KR100839608B1 - System and Method for Controlling Emergency Call of Radiotelegraph - Google Patents

Abstract

The present invention provides a radio emergency call control system and method for transmitting an emergency call message to a desired counterpart radio through a relay function of another radio located within a radio coverage area, even if the other radio is located outside the radio communication distance between radios. To provide. To this end, the present invention creates and transmits an emergency call message including an emergency call for an emergency call for an emergency call reception radio that is out of the radio communication range, and receives a call response message from the emergency call reception radio. The emergency call outgoing radio and the emergency call outgoing radio and the emergency call outgoing radio are located within the radio communication distance and the emergency call outgoing radio and the radio communication distance in the state of being located within the radio communication distance. Receives and displays an emergency call relay from an emergency call relay and an emergency call relay that relays an emergency call message and a call response message between credit radios and a call response message accordingly. Make an emergency call through the emergency call relay It is characterized by including an emergency call receiving radio for transmitting to the radio.

Walkie-talkie, emergency call, message, relay

Description

Radio and emergency call control system and its method {System and Method for Controlling Emergency Call of Radiotelegraph}

1 is a diagram schematically showing an emergency call state by an emergency call control system of a radio according to the present invention;

2 is a view showing a configuration for a radio with an emergency call control function according to the present invention,

3 is a diagram illustrating a state of transmitting an emergency call message to a target radio by using a relay function of the radio according to a preferred embodiment of the present invention;

4 is a view showing a state of delivering an emergency call message according to an emergency call cycle to a plurality of emergency call targets according to a preferred embodiment of the present invention;

5 is a flowchart illustrating the operation of the emergency call control method of the radio according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: duplexer, 12: RF amplifier,

14: mixer, 16: local oscillator,

18: middle frequency signal processing unit, 20: audio filter,

22: audio amplifier, 24: speaker,

26: switch unit, 27: message receiving unit,

28: CTCSS detection unit, 30: microphone,

32: frequency oscillator, 34: modulator,

36: transmission amplifier, 38: PTT switch,

40: key input section, 42: display section,

44: GPS receiver, 46: position coordinate processing,

48: memory, 50: control unit.

The present invention relates to an emergency call control system and a method of a radio for generating emergency call information in case of an emergency in the radio to transmit to other radios.

In general, the radio is capable of transmitting signals in both directions between two communicating points. However, when a signal is transmitted from one point, only the signal can be received at another point. It uses a communication method of PTT (Push To Talk) function that needs to explicitly change the transmission direction by using.

In the case of the Radio Radio Service (FRS), which is the most widely used among these PTT radios, the 27 MHz (vehicle) or 448 MHz or 462 MHz ultra high frequency (UHF) allocated for free use without paying a radio fee Is mainly used, and its radio wave communication distance is within 3 km.

In the case of commercial radios, the frequency of ultra high frequency (VHF) or ultra high frequency (UHF) is to be paid for a certain amount, and the radio communication range is formed within 10 km to 20 km.

On the other hand, such a walkie-talkie has the advantage that it is possible to talk with the other party's radio freely without paying a separate radio fee, but the communication distance of the radio is considerably shorter than that of a business radio. The call must be carried out only within the area.

That is, such radios have a limited radio communication distance, so that normal calls can be made only when the other radio is located within the radio communication distance. If an emergency situation occurs to the user of the radio in the state, it is impossible to inform the emergency situation through the communication method using the radio.

Therefore, in recent years, a new device and method are urgently required to easily notify an emergency situation even when the other radio is located outside the radio communication distance.

Accordingly, the present invention has been made in view of the above-described conventional circumstances, and an object thereof is to provide an emergency call message through a relay function of another radio located in a radio communication area, even if the other radio is located outside the radio communication distance between radios. It is to provide an emergency call control system and method of a radio that can be delivered to the other party radio.

