WO2015145952A1 - Terminal, communication system, data sharing method, and recording medium for storing program - Google Patents

Abstract

　In order to reduce the time required for the sharing of data and raise the rate of executing the sharing of data between terminals in a delay/disruption tolerant network (DTN), this terminal is characterized in being provided with a storage means for storing first data, a control means for acquiring position information indicating the positions of the terminal and an other terminal and information pertaining to second data that the other terminal stores, and a communication means for transmitting/receiving the first and second data by inter-terminal communication that connects the terminal and other terminal directly, the control means notifying the other terminal of a movement request for requesting the movement of the other terminal on the basis of the position information about the terminal and other terminal and the information pertaining to the first and second data.

Description

Terminal, communication system, data sharing method, and recording medium for storing program

The present invention relates to a communication device, a communication method, and a recording medium for storing a program.

Mobile terminals such as notebook computers, smartphones, and tablet terminals are widespread. The mobile terminal has a wireless communication interface, and enables data communication with other mobile terminals via a mobile phone network, a wireless LAN (Local Area Network) access point, and the like. In recent years, ad hoc communication in which terminals are directly connected by wireless communication without relaying a mobile phone network, an access point, or the like has been used.

As a technology for sharing information between terminals connected by such ad hoc communication, there is DTN (Delay / Disruption Tolerant Network) described in Patent Document 1. In normal data communication, a communication path from a transmission source to a transmission destination needs to be in a connected state at the time of data communication. However, in DTN, data can be transmitted even if the communication path between terminals is not always connected. In the DTN, even if a communication path is not established, data is transferred to a communicable terminal, and the data is temporarily stored in the terminal. Then, the terminal resumes data transfer when communication is established. In this way, in DTN, data is transmitted even if the communication path between terminals is not always connected. In DTN, at a location where the communication path is interrupted, a new communication path is established by moving the terminal, and the terminal can also transmit and receive data using this path.

Here, in DTN, in order to execute data sharing at an early stage, it is important to arrange terminals, particularly terminals that relay data (terminals that temporarily hold data).

In this regard, Patent Document 2 discloses a technique related to the arrangement of anchor nodes (devices that relay data). In the technique described in Patent Literature 2, it is determined whether or not the own node should be an anchor node (device that relays data) based on the number of hops between the own node and the variable node.

Patent Document 3 discloses a technique related to selection of a mobility anchor (device that relays data). In the technique described in Patent Document 3, a mobility anchor having the smallest communication load is selected.

International Publication No. 2009/078427 JP 2011-029888 A International Publication No. 2008/072660 Special table 2009-542125 gazette

As described above, the technique described in Patent Document 2 selects an anchor node based on the number of hops. In the technique described in Patent Document 3, a mobility anchor is selected based on a communication load.

However, in the DTN, when the anchor node is selected based on the number of hops as in the technique described in Patent Document 2, depending on the movement status of the anchor node, the data transmission destination terminal and the anchor node approach each other. There is a possibility not to. In this case, it takes a long time to establish communication between the data transmission destination terminal and the anchor node, and the time required for a plurality of transmission destination terminals to share data may increase. There is sex.

In addition, in the DTN, if the mobility anchor is selected based on the communication load as in the technique described in Patent Document 3, a terminal that is distant from the data transmission destination terminal is selected as the mobility anchor. there is a possibility. In this case, there is a possibility that communication between the data transmission destination terminal and the mobility anchor may not be established, and there is a problem that data cannot be shared between the terminals.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, reduce the time required for data sharing in DTN, and increase the execution rate of data sharing between terminals, a communication system, a data sharing method, and a program Is provided.

The terminal of the present invention is a storage means for storing first data, a control means for acquiring position information indicating positions of the own apparatus and other terminals, and information relating to second data stored in the other terminals, Communication means for transmitting and receiving the first data and the second data by inter-terminal communication directly connected to the other terminal, and the control means includes position information of the own device and the other terminal, A movement request for requesting movement is notified to the other terminal based on information on the second data.

The communication system of the present invention includes storage means for storing first data, position information indicating the positions of the own apparatus and other terminals, and control means for acquiring information relating to second data stored in the other terminals, Communication means for transmitting and receiving the first data and the second data by inter-terminal communication directly connected to the other terminal, and the control means includes position information of the own device and the other terminal, first information And a terminal that notifies a movement request for requesting movement to the other terminal based on the information related to the second data, and a control device that manages the terminal, the control device includes position information of the terminal. And role judging means for judging the role of the terminal based on the communication history and the terminal performance, and role notifying means for notifying the terminal of the role judged by the role judging means. That features To.

The data sharing method of the present invention stores first data, acquires position information indicating positions of the own device and other terminals, and information on second data stored in the other terminals, and The first data and the second data are transmitted / received by communication between terminals directly connected to the other terminal based on the location information of the own device and the other terminal and information on the first and second data. In contrast, a movement request for requesting movement is notified.

The recording medium for storing the program of the present invention acquires processing for storing the first data, position information indicating the positions of the own device and other terminals, and information regarding the second data stored in the other terminals. Processing, processing for transmitting / receiving the first data and second data by inter-terminal communication directly connected to the other terminal, position information of the own device and the other terminal, and information on the first and second data And causing the computer to execute a process of notifying a movement request for requesting movement to the other terminal.

According to the present invention, in DTN, it is possible to reduce the time required for data sharing and to increase the execution rate of data sharing between terminals.

It is a figure which shows the example of arrangement | positioning of the terminal based on DTN. It is a figure which shows the structural example of the terminal in the 1st Embodiment of this invention. It is a flowchart which shows the operation example of the anchor terminal P or Q in the 1st Embodiment of this invention. It is a figure which shows the example of arrangement | positioning of the terminal contained in the communication system in the 1st Embodiment of this invention. It is a figure which shows the other example of arrangement | positioning of the terminal contained in the communication system in the 1st Embodiment of this invention. It is a figure which shows the other example of arrangement | positioning of the terminal contained in the communication system in the 1st Embodiment of this invention. It is a figure which shows the other example of arrangement | positioning of the terminal based on DTN. It is a figure which shows the structural example of the terminal (anchor terminal, a carrier terminal, a normal terminal) in the 2nd Embodiment of this invention. It is a figure which shows the structural example of the anchor terminal in the 3rd Embodiment of this invention. It is a figure which shows the structural example of the other terminal (normal terminal and carrier terminal) in the 3rd Embodiment of this invention. It is a flowchart which shows the operation example of the anchor terminal in the 3rd Embodiment of this invention. It is a flowchart which shows the operation example of the other terminal (normal terminal and carrier terminal) in the 3rd Embodiment of this invention. It is a figure which shows the structural example of the terminal (anchor terminal, a carrier terminal, a normal terminal) in the 4th Embodiment of this invention. It is a flowchart which shows the operation example in case each terminal (anchor terminal, a normal terminal, and a carrier terminal) exchanges data in the 4th Embodiment of this invention. It is a figure which shows the structural example of the anchor terminal in the 5th Embodiment of this invention. It is a figure which shows the structural example of the anchor terminal in the 6th Embodiment of this invention. It is a figure which shows the structural example of the terminal (anchor terminal, a carrier terminal, a normal terminal) in the 7th Embodiment of this invention. It is a flowchart which shows the operation example in case each terminal (anchor terminal, a normal terminal, and a carrier terminal) determines the role of an own apparatus in the 7th Embodiment of this invention. It is a structural example of the communication system in the 8th Embodiment of this invention. It is a structural example of the control apparatus 400 in the 8th Embodiment of this invention. It is a flowchart which shows the operation example of the control apparatus 400 in the 8th Embodiment of this invention.

