JPH05218958A - Dual-mode wireless communication device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to shift to a specific function communication in which a wireless communication system is determined by a simple operation without performing a troublesome operation, thereby improving operability. [Structure] When a specific function switch such as a data communication switch 52 or a confidential communication switch 53 is operated, the mode currently being set is designated by the specific function switch by the function communication control means 22 of the control circuit 20. Determine whether it matches the mode required for specific function communication,
When it is determined that they do not match, the control for changing the wireless communication method to the mode required for the specific function communication is executed, and after changing to the necessary mode by this control, the device is changed to the specific function communication. The state is switched to a state for executing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication device used as a mobile station in a mobile radio communication system such as a car telephone system, a mobile telephone system, a cordless telephone system, etc. The present invention relates to a adopted wireless communication device.

[0002]

2. Description of the Related Art Recently, a system adopting a dual mode wireless communication system has been proposed as one of mobile wireless communication systems. The dual mode is a system that uses both an analog mode and a digital mode.

In the analog mode, the communication device on the transmitting side transmits the carrier wave, for example, FM-modulated by the voice signal and the data, and the communication device on the receiving side receives the modulated wave sent from the transmitting side and performs FM demodulation. This is a method for reproducing voice and data. On the other hand, in the digital mode, a communication device on the transmission side encodes a voice signal and data, a carrier wave is digitally modulated by the encoded signal by, for example, a π / 4 shift DQPSK system, and then transmitted, and a communication device on the reception side. In this system, the modulated wave sent from the transmitting side is received and digitally demodulated, and then the demodulated signal is decoded to reproduce the voice signal and the data. In the wireless communication in the digital mode, a method is used in which a plurality of time slots are time-division multiplexed at one radio frequency and transmitted.

FIG. 10 shows an example of the configuration of this type of system. This system includes a control station CS connected to a wired communication network NW via a wired line CL, and a plurality of base stations BS1, BS2 connected to the control station CS via wired lines CL1 to CL3, respectively. , And a plurality of mobile stations MS1, MS2 ,. The base stations BS1, BS2, ...
2, ... are formed. The mobile stations MS1, MS2, ...
The wireless zones E1, E of the base stations BS1, BS2, ...
.. are connected to the respective base stations BS1, BS2 ,.

In such a configuration, for example, the mobile station M
When a calling operation is performed in S1, this mobile station MS
From 1, a call signal is transmitted using a control channel called an access channel (A-CH). At this time, each base station BS1, BS2, ... Is monitoring the arrival of a calling signal through the access channel. In this state, if the call signal is received by the base station BS1, for example, an empty call channel is selected from among a plurality of analog call channels and digital call channels owned by the base station BS1. The selected call channel is inserted into the call response signal and notified to the mobile station MS1 which is the call source. Then, the selected call channel is set between the base station BS1 and the mobile station MS1, and after this call channel is set, wireless call becomes possible. In other words, whether to select the analog mode or the digital mode as the wireless communication system,
Generally, it is determined by the base stations BS1, BS2, ... In accordance with the availability of the radio communication channel.

By the way, recently, in this type of system, it has been proposed that a mobile station can select a radio communication system. In this system, for example, a mobile station is provided with a mode designating switch, the mode designated by this switch is notified to the base station at the time of making or receiving a call, and the base station informs the vacant speech channel according to the notified mode. Search for and set the call channel. Also, monitor the operation of the mode specification switch even during a call,
When this switch is operated, a mode change request signal is notified to the base station, and the base station searches for an empty radio communication channel according to this request and changes the communication channel.

[0007]

However, the mobile station device conventionally considered to realize such a system has the following problems to be improved. That is, recently, it has been considered to connect a facsimile device to a mobile station device to enable mobile facsimile communication. In this case, the wireless communication method is preferably the analog mode which enables low-error transmission with respect to the analog facsimile communication of G2 or G3 standard. Therefore, for example, when shifting to mobile facsimile communication with the digital mode set, the user has to perform the following operation. That is, first, the mode designation switch of the mobile station apparatus is operated to designate and input the analog mode, whereby the wireless communication system is handed off from the digital mode to the analog mode. Then, after confirming that the mode has been switched to the analog mode, the function switch for data transmission provided in the mobile station device is operated, thereby connecting the facsimile device to the radio communication channel via the mobile station device. .. Finally, the transmission switch of the facsimile is operated to start transmission.

