JP2010258906A - Communication terminal device, server apparatus, and, program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication terminal device, server apparatus and program, wherein information relating to a current position is obtained appropriately. <P>SOLUTION: Only a predetermined mobile terminal 10 (specific terminal) in a group obtains current position information from a GPS satellite 30 and transmits the obtained information to a base station 20. On the base station 20 side, it is then discriminated that mobile terminals 10 included in the same group are located at the same position. The specific terminal is switched in a predetermined timing. Namely, the current position information is obtained and transmitted to the base station 20 in a handed-round manner. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a communication terminal device, a server device, and a program.

  Communication terminals such as mobile phones in recent years can acquire current position information, and information related to the current position can be received by notifying a business operator or the like of the acquired position information. In particular, emergency information or disaster information can be received.

  A technique is also disclosed in which a plurality of communication terminals are grouped and managed in advance, and emergency information is notified to the communication terminals of the group in the corresponding area (for example, Patent Document 1).

JP 2005-284825 A

  However, the technique of Patent Document 1 has a problem that it is difficult to acquire information when information is acquired for each communication terminal to increase traffic or when the remaining battery level of the communication terminal is low.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a communication terminal device, a server device, and a program that can suitably acquire information related to the current position.

In order to achieve the above object, a communication terminal device according to the first aspect of the present invention provides:
Short-range communication means for performing wireless communication with other communication terminal devices;
Group registration means for registering a plurality of communication terminal devices including the self as a group to the server;
Position acquisition means for acquiring the current position,
Position information transmitting means for performing current position transmission for transmitting information on the current position acquired by the position acquiring means to the server;
Information receiving means for receiving, from the server, information related to the information on the current position transmitted by the position information transmitting means;
Control means for controlling the communication terminal apparatus that performs the current position acquisition by the position acquisition means and the current position transmission by the position information transmission means to another communication terminal apparatus included in the group. When,
It is characterized by providing.

Further comprising battery remaining amount information acquisition means for acquiring battery remaining amount information of a plurality of communication terminal devices included in the group;
The control unit may be configured to determine a communication terminal that performs the current position acquisition and the current position transmission based on the information on the remaining battery level acquired by the remaining battery level information acquiring unit.

  The group registration unit may be configured to add the communication terminal device to the group when communication with the communication terminal device registered in advance is possible by the short-range communication unit.

  The group registering unit is a communication terminal device that can communicate indirectly with another communication terminal device even when the short-distance communication unit cannot directly communicate with the communication terminal device registered in advance. It may be configured to add to the group.

  The group registration unit may be configured to remove the communication terminal device from the group when communication with the communication terminal device included in the group becomes impossible by the short-range communication unit.

  The group registration unit may be configured to remove itself from the group when communication with a communication terminal device included in the group becomes impossible by the short-range communication unit.

A motion detection means for detecting its own motion;
When the operation is not detected by the operation detection unit, the short-distance communication unit may search for another communication terminal device, and may further include a participation unit that joins the group.

  When there is a change in the communication terminal device registered by the group registration unit, a change receiving unit that receives a notification to that effect may be further provided.

  It may be configured to further include cancellation means for canceling group registration by the group registration means.

A server device according to a second aspect of the present invention provides:
A group registration means for registering a plurality of communication terminal devices provided with information receiving means for receiving predetermined information as a group;
Position information receiving means for receiving position information from the communication terminal device;
Information transmitting means for transmitting predetermined information to the communication terminal device based on the position information received by the position information receiving means and the group information;
It is characterized by providing.

The program according to the third aspect of the present invention is:
Computer
Near field communication means for performing wireless communication with other communication terminal devices;
Group registration means for registering a plurality of communication terminal devices as a group in a server;
Position acquisition means for acquiring the current position,
Position information transmission means for performing current position transmission for transmitting information on the current position acquired by the position acquisition means to the server;
Information receiving means for receiving information related to the current position information transmitted by the position information transmitting means from the server;
Control means for controlling the communication terminal apparatus that performs the current position acquisition by the position acquisition means and the current position transmission by the position information transmission means to another communication terminal apparatus included in the group. ,
It is made to function as.

