JP2005277903A - Communication terminal and communication method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication terminal and a communication method whereby an aid receiver selects one of aid providers resident nearby and makes a speech with the selected aid provider so that a user can readily ask for a help and provide a help. <P>SOLUTION: A reply item storage section 305 displays reply items on a display section 303 and stores a reply item selected by the user. A distance calculation section 308 calculates a distance between a mobile phone of the aid receiver and its own terminal. A condition discrimination section 309 displays a fact of an aid request and aid items on the display section 303 in a form of a message only when the distance between the mobile phone of the aid receiver and its own terminal is a preset threshold value or below and the aid item is coincident with the reply item stored in the reply item storage section 305. When the user responds to the displayed aid request, a reply packet including ID information of its own terminal is transmitted to the mobile phone of the aid receiver. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a communication terminal device and a communication method for transmitting a message to an unspecified party.

  Recently, human relations have become sparse, making it difficult to ask others when you need a little help in town, such as wanting to get lost. Also, even if you offer help to someone who seems to be in trouble, it can be said that you will be taken care of more, making it difficult to talk.

  In view of this, it is conceivable to use a communication terminal device such as a mobile phone, which has recently become widespread, to seek assistance or to respond to it.

In contrast, a mode in which a message is sent to an unspecified person using a mobile phone, a person who is interested in replying to it, and receiving only information from a person who satisfies a predetermined condition upon reception (For example, patent document 1) is disclosed.
JP-A-11-331939

  However, since the above-mentioned Patent Document 1 is intended to send to unspecified people in a wide area where assistance cannot be reached, the purpose is to easily ask for assistance or respond to this. is not.

  The present invention has been made in view of this point, and an object of the present invention is to provide a communication terminal device and a communication method by which a user can easily request assistance or respond to the request. In the following explanation, a person who provides assistance is called an aid, and a person who receives assistance is called a recipient.

  In order to solve this problem, the assisted communication terminal device of the present invention is the above-mentioned supported communication system used in a mobile communication system for transmitting a message from one assisted communication terminal device to an unspecified number of assisted communication terminal devices. An assistance item storage means for storing an assistance item, which is information indicating the content of assistance, and transmitting the assistance item selected by a user to the assistance side communication terminal device; There is adopted a configuration comprising response ID selection means for selecting one of the ID information transmitted from the assistance side communication terminal device and making a call to the assistance side communication terminal device of the selected ID information.

  With this configuration, the recipient can select one of the nearby assistants to make a call, so that the user can easily ask for assistance or respond to this.

  The assisted communication terminal device of the present invention adopts a configuration in which the assistance item is transmitted at a frequency that is different from the frequency of the radio wave for calling and is strong enough to reach the assisted communication terminal device in a predetermined range. .

  This configuration eliminates the need for a self-position detection function and a distance calculation function in the aid side communication terminal device, making it possible to reduce the size and weight of the device, reduce power consumption, and even in underground malls where GPS cannot be used. The system can be implemented.

  The assisting communication terminal device according to the present invention is the assisting communication terminal device used in a mobile communication system that transmits a message from one assisted communication terminal device to an unspecified number of assisting communication terminal devices, A distance calculating means for calculating a distance between the assisted communication terminal device and the own device; a response item storing means for storing a response item that is an item that a user can respond to assistance; and the distance calculating means. The assistance item when the calculated distance is equal to or less than a preset threshold and the assistance item, which is information indicating the content of assistance transmitted from the aided communication terminal device, matches the response item. On the screen, and a transmission means for transmitting the ID information of the own device to the assisted communication terminal device in accordance with an instruction from the user.

  With this configuration, the recipient can select one of the nearby assistants to make a call, so that the user can easily ask for assistance or respond to this.