On the other hand, the same operation is required when attempting a confidential call or digital data transmission. That is, it is necessary to set the wireless communication system to the digital mode in order to carry out confidential communication and digital data transmission. Therefore, for example, when attempting a confidential call or digital data transmission from the state where the analog mode is set, the user first operates the mode designating switch to hand off the wireless communication system to the digital mode. After that, it is necessary to operate the function switch for confidential communication or digital data transmission.

As described above, in the conventionally considered apparatus, when performing a specific function communication in which the mode of the wireless communication system is decided, such as a facsimile communication, a confidential communication or a digital data transmission, first, the wireless communication is performed. It was necessary to carry out an operation for changing the communication system to a corresponding mode, and then carry out an operation for carrying out the functional communication such as the above-mentioned facsimile communication or confidential communication. For this reason, the number of operations becomes large for the user, and the operations are troublesome, and therefore, it is easy to cause an erroneous operation.

The present invention has been made in view of the above circumstances, and an object thereof is to perform a specific function communication in which a wireless communication system is determined by a simple operation without performing many troublesome operations. (EN) It is possible to provide a dual-mode wireless communication device that can be changed and can improve operability.

[0011]

In order to achieve the above object, the present invention has an analog mode and a digital mode as a wireless communication system, and has a function of performing wireless communication by selectively using these modes. The dual-mode wireless communication device includes a functional communication request input unit for inputting a specific functional communication execution request whose wireless communication scheme is predetermined, and a functional communication control unit. Then, when a request to execute a specific functional communication is input by the functional communication request input means during wireless communication, control for setting a predetermined wireless communication method corresponding to the specific functional communication Is executed, and then the control for executing the input specific function communication is performed.

According to the present invention, the function communication control means
When a request to execute a specific function communication is input, whether or not the wireless communication method currently being set matches the wireless communication method that is predetermined in correspondence with the specific function communication to which the execution request is input. If it is determined that they do not match, control is performed to set a predetermined wireless communication method corresponding to the specific functional communication, and if they match, the specific functional communication is supported. The control for setting the predetermined wireless communication method is omitted, and the control for performing the specific functional communication is performed.

[0013]

As a result, according to the present invention, when an execution request for a specific function communication in which a wireless communication method is predetermined such as analog facsimile communication, confidential communication or digital data communication is input, the setting is first set. The wireless communication system is changed to a wireless communication system required for the requested functional communication, and then control for carrying out the functional communication is started. For this reason, the user can omit any operation for changing the wireless communication method to a mode corresponding to the function communication when performing the specific function communication, and perform the operation for executing the function communication suddenly. It becomes possible to do it. Therefore, the operability is significantly improved as compared with the conventional case in which the operation of changing the wireless communication system is required. In addition, the occurrence of erroneous operations is reduced.

Further, when the execution request for the specific functional communication is input, it is determined whether or not the wireless communication system currently set matches the wireless communication system required for the specific functional communication, and they do not match. Only when it is determined that the control for setting the wireless communication method required for the specific function communication is performed. That is, the control for changing the setting of the wireless communication system is performed only when the wireless communication system really needs to be changed. Therefore, when the wireless communication method necessary for the specific functional communication is already set, unnecessary control is not performed, which causes a time loss in control processing in the mobile station apparatus and the base station apparatus, for example. It is possible to prevent the occurrence of the above and perform efficient control processing.

[0015]

EXAMPLES The present invention will be described below based on examples. FIG. 1 shows the configuration of a mobile station apparatus according to an embodiment of the present invention.

