KR100585742B1 - Information transfer method for mobile communication terminal - Google Patents

Abstract

The present invention relates to a method for transferring information between mobile communication terminals. In the related art, DTMF information merely represents key values corresponding to numbers and special characters. However, a message made by combining these key values is used, but there is a problem in that the application range is limited. In view of the above problems, the present invention provides a method comprising: transmitting DTMF information corresponding to a pressed key of a keypad in a DTMF burst message to a switch after the calling terminal and the receiving terminal are connected; Receiving the DTMF burst message at the exchange, determining DTMF information included in the message, converting the DTMF information into a flash information message set to a keypad function, and transmitting the same to a receiving terminal; When the receiving terminal receives the flash information message and determines the received flash information message as a message related to a keypad function, the receiving terminal reads an information field to determine and process information corresponding to a pressed key. By transmitting and receiving between the terminal in real time using the message and the flash information message, there is an effect of providing a variety of additional services through the point-to-point data communication while being provided with the already established connection service.

Description

Information transfer method between mobile communication terminals {INFORMATION TRANSFER METHOD FOR MOBILE COMMUNICATION TERMINAL}

Figure 1 is an exemplary view showing a system configuration for a conventional DTMF burst message delivery.

2 is an exemplary view showing a system configuration for a method for transmitting information between mobile communication terminals of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transferring information between mobile communication terminals, and more particularly, to a method for transferring information between mobile communication terminals by converting DTMF information into a format required for message delivery.

In general, a telephone number that a user presses when making a phone call is converted into DTMF information and transmitted to the exchange through a base station to be used to call a counterpart terminal. DTMF information is used to indicate the calling party number at the counterpart terminal.

According to the conventional air interface standard (TIA-EIA-IS-2000-5-A) between a terminal and a base station, a function for transmitting information to a base station using DTMF is defined. The structure of a DTMF burst message is as follows:

field NUM_DIGITS 8 DTMF_ON_LENGTH 3 DTMF_OFF_LENGTH 3 DIGITi 4 CON_REF_INCL One CON_REF 0 or 8

DTMF Burst Message transmits DTMF information of the set value in binary data format.

1 is an exemplary diagram showing a system configuration for a conventional DTMF burst message delivery.

The mobile communication terminal 11 converts the key value pressed by the user into DTMF information and transmits the DTMF information to the switch 13 through the base station 12 in a DTMF burst message.

The exchange 13 receives the DTMF burst message from the mobile communication terminal 11 and makes a call to the counterpart terminal 14 corresponding to the telephone number, and the counterpart terminal 14 receives the call but does not receive DTMF information. DTMF information is also used to use services related to phone number entry, ARS use, caller ID display, and so on.

When using ARS, DTMF information is used to select a desired service, and the caller ID display service is used to display a caller's telephone number.

However, in the prior art as described above, since DTMF information merely represents key values corresponding to numbers and special characters, it is useful to provide a variety of additional services by combining and using these key values into a characteristic message format. Therefore, although a message created by combining the key values is used, there is a problem in that the application range is limited.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a method for transferring information between mobile communication terminals, which converts DTMF information into a format required for message delivery, thereby transferring information between terminals.

In order to achieve the above object, the present invention includes the steps of: transmitting DTMF information corresponding to a pressed key of a keypad in a DTMF burst message to a switch after the calling terminal and the receiving terminal are connected; Receiving the DTMF burst message at the exchange, determining DTMF information included in the message, converting the DTMF information into a flash information message set to a keypad function, and transmitting the same to a receiving terminal; When the receiving terminal receives the flash information message and determines that the received flash information message is a message related to a keypad function, the receiving terminal reads an information field to determine and process information corresponding to a pressed key.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exemplary view showing a system configuration for a method for transferring information between mobile communication terminals according to the present invention. As shown in FIG. 2, an originating terminal 21 for transmitting DTMF information corresponding to a key pressed by a user in a DTMF burst message is transmitted. Wow; An exchanger (23) for receiving the DTMF burst message and converting the DTMF information contained therein into a flash information message; Receiving the flash information message is composed of a receiving terminal 24 to confirm the message.

The calling terminal 21 transmits DTMF information corresponding to the key pressed by the user in a DTMF burst message.

The DTMF burst message is transmitted to the exchange 23 via the base station 22, and the exchange 23 converts the DTMF information included in the received DTMF burst message into a CHARi value of the flash information message, and converts the record type into the keypad function. After setting, transfer to the receiving terminal 24.

The receiving terminal 24 receives the flash information message, decodes the CHARi value, and checks the message transmitted by the calling terminal 21.

Hereinafter, an operation of transmitting a message using DTMF information between the calling terminal 21 and the receiving terminal 24 will be described.

The user makes a call to the other party and the calling terminal 21 and the receiving terminal 24 are in a call connection state. Suppose a user transfers a message to a party by pressing a key on the keypad in a call connection state. Alternatively, the other party can press a key on the keypad to deliver a message to the user.

When the user presses a key, the calling terminal 21 transmits DTMF information corresponding to the pressed key in a DTMF burst message. The DTMF burst message is delivered to the exchange 23 via the base station 22, and the exchange 23 determines the DTMF information included in the DTMF burst message, converts it into a flash information message, and transmits it to the receiving terminal 24.

The structure of the flash information message is as follows.

Information Record Type of Keypad Facility Information Record Type Record Type (binary) Message Type Paging Channel Forward Traffic Channel Keypad facility 00000011 Flash No Yes

Type-Specific Field of Keypad Facility

(* One or more occurrences of the following field)

Type-Specific Field Length (bits) CHARi 8

The CHARi field of the flash information message set as the keypad function in the record type includes information corresponding to a key pressed in the calling terminal 21.

The receiving terminal 24 receives the flash information message, checks the record type, determines whether it is set as a keypad function, and confirms the type of the message.

If it is determined that the flash information message related to the keypad function, the information of the CHARi field is read to determine the information corresponding to the pressed key transmitted from the calling terminal 21.

Like the operation of transferring the key value from the calling terminal 21 to the receiving terminal 24, the receiving terminal 24 also transmits the key value to the calling terminal 21. As such, when the user and the other party are in a voice call with each other, the user presses a key to deliver a simple message.

As described in detail above, the present invention is an effect of providing a variety of additional services through point-to-point data communication while receiving a predetermined connection service by transmitting and receiving a small amount of data between the terminals in real time using a DTMF burst message and a flash information message There is.

Claims (2)

After the caller terminal and the caller terminal are connected, transmitting the DTMF information corresponding to the pressed key of the keypad to the exchange in a DTMF burst message; Receiving the DTMF burst message at the exchange, determining DTMF information included in the message, converting the DTMF information into a flash information message set to a keypad function, and transmitting the same to a receiving terminal; And when the receiving terminal receives the flash information message and determines that the received flash information message is a message related to a keypad function, reading the information field and determining and processing information corresponding to a pressed key. Information transfer method between terminals. The method of claim 1, wherein the flash information message is A method for transferring information between mobile communication terminals, characterized by setting a keypad function for a record type and including information corresponding to a key pressed in a calling terminal in an information field.

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