Dual mode type radio communication equipment

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Industrial application field]

The present invention relates to a wireless communication device used as a mobile station in a mobile wireless communication system such as a mobile phone system, a mobile phone system, or a cordless telephone system, and particularly relates to a wireless communication device that employs a dual mode as a wireless communication method.

【0002】

[Conventional technology]

In recent years, as one of the mobile wireless communication systems, a system adopting a dual mode wireless communication system has been proposed. The dual mode is a method in which an analog mode and a digital mode are used in combination.

【0003】

In the analog mode, the communication device on the transmitting side transmits the carrier wave by, for example, FM-modulating it with voice signals and data, and the communication device on the receiving side receives the modulated wave sent from the transmitting side and demodulates the voice. And a method of reproducing data. On the other hand, in the digital mode, the voice signal and data are encoded by the communication device on the transmitting side, the carrier wave is digitally modulated by the encoded signal, for example, by the π / 4 shift DQPSK method, and transmitted, and the communication device on the receiving side transmits the voice signal. This is a method in which an audio signal and data are reproduced by receiving a modulated wave transmitted from the transmitting side, digitally demodulating the wave, and then decoding the demodulated signal. In wireless communication in this digital mode, a method is used in which a plurality of time slots are time-division-multiplexed and transmitted at one radio frequency.

【0004】

FIG. 10 shows an example of the configuration of this type of system. This system consists of a control station CS connected to the wired communication network NW via a wired line CL, and a plurality of base stations BS1, BS2, which are connected to this control station CS via a wired line CL1 to CL3, respectively. ... and multiple mobile stations MS1, MS2, ... Each of the above base stations BS1, BS2, ... Form a radio zone E1, E2, .... The mobile stations MS1, MS2, ... are wireless communication channels for each base station BS1, BS2, ... In the radio zones E1, E2, ... of each of the above base stations BS1, BS2, ... Connected via.

【0005】

In such a configuration, for example, when a call operation is performed on the mobile station MS1, the mobile station MS1 transmits a call signal using a control channel called an access channel (A-CH). At this time, in each base station BS1, BS2, ..., the arrival of the outgoing call signal is monitored by the access channel. In this state, for example, if the base station BS1 receives the above-mentioned call signal, the base station BS1 selects an empty call channel from a plurality of analog call channels and digital call channels owned by its own station, and this base station BS1 selects a free call channel. The selected call channel is inserted into the call answer signal and notified to the calling mobile station MS1. Then, the selected call channel is set between the base station BS1 and the mobile station MS1, and when this call channel is set, wireless communication is possible thereafter. That is, whether to select the analog mode or the digital mode as the wireless communication method is generally determined by the base stations BS1, BS2, ..., Depending on the availability of the wireless communication channel and the like.

【0006】

By the way, recently, in this kind of system, it has been proposed that the wireless communication method can be selected even in a mobile station. In this method, for example, a mobile station is provided with a mode designation switch, and the mode specified by this switch is notified to the base station at the time of a call or an incoming call, and the base station notifies an empty call channel according to this notified mode. Find and set the call channel. In addition, the operation of the above mode designation switch is monitored even during a call, and when this switch is operated, a mode change request signal is notified to the base station, and the base station searches for a free wireless call channel according to this request and makes a call. It changes the channel.

【0007】

[Problems to be Solved by the Invention]

However, the mobile station device that has been conventionally considered to realize such a method has the following problems to be improved. That is, recently, it has been considered to connect a facsimile machine to a mobile station device so that mobile facsimile communication can be performed. As the wireless communication method in this case, an analog mode capable of transmitting with low error is preferable for analog facsimile communication of G2 or G3 standard. Therefore, for example, when shifting to mobile facsimile communication with the digital mode set, the user needs to perform the following operations. That is, first, the mode designation switch of the mobile station apparatus is operated to specify and input the analog mode, thereby handing off the wireless communication method 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, whereby the facsimile device is connected to the wireless communication channel via the mobile station device. .. Finally, the transmission switch of the facsimile machine is operated to start transmission.

