JP2015231134A - Policy distribution device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a communication terminal to autonomously perform without omission use restriction corresponding to a use restriction section without installing a special device per use restriction section.SOLUTION: A policy distribution device holds first information indicating the position of a use restriction section where a particular function of a communication terminal is restricted, and second information indicating use restriction contents for the communication terminal corresponding to each use restriction section. The policy distribution device obtains the current position of a first communication terminal, selects use restriction sections at least a part of which is included in a prescribed region including the obtained current position of the first communication terminal from the first information, selects use restriction contents corresponding to the respective selected use restriction sections from the second information, and determines a use restriction policy including the selected use restriction sections and the use restriction contents corresponding to the respective selected use restriction sections.

Description

  The present invention relates to a policy distribution device.

  With the recent development of communication technology, communication terminals such as mobile phones and tablets are rapidly spreading. The user can continue to use the communication terminal without changing the setting even in a place where the use of the communication terminal should be restricted such as in an airplane or a hospital. Similarly, even in places such as movie theaters and concert halls where publicity is high and others are disturbed by the ringtone of the communication terminal, the user can communicate without setting the communication terminal to silent mode. You can continue to use the terminal. In particular, there is a possibility that a situation related to human life such as a malfunction of a medical device may occur due to a radio wave transmitted from a communication terminal.

  As a method of restricting the function of the communication terminal, it is conceivable to prompt the user to switch to the manner mode, turn off the power, or the like by in-car announcement, in-flight announcement, poster or the like. However, whether or not the user changes the setting according to these instructions is left to the user's intention, so it is difficult to thoroughly change the setting. Therefore, in order to prevent the user from forgetting the setting and to thoroughly limit the functions, it is necessary to uniformly limit the functions of the communication terminal from the outside.

  As background art of this technical field, there is JP-A-2001-86566 (Patent Document 1). In this gazette, “a use restriction device 105 that covers the use restriction area 108 and notifies the same control signal and use restriction message as the base station is installed. The mobile terminal 101 that has moved into the use restriction area 108 is installed. On the other hand, by causing the use restriction device 105 to be recognized as a base station, idle handoff is performed, and by receiving a use restriction message, the mobile terminal 101 is shifted to the operation restriction mode to restrict outgoing calls. Since the mobile terminal 101 receives control information from the use restriction device using the long code mask corresponding to the use restriction device 105, the mobile terminal 101 may receive an incoming message by paging from the base stations 102 and 103. Incoming calls can also be restricted ”(see summary).

  On the other hand, there is a technology for transmitting a policy for selecting a connection route for a plurality of wireless systems from a network side to a communication terminal as a technology that enables control of all terminals in an area without installing a special device in a facility. is there. For example, ANDSF (Access Network Discovery and Selection Function) described in Non-Patent Document 1 is known.

  In the technique of Non-Patent Document 1, the communication terminal applies a policy distributed from the network side. That is, in the technique described in Non-Patent Document 1, the network side controls which wireless system the communication terminal is connected to. Specifically, in the technology described in Non-Patent Document 1, the network side comprehensively determines the congestion status of the wireless system around the communication terminal, the position of the communication terminal, the time zone, etc. Control the terminal uniformly in real time.

JP 2001-86566 A

3GPP TS24.312 v12.3.0 Access Network Discovery and Selection Function (ANDSF) Management Object (MO)

  The technique described in Patent Literature 1 has a problem that a facility manager is burdened on operation and cost because a use restriction device is installed for each facility that requires restriction on the use of communication terminals. Furthermore, since the technology described in Patent Document 1 connects the communication terminal in the use restriction area to the use restriction device installed in the facility, for example, the presence of the communication terminal cannot be recognized from the network side. The communication terminal cannot be controlled. For this reason, there is a problem that, for example, in the event of an emergency such as an earthquake, the use restriction is not released and the user cannot communicate.

  In view of these problems, it is desirable to automatically and uniformly control the communication terminal from the network side as in the technique described in Non-Patent Document 1. However, although the technology described in Non-Patent Document 1 distributes a policy for selecting connection paths for a plurality of wireless systems from a network side to a communication terminal, it does not have a mechanism for distributing a policy regarding use restriction of the communication terminal. . It is an object of the present invention to autonomously execute the use restriction without omission according to the policy received from the network side by the communication terminal in the area without installing a special device for each use restriction area of the communication terminal. To do.

  In order to solve the above problems, the present invention employs the following configuration, for example. A policy distribution device for transmitting a use restriction policy for restricting a specific function of the communication terminal to a communication terminal, wherein the first information indicates a position of a use restriction area where the specific function of the communication terminal is restricted Second information indicating the use restriction content of the communication terminal corresponding to each use restriction area, a position information receiving unit for obtaining the current position of the first communication terminal, and the obtained current position of the first communication terminal Is selected from the first information, and the use restriction content corresponding to each of the selected use restriction areas is selected from the second information, and the selected use restriction is selected. A policy determining unit that determines a usage restriction policy including an area and a usage restriction content corresponding to each of the selected usage restriction areas, and the determined usage restriction policy Including a policy distribution unit to be transmitted to one communication terminal, a policy distribution device.

  According to one aspect of the present invention, it becomes possible for a communication terminal to autonomously set a use restriction corresponding to a use restricted area, and a setting omission due to a user forgetting to set or the like can be prevented.

1 is an explanatory diagram illustrating a network configuration example of a policy distribution system in Embodiment 1. FIG. 1 is a block diagram illustrating a configuration example of a policy distribution device according to a first exemplary embodiment. 4 is an example of a restricted area table in the first embodiment. 7 is an example of a restriction item / condition table in the first embodiment. 6 is an example of a usage restriction policy in the first embodiment. 1 is a block diagram illustrating a configuration example of a communication terminal in Embodiment 1. FIG. FIG. 9 is a sequence diagram illustrating an example of a series of operation procedures from policy distribution to policy cancellation between a policy distribution apparatus and a communication terminal in the first embodiment. 6 is a flowchart illustrating an operation example from when the policy distribution apparatus receives position information until it transmits a route selection policy and a use restriction policy in the first embodiment. 5 is a flowchart illustrating an operation example from when the communication terminal acquires current position information to when use restriction is set and released in the first embodiment. 6 is a flowchart illustrating an example of a current area determination process according to the first embodiment. 6 is a flowchart illustrating an example of state confirmation / condition determination processing according to the first exemplary embodiment. 6 is a flowchart illustrating an example of restriction setting / cancellation execution processing according to the first exemplary embodiment. It is a figure which shows the example of a use restriction policy and a restriction area in the policy distribution apparatus of Example 1. FIG. 6 is a flowchart illustrating an operation example in which the communication terminal receives the emergency notification and releases the use restriction in the first embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. It should be noted that this embodiment is merely an example for realizing the present invention, and does not limit the technical scope of the present invention. In each figure, the same reference numerals are given to common configurations.

