KR20040048210A - Message transmission method for mobile communication terminal device - Google Patents

Abstract

PURPOSE: A message transmission method of a mobile terminal is provided to transfer a message in real time by using a DTMF(Dual Tone Multi Frequency) if a call connection is not good. CONSTITUTION: A caller of an origination side terminal inputs a phone number of a mobile terminal of a receiver and presses a call key. Then, an exchange checks a channel and establishes call connection between the origination side terminal and the receiving side terminal. When the other party of the receiving side mobile terminal presses a call key, a response message is transmitted to the origination side mobile terminal and a call connection is made through the exchange. Accordingly, the caller and the receiver make communication.

Description

MESSAGE TRANSMISSION METHOD FOR MOBILE COMMUNICATION TERMINAL DEVICE}

The present invention relates to a mobile communication terminal, and more particularly, to a message transmission method.

As the spread of mobile communication terminals becomes more common, the needs of subscribers are becoming more diversified, and in order to satisfy them, telcos are providing various services.

The services provided to the mobile communication terminal can be largely classified into a voice call service and a data communication service.

Short message service (SMS), one of data communication services, is emerging as an important service along with voice call service.

Short message service has a broadcast transmission service that can simultaneously transmit the same message to a plurality of subscribers the same way of sending and receiving messages in a 1: 1 communication with the other party.

In general, when a message transmission process is described in a mobile communication terminal, a sender transmits a message to a receiver and receives and views a message from the receiver.

However, the conventional message transmission technique has a problem that it is not possible to know whether the other party has confirmed the message if the real time is not guaranteed through the message center or if there is no response message from the other party.

In addition, the prior art may be missing in the state that the message transmission is not made, there is a problem that there is a limit in the amount of message transmission.

Accordingly, the present invention has been invented to deliver a message in real time using DTMF (Dual Tone Multi Frequency; complex frequency code) when the call is inconvenient because it is a situation such as a conference or performance during a voice call to improve the conventional problem. An object of the present invention is to provide a message transmission method of a mobile communication terminal.

1 is a block diagram of a system for message transmission in an embodiment of the present invention.

Figure 2 is an exemplary view showing the structure of a DTMF burst message in the practice of the present invention.

3 is a signal flow diagram illustrating a message transmission process from a counterpart when called in an embodiment of the present invention.

Figure 4 is a signal flow diagram illustrating a message transmission process to the other side when a call in an embodiment of the present invention.

Figure 5 is an exemplary view showing a keypad of the cheonjiin method.

Explanation of symbols on the main parts of the drawings

110,130: mobile communication terminal 120: switchboard

In order to achieve the above object, the present invention provides a method for determining a response message from a counterpart when a call is connected, and transmitting a DTMF burst message from the counterpart in a call connection state in which there is a response message from the counterpart. Determining whether the message is set, decoding the corresponding message to display a message, and transmitting a DTMF burst message to the counterpart when receiving the message. do.

In addition, in order to achieve the above object, the present invention provides a method for determining a response message from a counterpart when a call is connected in a mobile communication terminal, and determining whether a DTMF burst message transmission is set to the counterpart if there is no response message from the counterpart. And transmitting a DTMF burst message to the counterpart, and if the DTMF burst message is received from the counterpart, decoding the DTMF burst message and displaying the message.

That is, in the present invention, the calling party and the receiving mobile terminal are actually connected in the same way as the voice call, and when the calling party or the receiving subscriber presses a specific key for setting the DTMF burst message, the mobile communication terminal transmits the DTMF burst message. When it recognizes and the user presses the corresponding character key, it transmits DTMF tone of the character. In this case, a predetermined DTMF tone may be continuously transmitted for the transmission of the text message.

The text message transmission using the DTMF tone basically uses a send DTMF (Dual Tone Multi-Frequency) burst message of the IS-2000 specification. For this purpose no modifications are made to the exchange.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a block diagram of a system for transmitting DTMF tone messages according to an embodiment of the present invention. As shown in FIG. 1, the calling mobile terminal 110 and the receiving mobile terminal 130 are connected through an exchange 120. After a call connection is established, when the call is connected, the DTMF (Dual Tone Multi Frequency) burst message can be exchanged.