In order to achieve the above object, according to the system of the present invention, for making an emergency call for an emergency call reception radio that is out of the radio communication range, an emergency call message including an emergency call matter is created and transmitted and the number of emergency calls. An emergency call outgoing radio receiving and displaying a call response message from a credit radio, and being located within a radio communication distance with the emergency call outgoing radio, while being located within a radio communication distance with the emergency call reception radio, Receive an emergency call message from the emergency call outgoing radio through the emergency call relay that relays the emergency call message and the call response message between the emergency call outgoing radio and the emergency call reception radio. Receives a call and writes a call response message accordingly. It provides an emergency call control system of a radio, characterized in that configured including an emergency call receiving radio to transmit to the emergency call outgoing radio through a relay radio.

In order to achieve the above object, according to the method of the present invention, for making an emergency call to the emergency call receiving radio that is out of the radio communication distance in the emergency call transmission radio, by creating an emergency call message containing the emergency call details Transmitting an emergency call message from the emergency call transmitting radio in the emergency call transmitting radio located in the emergency call receiving radio and the radio communication distance, and at the same time. Transmitting the emergency call reception radio to the emergency call reception radio, receiving and displaying an emergency call message from the emergency call transmission radio through the emergency call relay at the emergency call reception radio, and receiving the emergency call reception radio. If there is a call response input by the user at Creating a response message and transmitting the response message to the emergency call relay, receiving the call response message from the emergency call relay, and transmitting the response message to the emergency call transmitting radio; It provides an emergency call control method of a radio, comprising the step of receiving and displaying the call response message from the emergency call receiving radio through the emergency call relay.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

That is, Figure 1 is a diagram showing an emergency call state by the emergency call control system of the radio according to the present invention.

As shown in FIG. 1, according to the present invention, when there are first to third radios A1 to A3 capable of conducting a voice call through the mutual PTT function, the third radio A3 is the first radio. Located outside the radio communication area 2 formed by A1, the second radio A2 is located in the radio communication area 2 of the first radio A1, and the third radio A3. It is a state located in the electric wave communication area of.

Further, the first to third radios A1 to A3 have a GPS reception function that can receive position coordinate signals from the GPS satellites 4 and generate their own position information.

In this state, when an emergency situation occurs to the user of the first radio A1 and the third radio A3 needs to be informed of an emergency situation, the first radio A1 creates an emergency call message and generates a GPS satellite. When the second radio A2 is transmitted to the second radio A2 located in the radio wave communication area 2 together with its own location information by the position coordinates received from (4), the second radio A2 makes an emergency call including the location information. The message is relayed to the third radio A3.

When the third radio A3 receives an emergency call message through the second radio A2 located in its radio communication area, it transmits the call response information to the second radio A2. The second radio A2 transmits call response information from the third radio A3 to the first radio A1.

When the user of the third radio A3 receives an emergency call message and recognizes an emergency situation, the user attempts to make a call through the PTT function, but is out of the radio communication distance between the radios. The location information of the first radio A1 that is received is grasped and moved to an area where the first radio A1 is located, or a desired message (ie, text and numeric information) is loaded on the call response information. .

On the other hand, the first to third radios A1 to A3 are commonly configured as an emergency call control system of the radio as shown in FIG.

That is, Figure 2 is a diagram showing the configuration for a radio with an emergency call control function according to the present invention.

As shown in FIG. 2, the radio having the emergency call control function according to the present invention includes a duplexer 10, an RF amplifier 12, a mixer 14, and a local oscillator 16. , An intermediate frequency signal processor 18, an audio filter 20, an audio amplifier 22, a speaker 24, a switch 26, a message receiver 27, a CTCSS detector 28, a microphone 30, Frequency oscillator 32, modulator 34, transmit amplifier 36, PTT switch 38, key input 40, display 42, GPS receiver 44, position coordinate processor 46, memory 48, the control unit 50.