  FIG. 1 shows a network configuration example of the policy distribution system of this embodiment. The policy distribution system includes a policy distribution device 12 and a communication terminal 13. The policy distribution device 12 and the communication terminal 13 are each connected to the mobile network 11 and communicate with each other. The policy distribution device 12 distributes the policy to the communication terminals 13 connected via the mobile network 11.

  The mobile network 11 is a wireless communication system that mediates data communication between the communication terminal 13 and the policy distribution device 12. For example, a wireless LAN, a mobile phone network, and a combination of a wireless LAN and a mobile phone network are examples of the wireless communication system. For example, a smartphone or a tablet terminal is an example of the communication terminal 13. The communication terminal 13 performs wireless communication corresponding to a plurality of wireless communication standards, for example, WiFi (registered trademark, hereinafter the same), 3G, LTE (registered trademark, the same hereinafter), or the like.

  FIG. 2 shows a configuration example of the policy distribution device 12 in this embodiment. The policy distribution device 12 is configured on a computer including a CPU 110, a storage device 120, and a communication unit 130, for example. The CPU 110 includes a processor and / or a logic circuit that operates according to a program, inputs / outputs data, reads / writes data, and executes each program described below. The storage device 120 temporarily loads and stores a program and data executed by the CPU 110, and further holds each program and each data.

  The storage device 120 holds a position information receiving unit 41, a policy determining unit 42, and a policy distributing unit 46, which are programs. In addition, the storage device 120 includes a route selection policy storage unit 43, a restricted area storage unit 44, and a restricted item / condition storage unit 45, which are areas for storing data. The communication unit 130 is an interface that performs communication processing with an external device by wire or wireless.

  The program is executed by the CPU 110 to perform a predetermined process using the storage device 120 and the communication unit 130. Therefore, in the present embodiment and the other embodiments, the description with the program as the subject may be the description with the CPU 110 as the subject. Alternatively, the process executed by the program is a process performed by a computer and a computer system on which the program operates.

  The CPU 110 operates as a functional unit that realizes a predetermined function by operating according to a program. For example, the CPU 110 functions as a position information receiving unit by operating according to the position information receiving unit 41, and functions as a policy determining unit by operating according to the policy determining unit 42. Furthermore, the CPU 110 also operates as a functional unit that realizes each of a plurality of processes executed by each program. A computer and a computer system are an apparatus and a system including these functional units. The same applies to the programs held by the communication terminal 13.

  The position information receiving unit 41 receives the current position information of the communication terminal 13 transmitted from the communication terminal 13 connected to the mobile network 11. The route selection policy storage unit 43 stores a policy for the communication terminal 13 to select a connection route from a plurality of wireless communication systems, that is, a route selection policy. The route selection policy storage unit 43 holds information about the optimum connection route according to the current location information of the communication terminal 13 such as, for example, which wireless system is connected at the highest communication speed for each location of the communication terminal 13. To do.

  The restricted area storage unit 44 stores a restricted area table 600. The restricted area indicates an area where restriction of a specific function in the communication terminal 13 is required, such as a hospital or a movie theater. Hereinafter, the restriction on the specific function is referred to as use restriction or simply restriction.

  The restriction of a specific function prohibits the entire use of the function or the use of a part of the function. For example, when the incoming call notification function by sound is restricted, the notification function is stopped, or the use of a volume higher than a predetermined value is prohibited, that is, the incoming call notification volume is limited to a range smaller than the predetermined value. Is done. When the radio wave transmission function is restricted, the transmission function is stopped, or the use of radio waves with a radio wave level equal to or higher than a predetermined value is prohibited, that is, the power level of the radio wave to be transmitted is smaller than the predetermined value. Limited.

  The use restriction indicates the setting of the communication terminal 13 required in, for example, a public facility or a medical facility. Limiting the output by the communication terminal 13 such as limiting the incoming sound volume of the communication terminal 13 and limiting the power level of the transmission radio wave of the communication terminal 13 is an example of usage restrictions in the communication terminal 13.

  The restricted area table 600 holds the position information of all restricted areas existing in the area controlled by the policy distribution device 12 and the area type of the restricted area. The area type is information that classifies the restricted area according to the content of the use restriction.

  In the present embodiment, the area type of the area where the volume (for example, the incoming volume) of the communication terminal 13 such as a movie theater needs to be restricted is the area A, the power of the transmission radio wave of the communication terminal 13 such as a hospital. Assume that the area type of the area where the level restriction is required is area B, and the area type of the area where the transmission radio wave of the communication terminal 13 such as an airport is required is area C.

  The restriction item / condition storage unit 45 stores a restriction item / condition table 700. The restriction item / condition table 700 holds a restriction item to be set, a condition for executing the restriction, and a condition for releasing the restriction for each area type indicated in the restriction area table 600.

  The policy determining unit 42 acquires the current position information of the communication terminal 13 from the position information receiving unit 41. The policy determination unit 42 makes an inquiry to the route selection policy storage unit 43 and determines a route selection policy according to the acquired current position information. Further, the policy determination unit 42 makes an inquiry to the restricted area storage unit 44 and the restriction item / condition storage unit 45 to determine a use restriction policy according to the acquired current position information.

  The use restriction policy is a policy for the communication terminal 13 to set use restriction. Further, the use restriction policy may further include a policy for releasing the use restriction. The release of the use restriction indicates that the use restriction being set is in an initial state (for example, the volume is on, the transmission radio wave is not restricted, etc.). Further, the cancellation of the use restriction may indicate that the restriction item for which the use restriction is set is set to a state immediately before the use restriction is set.

