WO2013114530A1

WO2013114530A1 - Communication system, user terminal, position management device, and communication control method

Info

Publication number: WO2013114530A1
Application number: PCT/JP2012/051969
Authority: WO
Inventors: 崇興治; 秋山　雅紀
Original assignee: 富士通株式会社
Priority date: 2012-01-30
Filing date: 2012-01-30
Publication date: 2013-08-08

Abstract

A user terminal (3) transmits at least identification information for another user terminal, and identification information that identifies user terminals and is stored in the user terminal (3), to a position management device (8), when there is no response from the other user terminal after the user terminal (3) calls the other user terminal. The position management device receives at least the identification information for the other terminal that was transmitted by the calling user terminal, and the identification information that identifies user terminals and is stored in the calling user terminal. Then, the position management device determines a forwarding destination for the call to be a user terminal from which the distance to the other user terminal is shorter than a threshold, from among the user terminals corresponding to the identification information stored in the calling user terminal, on the basis of the association between the position information and identification information of a plurality of user terminals, and the identification information for the other terminal and the identification information stored in the calling user terminal.

Description

COMMUNICATION SYSTEM, USER TERMINAL, LOCATION MANAGEMENT DEVICE, AND COMMUNICATION CONTROL METHOD

The present invention relates to a communication system, a user terminal, a location management device, and a communication control method.

In recent years, in a communication system that performs communication between user terminals, a destination user terminal selects a response method for an incoming call depending on whether or not the user of the user terminal can respond or presence information indicating the presence status of the user. A method has been proposed.
For example, in the following Patent Document 1, when a mobile station moves to a call area associated with a transfer destination number in advance and an incoming call to the mobile station is not established, the call address is associated with the call area. A method for transferring an incoming call to a forwarding number is described.

Further, in Patent Document 2 below, a communication method desired by a connection destination user is selected based on presence information of the connection destination user, and between the connection request terminal and the connection reception terminal according to the selected communication method. A method for performing communication processing is described.

Japanese Patent Laid-Open No. 10-23535 Japanese Patent Laid-Open No. 2005-20615

For example, in an emergency such as the occurrence of a disaster, it is required to transmit information quickly and reliably from a caller user terminal to a callee user terminal.
However, in the technique disclosed in Patent Document 1, it is required to register in advance a transfer destination number corresponding to each call area, and when the mobile station is located in an unexpected call area that is not registered. An incoming call to the mobile station may not be transferred to the transfer destination number.

In the technique disclosed in Patent Document 1, the recipient of the incoming call transfer destination may not be the acquaintance of the caller. In such a case, the information may not be easily communicated.
Furthermore, with the technique of Patent Document 2, the connection requesting terminal may not be able to communicate with the connection receiving terminal depending on the contents of the presence information of the connection destination user.
Accordingly, an object of the present invention is to more efficiently determine a transmission destination for outgoing calls.

In addition, the present invention is not limited to the above-described object, and other effects of the present invention can be achieved by the functions and effects derived from the respective configurations shown in the embodiments for carrying out the invention which will be described later. It can be positioned as one of

(1) As a first proposal, for example, in a communication system including a plurality of user terminals that perform wireless communication and a position management device that manages the positions of the plurality of user terminals, at least of the plurality of user terminals When one user terminal does not receive a response from the other user terminal after transmitting to the other user terminal from the terminal side storage unit that stores identification information for identifying each user terminal, and at least the other A terminal-side transmission unit that transmits the identification information of the user terminal and the identification information stored in the terminal-side storage unit to the position management device, wherein the position management device includes position information of the plurality of user terminals. Is stored in association with the identification information, and at least the other user terminal identification information and the terminal-side storage unit transmitted from the terminal-side transmission unit. The device-side receiving unit that receives the stored identification information, the contents of the device-side storage unit, the identification information of the other user terminal received by the device-side receiving unit, and the terminal-side storage unit Based on the stored identification information, among the user terminals corresponding to the identification information stored in the terminal-side storage unit, the user terminal whose distance from the other user terminal is smaller than a threshold is selected. A communication system including an apparatus-side processing unit that determines a transmission destination for outgoing calls can be used.

(2) As a second proposal, for example, among the plurality of user terminals of a communication system including a plurality of user terminals that perform wireless communication and a position management device that manages the positions of the plurality of user terminals. A storage unit for storing identification information for identifying each user terminal and at least one other user terminal when there is no response from the other user terminal after transmitting the other terminal to the other user terminal. It is possible to use a user terminal that includes a transmission unit that transmits the identification information of the user terminal and the identification information stored in the terminal-side storage unit to the location management device.

(3) Further, as a third proposal, the position management device of a communication system comprising a plurality of user terminals that perform wireless communication and a position management device that manages the positions of the plurality of user terminals, The location information of the plurality of user terminals is transmitted from the storage unit that stores the information associated with the identification information for identifying each user terminal, and the user terminal that has transmitted to other user terminals among the plurality of user terminals. A receiving unit that receives at least the identification information of the other user terminal and the identification information stored in the user terminal that made the call; the content of the storage unit; and the other user that is received by the receiving unit Based on the identification information of the terminal and the identification information stored in the user terminal that performed the transmission, the identification information stored in the user terminal that performed the transmission corresponds to the identification information. Among the user terminals, said other distance between the user terminal a smaller user terminals than the threshold value and a processing unit for determining the transfer destination of the outgoing, it is possible to use a location management device.

(4) As a fourth proposal, there is provided a communication control method for a communication system comprising a plurality of user terminals that perform wireless communication and a position management device that manages the positions of the plurality of user terminals. If at least one of the user terminals does not receive a response from the other user terminal after transmitting from the own station to the other user terminal, at least the identification information of the other user terminal and the own station are stored. Identification information for identifying each user terminal is transmitted to the location management device, and the location management device stores the location information of the plurality of user terminals in association with the identification information, and transmits the transmission. The identification information for identifying each user terminal, which is transmitted from the performed user terminal and stored in at least the identification information of the other user terminal and the user terminal that performed the transmission Is stored in the user terminal that made the call based on the stored content, the identification information of the other user terminal, and the identification information stored in the user terminal that made the call. Of the user terminals corresponding to the identification information, a communication control method can be used in which a user terminal whose distance from the other user terminal is smaller than a threshold is determined as the transmission destination of the call.

It becomes possible to determine the forwarding destination for outgoing calls more efficiently.

It is a figure which shows an example of a structure of the communication system which concerns on one Embodiment of this invention. It is a figure which shows an example of a structure of the user terminal shown in FIG. It is a figure which shows an example of a structure of the position management apparatus shown in FIG. It is a figure which shows an example of operation | movement of a communication system. It is a figure which shows an example of a positional information storage part. It is a figure which shows an example of the telephone directory data which a transmission terminal has. It is a figure which shows an example of a near terminal list. It is a figure which shows an example of operation | movement of a communication system. It is a figure which shows an example of operation | movement of a communication system. It is a figure which shows an example of operation | movement of a communication system. It is a figure which shows an example of the telephone directory data which a calling object terminal has. It is a figure which shows an example of a co-notifier list | wrist. It is a figure which shows an example of a near terminal list. It is a figure which shows an example of operation | movement of a communication system. It is a figure which shows an example of the telephone number possession presence / absence of the calling object terminal in a co-notifier terminal. It is a figure which shows an example of a credit transfer destination list. It is a figure which shows an example of a near terminal list. It is a figure which shows an example of operation | movement of a communication system. It is a figure which shows an example of the positional information on a calling object terminal. It is a figure which shows an example of the estimated position information of a calling object terminal. It is a flowchart which shows an example of operation | movement of a communication system. It is a flowchart which shows an example of operation | movement of a communication system. It is a flowchart which shows an example of operation | movement of a communication system. It is a figure which shows an example of the hardware constitutions of a user terminal. It is a figure which shows an example of the hardware constitutions of a position management apparatus.

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below is merely an example, and there is no intention to exclude various modifications and technical applications that are not explicitly described in the embodiment described below. That is, it goes without saying that the embodiments can be variously modified without departing from the spirit of the present invention.
[1] One Embodiment (1.1) Configuration Example of Communication System According to One Embodiment FIG. 1 is a diagram illustrating an example of a configuration of a communication system 1 according to one embodiment.

The communication system 1 shown in FIG. 1 includes, for example, user terminals 3-1 and 3-2, a BS (Base Station) 4, an RNC (Radio Network Controller) 5, an eNB (eNodeB) 7, A management device 8 is provided. Hereinafter, when the user terminals 3-1 and 3-2 are not distinguished from each other, they are simply referred to as the user terminal 3. The user terminal 3 is a communication device that can be moved by the user, and in this sense, is synonymous with a user device (UE: User Equipment), a wireless mobile terminal, or a mobile station (MS: Mobile Station). Furthermore, the number of user terminals 3 is not limited to the number illustrated in FIG.

The BS 4 provides a wireless area composed of cells, sectors, and the like, and can wirelessly communicate with the user terminal 3-1 located in the wireless area.
In addition, the BS 4 can transmit data received from the user terminal 3-1 to the RNC 5, and can also transmit data received from the RNC 4 to the user terminal 3-1.
Further, the BS 4 can transmit the data received from the user terminal 3-1 to other user terminals located in the wireless area provided by the own station 4, and in the wireless area provided by the own station 4. Data received from other located user terminals can be transmitted to the user terminal 3-1.

