JP2001218263A - Mobile communication terminal and message communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile communication terminal and a message communication method, with which a reply message can surely be returned from a reception terminal to a transmitter terminal without charging the reception terminal. SOLUTION: This method includes storing a transmission message into an incoming/outgoing sub address of a CC call set massage sent from a transmitter terminal to a receiver terminal as character information, in the case of a call from the transmitter terminal conducts message transmission from the transmitter terminal to the receiver terminal and storing a reply message into a fixedly shifted address of a CC cut-off message sent from the receiver terminal to the transmitter terminal as character information, when line interference can return the reply message from the receiver terminal to the transmitter terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal having a simple character transmission service function for transmitting a message using a subaddress in a call setup message and a message communication method, and more particularly to a method for charging a receiving terminal. The present invention relates to a mobile communication terminal and a message communication method capable of reliably returning a response message from a receiving terminal.

[0002]

2. Description of the Related Art Generally, PHS (Personal Handyphone S)
In mobile communication terminals such as ystem), CC (call control
l) A simple character transmission service using a message subaddress is provided.

[0003] This simple character transmission service is a service in which character information is stored in an incoming / outgoing subaddress of a CC call setup message and a message is transmitted in one direction from a transmitting terminal to a receiving terminal. FIG. 5 shows a conventional message communication method using the simple character transmission service.

That is, the transmitting terminal first creates a message to be transmitted to the receiving terminal, and performs a calling operation. As a result, the transmitting terminal transmits the created message to C
Character information is stored in the incoming / outgoing sub-address of the C-call setting message and transmitted to the receiving terminal.

[0005] Then, the receiving terminal receiving the CC call setup message in which the message is stored at the destination / calling subaddress recognizes that it is a simple character transmission, and transmits a CC calling message to the calling terminal. To send a CC response message.

The transmitting terminal that has received the CC response message transmits a CC response confirmation message to the receiving terminal, and the receiving terminal that has received the CC response confirmation message recognizes that the received message is valid.

[0007] Thereafter, the receiving terminal emits an acknowledgment tone and transmits a CC facility message composed of a PB sound to the transmitting terminal, whereby the receiving end confirms the acknowledgment tone at the receiver. Then, CC from the receiving terminal
Send a disconnect message to the sending terminal.

[0008] Upon receiving the CC disconnection message, the transmitting terminal transmits a CC release message to the receiving terminal.
The receiving terminal that has received the C release message ends the communication processing by the simple character transmission service by transmitting a CC release completion message to the transmitting terminal.

As described above, the conventional message communication method using the simple character transmission service is a service for transmitting a message in one direction from a transmitting terminal to a receiving terminal.
Therefore, the receiving terminal cannot receive the response message to the transmitting terminal only by receiving the message transmitted from the transmitting terminal.

Therefore, a message communication method as shown in FIG. 6 has been considered to enable a response message to a message transmitted from the transmitting terminal to be returned from the receiving terminal to the transmitting terminal.

That is, the transmitting terminal first creates a message to be transmitted to the receiving terminal, and performs a calling operation. As a result, the transmitting terminal transmits the created message to C
Character information is stored in the incoming / outgoing sub-address of the C-call setting message and transmitted to the receiving terminal.

The receiving terminal that has received the CC call setup message in which the message is stored at the destination / originating subaddress recognizes that the transmission is simple character transmission, and transmits a CC calling message to the calling terminal. To send a CC response message.

The transmitting terminal that has received the CC response message transmits a CC response confirmation message to the receiving terminal, and the receiving terminal that has received the CC response confirmation message recognizes that the received message is valid.

[0014] Thereafter, the receiving terminal emits an acknowledgment tone and transmits a CC facility message consisting of a PB sound to the transmitting terminal, whereby the receiving end confirms the acknowledgment tone at the receiver. Then, CC from the receiving terminal
Send a disconnect message to the sending terminal.

[0015] Upon receiving the CC disconnection message, the transmitting terminal transmits a CC release message to the receiving terminal.
The receiving terminal that has received the C release message transmits a CC release completion message to the transmitting terminal.

The operation so far is the same as the communication processing shown in FIG. However, in the message communication method shown in FIG. 6, after the receiving terminal transmits the CC release completion message and completes the line disconnection, the transmitting terminal transmits a preset setting message (response message) to the transmitting terminal. An automatic call operation is performed for the call.