  The use restriction policy includes restricted area information and restricted items / conditions. The restricted area information is information on the use restriction target area in the area including the current position of the communication terminal 13 received from the communication terminal 13, and the policy determining unit 42 acquires the information from the restricted area table 600. It is determined. A circle with a radius of 1 km centered on the current position of the communication terminal 13 is an example of the area including the current position of the communication terminal 13. The restriction item / condition is information on the restriction item corresponding to the area type included in the restricted area information, and is determined by the policy determination unit 42 acquiring the information from the condition table 700. Details of the usage restriction policy will be described later with reference to FIG.

  The policy distribution unit 46 transmits the route selection policy and the usage restriction policy determined by the policy determination unit 42 to the communication terminal 13. For example, when the communication terminal 13 moves outside the predetermined area including the previous position transmission point, the communication terminal 13 transmits the current position information of the communication terminal 13 to the policy distribution device 12. At this time, the policy distribution device 12 cannot always grasp the current position of the communication terminal 13. If the policy distribution apparatus 12 sends the use restriction policy 80 only in the restricted area to which the received current position information transmission point belongs, restriction leakage occurs until the communication terminal 13 transmits the next current position information. there is a possibility.

  Therefore, the policy distribution apparatus 12 transmits the use restriction policy 80 in all restricted areas in the area including the predetermined area to the communication terminal 13, so that the communication terminal 13 transmits the current position information, It becomes possible to prevent a control omission in a restricted area that may exist in a section until the next current position information is transmitted.

  For example, when the predetermined area is a circle having a radius of 1 km centered on the current position transmitted by the communication terminal 13, the policy distribution device 12 may be a circle having a predetermined radius of more than 1 km centered on the current position. What is necessary is just to transmit the use restriction policy 80 in the restricted area which contains at least one part to the communication terminal 13 inside. Note that the fact that the predetermined area is a circle having a radius of 1 km centered on the previous position transmission point of the communication terminal 13 is the same as transmitting the current position information every time the communication terminal 13 moves 1 km. Further, for example, the communication terminal 13 may transmit the current position of the communication terminal 13 to the policy distribution device at regular intervals.

  FIG. 3 shows an example of the restricted area table 600. The restricted area table 600 is stored in the restricted area storage unit 44 and holds all restricted area information in the area managed by the policy distribution device 12. The restricted area table 600 includes an area number 601, a target area 602, an area type 603, and a remark 604.

  The area number 601 is a number that uniquely identifies each target area 602. The target area 602 indicates the range of the area subject to use restriction by information including, for example, latitude and longitude. For example, the target area 602 may be defined by a rectangle having a start point and an end point as diagonal lines and sides parallel to the meridian and the latitude line, or may be defined by a circle determined by the center and the radius. The area type 603 indicates the area type to which the target area 602 belongs. In this embodiment, an example is described in which the area A is a movie theater, the area B is a hospital, and the area C is an airport. However, the area type is not limited to these. A remark 604 indicates a location corresponding to the area type. Note that the restricted area table 600 may not include the remarks 604.

  FIG. 4 shows an example of the restriction item / condition table 700. The restriction item / condition table 700 is stored in the restriction item / condition storage unit 45, and holds restriction items for each area type, and setting conditions and release conditions for the restriction. The restriction item / condition table 700 includes an area type 701, a volume 702, a transmission radio wave 703, a setting condition 704, and a release condition 705.

  The area type 701 includes all area types included in the restricted area table 600. The volume 702 and the transmission radio wave 703 are examples of restriction items. The volume 702 indicates the setting content related to the incoming volume of the communication terminal 13 in the area type 701. A transmission radio wave 703 indicates the setting content regarding the power level of the transmission radio wave of the communication terminal 13 in the area type 701. The setting condition 704 indicates a condition for the communication terminal 13 to set a usage restriction indicated by the volume 702 and the transmission radio wave 703. The cancel condition 705 indicates a condition for the communication terminal 13 to cancel the use restriction indicated by the volume 702 and the transmission radio wave 703.

  FIG. 5 shows an example of the usage restriction policy 80 that the policy distribution apparatus 12 transmits to the communication terminal 13. The use restriction policy 80 includes restriction area information 81 extracted from the restriction area table 600 and restriction items / conditions 82 extracted from the restriction item / condition table 700. The restricted area information 81 includes, for example, information on restricted areas that are extracted from the restricted area table 600 and exist in a specific area including the current position of the communication terminal 13.

  The restriction item / condition 82 includes, for example, a use restriction item corresponding to the area type 603 included in the extracted restricted area information 81, a condition for setting the use restriction, and a condition for canceling the use restriction. Further, if at least a part of the range indicated by the target area 602 is included in the specific area including the current position of the communication terminal 13, the target area 602 is included in the restricted area information 81.

  FIG. 6 shows a configuration example of the communication terminal 13 in the present embodiment. In the present embodiment, an example in which the communication terminal 13 employs LTE and WiFi as communication methods will be described. The communication terminal 13 includes a CPU 210, a storage device 220, a wireless communication unit 31, and a position information acquisition unit 32.

  The storage device 220 is a location information transmission unit 34, a policy reception unit 55, a route selection state confirmation unit 36, a selection system switching unit 37, a state recording unit 59, a condition determination unit 60, and a use restriction setting / release execution, which are programs. The unit 61 is held. The storage device 220 includes a location information storage unit 33 and a use restriction policy storage unit 58, which are areas for storing data. The wireless communication unit 31 includes an LTE transmission / reception unit 62 and a WiFi transmission / reception unit 63, and performs wireless communication processing with a base station in the mobile network 11.

  The position information acquisition unit 32 acquires the current position information of the communication terminal 13 using a position source such as GPS, for example, and stores it in the position information storage unit 33. The current position of the communication terminal 13 includes latitude information and longitude information. The position information storage unit 33 holds the current position information acquired by the position information acquisition unit 32. The position information transmission unit 34 acquires the current position information held by the position information storage unit 33 and transmits it to the policy distribution device 12. For example, the position information transmission unit 34 is configured to display the current position when a predetermined time has elapsed from the time when the previous current position information was transmitted or when the communication terminal 13 has moved a certain distance from the point where the previous current position information was transmitted. Send information.