  The communication method of the present invention is a communication method of a mobile communication system for transmitting a message from one assisted communication terminal device to an unspecified number of assisted communication terminal devices. A step of storing an assistance item, which is information indicating the content of assistance, and transmitting the assistance item selected by a user to the assistance side communication terminal device; A step of calculating a distance between the device and the own device, and a distance between the aided communication terminal device and the own device is equal to or less than a preset threshold in the assisting communication terminal device; A step of displaying the assistance item on the screen when the assistance item transmitted from the communication terminal device matches the response item which is a response item that the user can respond to assistance; and the assistance communication terminal device , Finger from the user Transmitting the ID information of the own device to the assisted communication terminal device, and at the assisted communication terminal device, one of the ID information transmitted from the plurality of assisted communication terminal devices. And a step of making a call to the assisting communication terminal device of the selected ID information.

  The communication method of the present invention employs a method in which, when a base station receives the assistance item from the assisted communication terminal device, the reception item is transmitted only to the assistance communication terminal device belonging to the own cell. .

  By these methods, the recipient can select one of the nearby assistants to make a call, so that the user can easily ask for assistance or respond to it.

  The server of the present invention is a server used in a mobile communication system that transmits a message from one assisted communication terminal device to an unspecified number of assisted communication terminal devices, the assisted communication terminal device and the Distance calculating means for calculating a distance to each assistance side communication terminal device; response item storage means for storing a response item that is an item that a user of each assistance side communication terminal device can respond to assistance; and the distance calculation The distance calculated by the means is equal to or less than a preset threshold value, and the assistance item which is information indicating the content of assistance transmitted from the aided communication terminal device matches the response item. A configuration is adopted that includes condition determining means for searching for a communication terminal device, and transmitting means for transmitting the assistance item to the aid communication terminal device searched by the condition determining means.

  With this configuration, the recipient can select one of the nearby assistants to make a call, so that the user can easily ask for or respond to the assistance. The side communication terminal device can be reduced in size and weight and power consumption can be reduced.

  According to the present invention, the person being supported can select one of the nearby assistants to make a call, so that the user can easily request assistance or respond to this.

  Since the inventor generally needs to be close to the recipient in order to provide assistance, the present inventor has focused on the fact that there is no problem even if the range of receiving the assistance packet is limited. It came to do.

  That is, the gist of the present invention is that the aid side communication terminal device is within a predetermined distance from the recipient side communication terminal device, and the content of assistance requested by the recipient and the content of assistance that the aid can respond to. The aid item is displayed on the aider side communication terminal device only when the two match, and the recipient side communication terminal device selects one of a plurality of aids for which assistance has been offered. .

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, a mobile phone will be described as an example of a communication terminal device.

(Embodiment 1)
FIG. 1 is a system diagram showing a mobile communication system including a mobile phone according to Embodiment 1 of the present invention. In FIG. 1, a base station (BS) 111 communicates with mobile phones (MS) 101 to 104 existing in a cell. In the following description, it is assumed that the mobile phone 101 is the recipient's mobile phone, and the mobile phones 102, 103, and 104 are the assistant's mobile phones.

  Next, the configuration of the recipient's mobile phone 101 according to the present embodiment will be described with reference to the block diagram of FIG.

  2 includes a call unit 201, a transmission / reception unit 202, a display unit 203, an input unit 204, an assistance item storage unit 205, an ID holding unit 206, a position detection unit 207, and a packet assembly unit. 208, a received packet analysis unit 209, and a response ID selection unit 210.

  The call unit 201 is a function for a standard call of a mobile phone, and includes a microphone, a speaker, and the like.

  The transmission / reception unit 202 is a function for standard signal processing of a mobile phone, and performs processing such as encoding / decoding, modulation / demodulation, frequency conversion, and amplification.

  The display unit 203 displays information received by the transmission / reception unit 202, information indicating the content of assistance output from the assistance item storage unit 205 (hereinafter referred to as “aid item”), and the like on the screen. The display unit 203 operates the display screen in accordance with a user instruction via the input unit 204. Examples of assistance items include “I want you to tell me the route to the destination” and “I want to bring my luggage”.