The program according to the fourth aspect of the present invention is:
Computer
Group registration means for registering a plurality of communication terminal devices as a group with information receiving means for receiving predetermined information;
Position information receiving means for receiving position information from the communication terminal device;
Information transmitting means for transmitting predetermined information to the communication terminal device based on the position information received by the position information receiving means and the group information;
It is made to function as.

  ADVANTAGE OF THE INVENTION According to this invention, the power saving of a communication terminal device can be achieved, reducing the traffic at the time of acquiring the information relevant to a present position.

It is a functional block diagram of the portable terminal which concerns on embodiment of this invention. It is a functional block diagram of the base station which communicates with a portable terminal. It is a figure for demonstrating the operational environment of this invention. It is a figure which shows group registration information and terminal location information. It is a flowchart which shows operation | movement of a group management start process. It is a flowchart which shows the operation | movement of a positioning start event process. It is a flowchart which shows operation | movement of a terminal selection process. It is a flowchart which shows operation | movement of a battery remaining charge inquiry event process. It is a flowchart which shows operation | movement of a timer event process. It is a flowchart which shows operation | movement of a terminal reselection process. It is a flowchart which shows operation | movement of a server event process. It is a flowchart which shows operation | movement of an alarm notification process. It is a flowchart which shows operation | movement of a location update process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings and flowcharts. In addition, embodiment of this invention is not limited to the following Example, As long as it exists in the range of this invention, you may employ | adopt various forms.

  FIG. 1 is a functional block diagram of a mobile terminal 10 as a communication terminal device of the present invention. The mobile terminal 10 includes a control unit 11, a display unit 12, an operation unit 13, an acceleration sensor 14, a power supply control unit 15, a GPS positioning unit 16, a base station communication unit 17, and a wireless LAN communication unit 18. And an audio processing unit 19.

  The control unit 11 includes a CPU (Central Processing Unit), a ROM (Read Only Memory) storing an operation program, a RAM (Random Access Memory) serving as a work area, and the like, and controls the entire mobile terminal 10. The control unit 11 has a built-in timer 111 that generates an interrupt at a predetermined time. Further, an area (group registration memory 112) for storing registration information of the group of the mobile terminals 10 is secured in the RAM.

  The display unit 12 includes an LCD (Liquid Crystal Display) and the like, and displays various screens under the control of the control unit 11.

  The operation unit 13 receives an operation from the user and inputs a signal corresponding to the operation to the control unit 11.

  The acceleration sensor 14 detects the movement (acceleration) of the portable terminal 10 and notifies the control unit 11 when the movement is detected.

  The power control unit 15 includes a battery and supplies power to each unit of the mobile terminal 10. In response to a request from the control unit 11, the power supply control unit 15 supplies battery remaining amount information indicating the remaining amount of the battery.

  A GPS (Global Positioning System) positioning unit 16 receives a signal from a GPS satellite and measures the current position of the mobile terminal 10.

  The base station communication unit 17 communicates with a base station 20 to be described later and transmits / receives voice data of a call. In addition, the base station communication unit 17 performs data communication with the base station 20 regarding access to a website, electronic mail, and the like.

  A wireless local area network (LAN) communication unit 18 communicates with peripheral devices using a wireless LAN. The wireless LAN communication unit 18 not only communicates with a specific access point but also has an ad hoc communication function for directly communicating with other communication terminal devices. The wireless LAN communication unit 18 operates with much smaller power than the power for operating the GPS positioning unit 16 and the base station communication unit 17.

  The voice processing unit 19 processes voice related to the calling function of the mobile terminal 10. The voice processing unit 19 receives voice input from the microphone 192, and sends the digitally converted voice signal to the base station communication unit 17 under the control of the control unit 11. In addition, under the control of the control unit 11, the digital audio signal is input from the base station communication unit 17, converted into an analog signal, and output from the speaker 191.