  The policy receiving unit 55 receives the route selection policy and the usage restriction policy 80 transmitted from the policy distribution device 12. The use restriction policy 80 includes restricted area information 81 extracted from the restricted area table 600 and restricted items / conditions 82 extracted from the restricted item / condition table 700.

  The route selection state confirmation unit 36 confirms whether the communication terminal 13 is currently connected to an LTE or WiFi wireless system. When the connection route described in the received route selection policy is different from the route confirmed by the route selection state confirmation unit 36, the selection system switching unit 37 performs switching of the wireless system to be selected according to the received route selection policy. . The state recording unit 59 records the restriction state of the communication terminal 13. The restricted state indicates a state in which the use restriction corresponding to each area type is being set or released. Details will be described later with reference to FIG.

  The condition determination unit 60 is recorded in the current position information of the communication terminal 13 stored in the position information storage unit 33, the use restriction policy 80 stored in the use restriction policy storage unit 58, and the status recording unit 59. Whether the communication terminal 13 satisfies the setting condition 704 or the release condition 705 described in the received use restriction policy 80 is determined based on the restriction state of the communication terminal 13 that is present. The use restriction setting / cancellation execution unit 61 executes use restriction setting or cancellation processing based on the determination result by the condition determination unit 60.

  For example, a conventional ANDSF system requires communication in order to send a policy. For this reason, the conventional ANDSF system cannot distribute a policy to a communication terminal 13 in an environment where communication has been cut off, such as a communication terminal 13 that has stopped transmitting radio waves in an airplane or the like. .

  On the other hand, the policy distribution apparatus 12 according to the present embodiment sends the use restriction policy 80 including the release condition 705 to the communication terminal 13 before executing the use restriction setting. Therefore, even when the communication terminal 13 stops the transmission radio wave due to the use restriction, the communication terminal 13 determines whether or not the release condition 705 is satisfied, and if satisfied, the use restriction can be set and released autonomously. it can. That is, the communication terminal 13 can cancel the use restriction without the user's hand.

  FIG. 7 shows an operation example at the time of policy distribution of the policy distribution system of this embodiment. The location information transmission unit 34 transmits the current location information of the communication terminal 13 acquired by the location information acquisition unit 32 to the policy distribution device 12, and the location information reception unit 41 receives the current location information (S101). . The policy determining unit 42 determines the route selection policy and the usage restriction policy 80 according to the received current position information (S102).

  The policy distribution unit 46 transmits the determined route selection policy and use restriction policy to the communication terminal 13, and the policy reception unit 55 receives the route selection policy and the use restriction policy (S103). When the connection route described in the received route selection policy is different from the current connection route selection state, the selection system switching unit 37 switches the wireless system to be selected according to the route selection policy (S104).

  The policy receiving unit 55 stores the received use restriction policy 80 in the use restriction policy storage unit 58 (S105). If it is determined that the communication terminal 13 satisfies the setting condition 704 indicated in the use restriction policy 80, the use restriction setting / cancellation executing unit 61 executes use restriction setting (S106). If the use restriction setting / cancellation executing unit 61 determines that the communication terminal 13 satisfies the release condition 705 indicated in the use restriction policy 80, the use restriction setting / cancellation executing unit 61 executes use restriction release (S107).

  When the use restriction is removed, the location information transmission unit 34 transmits the current location information of the communication terminal 13 to the policy distribution device 12 (S108). For example, consider a case where the communication terminal 13 moves a certain distance from the previous position information transmission point and cancels the use restriction while executing the use restriction setting to turn off the transmission power. At this time, since the communication terminal 13 cannot receive a new use restriction policy while executing the use restriction, there is a possibility that when the use restriction is released, the use restriction policy at the release point is not held. . Accordingly, the communication terminal 13 can acquire a use restriction policy based on a new current position by transmitting the position information when the use restriction is released, and thus it is possible to prevent the use restriction from being omitted.

  FIG. 8 shows an operation example from when the policy distribution device 12 of this embodiment receives the current position information of the communication terminal 13 to distribution of the route selection policy and the use restriction policy 80. The position information receiving unit 41 receives the current position information from the communication terminal 13 (S1701). The policy determination unit 42 determines a route selection policy based on the received current position information and the information held by the route selection policy storage unit 43. Further, the policy determination unit 42 determines the use restriction policy 80 based on the received current position information and the information held in the restricted area storage unit 44 and the restriction item / condition storage unit 45 (S1702).

  The policy distribution unit 46 transmits the determined route selection policy and use restriction policy 80 to the communication terminal 13 (S1703). Note that the policy distribution apparatus 12 may interchange the order in which the process in step S1702 and the process in step S1703 are performed, or may perform both processes in parallel.

  FIG. 9 shows an operation example from the acquisition of the current position information to the setting and release of the use restriction in the communication terminal 13 of the present embodiment. The position information acquisition unit 32 acquires the current position information of the communication terminal 13 (S1201). Based on the current position information and the previous position information transmission point held by the position information storage unit 33, the position information transmission unit 34, for example, whether the communication terminal 13 has moved a certain distance from the previous position information transmission point Is determined (S1202).

  When the position information transmission unit 34 determines that the communication terminal 13 has moved a certain distance (S1202: YES), the acquired current position information is transmitted to the policy distribution device 12 (S1203). If the position information transmitting unit 34 determines that the communication terminal 13 has not moved a certain distance (S1202: NO), the process proceeds to step S1206.

  The location information transmission unit 34 checks whether there is a response from the policy distribution device 12 that the current location information has been received (S1204). When the position information transmission unit 34 confirms the response (S1204: YES), the position information transmission unit 34 substitutes the transmitted current position information for the previous position information transmission point held by the position information storage unit 33 (S1205). If the position information transmission unit 34 cannot confirm the response in step S1204 (S1204: NO), the process proceeds to step 1206. Subsequently, the policy receiving unit 55 confirms whether the route selection policy and the use restriction policy are received (S1206).

