JP2014099718A - Mobile terminal device and near distance search method using mobile terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a near distance search method that uses a mobile terminal device and that is able to simply confirm whether there already is a person to meet in the vicinity of oneself at a meeting place without frequently sending emails or making calls.SOLUTION: A mobile terminal device generates a transmission key by use of information on its own terminal and generates an authentication key by use of information on an opposite terminal (ST105). It transmits the transmission key of the own terminal by near field radio communication effective only within a prescribed distance (ST106). It compares reception data received by near field radio communication with the authentication key (ST108). If the received reception data corresponds to the authentication key, it authenticates presence of the opposite terminal (ST109).

Description

  The present invention relates to a mobile terminal device such as a mobile phone and a PHS, and more particularly to a position search method using proximity wireless communication of these devices.

With GPS and sensor networks, it becomes possible to search for the location of mobile terminal devices such as mobile phones (Patent Document 1), and when using a navigation system using GPS (Patent Document 2), when waiting It is easy to get to your destination.
However, even if the destination is reached, it cannot be determined whether the meeting partner is at the place or not.
Therefore, exchanges such as “I have already arrived” or “Where are you?” Are exchanged by e-mail or telephone, which can be troublesome, especially when waiting for multiple people.

  Here, Patent Document 3 discloses a notification system for detecting whether or not a target device is at a short distance using bluetooth (registered trademark).

Japanese Patent Laid-Open No. 2002-271853 JP 2002-056490 A JP 2002-183866 JP

The configuration of Patent Document 3 is based on the premise that communication is established with each other using an identifier of each Bluetooth device.
A state in which communication is established with each other is set as an anti-theft setting, and in this state, messages are exchanged at predetermined time intervals to confirm that the devices are within a predetermined communicable distance.
However, it is impossible to establish short-range communication without knowing whether the meeting partner is at the place or not, and it is a patent document as a configuration for confirming whether the meeting partner is within a predetermined distance. It is impossible to adopt the configuration of 3.

The portable terminal device of the present invention is
A mobile terminal device that detects that a partner terminal is within a predetermined distance by performing near field communication between the terminal and the partner terminal,
Short-range wireless communication means for transmitting and receiving information wirelessly within a predetermined distance;
A transmission key generation unit that generates a transmission key using information of the terminal itself;
An authentication key generation unit that generates an authentication key using information of the counterpart terminal;
A partner search processing unit that transmits the transmission key of the terminal itself and authenticates the partner terminal by comparing the received data with the authentication key.

The short distance search method using the mobile terminal device of the present invention is:
A short-range search method for a mobile terminal device that detects that a partner terminal is within a predetermined distance by performing short-range communication between the own terminal and the partner terminal,
Generate a transmission key using the information of your terminal,
Generate an authentication key using the information of the other terminal,
Sending the transmission key of the terminal itself using short-range wireless communication effective only within a predetermined distance,
The received data received using short-range wireless communication is compared with the authentication key,
When the received data received corresponds to the authentication key, the existence of the counterpart terminal is authenticated.

The figure which shows the structure of 1st Embodiment. The figure which shows own terminal specific information. The figure which shows other terminal specific information. The figure which shows the information stored in a search other party holding | maintenance area | region. The flowchart which shows the operation | movement procedure of an other party search process. The figure which shows a mode that the other party search is carried out.

Embodiments of the present invention will be illustrated and described with reference to reference numerals attached to respective elements in the drawings.
(First embodiment)
FIG. 1 is a diagram showing a first embodiment according to the mobile terminal device of the present invention.
In the first embodiment, a case where the mobile terminal device is a mobile phone will be described as an example.

  The mobile terminal device 10 includes a wireless communication unit 11. The wireless communication unit 11 includes a portable wireless communication unit 111 that wirelessly communicates with a base station (not shown) via an antenna, and a short-range communication unit 112 that communicates at a short distance. The mobile terminal device 10 includes a transmitting unit 113 and a receiving unit 114, and wireless communication with a communication partner is possible by wireless communication by the mobile wireless communication unit 111. The short-range communication unit 112 is a short-range wireless communication unit having a communication distance of about 10 m to 100 m, such as infrared communication, BlueTooth (registered trademark), and wireless LAN. Further, the mobile terminal device 10 of the present embodiment detects whether or not the meeting partner is nearby using short-range wireless communication, which will be described later.

  The mobile terminal device 10 further includes a storage unit 18, a temporary storage unit 19, a common key generation unit 13, a display unit 14, a ringing unit 15, an input unit 16, a partner search processing unit 12, and a control unit. 17 and.

  The storage unit 18 stores various types of information. In the present embodiment, in particular, the storage unit 18 includes a unique information storage area 181 and an other terminal information storage area 182. The unique information storage area 181 stores own terminal information. For example, as shown in FIG. 2, the self-user name (here, the self-user name is Dog), the local phone number (090-XXXX-XXXX), etc. It holds own terminal unique information 21 that can uniquely identify the terminal.