<First Embodiment>
A first embodiment of the present invention will be described with reference to the drawings. Note that the reference numerals of the drawings attached to the outline are attached to the respective elements for convenience as an example for facilitating understanding, and the description of the outline is not intended to be any limitation.

As described above, in DTN, data is transferred to a terminal capable of communication even if an intermediate communication path is not established, and the data is temporarily held in the terminal. Then, the terminal resumes data transfer when communication is established. Therefore, in DTN, the movement pattern of the terminal affects the data arrival probability. For this reason, it may take time to share data depending on the movement pattern of the terminal. This problem will be described with reference to the drawings.

FIG. 1 is a diagram showing an arrangement example of terminals conforming to DTN. In the communication system shown in FIG. 1, terminals 1 to 6 are moving. It is assumed that the terminals 1, 2, and 4 are approaching each other at a certain time T_1. In this situation, since the terminals 1, 2, and 4 are at a distance that allows ad hoc communication, they can exchange and share data with each other. For example, the terminals 1, 2, and 4 share the data X. On the other hand, since the terminals 3, 5, and 6 are separated from any terminal, they cannot communicate with any terminal.

Also, at other time T_2, the terminals 1, 2, 3, 4, 5, 6 are moving. Since the terminal 4 is approaching a distance that allows ad hoc communication with the terminal 5 and the terminal 6, the data X can be shared. On the other hand, although the terminal 3 has moved, since the terminals 1 and 2 have moved away, they cannot communicate with any terminal. Therefore, the data Y held by the terminal 3 is not shared by terminals other than the terminal 3.

If the movement pattern as described above is repeated, even if it passes through the same point as the other terminals 1 and 2 like the terminal 3, the data may not be shared if the passing time is different. If the movement pattern of any terminal changes, it may be possible to share data between all terminals. However, if the movement pattern changes, it will take a long time to share data between terminals. It takes time.

Therefore, in the first embodiment of the present invention, a terminal that relays data notifies a movement request to other terminals including a data transmission source terminal and a data transmission destination terminal. Here, the terminal that relays the data notifies the other terminal of the movement request so that the data can be shared at an early stage based on the position and movement status of the own apparatus and the position of the other terminal. Therefore, data sharing can be performed at an early stage by moving other terminals based on the movement request.

FIG. 2 is a diagram illustrating a configuration example of a terminal in the first embodiment of the present invention. The terminal is a movable terminal having a wireless communication function, such as a mobile phone, a smartphone, a tablet terminal, a notebook computer, or an in-vehicle device. These terminals communicate directly with each other using a wireless communication function to transmit and receive data. Examples of such inter-terminal communication include ad hoc communication, Wi-Fi (Wireless Fidelity) Direct, and Bluetooth (registered trademark).

As shown in FIG. 2, the terminal according to the first embodiment of the present invention includes a storage unit 101, a control unit 102, and a communication unit 103.

The storage unit 101 stores data of its own device. In addition, the storage unit 101 stores data acquired from a terminal that relays the other data or another terminal through inter-terminal communication.

The control unit 102 acquires location information of other terminals. The position information is, for example, information including the longitude and latitude where the other terminal is located. The location information is acquired from, for example, another terminal via a mobile phone network or a wireless LAN (Local Area Network).

Also, the control unit 102 acquires information regarding data stored in other terminals. The information regarding data is, for example, an identifier assigned to a plurality of data. Information related to the data is acquired from another terminal via a mobile phone network or a wireless LAN, for example.

The control unit 102 notifies the other terminal of the movement request based on the position of each terminal and the information on the data stored in the own device and each terminal. The control unit 102 calculates the movement request so that each of the plurality of terminals can execute data sharing at an early stage in consideration of the position of the other terminal and the type of data held, and notifies the terminal.

For example, when the other terminal does not hold (store) the data stored in the own device, the control unit 102 requests the other terminal to move to a position where it can communicate with the own device. Notify move request.

In addition, for example, when the own device does not hold (store) the data stored in the other terminal, the control unit 102 requests the other terminal to move to a position where the own device and the terminal can communicate with each other. Notify move request.

In addition, for example, when one terminal does not hold predetermined data, the control unit 102 moves to a range or a point where the one terminal can communicate with another terminal holding the predetermined data. A movement request for requesting movement is notified.

The movement request is a request for urging other terminals to move to a range where communication between the own device and the terminal is possible, for example. In addition, the movement request is a request for urging other terminals to move to a range in which inter-terminal communication with a terminal that relays other data, for example, is possible. In addition, the movement request may prompt a plurality of other terminals to move to an arbitrary range or point at the same time. In this case, a terminal that relays data may simultaneously move a plurality of other terminals to the arbitrary range or point and share data with each other.

The control unit 102 notifies each terminal of a movement request via the communication unit 103. In the first embodiment of the present invention, a terminal that relays data notifies a movement request to another terminal managed by the terminal. In addition, the control unit 102 can communicate with the terminal that relays other data via the communication unit 103, the location information of the other terminal managed by the own device, or the holding by the inter-terminal communication or via the mobile phone network. Notify the type of data to be used

The communication unit 103 transmits / receives data to / from each terminal by inter-terminal communication. In addition, the communication unit 103 receives position information of each terminal from each terminal or another terminal that relays other data by inter-terminal communication or via a mobile phone network.

FIG. 3 is a flowchart showing an operation example of the terminal P or Q that relays data in the first embodiment of the present invention.

The control unit 102 acquires the location information of the other terminal and the information regarding the type of data held by the other terminal, and stores it in the storage unit 101 (S101).

The control unit 102 creates a movement request to be notified to the other terminal based on the location information of the own device and other terminals and the information on the data held by the own device and each terminal (S102).

The communication unit 103 notifies the movement request to a target terminal (another terminal managed by the own apparatus) among other terminals (S103).

FIG. 4 is a diagram illustrating an arrangement example of terminals included in the communication system according to the first embodiment of the present invention. In FIG. 4, a hot spot is a geographical area where the frequency of communication between terminals is high. A hot spot is a place where many people holding terminals such as stations gather, and it is assumed that the frequency of communication between terminals increases at the station.

A terminal that relays data (anchor terminal) is a terminal that frequently communicates with other terminals in a hot spot. Since the anchor terminal frequently communicates with other terminals that visit the hot spot, it can be said that the anchor terminal is a terminal representing the hot spot. In FIG. 4, terminals P and Q are anchor terminals. Terminal P has a high communication frequency with terminals A and B associated with itself, and terminal Q has a high communication frequency with terminals D, E, and F associated with itself. An anchor terminal is a terminal that has a high communication frequency with a normal terminal and stays for a long time at a point where the distance from the other terminal is close or when the other terminal passes frequently. In addition, the anchor terminal may be a terminal that is fixedly set (or stationary at the place) where many users holding other terminals are gathered.

Other terminals include a terminal having the first characteristic and a terminal having the second characteristic.