  FIG. 2 is a functional block diagram of the base station 20 as a server device of the present invention that communicates with the mobile terminal 10. As shown in FIG. 2, the base station 20 is provided with a base station server 21. The base station server 21 is a computer composed of a CPU and a storage device. The base station server 21 is connected to a wireless communication unit 22, an Internet line connection device 23, and a telephone line connection device 24.

  The wireless communication unit 22 mediates communication between the mobile terminal 10 and the base station server 21. The wireless communication unit 22 sends the data received from the base station communication unit 17 of the mobile terminal 10 to the base station server 21. In addition, the wireless communication unit 22 transmits data input from the base station server 21 to the base station communication unit 17.

  The Internet line connection device 23 is a device for connecting the base station server 21 to the Internet line. The communication line connection device 24 is a device for connecting the base station server 21 to a communication line.

  The base station server 21 controls calls and data communication of the mobile terminal 10. In addition, the base station server 21 can acquire regional information such as alarms and warnings from the Internet line, and can transmit the information to the mobile terminal 10.

  The base station server 21 includes a group information storage unit 211 that stores registration information of a group of mobile terminals 10 and a terminal location storage unit 212 that stores position information transmitted from the mobile terminal 10. Based on these pieces of information, the base station server 21 can transmit regional information such as warnings and warnings to the mobile terminals 10 registered in the group.

  FIG. 3 is a diagram for explaining the operational environment of the present invention. In this embodiment, a plurality of mobile terminals 10 are registered in the mobile terminal 10 and the base station server 21 as a group. FIG. 3 shows a group A composed of portable terminals 10a, 10b, and 10c and a group B composed of portable terminals 10d and 10e. Communication is performed between the mobile terminals 10 included in this group by a wireless LAN. Therefore, the group is a set of portable terminals 10 owned by users who act at a relatively close distance such as at work or school. Members of the mobile terminals 10 belonging to the group may be determined in advance, or a group may be automatically generated when another mobile terminal 10 is detected. Hereinafter, an example in which the members of the mobile terminals 10 belonging to the group are determined in advance will be described.

  By holding the current position information of each mobile terminal 10 on the base station 20 side, information (for example, information such as an alarm or a warning) according to the current position information can be transmitted to each mobile terminal 10. . In order to obtain the current position information of each mobile terminal 10 on the base station 20 side, each mobile terminal 10 receives a signal from the GPS satellite 30, measures the current position, and transmits the measured current position to the base station 20. There was a need to do. However, since communication with the GPS satellite 30 and the base station 20 consumes a large amount of power, this operation cannot be performed very frequently.

  In this embodiment, only a predetermined mobile terminal 10 (specific terminal) in the group acquires the current position information and transmits it to the base station 20. On the base station 20 side, the mobile terminals 10 included in the same group are determined to be at the same position. The specific terminal is switched at a predetermined timing. That is, acquisition of the current position information and transmission of the current position information to the base station 20 are carried around. By doing in this way, the power consumption of the portable terminal 10 which belongs to a group can be suppressed.

  FIG. 4A is a diagram illustrating group registration information stored in the group registration memory 112 of the mobile terminal 10. The group registration information includes a list of telephone numbers for identifying the mobile terminals 10 belonging to the group, a value indicating the remaining battery level of the mobile terminal 10, and whether the mobile terminal 10 is currently participating in the group. Is a piece of information associated with a participation flag. The mobile terminals 10 belonging to the same group hold the same group registration information.

  FIG. 4B is a diagram illustrating group registration information stored in the group information storage unit 211 of the base station server 21. The group registration information of the base station server 21 is information in which a list of telephone numbers of the mobile terminals 10 belonging to the group and a participation flag are associated with each other. The base station server 21 does not use the battery remaining amount information and does not hold it. The group information storage unit 211 stores a plurality of group registration information corresponding to the number of groups. Group registration information is transmitted from the mobile terminals 10 belonging to each group.