  When the policy reception unit 55 confirms reception of the route selection policy and the usage restriction policy (S1206: YES), the policy reception unit 55 stores the received usage restriction policy in the usage restriction policy storage unit 58 (S1207). If the policy receiving unit 55 fails to confirm reception of the route selection policy and the usage restriction policy (S1206: NO), the process proceeds to step S1210. The route selection state confirmation unit 36 confirms whether the wireless system currently selected by the communication terminal 13 matches the connection route described in the received route selection policy (S1208).

  If the wireless system currently selected by the communication terminal 13 matches the received route selection policy (S1208: YES), the process proceeds to step S1210. When the wireless system currently selected by the communication terminal 13 does not match the received route selection policy (S1208: NO), the selected system switching unit 37 switches the connection destination of the wireless system according to the received route selection policy ( S1209).

  Subsequently, in the condition determination unit 60, the position indicated by the acquired current position information is in the target area 602 of one of the restricted areas indicated by the latest use restriction policy 80 stored in the use restriction policy storage unit 58. Is determined (S1210). Details of the determination will be described later with reference to FIG. The condition determination unit 60 checks the current use restriction state of the communication terminal 13 and the area type to which the communication terminal 13 currently belongs, and determines whether the state satisfies the setting condition or the release condition 705 (S1211). Details of the determination will be described later with reference to FIG.

  The use restriction setting / cancellation executing unit 61 performs setting / execution processing related to use restriction based on the condition determination made in the process of step S1211 (S1212). Details of the setting / execution processing will be described later with reference to FIG.

  Note that the communication terminal 13 may perform the connection route switching process and the usage restriction setting process in the same order, or may perform both processes in parallel. In this embodiment, the policy distribution device 12 may not distribute the route selection policy. At this time, the policy distribution device 12 may not include the route selection policy storage unit 43, and the communication terminal 13 may not include the route selection state confirmation unit 36 and the selection system switching unit 37. At this time, the policy distribution device 12 and the communication terminal 13 can omit the steps related to the route selection policy in FIGS.

  FIG. 10 shows an example of a subroutine showing the current area determination process corresponding to step S1210 of FIG. The current area determination process is a process in which the communication terminal 13 determines whether the current position of the communication terminal 13 is within the target area 602 of the area indicated in the received use restriction policy 80.

  Hereinafter, an example of a method for determining that the communication terminal 13 has entered the target area 602 will be described. For example, when the target area 602 is defined by a rectangle having sides parallel to the start point (a, b) and the end point (c, d) and parallel to the meridian and latitude lines, the coordinates of the current position of the communication terminal 13 are defined. When (x, y) satisfies a <x <c and b <y <d, the condition determination unit 60 determines that the communication terminal 13 has entered the target area 602.

  For example, when the target area 602 is defined by a circle with a radius of 1 km centered on the point (e, f), the distance between the coordinates (x, y) of the current position of the communication terminal 13 and the center (e, f) Is less than 1 km, the condition determination unit 60 determines that the communication terminal 13 has entered the target area 602.

  In this embodiment, the zone flag is a flag indicating whether the communication terminal 13 is in the target area 602 for each zone type. When the area flag is 0, it indicates that the communication terminal 13 is not within the target area 602 indicated in the use restriction policy 80, and when the area flag is 1, it indicates that the communication terminal 13 is within the target area. .

  The condition determination unit 60 initializes the zone flag (zone A = 0, zone B = 0, zone C = 0) (S1301). The condition determination unit 60 starts an area determination loop for all the target areas 602 in order to confirm whether the communication terminal 13 exists in the target area 602 of the area included in the received use restriction policy 80 (S1302).

  The condition determination unit 60 determines to which area the area indicated by the area number i included in the use restriction policy 80 belongs (S1303). If the area belongs to section A (S1303: A), the process proceeds to step S1304. When the area belongs to the zone B (S1303: B), the process proceeds to step S1306. If the area belongs to section C (S1303: C), the process proceeds to step S1308.

  When the area belongs to the area A, the condition determination unit 60 determines whether the communication terminal 13 is in the target area 602 of the area A indicated by the use restriction policy 80 (S1304). When the communication terminal 13 is in the target area 602 (S1304: YES), the condition determination unit 60 sets the area flag of the area A to 1 (S1305). When the communication terminal 13 is outside the target area 602 (S1304: NO), the process proceeds to step S1310.

  When the area belongs to the area B in step S1303, the condition determination unit 60 determines whether the communication terminal 13 is in the target area 602 of the area B indicated by the use restriction policy 80 (S1306). When the communication terminal 13 is in the target area 602 (S1306: YES), the condition determination unit 60 rewrites the area flag of the area B to 1 (S1307). When the communication terminal 13 is outside the target area 602 (S1306: NO), the process proceeds to step S1310.

  In step S1303, when the area belongs to the area C, the condition determination unit 60 determines whether the communication terminal 13 is within the target area of the area C indicated by the use restriction policy (S1308). When the communication terminal 13 is in the target area 602 (S1308: NO), the condition determination unit 60 sets the area flag of the area C to 1 (S1309). If the communication terminal 13 is outside the target area 602 (S1308: YES), the process proceeds to step S1310.

  After performing the area determination loop for all areas included in the use restriction policy 80, the condition determination unit 60 ends the area determination loop (S1310). If there is an area in the use restriction policy 80 in which the area zone determination loop is not performed, the condition determination unit 60 performs the processing from step S1303 on the area.

  For example, the condition determination unit 60 determines whether the communication terminal 13 is connected to any of the hospitals even if there are a plurality of hospitals (area A) within a specific distance from the communication terminal 13 by the current area determination process described above. If it is in the area, the area flag of area A is set to 1, so it can be determined that the communication terminal 13 is in the hospital.

  FIG. 11 shows an example of a subroutine showing a condition determination process corresponding to step S1211 of FIG. The condition determination unit 60 checks the current restriction state of the communication terminal 13. When the communication terminal 13 is being released from the restriction, the condition determination unit 60 determines whether or not the communication terminal 13 is in the use restriction area. When the communication terminal 13 is within the restricted area, the condition determination unit 60 confirms the restriction setting conditions in the restricted area. On the other hand, when the restricted state is restricted, the condition determination unit 60 confirms the restriction release condition regardless of whether or not the communication terminal 13 is in the restricted use area, and restricts if the release condition is satisfied. Cancel the release.