A terminal having the first characteristic is a terminal having a high communication frequency in at least one hot spot. A terminal having the first characteristic is referred to as a normal terminal. The normal terminal is associated with at least one anchor terminal that represents the hot spot. In FIG. 4, terminals A, B, C, E, and F are normal terminals, terminals A, B, and C are associated with anchor terminal P, and terminals E and F are associated with anchor terminal Q. .

On the other hand, a terminal having the second feature is a terminal that frequently moves between different hot spots. A terminal having the second characteristic is referred to as a carrier terminal. The carrier terminal is a terminal that frequently communicates with a plurality of different normal terminals. In FIG. 4, terminal D is a carrier terminal. Terminal D, which is a carrier terminal, moves between terminal P and terminal Q, and communicates with both normal terminals A and B associated with terminal P and normal terminals E and F associated with terminal Q. Frequent.

The operation of the entire system will be described with reference to FIGS.

In FIG. 4, the anchor terminal P is present at a position where communication opportunities are likely to occur with the normal terminals A, B, and C associated with the own device. Further, the anchor terminal Q is present at a position where a communication opportunity between the normal terminals E and F associated with the own apparatus and the carrier terminal D is likely to occur.

In FIG. 4, the normal terminals A and B are close to the anchor terminal P, and the data X is shared between the terminals A, B, and P. At this time, although the terminal C holds the data Y, since it is away, data sharing with other terminals is not performed. Further, the normal terminals E and F and the carrier terminal D are close to the anchor terminal Q and are within the inter-terminal communication range, but no data is shared because none of the terminals holds data.

In the first embodiment of the present invention, the anchor terminal P notifies the normal terminal C and the carrier terminal D of a movement request for prompting movement to the communication range of the own apparatus (anchor terminal P). When the normal terminal C and the carrier terminal D are notified of the movement request, for example, the normal terminal C and the carrier terminal D display the position specified by the movement request on a display unit (not shown) and specify the normal terminal C and the carrier terminal D for the user. By notifying the set position, it is urged to move to the position.

FIG. 5 shows an example of terminal arrangement when the normal terminal C and the carrier terminal D move in response to the movement request after the anchor terminal P notifies the normal terminal C and the carrier terminal D of the movement request in FIG. It is.

In FIG. 5, the normal terminal C and the carrier terminal D exist within a range where they can communicate with the anchor terminal P by moving based on the movement request. Therefore, the anchor terminal P and the carrier terminal D share the data Y held by the normal terminal C. The data X held by the carrier terminal P is also shared by the normal terminal C and the carrier terminal D. Note that the normal terminals A and B have moved away from the anchor terminal P.

In the first embodiment of the present invention, the anchor terminal P notifies the carrier terminal D of a movement request for prompting movement to the communication range of the anchor terminal Q. In addition, the anchor terminal P notifies the normal terminals A and B of a movement request for prompting movement to the communication range of the own apparatus (anchor terminal P). In addition, the anchor terminal Q notifies the normal terminals E and F of a movement request for prompting movement to the communication range of the own apparatus (anchor terminal Q).

FIG. 6 shows normal terminals A, B, E and F and carrier terminals after anchor terminals P and anchor terminals Q in FIG. 5 notify the normal terminals A, B, E and F and carrier terminals D of the movement request. It is the example of arrangement | positioning of a terminal when D moves according to the said movement request | requirement.

In FIG. 6, the normal terminal A and the normal terminal B exist at positions where they can communicate with the anchor terminal P by moving based on the movement request. Therefore, the normal terminal A and the normal terminal B can share the data Y held by the anchor terminal P. Further, the carrier terminal D exists at a position where it can communicate with the anchor terminal Q and the normal terminals E and F. Therefore, the anchor terminal Q and the normal terminals E and F share the data X and Y held by the carrier terminal D.

As described above, the anchor terminal according to the first embodiment of the present invention is able to perform data sharing at an early stage based on the position and movement status of the anchor terminal and the position of the other terminal. Notify move request. Thus, the other terminal moves based on the movement request from the anchor terminal. As a result, data sharing among a plurality of terminals can be performed at an early stage.

<Second Embodiment>
A second embodiment of the present invention will be described with reference to the drawings.

In the DTN, as described above, since the data is temporarily stored in the relay terminal that relays data, if the storage area of the relay terminal is insufficient, the data may not reach the destination terminal as requested. This problem will be described with reference to the drawings.

FIG. 7 is a diagram showing another example of arrangement of terminals conforming to DTN. In the communication system shown in FIG. 7, the terminal 1 holds data ac and the terminal 2 holds data df. In this state, the terminal 3 enters a range in which ad hoc communication is possible with each of the terminal 1 and the terminal 2 and shares data with each other.

At this time, the terminal 3 can store only the data a and b and the data d and e due to the limitation of the storage capacity of the terminal 3, and discards the data c and data f. Thereafter, as shown in FIG. 7, the terminal 4 communicates with the terminal 3, and the terminal 4 receives the data a, b, d, and e. However, although the terminal 4 requested the data c, the terminal 4 cannot receive the data c via the terminal 3 due to the limitation of the storage capacity of the terminal 3 that is a relay terminal. Therefore, it may take a long time for the terminal 4 to receive the data c.

Therefore, in the second embodiment of the present invention, in order to solve the above problem, a priority is set for data, and data stored (or deleted) by each terminal is determined according to the priority. The data sharing between terminals is executed at an early stage.

FIG. 8 is a diagram illustrating a configuration example of a terminal (anchor terminal, carrier terminal, normal terminal) in the second embodiment of the present invention.

As shown in FIG. 8, in the second embodiment of the present invention, each terminal includes a storage unit 101, a control unit 102, and a communication unit 103.

In the second embodiment of the present invention, the storage unit 101 includes a data storage unit 201, a related terminal storage unit 202, and a role storage unit 203.

The data storage unit 201 stores data of its own device and data acquired from the other anchor terminal or another terminal.

The related terminal storage unit 202 stores information related to terminals that are highly related to the device itself.

The related terminal storage unit 202 of the anchor terminal stores information on the carrier terminal and the normal terminal managed by the own apparatus (or frequently communicated). The related terminal storage unit 202 of the normal terminal and the carrier terminal stores identification information of anchor terminals that frequently communicate. In particular, since the carrier terminal moves between the plurality of anchor terminals, the related terminal storage unit 202 of the carrier terminal stores information on the plurality of anchor terminals that communicate with the own device.

The role storage unit 203 stores whether the own device is a normal terminal, a carrier terminal, or an anchor terminal.

In the second embodiment of the present invention, the control unit 102 includes a data exchange unit 301 and a data exchange priority control unit 302.

The data exchange unit 301 exchanges data stored in the data storage unit 201 with each other at the time when communication between terminals becomes possible. The data exchange unit 301 exchanges the data so that the data held by both terminals after data sharing matches. The data exchange unit 301 uses a storage and distribution type data sharing method such as DTN as a data exchange method.

The data exchange priority control unit 302 performs data exchange priority control in the data exchange unit 301 based on the related terminal information stored in the related terminal storage unit 202. For example, when the storage capacity of the data storage unit 201 is insufficient, the data exchange priority control unit 302 preferentially stores data of terminals associated with each other. The terminals associated with each other are, for example, an anchor terminal and a normal terminal or a carrier terminal managed by the anchor terminal. When the storage capacity of the data storage unit 201 is insufficient, the anchor terminal does not share data with, for example, a normal terminal or a carrier terminal that is not managed by the anchor terminal. By such priority control during data exchange, it is possible to improve the data sharing rate among a plurality of normal terminals or carrier terminals associated with one anchor terminal.