In FIG. 1, a radio communication signal sent from a base station (not shown) in a predetermined time slot is received by a receiving circuit (R) via an antenna 1 and a duplexer (DUP) 2.
X) 3, where the frequency synthesizer (SY
N) 4 is combined with a local oscillation signal corresponding to the digital speech channel output from the N 4 and converted into an intermediate frequency signal. The received intermediate frequency signal is digitally demodulated after frame synchronization and bit synchronization are established by the digital modulation / demodulation circuit (MOD) 6. The synchronization information obtained by the frame synchronization and the bit synchronization is supplied to the control circuit 20. The digital demodulation signal output from the digital modulation / demodulation circuit 6 includes a digital speech signal and a digital control signal, of which the digital control signal is supplied to the control circuit 20 for identification. On the other hand, the digital speech signal is supplied to the equalizer (EQL) 7, where the demodulated waveform signal is equalized,
The error correction code decoding circuit (CH-COD) 8 performs error correction decoding. Then, a voice code decoding circuit (SP-CO
After the data is decoded in D) 9 and converted back into an analog call signal, it is supplied to the handset 11 via the voice switch 10 and the changeover switch 18, and the voice output is made from the handset 11.

On the other hand, the voice transmitted by the speaker is collected by the transmitter 12 and converted into a voice signal, and then input to the voice code decoding circuit 9 via the changeover switch 19 and the voice switch 13, where Is encoded with. The digital transmission signal obtained by this encoding is subjected to error correction coding in the error correction code decoding circuit 8 together with the digital control signal output from the control circuit 20, and then input to the digital modulation / demodulation circuit 6. The digital modulation / demodulation circuit 6 generates a modulation signal of an intermediate frequency according to the digital transmission signal supplied from the error correction code decoding circuit 8 and inputs it to the transmission circuit (TX) 5. In the transmission circuit 5, the modulated signal is combined with the local oscillation signal corresponding to the digital speech channel output from the frequency synthesizer 4 to be converted into a high frequency signal, and the high frequency signal is high frequency amplified and then passed through the duplexer 2. It is transmitted from the antenna 1 to the base station.

The mobile station apparatus of this embodiment has a configuration applicable to a system in which a digital system and a current analog system coexist, that is, a dual mode mobile radio communication system. That is, when making a wireless call in the analog mode instead of the digital mode, the voice switches 10 and 13 are controlled by the control circuit 20 from the voice code decoding circuit 9 side to the analog voice processing circuit (A-AU).
D) Switch to 14 side. Then, the reception intermediate frequency signal output from the reception circuit 3 is input to the analog voice processing circuit 14, where it is FM demodulated and then voice amplified, and then the handset 11 via the voice switch 10 and the changeover switch 18, respectively. And is output from the receiver 11 in a loud voice. On the other hand, the transmission signal output from the transmitter 12 is input to the analog voice processing circuit 14 via the changeover switch 19 and the voice switch 13, respectively, and converted into an intermediate frequency signal here, and then the transmission circuit 5
Is converted into a high frequency signal and transmitted from the antenna 1.

Further, the mobile station apparatus of this embodiment has a structure for connecting an external terminal apparatus such as a facsimile apparatus or a digital data terminal apparatus. That is, between the voice switches 10 and 13 and the handsets 11 and 12, the changeover switches 18 and 1 are connected as described above.
9 is inserted. These changeover switches 18, 19
According to the switching instruction of the control circuit 20, the handsets 11, 1
2 and the external terminal device as an alternative to the voice switch 10, 13
To connect to. In the figure, a case is shown in which a facsimile device 30 is connected as an external terminal device. In addition,
Reference numeral 31 is a terminal for connecting the facsimile device 30 to the mobile station device.

Reference numeral 15 denotes an input display section. The input display section 15 has a mode designation switch 51 and a data communication switch 52 in addition to a dial key and a call switch.
A function switch such as a secret switch 53 and a liquid crystal display (LCD) 54 are provided. The mode designation switch 51 is used to selectively designate an analog mode, a digital mode, or a dual mode in which no mode is designated as a wireless communication system. Further, the data communication switch 52 is used to shift from the voice call state to the facsimile communication. Further, the confidential talk switch 53 is used for shifting from the normal talking state to the secret talking state. The LCD 54 displays various information indicating the communication status. A power supply circuit 16 generates a desired operating voltage Vcc based on the output of the battery 17 and supplies it to each of the above circuits.