The user terminal 3-1 can wirelessly communicate with the BS 4 that provides a wireless area where the own station 3-1 is located. That is, the user terminal 3-1 can perform wireless communication with other user terminals in the wireless area in which the own station 3-1 is located, and can also communicate with users in other wireless areas via the core network 9 or the like. Wireless communication can be performed with the terminal.
The user terminal 3-1 measures the position of its own station 3-1 using, for example, a GPS (Global Positioning System) 2, and sends the measurement result (position information) via the BS 4, RNC 5, and the subscriber switch 6. Can be transmitted to the position management device 8. The measurement result may include time information indicating the measurement date and time in addition to the position information.

The RNC 5 can control the BS 4 and transmit data received from the user terminal 3-1 via the BS 4 to the subscriber exchange 6. Further, the RNC 5 can transmit the data received from the subscriber exchange 6 to the user terminal 3-1 via the BS 4.
The eNB 7 provides a radio area composed of cells, sectors, and the like, and can perform radio communication with the user terminal 3-2 located in the radio area.

The eNB 7 can transmit the data received from the user terminal 3-2 to the subscriber switch 6, and can also transmit the data received from the subscriber switch 6 to the user terminal 3-2.
Further, the eNB 7 can transmit the data received from the user terminal 3-2 to other user terminals located in the radio area provided by the own station 7, and also in the radio area provided by the own station 7. Data received from other located user terminals can be transmitted to the user terminal 3-2.

The user terminal 3-2 can wirelessly communicate with the eNB 7 that provides a wireless area where the local station 3-2 is located. That is, the user terminal 3-2 can perform wireless communication with other user terminals in the wireless area in which the own station 3-2 is located, and can also be connected to users in other wireless areas via the core network 9 or the like. Wireless communication can be performed with the terminal.
Also, the user terminal 3-2 measures the position of the own station 3-2 using, for example, the GPS 2, and transmits the measurement result (position information) to the position management device 8 via the eNB 7 and the subscriber switch 6. be able to. The measurement result may include time information indicating the measurement date and time in addition to the position information.

The subscriber exchange 6 transmits the data received from the user terminal 3-1 via the BS 4 and the RNC 5 to the user terminal 3-2 via the eNB 7 or to the other subscriber exchanges in the core network 9. Can be.
Further, the subscriber exchange 6 transmits data received from the user terminal 3-2 via the eNB 7 to the user terminal 3-1 via the RNC 5 and BS 4, or to other subscriber exchanges in the core network 9. Or send.

Further, the subscriber exchange 6 transmits data received from other subscriber exchanges in the core network 9 to the user terminal 3-1 via the RNC 5 and BS4, or to the user terminal 3-2 via the eNB 7. Or send.
Further, the subscriber exchange 6 can transmit the location information received from the user terminal 3 to the location management device 8.

That is, in the communication system 1, wireless communication including data communication, voice communication, and the like can be performed between the plurality of user terminals 3. For this reason, the plurality of user terminals 3 include, for example, a transmission terminal that performs transmission, a call target terminal that is a call target of transmission, a transfer destination terminal that is a transfer destination of transmission.
The position management device 8 manages the position of the user terminal 3. For example, the location management device 8 receives location information of the user terminal 3 via the subscriber exchange 6 and stores and manages the location information. Further, the location management device 8 can receive the telephone directory data that the user terminal 3 has.

In this example, when there is no response from the call target terminal even though the user terminal 3 as the call terminal sends a call to the other user terminal 3 as the call target terminal, the location management device 8, for example, The user terminal 3 registered in the terminal and located in the vicinity of the call target terminal is determined as the transfer destination terminal.
According to this example, since the user terminal 3 that is at least an acquaintance of the user of the calling terminal and is located in the vicinity of the call target terminal can be determined as the transfer destination, the transfer destination of the call can be more efficiently determined. It becomes possible to decide.

For example, when there is no response from the call target terminal, the calling terminal can make a call to the transfer destination terminal determined by the location management device 8. As a result, the user of the calling terminal can contact the user of the call target terminal from the user of the transfer destination terminal. As a result, it is possible to quickly and reliably transmit information from the user of the transmission terminal to the user of the call target terminal.

Hereinafter, configuration examples of the user terminal 3 and the position management device 8 will be described. In addition, each structural example of the user terminal 3 and the position management apparatus 8 shown below is an example to the last, and this invention is not limited to each structural example.
(1.2) Configuration Example of User Terminal 3 FIG.

As shown in FIG. 2, the user terminal 3 includes, for example, a telephone directory data storage unit 301, a transmitted location information storage unit 302, a movement detection unit 303, a location information transmission unit 304, and an emergency transmission unit. 305, a nearby terminal search request unit 306, and a nearby terminal search result receiving unit 307 are provided. In addition, the user terminal 3 includes, for example, a nearby terminal display unit 308, a transfer transmission unit 309, a telephone directory data providing unit 310, and a retained telephone number confirmation unit 311.

The phone book data storage unit 301 holds (stores) phone numbers of other user terminals 3 registered by a user of the own station 3 as phone book data, for example. The contents of the phone book data are updated and added as appropriate by the user. The phone book data includes, for example, a telephone number of a call target terminal and a telephone number of a transfer destination terminal (neighboring terminal).
That is, the telephone directory data storage unit 301 functions as an example of a terminal side storage unit that stores identification information for identifying each user terminal 3.

The transmitted location information storage unit 302 stores the location information of the local station 3 that the user terminal 3 last transmitted to the location management device 8 and time information about the time when the location information was measured. That is, the transmitted position information storage unit 302 stores the latest position information and time information transmitted from the user terminal 3 to the position management device 8.
The movement detection unit 303 acquires position information and time information of the local station 3 by communicating with the GPS 2 regularly or irregularly.

In addition, the movement detection unit 303 stores, for example, the position information and time information last transmitted to the position management device 8 and the acquired current position information and time information stored in the transmitted position information storage unit 302. By comparing, the moving distance of the local station 3 can be calculated.
Furthermore, for example, the movement detection unit 303 determines that the local station 3 is “moving at high speed” if the calculated movement distance is larger than a first threshold (hereinafter also referred to as a high-speed movement threshold), and the calculation is performed as described above. If the moving distance is less than or equal to the first threshold and greater than a second threshold smaller than the first threshold (hereinafter also referred to as a movement threshold), it is determined that the local station 3 is “moving”. If the calculated moving distance is equal to or smaller than the second threshold, it can be determined that the local station 3 is in the “no movement” state. The determination result can be notified to the position information transmission unit 304 together with the position information of the own station 3.

For example, when the movement detection unit 303 determines that the local station 3 is “moving at high speed”, the position information transmission unit 304 includes information on “high-speed movement”, the telephone number of the local station 3, the local station 3 The position information and time information are transmitted to the position management device 8.
Further, for example, when the movement detection unit 303 determines that the local station 3 is “moving”, the position information transmission unit 304 includes information on “no high-speed movement”, the telephone number of the local station 3, the local station 3 Position information and time information are transmitted to the position management device 8.

When the movement detection unit 303 determines that the own station 3 is in the “no movement” state, the position information transmission unit 304, for example, the own station 3 telephone number, the own station 3 position information, and time information May not be transmitted to the position management device 8.
Further, when the location information transmission unit 304 receives a registration completion notification indicating that the location information has been registered from the location management device 8, the location information transmission unit 304 can update the contents of the transmitted location information storage unit 302.

That is, when there is no response from the call target terminal after transmitting from the own station 3 to the call target terminal, the location information transmitting unit 304 at least identifies the call target terminal and the identification stored in the terminal-side storage unit 301. It functions as an example of a terminal side transmission unit that transmits information to the location management device 8.
The emergency call unit 305 provides the user with an input interface for making an emergency call to the call target terminal. When the user performs an emergency call operation on the call target terminal, the emergency call unit 305 can notify the nearby terminal search request unit 306 of the telephone number of the call target terminal. When there is a response from the call target terminal, the emergency transmission unit 305 may not notify the nearby terminal search request unit 306 of the telephone number of the call target terminal.

The nearby terminal search request unit 306 transmits, for example, the telephone number of the calling terminal, the telephone number of the calling target terminal, and the phone book data held by the calling terminal to the location management device 8 in response to a notification from the emergency calling unit 305. .
The neighboring terminal search result receiving unit 307 receives a neighboring terminal list related to the transfer destination terminal (neighboring terminal) located in the vicinity of the call target terminal from the location management device 8. The received nearby terminal list is notified to the nearby terminal display unit 308 when the automatic transfer function described later is not used, and is notified to the transfer transmission unit 309 when the automatic transfer function described later is used.

That is, the nearby terminal search result receiving unit 307 functions as an example of a terminal-side receiving unit that receives information related to a transmission destination determined by the location management device 8.
The neighboring terminal display unit 308 displays the neighboring terminal list received by the neighboring terminal search result receiving unit 307 to the sender. For example, if there is no response from the call target terminal, the nearby terminal display unit 308 displays the nearby terminal list received by the nearby terminal search result receiving unit 307 to the caller, while the call target terminal receives a response. In such a case, the neighboring terminal list may not be displayed to the caller.