  The input unit 204 electrically converts an instruction by the user's (supported person) button operation into an instruction signal, and outputs the instruction signal to the display unit 203, the assistance item storage unit 205 or the response ID selection unit 210. .

  The assistance item storage unit 205 stores the assistance item, causes the assistance item to be displayed on the display unit 203 according to a user instruction, and outputs information on the assistance item selected by the user to the packet assembly unit 208.

  The ID holding unit 206 stores ID information of the own device (hereinafter referred to as “assistance ID information”).

  The position detection unit 207 detects the current position of the own device, and outputs information indicating the detected position (hereinafter referred to as “help position information”) to the packet assembly unit 208.

  The packet assembling unit 208 includes a packet (including assistance item information selected by the assistance item storage unit 205, assistance ID information stored in the ID holding unit 206, and assistance position information output from the position detection unit 207). (Hereinafter referred to as “help packet”). The assistance packet is wirelessly transmitted to the base station 111 via the transmission / reception unit 202, and is transmitted from the base station 111 to the cellular phones 102 to 104 of the assistant in the cell. The ID information is generally a mobile phone number, but an e-mail address or the like may be used.

  The received packet analysis unit 209 analyzes the contents of a packet (hereinafter referred to as “response packet”) transmitted from the assistant's mobile phone, and ID information (hereinafter referred to as “response ID information”) of the assistant's mobile phone. Is output to the response ID selection unit 210.

  The response ID selection unit 210 selects one of all the response ID information, and makes a call to the mobile phone having the selected response ID information. As a result, the user can talk with the assistant and receive assistance. When the response ID selection unit 210 receives a signal indicating that the assistance item has not ended from the input unit 204 by the user's operation, the response ID selection unit 210 selects another response ID information. Make a call to the mobile phone. On the other hand, when the response ID selection unit 210 inputs a signal indicating that the assistance item has been completed from the input unit 204 by the user's operation, the assistance item is completed for the mobile phones having all the response ID information not selected. A signal to the effect (hereinafter referred to as “end notification”) is transmitted via the transmission / reception unit 202. Note that the selection algorithm in the response ID selection unit 210 may be (1) randomly selected, (2) selected on a first-come-first-served basis, (3) following a recipient's selection instruction, and the like. In the case of the selection methods (1) and (2), there is no need to display ID information, which is beneficial from the viewpoint of privacy protection. Even in the selection method (3), privacy is protected by displaying kana and the like without displaying ID information.

  Next, the configuration of the assistant's mobile phone 102 according to the present embodiment will be described with reference to the block diagram of FIG. It should be noted that the cellular phones 103 and 104 of other assistants have the same configuration.

  3 includes a call unit 301, a transmission / reception unit 302, a display unit 303, an input unit 304, a response item storage unit 305, a received packet analysis unit 306, a position detection unit 307, and a distance calculation. 308, a condition determination unit 309, an ID holding unit 310, and a packet assembly unit 311.

  Here, as functions of the mobile phone 102, (1) a function for storing an item that can respond to assistance set by the user (assistant) (hereinafter referred to as “response item”), and (2) a communication partner There are two functions that respond to the request for assistance. In the following description, the configuration will be described for each function.

  First, (1) the configuration related to the function of storing items that the user can respond to is a display unit 303, an input unit 304, and a response item storage unit 305.

  The display unit 303 displays the response items output from the response item storage unit 305 on the screen. The input unit 304 electrically converts an instruction by the user's operation of the buttons into an instruction signal, and outputs an instruction signal indicating the response item selected by the user to the response item storage unit 305. The response item storage unit 305 displays the response item on the display unit 303 and stores the response item selected by the user.

  Next, (2) a function for responding to an assistance request from a communication partner will be described.

  The call unit 301 is a function for a standard phone call, and includes a microphone, a speaker, and the like.

  The transmission / reception unit 302 is a function for standard signal processing of a mobile phone, and performs processing such as encoding / decoding, modulation / demodulation, frequency conversion, and amplification.

