JPH0744484B2 - Telephone / data communication mode switching method in wireless communication device - Google Patents

Description

The present invention relates to a telephone / data communication mode switching method in a wireless communication device having a wireless communication function and a data communication function.

[Prior Art] A conventional wireless communication device for a car telephone device is, for example, published by Nikkei McGraw-Hill in Nikkei Electronics, No. 19
As discussed in No. 78/6/26, pages 58 to 84, “Mobile Phones for Commercialization”, only telephone communication can be performed, and data communication and telephone communication are combined. No consideration is given to the implementation of services.

[Problems to be Solved by the Invention] Since the above-mentioned conventional technique only performs telephone communication and does not consider the implementation of a service that combines data communication and telephone communication, data communication is performed using a wireless telephone device. There was a problem that could not answer the needs of doing. Even if data communication using a wireless telephone device has been allowed so far, it is easy to switch from the data communication mode to the telephone communication mode or from the telephone communication mode to the data communication mode. I couldn't do it.

An object of the present invention is to easily perform switching from a data communication mode to a telephone communication mode and from a telephone communication mode to a data communication mode when data communication or telephone communication is selectively performed with a partner. A method of switching a telephone / data communication mode in a wireless communication device is provided.

[Means for Solving the Problems] The above-mentioned object is to be transmitted to the other party in a state where packet data communication is being performed in each wireless communication device,
For the packet data communication including the voice call request, the other party waits for the reception of a packet reception response from the other party to allow the voice call request or while the packet data communication is being performed. While waiting for the packet data including the voice call request sent from the device to be switched to the telephone communication mode by the accommodation connection to the wireless transmitter / receiver, the telephone communication is being performed. Then, it is achieved by waiting for the detection of disconnection of the carrier from the other party and switching to the data communication mode by forcibly accommodating connection to the wireless transceiver of the packet communication unit.

[Operation] When a call request is made by the device itself or the other party while packet data communication is being performed (data communication mode), a packet including a voice call request from the device itself or the other party. The data is sent out. That is, in each wireless communication device, for packet data including a voice call request sent to the other party,
Sent from the other party while waiting for a packet reception response from the other party to accept the voice call request, or while packet data communication is being performed,
It is only necessary to switch from the data communication mode to the telephone communication mode by waiting for the packet data including the voice call request to be received and connecting and receiving the wireless communication unit of the handset. Is. On the other hand, when telephone communication is in progress (telephone communication mode), the connection to the wireless transceiver of the packet communication unit is forcibly made after waiting for the carrier disconnection from the other side, and When the mode is switched to the data communication mode, the communication mode can be easily switched.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a block diagram showing an embodiment of a wireless communication device according to the present invention. In FIG. 1, ANT is an antenna, rt is a transmission / reception switching relay contact, R is a wireless receiver, T is a wireless transmitter,
rv is communication mode switching relay contact, SP is speaker, MIC is microphone, D is demodulator, M is modem, CPU
Microprocessor, CRT is a display, RT is duplexer relay, RV communication mode switching relay, PTT is sending switch key, DC data communication instruction key, AN _o ~AN _x is information input key, PC is a general-purpose personal computer , 10 are packet communication units. The wireless communication device shown in FIG. 1 is a conventional antenna.
For a wireless telephone device (for example, 400 MHz F3 transceiver) including an ANT, a transmitter T, a receiver R, and a voice input / output unit including a speaker SP and a microphone MIC, a modem is provided near the voice input / output unit. M, demodulator D, support for packet communication control procedures including error correction and retransmission procedures (for example, personal computer recommended communication method recommended by the Ministry of Posts and Telecommunications), control information input / output control, and external data communication equipment (for example, Microprocessor CPU to realize interconnection with personal computer PC, FMX, word processor) and display CRT
And a packet communication unit 10 including

2 (a), (b), and (c) are operation sequence example diagrams when data communication is performed by the wireless communication device. FIG. 2 (a) shows a case where there is no carrier in the corresponding channel when transmitting / receiving data. In this case, in the wireless communication devices A and B having the configuration shown in FIG. 1, a message (for example, "communication OW?") Is sent from the wireless communication devices A to B.
The case of sending a message will be described. First, when the data communication instruction key DC for instructing the start of the data communication of the packet communication unit 10 is pressed in the wireless communication device A, the microprocessor CPU recognizes the ON of the DC key and recognizes the antenna ANT-contact rt-wireless. Receiver R-lead 3-It is confirmed by the route of the microprocessor CPU that there is no carrier in the corresponding channel, and the transmission / reception switching relay RT is operated. When the relay RT operates, the antenna ANT-contact rt-wireless transmitter T-lead 5-contact rv-modem M-read 2-microprocessor CPU sends a packet including a message "communication OK" to the wireless communication device B.
To send to. When this packet is sent,
The microprocessor CPU recognizes the end of the transmission and restores the transmission / reception switching relay RT, whereby the path of the antenna ANT-contact rt-radio receiver R-lead 4-contact rv-demodulator D-lead 1 is closed. The wireless communication device transits from the data transmission state to the data reception state.