It is assumed that the calling mobile terminal 110 and the receiving mobile terminal 130 have DTMF burst message transmission and decryption functions.

In an embodiment of the present invention having such a configuration, when the calling mobile communication terminal 110 dials the receiving mobile communication terminal 130 and the switch 120 establishes a call connection, the receiving mobile communication terminal 130 is off-hook. determining whether the call is off-hook, and when the receiving side mobile communication terminal 130 is off-hooked and the call is connected, the user proceeds with the other party and the calling mobile terminal 110 moves to the receiving side. Determining whether a DTMF burst message is received at the communication terminal 130, reading and displaying a character corresponding to a DTMF tone when the DTMF burst message is received at the receiving mobile terminal 130, and When the user sets a DTMF burst message transmission by pressing a specific key, converting the characters input by the user into DTMF tones and transmitting the DTMF tones to the receiving mobile terminal 130. And configured.

In addition, in the embodiment of the present invention, when the calling mobile communication terminal 110 dials the receiving mobile communication terminal 130 and the exchange 120 establishes a call connection, the receiving mobile communication terminal 130 is off-hook ( determining whether the call is off-hook, and when the receiving mobile communication terminal 130 remains off-hooked and the call cannot be connected, the calling mobile communication terminal 110 transmits a DTMF burst message by the user. Determining whether to set, and when the user sets a DTMF burst message transmission by pressing a specific key, the calling mobile terminal 110 converts a character input by the user into a corresponding DTMF tone, thereby receiving the mobile terminal 130. ), And the receiving mobile terminal 130 automatically switches to the off-hook state when the DTMF burst message is transmitted while the call is not connected. High DTMF tones are configured to perform the steps of reading and displaying the corresponding characters.

In the above, the calling mobile terminal 110 or the receiving mobile terminal 130 adds prefix and surfix to the call message or transmits a menu setting message set by the user to the counterpart when the DTMF burst message transmission is set. .

In the above, the DTMF burst message is transmitted using the send DTMF burst message standard of the IS-2000 specification.

The data structure of the DTMF burst message is composed of 8 bits of NUMDIGITS, 3 bits of DTMFONLENGTH, and 3 bits of DTMFOFFLENGTH, as shown in the example of FIG. DTMFONLENGTH and DTMFOFFLENGTH are bits for setting a character transmission time.

A number of DTMF burst messages using the data structure as shown in the example of Fig. 2 (a) can be continuously transmitted, which is 4 bit DIGITi, 1 bit of CONREFINCL, 0 or 8 bit as shown in Fig. 2 (b). Can be set using a data structure consisting of CONREF.

The operation and effect of the embodiment of the present invention configured as described above will be described with reference to FIGS. 3 to 5.

Figure 3 is a signal flow diagram showing the message transmission process from the other side when the call, Figure 4 is a signal flow diagram showing the message transmission process to the other side when the call, Figure 5 is an exemplary view showing a keypad of the heaven and earth.

First, a process of transmitting a DTMF burst message for a call from the calling mobile terminal 130 by the receiving mobile terminal 130 will be described with reference to the signal flowchart of FIG. 3.

When the caller enters the telephone number of the receiving mobile communication terminal 130 from the calling mobile communication terminal 110 and presses the call key, the switch 120 checks the channel and checks the channel with the calling mobile communication terminal 110. A call connection between the receiving mobile terminal 130 is established.

At this time, when the other party presses the call key in the receiving mobile terminal 130, a response message is transmitted to the calling mobile terminal 110 and the call is connected through the exchange 120.

Thus, the call between the sender and the receiver can be made.

If the receiver cannot make a call due to a meeting or a performance, the receiver presses a specific key for transmitting a DTMF burst message while the call is connected to the caller or transmits the DTMF burst message by menu setting. Will be announced.

