JPH10271560A - Digital radio telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the user to properly cope with the case that a speech is not available regardless of making a call with, e.g. the radio telephone set. SOLUTION: When information such as speech unavailable information sent from a base station BS is detected, a current status of the base station and a radio slave set PS is displayed on a display section 20 of the slave set PS. As a result, the user of the radio slave set surely identifies the current status of the base station and the slave set based on the display of the display section and the user properly copes with the situation based on the displayed status. In the case that the current status displayed on the display section denotes a speech unavailable state, since redialing is attained by one operation, redialing is surely made with a simple operation and the slave set is connected to an opposite party in the case that the speech is not available at dialing and redialing is required.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a digital radio telephone device wirelessly connected to a base station.

[0002]

2. Description of the Related Art This type of digital radio telephone (hereinafter referred to as "digital radio telephone") will be described.
Wireless handset) allows the wireless handset owner to place a call from any location and talk to the other party, and to receive a call from the other party and talk to the other party no matter where they are. In recent years, it has spread rapidly. That is, when a calling operation is performed on the wireless handset side, this is sent to the nearest base station as a wireless signal, and the base station sends the calling operation information to the exchange, thereby calling the other party. Then, when the other party answers this call, the call is an outgoing call. On the other hand, there is a call from the other party via the base station, and when this call is answered by the wireless handset, the incoming call is made.

[0003]

In the case of such a wireless slave device, if a call cannot be made to the other party when a dialing operation is performed and a call is made to the other party, a busy tone is transmitted to the user to make a call to the user impossible. To the effect. Upon hearing the busy tone, the user performs a redial transmission operation to call the other party again. However, the conditions under which such a calling wireless handset cannot make a call include a case where the other party is busy or a case where a call cannot be made because the base station's wireless line is full, etc.Conventionally, a busy tone is transmitted in any case. To notify you that calls are not allowed. For this reason, the user of the wireless handset cannot identify whether the other party is busy and cannot make a call or the base station's wireless line is full and cannot make a call. There was a problem that would go. Therefore, an object of the present invention is to allow a user to appropriately cope with a case where, for example, a busy tone is transmitted at the time of outgoing call and communication becomes impossible.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a digital wireless telephone device having a display unit and an operation unit, and capable of wireless communication with a base station. And a display control means for displaying a current state on a display unit based on the information detected by the detection means. Accordingly, since the current state is displayed on the display unit, the user of the slave unit can take appropriate action according to the displayed current state. That is, the user of the wireless slave device can easily identify the current status of the wireless slave device and the base station from the display status of the display unit, and thus, for example, a call cannot be made because the wireless line of the base station is full. In such a case, useless redial transmission repeatedly transmitted by the user of the slave unit can be avoided. In addition, there is provided a redial transmission means for performing redial transmission by one operation when the current state displayed on the display unit indicates a call disabled state. As a result, if the user of the slave unit needs to make a redial call when a call cannot be made at the time of making a call, the user can make a redial call with a simple operation and connect to the other party.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing a configuration of a base station BS to which the digital wireless telephone device of the present invention is wirelessly connected. The base station BS includes a wireless transmitting / receiving unit 31 for performing wireless communication with a wireless handset (digital wireless telephone device) PS, a modem demodulator 32 for demodulating data received from the wireless handset PS, and channel codecs 33 and 35. , A voice codec 34 for performing digital / analog conversion of voice signals, a modem modulator 36 for modulating data from the exchange 1 and transmitting the data to the wireless transmission / reception unit 31, and a wireless processing CPU 37 for controlling communication with the wireless terminal PS. , An ID ROM 38 in which the ID code of the base station BS is stored, a memory 39, a line processing CPU 40 for controlling communication with an exchange (not shown),
It comprises a transmission circuit 41 for transmitting data to and from an exchange. Note that the wireless transmission / reception unit 31 includes a reception amplifier 31
1, first mixer 312, second mixer 313, intermediate frequency generator 314, quadrature modulator 315, third mixer 316, reception amplifier 317, antenna switch 318, and first to third mixers
It comprises a third mixer and a synthesizer 319 for controlling the frequency of the quadrature modulator.