The control circuit 20 includes, for example, a microcomputer as a main control unit, and in addition to ordinary control means such as connection control and call control relating to incoming and outgoing calls, a mode change control means 21 and functional communication. Control means 22
And have.

When the mode designation switch 51 is operated during a call, the mode change control means 21 executes a process for changing the wireless communication system to the mode designated by this switch in a predetermined procedure.

The function communication control means 22 has a specific function switch, that is, a data communication switch 52 for facsimile communication or a confidential communication switch 53 for confidential communication.
When is operated, it is first determined whether or not the mode required for function communication designated by these switches matches the currently set mode. If the modes match, the process directly shifts to the control for the facsimile communication or the confidential communication. On the other hand, if the modes do not match, the mode change control is executed and then the facsimile communication or the confidential communication is performed. Function for shifting to control for shifting to control for communication. Next, the operation of the mobile station apparatus configured as described above will be described according to the control procedure of the control circuit 20.

In the standby state (non-communication state), the control circuit 20 monitors the arrival of an incoming call and the occurrence of an outgoing call in steps 2a and 2b, respectively, as shown in FIG. The operation is monitored. When the mode designating switch 51 is operated in this state, the control circuit 20 proceeds to step 2d to store the mode designated and input by the mode designating switch 51 in the RAM in the control circuit 20. Further, the display pattern of the designated input mode (request mode) is displayed on the LCD 52.

On the other hand, it is assumed that the user makes a call operation in this state. Then, the control circuit 20 executes the line connection control according to the calling as follows. That is, as shown in FIG. 3, first, in step 3a, a control channel called an access channel is captured and set, then in step 3b, a designated input mode is read from the RAM, and a calling signal including information indicating the designated input mode is sent. Created in step 3c. Then, the generated calling signal is transmitted to the base station in step 3d. Further, the control circuit 20 monitors the return of the call response signal from the base station in step 3e after the transmission of the call signal. And
When the call response signal is returned, the corresponding call channel is captured and set according to the call channel instruction information inserted in the call response signal. Then, the control circuit 20 judges the set communication channel and shifts to the communication control according to the analog mode or the digital mode according to the judgment result.

For example, it is assumed that the dual mode is specified as the request mode and the analog communication channel is instructed from the base station in response to this. Then, the control circuit 20 sets the operation mode in the device to the analog mode, captures and sets the analog call channel instructed by the base station, and shifts to the analog call control. Therefore, the user can thereafter talk or communicate in the analog mode. On the other hand, when the digital call channel is designated by the base station, the control circuit 20 captures and sets the designated digital call channel, and then shifts to digital call control.

Then, when the call control is started, the control circuit 2
As shown in FIG. 4, 0 repeats the call end monitoring, the operation monitoring of the mode designating switch, and the operation monitoring of the specific function switch in step 4a, step 4b and step 4c, respectively.

Then, in this state, the user operates the mode designating switch 51 to change the mode in which the user is talking.
It is assumed that a mode different from the currently set mode is designated and input. Then, the control circuit 20 executes the mode change control shown in FIG. That is, first, in step 1a, a mode change request message is created, and this message is transmitted to the base station via the analog call channel being set by interrupting or superimposing this message on the transmitted voice signal. Then, after transmitting this mode change request message, while monitoring the time in step 1b, step 1
At c, monitor the return of the change request acknowledgment (ACK) response message from the base station. And a certain time, for example 200m
When the ACK response message is returned from the base station within sec, the process proceeds to steps 1d and 1e where the handoff command arrival monitoring and other command arrival monitoring are repeated. In this state, if a handoff command arrives from the base station, the control circuit 20 proceeds to step 1f and performs the mode switching process here.
That is, the call-off channel instruction information is inserted in the handoff command, and the control circuit 20 captures a new call channel according to this instruction information and adjusts the transmission / reception timing of this channel as necessary. After that, the currently set call channel is switched to the above new call channel. At the same time, the voice switches 10 and 13 are switched according to whether the communication channel is analog or digital. Thus, the call channel is switched by operating the mode designating switch 51,
After that, the user can talk or communicate through this switched new call channel.