As described above, each terminal in the second exemplary embodiment of the present invention provides priority to data, and determines data stored (or deleted) by each terminal according to the priority. Therefore, in the second embodiment of the present invention, data sharing between terminals can be performed at an early stage.

<Third Embodiment>
A third embodiment of the present invention will be described with reference to the drawings.

FIG. 9 is a diagram illustrating a configuration example of an anchor terminal in the third embodiment of the present invention. As shown in FIG. 9, the storage unit 101 of the anchor terminal includes a data storage unit 201, a related terminal storage unit 202, and a role storage unit 203. The anchor terminal control unit 102 includes a data exchange unit 301, a movement request issuing unit 303, and an information collecting unit 304.

The information collecting unit 304 acquires the position information of the own device. The position information is acquired by, for example, a GPS (Global Positioning System) built in the terminal. The position information is, for example, information including the longitude and latitude where the other terminal is located. Further, the information collection unit 304 of the anchor terminal acquires position information of other terminals. The position information is acquired directly from another terminal, for example, by communication between terminals. Further, the position information is acquired from another anchor terminal via a mobile phone network, a wireless LAN, or the like, for example.

The movement request issuing unit 303 notifies the movement request to other terminals based on the acquired position of each terminal. In addition to the movement request, the movement request issuing unit 303 may give an incentive so that users of other terminals actively respond to the movement request. The incentive may be anything that has merit for the user holding the other terminal, such as money, giveaways, and points for evaluating the user. The movement request issuing unit 303 may determine an incentive to be given based on the position of another terminal. For example, when a carrier terminal that requests to move between predetermined anchor terminals does not respond to the movement request, the movement request issuing unit 303 responds to the movement request to the user of the carrier terminal. To notify that a free gift can be obtained.

The data exchange unit 301 acquires the data stored in the other anchor terminal or the other terminal in response to the fact that the terminal can communicate with the other anchor terminal or the other terminal. Further, the data exchange unit 301 transmits the data stored in the own device to the other anchor terminal or another terminal.

FIG. 10 is a diagram illustrating a configuration example of other terminals (normal terminal and carrier terminal) in the third exemplary embodiment of the present invention. As shown in FIG. 10, the other terminal includes a storage unit 101, a control unit 102, a communication unit 103, and a movement request user notification unit 104.

The storage unit 101 of another terminal according to the third embodiment of the present invention includes a data storage unit 201, a related terminal storage unit 202, and a role storage unit 203. Further, the control unit 102 of the other terminal includes a data exchange unit 301, an information collection unit 304, and a movement request reception unit 305.

The information collection unit 304 of the other terminal acquires the position information of the own device. The position information is acquired by, for example, a GPS built in the terminal. The information collection unit 304 notifies the anchor terminal of the acquired position information via the communication unit 103.

The movement request reception unit 305 receives a movement request from another terminal or another anchor terminal via the communication unit 103.

The movement request user notification unit 104 of the other terminal is a means for notifying the user of the received movement request. The movement request user notification unit 104 is a display unit, for example, and displays the received movement request on the display unit. The movement request user notification unit 104 is a speaker, for example, and reads out the received movement request by voice.

FIG. 11 is a flowchart showing an operation example of the anchor terminal in the third embodiment of the present invention.

The information collection unit 304 acquires location information of other terminals (S201).

The movement request issuing unit 303 notifies a movement request to other terminals based on the acquired position of each terminal and the type of data held by each terminal (S202).

The data exchanging unit 303 acquires data stored in the other anchor terminal or other terminal in response to the fact that the inter-terminal communication with the other anchor terminal or other terminal can be performed, and data stored in the own device Is transmitted to the other anchor terminal or another terminal (S203).

FIG. 12 is a flowchart showing an operation example of another terminal (normal terminal and carrier terminal) in the third embodiment of the present invention.

The information collection unit 304 acquires terminal position information and notifies the anchor terminal of the position information (S301).

The movement request reception unit 305 receives a movement request from the anchor terminal via the communication unit 103 (S302).

The movement request user notification unit 104 of the other terminal notifies the user of the received movement request (S303).

As described above, the anchor terminal according to the third embodiment of the present invention allows other terminals to perform data sharing at an early stage based on the position and movement status of the anchor terminal and the position of the other terminal. To notify the move request. In addition, when other terminals move based on a movement request from the anchor terminal, data sharing among a plurality of terminals can be performed at an early stage.

<Fourth Embodiment>
A fourth embodiment of the present invention will be described with reference to the drawings.

In the fourth embodiment of the present invention, each terminal stores only data related to a keyword registered in advance in the storage unit of the own device. Each terminal stores data that is not related to a keyword registered in advance in a temporary data storage unit that temporarily stores data. By adopting such a configuration, it is possible to save the data capacity of the storage unit of each terminal.

FIG. 13 is a diagram illustrating a configuration example of a terminal (anchor terminal, carrier terminal, normal terminal) in the fourth embodiment of the present invention.

As illustrated in FIG. 13, in the fourth embodiment of the present invention, each terminal includes a storage unit 101, a control unit 102, a communication unit 103, a temporary data storage unit 105, and a filter unit 106. .

The control unit 102 of each terminal according to the fourth embodiment of the present invention includes a data exchange unit 301. The storage unit 101 of each terminal according to the fourth embodiment of the present invention includes a data storage unit 201 and a keyword storage unit 204.

The keyword storage unit 204 stores a predetermined keyword. The predetermined keyword is, for example, a keyword in which the user of the device is interested, and is registered in advance by the user. For example, the keyword may be attached to the data, and in this case, the keyword may be stored in the header portion of the data.

The temporary data storage unit 105 of each terminal in the fourth embodiment of the present invention temporarily stores data acquired by the data exchange unit 301 from other terminals. Temporary data storage unit 105 deletes data that has been stored for a predetermined time. In the fourth embodiment of the present invention, the data exchange unit 301 executes data sharing with other terminals based on the data stored in the temporary data storage unit 105.

The filter unit 106 determines whether the data stored in the temporary data storage unit 105 is related to the keyword stored in the keyword storage unit 204. Whether the data is related to the keyword is determined based on, for example, whether the data includes the keyword. Based on the determination result, the filter unit 106 causes the data storage unit 201 to store data related to the keyword stored in the keyword storage unit 204 among the data stored in the temporary data storage unit 105.

FIG. 14 is a flowchart showing an operation example when each terminal (anchor terminal, normal terminal, and carrier terminal) exchanges data in the fourth embodiment of the present invention.

The keyword storage unit 204 stores a predetermined keyword in advance (S401).

The data exchange unit 301 transmits the data stored in the temporary data storage unit 105 to the other terminal in response to the communication between the terminals with the other terminal being enabled. Further, the data exchange unit 301 stores the data received from another terminal in the temporary data storage unit 105 (S402).

The filter unit 106 determines whether the data stored in the temporary data storage unit 105 is related to the keyword stored in the keyword storage unit 204 (S403).

If the filter unit 106 determines that it is related (YES in S403), it stores the data determined to be related in the data storage unit 201 (S404).