  FIG. 4C shows terminal location information stored in the terminal location storage unit 212 of the base station server 21. The terminal location information is information in which a list of telephone numbers for identifying the mobile terminal 10 and information on the location (current position) of the mobile terminal 10 are associated with each other. The mobile terminals 10 belonging to the same group have the same location. When receiving the current position information from the specific terminal, the base station server 21 determines the group to which the specific terminal belongs, and updates the locations of all the mobile terminals 10 included in the group with the same current position information.

  Next, the operation of the present invention will be described. When joining the group, the control unit 11 of the portable terminal 10 executes a group management start process shown in FIG. First, the control unit 11 updates group registration information stored in the group registration memory 112 (step S101). Here, the participation flag of the mobile terminal 10 is set and the remaining battery level is stored. Moreover, the participation flag of the other portable terminal 10 which can communicate by wireless LAN is set, and the battery remaining charge of the other portable terminal 10 is memorize | stored. When joining a group, the user can designate a group to join and its members.

  Next, the control unit 11 performs various initialization processes (step S102). For example, an interval for measuring the current position (positioning interval) is stored in a predetermined area of the RAM, and a cumulative error value used for selecting a specific terminal is initialized. The positioning interval may be input by the user. In this embodiment, the mobile terminal 10 that has acquired the current position information and transmitted the current position information to the base station 20 next time acquires the current position information and transmits the current position information to the base station 20. The mobile terminal 10 is selected from other mobile terminals 10 belonging to the same group. This selection is performed based on the remaining battery level of the other mobile terminal 10. A method of simply selecting the portable terminal 10 having a relatively large remaining battery level is also conceivable, but in this embodiment, the selection is performed using an error diffusion calculation used for image processing. The cumulative error value is a numerical value used in the calculation.

  Thereafter, the control unit 11 enters an event waiting state (step S103). When the end event is detected (step S104; Yes), the control unit 11 ends the process. When another event is detected (step S104; No), the control unit 11 executes various event processes (step S105) corresponding to the detected event.

  FIG. 6 is a flowchart showing an operation of a positioning start event process that is executed when the control unit 11 detects a positioning start event while waiting for an event. The positioning start event is issued from another mobile terminal 10 or the base station server 21. In the positioning start event process, the control unit 11 first executes a GPS positioning process in which the current position is measured by the GPS positioning unit 16 (step S111).

  Subsequently, the control unit 11 notifies the acquired current position information to the base station server 21 (step S112). And the control part 11 sets the predetermined positioning interval to the timer 111 (step S113). A timer event for acquiring the current position occurs at every positioning interval set here.

  Next, the control part 11 acquires battery remaining amount information from the power supply control part 15, and updates the own battery remaining amount information in group registration information (step S114).

  And the control part 11 performs the terminal selection process for selecting the portable terminal 10 which performs positioning of a present position next (step S115), and complete | finishes a positioning start event process.

  Here, an outline of an operation of selecting the mobile terminal 10 that performs positioning of the current position will be described. As described above, the operation of measuring the current position and notifying the current position to the base station server 21 (steps S111 and S112) consumes a large amount of power. . Next, the selection of the specific terminal that performs positioning is performed based on the battery remaining amount information of the group registration information. In this embodiment, a specific terminal is selected using an error diffusion calculation used for image processing.

  FIG. 7 is a flowchart showing the operation of the terminal selection process executed in step S115 of FIG. In the terminal selection process, first, the control unit 11 refers to the accumulated error value notified from the mobile terminal 10 that was the specific terminal before (step S201). Here, a case where there is no mobile terminal 10 that was a specific terminal before will be described. In that case, the accumulated error value becomes zero.

  Subsequently, the control unit 11 refers to the participation flag of the next mobile terminal 10 in the group registration information (step S202). And the control part 11 discriminate | determines whether the participation flag of the portable terminal 10 is ON (1) (step S203).

  If the participation flag is on (step S203; Yes), the control unit 11 refers to the remaining battery level of the mobile terminal 10 (step S204), and is the predetermined minimum remaining level (for example, 60) or more? It is determined whether or not (step S205). If it is less than the minimum remaining amount (step S205; No), the portable terminal 10 is not a specific terminal, and the process returns to step S202 to move to selection of the next portable terminal 10.