As a result, the receiving terminal stores the response message as character information in the call receiving / calling subaddress of the CC call setup message and transmits it to the transmitting terminal.

Then, the transmitting terminal that has received the CC call setup message in which the message is stored in the destination / originating subaddress recognizes that it is a simple character transmission, and transmits a CC calling message to the receiving terminal. To send a CC response message.

The receiving terminal that has received the CC response message transmits a CC response confirmation message to the transmitting terminal, and the transmitting terminal that has received the CC response confirmation message recognizes that the received message is valid.

Thereafter, the transmitting terminal emits a reception confirmation sound and transmits a CC facility message composed of a PB sound to the reception terminal, whereby the reception confirmation sound is confirmed by the receiver. Then, CC from the transmitting terminal
Send a disconnect message to the receiving terminal.

The receiving terminal that has received the CC disconnection message transmits a CC release message to the transmitting terminal,
The transmitting terminal that has received the C release message ends the communication processing by the simple character transmission service by transmitting a CC release completion message to the receiving terminal.

[0022]

However, as shown in FIG. 6, after the receiving terminal receives the message from the transmitting terminal, the line is temporarily disconnected, and the receiving terminal automatically calls and transmits the message. In the message communication method of transmitting a response message to the terminal on the side, 1) the message receiving terminal is charged for returning the response message without the user's knowledge. 2) CC call setting transmitted from the terminal on the message transmitting side. If no message number is stored in the message, the message receiving terminal cannot automatically call the message transmitting terminal and send a response message. 3) When the response message is automatically returned from the message receiving terminal. Depending on the status of both terminals (out of service area, etc.), it is unknown whether the reply has been completed or not.

SUMMARY OF THE INVENTION It is an object of the present invention to ensure that a response message can be returned from a receiving terminal to a transmitting terminal without being charged to the receiving terminal.

Another object of the present invention is to provide a mobile communication terminal that can reliably return a response message from a receiving terminal to a transmitting terminal without being charged to the receiving terminal.

Another object of the present invention is to provide a message communication method capable of reliably returning a response message from a receiving terminal to a transmitting terminal without being charged to the receiving terminal.

[0026]

According to the present invention, there is provided a mobile communication terminal having a simple character transmission service function for transmitting a message using a subaddress in a call setup message. Receiving means for receiving a message transmitted by the service function; storage means for previously storing a response message to the message received by the simple character transmission service function; and a message transmitted by the simple character transmission service function by the receiving means. Receiving the response message stored in the storage unit in a fixed shift of the disconnection message after confirming the validity of the received message, and returning the response message to the transmitting terminal. Is done.

As described above, according to the mobile communication terminal of the present invention, the response message is returned from the receiving terminal to the transmitting terminal by using the fixed shift of the disconnection message. Thus, the response message can be reliably returned from the receiving terminal to the transmitting terminal.

Further, the message communication method of the present invention comprises:
In a message communication method using a simple character transmission service function for transmitting a message from a transmitting terminal to a receiving terminal using a sub-address in a call setting message, a message is stored from the transmitting terminal to a sub-address in the call setting message. After receiving the call setup message storing the message in the sub-address, the receiving terminal confirms the validity of the received call setup message, and then stores the message in the fixed shift of the disconnection message. It is configured to store a response message and return it to the transmitting terminal.

According to such a configuration, the response message is returned from the receiving terminal to the transmitting terminal using the fixed shift of the disconnection message transmitted from the receiving terminal to the transmitting terminal when the line is disconnected. The response message can be reliably returned from the receiving terminal to the transmitting terminal without being charged to the terminal.

[0030]

Embodiments of a mobile communication terminal and a message communication method according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a system configuration diagram showing a schematic configuration of a mobile communication terminal to which a mobile communication terminal and a message communication method according to the present invention are applied.

Here, a mobile communication terminal of PHS will be described as an example, but a CC call setup message and a CC
The present invention can be applied to other communication systems as long as they employ a disconnect message.

In FIG. 1, a mobile communication terminal 10 according to this embodiment includes a radio unit 1 having an antenna 11, a modem unit 2, a TDMA unit 3, a communication unit 4, a control unit 5, and a memory unit 6. It is composed.