  The display unit 303 displays information received by the transmission / reception unit 302 on the screen. The display unit 303 operates the display screen in accordance with a user instruction via the input unit 304.

  The input unit 304 electrically converts an instruction generated by the user's operation of buttons and the like into an instruction signal, and outputs the instruction signal to the display unit 303 or the ID holding unit 310.

  The received packet analysis unit 306 analyzes the contents of the assistance packet received by the transmission / reception unit 302, outputs assistance position information to the distance calculation unit 308, outputs assistance items to the condition determination unit 309, and sends assistance ID information to the packet. Output to the assembly unit 311.

  The position detection unit 307 detects the current position of the device itself, and outputs information indicating the detected position (hereinafter referred to as “response position information”) to the distance calculation unit 308.

  The distance calculation unit 308 calculates the distance between the recipient's mobile phone and the own device based on the assistance position information and the response position information, and outputs the calculation result to the condition determination unit 309.

  The condition determination unit 309 is such that the distance between the recipient's mobile phone and the device is equal to or less than a preset threshold value, and the assistance item matches the response item stored in the response item storage unit 305. Only in the case, a message indicating that a request for assistance has been made and a help item are displayed on the display unit 303 as a message. An example of the display screen is shown in FIG. The user sees the display and determines whether or not to respond to the request for assistance. When the user responds to a request for assistance, an instruction signal is output to the ID holding unit 310 by the user's operation of the input unit 304. Note that the user may be notified of the request for assistance by sound or vibration.

  The ID holding unit 310 stores the ID information of the own device, that is, the response ID information, and outputs the response ID information to the packet assembling unit 311 when an instruction signal for responding to the request for assistance is input from the input unit 304.

  The packet assembling unit 311 assembles a response packet including the response ID information output from the ID holding unit 310, and inserts the assistance ID information into the header portion of the response packet. The response packet is wirelessly transmitted to the base station 111 via the transmission / reception unit 302, and is transmitted from the base station 111 to the mobile phone 101 of the recipient.

  Next, the flow of the communication method according to the present embodiment will be described using the sequence diagram of FIG. As a premise, the response item selected by the user is stored in the mobile phone of the assistant.

  First, when an assistance item occurs, the recipient receives an assistance packet including an assistance ID signal, an assistance item, and assistance position information from the mobile phone 101 via the base station 111 to the assistant's mobile phones 102 to 104. (S501).

  In each of the mobile phones 102 to 104 of the helpers, the distance between the mobile phone of the helped person and the own device is calculated, the calculated distance is compared with the threshold value, the support items are compared with the response items, and the calculated distance is calculated. Only when the value is equal to or less than the threshold value and the assistance item matches the response item, the message of the assistance item as shown in FIG. 4 is displayed on the screen. The helper displaying the message determines whether or not to respond to the help request (S502). FIG. 5 shows a case where the supporters 102 and 103 respond to the request for assistance and the supporter 104 does not respond to the request for assistance, or the conditions are not met and the assistance item is not displayed on the screen.

  A response packet including response ID information is transmitted from the assistant's mobile telephones 102 and 103 in response to the request for assistance in S502 to the recipient's mobile telephone 101 via the base station 111 (S503).

  The recipient's mobile phone 101 selects one of the assistant's mobile phones 102 and 103 (the mobile phone 102 in FIG. 5) (S504), and makes a call to the selected partner (S505).

  Then, a call is made between the recipient and the selected assistant, and the assistance items are resolved (S506).

  When the assistance items are completed, a termination notice is transmitted from the recipient's mobile phone 101 to the assistant's mobile phone (mobile phone 103 in FIG. 5) that has not been selected (S507). It is also possible to cancel the content of the response after a certain period of time has elapsed since the response packet was transmitted from the assistant's mobile phone 103 without sending the end notification from the recipient's mobile phone 101.