The duplexer 10 outputs the RF signal received from the antenna to the RF amplification unit 12 side, and outputs the transmission frequency signal from the transmission amplification unit 36 to the antenna side for wireless transmission.

The RF amplifier 12 RF amplifies the RF signal received through the duplex 10, the mixer 14 mixes the amplified RF signal and the local oscillation frequency supplied from the local oscillator 16 To convert to an intermediate frequency signal.

The intermediate frequency signal processor 18 detects and demodulates the intermediate frequency signal through the mixer 14 to extract an audio signal or an emergency call message signal according to the present invention, and extracts the extracted audio signal from the audio filter 20. And the CTCSS detection unit 28 or the emergency call message signal to the control unit 50 through the switch unit 26.

The audio filter 20 filters and outputs an audio signal from the intermediate frequency signal processor 18, and the audio amplifier 22 power amplifies the filtered audio signal to reproduce speech through a speaker 24. Output as possible.

The switch unit 26 performs switching so that the audio signal is output to the audio filter 20 by detecting the CTCSS tone frequency by the CTCSS detector 28, or the emergency call message signal is transmitted to the controller 50. Switching is performed so as to be output, and the message receiving unit 27 receives an emergency call message through the switch unit 26 and outputs it to the control unit 50.

The CTCSS detector 28 detects the CTCSS tone frequency from the audio signal or the emergency call message signal and controls the switch unit 26 when the CTCSS tone frequency matches a preset tone frequency so that the output path of the audio signal is directed to the audio filter 20. It is maintained or the emergency call message signal is output to the controller 50 side.

The frequency oscillator 32 synthesizes the audio signal of the user input from the microphone 30 with the CTCSS tone frequency and outputs the synthesized emergency call message according to the present invention with the CTCSS tone frequency and outputs the modulator 34. ) Modulates the synthesized signal of the audio signal and the CTCSS tone frequency or the synthesized signal of the emergency call message and the CTCSS tone frequency into a frequency capable of wireless transmission and outputs the modulated signal.

The transmission amplifier 36 RF amplifies the transmission frequency signal modulated by the modulator 34 and outputs the RF signal to the duplexer 10, and the PTT switch 38 transmits the transmission frequency signal through a PTT function. Switched by the user for wireless transmission.

The key input unit 40 includes a function key button for selecting a radio channel and a CTCSS tone, and a function key button for inputting letters and numbers included in setting up an emergency call mode and an emergency call message.

The display unit 42 displays a voice call state by a normal radio function, sets an emergency call function to display an input state of a text and numeric message for an emergency call, and receives an emergency call message received from a counterpart radio. Is displayed.

The GPS receiver 44 receives a position coordinate signal from a GPS satellite through a GPS antenna, and the position coordinate processor 46 calculates a position coordinate signal received from a GPS satellite to generate current position information of the radio.

The memory 48 includes an emergency call code assigned in an emergency call mode, a unique radio number uniquely assigned to its radio, a radio number unique to the other party's radio registered in advance, and a plurality of emergency call codes. The text input message for each emergency call case is stored, and the location information of the radio is stored.

In addition, the memory 48 preferably stores a text input message for an emergency call previously written and transmitted.

Preferably, the unique radio number is assigned a directory number having the same number system as the telephone number system (for example, 011-123-4567) of the mobile communication terminal.

When the emergency call mode is set by the user, the controller 50 selects a text input message consisting of letters and numbers input by the key input unit 40 or a plurality of text input messages stored in the memory 48. And an emergency call message including the location information of the corresponding radio generated from the position coordinate processing unit 46 and a unique radio number for the radio of the destination, and output to the frequency oscillator 32.

The controller 50 outputs an emergency call message received through the message receiver 27 to the frequency oscillator 32 when the radio performs a relay function for relaying an emergency call message from another radio. Through the frequency oscillator 32, the modulator 34, the transmission amplifier 36, and the duplexer 10, the radio is transmitted to the radio side of the destination located in the radio communication area.