  In order for the communication terminal 13 to set the use restriction, it is assumed that the communication terminal 13 is in the use restriction area. However, in order for the communication terminal 13 to cancel the use restriction, it is not necessarily assumed that the communication terminal 13 is outside the restricted area.

  Taking the setting and cancellation of restrictions in the airport as an example, the communication terminal 13 is in the area C (airport) and executes the use restriction when the setting condition of “move at 100 km / h or more” is satisfied. . In addition, for example, when the airplane has landed at another airport after taking off and reduced its speed, the communication terminal 13 is outside the area C and satisfies the release condition of “below 40 km / h”. Cancel the usage restriction.

  However, the communication terminal 13 cancels the use restriction not only when the communication terminal 13 is outside the restricted area. For example, when the airplane tries to take off and moves at a speed of 100 km / h or more, the communication terminal 13 in the airplane executes the use restriction. However, for example, if for some reason thereafter, the airplane is slowed down and stopped in the same airport without taking off, the communication terminal 13 has not left the area C, but the release condition is “40 km per hour” It is judged that “becomes below” is satisfied, and the restriction is released.

  If the release condition is confirmed only when the communication terminal 13 is within the restricted area or outside the restricted area, there is a possibility that the use restriction may not be released. Therefore, as described above, the communication terminal 13 is not limited to whether or not the communication terminal 13 exists in the restricted area. Can be avoided.

  The relationship between the area flag and the restriction flag in this embodiment will be described. The area flag is a flag indicating whether or not the communication terminal 13 is in the target area 602 corresponding to the area type for each area type. The restriction flag is a flag indicating whether or not the communication terminal 13 is setting a use restriction corresponding to the area type. When the restriction flag for a certain use restriction is 1, it indicates that the communication terminal 13 is currently setting the use restriction. When the restriction flag is 0, it indicates that the communication terminal 13 is not setting the use restriction. Show.

  For example, the area flag of the area A being 1 means that the communication terminal 13 was in the target area 602 of the area A at the previous current area determination process (step S1210). In addition, the fact that the area flag of area A is 0 means that the communication terminal 13 was outside the target area 602 of area A during the previous current area determination process (step S1210).

  The restriction flag indicates whether or not the communication terminal 13 is setting a restriction corresponding to each area type. The restriction flag of restriction A being 1 means that the restriction item for area A was being set in the communication terminal 13 during the previous setting state confirmation process (step S1211). The fact that the restriction flag of the restriction A is 0 means that the restriction item for the area A was being released at the time of the previous setting state confirmation process (step S1211). The same applies to the area flags for areas B and C and the restriction flags for restrictions B and C.

  The condition determining unit 60 determines whether the limit flag of the limit A recorded in the state recording unit 59 is 0 or 1 (S1401). When the restriction flag of restriction A is 0 (S1401: 0), the process proceeds to step S1404.

  When the restriction flag of restriction A is 1 (S1401: 1), the condition determination unit 60 determines whether the communication terminal 13 satisfies the restriction A release condition 705 (S1402). If the communication terminal 13 does not satisfy the restriction A release condition 705 (S1402: NO), the process proceeds to step S1407. When the communication terminal 13 satisfies the restriction A release condition 705 (S1402: YES), the condition determination unit 60 sets the restriction flag of restriction A to 0 (S1403).

  If the restriction flag for restriction A is 0 in step S1401, the condition determination unit 60 determines whether the area flag for area A is 0 or 1 (S1404). When the area flag of area A is 0 (S1401: 0), the process proceeds to step S1407. When the area flag of the area A is 1 (S1404: 1), the condition determination unit 60 determines whether the communication terminal 13 satisfies the setting condition of the restriction A (S1405). When the communication terminal 13 does not satisfy the setting condition of the limit A (S1405: NO), the process proceeds to step S1407. When the communication terminal 13 satisfies the setting condition for restriction A (S1405: YES), the condition determination unit 60 sets the restriction flag for restriction A to 1 (S1406).

  Subsequently, the condition determining unit 60 determines whether the limit flag of limit B recorded by the state recording unit 59 is 0 or 1 (S1407). When the restriction flag of restriction B is 0 (S1407: 0), the process proceeds to step S1410.

  When the restriction flag of restriction B is 1 (S1407: 1), the condition determination unit 60 determines whether the communication terminal 13 satisfies the restriction B release condition 705 (S1408). If the communication terminal 13 does not satisfy the restriction B release condition 705 (S1408: NO), the process proceeds to step S1413. When the communication terminal 13 satisfies the restriction B release condition 705 (S1408: YES), the condition determination unit 60 sets the restriction flag of restriction B to 0 (1409).

  If the restriction flag for restriction B is 0 in step S1407 (S1407: 0), the condition determination unit 60 determines whether the area flag for area B is 0 or 1 (S1410). If the area flag of area B is 0 (S1410: 0), the process proceeds to step S1413. When the area flag of the area B is 1 (S1410: 1), the condition determination unit 60 determines whether the communication terminal 13 satisfies the setting condition of the restriction B (S1411). If the communication terminal 13 does not satisfy the setting condition of the limit B (S1411: NO), the process proceeds to step S1412. When the communication terminal 13 satisfies the restriction B release condition 705 (S1411: YES), the condition determination unit 60 sets the restriction flag of restriction B to 1 (S1412).

  Subsequently, the condition determining unit 60 determines whether the limit flag of the limit C recorded by the state recording unit 59 is 0 or 1 (S1413). If the limit flag of limit C is 0 (S1413: 0), the process proceeds to step S1416.

  When the restriction flag of restriction C is 1 (S1413: 1), the condition determination unit 60 determines whether the communication terminal 13 satisfies the condition for releasing restriction C (S1414). If the communication terminal 13 does not satisfy the restriction C release condition (S1414: NO), the process ends. When the communication terminal 13 satisfies the restriction C release condition (S1414: YES), the condition determining unit 60 sets the restriction C restriction flag to 0 (S1415).