That is, the nearby terminal display unit 308 functions as an example of a terminal side display unit that displays the information received by the terminal side reception unit 307.
The transfer sending unit 309 transfers the call to the transfer destination terminal according to the contents of the neighboring terminal list notified from the neighboring terminal search result receiving unit 307. The transfer process may be terminated, for example, when there is a response from the transfer recipient, or may be repeated until there are no transfer destination candidates from the nearby terminal list.

That is, the transfer transmission unit 309 functions as an example of a terminal side processing unit that performs transmission of transmission based on the information received by the terminal side reception unit 307.
The telephone directory data providing unit 310 provides telephone directory data held by the own station 3 when requested by the location management device 8.
The possessed telephone number confirmation unit 311 determines whether or not the telephone number received from the location management device 8 exists in the phone book data held by the local station 3, and returns the determination result to the location management device 8.

(1.3) Configuration Example of Location Management Device 8 An example of the configuration of the location management device 8 is shown in FIG.
As illustrated in FIG. 3, the location management device 8 exemplarily includes a location information storage unit 801, a location information reception unit 802, a location information prediction unit 803, a location information registration unit 804, and a neighborhood threshold setting unit. 805, a nearby terminal search request receiving unit 806, and a nearby terminal search unit 807 are provided. In addition, the location management device 8 illustratively includes a nearby terminal search result notification unit 808, a transfer transmission unit 809, a co-notifier list creation unit 810, a credit transfer destination list creation unit 811, and a telephone directory data acquisition unit 812. With.

The location information storage unit 801 holds (stores) the telephone number, location information, and time information of the user terminal 3.
That is, the position information storage unit 801 functions as an example of a device-side storage unit that stores position information of a plurality of user terminals 3 in association with identification information.
The location information receiving unit 802 receives the telephone number, location information, and time information of the user terminal 3 from each user terminal 3. The received telephone number, location information, and time information are notified to location information registration 804.

Further, the position information receiving unit 802 can receive, for example, information from each user terminal 3 as to whether or not the user terminal 3 is moving at high speed.
For example, when the information indicating that the user terminal 3 is “moving at high speed” is received from the user terminal 3, the position information receiving unit 802 notifies the position information predicting unit 303 of the received data.

For example, when information indicating that the user terminal 3 is “moving” is received from the user terminal 3, the position information receiving unit 802 notifies the position information registration unit 804 of the received data.
The location information prediction unit 803 includes the phone number, location information, and time information of the user terminal 3 received by the location information reception unit 802, and the phone number at the time of previous registration of the user terminal 3 stored in the location information storage unit 801. By comparing the position information and the time information, the moving speed and moving direction of the user terminal 3 are calculated, and the position information and time information at the moving destination of the user terminal 3 are predicted. The prediction result is notified to the position information registration unit 804 together with the telephone number of the user terminal 3.

That is, the position information prediction unit 803 functions as an example of a prediction unit that predicts the position of the user terminal 3 after a predetermined time based on the position information of the user terminal 3 at a plurality of times.
The location information registration unit 804 registers the telephone number, location information, and time information notified from the location information reception unit 802, the phone number notified from the location information prediction unit 803, and the prediction result in the location information storage unit 801 ( Store. Further, the location information registration unit 804 can notify the user terminal 3 that the registration processing of location information and the like has been completed.

The neighborhood threshold setting unit 805 provides an interface function for setting and saving a neighborhood threshold, which will be described later, to an administrator of the communication system 1, for example. Further, the neighborhood threshold setting unit 805 may increase the set neighborhood threshold value when no forwarding destination terminal is found or when there is no response from any forwarding destination terminal.
The nearby terminal search request receiving unit 806 receives the telephone number of the calling terminal, the telephone number of the call target terminal, and the phone book data held by the calling terminal from the user terminal 3 as the calling terminal. Each piece of received information is notified to the nearby terminal search unit 807 when the co-notifier list creation function described later is not used, and is notified to the co-notifier list creation unit 810 when the co-notifier list creation function is used. .

That is, the nearby terminal search request receiving unit 806 is a device-side receiving unit that receives at least the identification information of the call target terminal and the identification information stored in the terminal-side storage unit 301 transmitted from the terminal-side transmission unit 304. It serves as an example.
The nearby terminal search unit 807 is registered in the phone book data based on the telephone number of the call target terminal received by the nearby terminal search request receiving unit 806 and the phone book data held by the calling terminal, and the call target A search is performed from the location information storage unit 801 by using the user terminal 3 whose distance to the terminal is smaller than the above-described neighborhood threshold as a transfer destination terminal, and a neighborhood terminal list including the search result is created.

That is, the neighboring terminal search unit 807 is based on the contents of the device-side storage unit 801 and the identification information of the call target terminal and the identification information stored in the terminal-side storage unit 301 received by the device-side reception unit 806. The apparatus side that determines the user terminal whose distance to the call target terminal is smaller than the threshold among the user terminals 3 corresponding to the identification information stored in the terminal side storage unit 301 as the transmission destination (forwarding destination terminal). It functions as an example of a processing unit.

Further, when using the co-notifier list creation function, the neighboring terminal search unit 807 uses the telephone number of the call target terminal received by the neighboring terminal search request receiving unit 806 and the co-notifier list created by the co-notifier list creation unit 810. And the user terminal 3 that is registered in the co-notifier list and whose distance from the call target terminal is smaller than the above-described neighborhood threshold is searched from the location information storage unit 801 as a transfer destination terminal, and the search result Create a list of nearby terminals that contain.

Further, when using the trusted transfer destination list creation function, the nearby terminal search unit 807 uses the telephone number of the call target terminal received by the nearby terminal search request reception unit 806 and the trusted transfer destination list creation unit 811 to create the credit transfer destination list creation function. Based on the transfer destination list, a search is made from the location information storage unit 801 using the user terminal 3 that is registered in the trusted transfer destination list and whose distance from the call target terminal is smaller than the above-described neighborhood threshold as the transfer destination terminal. Then, a neighborhood terminal list including the search result is created.

Further, when using the location prediction function, the nearby terminal search unit 807 uses the telephone directory data based on the telephone number of the call target terminal received by the nearby terminal search request receiving unit 806 and the telephone directory data held by the calling terminal. And the user terminal 3 whose distance from the predicted position of the call target terminal after a predetermined time is smaller than the above-described neighborhood threshold is searched from the position information storage unit 801 as a transfer destination terminal, and the search result is Create a list of nearby terminals.

Note that the neighboring terminal list created by the neighboring terminal search unit 807 is notified to the neighboring terminal search result notification unit 808 when the transfer substitution function described later is not used, and the transfer transmission unit when the transfer substitution function described later is used. 809 is notified.
The neighboring terminal search result notifying unit 808 transmits the neighboring terminal list created by the neighboring terminal searching unit 807 to the user terminal 3 serving as a transmission terminal.

That is, the nearby terminal search result notification unit 808 functions as an example of a device-side transmission unit that transmits information related to a transmission destination of a transmission to the transmission terminal.
When there is no response from the call target terminal, the transfer transmission unit 809 transfers the transmission to the user terminal 3 as the transfer destination terminal included in the nearby terminal list created by the nearby terminal search unit 807. Note that the transfer process by the transfer transmission unit 809 may be ended when there is a response from the transfer destination terminal, or may be repeated until there is no transfer destination candidate from the neighboring terminal list.

In other words, the transfer transmission unit 809 has a function of transferring a call to a transfer destination terminal.
The co-notifier list creating unit 810 generates each phone book based on the phone book data of the calling terminal received by the nearby terminal search request receiving unit 806 and the phone book data of the call target terminal received by the phone book data acquiring unit 812. A telephone number registered in common with the data is extracted, and a co-notifier list including the extraction result is created.

The co-notifier list created by the co-notifier list creation unit 810 is notified to the nearby terminal search unit 807 when the credit transfer destination list creation function described later is not used, and when the credit transfer destination list creation function described later is used. The credit transfer destination list creation unit 811 is notified.
The credit transfer destination list creation unit 811 sends the phone number of the call target terminal to the possessed phone number confirmation unit 311 of the user terminal 3 corresponding to each phone number included in the co-notifier list notified from the co-notifier list creation unit 810. Confirm whether or not you own

That is, the credit transfer destination list creation unit 811 functions as an example of a confirmation unit that confirms whether or not the transfer destination terminal holds the identification information of the call target terminal.
Further, the credit transfer destination list creation unit 811 is based on the telephone number of the user terminal 3 that holds the telephone number of the call target terminal among the user terminals 3 corresponding to each telephone number included in the co-notifier list. A credit transfer list can be created. The credit transfer destination list created by the credit transfer destination list creation unit 811 is notified to the neighboring terminal search unit 807 together with the telephone number of the calling terminal and the telephone number of the call target terminal.

When there is a request from the co-notifier list creation unit 810, the phone book data acquisition unit 812 acquires the phone book data of the call target terminal from the phone book data provision unit 310 of the call target terminal, and acquires the acquired phone book data. The co-notifier list creation unit 810 is notified.
That is, the telephone directory data acquisition unit 812 has a function of further receiving the identification information stored in the terminal side storage unit 301 of the call target terminal.

Next, an operation example of the communication system 1 including the user terminal 3 and the position management device 8 configured as described above will be described.
(1.4) Example of operation of communication system (1.4.1) Neighboring terminal search operation Here, in the communication system 1, the user of the calling terminal has an urgent requirement for the user of the calling target terminal. Regardless, an example of a neighbor terminal search operation for displaying a transfer destination terminal candidate near the call target terminal on the caller terminal when there is no response from the call target terminal will be described.