  As described above, according to the present embodiment, the supporter's mobile phone is within a predetermined distance from the supportee's mobile phone, and the helper's request and the supporter can respond. Only when the contents of the assistance are in agreement, the assistance items can be displayed on the assistant's mobile phone. Further, according to the present embodiment, the recipient's mobile phone can select one from a plurality of aids for which assistance has been offered. Thereby, the user can easily ask for assistance or respond to this.

  In the present embodiment, it is conceivable to limit the range in which the assistance packet reaches using another method. The first method is a method of transmitting an assistance packet only to a mobile phone that exists in a cell to which the recipient's mobile phone belongs. Usually, since the base station manages the mobile phone connected to its own cell, by transmitting the assistance packet based on this information, the range in which the assistance packet can be easily reached is limited according to the first method. can do. In addition, the second method is for a mobile phone in which the recipient's mobile phone transmits a weak radio wave at a frequency different from the frequency of the radio wave for calling and can correctly receive the radio wave. The only way to give an opportunity to respond. According to the second method, the position detection units 207 and 307 and the distance calculation unit 308 are not required, so that the size and weight can be reduced and the power consumption can be reduced, and a GPS (Global Positioning System) can be used. This system can be implemented even in underground malls where this is not possible.

(Embodiment 2)
In the second embodiment, a case will be described in which response items and response position information of each assistant are managed by a server, and the server performs condition determination.

  FIG. 6 is a system diagram showing a mobile communication system including a mobile phone according to Embodiment 2 of the present invention. 6 is different from FIG. 1 in that a server 121 connected to the base station 111 is added.

  The assistant's mobile phones 102 to 104 transmit packets including response items and response ID information to the server 121 via the base station 111 in advance, and the server 121 stores these pieces of information. The assistant's mobile phones 102 to 104 periodically transmit packets including response position information to the server 121 via the base station 111, and the server 121 corresponds the response position information to response ID information and response items. Add and remember. The assistance packet transmitted from the recipient's mobile phone 101 is transmitted to the server 121 via the base station 111.

  FIG. 7 is a block diagram illustrating a configuration of the server 121 according to the embodiment. The server 121 mainly includes an interface unit 701, a received packet analysis unit 702, a portable information storage unit 703, a distance calculation unit 704, a condition determination unit 705, and a packet assembly unit 706.

  The interface unit 701 inputs / outputs signals to / from the base station 111, outputs a packet signal from the base station 111 to the received packet analysis unit 702, and outputs a packet from the transmission packet assembly unit 706 to the base station 111. To do.

  The received packet analysis unit 702 analyzes the contents of the packet input to the interface unit 701, and outputs response ID information, response items, and response position information of the assistant's mobile phone to the mobile information storage unit 703. Also, the received packet analysis unit 702 analyzes the content of the assistance packet input to the interface unit 701, outputs assistance position information of the recipient's mobile phone to the distance calculation unit 704, and sets the assistance item as a condition determination unit 705. And the assistance ID information is output to the packet assembling unit 706.

  The portable information storage unit 703 stores response ID information, response items, and response position information of the assistant's mobile phone in association with each other.

  The distance calculation unit 704 calculates the distance between the recipient's mobile phone and each assistant's mobile phone based on the assistance position information and the response position information, and outputs the calculation result to the condition determination unit 705.

  The condition determination unit 705 searches for a helper's mobile phone whose distance from the recipient's mobile phone is equal to or less than a preset threshold value and the support item and the response item match, and searches for the helper The response ID information of the mobile phone (hereinafter referred to as “help candidate”) is output to the packet assembling unit 706.

  The packet assembling unit 706 assembles an assistance packet including the assistance item output from the received packet analysis unit 702, and inserts the response ID information output from the condition determination unit 705 into the header part of the assistance packet. The assistance packet is output to the base station 111 via the interface unit 701 and transmitted from the base station 111 to the assistance candidate's mobile phone.