【0008】

On the other hand, the same operation is required when attempting to perform a secret call or digital data transmission. That is, it is necessary to set the wireless communication method to the digital mode in order to perform a secret call or digital data transmission. Therefore, for example, when attempting to perform a secret call or digital data transmission from a state in which the analog mode is set, the user first operates the mode designation switch to hand off the wireless communication method to the digital mode. Later, it is necessary to operate a function switch for confidential communication or digital data transmission.

【0009】

In this way, in the devices that have been conventionally considered, when performing specific functional communication in which the mode of the wireless communication method is determined, such as facsimile communication, confidential communication, or digital data transmission, the wireless communication method is first used. It was necessary to perform an operation for changing to the corresponding mode, and then perform an operation for carrying out functional communication such as the above-mentioned facsimile communication and confidential call. For this reason, the number of operations becomes large for the user, which makes the operation troublesome, and for that reason, it is easy to cause an erroneous operation.

【0010】

The present invention has been made by paying attention to the above circumstances, and an object of the present invention is to shift to a specific functional communication in which a wireless communication method is determined by a simple operation without performing a large number of troublesome operations. It is an object of the present invention to provide a dual-mode wireless communication device capable of improving operability.

【0011】

[Means for solving problems]

In order to achieve the above object, the present invention provides a dual mode wireless communication device which includes an analog mode and a digital mode as wireless communication methods and has a function of selectively using these modes to perform wireless communication. The wireless communication method includes a functional communication request input means for inputting an execution request of a specific functional communication determined in advance, and a functional communication control means. Then, when a specific functional communication execution request is input by the above-mentioned 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 specific function communication input above is performed.

【0012】

Further, in the present invention, when an execution request for a specific functional communication is input by the functional communication control means, the wireless communication method currently being set is determined in advance corresponding to the specific functional communication for which the implementation request is input. It is determined whether or not the wireless communication system matches the determined wireless communication system, and if it is determined that the wireless communication system does not match, the control for setting the predetermined wireless communication system corresponding to the specific functional communication is executed and the match is performed. In that case, the control for setting the predetermined wireless communication method corresponding to the specific functional communication is omitted, and the control for carrying out the specific functional communication is performed. And.

【0013】

[Action]

As a result, according to the present invention, when a request for execution of a specific functional communication having a predetermined wireless communication method such as analog facsimile communication, confidential communication or digital data communication is input, the wireless communication being set is first set. The method is changed to the wireless communication method required for the above-mentioned functional communication requested to be implemented, and then the control for executing the above-mentioned functional communication is started. Therefore, when the user performs a specific functional communication, the operation for changing the wireless communication method to the mode corresponding to this functional communication can be omitted at all, and the operation for suddenly performing the functional communication can be performed. It becomes possible to do. Therefore, the operability is greatly improved as compared with the conventional case in which the operation for changing the wireless communication method is required. In addition, the occurrence of erroneous operations is reduced.

【0014】

Further, when a request for execution of a specific function communication is input, it is determined whether or not the wireless communication method currently set matches the wireless communication method required for the specific function communication, and it is determined that the wireless communication method does not match. Only in this case, control for setting the wireless communication method required for the above-mentioned specific functional communication is performed. That is, control for changing the setting of the wireless communication system is performed only when it is really necessary to change the wireless communication system. Therefore, if the wireless communication method required for specific functional communication has already been set, useless control will not be performed, and as a result, for example, a time loss in control processing in the mobile station device and the base station device will be lost. Can be prevented and efficient control processing becomes possible.

【0015】

[Example]

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

【0016】

In the figure, a radio communication signal sent from a base station (not shown) in a predetermined time slot is input to a receiving circuit (RX) 3 via an antenna 1 and a duplexer (DUP) 2, where a frequency synthesizer (SYN) is used. ) It is combined with the local oscillation signal corresponding to the digital call channel output from 4 and converted into an intermediate frequency signal. Then, 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 demodulation circuit 6 includes a digital call 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 call signal is supplied to the equalizer (EQL) 7, where the demodulated waveform is signal-equalized, and then error-corrected and decoded by the error-correcting code decoding circuit (CH-COD) 8. Then, after being decoded by the voice code decoding circuit (SP-COD) 9 and returned to the analog call signal, it is supplied to the handset 11 via the voice switch 10 and the changeover switch 18, respectively, and the loudspeaker is output from the handset 11. Will be done.