  The condition determination unit 60 determines whether the area flag of the area C is 0 or 1 (S1416). If the zone flag of zone C is 0 (S1416: 0), the process is terminated. When the area flag of the area C is 1 (S1416: 1), the condition determination unit 60 determines whether the communication terminal 13 satisfies the setting condition of the limit C (S1417). When the communication terminal 13 does not satisfy the setting condition 704 of the limit C (S1417: NO), the process is terminated. When the communication terminal 13 satisfies the setting condition of restriction C (S1417: YES), the condition determination unit 60 sets the restriction flag of restriction C to 1 (S1418).

  FIG. 12 shows an example of a subroutine indicating restriction setting / cancellation execution processing corresponding to step S1212 of FIG. The use restriction setting / cancellation execution unit 61 performs settings related to the volume and settings related to the power level of the transmission radio wave according to the restriction flags for each restriction determined by the condition determination process in step S1211. For example, when the restriction flag of restriction A is 1, the use restriction setting / cancellation execution unit 61 turns off the volume of the communication terminal 13.

  When the restriction flag of restriction B is 1, the use restriction setting / cancellation execution unit 61 restricts the power level of the transmission radio wave to the level described in the transmission radio wave 703. When the restriction flag of restriction C is 1, the use restriction setting / cancellation execution unit 61 sets transmission power to OFF.

  Note that the limits B and C are settings related to transmission power, and the importance in the limit C where the power level of the transmission radio wave is lower is higher than the importance in the limit B. Therefore, the communication terminal 13 can apply the use restriction in the restriction C by executing the setting of the restriction C after the restriction B. Since the limit A is a setting relating to the volume, the execution order with the limits B and C is not particularly limited.

  For example, the administrator or the like sorts the records of the restriction item / condition table 700 in advance in ascending order of the importance, that is, the execution order of the restriction setting, so that the use restriction setting / cancellation execution unit 61 executes the restriction execution. The order can be determined. Further, the restriction item / condition table 700 may further include a column indicating the order of importance, that is, the execution order of restriction setting. At this time, the use restriction setting / cancellation execution unit 61 includes a column indicating the order of importance. Refer to to determine the order of limited execution.

  By the above-described processing, for example, even when the communication terminal 13 exists in the areas B and C at the same time and satisfies the setting conditions in both areas or satisfies the release condition of only the restriction B, the restriction B Based on the importance of the restriction C, the restriction C having a high importance can be finally executed. In this embodiment, it is assumed that the importance is higher in the order of restriction C, restriction B, and restriction A in accordance with the record order of the restriction item / condition table 700 shown in FIG.

  The use restriction setting / cancellation execution unit 61 turns on the volume setting, and does not restrict the power level of the transmission radio wave, that is, cancels all use restrictions (S1501). The use restriction setting / cancellation execution unit 61 determines whether the restriction flag of restriction A is 0 or 1 (S1502). When the restriction flag of restriction A is 0 (S1501: 0), the process proceeds to step S1504. When the restriction flag of restriction A is 1 (S1501: 1), the use restriction setting / cancellation executing unit 61 turns off the volume setting of the communication terminal 13 (S1503).

  Subsequently, the use restriction setting / cancellation execution unit 61 determines whether the restriction flag of restriction B is 0 or 1 (S1504). When the restriction flag of restriction B is 0 (S1504: 0), the process proceeds to step S1506. When the restriction flag of restriction B is 1 (S1504: 1), the use restriction setting / cancellation execution unit 61 sets the power level of the transmission radio wave of the communication terminal 13 to the level described in the transmission radio wave of the use restriction policy 80. Restrict (S1505).

  Subsequently, the use restriction setting / cancellation executing unit 61 determines whether the restriction flag of restriction C is 0 or 1 (S1506). If the limit flag of limit C is 0 (S1506: 0), the process is terminated. When the restriction flag of restriction C is 1, the use restriction setting / cancellation executing unit 61 turns off the transmission radio wave of the communication terminal 13 (S1507).

  FIG. 13 shows an example of a use restriction policy 80 transmitted from the policy distribution apparatus 12 to the communication terminal 13 and a restricted area in the use restriction policy 80. First, when the policy distribution device 12 receives current location information from the communication terminal 13, the policy distribution device 12 determines a route selection policy and a use restriction policy 80 for the communication terminal 13 based on the received current location information. Send to.

  When it is determined that the communication terminal 13 that has received the use restriction policy 80 has moved and has entered the target area 602 of the area B by the above-described determination method, the communication terminal 13 performs the current area determination processing in step S1210, thereby Record in B. At this time, the communication terminal 13 sets the use restriction indicated in the use restriction policy 80 in order to satisfy “target area entry” which is the setting condition of the area B described in the use restriction policy 80. That is, the communication terminal 13 sets the volume to ON and limits the power level of the transmission radio wave to −30 dBm or less.

  When the communication terminal 13 that is executing the restriction in the area B is 10 m or more away from the area B, the area flag of the area B is set to 0 by performing the current area determination process in step 1210. Further, the communication terminal 13 determines from the acquired current position information that the communication terminal 13 is 10 m or more away from the target area. The communication terminal 13 releases the use restriction in order to satisfy the release condition 705 of “leaving 10 m or more from the target area”.

  FIG. 14 shows an operation example in the communication terminal 13 from receiving the emergency notification to canceling the use restriction. The policy receiver 55 receives an emergency notification from the base station in the mobile network 11 (S1801). The condition determination unit 60 checks whether the transmission radio wave is currently stopped, that is, whether the restriction flag of restriction C is 1 or 0 (S1802). If the transmission radio wave is not stopped (S1802: NO), the process is terminated. When the transmission radio wave is stopped (S1802: YES), the use restriction setting / cancellation executing unit 61 releases the restriction on the transmission radio wave (S1803). The use restriction setting / cancellation executing unit 61 sets the restriction flag of restriction C to 0 (S1804).

  The emergency notification in the present embodiment is transmitted from the base station in the mobile network 11 to the communication terminal 13 as notification information when an emergency such as an earthquake occurs. Limit flags 1 and 0 of limit C mean that transmission power is not limited while transmission power is stopped. The communication terminal 13 stops the transmission radio wave during execution of the restriction C, but does not stop the reception function of the notification information, and therefore can receive the notification information from the base station. Thereby, the communication terminal 13 can receive the emergency notification from the base station even when the transmission radio wave is stopped, and can autonomously cancel the use restriction.