If, for example, the ACK response message is not returned within a fixed time (200 msec), the control circuit 20 moves to step 1g and the number of times the mode change request message is transmitted reaches three times. It is determined whether or not. If it has not reached three times, the process returns to step 1a and the mode change request message is retransmitted.
The transmission of the mode change request message is repeated up to three times until the return of the ACK response message is confirmed. If the ACK response message is not returned even after the mode change request message has been transmitted three times, the base station determines that it is unacceptable or the operation is abnormal, and proceeds to step 1h. After performing abnormal processing such as generating a ringing sound with, return to call control in analog mode.

After returning the ACK response message, if another command such as a disconnect command is received instead of the handoff command as shown in FIG. 5, the control circuit 2
0 returns to the call control from step 1e, and the processing according to the above-mentioned other commands is executed here.

On the other hand, it is assumed that the user presses a specific function switch in order to shift to a specific function communication such as facsimile communication or confidential communication during a call. Then, the control circuit 20 detects the operation of this specific function switch in step 4c, shifts to step 4d, and this step 4d
Then, the type of the operated specific function switch, that is, the data communication switch 52 for facsimile communication or the confidential communication switch is determined. Then, according to the determination result, the function communication control is performed.

For example, it is assumed that the user now pushes the data communication switch 52 to shift the telephone call to the facsimile communication. Then, the control circuit 20 executes the data communication switching control according to the procedure shown in FIG. That is, the control circuit 20 first determines in step 5a whether or not the currently set wireless communication system is the digital mode. And, for example, if the analog mode is being set,
When it is determined that the facsimile communication can be performed as it is, the process proceeds to step 5h, where the changeover switches 18 and 19 are switched from the existing handsets 11 and 12 side to the facsimile device 30 side.

On the other hand, assume that the wireless communication system currently being set is the digital mode. Then, the control circuit 20 determines that it is necessary to change the wireless communication system to the analog mode suitable for facsimile communication, and first executes the mode change control. That is, the control circuit 20
As described above with reference to FIG. 5, the process first proceeds to step 5b to create a mode change request message for requesting a change to the analog mode, and sends this message to the base station. After transmitting this mode change request message, the change request is acknowledged (ACK) from the base station in step 5d while monitoring the time in step 5c.
Monitor the return of reply messages and monitor for a certain period of time (eg 200m
When the ACK response message is returned from the base station within sec), the arrival of the handoff command is monitored in step 5e. If a handoff command arrives from the base station in this state, the control circuit 20 proceeds to step 5g and performs the mode switching process here. That is, call channel instruction information is inserted in the handoff command, and the control circuit 20 captures and sets a new call channel according to this instruction information. At this time, the control circuit 20
Determines whether the new call channel is an analog call channel. Then, as a result of this determination, if it is an analog communication channel, it is determined that preparation for shifting to facsimile communication is completed, and the process proceeds to step 5h, where the changeover switches 18 and 19 are set to the handset 11,
Switch from the 12 side to the facsimile machine 30 side.

Thus, the facsimile device 30 is connected to the analog communication channel via the mobile station device, and if the user presses the transmission switch of the facsimile device 30 in this state, the facsimile device 30 will be in the facsimile transmission state thereafter. During the facsimile communication, the control circuit 20 of the mobile station device monitors the arrival of the call termination signal from the base station in step 5i. Then, when the call termination signal arrives in this state, the control circuit 20 executes the call termination process and returns to the standby state. The change-over switches 18 and 19 are restored to the handsets 11 and 12 side in this end processing. Figure 8
It is a figure which shows the data communication switching control sequence when the data communication switch 52 is pushed down in the state of the digital mode explained above.