In addition, when the corresponding radio is an emergency call target from another radio, the controller 50 automatically transmits an ACK message in response to the emergency call message received through the message receiving unit 27 regardless of the user's operation. If there is a response message input by the user's key input unit 40 operation, the call response message is output to the frequency oscillator 32, and the emergency call message is transmitted to the radio side which transmits the emergency call message through the radio providing the relay function. Be sure to

Here, when the emergency call mode is set, the controller 50 causes a menu item for selecting a previously input text input message to be displayed on the display unit 44, for example, a predetermined time such as 2 to 3 seconds. If there is no menu selection or text input through the key input unit 40 within, it is preferable to identify the previously written text input message as a basic emergency call message and include it in the emergency call message.

Meanwhile, as shown in FIG. 3, when an emergency call message is created in the first radio A1 and the corresponding emergency call message is transmitted to the third radio A3 through the relay function of the second radio A2. The emergency call message 60 generated from the first radio A1 may include an emergency call code, a corresponding date and time, a unique radio number of the first radio A1, and a third radio A3 of the message receiver. It includes a unique radio number, text entry message, and location information.

Here, the first radio A1 encodes and transmits its own radio number included in the emergency call message and the unique radio number of the counterpart message receiver according to an encoding algorithm predefined for the message. According to the rules, the order of the numbers is changed (for example, when the unique radio number is "012-345-6789", the order is changed to "1357902468") to transmit.

When the second radio A2 receives the emergency call message 60 from the first radio A1, the second radio A2 is subject to reception by the unique radio number of the message receiver included in the emergency call message 60. If not, the emergency call message 60 is transmitted to the third radio A3.

The third radio A3 receives the emergency call message 60 through the relay function of the second radio A2 and grasps that the third radio A3 is a message receiving target by the unique radio number of the message receiver included in the message. In response, the ACK message 64 is automatically transmitted to the second radio A2 regardless of the user's manipulation.

When the second radio A2 receives the ACK message 64 from the third radio A3, the second radio A2 deletes the emergency call message temporarily stored in the memory for the relay function of the message, and the ACK message 64. Transmits to the first radio A1.

When the first radio A1 receives the ACK message 64 from the third radio A3 through the relay function of the second radio A2, the first radio A1 terminates the emergency call mode.

On the other hand, when a call response message 62 is generated and transmitted by a key input operation by the user of the third radio A3, the second radio A2 relays the call response message 62 to the first call. The call response message 62 includes an emergency call code, a date and time, a unique radio number of the third radio A3, and a first radio A1 which has generated an emergency call. A unique radio number of a, includes a text input message written by the user of the third radio (A3).

Next, FIG. 4 is a diagram illustrating a state of transmitting an emergency call message according to an emergency call cycle to a plurality of emergency call targets according to a preferred embodiment of the present invention.

As shown in FIG. 4, when there are a plurality of emergency call targets in the first radio A1, a plurality of radios for emergency call targets can be designated, and the emergency call message can be periodically repeatedly transmitted according to a set time. Set up an emergency call cycle so that

The first radio A1 may transmit an emergency call message to a plurality of radios A2-1 and A2-2 located in a radio communication area of the first radio A1 together with information of a call cycle, respectively. The radios A2-1 and A2-2 transmit the emergency call message to all radios A3-1, A3-2 and A3-3 located in their radio communication area by performing the relay function of the message.

Here, the radios A2-1 and A2-2 in charge of the relay function store the call cycles received together with the emergency call message from the first radio A1 in each memory, and repetitively according to the call cycles. Send emergency call messages to other radios (A3-1, A3-2, A3-3).

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 5.

First, the first radio A1 attempts a voice call through the radio to make contact with the user of the third radio A3 due to an emergency situation, but the third radio A3 is located outside the radio communication distance. Therefore, when the voice call cannot be performed, the emergency call mode is set by a user operation of the key input unit 40 to create a text input message for emergency call, or a plurality of emergency call cases stored in the memory 48. A specific message is selected from among the text input messages in step S10.