On the other hand, if the filter unit 106 determines that it is not related (NO in S403), the process ends.

As described above, each terminal according to the fourth embodiment of the present invention stores only data related to a keyword registered in advance in the storage unit of the own device, and temporarily stores data not related to the keyword registered in advance. It memorize | stores in the temporary data memory | storage part to memorize | store. Therefore, each terminal in the fourth embodiment of the present invention can save the data capacity of the storage unit.

<Fifth Embodiment>
A fifth embodiment of the present invention will be described with reference to the drawings.

In the fifth embodiment of the present invention, an anchor terminal transmits / receives data to / from an anchor terminal existing in an area outside the communication range of the own device, so that a terminal in an area outside the communication range of the own device. The data stored in is received. Data transmission / reception between anchor terminals is executed via, for example, a mobile phone network or a wireless LAN instead of inter-terminal communication.

FIG. 15 is a diagram illustrating a configuration example of an anchor terminal in the fifth embodiment of the present invention. As shown in FIG. 15, the anchor terminal according to the fifth embodiment of the present invention includes a storage unit 101, a control unit 102, a communication unit 103, a temporary data storage unit 105, and an inter-area communication unit 107. .

The anchor terminal control unit 102 according to the fifth embodiment of the present invention includes a data exchange unit 301 and an inter-area data exchange unit 306. The inter-area data exchange unit 306 transmits / receives data to / from an anchor terminal existing in an area outside the communication range of the own device via a mobile phone network, a wireless LAN, or the like. The inter-area data exchange unit 306 receives data stored in other anchor terminals via the inter-area communication unit 107. Further, the inter-area data exchange unit 306 transmits the data stored in the own device to the other anchor terminal.

The storage unit 101 of the anchor terminal according to the fifth embodiment of the present invention includes a data storage unit 201, a keyword storage unit 204, and another area keyword storage unit 205. The other area keyword storage unit 205 stores a keyword stored in the keyword storage unit 204 of another terminal (carrier terminal or normal terminal) that is not a management target of the own device. The keyword is acquired from another anchor terminal via the inter-area communication unit 107.

The inter-area communication unit 107 transmits / receives data to / from other anchor terminals. The inter-area communication unit plays a bypass role between anchor terminals, and supplements data transfer by carrier terminals moving between a plurality of anchor terminals. The inter-area communication unit 107 is, for example, a mobile phone network or a wireless LAN, and can exchange data with other anchor terminals even at a long distance.

The filter unit 106 according to the fifth embodiment of the present invention determines whether the data received by the data exchange unit 301 or the inter-area data exchange unit 306 is related to the keyword stored in the keyword storage unit 204. The filter unit 106 causes the data storage unit 201 to store data determined to be associated with the keyword.

As described above, in the fifth embodiment of the present invention, a terminal transmits / receives data to / from an anchor terminal that exists in an area outside the communication range of its own device via a mobile phone network or a wireless LAN. Do. Therefore, in the fifth embodiment of the present invention, a terminal can share data with a plurality of terminals even when there is no carrier terminal that goes back and forth between anchor terminals. On the other hand, by limiting the terminals having the function to anchor terminals, the number of terminals equipped with a communication method (such as a mobile phone network or a wireless LAN) other than inter-terminal communication can be reduced, and the cost of each terminal increases. Can be suppressed.

<Sixth Embodiment>
A sixth embodiment of the present invention will be described with reference to the drawings.

In the sixth embodiment of the present invention, the anchor terminal is connected to a display device, and this display device displays data stored by the anchor terminal. Since the anchor terminal is a device that relays data, it stores more data than other terminals (normal terminals and carrier terminals). Therefore, by displaying the data stored in the anchor terminal on the display device, the user who contacts the displayed data can efficiently grasp the data in the communication system.

FIG. 16 is a diagram illustrating a configuration example of an anchor terminal in the sixth embodiment of the present invention. As shown in FIG. 16, the anchor terminal in the sixth embodiment of the present invention includes a storage unit 101, a control unit 102, a communication unit 103, a temporary data storage unit 105, a filter unit 106, and inter-area communication. A display unit 107, a display data processing unit 108, and a display data output unit 109.

The storage unit 101 includes a data storage unit 201, a keyword storage unit 204, and another area keyword storage unit 205. The control unit 102 includes a data exchange unit 301 and an inter-area data exchange unit 306.

The display data processing unit 108 processes the data stored in the data storage unit 201 into data suitable for display. For example, the display data processing unit 108 extracts only data necessary for display from a large number of data stored in the data storage unit 201 and processes the extracted data into data suitable for display (display data). The display data processing unit 108 counts the number of data related to each keyword and displays it as a numerical value. The display data processing unit 108 extracts data created or transferred in a predetermined period or a predetermined geographical area, and processes the extracted data into data suitable for display (display data).

The display data output unit 109 outputs the data processed by the display data processing unit 108 to a display device (not shown). The display device is a device for displaying display data, and is a display, a projector, or the like. The display device displays text sentences, images, moving images, and the like as display data.

In the sixth embodiment of the present invention, the display data processing unit 108 processes only data stored in the data storage unit 201 into display data. That is, the display data processing unit 108 does not process the data temporarily stored in the temporary data storage unit 105 into display data.

As described above, in the sixth embodiment of the present invention, the anchor terminal is connected to the display device, and the display device displays data stored by the anchor terminal. Since the anchor terminal stores more data than other terminals, the user who contacts the displayed data can efficiently grasp the data in the communication system.

<Seventh Embodiment>
A seventh embodiment of the present invention will be described with reference to the drawings.

In the seventh embodiment of the present invention, each terminal includes a communication storage unit that stores a communication history, and determines the role of its own device based on the communication history. Specifically, each terminal determines whether the role of its own device is an anchor terminal, a carrier terminal, or a communication terminal based on the communication history.

FIG. 17 is a diagram illustrating a configuration example of a terminal (anchor terminal, carrier terminal, normal terminal) in the seventh embodiment of the present invention.

As illustrated in FIG. 17, in the seventh embodiment of the present invention, each terminal includes a storage unit 101, a control unit 102, and a communication unit 103.

The storage unit 101 of each terminal in the seventh embodiment of the present invention includes a data storage unit 201, a related terminal storage unit 202, a role storage unit 203, a communication storage unit 206, and a terminal specification storage unit 207. Prepare.

The communication storage unit 206 records a communication history with which the terminal communicated via the communication unit. As the communication history, the communication storage unit 206 stores, for example, the time of communication, the communication partner, and the data transmitted to and received from the communication partner in association with each other. In addition, the communication storage unit 206 stores, as a communication history, for example, a communication connection establishment time, such as TCP (Transmission Control Protocol) established by the own device, and a disconnection time in association with each other. Further, the communication storage unit 206 may store a communication message for neighbor discovery for finding a neighboring node in association with the transmitted / received data. The communication history stored in the communication storage unit 206 is transmitted to other terminals via the communication unit 103. The communication storage unit 206 also stores the communication history of the other terminal received from the other terminal.

The terminal specification storage unit 207 stores the specification information of the own device such as the CPU speed, the memory capacity, the storage capacity, and the communication speed as the terminal performance of the own device. Information regarding the terminal performance stored in the terminal specification storage unit 207 is transmitted to another terminal via the communication unit 103. The terminal specification storage unit 207 also stores the terminal performance of the other terminal received from the other terminal.