Here, a radio carrier signal arriving from a PHS base station (not shown) is received by an antenna 11,
The signal is input to the receiving circuit (RX) 13 via the high-frequency switch (SW) 12 of the wireless unit 1.

In the receiving circuit 13, the received radio carrier signal is mixed with the local oscillation signal generated from the synthesizer 14 and down-converted into a received intermediate signal. The local oscillation frequency generated by the synthesizer 14 is instructed by the control unit 5 according to the radio channel frequency.

Further, the radio section 1 is provided with a reception field strength detection section (RSSI) 16. The reception electric field strength detection section 16 detects the reception electric field strength of the wireless carrier signal arriving from the PHS base station, and the detected value is transmitted to the control section 5.
Will be notified.

The reception intermediate frequency signal output from the reception circuit 13 is input to a demodulation circuit (DEM) 21 of the modem unit 2. The demodulation circuit 21 digitally demodulates the received intermediate frequency signal, thereby reproducing the digital demodulated signal.

TDMA decoding circuit 31 of TDMA section 3
Separates the digital demodulated signal for each reception time slot. Then, in accordance with an instruction from the control unit 5, a digital communication signal inserted in a time slot allocated to the own station is extracted, and the extracted digital communication signal is input to the communication unit 4.

On the other hand, the transmission data transmitted through the control channel and the unrestricted digital data transmitted through the traffic channel are input to the control unit 5.

The communication unit 4 includes an ADPCM transcoder 4
1 and a PCM codec 42.

The ADPCM transcoder 41 demodulates the digital speech signal. The PCM codec 42 converts the demodulated digital call signal into an analog call signal. The analog call signal is amplified by a receiving amplifier (not shown) and then output from a speaker (receiver) 43.

On the other hand, the speech voice input to the microphone 44 is amplified by a speech amplifier (not shown) in the speech unit 4 and then converted into a digital speech signal by the PCM codec 42. Then, the digital transmission signal is subjected to an encoding process in the ADPCM transcoder 41, and is input to the TDMA unit 3 as a digital communication signal.

In the TDMA encoding circuit 32, the A
The digital signal output from the DPCM transcoder 41 is inserted into the transmission time slot specified by the control unit 5 and multiplexed, and is multiplexed.
D) Input to 22.

The modulation circuit 22 digitally modulates the transmission intermediate frequency signal with the multiplexed digital communication signal output from the TDMA encoding circuit 32, and transmits the modulated transmission intermediate frequency signal to the transmission circuit (TX) 15 of the radio unit 1. input.

The transmission circuit 15 mixes the modulated transmission intermediate frequency signal with the local oscillation signal generated from the synthesizer 14, upconverts it to a radio carrier frequency, and further amplifies the signal to a predetermined transmission power level. Then, the radio carrier signal output from the transmission circuit 15 is transmitted from the antenna 11 via the high frequency switch 12 to the PH.
It is transmitted to the S base station.

By the way, the mobile communication terminal 10 of this embodiment has a simple character transmission service function using the incoming / outgoing subaddress of the CC call setup message.

This simple character transmission service is controlled by the simple character transmission service control unit 5a of the control unit 5.
This simple character transmission service is used to store a transmission message as character information in a destination / call subaddress of a CC call setup message transmitted from a transmission terminal to a reception terminal when a call is transmitted from the transmission terminal. Sends a message to the receiving terminal. The receiving terminal that has received the CC call setup message in which the transmission message is stored as character information at the destination / calling sub-address, performs a fixed shift of the CC disconnection message transmitted from the receiving terminal to the transmitting terminal when the line is disconnected. The response message is returned from the receiving terminal to the transmitting terminal by storing the response message as character information.

Therefore, first, the CC call setup message and the CC call
An outline of the format configuration of the disconnection message will be described with reference to FIGS.

FIG. 2 shows a mobile communication device 1 according to this embodiment.
It is a figure which shows the outline of the format structure of CC call setup message employ | adopted by 0.

In FIG. 2, the CC call setup message employed in the mobile communication device 10 of this embodiment includes a "protocol identifier", a "call request", a "call / call originating subaddress information element identifier", and a "call identifier" for setting call control. Incoming / outgoing subaddress length "
It has a storage area for “sub-address type” and “character information”,
In the mobile communication terminal of this embodiment, the transmission message is stored in the storage area of the "character information" of the "arrival / departure subaddress".