Here, for example, the following preconditions (A) to (D) are used, but the same precondition is also adopted in each of the following operation examples unless otherwise specified.
(A) The telephone number of the calling terminal is “090-1234-5678”, and the telephone number of the call target terminal is “090-8765-4321”.
(B) The distance between two predetermined points shall be determined simply using the three-square theorem after setting the radius of the earth to 6378.137 km.

(C) It is assumed that the position information of all user terminals 3 is correctly registered in the position management device 8.
(D) The interval at which the user terminal 3 receives the position information from the GPS 2 and updates the interval is 2 minutes.
In the neighborhood terminal search operation, a neighborhood threshold is first set by the neighborhood threshold setting unit 805. Here, it is assumed that the neighborhood threshold is set to “70 m”, for example.

Next, when the emergency call unit 305 is sent to the telephone number “090-8765-4321” of the call target terminal but there is no response from the call target terminal, the emergency call unit 305 calls the nearby terminal search request unit 306. The telephone number “090-8765-4321” of the target terminal is notified. Whether there is no response from the call target terminal is, for example, whether there is a response from the call target terminal within a predetermined time after calling the telephone number “090-8765-4321” of the call target terminal. Can be determined based on

Here, when there is no response from the call target terminal, the neighboring terminal search request unit 306, as illustrated in FIG. 4, the telephone number “090-8765-4321” of the call target terminal and the phone book data of the calling terminal Are transmitted to the position management device 8 (step S10). The nearby terminal search request unit 306 may additionally transmit the telephone number “090-1234-5678” of the calling terminal.
The neighboring terminal search request receiving unit 806 of the location management device 8 receives each piece of information transmitted from the neighboring terminal search request unit 306 and notifies the neighboring terminal searching unit 807 of the received information.

The nearby terminal search unit 807 acquires the neighborhood threshold “70 m” from the neighborhood threshold setting unit 805.
Further, the neighboring terminal search unit 807 searches the location information storage unit 801 having the table illustrated in FIG. 5 using the telephone number “090-8765-4321” of the call target terminal as a key, and the location information “ Latitude: 35.57868573, longitude: 139.64245051 ”and time information“ 2011/10/20 17:51 ”are acquired. In the example illustrated in FIG. 5, the position information of the user terminal 3 is registered in the position information storage unit 801 as two-dimensional information including latitude and longitude, but the position information of the user terminal 3 is, for example, latitude , Longitude and altitude may be registered in the position information storage unit 801 as three-dimensional information.

Further, the neighboring terminal search unit 807 searches the location information storage unit 801 illustrated in FIG. 5 using each telephone number in the telephone directory data of the calling terminal as illustrated in FIG. The user terminal 3 whose distance is smaller than “70 m” which is the neighborhood threshold is extracted as the transfer destination terminal (step S11).
Here, a plurality of user terminals 3 having telephone numbers “090-1111-4444”, “090-1111-5555”, “090-2222-3333”, and “090-3333-2222” are extracted as transfer destination terminals. Then, the neighboring terminal search unit 807 creates a neighboring terminal list as illustrated in FIG. 7 (step S12). When there is no transfer destination terminal located within 70 m from the position of the call target terminal, the neighborhood threshold setting unit 805 changes the neighborhood threshold to a value greater than 70 m, and the above extraction operation is performed again. Good.

The neighboring terminal list created by the neighboring terminal search unit 807 is notified to the user terminal 3 as the calling terminal by the neighboring terminal search result notification unit 808 (step S13).
The neighboring terminal search result receiving unit 307 of the transmitting terminal receives the neighboring terminal list from the location management device 8 and notifies the neighboring terminal display unit 308 of the received neighboring terminal list.
Then, the neighboring terminal display unit 308 displays a neighboring terminal list (step S14).

Thus, according to this example, when there is no response from the call target terminal, the user of the calling terminal can obtain information on the transfer destination terminal near the call target terminal. As a result, the user of the calling terminal can make a call to the transfer destination terminal, and can communicate the message to the user of the call target terminal via the user of the transfer destination terminal.
(1.4.2) Automatic transfer operation Further, the user terminal 3 as the transmission terminal may automatically transfer the transmission to the transfer destination terminal based on the neighboring terminal list received from the location management device 8, for example. Good.

In the automatic transfer operation, first, a neighborhood threshold is set by the neighborhood threshold setting unit 805. Here, it is assumed that the neighborhood threshold is set to “70 m”, for example.
Next, when the emergency call unit 305 is sent to the telephone number “090-8765-4321” of the call target terminal but there is no response from the call target terminal, the emergency call unit 305 calls the nearby terminal search request unit 306. The telephone number “090-8765-4321” of the target terminal is notified. Whether there is no response from the call target terminal is, for example, whether there is a response from the call target terminal within a predetermined time after calling the telephone number “090-8765-4321” of the call target terminal. Can be determined based on

Here, when there is no response from the call target terminal, the neighboring terminal search request unit 306, as illustrated in FIG. 8, the telephone number “090-8765-4321” of the call target terminal and the phone book data of the calling terminal Are transmitted to the position management device 8 (step S20). The nearby terminal search request unit 306 may additionally transmit the telephone number “090-1234-5678” of the calling terminal.
The neighboring terminal search request receiving unit 806 of the location management device 8 receives each piece of information transmitted from the neighboring terminal search request unit 306 and notifies the neighboring terminal searching unit 807 of the received information.

Further, the neighboring terminal search unit 807 searches the location information storage unit 801 illustrated in FIG. 5 using each telephone number in the telephone directory data of the calling terminal as illustrated in FIG. The user terminal 3 whose distance is smaller than “70 m” which is the neighborhood threshold is extracted as the transfer destination terminal (step S21).
Here, a plurality of user terminals 3 having telephone numbers “090-1111-4444”, “090-1111-5555”, “090-2222-3333”, and “090-3333-2222” are extracted as transfer destination terminals. Then, the neighboring terminal search unit 807 creates a neighboring terminal list as illustrated in FIG. 7 (step S22).

The neighboring terminal list created by the neighboring terminal search unit 807 is notified to the user terminal 3 as the calling terminal by the neighboring terminal search result notification unit 808 (step S23).
The neighboring terminal search result receiving unit 307 of the sending terminal receives the neighboring terminal list from the location management device 8 and notifies the transfer sending unit 309 of the received neighboring terminal list.
Then, the transfer transmission unit 309 confirms that there is no response from the call target terminal and that there is a transfer destination candidate that has not attempted transfer among the transfer destination terminals in the nearby terminal list. “090-1111-4444” is selected as the telephone number of the transfer destination terminal from the terminal list, and the call is transferred to the selected telephone number (step S24).

When it is confirmed that there is no response to the transfer transmission to “090-1111-4444”, the transfer transmission unit 309 sets “090-1111-5555” as the telephone number of the next transfer destination terminal from the nearby terminal list. The call may be forwarded to the selected telephone number. In this case, when there is a response from the transfer destination terminal “090-1111-5555”, the transfer transmission unit 309 ends the process.
Thus, according to this example, the user terminal 3 as a calling terminal can automatically connect to a transfer destination terminal near the call target terminal when there is no response from the call target terminal.

(1.4.3) Transfer / transmission proxy operation The location management device 8 may perform the operation of automatically transferring the transmission from the transmission terminal to the transfer destination terminal instead of the transmission terminal.
In the transfer call proxy operation, first, the neighborhood threshold setting unit 805 sets the neighborhood threshold. Here, it is assumed that the neighborhood threshold is set to “70 m”, for example.

Here, when there is no response from the call target terminal, the neighboring terminal search request unit 306, as illustrated in FIG. 9, the call target terminal phone number “090-8765-4321” and the calling terminal phone book data Are transmitted to the position management device 8 (step S30). The nearby terminal search request unit 306 may additionally transmit the telephone number “090-1234-5678” of the calling terminal.
The neighboring terminal search request receiving unit 806 of the location management device 8 receives each piece of information transmitted from the neighboring terminal search request unit 306 and notifies the neighboring terminal searching unit 807 of the received information.

Further, the neighboring terminal search unit 807 searches the location information storage unit 801 illustrated in FIG. 5 using each telephone number in the telephone directory data of the calling terminal as illustrated in FIG. The user terminal 3 whose distance is smaller than “70 m” which is the neighborhood threshold is extracted as a transfer destination terminal (step S31).
Here, a plurality of user terminals 3 having telephone numbers “090-1111-4444”, “090-1111-5555”, “090-2222-3333”, and “090-3333-2222” are extracted as transfer destination terminals. Then, the neighboring terminal search unit 807 creates a neighboring terminal list as illustrated in FIG. 7 (step S32).

The nearby terminal list created by the nearby terminal search unit 807 is notified to the transfer transmission unit 809.
The transfer transmission unit 809 confirms that there is no response from the call target terminal and that there is a transfer destination candidate that has not attempted transfer among the transfer destination terminals in the neighbor terminal list. Then, “090-1111-4444” is selected as the telephone number of the transfer destination terminal, and the call is transferred to the selected telephone number (step S33).