The control unit 101 of each terminal according to the seventh embodiment of the present invention includes a data exchange unit 301, a data exchange priority control unit 302, an information collection unit 304, and a role determination unit 307.

The role determination unit 307 determines whether the own device is an anchor terminal, a carrier terminal, or a normal terminal based on information stored in the communication storage unit 206 and the terminal specification storage unit 207. The role determination unit 307 stores the determined result in the role storage unit 203.

For example, the role determination unit 307 determines that the own device is an anchor terminal when the own device has a higher communication frequency and higher terminal specifications than other terminals. When the role determination unit 307 determines that the own device is an anchor terminal, the role determination unit 307 notifies the other terminal that the own device has become an anchor terminal via the communication unit 103.

Also, for example, when the own device moves a longer distance than other terminals and the communication frequency with other terminals is high, the role determining unit 307 determines that the own device is a carrier terminal. When role determining unit 307 determines that its own device is a carrier terminal, role determining unit 307 causes anchor terminal having a high communication frequency to be stored in related terminal storage unit 202 based on the communication history. Note that the role determination unit 307 may notify the anchor terminal associated with the own device that the association has been made. Further, when the role determination unit 307 determines that the own device is a carrier terminal, the role determination unit 307 may notify other terminals via the communication unit 103 that the own device has become a carrier terminal.

Further, for example, when the role determination unit 307 receives a notification from another terminal that the terminal is an anchor terminal or a carrier terminal, the role determination unit 307 determines that the own apparatus is a normal terminal. When the role determination unit 307 determines that the own device is a normal terminal, the role determination unit 307 stores an anchor terminal having a high communication frequency in the related terminal storage unit 202 based on the communication history. Note that the role determination unit 307 may notify the anchor terminal associated with the own device that the association has been made.

FIG. 18 is a flowchart showing an operation example when each terminal (anchor terminal, normal terminal, and carrier terminal) determines the role of its own device in the seventh embodiment of the present invention.

The information collection unit 304 acquires the location information of the own device and other terminals (S501).

The communication storage unit 206 stores the communication history of the own device and other terminals (S502).

The terminal specification storage unit 207 stores information on the terminal performance of the own device and other terminals (S503).

Based on the position information acquired by the information collection unit 304 and the information stored in the communication storage unit 206 and the terminal specification storage unit 207, the role determination unit 307 determines whether the own device is an anchor terminal, a carrier terminal, or a normal terminal. Which one is to be determined is determined (S504).

The role determination unit 307 notifies the determined role of the own device to other terminals via the communication unit 103 (S505).

The role determination unit 307 stores the determined role of the own device in the role storage unit 203 (S506).

As described above, in the seventh embodiment of the present invention, each terminal includes a communication storage unit that stores a communication history, and determines the role of its own device based on the communication history. Therefore, each terminal according to the seventh embodiment of the present invention can have its own device play an appropriate role based on the communication history.

<Eighth Embodiment>
An eighth embodiment of the present invention will be described with reference to the drawings.

In the eighth embodiment of the present invention, the control device centrally determines the role of each terminal.

FIG. 19 is a configuration example of a communication system in the eighth embodiment of the present invention. As illustrated in FIG. 19, the communication system includes anchor terminals P and Q, normal terminals A, B, C, E, and F, a carrier terminal D, and a control device 400.

The control device 400 controls the anchor terminals P and Q, the normal terminals A, B, C, E, and F, and the carrier terminal D included in the communication system. The control device 400 controls the anchor terminals P and Q, the normal terminals A, B, C, E, F, and the carrier terminal D via, for example, a mobile phone network or a wireless LAN.

FIG. 20 is a configuration example of the control device 400 according to the eighth embodiment of the present invention. The control device 400 includes a communication unit 401, a communication history collection unit 402, a terminal specification collection unit 403, an information collection unit 404, a role determination unit 405, and a role notification unit 406.

The communication unit 401 communicates with each terminal. The communication unit 401 connects to each terminal by, for example, direct connection using ad hoc communication, multi-hop connection via a relay terminal using ad hoc communication, LAN connection, or mobile phone network connection.

The communication history collection unit 402 collects communication history stored in each terminal. The terminal specification collection unit 403 collects information regarding the terminal performance of each terminal. The information collection unit 404 collects location information of each terminal.

Based on the information collected by the communication history collection unit 402, the terminal specification collection unit 403, and the information collection unit 404, the role determination unit 405 determines whether each terminal is an anchor terminal, a carrier terminal, or a normal terminal. to decide. The determination method is the same as the determination method in the role determination unit 307 in the eighth embodiment of the present invention.

The role notification unit 406 notifies each terminal of the role of each terminal determined by the role determination unit 405.

FIG. 21 is a flowchart showing an operation example of the control device 400 in the eighth embodiment of the present invention.

The information collection unit 404 collects location information of each terminal (S601).

The communication history collection unit 402 collects the communication history of each terminal (S602).

The terminal specification collection unit 403 collects information regarding the terminal performance of each terminal (S603).

Based on the information collected by the communication history collection unit 402, the terminal specification collection unit 403, and the information collection unit 404, the role determination unit 405 determines whether each terminal is an anchor terminal, a carrier terminal, or a normal terminal. Judgment is made (S604).

The role notification unit 406 notifies each terminal of the role of each terminal determined by the role determination unit 405 (S605).

As described above, in the eighth embodiment of the present invention, the control device 400 can centrally determine the role of each terminal.

<Ninth Embodiment>
A ninth embodiment of the present invention will be described.

In the ninth embodiment, each terminal computer, CPU (Central Processing Unit) or MPU (Micro-Processing Unit) executes software (program) that realizes the functions of the above-described embodiments. Each terminal is an anchor terminal, a carrier terminal, and a normal terminal.

In the ninth embodiment of the present invention, each terminal obtains software (program) that implements the functions of the above-described embodiments via various storage media such as CD-R (Compact Disc Recordable) or a network. To do. A program acquired by each terminal or a storage medium storing the program constitutes the present invention. The software (program) may be stored in advance in a predetermined storage unit included in the control device 1 or the controller 3, for example.

The computer, CPU or MPU of each terminal reads and executes the program code of the acquired software (program). Therefore, each terminal executes the same process as that of each terminal in each embodiment described above.

According to the ninth embodiment of the present invention, the present invention can be applied to applications such as a program to be implemented in a computer, CPU, MPU, or the like of each terminal.

As mentioned above, although embodiment of this invention was described, this invention is not limited to each above-mentioned embodiment. The present invention can be implemented based on modifications, substitutions, and adjustments of the embodiments. The present invention can also be implemented by arbitrarily combining the embodiments. That is, the present invention includes various modifications and corrections that can be realized in accordance with all the disclosed contents and technical ideas of the present specification.

Some or all of the above embodiments can be described as in the following supplementary notes, but are not limited thereto.

[Appendix 1]
Storage means for storing first data;
Control means for acquiring position information indicating positions of the own apparatus and other terminals, and information relating to second data stored in the other terminals;
Communication means for transmitting and receiving the first data and the second data by communication between terminals directly connected to the other terminal,
The said control means notifies the movement request | requirement which requests | requires movement with respect to the said other terminal based on the positional information on an own apparatus and another terminal, and the information regarding 1st and 2nd data, The terminal characterized by the above-mentioned. .