  The other terminal information storage area 182 holds unique information of other terminals. For example, information is exchanged with a plurality of friends, and the information is stored as other terminal information. If information such as name and phone number is exchanged with three friends Ant, Bee and Cat, the information as shown in FIG. 3 is stored in the other terminal information storage area 182 as other terminal specific information 31. become.

  Furthermore, the user who waits makes an arrangement for the common phrase 32 as a preparation stage. As the common phrase 32, an arbitrary character string is used, and the same phrase is set among the users who are waiting, and is held in association with the other terminal unique information 31 in the other terminal information area 182. For example, assume that “aaaa” is set as the common phrase 32 and exchanged with Ant. Then, the common phrase “aaaa” with Ant is stored in association with Ant's other terminal specific information 31 (name and phone number).

  The common key generation unit 13 is a processing unit that generates a transmission key 43 and an authentication key 44 using the own terminal unique information 21, the other terminal unique information 31, and the common phrase 32. The transmission key 43 and the authentication key 44 are generated by the following formula using the one-way hash functions H1 and H2.

(Transmission key) = H1 {(Local terminal unique information) * (Common phrase)}

(Authentication key) = H2 [H1 {(other terminal unique information) * (common phrase)} * (own terminal unique information)]

  The transmission key 43 and the authentication key 44 generated in this way are stored in the temporary storage unit 19.

  Here, the common key generation unit 13 constitutes a transmission key generation unit and an authentication key generation unit.

  The temporary storage unit 19 is a storage area used as a temporary work area, and is used when performing partner search processing. The temporary storage unit 19 is provided with a search partner holding area 191 in which the transmission key 43 and the authentication key 44 are stored.

  The display unit 14 and the ringing unit 15 are configured by an LCD, a speaker, a vibrator, and the like, and notify the user of information by display, sound, or vibration.

  The partner search processing unit 12 performs data communication with the mobile terminal device of the queuing partner via the short-range communication unit 112, and confirms the presence or absence of the queuing partner. At this time, the partner search processing unit 12 transmits the transmission key 43 of the own terminal device and attempts to receive the transmission key from the partner terminal. When the user performs a predetermined operation from the input unit 16, the partner search processing application is activated or terminated.

  The transmission key 43 is transmitted and received as a Beacon SSID (Service Set Identifier) so that communication is established only with a specific meeting partner. When receiving the Beacon, the partner search processing unit 12 compares the converted key of the received Beacon with the authentication key 44 prepared in advance in the search partner holding area 191. If the authentication key 44 corresponding to the received Beacon exists, it is assumed that the counterpart terminal has been detected. The detection result is notified to the user from the display unit 14 and the ringing unit 15.

Next, the operation of this embodiment will be described.
FIG. 5 is a flowchart showing the operation procedure of the partner search process.
As a situation for searching for a partner, for example, it is assumed that an appointment is made with a partner and the person goes out to the promised place on the promised date and time. At this time, there may be many people around the station or near the entrance of the amusement park, or it may be behind the building, making it difficult to notice each other even if the meeting partner is nearby.

  In such a case, you may simply exchange e-mails such as “Are you already?” Or “Where are you?” Or make a direct phone call, but it is an unexpected thing to happen every time. There is also. It is useless to make frequent calls and emails to someone who has not yet arrived at the meeting place. Therefore, in the present embodiment, a means for easily confirming whether or not there is already a partner near you at the meeting place is provided.

  First, as a preparation stage (ST101), the unique information of the terminal device is exchanged with the meeting partner and the common phrase 32 is determined. The common phrase 32 is associated with the other terminal unique information 31 and stored in the other terminal information area 182 (ST101). It is even better to make an appointment with the meeting partner to activate the partner search application when arriving at the meeting place.

  With this preparation, the user goes to a meeting place with the other party (ST102). Then, when you arrive at the meeting place, look around and if you can't see the meeting partner, search for whether the other party is around. Therefore, the partner search application is activated (ST103).

  Subsequently, the user operates the input unit 16 while looking at the display unit 14 to select a meeting partner to be searched (ST104). Then, the other terminal unique information 31 and the common phrase 32 of the selected partner are read from the other terminal information area 182 and copied to the search partner holding area 191 of the temporary storage unit 19.

  After copying, the transmission key 43 and the authentication key 44 are generated using the own terminal unique information 21, the other terminal unique information 31 and the common phrase 32 (ST105). As described above, the transmission key 43 and the authentication key 44 are generated by the common key generation unit 13 using the own terminal specific information 21, the other terminal specific information 31, and the common phrase 32. The transmission key 43 and the authentication key 44 are stored in the search partner holding area 191.

  Subsequently, the partner search processing unit 12 enters a repetition process of a transmission process (ST106) and a reception process (ST107). In the transmission process (ST106), the transmission key 43 is transmitted as the SSID of the Beacon Frame. In the reception process (ST107), the other party's transmission key is received from the SSID on the received Beacon Frame.