  If the remaining battery level is equal to or higher than the minimum remaining battery level (step S205; Yes), the control unit 11 adds the remaining battery level referenced in step S204 to the accumulated error value (step S206).

  Then, the control unit 11 determines whether or not the accumulated error value is equal to or greater than a predetermined value (for example, 200) (step S207). If the accumulated error value is greater than or equal to a certain value (step S207; Yes), the control unit 11 determines the portable terminal 10 that refers to the remaining battery level in step S204 as a specific terminal (step S208), and selects a terminal. Finish the process. If the accumulated error value is less than a certain value (step S207; No), the process returns to step S202, and the next mobile terminal 10 is selected.

  In step S203, when it is determined that the participation flag of the next mobile terminal 10 is off (0) (step S203; No), the control unit 11 inquires about the remaining battery level of the mobile terminal 10 (step S209). .

  If there is a response to the inquiry about the remaining battery level (step S210; Yes), the remaining battery level of the mobile terminal 10 is registered in the group registration information, and the participation flag is set on (step S211). Then, the process proceeds to step S206. If there is no response to the inquiry about the remaining battery level (step S210; No), the process returns to step S202, and the next mobile terminal 10 is selected.

  Here, a specific example of selecting a specific terminal will be described using the group registration information shown in FIG. If the own terminal is the mobile terminal 10 having the telephone number 0001 and the accumulated error value is 0, the battery level of the next mobile terminal 10 (phone number 0002) is 120, so the accumulated error value is determined in step S206. 120, which is less than the predetermined value (200) (step S207; No), the remaining battery level of the next portable terminal 10 (0003) is referred to (step S202). Then, in step S206, the accumulated error value becomes 340, which is equal to or greater than a certain value (step S207; Yes), and thus the mobile terminal 10 (0003) is determined as the specific terminal.

  If the terminal is the portable terminal 10 with the telephone number 0003 and the accumulated error value is 20, the remaining battery level of the next portable terminal 10 (0004) is 50, so the remaining battery level is less than the minimum remaining level. (Step S205; No), the remaining battery level of the next portable terminal 10 (0005) is referred to (step S202). Since the participation flag of the next portable terminal 10 (0005) is off, if there is no response to the inquiry about the remaining battery level (step S210; No), the remaining battery level of the next portable terminal 10 (0006) is referred to ( Step S202). In step S206, the accumulated error value becomes 200, which is equal to or greater than a certain value (step S207; Yes), and the mobile terminal 10 (0006) is determined as the specific terminal. As described above, an appropriate specific terminal can be selected based on the battery remaining amount information.

  FIG. 8 is a flowchart showing the operation of the battery remaining amount inquiry event process that is executed when the control unit 11 detects a remaining battery amount inquiry event while waiting for an event. The battery remaining amount inquiry event occurs when the process of step S209 in FIG. 7 is executed. In the battery remaining amount inquiry event process, the control unit 11 acquires battery remaining amount information from the power supply control unit 15 (step S121), and notifies the portable terminal 10 that has made the inquiry of the remaining battery amount (step S122). Thereafter, the control unit 11 finishes the battery remaining amount inquiry event process.

  When the timer 111 measures the positioning interval set in step S113 in FIG. 6, a timer event for repositioning the current position occurs. FIG. 9 is a flowchart showing an operation of timer event processing executed when the control unit 11 detects a timer event while waiting for an event. In the timer event process, the control unit 11 first connects to the mobile terminal 10 determined in step S208 of FIG. 7 via a wireless LAN (step S131).

  If the connection can be made (step S132; Yes), the control unit 11 transmits the accumulated error value and the group registration information to the mobile terminal 10 (step S134), and the timer event process ends.

  If the connection cannot be established (step S132; No), the control unit 11 executes terminal reselection processing for selecting a specific terminal again (step S133), and returns to step S131.