Here, character information of up to 20 bytes can be stored in this "character information" storage area. Here, the storage area of the transmission message uses the calling subaddress only when the subaddress is used in the destination number, and usually uses the called subaddress.

FIG. 3 shows a mobile communication device 1 according to this embodiment.
FIG. 7 is a diagram schematically illustrating a format configuration of a CC disconnection message adopted in the C.0.

In FIG. 3, the CC disconnection message employed in the mobile communication device 10 of this embodiment includes “protocol identifier” and “call request” for setting call control, “message type” for setting disconnection, and “message type” for setting disconnection. It is configured to include a “fixed shift” including a code group identifier and “character information”. In the mobile communication terminal of this embodiment, the “fixed shift”
The response message is stored in the storage area of “character information”.

Here, the storage area of this "character information" can store a maximum of 20 bytes of character information.

FIG. 4 shows a mobile communication device 1 according to this embodiment.
It is a sequence chart which shows the message communication processing which used 0.

In FIG. 4, the transmitting terminal and the receiving terminal have the same configuration as the mobile communication device 10 shown in FIG. 1, respectively. In the description of FIG. 4, both the transmitting terminal and the receiving terminal refer to the mobile communication device 10 shown in FIG.

In FIG. 4, the transmitting terminal first creates a transmission message using the key of the key input 53, and stores the created transmission message in the transmission message storage section 6a of the memory section 6. Then, a simple character transmission service controlled by the simple character transmission service control unit 5a of the control unit 5 is selected by a key operation of the key input 53 to perform a calling operation.

As a result, the transmitting terminal stores the transmission message stored in the transmission message storage section 6a of the memory section 6 in the "calling / originating subaddress" of the CC call setting message as shown in FIG. Information ”and transmit it to the receiving terminal.

When the receiving terminal receives the CC call setup message in which the message is stored in the "end / call subaddress", the control unit 5 recognizes that the transmission is the simple character transmission, and sends the CC calling message to the calling terminal. Is transmitted, and then a CC response message is transmitted.

The transmitting terminal that has received the CC response message transmits a CC response confirmation message to the receiving terminal, and the receiving terminal that has received the CC response confirmation message recognizes that the received message is valid.

At the receiving terminal, a sound for confirming reception is sounded by the sounder 51, and a CC facility message composed of a PB sound is transmitted to the transmitting terminal. Confirm with.

As a result, the CC call setup message “
The transmission message stored as “character information” in the “originating subaddress” is displayed on the display unit 54 of the receiving terminal under the control of the control unit 5 of the receiving terminal.

Next, the control unit 5 of the receiving terminal retrieves the response message stored in advance in the response message storage unit 6b of the memory unit 6 and fixes this response message to the CC disconnection message as shown in FIG. Store as "character information" in the shift, and this response message is "character information"
And transmits the CC disconnection message stored in the fixed shift to the transmitting terminal.

When the transmitting terminal receives the CC disconnection message in which the response message is stored as “character information” in the fixed shift, the control unit 5 controls the CC disconnection message.
A response message as "character information" is extracted from the fixed shift of the disconnection message, and the response message is displayed on the display unit 54 of the transmitting terminal.

Then, a CC release message is transmitted from the transmitting terminal to the receiving terminal under the control of the control unit 5 of the transmitting terminal, and the receiving terminal receiving this CC releasing message transmits a CC releasing completion message to the transmitting terminal. The communication processing by the simple character transmission service is completed by transmitting the message to the server.

Incidentally, the following can be adopted as a response message returned from the receiving terminal to the transmitting terminal in this embodiment.

1) Reception Confirmation Message When a normal message is received by the simple character transmission service, for example, a "reception confirmation message" consisting of predetermined character information indicating that the user has previously received a message by the simple character transmission service. Is stored in the response message storage unit 6b of the memory unit 6, and the fixed shift of the CC disconnection message is performed at the timing when the received message becomes valid at the receiving terminal, that is, at the transmission timing of the CC disconnection message. The "reception confirmation message" stored in the response message storage unit 6b is stored and returned to the transmitting terminal.