When it is confirmed that there is no response to the transfer transmission to “090-1111-4444”, the transfer transmission unit 809 reads “090-1111-5555” as the telephone number of the next transfer destination terminal from the nearby terminal list. The call may be forwarded to the selected telephone number. In this case, when there is a response from the transfer destination terminal “090-1111-5555”, the transfer transmission unit 809 ends the process. If there is no response from any forwarding destination terminal included in the neighboring terminal list, the neighborhood threshold value may be controlled to increase as described above, for example, in the vicinity of the forwarding destination terminal. Further transfer destination terminals may be extracted.

Thus, according to this example, the user terminal 3 as a calling terminal can automatically connect to a transfer destination terminal near the call target terminal when there is no response from the call target terminal.
(1.4.4) Neighboring terminal search operation using the co-notifier list Further, as a transfer destination terminal, for example, it is located in the vicinity of the call target terminal and is common to the user of the calling terminal and the user of the call target terminal The user terminal 3 whose user is the user may be selected.

In the neighborhood terminal search operation using the co-notifier list, the neighborhood threshold setting unit 805 first sets the neighborhood threshold. Here, it is assumed that the neighborhood threshold is set to “70 m”, for example.
Next, when the emergency call unit 305 is sent to the telephone number “090-8765-4321” of the call target terminal but there is no response from the call target terminal, the emergency call unit 305 calls the nearby terminal search request unit 306. The telephone number “090-8765-4321” of the target terminal is notified. Whether there is no response from the call target terminal is, for example, whether there is a response from the call target terminal within a predetermined time after calling the telephone number “090-8765-4321” of the call target terminal. Can be determined based on

Here, when there is no response from the call target terminal, the neighboring terminal search request unit 306, as illustrated in FIG. 10, the telephone number “090-8765-4321” of the call target terminal and the phone book data of the calling terminal Are transmitted to the position management device 8 (step S40). The nearby terminal search request unit 306 may additionally transmit the telephone number “090-1234-5678” of the calling terminal.
The neighboring terminal search request receiving unit 806 of the location management device 8 receives each piece of information transmitted from the neighboring terminal search request unit 306 and notifies the neighboring terminal searching unit 807 of the received information.

The co-notifier list creating unit 810 requests the phone book data providing unit 310 of the call target terminal to provide the phone book data of the call target terminal (step S41).
Then, the phone book data providing unit 310 of the call target terminal notifies the co-notifier list creation unit 810 of the phone book data of the call target terminal (step S42).
The co-notifier list creation unit 810 uses the phone book data of the calling terminal as illustrated in FIG. 6 and the phone book data of the call target terminal as illustrated in FIG. The stored telephone numbers are extracted, and a co-notifier list as illustrated in FIG. 12 is created (step S43). The co-notifier list created by the co-notifier list creating unit 810 is notified to the nearby terminal searching unit 807 together with the telephone number “090-1234-5678” of the calling terminal and the telephone number “090-8765-4321” of the calling terminal. Is done.

Further, the nearby terminal search unit 807 searches the location information storage unit 801 as illustrated in FIG. 5 using the telephone number in the co-notifier list as illustrated in FIG. 12 as a key, and the distance from the call target terminal is determined. The user terminal 3 smaller than 70 m is extracted as the transfer destination terminal (step S44).
Here, a plurality of user terminals 3 having telephone numbers “090-1111-5555” and “090-3333-2222” are extracted as transfer destination terminals, and the neighboring terminal search unit 807 performs the processing as illustrated in FIG. A nearby terminal list is created (step S45).

The neighboring terminal list created by the neighboring terminal search unit 807 is notified to the user terminal 3 as the calling terminal by the neighboring terminal search result notification unit 808 (step S46).
The neighboring terminal search result receiving unit 307 of the transmitting terminal receives the neighboring terminal list from the location management device 8 and notifies the neighboring terminal display unit 308 of the received neighboring terminal list.
Then, the neighboring terminal display unit 308 displays the neighboring terminal list (step S47).

Thus, according to this example, when there is no response from the call target terminal, the user of the calling terminal is close to the call target terminal and is common to the user of the calling terminal and the user of the call target terminal. It is possible to obtain information about a transfer destination terminal whose user is an acquaintance. As a result, the user of the calling terminal can make a call to the transfer destination terminal, and can communicate the message to the user of the call target terminal via the user of the transfer destination terminal.

Note that, as described above, the user terminal 3 or the location management device 8 as a transmission terminal may automatically transfer and connect to the transfer destination terminal included in the co-notifier list.
(1.4.5) Neighboring terminal search operation using trusted transfer destination list Moreover, as a transfer destination terminal, for example, it is located in the vicinity of a call target terminal, and a user of a calling terminal and a user of a call target terminal The user terminal 3 whose common acquaintance is the user may be selected, and the user terminal 3 holding the telephone number of the call target terminal may be selected.

In the neighborhood terminal search operation using the trusted transfer destination list, the neighborhood threshold setting unit 805 first sets the neighborhood threshold. Here, it is assumed that the neighborhood threshold is set to “70 m”, for example.
Next, when the emergency call unit 305 is sent to the telephone number “090-8765-4321” of the call target terminal but there is no response from the call target terminal, the emergency call unit 305 calls the nearby terminal search request unit 306. The telephone number “090-8765-4321” of the target terminal is notified. Whether there is no response from the call target terminal is, for example, whether there is a response from the call target terminal within a predetermined time after calling the telephone number “090-8765-4321” of the call target terminal. Can be determined based on

Here, when there is no response from the call target terminal, the neighboring terminal search request unit 306, as illustrated in FIG. 14, the phone number “090-8765-4321” of the call target terminal and the phone book data of the calling terminal Are transmitted to the position management device 8 (step S50). The nearby terminal search request unit 306 may additionally transmit the telephone number “090-1234-5678” of the calling terminal.
The neighboring terminal search request receiving unit 806 of the location management device 8 receives each piece of information transmitted from the neighboring terminal search request unit 306 and notifies the neighboring terminal searching unit 807 of the received information.

The co-notifier list creating unit 810 requests the phone book data providing unit 310 of the call target terminal to provide the phone book data of the call target terminal (step S51).
Then, the phone book data providing unit 310 of the call target terminal notifies the co-notifier list creation unit 810 of the phone book data of the call target terminal (step S52).
The co-notifier list creation unit 810 uses the phone book data of the calling terminal as illustrated in FIG. 6 and the phone book data of the call target terminal as illustrated in FIG. The stored telephone numbers are extracted, and a co-notifier list as illustrated in FIG. 12 is created (step S53).

The co-notifier list created by the co-notifier list creating unit 810 is notified to the credit transfer destination list creating unit 811.
Next, the credit transfer destination list creating unit 811 holds the telephone number of the call target terminal for the user terminal 3 corresponding to each telephone number included in the co-notifier list notified from the co-notifier list creating unit 810. Whether or not there is is confirmed (step S54).

Then, the possessed telephone number confirmation unit 311 of each user terminal 3 included in the co-notifier list notifies the location management device 8 whether or not the own station 3 possesses the telephone number of the call target terminal (step S55). ).
At this time, as illustrated in FIG. 15, among the user terminals 3 in the co-notifier list, the telephone numbers are “090-1111-1111”, “090-1111-3333”, “090-1111-5555”, “ When the plurality of user terminals 3 that are “090-2222-5555” are notified of having the telephone number of the call target terminal, the credit transfer destination list creation unit 811 performs the credit transfer as illustrated in FIG. A transfer destination list is created, and the created trusted transfer destination list is notified to the nearby terminal search unit 807.

Further, the nearby terminal search unit 807 searches the location information storage unit 801 as illustrated in FIG. 5 using the telephone number in the trusted transfer destination list as illustrated in FIG. 16 as a key, and the distance from the call target terminal. Is extracted as a transfer destination terminal (step S56).
Here, the user terminal 3 whose telephone number is “090-1111-5555” is extracted as the transfer destination terminal, and the nearby terminal list as illustrated in FIG. 17 is created by the nearby terminal search unit 807 (step S57). ).

The neighboring terminal list created by the neighboring terminal search unit 807 is notified to the user terminal 3 as the calling terminal by the neighboring terminal search result notification unit 808 (step S58).
The neighboring terminal search result receiving unit 307 of the transmitting terminal receives the neighboring terminal list from the location management device 8 and notifies the neighboring terminal display unit 308 of the received neighboring terminal list.
Then, the neighboring terminal display unit 308 displays a neighboring terminal list (step S59).

Thus, according to this example, when there is no response from the call target terminal, the user of the calling terminal is close to the call target terminal and is common to the user of the calling terminal and the user of the call target terminal. Information about the user terminal 3 (forwarding destination terminal) having the telephone number of the call target terminal can be obtained. As a result, the user of the calling terminal can make a call to the transfer destination terminal, and can communicate the message to the user of the call target terminal via the user of the transfer destination terminal.

Note that, as described above, the user terminal 3 or the location management device 8 as a transmission terminal may automatically transfer and connect to the transfer destination terminals included in the trusted transfer destination list.
(1.4.6) Neighboring Terminal Search Operation Using Predicted Position Information In addition, when the call target terminal is “moving at high speed”, the position management device 8 is in the vicinity of the predicted position of the call target terminal after a predetermined time. The user terminal 3 located in the location may be extracted as the transfer destination terminal.

