 to 206 as soon as the communication restriction information is received from the disaster headquarters 60. At this time, since the terminal devices 201 to 206 do not necessarily match the reception frequency with the frequency of the radio wave broadcast from the broadcast station 50, the disaster headquarters 60 in advance for each base station device 20a to 20c. It may be notified that the broadcast is started. Receiving the notification, the base station devices 20a to 20c use a broadcast channel BCCH (Broadcasting Control Channel) that is a downlink dedicated channel and notifies common information to all terminal devices in the same cell. Alternatively, the broadcast station 50 may notify that information related to communication restrictions is broadcast. In this case, when each terminal receives the broadcast channel BCCH, each terminal can receive a broadcast from the broadcast station 50.

  On the other hand, each of the terminal devices 201 to 206 performs location registration with respect to the base station using a common control channel CCCH (Common Control Channel). Each terminal device can obtain an area code (hereinafter referred to as a location registration area code) where the terminal device is currently located from the identification number of the base station of the registration destination. In the present embodiment, specifying the base station device 20 that is the communication partner is equivalent to specifying the cell 10 to which the terminal device belongs, and therefore, no particular distinction is made below.

  Each of the terminal devices 201 to 206 receives the communication restriction information broadcast from the broadcasting station 50. Each terminal identifies whether the location registration area code of each terminal corresponds to a communication restriction area code. If it is not included in the communication restriction area code, communication can be performed freely without any restrictions on incoming and outgoing calls and incoming calls as usual. When the location registration area code of each terminal device corresponds to a communication restriction area, operation restrictions are applied according to incoming and outgoing restrictions in the communication restriction area.

For example, when the communication restriction information shown in FIG. 3 is broadcast, the terminal device 201 existing in the cell 10a can make and receive calls as usual without any restrictions.
In the terminal devices 202, 203, and 204 existing in the cell 10b, both outgoing and incoming calls are restricted.
The terminal devices 205 and 206 existing in the cell 10c can only receive incoming calls, and outgoing calls are restricted. Incoming calls from mobile phone terminals etc. are disconnected leaving only the history.
However, even in this case, it is possible to make a call to the telephone numbers 03-XXXX-XXXX and 03-YYYY-YYYY broadcast as the call restriction exclusion number.

  The above is the operation of the communication system 100 according to the present embodiment. Next, the operation of the terminal device 200 according to the present embodiment will be described with reference to FIGS. FIG. 4 is a flowchart showing a control flow based on communication restriction information in terminal apparatus 200.

The terminal device 200 performs location registration with the base station device using the common control channel CCCH, and obtains a location registration area code at that time. This location registration area code is stored in the storage unit 98.
In the mobile phone communication system 100, prior to broadcasting the communication restriction information by the broadcast station 50, the broadcast of the communication restriction information is notified from the base station device 20 through the broadcast channel BCCH. The signal for notifying the communication restriction information is received by the mobile phone transmission / reception antenna 86 and processed by the mobile phone transmission / reception unit 82 and the communication unit 96. As a result of the signal processing, the communication unit 96 identifies that the received signal notifies the broadcast of the communication restriction information, and notifies the control unit 94 of the notification.
The control unit 94 receives this signal, activates the TV broadcast receiving unit 84, sets the reception frequency to the frequency band broadcast from the broadcast station 50, and the terminal device 200 is in a state in which it can receive broadcast of communication restriction information. Become.

Subsequently, the broadcasting station 50 starts broadcasting communication restriction information. The communication restriction information is received by the TV broadcast receiving antenna 88 and the TV broadcast receiving unit (S100).
Communication restriction information demodulated after reception is input to the analysis unit 92. The analysis unit 92 analyzes information included in the received communication restriction information (S102). Specifically, the area code of the area subject to call restriction, the area code of the area subject to call restriction, and the call restriction exclusion number are recognized. For example, when the communication restriction information shown in FIG. 3 is received, the analysis unit 92 identifies 20b as an area code subject to incoming call restriction, and identifies 20b and 20c as area codes subject to outgoing call restriction.

The control unit 94 refers to the storage unit 98 and acquires the location registration area code of the terminal device.
The operation restriction of the terminal device is controlled from the result analyzed by the analysis unit 92 and the location registration area code of the terminal itself (S104 to S116). First, the control unit 94 determines whether the location registration area code of its own terminal corresponds to the transmission restriction area code (S104). As a result of the determination, if it corresponds to the transmission restriction area (Y in S104), the transmission restriction flag is turned ON (S106). When the transmission restriction flag is turned ON, the control unit 94 restricts the transmission operation to the communication unit 96. As a result of the determination, if it does not correspond to the transmission restriction area code (N in S104), the transmission restriction flag is turned OFF (S108).