  FIG. 10 is a flowchart showing the operation of the terminal reselection process executed in step S133 of FIG. In the terminal reselection process, first, the control unit 11 refers to the telephone number of the next mobile terminal 10 in the group registration information (step S221). And the control part 11 discriminate | determines whether the telephone number is a telephone number of an own terminal (step S222). In step S132 of FIG. 9, when the mobile terminal 10 that becomes the specific terminal cannot be connected next, the mobile terminal 10 that becomes the specific terminal next comes out of the group, and the case where the own terminal goes out of the group Is assumed. Here, if the next mobile terminal 10 is the telephone number of the own terminal, it is determined that only the own terminal is registered in the group registration information held by the own terminal.

  When the telephone number of the next mobile terminal 10 in the group registration information is not the terminal itself (step S222; No), the mobile terminal 10 that is the next specific terminal is out of the group. In this case, the control unit 11 updates the accumulated error value (step S223). Here, a constant value (for example, 200) used in the determination in step S207 is added from the accumulated error value, and the remaining battery level of the mobile terminal 10 that should have been the specific terminal next is subtracted therefrom. Then, the terminal selection process shown in FIG. 7 is executed again (step S224).

  When a specific terminal is selected again in step S224, the control unit 11 checks whether or not a wireless LAN connection can be established with the mobile terminal 10 serving as the specific terminal (step S225).

  If the mobile terminal 10 cannot be connected (step S226; No), the process returns to step S221 to reselect the specific terminal.

  If it can connect to the portable terminal 10 (step S226; Yes), the control part 11 will determine the portable terminal 10 as the next specific terminal (step S227).

  Then, the control part 11 performs the confirmation process of the portable terminal 10 (member) registered into group registration information by wireless LAN (step S228). In this confirmation process, the mobile terminal 10 that can be directly connected from the mobile terminal 10 that executes this process not only determines that it is a member participating in the group, but also from other mobile terminals 10 that participate in the group. It is determined that the connected mobile terminal 10 is also a member. In a wireless LAN, connection may not be possible due to the presence of an obstacle even at a communicable distance. Therefore, a method of sequentially confirming connections in the order registered in the group registration information, a method of confirming connections by skipping one by one in the order registered in the group registration information, and traveling around routes that can be connected from the respective mobile terminals 10 You can confirm your participation by a method of confirming them or a combination of these. Further, it is determined that the mobile terminal 10 that cannot be connected by any method does not participate in the group. By doing in this way, it is possible to automatically make the members of the group participate, and appropriate group management can be performed even if the number of groups increases.

  When the member confirmation processing ends in step S228, the control unit 11 updates the participation flag of the group registration information based on the result (step S229), and notifies the updated group registration information to the base station server 21 ( Step S230), terminal reselection processing is completed.

  When the telephone number of the next portable terminal 10 in the group registration information is the own terminal in step S222 (step S222; Yes), the own terminal is out of the group. In this case, the control unit 11 notifies the base station server 21 that it has left the group (step S231). Then, a request for acting to issue a positioning start event is transmitted to the base station server 21 (step S232).

  Thereafter, the control unit 11 displays a screen for inputting whether or not to return to the group on the display unit 12, and waits for a user operation (step S233). When it is input that the user does not return to the group (step S234; Yes), the control unit 11 issues an end event (step S235) and ends the terminal reselection process. By doing so, it is possible to reliably leave the group registration, and it is possible to suppress wasteful power consumption.

  Further, when it is not input that the information does not return to the group (step S234; No), the terminal reselection process is terminated. In this case, the mobile terminal 10 enters an event waiting state.

  Next, the operation on the base station server 21 side will be described. When the CPU of the base station server 21 detects an event from the mobile terminal 10 or the Internet, the CPU executes the server event process shown in FIG. First, the CPU acquires the contents of the event (step S301). Then, the CPU determines whether or not the event is an alarm occurrence event (step S302). An alarm occurrence event occurs when information about an alarm or warning about a disaster such as an earthquake is received from the Internet. This information includes the contents of the warning and warning information and information about the area where the warning and warning are issued.

  If it is an alarm occurrence event (step S302; Yes), the CPU executes an alarm notification process (step S303) and ends the server event process. If it is not an alarm occurrence event (step S302; No), the CPU executes other processing corresponding to the event (step S304) and ends the server event processing.