【0017】

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 and encoded here. Will be done. The digital transmission signal obtained by this coding is error-corrected and coded by the error-correcting 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. In the digital modulation / demodulation circuit 6, an intermediate frequency modulation signal corresponding to the digital transmission signal supplied from the error correction code decoding circuit 8 is generated and input 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 call channel output from the frequency synthesizer 4 and converted into a high-frequency signal, and this high-frequency signal is high-frequency amplified and then passed through the duplexer 2. It is transmitted from antenna 1 to the base station.

【0018】

Further, 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 wireless communication system. That is, when making a wireless call in analog mode instead of digital mode, the voice switches 10 and 13 are switched from the voice code decoding circuit 9 side to the analog voice processing circuit (A-AUD) 14 side under the control of the control circuit 20. .. Then, the received intermediate frequency signal output from the receiving circuit 3 is input to the analog sound processing circuit 14, FM demodulated here, and then the sound is amplified, and then the handset 11 is passed through the voice switch 10 and the changeover switch 18, respectively. Is supplied to the receiver 11 and a loudspeaker is output from the handset 11. On the other hand, the transmission signal output from the transmitter 12 is input to the analog audio processing circuit 14 via the changeover switch 19 and the audio switch 13, respectively, where it is converted into an intermediate frequency signal and then transmitted circuit 5. Is converted into a high-frequency signal and transmitted from the antenna 1.

【0019】

Further, the mobile station apparatus of this embodiment has a configuration for connecting an external terminal apparatus such as a facsimile apparatus or a digital data terminal apparatus. That is, the changeover switches 18 and 19 are inserted between the voice switches 10 and 13 and the handset 11 and 12, respectively, as described above. These changeover switches 18 and 19 selectively connect the handset 11 and 12 and the external terminal device to the voice switches 10 and 13 according to the changeover instruction of the control circuit 20. The figure shows a case where the facsimile machine 30 is connected as an external terminal device. Reference numeral 31 denotes a terminal for connecting the facsimile apparatus 30 to the mobile station apparatus.

【0020】

Reference numeral 15 denotes an input display unit, which includes function switches such as a mode designation switch 51, a data communication switch 52, and a secret talk switch 53, and a liquid crystal display (in addition to dial keys and transmission switches). LCD) 54 is provided. The mode designation switch 51 is used to selectively specify an analog mode, a digital mode, or a dual mode in which a mode is not particularly specified as a wireless communication method. The data communication switch 52 is also used to shift from the voice call state to the facsimile communication. Further, the secret talk switch 53 is used to shift from the normal talk state to the secret talk state. The LCD 54 displays various information indicating the communication status. Reference numeral 16 denotes a power supply circuit, which generates a desired operating voltage Vcc based on the output of the battery 17 and supplies it to each of the above circuits.

【0021】

By the way, the control circuit 20 is provided with, for example, a microcomputer as a main control unit, and in addition to normal control means such as connection control and call control related to incoming / outgoing calls, a mode change control means 21 and a functional communication control means 22 And have.

【0022】

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 method to the mode designated by this switch in a predetermined procedure.

【0023】

When a specific function switch, that is, a data communication switch 52 for facsimile communication or a secret communication switch 53 for secret communication is operated, the functional communication control means 22 first performs the functional communication specified by these switches. Determine if the required mode matches the currently set mode. Then, when the modes match, the control shifts to the control for the facsimile communication or the secret talk communication as it is, and when the modes do not match, the mode change control is executed and then for the facsimile communication or the secret talk communication. Shift to control function Shift 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.

【0024】

In the standby state (non-call state), the control circuit 20 monitors the arrival of incoming calls and the occurrence of incoming calls in steps 2a and 2b, respectively, as shown in FIG. 2, while monitoring the operation of the mode designation switch 51 in step 2c. Is doing. Then, when the mode designation switch 51 is operated in this state, the control circuit 20 proceeds to step 2d, where the mode designated and input by the mode designation switch 51 is stored in the RAM in the control circuit 20. In addition, the display pattern of the designated input mode (request mode) is displayed on the LCD 52.