In the neighborhood terminal search operation using the predicted location information, first, location information registration processing is performed by the user terminal 3 as a call target terminal.
For example, when the user terminal 3 as a call target terminal communicates with the GPS 2 at time “2011/10/20 13:49” and acquires the position information “latitude: 34.9851437725849, longitude: 135.76621055603” of the local station 3, the call target The terminal acquires the acquired position information and time information, and the position information “latitude: 34.9845812014798, longitude: 135.759344100952” and time information “2011/10” that are stored in the transmitted position information storage unit file and transmitted to the position management device 8 last. / 20 13:47 "and the movement distance of the own station 3 is calculated.

The called terminal determines that the local station 3 is “moving” when the calculated moving distance is equal to or smaller than the high-speed moving threshold value and larger than the moving threshold value.
Then, the call target terminal transmits the information “no high-speed movement”, the telephone number of the own station 3, the position information of the own station 3, and the time information to the position management device 8.
Based on the information transmitted from the call target terminal, the location management device 8 confirms that the call target terminal is not “moving at high speed”, and stores the telephone number, location information, and time information of the call target terminal as location information. Registered in the unit 801.

When the registration is completed, the location management device 8 notifies the call target terminal of information indicating the completion of registration.
Further, when the call target terminal receives the information indicating the completion of registration, the call target terminal transmits the transmitted position information based on the acquired position information “latitude: 34.9851437725849, longitude: 135.76621055603” and time information “2011/10/20 13:49”. The contents of the information storage unit 302 are updated.

Further, for example, when the user terminal 3 as a call target terminal communicates with the GPS 2 at time “2011/10/20 13:51” and acquires the position information “latitude: 34.9860227821978, longitude: 135.777068138122” of the local station 3 The call target terminal acquires the acquired position information and time information, and the position information “latitude: 34.9851437725849, longitude: 135.76621055603” and time information “2011” transmitted to the position management device 8 lastly stored in the transmitted position information storage unit file. / 10/20 13:49 ”and the movement distance of the own station 3 is calculated.

When the calculated movement distance is larger than the high speed movement threshold, the call target terminal determines that the own station 3 is “moving at high speed”.
Then, as illustrated in FIG. 18, the call target terminal transmits the information “with high speed movement”, the telephone number of the own station 3, the position information of the own station 3, and the time information to the position management device 8 (step S60). ).

The location management device 8 confirms that the call target terminal is “moving at high speed” based on each information transmitted from the call target terminal, and obtains the telephone number, location information, and time information of the call target terminal as location information. The prediction unit 803 is notified.
The location information prediction unit 803 searches the location information storage unit 801 using the telephone number “090-8765-4321” of the call target terminal as a key, and registers the location information “latitude: 34.9851437725849, longitude: 135.76621055603” of the call target terminal. Get the time information “2011/10/20 13:49”.

Further, the position information prediction unit 803 compares the acquired information with the position information “latitude: 34.9860227821978, longitude: 135.777068138122” and time information “2011/10/20 13:51” received from the call target terminal. Thus, the moving speed and moving direction of the call target terminal are calculated.
Then, as illustrated in FIG. 19, the position information prediction unit 803, based on the received position information and time information, and the calculated movement speed and movement direction of the call target terminal, A later position (eg, 4 hours later) is predicted. Here, it is assumed that the predicted position of the call target terminal is “latitude: 35.57868573, longitude: 139.64245051”, and the time after a predetermined time is predicted to be “2011/10/20 17:51”.

The location management device 8 registers the predicted location information and time information in the location information storage unit 801 in association with the telephone number of the call target terminal (step S61), and when registration is completed, information indicating the completion of registration. Is notified to the call target terminal.
Further, when the call target terminal receives the information indicating the completion of registration, the call target terminal transmits the transmitted position information based on the acquired position information “latitude: 34.9860227821978, longitude: 135.777068138122” and time information “2011/10/20 13:51”. The contents of the information storage unit 302 are updated.

Then, the neighborhood threshold setting unit 805 sets the neighborhood threshold. Here, it is assumed that the neighborhood threshold is set to “70 m”, for example.
Next, when the emergency call unit 305 is sent to the telephone number “090-8765-4321” of the call target terminal but there is no response from the call target terminal, the emergency call unit 305 calls the nearby terminal search request unit 306. The telephone number “090-8765-4321” of the target terminal is notified. Whether there is no response from the call target terminal is, for example, whether there is a response from the call target terminal within a predetermined time after calling the telephone number “090-8765-4321” of the call target terminal. Can be determined based on

Here, when there is no response from the call target terminal, the neighboring terminal search request unit 306, as illustrated in FIG. 18, the telephone number “090-8765-4321” of the call target terminal and the phone book data of the calling terminal Are transmitted to the position management device 8 (step S62). The nearby terminal search request unit 306 may additionally transmit the telephone number “090-1234-5678” of the calling terminal.
The neighboring terminal search request receiving unit 806 of the location management device 8 receives each piece of information transmitted from the neighboring terminal search request unit 306 and notifies the neighboring terminal searching unit 807 of the received information.

The nearby terminal search unit 807 acquires the neighborhood threshold “70 m” from the neighborhood threshold setting unit 805.
Further, the neighboring terminal search unit 807 searches the location information storage unit 801 using the telephone number “090-8765-4321” of the call target terminal as a key, and as illustrated in FIG. Get time information. Here, the neighboring terminal search unit 807 uses the position information “latitude: 35.57868573, longitude: 139.64245051” and time information “2011/10/20 17:51” as position information and time information after a predetermined time of the call target terminal. get.

Further, the neighboring terminal search unit 807 searches the location information storage unit 801 using each telephone number in the phone book data of the calling terminal as illustrated in FIG. 6 as a key, and predicts the predicted position after a predetermined time of the call target terminal. The user terminal 3 having a distance less than “70 m” which is the neighborhood threshold is extracted as the transfer destination terminal (step S63).
Then, the user terminal 3 having the extracted telephone number is extracted as a transfer destination terminal, and the neighboring terminal search unit 807 creates a neighboring terminal list based on the extraction result (step S64). If there is no transfer destination terminal located within 70 m from the predicted position of the call target terminal, the neighborhood threshold setting unit 805 changes the neighborhood threshold to a value greater than 70 m, and the above extraction operation is performed again. Also good.

The neighboring terminal list created by the neighboring terminal search unit 807 is notified to the user terminal 3 as the calling terminal by the neighboring terminal search result notification unit 808 (step S65).
The neighboring terminal search result receiving unit 307 of the transmitting terminal receives the neighboring terminal list from the location management device 8 and notifies the neighboring terminal display unit 308 of the received neighboring terminal list.
Then, the neighboring terminal display unit 308 displays the neighboring terminal list (step S66).

As described above, according to this example, when there is no response from the call target terminal, the user of the calling terminal can transfer the transfer destination terminal located in the vicinity of the call target terminal after the movement after the call target terminal. Information can be obtained. Thereby, even if the call target terminal is moving at high speed, the user of the call terminal can make a call to the transfer destination terminal located at the destination of the call target terminal, and the user of the transfer destination terminal can This makes it possible to convey a message to the user of the call target terminal.

Note that the position management device 8 predicts the position of the call target terminal, for example, map data including a road network, a railway network, an air network, etc., traffic information such as road congestion, timetable data about the railway, and an aircraft operation table. Data or the like may be used. Further, the location management device 8 estimates the means of transportation of the user of the call target terminal based on the moving speed and direction of the call target terminal, and uses the estimation result and the various data described above to A position after a predetermined time may be predicted.

(1.4.7) Example of Overall Operation of Communication System 1 Here, an example of the overall operation of the communication system 1 will be described with reference to FIGS.
First, as illustrated in FIG. 21, the movement detection unit 303 of the user terminal 3 updates the position information of the own station 3 regularly or irregularly using the GPS 2 (step S70).

Next, the movement detection unit 303 stores, for example, the position information and time information last transmitted to the position management device 8 and the current position information and time updated in step S70, which are stored in the transmitted position information storage unit 302. The moving distance of the own station 3 is calculated by comparing with the information (step S71).
Further, for example, the movement detection unit 303 determines whether or not the calculated movement distance is larger than the high-speed movement threshold (step S72), and when the calculated movement distance is larger than the high-speed movement threshold (Yes route in step S72). ), The movement detection unit 303 determines that the own station 3 is “moving at high speed”, and manages the information of “with high speed movement”, the telephone number of the own station 3, the position information of the own station 3, and the time information. It transmits to the apparatus 8 (step S73).

On the other hand, when the calculated movement distance is equal to or less than the high speed movement threshold (No route in step S72), the movement detection unit 303 determines whether the calculated movement distance is larger than the movement threshold (step S74). When the calculated movement distance is larger than the movement threshold (Yes route in step S74), the movement detection unit 303 obtains the information “no high-speed movement”, the telephone number of the own station 3, the position information of the own station 3, and the time information. The data is transmitted to the position management device 8 (step S75).

When the calculated movement distance is equal to or less than the movement threshold (No route in step S74), the movement detection unit 303 ends the process.
The location information receiving unit 802 of the location management device 8 receives each piece of information transmitted from the user terminal 3 in step S73 or S75, and whether the user terminal 3 is “moving at high speed” based on the received information. It is determined whether or not (step S76).

When it is determined that the user terminal 3 is “moving at high speed” (Yes route in step S76), the position information prediction unit 803 stores the previously registered position information of the user terminal 3 based on the position information storage unit 801. Obtain (step S77).
Then, the position information prediction unit 803 detects the moving speed and moving direction of the user terminal 3 based on the acquired position information of the user terminal 3 previously registered and each information received in step S73 (step S78). ) Predict the position of the user terminal 3 after a predetermined time (step S79).