  FIG. 12 is a flowchart showing the operation of the alarm notification process executed in step S303 of FIG. In the alarm notification process, the CPU first identifies an area where an alarm (or warning) received from the Internet has occurred (step S311).

  Next, the CPU substitutes an initial value for a user ID for searching for a user of the mobile terminal 10 registered in the base station server 21 (step S312).

  Subsequently, the CPU refers to the terminal location information shown in FIG. 4C and specifies the current position of the mobile terminal 10 corresponding to the user ID (step S313).

  Then, the CPU determines whether or not the current position of the identified mobile terminal 10 matches the area where the alarm is generated (step S314). If the current position matches (step S314; Yes), the CPU 10 sends alarm information to the mobile terminal 10. Is transmitted (step S315).

  Thereafter, the CPU switches the user ID to the next user (step S316), and repeats the processes of steps S313 to S316 until the determination is completed for all users (step S317; No).

  FIG. 13 is a flowchart showing the operation of the location update process included in the other processes in step S304 of FIG. When the current position information is notified to the base station server 21 by executing the process of step S112 in FIG. 6 from the mobile terminal 10, the CPU executes a location update process. In the location update process, the CPU acquires the current position information received from the mobile terminal 10 (step S321), and refers to the group registration information stored in the group information storage unit 211 (step S322).

  Then, the CPU updates the current position (terminal location information) of all the mobile terminals 10 belonging to the group to which the mobile terminal 10 that has notified the current position information belongs with the current position information acquired in step S321 (step S323). Finish the location update process. As described above, since the terminal location information of the mobile terminals 10 belonging to the group is collectively updated, the number of times that the mobile terminals 10 belonging to the group connect to the base station server 21 can be reduced, and the mobile terminal apparatus belonging to the group The power consumption of the entire 10 can be suppressed, and the traffic can be reduced.

  11 includes group information when group registration information (particularly, information on participation or withdrawal) is received from the mobile terminal 10 (for example, when step S230 in FIG. 10 is executed). A process of updating the group registration information stored in the storage unit 211 is also included. Furthermore, in the other processing of step S304 in FIG. 11, when a request for issuing a positioning start event is received from the mobile terminal 10 (when step S232 in FIG. 10 is executed), positioning is performed by the specific terminal. Also included is processing to send a start request.

  As described above, in the mobile terminal 10 according to the embodiment of the present invention, the current position information is acquired only by the specific terminal included in the group and notified to the base station server 21. In the base station server 21, the mobile terminals 10 in the same group register the same current position information. Thereby, the power saving of the portable terminal 10 can be achieved while reducing traffic.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation and application are possible. In the above embodiment, the mobile terminal 10 belonging to the group is detected and confirmed in step S209 in FIG. 7 and step S228 in FIG. 10, but the mobile terminal 10 that joins the group joins the group. You may make it notify that it does. For example, if no motion is detected by the acceleration sensor 14 for a predetermined time, it may be determined that the vehicle has arrived at a school or a workplace, and the control unit 11 may notify the group participation. By doing so, it is possible to automatically join the group.

  Further, the number of groups to which each mobile terminal 10 belongs is not limited to one, and may be plural. In this case, the mobile terminal 10 may hold a plurality of group registration information. If the place where each group is formed is determined, it may be automatically determined from the current position information which group registration information is used.

  Although the selection of the specific terminal is performed by the terminal selection process shown in FIG. 7, the mobile terminal 10 having the largest remaining battery level in the group is determined as the specific terminal, or the specific terminal is determined in the order of the remaining battery level. You may make it easy.

  Note that information on joining and leaving of members belonging to a group may be managed by a specific mobile terminal 10. For example, when notifying the base station server 21 of the member joining / leaving information, the base station server 21 may notify the specific mobile terminal 10 of the information. For example, it is assumed that a member is formed by the mobile terminal 10 of a student participating in a school trip, and the member's mobile terminal 10 is notified of information on joining and leaving the member. By doing in this way, the action of the member of a group can be grasped | ascertained with the specific portable terminal 10. FIG.