Next, the control unit 94 determines whether the location registration area code of the terminal itself corresponds to the incoming call restriction area code (S110). As a result of the determination, if it falls within the incoming call restriction area (Y in S110), the incoming call restriction flag is turned ON (S112). When the incoming call restriction flag is turned ON, the control unit 94 restricts the incoming operation to the communication unit 96. As a result of the determination, if it does not correspond to the incoming call restriction area code (N in S110), the incoming call restriction flag is turned OFF (S114).
Through the above determination, the control unit 94 updates the restriction state display displayed on the display included in the interface unit 90 (S116). You may display on a display so that a regulation content may be understood as an icon display showing states, such as a battery remaining amount and manner mode.

  The terminal device that has received the communication restriction information selects a predetermined restriction on outgoing / incoming operation based on the state of the outgoing / incoming call restriction flag. If the transmission restriction flag is ON when the user tries to make a call from the terminal device, a warning that the call cannot be made because the call is under restriction is displayed on the screen, and no outgoing call processing is performed. However, normal call processing is performed for calls to telephone numbers that are not subject to call control. Further, it is possible to make a call to a specific number such as 110 or 119 even if the call is restricted. If the transmission restriction flag is OFF, normal transmission processing is performed. If there is an incoming call and the incoming call restriction flag is ON, only the fact that there was an incoming call is displayed on the screen and the call is immediately disconnected. The user may be notified of an incoming call through another interface such as voice. If the incoming call restriction flag is OFF, normal incoming call processing is performed.

  The restriction operation for outgoing / incoming calls is canceled as follows. When the terminal apparatus moves from the original area and confirms that the position registration area code has been updated when registering the position in the base station using the common control channel CCCH, the analysis unit 92 again performs the flowchart shown in FIG. Processes S102 to S116 are performed. As a result, when both the outgoing call restriction flag and the incoming call restriction flag are turned off, the outgoing / incoming call restriction operation is canceled.

  Further, when it is determined that communication regulation is unnecessary due to disaster recovery or the like, the disaster headquarter 60 notifies the broadcast station 50 to that effect. The broadcast station 50 broadcasts an area code of an area that does not exist as communication restriction information, or does not broadcast an area code. As a result, in the terminal device 200, the location registration area code and the received area code cannot match, so both the outgoing call restriction flag and the incoming call restriction flag are turned OFF, and the outgoing / incoming call restriction operation is released. Alternatively, the call restriction may be canceled from the base station apparatus using the broadcast channel BCCH.

FIG. 5 is a simplified sequence diagram between the base station apparatus 20 and the terminal apparatus 200 when the terminal apparatus makes a call and communicates with another communication apparatus. Normally, the terminal device 200 performs location registration at random using the common control channel CCCH (S200). The terminal device 200 transmits to the base station installed in the cell accommodated by the common control channel CCCH to notify the call (S202). Thereafter, the base station and the exchange station negotiate with the communication partner, and a channel is allocated for communication between the terminal device 200 and the base station (S204). When the channel assignment is completed, the terminal device 200 and the base station communicate with each other in synchronization, and communication with the counterpart communication device becomes possible (S206, S208).
When the outgoing call is restricted in the communication system 100 according to the embodiment of the present invention, all sequences after S204 are interrupted. At this time, only the common control channel CCCH for location registration is transmitted from the terminal device 200. As a result, traffic between the base station terminal devices can be reduced, and the load on the base station device 20 and the exchange 30 can be reduced. The same applies to the case where the terminal device 200 receives an incoming call.

The configuration and operation of the communication system 100 and the terminal device 200 according to the present embodiment have been described above. According to the communication system 100 according to the present embodiment, it is possible to realize generation of overflow calls and avoidance of congestion due to call concentration in a specific area at the time of a disaster.
Moreover, in the Example which concerns on this invention, communication regulation information is distributed without a base station by the broadcast by a broadcast station. Therefore, for example, the load on the base station can be reduced as compared with a case where information for simply restricting outgoing and incoming calls is notified to the terminal by the broadcast channel BCCH from the base station.
Further, in the communication restriction by the broadcast channel BCCH, there is a limit to the amount of information that can be notified to the terminal device.

  It is to be understood by those skilled in the art that these embodiments are exemplifications, and that various modifications can be made to the combination of each component and each processing process, and such modifications are also within the scope of the present invention. .

  For example, in the present embodiment, as shown in FIG. 3, the case where only the acceptance / rejection operation notification is notified as the communication restriction information to be analyzed by the analysis unit 92 has been described. May be provided. As the outgoing / incoming call restriction level representing the degree of incoming / outgoing call restriction, for example, restrictions on the operation of the terminal device expressed in three stages 1 to 3 are defined in advance. This restriction level is a value that specifies the degree of restriction of outgoing / incoming calls in stages, 1 is incoming / outgoing calls but is disconnected at a fixed time, 2 is outgoing calls, incoming calls are only displayed, 3 is forced power supply You may prescribe | regulate like interruption | blocking. In this case, an operation restriction corresponding to each restriction level is stored in the storage unit 98 of the terminal device 200, and the outgoing / incoming call is restricted with reference to the storage unit 98 based on the analysis result of the analysis unit 92. Just do it. The terminal device 200 can perform communication while adjusting the load applied to the communication system 100 by changing the operation of communication restriction according to the received restriction level.