In that state, the first radio A1 is connected to the emergency call code as shown in Fig. 3 after the call receiver to receive a message by the user, that is, the third radio A3 is selected (step S12). , The emergency call message including the date and time, its own radio number and the other party's unique radio number, a text input message, and location information (step S12), and the emergency call message corresponds to the corresponding first radio ( It is located within the radio communication distance with A1) and is transmitted to the second radio A2 located within the radio communication distance with the third radio A3.

When the second radio A2 receives the emergency call message, the second radio A2 recognizes that the emergency call is made by the emergency call code included in the message (step S13), and the message is transmitted through the unique radio number of the emergency call message. It is determined that the relay function should be performed as it is recognized that the receiving terminal is not (step S14).

Accordingly, the second radio A2 transmits the emergency call message to the third radio A3 located in the radio communication area of the radio (step S15).

The third radio A3 recognizes that it is an emergency call state by the emergency call code included in the emergency call message (step S16), and it is through the unique radio number of the message receiver side included in the emergency call message. It is recognized that the message is the receiving terminal (step S17).

In this state, the third radio A3 transmits an ACK message to the second radio A2 in charge of the relay function irrespective of the user's operation (step S18), and the second radio A2. Deletes the emergency call message temporarily stored in the memory by the ACK message (step S19).

In addition, the second radio A2 transmits the ACK message to the first radio A1 (step S20), and the first radio A1 transmits the third radio through the second radio A2. Upon receiving the ACK message from (A3), the emergency call mode is terminated and the emergency call message temporarily stored in the memory is deleted (step S21).

On the other hand, the third radio A3 determines whether or not a call response input is made by the user's key input unit 40 (step S22). If it is determined that no call response is input, the third radio A3 continuously waits. If it is determined that the call response is being input, as shown in FIG. 3, the emergency call code, the date and time, its own radio number and its unique radio number on the emergency call side, and the key input unit are shown. The call response message including the text input message input by the operation of 40 is transmitted to the second radio A2 in charge of the relay function (step S24).

The second radio A2 transmits a call response message from the third radio A3 to the first radio A1 (step S25), and the first radio A1 requests an emergency call. The text input message included in the call response message from the radio A3 is displayed on the display unit 42 to confirm the result of the emergency call.

While specific embodiments of the present invention have been described and illustrated above, it will be apparent that the present invention may be embodied in various modifications by those skilled in the art. Such modified embodiments should not be understood individually from the technical spirit or the prospect of the present invention, but should fall within the claims appended to the present invention.

As described above, according to the present invention, when a situation in which a specific radio needs to emergencyly call another radio occurs, the voice call is made as the receiving radio of the emergency call is located out of the radio communication distance with respect to the calling radio of the emergency call. If the call cannot be made, the emergency call message is created by the calling party's radio so that it can be delivered to the emergency call receiving radio at the destination through the relay function of another radio located in the radio communication area. Receiving radios can also send call answering messages to the calling party's radio from other radios that are responsible for their relaying functions. It is possible to easily convey the message to be done Will have the effect that good.

Claims (16)