Further, the position information prediction unit 803 notifies the position information registration unit 804 of the telephone number of the user terminal 3, the predicted position information (predicted position information), and time information after a predetermined time (predicted time information) (step S80). The position information registration unit 804 registers each notified information in the position information storage unit 801 (step S81).
On the other hand, when it is determined that the user terminal 3 is not “moving at high speed” (No route in step S76), the location information receiving unit 802 notifies the location information registration unit 804 of each piece of information received in step S75 (step S76). S82), the location information registration unit 804 registers each notified information in the location information storage unit 801 (step S83).

Then, when the registration process of step S81 or S83 is completed, the position information registration unit 804 notifies the user terminal 3 that the registration process has been completed (step S84).
When the location information transmission unit 304 of the user terminal 3 receives the registration processing completion notification, the location information transmission unit 304 stores the location information updated in step S70 in the transmitted location information storage unit 302.
Here, as illustrated in FIG. 22, when an emergency call unit 305 of the user terminal 3 as a call terminal is transmitted to the call target terminal (step S <b> 85), but there is no response from the call target terminal, the emergency call unit 305 notifies the nearby terminal search request unit 306 of the telephone number of the call target terminal (step S86).

The nearby terminal search request unit 306 reads the phone book data of the calling terminal from the phone book data storage unit 306, and manages the location of the telephone number of the call target terminal notified in step S86 and the read phone book data of the calling terminal. It transmits to the apparatus 8 (step S87).
When the neighboring terminal search request receiving unit 806 of the location management device 8 receives the telephone number of the call target terminal and the telephone directory data of the calling terminal from the user terminal 3 as the calling terminal, the neighboring terminal search unit 807 and the neighboring terminal search In cooperation with the result notification unit 808 and the like, a nearby terminal list is created (step S88).

Here, the process of step S88 will be described with reference to FIG.
As illustrated in FIG. 23, first, the nearby terminal search request receiving unit 806 determines whether or not the mode is to use the co-notifier list (step S102).
When it is determined that the mode does not use the co-notifier list (No route in step S102), the nearby terminal search request receiving unit 806 notifies the nearby terminal searching unit 807 of the data received from the calling terminal.

On the other hand, when it is determined that the mode is to use the co-notifier list (Yes route in step S102), the nearby terminal search request receiving unit 806 notifies the co-notifier list creating unit 810 of the data received from the calling terminal ( Step S103).
The co-notifier list creation unit 810 further notifies the telephone book data acquisition unit 812 of the reception data notified from the nearby terminal search request reception unit 806 (step S104), and notifies the telephone directory data acquisition unit 812 of the telephone of the call target terminal. The phone book data of the call target terminal is acquired from the book data providing unit 310 (step S105) and notified (step S106).

Then, the co-notifier list creating unit 810 executes each phone call based on the phone book data of the calling terminal received by the nearby terminal search request receiving unit 806 and the phone book data of the call target terminal acquired by the phone book data acquiring unit 812. A telephone number registered in the book data is extracted, and a co-notifier list including the extraction result is created (step S107).
Here, the co-notifier list creation unit 810 determines whether or not the mode is to use the credit transfer destination list (step S108).

When it is determined that the mode is not to use the credit transfer destination list (No route of step S108), the co-notifier list creation unit 810 notifies the neighbor terminal search unit 807 of the co-notifier list created in step S107 (step S107). S110).
On the other hand, when it is determined that the mode is to use the credit transfer destination list (Yes route in step S108), the co-notifier list creation unit 810 sends the co-notifier list created in step S107 to the credit transfer destination list creation unit 811. Notice.

Then, the credit transfer destination list creation unit 811 confirms whether or not the possessed telephone number confirmation unit 311 of the user terminal 3 as the transfer destination terminal included in the co-notifier list has the telephone number of the call target terminal. (Step S109).
Next, the credit transfer destination list creation unit 811 creates the credit transfer destination list based on the telephone number of the user terminal 3 that holds the telephone number of the call target terminal among the user terminals 3 included in the co-notifier list. Create (step S111).

The credit transfer destination list created by the credit transfer destination list creation unit 811 is notified to the nearby terminal search unit 807 (step S112).
Then, the nearby terminal search unit 807 reads the neighborhood threshold set by the neighborhood threshold setting unit 805 (step S113), acquires the location information of the call target terminal from the location information storage unit 801 (step S114), and each mode. Accordingly, the transfer destination terminal is searched and determined (step S115).

That is, if the neighboring terminal search unit 807 is in a mode that does not use the co-notifier list and the credit transfer destination list, the telephone number of the call target terminal received by the neighboring terminal search request receiving unit 806 and the telephone book held by the calling terminal Based on the data, a search is made from the location information storage unit 801 using the user terminal 3 registered in the telephone directory data and having a distance from the call target terminal smaller than the above-described neighborhood threshold as a transfer destination terminal. Create a neighbor list containing the results.

The neighboring terminal search unit 807 determines whether or not it is the transfer call proxy operation mode (step S116), and if it is determined that it is the transfer call proxy operation mode (Yes route of step S116), the neighboring terminal search unit 807 Then, the generated neighboring terminal list is notified to the transfer transmission unit 809 (step S89).
On the other hand, if it is determined that the mode is not the forward call proxy operation mode (No route in step S116), the neighboring terminal search unit 807 sends the created neighboring terminal list to the neighboring terminal search result notification unit 808 (step S117). The neighboring terminal search result receiving unit 307 of the calling terminal is notified (step S90).

Returning to FIG. 22 again, the neighboring terminal search result receiving unit 306 of the calling terminal determines whether or not it is a mode in which the automatic transfer function is used (step S91).
When it is determined that the mode does not use the automatic transfer function (No route in step S91), the nearby terminal display unit 308 checks whether there is no response from the call target terminal (step S92), and there is no response (No route in step S92), the neighboring terminal list is displayed (step S93). When there is a response from the call target terminal (Yes route in step S92), the neighboring terminal display unit 308 ends the process without displaying the neighboring terminal list.

On the other hand, when it is determined that the mode is to use the automatic transfer function (Yes route in step S91), the transfer transmission unit 309 confirms whether there is no response from the call target terminal (step S94), and there is no response. In this case (No route in step S94), it is confirmed whether there is a transfer destination candidate in the neighboring terminal list (step S95).
If there is a transfer destination candidate in the nearby terminal list (Yes route in step S95), the transfer transmitting unit 309 transmits to the transfer destination terminal included in the nearby terminal list (step S96).

Further, the transfer transmission unit 309 determines whether or not there is a response from the transmission destination terminal of the transmission destination (step S97), and when there is no response (No route of step S97), repeats the processing of steps S95 to S97.
In addition, when there is a response from the destination transfer destination terminal (Yes route in step S97), when there is a response from the call target terminal (Yes route in step S94), or there is no transfer destination candidate in the neighboring terminal list. In the case (No route of step S95), the transfer transmission part 309 complete | finishes a process.

On the other hand, if it is in the transfer call proxy operation mode, the transfer call sending unit 809 of the location management device 8 checks whether there is no response from the call target terminal (step S98), and if there is no response (in step S98) No route), it is confirmed whether there is a transfer destination candidate in the neighboring terminal list (step S99).
When there is a transfer destination candidate in the nearby terminal list (Yes route in step S99), the transfer transmission unit 809 transmits to the transfer destination terminal included in the nearby terminal list (step S100).

Further, the transfer transmission unit 809 determines whether or not there is a response from the transfer destination terminal of the transmission destination (step S101), and if there is no response (No route of step S101), repeats the processing of steps S98 to S101.
In addition, when there is a response from the destination transfer destination terminal (Yes route of step S101), when there is a response from the call target terminal (Yes route of step S98), there is no transfer destination candidate in the neighboring terminal list. In the case (No route of step S99), the transfer transmission part 809 complete | finishes a process.

As described above, according to this example, since the user terminal 3 that is at least an acquaintance of the user of the calling terminal and is located in the vicinity of the call target terminal can be determined as the transfer destination, Can be determined more efficiently.
For example, when there is no response from the call target terminal, the calling terminal can make a call to the transfer destination terminal determined by the location management device 8. As a result, the user of the calling terminal can contact the user of the call target terminal from the user of the transfer destination terminal. As a result, it is possible to quickly and reliably transmit information from the user of the transmission terminal to the user of the call target terminal.

[2] Example of Hardware Configuration FIG. 24 shows an example of the hardware configuration of the user terminal 3.
As illustrated in FIG. 24, the user terminal 3 includes, for example, a processor 31, an input / output interface (input / output IF) 32, a memory 33, a storage device 34, and a wireless interface (wireless IF) 35. .

The processor 31 is a device that processes data, and includes, for example, a central processing unit (CPU), a digital signal processor (DSP), and the like.
The input / output IF 32 is a device that performs input and output, and includes, for example, operation buttons and a microphone as an input interface, and includes a display, a speaker, and the like as an output interface.

The memory 33 is a device that stores data, and includes, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.
The storage device 34 is a device that stores data, and includes, for example, a magnetic disk, an optical disk, a flash memory, and the like.
The wireless IF 35 is an interface device for performing wireless communication with a wireless base station such as BS4 or eNB7.