【0025】

On the other hand, it is assumed that the user has performed a call operation in this state. Then, the control circuit 20 executes the line connection control according to the call as follows. That is, as shown in FIG. 3, first, in step 3a, a control channel called an access channel is acquired and set, and then in step 3b, the designated input mode is read from the RAM, and a call signal including information indicating this designated input mode is output. Create in step 3c. Then, the created call 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. Then, 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 determines the set call channel, and shifts to call control according to the analog mode or the digital mode according to the determination result.

【0026】

For example, suppose that the dual mode is currently specified as the request mode, and the base station instructs the analog call channel accordingly. Then, the control circuit 20 sets the operation mode in the apparatus to the analog mode, captures and sets the analog call channel instructed by the base station, and shifts to the analog call control. Therefore, after that, the user can make a call or communicate in the analog mode. On the other hand, when a digital call channel is instructed by the base station, the control circuit 20 captures and sets the instructed digital call channel, and then shifts to digital call control.

【0027】

Then, when shifting to call control, the control circuit 20 repeatedly performs end-of-call monitoring, mode designation switch operation monitoring, and specific function switch operation monitoring in steps 4a, 4b, and 4c, respectively, as shown in FIG.

【0028】

Then, in this state, it is assumed that the user operates the mode designation switch 51 to change the mode during a call and specifies and inputs a mode different from the mode currently being set. Then, the control circuit 20 executes the mode change control shown in FIG. That is, first, a mode change request message is created in step 1a, and by interrupting or superimposing this message on the transmitted voice signal, the message is transmitted to the base station via the analog call channel being set. Then, after the mode change request message is transmitted, the return of the change request approval (ACK) response message from the base station is monitored in step 1c while monitoring the time in step 1b. And for a certain period of time, for example 200msec If the ACK response message is returned from the base station within this time, the process proceeds to step 1d and step 1e, where the arrival monitoring of the handoff command and the arrival monitoring of other commands are repeated. If a handoff command arrives from the base station in this state, the control circuit 20 shifts to step 1f and performs mode switching processing here. That is, the instruction information of the call channel 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 designation switch 51, and thereafter, the user can make a call or communicate via the new switched call channel.

【0029】

For example, if the above ACK response message is not returned within a certain period of time (200 msec), the control circuit 20 shifts to step 1 g, and whether or not the number of times the mode change request message is sent reaches 3 times. Is determined. Then, if the number of times has not been reached three times, the process returns to step 1a and the mode change request message is re-sent. This mode change request message is sent up to three times until the return of the ACK response message is confirmed. Then, if the ACK response message is not returned even after sending the above mode change request message three times, it is determined that the base station cannot accept or the operation is abnormal, and the process proceeds to step 1h. After performing abnormal processing such as generating a ringing sound with, the call control is returned to the analog mode.

【0030】

Further, after the ACK response message is returned, for example, when another command such as a disconnect command arrives instead of the handoff command as shown in FIG. 5, the control circuit 20 returns to call control from step 1e, and here. Execute processing according to the above other commands.

【0031】

On the other hand, it is assumed that the user presses a specific function switch during a call in order to shift to a specific function communication such as facsimile communication or confidential communication. Then, the control circuit 20 detects the operation of this specific function switch in step 4c and proceeds to step 4d, and in this step 4d, the type of the specific function switch operated above, that is, the data communication switch 52 for facsimile communication. Whether it is a secret communication switch or not. Then, it shifts to the corresponding functional communication control according to the determination result.

【0032】

For example, suppose a user now presses the data communication switch 52 to shift from a telephone call to a 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 whether or not the wireless communication method currently being set in step 5a is in the digital mode. Then, for example, if the analog mode is being set, it is determined that it is possible to shift to facsimile communication as it is, and the shift to step 5h is performed. Switch to the facsimile machine 30 side.