When a packet including the message "communication OK?" Sent to one wireless communication device B arrives at the wireless communication device B, antenna ANT-contact rt-wireless receiver R-lead 3
The carrier is detected on the path of the microprocessor CPU, and then the packet communication unit 10 starts preparation for receiving a packet that arrives via the demodulator D. Then, the packet arriving via this demodulator D is received and decoded by the microprocessor CPU, the message "Receive OK?" Is taken out from the packet, and the microprocessor CPU-lead 11-personal computer PC Displayed on the display in the route. Further, the packet including the message “AK” indicating that the packet has been normally received to the wireless communication device A is sent to the wireless communication device A by the same method as described above. The wireless communication device A receives this by the same method as described above,
For example, the display CRT displays "Received by other station".

Further, FIG. 2B shows a case where there is a carrier in the corresponding channel when transmitting / receiving data. In this case, when transmitting from the wireless communication devices A to B, it is confirmed that there is no other wireless communication device transmitting, and if there is, it waits and transmits. FIG. 2 (c) shows the case of relaying data. In this case, the wireless communication device A
When transmitting a message from the wireless communication device B to the wireless communication device C via the wireless communication device B, the wireless communication device B
It is necessary to have a means for identifying that the packet is a relay packet to the wireless communication device A. In the packet transmitted from the wireless communication device A, the wireless communication device address A, the destination wireless communication device address C, and the relay wireless communication device address B are included. It is realized by a well-known method including.

3 (a) and 3 (b) are operation sequence example diagrams when telephone communication is performed by the wireless communication device. Fig. 3 (a)
Is for sending voice. In this case, the wireless communication device of FIG. 1 is currently using the half-duplex communication system in which bidirectional communication cannot be performed at the same time, and the wireless communication devices A to B having the configuration of FIG. The case of sending will be described. First, the wireless communication device A sends a voice by using the transmission switch key PTT.
When is pressed, the microprocessor CPU recognizes this and transmits a packet including a control message "VO" indicating that this time is a voice call in the same manner as the data communication of FIG. 2A, to the wireless communication device B. To send to. On the other hand, when the wireless communication device B receives the packet including the transmitted message "VO", the wireless communication device B transmits the packet including the message "AK" indicating that the packet has been received, and then switches the communication mode. Operate relay RV, antenna
The path of ANT-contact rt-radio receiver R-contact rv-speaker SP is closed, and preparation is made to output the received audio signal to the speaker. When the wireless communication device A receives the packet including the message “AK” sent from the wireless communication device B, the microprocessor CPU operates the communication mode switching relay RV, and the microphone MIC-contact rv-lead 5
-The path of the wireless transmitter T-contact rt-antenna ANT is closed, the sound from the microphone MIC is sent to the wireless communication apparatus B, and the sound is output from the speaker of the wireless communication apparatus B. This call state is the transmission switch key PT of the wireless communication device A.
Continues while T is pressed.

Further, FIG. 3 (b) shows a case of receiving voice. In this case, the operation for outputting the voice transmitted by the wireless communication device B from the speaker SP of the wireless communication device A is as shown in FIG.
Is the same as.

[Effects of the Invention] As described above, according to the present invention, when data communication and telephone communication are selectively performed with the other party, switching from the data communication mode to the telephone communication mode, telephone communication The mode can be easily switched to the data communication mode.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a wireless communication device according to the present invention, and FIGS. 2 (a), (b), and (c) correspond to each data transmission / reception when performing data communication with the wireless device. When there is no carrier in the channel, when there is also a carrier, and in the case of data relay, an operation sequence example diagram, FIGS. 3 (a) and 3 (b) show the case of each voice transmission when telephone communication is performed by the wireless device. It is an operation sequence example figure in the case of voice reception. ANT ... antenna, R ... wireless receiver, T ... wireless transmitter, SP ... speaker / receiver speaker, MIC ... similar microphone, 10 ... packet communication part, D ... demodulator, M ... Modem, CRT ... Display, CPU ... Microprocessor, PC ... General-purpose personal computer,
RT …… Transmission / reception switching relay, rt …… Transmission / reception switching relay contact, RV
...... Communication mode switching relay, rv …… Call status switching relay contact, PTT …… Transmission switching key, DC …… Data communication instruction key, AN _{o to} AN _x …… Information input key.

Claims (1)

[Claims] 1. In a telephone communication mode in which a radio transmitter / receiver is selectively accommodated and connected to a transmission / reception unit for transmitting / receiving voice to / from a communication partner, telephone communication is performed with the communication partner. On the other hand, in the data communication mode in which the packet communication unit having the error correction function and the retransmission procedure is selectively accommodated and connected,
A method of switching a telephone / data communication mode in a wireless communication device, wherein packet data communication is performed with a partner side, wherein the partner side is in a state where packet data communication is being performed in each wireless communication device. Sent to the
Waiting for a packet reception response to the packet data including the voice call request from the other party, which indicates that the voice call request is permitted, or while packet data communication is being performed, from the other party Wait for the packet data sent including the voice call request to be received,
While the communication mode is switched to the telephone communication mode by the accommodation connection to the wireless transceiver of the handset, while the telephone communication is being performed, the wireless transceiver of the packet communication unit waits for the disconnection of the carrier from the other party. A method for switching a telephone / data communication mode in a wireless communication device, wherein the communication mode is switched to a data communication mode by a forced accommodation connection.