  Moreover, in the said embodiment, the program which the control part 11 performs was demonstrated as what is stored beforehand. This program may be stored in a storage area provided in the control unit 11 via an external storage medium or a communication network.

DESCRIPTION OF SYMBOLS 10 ... Portable terminal, 11 ... Control part, 12 ... Display part, 13 ... Operation part, 14 ... Acceleration sensor, 15 ... Power supply control part, 16 ... GPS positioning part, 17 ... Base station communication part, 18 ... Wireless LAN communication part , 19 ... Voice processing unit, 20 ... Base station, 21 ... Base station server, 22 ... Wireless communication unit, 23 ... Internet line connection device, 24 ... Communication line connection device, 30 ... GPS satellite

Claims (12)

Short-range communication means for performing wireless communication with other communication terminal devices;
Group registration means for registering a plurality of communication terminal devices including the self as a group to the server;
Position acquisition means for acquiring the current position,
Position information transmitting means for performing current position transmission for transmitting information on the current position acquired by the position acquiring means to the server;
Information receiving means for receiving, from the server, information related to the information on the current position transmitted by the position information transmitting means;
Control means for controlling the communication terminal apparatus that performs the current position acquisition by the position acquisition means and the current position transmission by the position information transmission means to another communication terminal apparatus included in the group. When,
A communication terminal device comprising: Further comprising battery remaining amount information acquisition means for acquiring battery remaining amount information of a plurality of communication terminal devices included in the group;
The control unit determines a communication terminal for performing the current position acquisition and the current position transmission based on the information on the remaining battery level acquired by the remaining battery level information acquiring unit. The communication terminal device described. The said group registration means adds this communication terminal device to the said group, when communication is possible with the communication terminal device registered beforehand by the said short-range communication means. Communication terminal device. The group registration unit is a communication terminal device that can communicate indirectly with another communication terminal device even when the communication device cannot be directly communicated with the communication terminal device registered in advance by the short-range communication unit. The communication terminal device according to claim 1, wherein the communication terminal device is added to the group. The said group registration means removes this communication terminal device from the said group, when communication with the communication terminal device contained in the said group becomes impossible by the said short-distance communication means. The communication terminal device according to any one of claims. The group registration means removes itself from the group when communication with a communication terminal device included in the group becomes impossible by the short-range communication means. The communication terminal device according to item. A motion detection means for detecting its own motion;
7. A participation means for searching for another communication terminal device by the short-range communication means and joining the group when no action is detected by the action detection means. The communication terminal device according to claim 1. The communication according to any one of claims 1 to 7, further comprising a change receiving unit that receives a notification to that effect when there is a change in the communication terminal device registered by the group registration unit. Terminal device. The communication terminal apparatus according to any one of claims 1 to 8, further comprising cancellation means for canceling group registration by the group registration means. A group registration means for registering a plurality of communication terminal devices provided with information receiving means for receiving predetermined information as a group;
Position information receiving means for receiving position information from the communication terminal device;
Information transmitting means for transmitting predetermined information to the communication terminal device based on the position information received by the position information receiving means and the group information;
A server device comprising: Computer
Near field communication means for performing wireless communication with other communication terminal devices;
Group registration means for registering a plurality of communication terminal devices as a group in a server;
Position acquisition means for acquiring the current position,
Position information transmission means for performing current position transmission for transmitting information on the current position acquired by the position acquisition means to the server;
Information receiving means for receiving information related to the current position information transmitted by the position information transmitting means from the server;
Control means for controlling the communication terminal apparatus that performs the current position acquisition by the position acquisition means and the current position transmission by the position information transmission means to another communication terminal apparatus included in the group. ,
A program characterized by functioning as Computer
Group registration means for registering a plurality of communication terminal devices as a group with information receiving means for receiving predetermined information;
Position information receiving means for receiving position information from the communication terminal device;
Information transmitting means for transmitting predetermined information to the communication terminal device based on the position information received by the position information receiving means and the group information;
A program characterized by functioning as

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