[Appendix 2]
When the other terminal does not have the first data, the control means notifies the movement request for requesting the other terminal to move to a position where the terminal can communicate with the own device. ,
The additional communication according to claim 1, wherein the communication unit transfers the first data to the other terminal using the inter-terminal communication when the communication unit moves to a position where the terminal can communicate with the other terminal. Terminal.

[Appendix 3]
The control means, when the own device does not have the second data, notifies the movement request for requesting the other terminal to move to a position where communication between the own device and the terminal is possible,
The supplementary note 1 or 2, wherein the communication means receives the second data from the other terminal using the inter-terminal communication when moving to a position where the terminal can communicate with the other terminal. The listed terminal.

[Appendix 4]
When there are a plurality of the other terminals and the data stored in the first other terminal is not stored in the second other terminal, a predetermined location is provided for both the first and second other terminals. 4. The terminal according to any one of appendices 1 to 3, wherein a movement request for requesting movement is notified.

[Appendix 5]
Among the plurality of other terminals, related terminal storage means for storing information related to other terminals highly relevant to the own device;
Data exchange priority control means for calculating the priority of data transmitted and received by the transmission means, and selecting data received from the other terminal based on the calculated priority;
The supplementary note 4 is characterized in that the data exchange priority control means refers to the related terminal storage means and preferentially selects the data stored in another terminal having high relevance to the own apparatus as the received data. The listed terminal.

[Appendix 6]
The terminal according to any one of appendices 1 to 5, wherein the control means notifies information related to an incentive given when a user of the other terminal responds to the movement request in addition to the movement request. .

[Appendix 7]
Keyword storage means for storing the first keyword;
Temporary data storage means for temporarily storing second data stored in the other terminal;
Filter means for storing the second data in the storage means when the second data stored in the temporary data storage means is data related to the first keyword;
The terminal according to any one of appendices 1 to 6, further comprising:

[Appendix 8]
Further comprising another area keyword storage means for storing a second keyword stored in the other terminal,
The filter means stores the second data in the storage means when the second data stored in the temporary data storage means is data related to the second keyword. The terminal according to appendix 7.

[Appendix 9]
Terminal specification storage means for storing the terminal performance of the own device and other terminals;
Communication history storage means for storing communication history of the device itself and other terminals;
Based on the terminal performance and the communication history, the role determination means for determining the role of the own device,
The role determination means determines the role of the own device when the terminal performance of the own device is higher than that of the other terminal and the own device is communicating with a larger number of other terminals than the other terminal. The terminal according to any one of appendices 1 to 8, wherein the terminal is determined to be an anchor terminal that notifies the terminal of a movement request.

[Appendix 10]
The role determining means determines that the role of the own device is a carrier terminal that moves between the anchor terminals when the own device is moving a longer distance than the other terminal. 9. The terminal according to 9.

[Appendix 11]
The terminal according to appendix 9 or 10, wherein the role determining means notifies the role of the own device to at least one of the other terminals in response to determining the role of the own device.

[Appendix 12]
Display data processing means for processing the data stored in the storage means for display;
The terminal according to any one of appendices 1 to 11, further comprising: display data output means for outputting display data processed by the display data processing means.

[Appendix 13]
A terminal according to any one of appendices 1 to 12,
A control device for managing the terminal;
The controller is
Role determining means for determining the role of the terminal based on the position information of the terminal, communication history, and terminal performance;
Role notification means for notifying the terminal of the role of the terminal determined by the role determination means;
A communication system comprising:

[Appendix 14]
Storing the first data;
Obtaining position information indicating the positions of the own device and other terminals, and information relating to second data stored in the other terminals;
Sending and receiving the first data and the second data by communication between terminals directly connected to the other terminal,
A data sharing method comprising: notifying the other terminal of a movement request for movement based on position information of the own device and the other terminal and information on the first and second data.

[Appendix 15]
When the other terminal does not have the first data, the other terminal is notified of a movement request for requesting the other terminal to move to a position where it can communicate with the own apparatus,
15. The data sharing method according to appendix 14, wherein the first data is transferred to the other terminal using the inter-terminal communication when the terminal moves to a position where communication with the other terminal is possible.

[Appendix 16]
When the own device does not have the second data, the other terminal is notified of a movement request for requesting to move to a position where communication between the own device and the terminal can be performed,
The data sharing method according to appendix 14 or 15, wherein the second data is received from the other terminal using the inter-terminal communication when the terminal moves to a position where the other terminal can communicate with the other terminal. .

[Appendix 17]
When there are a plurality of the other terminals and the data stored in the first other terminal is not stored in the second other terminal, a predetermined location is provided for both the first and second other terminals. 17. The data sharing method according to any one of appendices 14 to 16, wherein a movement request for requesting movement is notified.

[Appendix 18]
Stores information related to other terminals that are highly relevant to the own device among the plurality of other terminals,
Calculate the priority of the data to be transmitted and received, and select data to be received from the other terminal based on the calculated priority,
18. The data sharing method according to appendix 17, wherein data stored in another terminal highly related to the own device is selected as the received data with priority.

[Appendix 19]
The data sharing method according to any one of appendices 14 to 18, wherein in addition to the movement request, information on an incentive given when a user of the other terminal responds to the movement request.

[Appendix 20]
Remember the first keyword,
Temporarily storing the second data stored in the other terminal;
21. The appendix 14 to 20, wherein the second data is stored when the second data temporarily stored is data related to the first keyword. Data sharing method.

[Appendix 21]
Storing the second keyword stored in the other terminal;
The data sharing method according to appendix 20, wherein the second data is stored when the second data temporarily stored is data related to the second keyword.

[Appendix 22]
Stores the terminal performance of its own device and other terminals,
Storing the communication history of the device itself and other terminals;
Based on the terminal performance and the communication history, determine the role of its own device,
When the terminal performance of the own device is higher than that of the other terminal and the own device is communicating with a larger number of other terminals than the other terminal, the movement request is notified to the other terminal of the role of the own device. 22. The data sharing method according to any one of appendices 14 to 21, wherein the data sharing method is determined to be an anchor terminal.

[Appendix 23]
The data sharing according to appendix 22, wherein the role of the own device is determined to be a carrier terminal that moves between the anchor terminals when the own device is moving a longer distance than the other terminal. Method.

[Appendix 24]
24. The data sharing method according to appendix 22 or 23, wherein the role of the own device is notified to at least one of the other terminals in response to determining the role of the own device.

[Appendix 25]
Processing the stored first data and second data for display;
The data sharing method according to appendix 24, wherein the display data is output.

[Appendix 26]
Processing to store the first data;
Processing for acquiring position information indicating the positions of the own device and other terminals, and information relating to second data stored in the other terminals;
A process of transmitting and receiving the first data and the second data by inter-terminal communication directly connected to the other terminal;
A feature of causing a computer to execute a process of notifying a movement request for requesting movement to the other terminal based on position information of the own apparatus and the other terminal and information on the first and second data. A recording medium that stores a program to be executed.

[Appendix 27]
When the other terminal does not have the first data, a process of notifying a movement request for requesting the other terminal to move to a position where the terminal can communicate with the own device;
27. The program according to appendix 26, further comprising: a process of transferring the first data to the other terminal using the inter-terminal communication when the terminal moves to a position where the terminal can communicate with the other terminal. Recording medium for storing.