In this case, when the receiver presses a specific key to set the DTMF burst message transmission, the receiving mobile terminal 130 inserts a DTMF tone corresponding to a character pressed by the receiver into the call message and calls the prefix or surfix in the message transmission step. Will be added to

Therefore, when the call message is received from the receiver mobile communication terminal 130, the calling mobile terminal 110 determines that the prefix or the surfix is added to determine the DTMF burst message transmission and inserts the DTMF tones inserted into the call message. Will read and display the corresponding character.

In addition, when a call is established with the receiving mobile terminal 130 but the call is not connected, a process of transmitting a DTMF burst message from the calling mobile terminal 110 will be described with reference to the signal flowchart of FIG. 4. .

When the caller enters the telephone number of the receiving mobile communication terminal 130 from the calling mobile communication terminal 110 and presses the call key, the switch 120 checks the channel and checks the channel with the calling mobile communication terminal 110. A call connection between the receiving mobile terminal 130 is established.

At this time, when the other party presses the call key in the receiving mobile terminal 130, a response message is transmitted to the calling mobile terminal 110 and the call is connected through the exchange 120.

Thus, the call between the sender and the receiver can be made.

If the receiver cannot continue the call because the call is not available due to a conference or performance viewing, the caller sets a DTMF burst message transmission to the calling mobile terminal 110 by pressing a specific key for transmitting the DTMF burst message.

At this time, when the sender presses a character to be transmitted to the receiving mobile terminal 130 while the DTMF burst message transmission is set, the calling mobile terminal 110 inserts a DTMF tone corresponding to the text into the call message and transmits the message. Will add a prefix or surfix to the call message.

Therefore, when the call message is received from the caller mobile terminal 110, the receiving side mobile terminal 130 determines that the prefix or surfix is added and determines that the DTMF burst message is transmitted, thereby automatically off-hooking. -hook) will read the DTMF tones embedded in the call message and display the corresponding text.

The caller may transmit a DTMF burst message and set it at the time of call so as to recognize the message call to the receiving mobile terminal 130.

On the other hand, when transmitting a DTMF burst message using the cheonjiin method keypad as shown in the example of FIG. ', Enter the number key' 437 ', the corresponding letter' grade ', enter the number key' 0211 'the corresponding letter' Me ', enter the number key' 0023 'to enter the corresponding letter' mo '.

Therefore, the mobile communication terminal 110 or 130 transmits DTMF tones of the corresponding characters to display the characters as characters.

In addition, the DTMF message transmission mode is set to each other by pressing a specific key in the calling or receiving mobile terminal 110 or 130, and the DTMF message transmission operation is performed by pressing an end key on an arbitrary side while all the messages are transmitted. Will be terminated.

As described in detail above, the present invention can transmit a message to a counterpart in a call connection state, thereby real-time transmission is guaranteed without missing a message, and it is possible to reliably know whether the counterpart is received.

In addition, since the present invention transmits a message in a call connection state, there is an effect of eliminating the limitation of the conventional message transmission amount.

Claims (5)

In the mobile communication terminal, Setting a DTMF burst message transmission mode; When the DTMF burst message transmission is set, inserting and transmitting a corresponding DTMF tone in a call message for a user's input character; And receiving and displaying a character corresponding to a DTMF tone when a DTMF bus message is received from a counterpart in a state in which the DTMF burst message transmission is set. The method of claim 1, wherein setting up DTMF burst message transmission A method for transmitting a message in a mobile communication terminal, characterized in that set in the voice call connection or the call connection state at the calling party or the receiving party. The method according to claim 1 or 2, wherein a specific bit of prefix or surfix is added to the transmission message to inform the counterpart of the DTMF burst message transmission setting. The method of claim 1, wherein setting up DTMF burst message transmission Method of transmitting a message of a mobile communication terminal, characterized in that the receiver automatically switches to the Off-Hook state when the sending side sets DTMF burst message transmission when the receiving side is in the on-hook state. . The method of claim 1, wherein the DTMF burst message is A method for transmitting a message in a mobile communication terminal, comprising information on a transmission character, a transmission character length, a transmission time of each transmission character, and the number of transmission characters.