According to such a configuration, the transmitting terminal can confirm that the message by the simple character transmission service has been normally received at the receiving terminal.

2) Answering Message When the receiving terminal is set to the answering mode, the "answering message" indicating that the answering mode is set to the answering mode is linked to the setting of the answering mode. The response message is stored in the response message storage unit 6b. Then, when a message by this simple character transmission service is received while the receiving terminal is set to the answering mode, the receiving terminal set to the answering mode determines that the received message is valid at the receiving terminal. At this timing, that is, at the transmission timing of the CC disconnection message, the "absent message" stored in the response message storage unit 6b of the memory unit 6 is stored in the fixed shift of the CC disconnection message, and returned to the transmitting terminal. I do.

According to such a configuration, the transmitting terminal can know that the receiving terminal is set to the answering machine mode.

If the user can set an arbitrary "response message" without interlocking with the setting of the absence mode, the "response message" allows the transmitting terminal to recognize the state of the receiving terminal. Can be.

3) Information Service If information such as user profile information is stored in advance in the response message storage unit 6b of the memory unit 6 of the receiving terminal, information required by transmission of the information request message from the transmitting terminal is obtained. Can be collected.

When the receiving terminal adopts a configuration capable of confirming its own location usage, this position information is stored in the response message storage unit 6b of the memory unit 6 of the receiving terminal. You can also.

In this case, the location information of the receiving terminal can be collected by transmitting the location confirmation message from the transmitting terminal.

It is needless to say that the present invention is not limited to the configuration of the portable embodiment described above, and that the present invention can be similarly implemented even if various modifications are made without departing from the gist of the present invention.

[0076]

As described above, according to the present invention,
Since the response message is returned from the receiving terminal to the transmitting terminal using the fixed shift of the disconnection message, the response message is reliably transmitted from the receiving terminal to the transmitting terminal without being charged to the receiving terminal. Is returned.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing a schematic configuration of a mobile communication terminal to which a mobile communication terminal and a message communication method according to the present invention are applied.

FIG. 2 is a diagram schematically showing a format configuration of a CC call setup message employed in the mobile communication device shown in FIG.

FIG. 3 is a diagram schematically illustrating a format configuration of a CC disconnection message employed in the mobile communication device illustrated in FIG. 1;

FIG. 4 is a sequence chart showing a message communication process using the mobile communication terminal shown in FIG.

FIG. 5 is a sequence chart showing a conventional message communication method using a simple character transmission service.

FIG. 6 is a sequence chart showing another example of a conventional message communication method using a simple character transmission service.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Radio | wireless part 11 Antenna 12 High frequency switch (SW) 13 Receiver circuit (RX) 14 Synthesizer 15 Transmitter circuit (TX) 16 Received electric field strength detection part (RSSI) 2 Modem part 21 Demodulation circuit (DEM) 22 Modulation circuit (MOD) 3 TDMA unit 31 TDMA decoding circuit 32 TDMA encoding circuit 4 Talk unit 41 ADPCM transcoder 42 PCM codec 43 Speaker 5 Control unit 5 a Simple character transmission service control unit 51 Sounder 52 Vibrator 53 Key input unit 54 Display unit 56 Data I / F 6 Memory Unit 6a Transmission message storage unit 6b Response message storage unit

Claims (2)

[Claims] 1. A mobile communication terminal having a simple character transmission service function for transmitting a message using a sub-address in a call setup message, receiving means for receiving a message transmitted from the transmitting terminal by the simple character transmission service function. Storage means for pre-storing a response message to the message received by the simple character transmission service function; and validity of the received message when the receiving means receives the message transmitted by the simple character transmission service function. And a return means for storing the response message stored in the storage means in the fixed shift of the disconnection message after the confirmation, and returning the response message to the transmitting terminal. 2. A message communication method using a simple character transmission service function for transmitting a message from a transmitting terminal to a receiving terminal using a subaddress in the call setting message. After storing the message in the sub-address and transmitting it to the receiving terminal, and receiving the call setup message storing the message in the sub-address, the receiving terminal confirms the validity of the received call setup message and then shifts to the fixed shift of the disconnection message. A message communication method, wherein a predetermined response message stored in advance is stored and returned to the transmitting terminal.