[Appendix 28]
A process for notifying the other terminal of a movement request for requesting movement to a position where communication between the own apparatus and the terminal is possible when the own apparatus does not have the second data;
The supplementary note 26 or 27, further comprising: a process of receiving the second data from the other terminal using the inter-terminal communication when the terminal moves to a position where the terminal can communicate with the other terminal. Recording medium for storing programs.

[Appendix 29]
When there are a plurality of the other terminals and the data stored in the first other terminal is not stored in the second other terminal, a predetermined location is provided for both the first and second other terminals. 29. A recording medium for storing a program according to any one of appendices 26 to 28, including a process for notifying a movement request for requesting to move to the recording medium.

[Appendix 30]
Among the plurality of other terminals, a process of storing information related to other terminals highly relevant to the own device;
Processing for calculating the priority of the data to be transmitted and received, and selecting data received from the other terminal based on the calculated priority;
29. A recording medium for storing a program according to appendix 29, including a process of preferentially selecting data stored in another terminal having high relevance to the own apparatus as the received data.

[Appendix 31]
The program according to any one of supplementary notes 26 to 30, further comprising a process of notifying the information on incentives given when the user of the other terminal responds to the movement request in addition to the movement request. Recording media to be used.

[Appendix 32]
Processing to store the first keyword;
A process of temporarily storing second data stored in the other terminal;
Any one of appendices 26 to 31 including a process of storing the second data when the second data temporarily stored is data related to the first keyword A recording medium for storing the program described above.

[Appendix 33]
Storing the second keyword stored in the other terminal;
The record for storing a program according to appendix 32, wherein the second data is stored when the second data temporarily stored is data related to the second keyword. Medium.

[Appendix 34]
Processing to store the terminal performance of the own device and other terminals;
Processing to store communication history of the device and other terminals;
Based on the terminal performance and the communication history, a process for determining the role of the own device,
When the terminal performance of the own device is higher than that of the other terminal and the own device is communicating with a larger number of other terminals than the other terminal, the movement request is notified to the other terminal of the role of the own device. 34. A recording medium for storing a program according to any one of appendices 26 to 33, including a process for determining an anchor terminal to be executed.

[Appendix 35]
Item 34. The supplementary note 34, including a process of determining that the role of the own device is a carrier terminal moving between the anchor terminals when the own device is moving a longer distance than the other terminal. Recording medium for storing programs.

[Appendix 36]
36. A record for storing a program according to appendix 34 or 35, which includes a process of notifying at least one of the other terminals of the role of the own device in response to determining the role of the own device Medium.

[Appendix 37]
Processing the first data or the second data to be stored for display;
37. A recording medium for storing a program according to any one of appendices 26 to 36, including a process of outputting the display data.

As mentioned above, although this invention was demonstrated with reference to embodiment (and an Example), this invention is not limited to the said embodiment (and Example). Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

This application claims priority based on Japanese Patent Application No. 2014-0667609 filed on Mar. 28, 2014, the entire disclosure of which is incorporated herein.

DESCRIPTION OF SYMBOLS 101 Memory | storage part 102 Control part 103 Communication part 104 Movement request | requirement user notification part 105 Temporary data memory | storage part 106 Filter part 107 Inter-area communication part 201 Data memory | storage part 202 Related terminal memory | storage part 203 Role memory | storage part 204 Keyword memory | storage part 205 Other area keyword memory | storage Unit 206 communication storage unit 207 terminal specification storage unit 301 data exchange unit 302 data exchange priority control unit 303 movement request issue unit 304 information collection unit 305 movement request reception unit 306 inter-area data exchange unit 307 role determination unit 400 control device 401 communication unit 402 Communication history collection unit 403 Terminal specification collection unit 404 Information collection unit 405 Role determination unit 406 Role notification unit

Claims (10)

1. Storage means for storing first data;
   Control means for acquiring position information indicating positions of the own apparatus and other terminals, and information relating to second data stored in the other terminals;
   Communication means for transmitting and receiving the first data and the second data by communication between terminals directly connected to the other terminal,
   The said control means notifies the movement request | requirement which requests | requires movement with respect to the said other terminal based on the positional information on an own apparatus and another terminal, and the information regarding 1st and 2nd data, The terminal characterized by the above-mentioned. .
2. When the other terminal does not have the first data, the control means notifies the movement request for requesting the other terminal to move to a position where the terminal can communicate with the own device. ,
   The said communication means transfers the said 1st data to the said other terminal using the said communication between terminals, when it moves to the position which can communicate between the said other terminals and terminals. Terminal.
3. The control means, when the own device does not have the second data, notifies the movement request for requesting the other terminal to move to a position where communication between the own device and the terminal is possible,
   The said communication means receives the said 2nd data from the said other terminal using the said communication between terminals, when moving to the position which can communicate between the said other terminals and terminals. The terminal described in.
4. When there are a plurality of the other terminals and the data stored in the first other terminal is not stored in the second other terminal, a predetermined location is provided for both the first and second other terminals. The terminal according to any one of claims 1 to 3, characterized in that a movement request for requesting to move to is notified.
5. Among the plurality of other terminals, related terminal storage means for storing information related to other terminals highly relevant to the own device;
   Data exchange priority control means for calculating the priority of data transmitted and received by the transmission means, and selecting data received from the other terminal based on the calculated priority;
   5. The data exchange priority control means refers to the related terminal storage means and preferentially selects data stored in another terminal having high relevance to the own apparatus as the received data. The terminal described in.
6. Keyword storage means for storing the first keyword;
   Temporary data storage means for temporarily storing second data stored in the other terminal;
   Filter means for storing the second data in the storage means when the second data stored in the temporary data storage means is data related to the first keyword;
   The terminal according to claim 1, further comprising:
7. Terminal specification storage means for storing the terminal performance of the own device and other terminals;
   Communication history storage means for storing communication history of the device itself and other terminals;
   Based on the terminal performance and the communication history, the role determination means for determining the role of the own device,
   The role determination means determines the role of the own device when the terminal performance of the own device is higher than that of the other terminal and the own device is communicating with a larger number of other terminals than the other terminal. The terminal according to claim 1, wherein the terminal is determined to be an anchor terminal that notifies a movement request to the terminal.
8. A terminal according to any one of claims 1 to 7;
   A control device for managing the terminal,
   The controller is
   Role determining means for determining the role of the terminal based on the position information of the terminal, communication history, and terminal performance;
   Role notification means for notifying the terminal of the role of the terminal determined by the role determination means;
   A communication system comprising:
9. Storing the first data;
   Obtaining position information indicating the positions of the own device and other terminals, and information relating to second data stored in the other terminals;
   Sending and receiving the first data and the second data by communication between terminals directly connected to the other terminal,
   A data sharing method comprising: notifying the other terminal of a movement request for movement based on position information of the own device and the other terminal and information on the first and second data.
10. Processing to store the first data;
    Processing for acquiring position information indicating the positions of the own device and other terminals, and information relating to second data stored in the other terminals;
    A process of transmitting and receiving the first data and the second data by inter-terminal communication directly connected to the other terminal;
    A feature of causing a computer to execute a process of notifying a movement request for requesting movement to the other terminal based on position information of the own apparatus and the other terminal and information on the first and second data. A recording medium that stores a program to be executed.

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