【0033】

On the other hand, it is assumed that the wireless communication method currently being set is the digital mode. Then, the control circuit 20 determines that it is necessary to change the wireless communication method to an analog mode suitable for facsimile communication, and first executes the mode change control. That is, as described above in FIG. 5, the control circuit 20 first shifts to step 5b, creates a mode change request message for requesting a change to the analog mode, and directs this message to the base station. Send out. Then, after the mode change request message is transmitted, the time is monitored in step 5c, and the return of the change request approval (ACK) response message from the base station is monitored in step 5d for a certain period of time (for example, 200 msec). If the ACK response message is returned from the base station within), then 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 shifts to step 5g and performs mode switching processing here. That is, the instruction information of the call channel 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 an analog call channel. Then, as a result of this determination, it is determined that the preparation for shifting to facsimile communication is completed if it is an analog communication channel, and the transition to step 5h is performed, where the changeover switches 18 and 19 are set from the handset 11 and 12 sides. Switch to the facsimile machine 30 side.

【0034】

Thus, the facsimile machine 30 is connected to the analog communication channel via the mobile station device, and if the user presses the transmission switch of the facsimile machine 30 in this state, the facsimile machine 30 is subsequently put into the facsimile transmission state. During this facsimile communication, the control circuit 20 of the mobile station device monitors the arrival of the end signal from the base station in step 5i. Then, when the end call signal arrives in this state, the control circuit 20 executes the end call process and returns to the standby state. The changeover switches 18 and 19 are restored to the handset 11 and 12 sides in this end-of-call processing. FIG. 8 is a diagram showing a data communication switching control sequence when the data communication switch 52 is pressed in the digital mode as described above.

【0035】

Further, when the user presses the secret talk communication switch 53 to make a secret talk call during a call, the following secret talk switching control is performed. That is, when the control circuit 20 detects the pressing of the secret communication switch in step 4d, it first determines whether or not the wireless communication method currently being set in step 6a is in analog mode, as shown in FIG. 7. Then, for example, if the digital mode is being set, it is determined that it is possible to shift to the secret call as it is, and the process proceeds to step 6h, where the circuit group for the secret call is operated and the secret call is started. Display on the LCD 54 that it is possible.

【0036】

On the other hand, it is assumed that the wireless communication method currently being set is the analog mode. Then, the control circuit 20 determines that it is necessary to change the wireless communication method to the digital mode required for the confidential call, and first executes the mode change control. That is, the control circuit 20 first proceeds to step 6b, where it creates a mode change request message for requesting a change to the digital mode, and sends this message to the base station. Then, after the mode change request message is transmitted, the time is monitored in step 6c, and the return of the change request approval (ACK) response message from the base station is monitored in step 6d for a certain period of time (for example, 200 msec). If the ACK response message is returned from the base station within), then the arrival of the handoff command is monitored in step 6e. If a handoff command arrives from the base station in this state, the control circuit 20 shifts to step 6g and performs mode switching processing here. That is, the instruction information of the call channel 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. Then, as a result of this determination, if it is a digital call channel, it is determined that the preparation for shifting to the secret call is completed, and the process proceeds to step 6h to operate the circuit group for the secret call and to operate the secret talk. Display on the LCD 54 that the call is possible.

【0037】

Thus, the mobile station device can subsequently make a confidential call via a digital call channel. FIG. 9 shows the secret talk communication switching control sequence when the secret talk communication switch 53 is pressed in the analog mode as described above.

【0038】

As described above, in this embodiment, when a specific function switch such as the data communication switch 52 or the secret communication switch 53 is operated, the wireless communication method is set to the mode required for the communication specified by the specific function switch. By executing the control to change to, and switching the device to the state for executing the above-mentioned specific function communication after being changed to the required mode by this control, the user is currently setting the radio. Regardless of the mode of the communication method, it is possible to carry out specific function communication simply by operating the specific function switch without performing any operation for changing the mode. That is, the desired functional communication can be started with a minimum operation of only the operation of the specific function switch, which can significantly improve the operability. This effect is particularly useful in a car phone device in which it is necessary to perform an operation for communication while performing a driving operation, because the influence on the driving operation can be reduced as much as possible.