delete To make an emergency call for an emergency call receiving radio that is outside the radio communication range, create an emergency call message containing the emergency call and send it, and receive and display a call response message from the emergency call receiving radio. Outgoing radios; An emergency call message and a call response message between the emergency call transmission radio and the emergency call reception radio in the state of being located within the radio communication distance with the emergency call transmission radio and at the same time within the radio communication distance. Emergency call relay for relaying; And Receive and display the emergency call message from the emergency call outgoing radio through the emergency call relay, and create a call response message according to the emergency call outgoing to the emergency call outgoing radio through the emergency call relay Including a radio for receiving, The emergency call transmitting radio includes a reception frequency processor for signal-processing a reception frequency signal from the other party's radio, a transmission frequency processor for signal-processing a transmission frequency signal generated for transmission, and an emergency call relay received from the reception frequency processor. Message receiving unit for receiving a call response message from the radio for receiving an emergency call through a radio, a key input unit for setting an emergency call mode and inputting an emergency call included in an emergency call message, and displaying a state of preparation of the emergency call message; A display unit for displaying a received call response message, a memory in which information data for creating an emergency call message is stored, and an emergency call message generated by the key input unit based on the information data in the memory in an emergency call mode for transmission; Output to the frequency processor And a control unit for controlling the received call response message to be displayed on the display unit. The method of claim 2, The emergency call item included in the emergency call message may be any one of a text input message consisting of letters and numbers input by the key input unit or a text input message for each emergency call case preset in the memory. Emergency call control system. The method of claim 2, It further comprises a GPS receiver for receiving a position coordinate signal from a GPS satellite, and a position coordinate processing unit for generating the current position information of the radio based on the received position coordinate signal, The control unit, the emergency call control system of the radio, characterized in that to include the location information of the radio generated in the position coordinate processing unit in the emergency call message. The method according to any one of claims 2 to 4, The emergency call message includes an emergency call code, a corresponding date and time, a unique radio number of the emergency call outgoing radio, a unique radio number for the emergency call receiving radio, a text input message, and location information. Radio emergency call control system. To make an emergency call for an emergency call receiving radio that is outside the radio communication range, create an emergency call message containing the emergency call and send it, and receive and display a call response message from the emergency call receiving radio. Outgoing radios; An emergency call message and a call response message between the emergency call transmission radio and the emergency call reception radio in the state of being located within the radio communication distance with the emergency call transmission radio and at the same time within the radio communication distance. Emergency call relay for relaying; And Receive and display the emergency call message from the emergency call outgoing radio through the emergency call relay, and create a call response message according to the emergency call outgoing to the emergency call outgoing radio through the emergency call relay Including a radio for receiving, The emergency call relay includes a reception frequency processor for signal-processing a reception frequency signal from the other party's radio, a transmission frequency processor for signal-processing a transmission frequency signal generated for transmission, and an emergency call origination received from the reception frequency processor. The message receiving unit receiving an emergency call message from the radio or a call response message from the emergency call receiving radio, a memory for temporarily storing the received emergency call message, and the emergency call message received through the message receiving unit And a control unit for outputting to a transmission frequency processor for transmission to an emergency call reception radio and for outputting the received call response message to the transmission frequency processing unit for transmission to the emergency call transmission radio. Urgent Export control system. To make an emergency call for an emergency call receiving radio that is outside the radio communication range, create an emergency call message containing the emergency call and send it, and receive and display a call response message from the emergency call receiving radio. Outgoing radios; An emergency call message and a call response message between the emergency call transmission radio and the emergency call reception radio in the state of being located within the radio communication distance with the emergency call transmission radio and at the same time within the radio communication distance. Emergency call relay for relaying; And Receive and display the emergency call message from the emergency call outgoing radio through the emergency call relay, and create a call response message according to the emergency call outgoing to the emergency call outgoing radio through the emergency call relay Including a radio for receiving, The emergency call reception radio includes a reception frequency processor for signal-processing a reception frequency signal from the other party's radio, a transmission frequency processor for signal-processing a transmission frequency signal generated for transmission, and an emergency call relay received from the reception frequency processor. Message receiving unit for receiving a call response message from the emergency call outgoing radio via the radio, a key input unit for inputting a call response message for the emergency call