The correspondence relationship between each configuration of the user terminal 3 illustrated in FIG. 2 and each configuration of the user terminal 3 illustrated in FIG. 24 is, for example, as follows.
The processor 31, the memory 33, and the wireless IF 35 include, for example, a movement detection unit 303, a position information transmission unit 304, a nearby terminal search request unit 306, a nearby terminal search result reception unit 307, a transfer transmission unit 309, a telephone directory data provision unit 310, and the like. This corresponds to the possessed telephone number confirmation unit 311.

The processor 31, the memory 33, and the input / output IF 32 correspond to, for example, the emergency transmission unit 305 and the nearby terminal display unit 308, and the storage device 34 includes, for example, the telephone directory data storage unit 301 and the transmitted location information storage unit 302. Corresponding to
Further, FIG. 25 shows an example of the hardware configuration of the location management device 8.
As shown in FIG. 25, the location management device 8 illustratively includes a processor 81, an input / output interface (input / output IF) 82, a memory 83, a storage device 84, and a wired interface (wireless IF) 85. I have it.

The processor 81 is a device that processes data, and includes, for example, a CPU and a DSP.
The input / output IF 82 is a device that performs input and output, and includes, for example, operation buttons and a microphone as an input interface, and includes a display, a speaker, and the like as an output interface.
The memory 83 is a device that stores data, and includes, for example, a ROM, a RAM, and the like.

The storage device 84 is a device that stores data, and includes, for example, a magnetic disk, an optical disk, a flash memory, and the like.
The wired IF 85 is an interface device for communicating with the core network 9 and the subscriber exchange 6.
The correspondence relationship between each configuration of the location management device 8 illustrated in FIG. 3 and each configuration of the location management device 8 illustrated in FIG. 25 is, for example, as follows.

The processor 81, the memory 83, and the wired IF 85 are, for example, a location information receiving unit 802, a nearby terminal search request receiving unit 806, a nearby terminal search result notifying unit 808, a transfer sending unit 809, a credit transfer destination list creating unit 811, and telephone directory data This corresponds to the acquisition unit 812.
The processor 81 and the memory 83 correspond to, for example, the position information prediction unit 803, the position information registration unit 804, the nearby terminal search unit 807, and the co-notifier list creation unit 810.

Furthermore, the processor 81, the memory 83, the input / output IF 82, and the storage device 84 correspond to, for example, the neighborhood threshold setting unit 805, and the storage device 84 corresponds to, for example, the position information storage unit 801.
[3] Others The configurations and functions of the user terminal 3 and the location management device 8 in the above-described embodiment may be selected as necessary, or may be used in appropriate combination. In other words, the above-described configurations and functions may be selected or used in appropriate combination so that the functions of the present invention can be exhibited.

For example, in the above-described example, a telephone number is used as the identification information for identifying the user terminal 3, but as the identification information, for example, a terminal ID unique to the user terminal 3, a mail address, or a combination thereof is used. Also good.

1 Communication system 2 GPS
3,3-1,3-2 User terminal 4 BS
5 RNC
6 Subscriber switch 7 eNB
8 Location management device 9 Core network 31 Processor 32 Input / output IF
33 Memory 34 Storage device 35 Wireless IF
81 processor 82 I / O IF
83 Memory 84 Storage device 85 Wired IF
301 Phone Book Data Storage Unit 302 Transmitted Location Information Storage Unit 303 Movement Detection Unit 304 Location Information Transmission Unit 305 Emergency Calling Unit 306 Neighboring Terminal Search Request Unit 307 Neighboring Terminal Search Result Receiving Unit 308 Neighboring Terminal Display Unit 309 Transfer Sending Unit 310 Telephone Book data providing unit 311 Owned phone number confirmation unit 801 Location information storage unit 802 Location information reception unit 803 Location information prediction unit 804 Location information registration unit 805 Neighborhood threshold setting unit 806 Neighborhood terminal search request reception unit 807 Neighborhood terminal search unit 808 Neighborhood terminal Search result notification unit 809 Forwarding transmission unit 810 Co-notifier list creation unit 811 Trusted transfer destination list creation unit 812 Phonebook data acquisition unit

Claims

In a communication system comprising a plurality of user terminals that perform wireless communication and a position management device that manages the positions of the plurality of user terminals,
At least one user terminal among the plurality of user terminals is
A terminal-side storage unit that stores identification information for identifying each user terminal;
If there is no response from the other user terminal after transmitting from the own station to the other user terminal, at least the identification information of the other user terminal and the identification information stored in the terminal-side storage unit are With a terminal-side transmitter that transmits to the management device,
The location management device is
An apparatus-side storage unit that stores position information of the plurality of user terminals in association with the identification information;
An apparatus-side receiving unit that receives at least the identification information of the other user terminal and the identification information stored in the terminal-side storage unit, transmitted from the terminal-side transmission unit;
Based on the content of the device-side storage unit, the identification information of the other user terminal received by the device-side reception unit, and the identification information stored in the terminal-side storage unit, the terminal-side storage unit A device-side processing unit that determines a user terminal whose distance from the other user terminal is smaller than a threshold among the user terminals corresponding to the identification information stored in
A communication system characterized by the above.
The device-side receiving unit is
Further receiving identification information stored in the terminal side storage unit of the other user terminal,
The apparatus-side processing unit is
The contents of the device-side storage unit, the identification information of the other user terminal received by the device-side receiving unit, the identification information stored in the terminal-side storage unit of the user terminal that performed the transmission, and the other Is stored in both the terminal-side storage unit of the user terminal that made the call and the terminal-side storage unit of the other user terminal based on the identification information stored in the terminal-side storage unit of the user terminal A user terminal having a distance from the other user terminal smaller than the threshold among the user terminals corresponding to the identification information being determined is determined as the transmission destination of the call;
The communication system according to claim 1, wherein:
The location management device is
For the user terminal determined as the call forwarding destination, further comprising a confirmation unit for confirming whether or not the identification information of the other user terminal is held,
The apparatus-side processing unit is
Determining the user terminal confirmed as holding the identification information of the other user terminal by the confirmation unit as the forwarding destination of the call;
The communication system according to claim 2, wherein:
The location management device is
Based on the position information of the other user terminal at a plurality of times, further comprising a prediction unit for predicting the position after a predetermined time of the other user terminal,
The apparatus-side processing unit is
Among user terminals corresponding to the identification information stored in the terminal-side storage unit, a user terminal whose distance from the position after the predetermined time of the other user terminal is smaller than the threshold is transferred to the transmission destination To decide,
The communication system according to claim 1, wherein:
The location management device is
The apparatus further includes a device-side transmitter that transmits the information regarding the determined transfer destination to the user terminal that has made the call,
The user terminal that made the call
A terminal-side receiving unit that receives the information;
A terminal-side display unit that displays the received information.
The communication system according to any one of claims 1 to 4, characterized in that:
The location management device is
The apparatus further includes a device-side transmitter that transmits the information regarding the determined transfer destination to the user terminal that has made the call,
The user terminal that made the call
A terminal-side receiving unit that receives the information;
Based on the received information, further comprising a terminal side processing unit for transferring the outgoing call,
The communication system according to any one of claims 1 to 4, characterized in that:
The apparatus-side processing unit is
The outgoing call is forwarded to the determined forwarding destination.
The communication system according to any one of claims 1 to 4, characterized in that:
At least one user terminal among the plurality of user terminals of a communication system including a plurality of user terminals that perform wireless communication and a position management device that manages positions of the plurality of user terminals,
A storage unit for storing identification information for identifying each user terminal;
If there is no response from the other user terminal after transmitting from the own station to the other user terminal, at least the identification information of the other user terminal and the identification information stored in the terminal-side storage unit are Provided with a transmission unit for transmission to the management device,
A user terminal characterized by that.
The position management device of a communication system comprising a plurality of user terminals that perform wireless communication and a position management device that manages the positions of the plurality of user terminals,
A storage unit for storing position information of the plurality of user terminals in association with identification information for identifying each user terminal;
Receiving at least the identification information of the other user terminal and the identification information stored in the user terminal that has made the transmission, transmitted from the user terminal that has transmitted to the other user terminal among the plurality of user terminals. A receiving unit to
The user terminal that made the call based on the contents of the storage unit, the identification information of the other user terminal received by the receiving unit, and the identification information stored in the user terminal that made the call A processing unit that determines a user terminal whose distance to the other user terminal is smaller than a threshold among the user terminals corresponding to the identification information stored in
A location management device.
A communication control method of a communication system comprising a plurality of user terminals that perform wireless communication and a position management device that manages the positions of the plurality of user terminals,
At least one user terminal among the plurality of user terminals is
When there is no response from the other user terminal after transmitting from the own station to another user terminal, at least identification information of the other user terminal and identification information for identifying each user terminal stored in the own station To the location management device,
The location management device is
Storing positional information of the plurality of user terminals in association with the identification information;
Receiving at least the identification information of the other user terminal and the identification information for identifying each user terminal stored in the user terminal that performed the transmission, transmitted from the user terminal that performed the transmission;
Based on the stored contents, the identification information of the other user terminal, and the identification information stored in the user terminal that performed the transmission, the identification information stored in the user terminal that performed the transmission Among the corresponding user terminals, determine a user terminal whose distance from the other user terminal is smaller than a threshold as the transfer destination of the call,
A communication control method.