【0039】

Further, in this embodiment, when a specific function switch such as the data communication switch 52 or the secret communication switch 53 is operated, the mode currently being set is required for the specific function communication specified by the specific function switch. By determining whether or not the mode matches the mode and executing the change control to the mode required for specific function communication only when it is determined that the mode does not match, the wireless communication method can be truly changed. Control for changing the setting of the wireless communication method is performed only when necessary, thereby preventing the occurrence of time loss in the control process in the mobile station device and the base station device, for example, and efficient control process. Is possible.

【0040】

Further, in this embodiment, it is determined whether or not the wireless communication method has been changed to the required mode after the mode change control, and the specific function communication is executed only when the required mode is set. There is. Therefore, if the base station does not change to the required mode, for example, if the base station has only one of the analog call channels or the digital call channels, or if it does have no free channels. It is possible to prevent a specific functional communication from being performed in the state of the inappropriate mode, whereby a specific functional communication can always be performed in the optimum mode required for the specific functional communication.

【0041】

The present invention is not limited to the above examples. For example, when the wireless communication method is changed to a required mode and a specific functional communication becomes possible, a notification to that effect may be displayed or notified. As this 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 a method of generating a ringing sound or generating a voice message to that effect by a voice synthesis means is used for loudening. You can use the method of outputting. Further, the above display or notification may be performed when the required mode is not changed.

【0042】

Further, in the above embodiment, the case where facsimile communication and confidential communication are applied as specific function communication has been described as an example, but communication by other devices such as a personal computer, a word processor, and a digital terminal device such as an ISDN terminal is applied. May be good.

【0043】

In addition, the gist of the present invention is not deviated from the applicable system or mobile station type, mobile station device configuration, specific functional communication type, mode change control procedure, functional communication control means control procedure, control content, and the like. It can be implemented with various modifications within the range.

【0044】

[Effect of the invention]

As described in detail above, according to the present invention, the wireless communication method includes a functional communication request input means for inputting a predetermined specific functional communication execution request and a functional communication control means, and is in wireless communication. When a specific functional communication execution request is input by the functional communication request input means, the functional communication request control means sets a predetermined wireless communication method corresponding to the specific functional communication. After executing the control for the above, the wireless communication method is determined by a simple operation without performing a large number of troublesome operations by performing the control for executing the specific function communication input above. It is possible to shift to a specific functional communication, thereby providing a dual-mode wireless communication device capable of improving operability.

[Simple explanation of drawings]

[Figure 1]

The circuit block diagram which shows the structure of the wireless communication apparatus which concerns on one Embodiment of this invention.

[Figure 2]

The flowchart which shows the control procedure and control contents in the standby state executed by the control circuit of the apparatus shown in FIG.

[Fig. 3]

The flowchart which shows the control procedure and control contents of the line connection control executed by the control circuit of the apparatus shown in FIG.

[Fig. 4]

The flowchart which shows the control procedure and control contents of the call control executed by the control circuit of the apparatus shown in FIG.

[Fig. 5]

The flowchart which shows the control procedure and control contents of the mode change control executed by the control circuit of the apparatus shown in FIG.

[Fig. 6]

The flowchart which shows the control procedure and control contents of the data communication switching control executed by the control circuit of the apparatus shown in FIG.

[Fig. 7]

The flowchart which shows the control procedure and control contents of the secret story switching control executed by the control circuit of the apparatus shown in FIG.

[Fig. 8]

The figure for demonstrating the data communication switching control sequence of the apparatus shown in FIG.

[Fig. 9]

The figure for demonstrating the secret story switching control sequence of the apparatus shown in FIG.

[Fig. 10]

The figure which shows the schematic structure of the mobile wireless communication system which adopted the 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 ... Commoner (DUP), 3 ... Receive circuit (RX), 4 ... Frequency synthesizer (SYN), 5 ... Transmit circuit (TX), 6 ... Digital modulation / demodulation circuit (MOD) ), 7 ... equalizer (EQL), 8 ... error correction code decoding circuit (CH-COD), 9 ... voice code decoding circuit (SP-COD), 10, 13 ... voice switch , 11 ... Handset, 12 ... Handset, 14 ... Analog Audio Processing Circuit (A-AUD), 15 ... Input Display, 16 ... Power Circuit, 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, 51. .. Mode specification switch, 52 ... Data communication switch, 53 ... Confidential communication switch, 54 ... LCD display (LCD).