  Next, the configuration of the assistant's mobile phone 102 according to the present embodiment will be described with reference to the block diagram of FIG. In FIG. 8, the same reference numerals as those in FIG.

  The mobile phone 102 in FIG. 8 adopts a configuration in which the distance calculation unit 308 and the condition determination unit 309 are deleted as compared with FIG. Further, in the mobile phone 102 of FIG. 8, the call unit 301, the transmission / reception unit 302, the display unit 303, the input unit 304, and the ID holding unit 310 have the same operations as those in FIG.

  The response item storage unit 305 causes the display unit 303 to display the response item according to a user instruction, and outputs the response item selected by the user to the packet assembly unit 311.

  The received packet analysis unit 306 analyzes the content of the assistance packet received by the transmission / reception unit 302, displays the request for assistance and the assistance item as a message on the display unit 303, and provides assistance ID information to the packet assembly unit 311. Output.

  The position detection unit 307 periodically outputs the response position information to the packet assembly unit 311.

  The packet assembly unit 311 assembles a packet including response ID information and response items. The packet assembling unit 311 assembles a packet including response position information. These packets are wirelessly transmitted to the base station 111 via the transmission / reception unit 302 and output from the base station 111 to the server 121. Further, the packet assembling unit 311 assembles a response packet including the response ID information output from the ID holding unit 310, and inserts the assistance ID information into the header portion of the response packet. The response packet is wirelessly transmitted to the base station 111 via the transmission / reception unit 302, and is transmitted from the base station 111 to the mobile phone 101 of the recipient.

  Next, the processing flow of the server according to the present embodiment will be described using the flowchart of FIG. As a premise, in the server 121, response ID information, response items, and response position information of each assistant's mobile phone are stored in advance in association with each other.

  First, the server 121 inputs an assistance packet from the base station 111, and extracts assistance position information, assistance items, and assistance ID information of the recipient's mobile phone from the assistance packet (S901).

  Next, the server 121 calculates the distance between each assistant's mobile phone and the recipient's mobile phone (S902). The calculated distance is equal to or less than a preset threshold value, and the assistant's mobile phone in which the assistance item and the response item match is searched, and the searched assistance person is selected as an assistance candidate (S903). ).

  Finally, the server 121 transmits an assistance packet to the assistance candidate's mobile phone (S904).

  As described above, according to the present embodiment, the server is located on the helper side whose distance from the helper side mobile phone is within a predetermined range, and the help item requested by the helped person matches the response item. Assistance packets can be sent only to mobile phones. Thereby, in addition to the effect of Embodiment 1, it is possible to reduce the size and weight of the assistant-side mobile phone and reduce the power consumption.

  In each of the above-described embodiments, it is needless to say that a single mobile phone can have both functions of the supporter side and the supportee side. In this case, the communication units 201 and 301, transmission / reception units 202 and 302, display units 203 and 303, input units 204 and 304, ID holding units 206 and 310, and position detection units 207 and 307 in FIGS. The packet assembly units 208 and 311 and the received packet analysis units 209 and 306 are shared.

  In each of the above embodiments, a mobile phone has been described as an example. However, the present invention is not limited to this and can be applied to other communication terminal devices, and is realized by a method that does not use voice, such as e-mail. You can also. In the case of the electronic mail system, the call units 201 and 301 in FIGS. 2 and 3 (FIG. 8) are changed to message transmission / reception units.

  The present invention is suitable for use in a communication terminal device and a mobile communication system for transmitting a message to an unspecified partner.