  The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail for better understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.

  Further, the control lines and the information lines are those that are considered necessary for the explanation, and not all the control lines and the information lines that are necessary for the mounting are shown. In practice, it can be considered that almost all the components are connected to each other.

Claims (14)

A policy distribution device that transmits a use restriction policy for restricting a specific function of the communication terminal to a communication terminal,
First information indicating a position of a restricted use area where a specific function of the communication terminal is restricted;
Second information indicating use restriction contents of the communication terminal corresponding to each of the use restriction areas;
A position information receiving unit for acquiring a current position of the first communication terminal;
A use restriction area at least partially included in a predetermined area including the acquired current position of the first communication terminal is selected from the first information, and use restriction contents corresponding to each of the selected use restriction areas are selected. 2 Select from information,
A policy determining unit for determining a use restriction policy including the selected use restriction area and a use restriction content corresponding to each of the selected use restriction area;
A policy distribution device, comprising: a policy distribution unit that transmits the determined use restriction policy to the first communication terminal. The policy distribution device according to claim 1,
In each of the use restriction areas, the communication terminal further includes third information indicating a setting condition for executing the setting according to the use restriction content,
The policy determination unit
A setting condition corresponding to each of the selected restricted use areas is selected from the third information;
A policy distribution device that includes the selected setting condition in the use restriction policy. The policy distribution device according to claim 2,
The policy distribution apparatus, wherein the selected setting condition includes a setting condition based on a moving speed of the first communication terminal. The policy distribution device according to claim 1,
4th information which shows cancellation conditions for canceling use restriction setting in each of the above-mentioned use restriction areas,
The policy determination unit
A cancellation condition corresponding to each of the selected restricted use areas is selected from the fourth information;
A policy distribution device that includes the selected release condition in the use restriction policy. The policy distribution device according to claim 1,
5th information which shows the execution order of a plurality of restriction items in the above-mentioned use restriction contents,
The policy determination unit
Selecting execution order information corresponding to each of the selected restricted use areas from the fifth information;
A policy distribution device that includes the selected execution order information in the use restriction policy. The policy distribution device according to any one of claims 1 to 5,
The policy distribution device, wherein the use restriction content indicated by the second information includes at least one of restriction of a transmission radio wave and a ringing volume. The policy distribution device according to any one of claims 1 to 5,
The use restriction content indicated by the second information is a policy distribution device including limiting transmission power of a transmission radio wave to less than a predetermined value. A communication terminal that restricts certain functions based on the current location,
A position information transmission unit that transmits first position information indicating a current position of the communication terminal to the policy distribution device;
From the policy distribution device, a use restriction area at least partially included in a predetermined area including the position indicated by the first position information, and use restriction contents of the function of the communication terminal corresponding to each of the use restriction areas, Including a usage restriction policy, a policy receiver for receiving,
A policy storage unit for storing the received use restriction policy;
A position information acquisition unit for acquiring a current position of the communication terminal;
Whether or not to execute the setting according to the use restriction content corresponding to the first use restriction area based on whether or not the acquired current position is contained in the first use restriction area included in the stored use restriction policy A condition determination unit for determining whether or not
A communication terminal including: a use restriction setting execution unit that executes the setting based on a determination result by the condition determination unit. The communication terminal according to claim 8, wherein
The received use restriction policy further includes a setting condition for the communication terminal to execute setting according to the use restriction content in each of the use restriction areas.
The condition determination unit corresponds to the first use restriction area when the acquired current position is included in the first use restriction area and the communication terminal satisfies a setting condition corresponding to the first use restriction area. A communication terminal that determines to execute the setting according to the use restriction content. The communication terminal according to claim 8, wherein
The received use restriction policy further includes a release condition for releasing the use restriction setting in each use restriction area,
The condition determination unit determines to cancel the use restriction setting being executed when the release condition corresponding to the use restriction setting being executed by the communication terminal is satisfied,
The use restriction setting execution unit is a communication terminal that cancels the use restriction setting being executed based on a determination result by the condition determination unit. The communication terminal according to claim 8, wherein
The received use restriction policy further includes information indicating an execution order of a plurality of restriction items in the use restriction content,
The use restriction setting execution unit, when it is determined that the condition determination unit executes the setting according to the use restriction content corresponding to each of the plurality of use restriction areas, according to the execution order corresponding to each of the plurality of use restriction areas. A communication terminal that executes setting according to the content of use restriction corresponding to each of the plurality of use restriction areas. The communication terminal according to claim 8, wherein
The condition determination unit refers to the stored use restriction policy in the first area included in the predetermined area,
After the communication terminal moves outside the first area, the location information transmission unit transmits new location information indicating a current location to the policy distribution device,
The policy receiving unit receives a new usage restriction policy corresponding to the new location information from the policy distribution device,
The condition determination unit is a communication terminal that refers to the new usage restriction policy. The communication terminal according to claim 8, wherein
The use restriction content included in the received use restriction policy includes transmission radio wave restriction,
The condition determination unit determines to release the restriction on the transmission radio wave being executed when the policy reception unit receives notification information including an emergency notification and the communication terminal is executing the restriction on the transmission radio wave. , Communication terminal. The policy distribution device is a method for transmitting a use restriction policy for restricting a specific function of the communication terminal to the communication terminal,
The policy distribution apparatus includes: first information indicating a position of a use restriction area where a specific function of the communication terminal is restricted; and second information indicating a use restriction content of the communication terminal corresponding to each of the use restriction areas. Hold and
The method
A procedure for acquiring the current position of the first communication terminal;
A use restriction area at least partially included in a predetermined area including the acquired current position of the first communication terminal is selected from the first information, and use restriction contents corresponding to each of the selected use restriction areas are selected. 2 steps to select from information,
Determining a use restriction policy including the selected use restriction area and use restriction content corresponding to each of the selected use restriction area;
Transmitting the determined use restriction policy to the first communication terminal.

Images