If the user presses the confidential communication switch 53 to make a confidential call during a call,
The following secret story switching control is performed. That is, the control circuit 20 presses the secret communication switch in step 4d.
If it is detected in step S6, it is first determined in step 6a whether or not the wireless communication system currently set is the analog mode as shown in FIG. Then, for example, if the digital mode is being set, it is determined that it is possible to directly shift to the confidential communication, and the process proceeds to step 6h, where the circuit group for the confidential communication is operated and the confidential communication is performed. The fact that it is possible is displayed on the LCD 54.

On the other hand, assume that the wireless communication system currently being set is the analog mode. Then, the control circuit 20 determines that it is necessary to change the wireless communication system to the digital mode required for the confidential communication, and first executes the mode change control. That is, the control circuit 20 first proceeds to step 6b, where a mode change request message for requesting a change to the digital mode is created,
This message is sent to the base station. Then, after transmitting this mode change request message, while monitoring the time in step 6c, the return of the change request acknowledgment (ACK) response message from the base station is monitored in step 6d,
When the ACK response message is returned from the base station within a fixed time (for example, 200 msec), the arrival of the handoff command is monitored in step 6e. In this state, if a handoff command arrives from the base station, the control circuit 20 moves to step 6g and performs a mode switching process here. That is, call channel instruction information is inserted in the handoff command, and the control circuit 20 captures and sets a new call channel according to this instruction information. At this time, the control circuit 20 determines whether or not the new call channel is a digital call channel. As a result of this determination, if it is a digital communication channel, it is determined that preparation for shifting to the confidential communication is completed, and the process proceeds to step 6h, where the circuit group for the confidential communication is operated and the confidential communication is performed. The fact that the call is available is displayed on the LCD 54.

In this way, the mobile station device can thereafter carry out a confidential call using the digital call channel. FIG. 9 shows the confidential communication switch 53 in the analog mode described above.
9 shows a confidential communication switching control sequence when is pressed.

As described above, according to this embodiment, when a specific function switch such as the data communication switch 52 or the confidential communication switch 53 is operated, the wireless communication system is changed to the communication specified by the specific function switch. By executing the control for changing to the required mode and switching the device to the state for executing the above-mentioned specific function communication after changing to the required mode by this control, the user is set to the current setting. Regardless of the mode of the wireless communication system, the specific function communication can be performed only by operating the specific function switch without performing any operation for changing the mode. That is, the desired function communication can be started with a minimum operation of only the operation of the specific function switch, which can remarkably improve the operability. This effect is particularly useful in a car telephone system that requires an operation for communication while performing a driving operation, because the influence on the driving operation can be reduced as much as possible.

Further, according to this embodiment, when a specific function switch such as the data communication switch 52 or the confidential communication switch 53 is operated, the mode currently set is the specific function designated by the specific function switch. By determining whether or not it matches the mode required for communication, and executing the change control to the mode required for specific function communication only when it is determined that the mode does not match, a truly wireless communication system The control for changing the setting of the wireless communication system is performed only when the change of the wireless communication method is required, which prevents the occurrence of time loss in the control processing in the mobile station apparatus and the base station apparatus, thereby improving the efficiency. Good control processing is possible.

Further, in this embodiment, after the mode change control, it is judged whether or not the wireless communication system is certainly changed to the required mode, and the specific function communication is executed only when the required mode is set. I am trying. Therefore,
For example, when the base station does not change to the required mode, such as when it has only one of the analog communication channel and the digital communication channel, or when there is no free channel even if it has it, It is possible to prevent the specific function communication from being performed in the state of the inappropriate mode, so that the specific function communication can always be executed in the optimum mode required for it.

The present invention is not limited to the above embodiment. For example, when the wireless communication system is changed to a required mode and specific function communication becomes possible, the fact may be displayed or notified. As the display or notification method, for example, a method of displaying a message to that effect on the LCD 54 or lighting or blinking a light emitting diode, or generating a sound or generating a voice message to that effect by a voice synthesizing means and raising the voice Any method of outputting can be used. Furthermore, the above-described display or notification may be performed when the required mode is not changed.

In the above-mentioned embodiment, the case where the facsimile communication and the secret communication are applied as the specific function communication has been described as an example. You may apply.