  In the present embodiment, the case where the disaster headquarter 60 requests the broadcast station 50 to broadcast the communication restriction information has been described. However, even if the communication carrier operating the communication system requests the broadcast of the communication restriction information. Good. Since the communication carrier knows the congestion status of each line, the processing capacity of each base station apparatus, etc., more appropriate communication regulation is possible.

  In this embodiment, the communication restriction area broadcast from the broadcasting station 50 is divided in units of cells, but may be divided in larger units. For example, the broadcast station 50 may broadcast an area including more base stations as a unit as a communication restricted area. In this case, the information amount of the communication restriction area included in the communication restriction information to be broadcast can be reduced, and the analysis processing of the communication restriction information in the analysis unit 92 of the terminal device 200 can be reduced.

  In this embodiment, the case where the operation of the terminal device is controlled by broadcasting has been described. However, the base station or the exchange station may be operated in conjunction with the control of the operation of the terminal device. For example, when an exchange that accommodates a base station in an incoming call restriction area processes a call to a terminal device that is registered in the restricted base station, a voice message indicating that the call cannot be answered due to incoming call restriction is sent from the exchange The base station calls the terminal for a minimum time during which an incoming call can be detected and immediately disconnects. By performing such processing, it is possible to minimize the bandwidth occupation time of communication between the base station and the terminal device.

It is a figure which shows a part of structure of the mobile telephone communication system which concerns on the Example of this invention. It is a figure which shows the structure of the terminal device used for the communication system of FIG. It is a figure which shows an example of the communication control information broadcast from a broadcasting station. It is a flowchart showing the flow of control based on the communication regulation information in the terminal device of FIG. It is the simplified sequence diagram between a base station and a terminal device when a terminal device makes a call.

Explanation of symbols

  10a-10c cell, 20a-20c base station, 30 switching office, 40 communication network, 50 broadcast station, 60 disaster headquarters, 80 signal processing unit, 82 mobile phone transmission / reception unit, 84 TV broadcast receiving unit, 86 mobile phone communication antenna 88 TV broadcast receiving antenna, 90 interface unit, 92 control unit, 94 analysis unit, 96 communication unit, 98 storage unit, 100 mobile phone communication system, 200-206 terminal device.

Claims (7)

A communication unit that communicates with the base station device;
An area acquisition unit for acquiring information on an area where the base station device exists;
A receiving unit that receives information about a base station device whose communication is restricted from a broadcasting station;
Based on the information regarding the communication-regulated base station device received by the receiving unit and the information regarding the area where the base station device exists acquired by the area acquiring unit, the base station device is transmitted to the communication unit. A control unit for instructing restriction of communication with
A terminal device comprising: The information regarding the area where the base station device acquired by the area acquisition unit is an identification number of the base station device,
The information regarding the communication-restricted base station apparatus received by the receiving unit includes an identification number of the communication-restricted base station apparatus,
The control unit, when the identification number of the base station device acquired in the area acquisition unit corresponds to the identification number of the base station device subjected to communication received in the reception unit, to the communication unit The terminal device according to claim 1, wherein the terminal device instructs to limit communication with the base station device. The information related to the communication-regulated base station device to be received by the receiving unit further includes an identification number of a communication device that is not subject to transmission regulation,
The control unit permits the communication unit to make a call to an identification number of a communication device that is not subject to the call restriction even when the information related to the communication restricted base station device indicates a restriction on a call origination operation. The terminal device according to claim 1, wherein: The information on the communication-regulated base station apparatus to be received by the receiving unit includes information indicating the degree of communication regulation performed by the base station apparatus,
The control unit predefines a plurality of communication restriction operations according to the degree of communication restriction performed by the base station device, and performs communication restriction operations corresponding to the degree of communication restriction performed by the base station device. The terminal device according to claim 1, wherein the terminal device is selected and instructed to the communication unit.   When the control unit receives a call from the base station device when the information related to the communication-restricted base station device received by the receiving unit indicates a restriction on an incoming call operation, the control unit receives the user of the terminal device via a predetermined interface. The terminal device according to any one of claims 1 to 4, wherein the terminal device is notified to that effect, and further, the communication unit is instructed to interrupt the incoming call processing after the call. The broadcast station broadcasts information on base station devices that are restricted in communication,
The terminal device receives information related to the communication-restricted base station device, and restricts communication with the base station device according to the content of the received information related to the communication-restricted base station device. Method. A terminal device;
A base station device communicating with the terminal device;
A broadcast station that broadcasts information on a base station device whose communication is restricted with respect to the terminal device,
The terminal device receives information related to the communication-restricted base station device, and restricts communication with the base station device according to the content of the information related to the communication-restricted base station device. system.

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