message, display the status of the call response message and the received emergency call message A display unit to display, a memory in which information data for creating a call response message is stored, and the received emergency call message to be displayed on the display unit, and a call response message created by the key input unit based on the information data of the memory Song to send Emergency call control system of the transceiver, characterized in that configured by a control unit for outputting a frequency processing. To make an emergency call for an emergency call receiving radio that is outside the radio communication range, create an emergency call message containing the emergency call and send it, and receive and display a call response message from the emergency call receiving radio. Outgoing radios; An emergency call message and a call response message between the emergency call transmission radio and the emergency call reception radio in the state of being located within the radio communication distance with the emergency call transmission radio and at the same time within the radio communication distance. Emergency call relay for relaying; And Receive and display the emergency call message from the emergency call outgoing radio through the emergency call relay, and create a call response message according to the emergency call outgoing to the emergency call outgoing radio through the emergency call relay Including a radio for receiving, The emergency call transmitting radio designates a plurality of radio call target radios and transmits emergency call messages to the plurality of emergency call reception radios respectively designated through the emergency call relay. Call control system. To make an emergency call for an emergency call receiving radio that is outside the radio communication range, create an emergency call message containing the emergency call and send it, and receive and display a call response message from the emergency call receiving radio. Outgoing radios; An emergency call message and a call response message between the emergency call transmission radio and the emergency call reception radio in the state of being located within the radio communication distance with the emergency call transmission radio and at the same time within the radio communication distance. Emergency call relay for relaying; And Receive and display the emergency call message from the emergency call outgoing radio through the emergency call relay, and create a call response message according to the emergency call outgoing to the emergency call outgoing radio through the emergency call relay Including a radio for receiving, The emergency call sending radio sets the transmission cycle of the emergency call message, and the emergency call message relayed through the emergency call relay is repeatedly transmitted to the emergency call receiving radio side according to the transmission cycle. Radio emergency call control system. delete To make an emergency call for an emergency call receiving radio where the emergency call outgoing radio is out of the radio communication range, a text input message consisting of letters and numbers input by a user and a text input message for each emergency call case stored in advance. A first step of creating and transmitting an emergency call message including an emergency call made; An emergency call message is relayed from the emergency call outgoing radio by an emergency call relay located in the emergency call receiving radio and a radio communication distance at the same time. A second step of transmitting to a receiving radio; A third step of receiving and displaying an emergency call message from an emergency call transmission transceiver through the emergency call relay transceiver in an emergency call reception radio; A fourth step of, if there is a call response input by the user in the emergency call receiving radio, creating a call response message accordingly and transmitting the call response message to the emergency call relay; A fifth step of receiving the call response message from the emergency call relay and transmitting the received call response message to the emergency call transmission radio; And And a sixth step of receiving and displaying a call response message from the emergency call reception transceiver through the emergency call relay transceiver in the emergency call transmission radio. The method of claim 11, The first step may include displaying a menu item for selecting a previously input text input message when the emergency call mode is set in the emergency call transmitter. If there is no text input through a menu selection or a user's key input within a predetermined time, the method further comprises the step of identifying a previously prepared text input message as a basic emergency call message and including it in an emergency call message. Emergency call control method of a radio. The method of claim 11, The first step may further include receiving a position coordinate signal from a GPS satellite, generating current position information of the corresponding radio based on the received position coordinate signal, and including the same in the emergency call message. Emergency call control method of the radio, characterized in that. The method of claim 11, In the first step, the emergency call message includes an emergency call code, a corresponding date and time, a unique radio number of the emergency call outgoing radio, a unique radio number of the emergency call receiving radio, a text input message, and location information. Emergency call control method of the radio, characterized in that it is included. The method of claim 11, The first step may further include a step of designating a plurality of emergency call target radios in the emergency call transmission radio. The second step, the emergency call control method of the radio, characterized in that further comprising the step of transmitting an emergency call message to each of the plurality of emergency call reception radio designated in the emergency call relay. The method of claim 11, The first step further comprises the step of setting the transmission period of the emergency call message in the emergency call transmission radio, The second step, the emergency call control method of the radio call further comprising the step of repeatedly transmitting the emergency call message to the emergency call receiving radio side in accordance with the transmission cycle.

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