  A reception process is performed (ST107), and if reception is successful, the received data is checked against the authentication key 44 (ST108). Specifically, if the following condition is true for the received data, it is considered that the transmission data from the selected partner has been received (ST109).

  H2 {(received data) * (own terminal unique information)} == authentication key

  If the above conditions are met (ST108: YES), the other party is in a position where short-distance communication is possible, the other party is sending a send key, and you are receiving the other party's send key become. Therefore, the other party is in a range where short-distance communication is possible. For example, as shown in FIG. 6, the partner terminal 52 is within the reach of Beacon, and this partner terminal 52 can be detected. In this case, the fact that the partner is at a short distance is displayed on the display unit 14 to notify the user (ST111).

  On the other hand, when the partner cannot be detected (ST108: NO), the partner detection has failed (ST110). In this case, the opponent has not yet come near the meeting place. For example, as shown in FIG. 6, the partner terminal 53 outside the reach distance of Beacon is not a detectable target. The display unit 14 informs the user that the other party is not nearby (ST111).

  The process returns to the transmission process and repeats until the end key is pressed (ST112). The user continues to activate the partner search application until the waiting partner is detected, and ends the partner search application when the partner is successfully detected. After that, you know that the other person is nearby, and that you probably know that you are nearby, so you can look around and check each other, email or call the other person. Good.

  As described above, according to the present embodiment, it is possible to easily confirm whether or not there is already a partner near you at the meeting place without frequently sending e-mails and telephone calls.

  The mobile terminal device may be a PHS, a mobile game machine, or the like in addition to the mobile phone.

Although the transmission key is H1 {(own terminal unique information) * (common phrase)}, the transmission key may be generated using the information of the own terminal without using the common phrase.
However, it is more preferable to use a common phrase. The own terminal specific information is basically unchanged. Then, if only the own terminal unique information is used, there is a possibility that a person who has been waiting in the past may be detected by mistake, and may be confused with a person other than the meeting partner. Therefore, it is preferable to use a common phrase so that it is possible to confirm a meeting with a specific partner accurately.

  The authentication key is H2 [H1 {(other terminal unique information) * (common phrase)} * (own terminal unique information)], but without using the own terminal unique information, H1 {(other terminal unique information) * (Common phrase)} may be used as an authentication key as it is.

  The own terminal unique information is not limited to the telephone number, but may be any information that can identify itself such as a name, a nickname, and a photograph or an illustration depending on the case. Similarly, the other terminal specific information is not limited to a telephone number, but may be a name, a nickname, or a photograph or illustration depending on the case.

DESCRIPTION OF SYMBOLS 10 ... Portable terminal device, 11 ... Wireless communication part, 12 ... Partner search process part, 13 ... Common key generation part, 14 ... Display part, 15 ... Ringing part, 16 ... Input part, 17 ... Control part, 18 ... Memory | storage part , 19 ... Temporary storage unit, 113 ... Transmitting unit, 21 ... Own terminal specific information,
114 ... Receiving part, 31 ... Other terminal specific information, 32 ... Common phrase, 43 ... Send key, 44 ... Authentication key, 52 ... Partner terminal, 53 ... Partner terminal, 111 ... Portable wireless communication part, 112 ... Near field communication part 181 ... Unique information storage area, 182 ... Other terminal information storage area, 182 ... Other terminal information area, 191 ... Search partner holding area.

Claims (4)

A mobile terminal device that detects that a partner terminal is within a predetermined distance by performing near field communication between the terminal and the partner terminal,
Short-range wireless communication means for transmitting and receiving information wirelessly within a predetermined distance;
A transmission key generation unit that generates a transmission key using information of the terminal itself;
An authentication key generation unit that generates an authentication key using information of the counterpart terminal;
A portable terminal device comprising: a partner search processing unit that transmits the transmission key of the terminal itself and authenticates the partner terminal by comparing the received data with the authentication key. The mobile terminal device according to claim 1,
A common phrase is shared between your device and the other device in advance.
The transmission key generation unit generates the transmission key using information of the terminal itself and the common phrase,
The said authentication key production | generation part produces | generates the said authentication key using the other party terminal information and the said common phrase. The portable terminal device characterized by the above-mentioned. In the mobile terminal device according to claim 2,
The authentication key generation unit generates the authentication key using partner terminal information, the common phrase, and information of the terminal itself,
The partner search processing unit generates a verification key from the received data received and information of the terminal itself, and compares the verification key with the authentication key. A short-range search method using a portable terminal device that detects that a partner terminal is within a predetermined distance by performing short-range communication between the terminal and the partner terminal,
Generate a transmission key using the information of your terminal,
Generate an authentication key using the information of the other terminal,
Sending the transmission key of the terminal itself using short-range wireless communication effective only within a predetermined distance,
The received data received using short-range wireless communication is compared with the authentication key,
If the received data received corresponds to the authentication key, the presence of the counterpart terminal is authenticated. A short-range search method using a portable terminal device.

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