1 is a system diagram showing a mobile communication system including a mobile phone according to Embodiment 1 of the present invention. The block diagram which shows the structure of the recipient's portable telephone which concerns on the said embodiment The block diagram which shows the structure of the portable telephone of the helper which concerns on the said embodiment The figure which shows an example of the display screen of the portable telephone of the assistance person which concerns on the said embodiment The sequence diagram which shows the flow of the communication method which concerns on the said embodiment System diagram showing a mobile communication system including a mobile phone and a server according to Embodiment 2 of the present invention. The block diagram which shows the structure of the server which concerns on the said embodiment. The block diagram which shows the structure of the portable telephone of the helper which concerns on the said embodiment The flowchart which shows the flow of the process of the server which concerns on the said embodiment

Explanation of symbols

101, 102, 103, 104 Mobile phone 111 Base station 121 Server 201, 301 Calling unit 202, 302 Transceiver 203, 303 Display unit 204, 304 Input unit 205 Aid item storage unit 206, 310 ID holding unit 207, 307 Position detection Unit 208, 311, 706 Packet assembly unit 209, 306, 702 Received packet analysis unit 210 Response ID selection unit 305 Response item storage unit 308, 704 Distance calculation unit 309, 705 Condition determination unit 701 Interface unit 703 Portable information storage unit

Claims (6)

The assisted communication terminal device used in a mobile communication system for transmitting a message from a single assisted communication terminal device to an unspecified number of assisted communication terminal devices,
Assistance item storage means for storing assistance items, which are information indicating the contents of assistance, and transmitting assistance items selected by the user to the assistance communication terminal device;
Response ID selection means for selecting one of the ID information transmitted from the plurality of assistance side communication terminal devices and making a call to the assistance side communication terminal device of the selected ID information. A recipient communication terminal device characterized by the above.   The assisted communication terminal device according to claim 1, wherein the assisted item is transmitted at a frequency different from a frequency of a radio wave for a call with a strength reaching the assisted communication terminal device in a predetermined range. The assisting communication terminal device used in a mobile communication system for transmitting a message from one supported communication terminal device to an unspecified number of assisting communication terminal devices,
A distance calculating means for calculating a distance between the assisted communication terminal device and the own device;
Response item storage means for storing response items which are items that the user can respond to assistance;
The distance calculated by the distance calculation means is equal to or less than a preset threshold value, and the assistance item which is information indicating the content of assistance transmitted from the assisted communication terminal device matches the response item. Condition determining means for displaying the aid item on the screen when
Transmitting means for transmitting ID information of the own device to the assisted communication terminal device in accordance with an instruction from the user, comprising: an assisting communication terminal device. A communication method of a mobile communication system for transmitting a message from a single recipient communication terminal device to an unspecified number of aid communication terminal devices,
Storing the assistance item, which is information indicating the contents of assistance, in the assistance-side communication terminal device, and transmitting the assistance item selected by the user to the assistance-side communication terminal device;
A step of calculating a distance between the assisted communication terminal device and the own device in the assisted communication terminal device;
In the assistance side communication terminal device, the distance between the assistance side communication terminal device and the own device is equal to or less than a preset threshold, and the assistance item and user transmitted from the assistance side communication terminal device are Displaying the assistance item on a screen when a response item, which is an item that can be answered to assistance, matches,
In the assistance side communication terminal device, transmitting the ID information of the own device to the assistance side communication terminal device according to an instruction from the user;
The assisted communication terminal device selects one of the ID information transmitted from the plurality of assisted communication terminal devices, and makes a call to the assisted communication terminal device of the selected ID information. A communication method comprising the steps of:   The base station transmits a received item only to the assisting communication terminal device belonging to its own cell when receiving the assisting item from the aided communication terminal device. A server used in a mobile communication system for transmitting a message from one assisted communication terminal device to an unspecified number of assisted communication terminal devices,
Distance calculating means for calculating a distance between the assisted communication terminal device and each assisted communication terminal device;
Response item storage means for storing response items which are items that can be responded to assistance by the user of each aid side communication terminal device;
The distance calculated by the distance calculation means is equal to or less than a preset threshold value, and the assistance item which is information indicating the content of assistance transmitted from the assisted communication terminal device matches the response item. A condition determination means for searching for an assisting communication terminal device to perform,
A transmission unit configured to transmit the assistance item to the assistance-side communication terminal device searched by the condition determination unit;

Images