In addition, the scope of the present invention also relates to the type of system or mobile station to be applied, the configuration of the mobile station device, the type of specific functional communication, the mode change control procedure, the control procedure and control contents of the functional communication control means, and the like. Various modifications can be implemented without departing from the above.

[0044]

As described above in detail, according to the present invention, the function communication request input means for inputting the execution request of the specific function communication whose wireless communication method is predetermined and the function communication control means are provided. In the wireless communication, when the execution request for the specific functional communication is input by the functional communication request input means, the predetermined wireless communication is performed by the functional communication request control means in correspondence with the specific functional communication. By executing the control for setting the communication method, and then performing the control for carrying out the specific function communication input as described above, the wireless communication can be performed easily without a lot of troublesome operations. It is possible to provide a dual-mode wireless communication device capable of shifting to a specific function communication in which a communication method is determined and improving operability.

[Brief description of drawings]

FIG. 1 is a circuit block diagram showing a configuration of a wireless communication device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a control procedure and control contents in a standby state executed by a control circuit of the apparatus shown in FIG.

3 is a flowchart showing a control procedure and control contents of line connection control executed by a control circuit of the apparatus shown in FIG.

FIG. 4 is a flowchart showing a control procedure and control contents of call control executed by a control circuit of the device shown in FIG.

5 is a flowchart showing a control procedure and control contents of mode change control executed by a control circuit of the apparatus shown in FIG.

6 is a flowchart showing a control procedure and control contents of data communication switching control executed by a control circuit of the apparatus shown in FIG.

7 is a flowchart showing a control procedure and control contents of confidential talk switching control executed by a control circuit of the apparatus shown in FIG.

8 is a diagram for explaining a data communication switching control sequence of the device shown in FIG.

9 is a diagram for explaining a confidential talk switching control sequence of the device shown in FIG.

FIG. 10 is a diagram showing a schematic configuration of a mobile radio communication system adopting a dual mode system.

[Explanation of symbols]

NW ... Wired communication network, CS ... Control station, BS1, BS2, ...
Base station, MS1, MS2, ... Mobile station, E1, E2, ... Wireless zone, 1 ... Antenna, 2 ... Duplexer (DUP), 3 ...
Receiver circuit (RX), 4 ... Frequency synthesizer (SY)
N), 5 ... Transmission circuit (TX), 6 ... Digital modulation / demodulation circuit (MOD), 7 ... Equalizer (EQL), 8 ... Error correction code decoding circuit (CH-COD), 9 ... Speech code decoding circuit (SP) -COD), 10, 13 ... Voice switch, 11 ...
Handset, 12 ... Transmitter, 14 ... Analog voice processing circuit (A-AUD), 15 ... Input display section, 16 ... Power supply circuit,
Reference numeral 17 ... Battery, 18, 19 ... Changeover switch, 20 ... Control circuit, 21 ... Mode change control means, 22 ... Function communication control means, 30 ... Facsimile device, 31 ... Connection terminal, 5
1 ... Mode designation switch, 52 ... Data communication switch,
53 ... Secret communication switch, 54 ... Liquid crystal display (LC
D).

Claims (2)

[Claims] 1. A dual-mode wireless communication device having an analog mode and a digital mode as a wireless communication system, and having a function of performing wireless communication by selectively using these modes, the wireless communication system is predetermined. The specified function communication request input means for inputting the specified request for execution of the specified function communication, and this specified request when the specified request for execution of the specified function communication is input during this wireless communication. A function communication control means for performing control for setting a predetermined wireless communication method corresponding to the function communication, and then performing control for executing the input specific function communication. Characteristic dual-mode wireless communication device. 2. The functional communication control means determines, when an execution request for a specific functional communication is input, a wireless communication method currently set in advance corresponding to the specific functional communication for which the execution request is input. It is determined whether or not it matches the specified wireless communication method, and if it is determined that the specified wireless communication method does not match, the control for setting the predetermined wireless communication method corresponding to the specific function communication is executed, In this case, the control for setting a predetermined wireless communication method corresponding to the specific functional communication is omitted, and the control for performing the specific functional communication is performed. Item 2. The dual-mode wireless communication device according to Item 1.