Here, the wireless processing CPU 37 is a wireless slave unit P
When control data indicating dial operation information indicating an S transmission operation is received via the wireless transmission / reception unit 31, the modem demodulator 32, and the channel codec 33, the control data is transmitted to the line processing CPU 40. Line processing CP
The U40 can call the other party by transmitting the control data to the exchange via the transmission circuit 41. Then, when the other party answers, a call is made between the other party and the wireless slave device PS via the base station BS. On the other hand, when the line processing CPU 40 receives control data such as incoming data from the exchange via the transmission circuit 41, it transmits this control data to the wireless processing CPU 37. Wireless processing CPU
Reference numeral 37 denotes the received control data in the channel codec 3
Send to 5. As a result, the control data is transmitted to the channel codec 35, the modem modulator 36, and the wireless transmitting / receiving unit 31.
Is transmitted to the wireless slave device PS via the wireless LAN device, and the wireless slave device PS rings. Here, when the radio personal station PS responds to this incoming call, the response control data is transmitted to the exchange via the base station BS, and the incoming call through the base station PS of the radio personal station PS is started.

[0007] In contrast to the flow of control data via the control channel of the radio line as described above, the flow of voice data via the speech channel is as follows. That is, voice data during a call from the wireless handset PS via the wireless transmitting / receiving unit 31, the modem demodulator 32 and the channel codec 33 is transmitted to the voice codec 34. Then, the signal is converted into an analog signal by the voice codec 34 and transmitted to the exchange. Further, the analog voice signal from the exchange is converted into a digital signal by the voice codec 34 and transmitted to the wireless personal station PS via the channel codec 35, the modem modulator 36 and the wireless transmission / reception unit 31. Note that the base station BS can transmit and receive a voice signal as it is to the exchange without converting it into an analog signal.

Next, FIG. 1 is a block diagram showing a configuration of the radio personal station PS. The wireless handset PS includes a wireless transmitting / receiving unit 11, a modem demodulator 12, channel codecs 13, 15, a voice codec 14, and a modem demodulator 16 having the same configuration as the wireless transmitting / receiving unit 31 of the base station BS. An ID ROM 18 for storing its own ID code, an operation unit 19 equipped with various keys such as dial keys, a display unit 20, and a buzzer 21 that sounds when receiving a call are connected to the CPU 17 for controlling the wireless slave unit PS. Is done. The wireless voice codec 14 is connected to a receiver 23 as a receiver and a microphone 24 as a transmitter.

In a digital radio base station BS such as a PHS (Personal Handy Phone System), a communication channel of a radio line is divided into four transmission / reception time slots per channel. Here, when a call is newly performed by the wireless handset PS when a call is being made by three other wireless handset units at the base station BS having one call channel, the base station BS cannot make a call. Is returned to the corresponding wireless slave device PS via the control channel. Upon receiving the call disable data, the wireless handset PS performs a predetermined display on the display unit 20. Further, when the communication channel of the wireless line is vacant (that is, when there is an empty communication slot in the communication channel), the base station BS sets the wireless terminal P
The calling data (dial information) based on the calling operation of S is sent to the exchange as described above. Then, at this time, upon receiving data indicating that the other party is busy from the exchange side during the other party busy, the base station BS returns the other party busy data to the radio personal station PS via the control channel. In this case, the wireless handset P
S sends a busy tone from the buzzer 21 and displays on the display unit 20 that the other party is busy.

As described above, when a call is made from the wireless slave unit PS based on the operation of the user, the wireless slave unit PS indicates that the communication is disabled and the other party is busy due to the wireless line being full returned from the base station BS. Receiving the call prohibition data and displaying the corresponding data, the user of the slave unit PS is made to identify the reason for the call prohibition.

FIG. 3 is a flow chart showing the operation of the CPU 17 of the radio personal station PS. The operation of the main part of the present invention will be described with reference to this flowchart. When the mobile station PS enters the area of the base station BS, the base station BS and the mobile station P
In each memory of S, the position registration in which the ID of the other party is registered is performed. In step S1, the CPU 17 of the wireless slave device PS first determines whether or not the ID of the base station BS is registered in the memory 17A, and thereby determines whether the base station B has been registered.
It is determined whether or not the area is within the range of S.

Here, if it is within the range of the base station BS, a picture of the antenna is displayed on the display unit 20 in step S2,
The user is notified that the vehicle is within the range of the base station BS. Subsequently, when a dial call by a user's operation is detected, it is stored as a redial number in the memory 17A, and the "call" is determined to be "Y" in step S3, and step S4 is performed.
To display "outgoing call display" on the display unit 20. Then, the dial information by the user's operation is transmitted to the base station BS through the control channel of the wireless line, and the presence / absence of reception of the communication disabled data due to the fullness of the communication channel of the wireless line returned from the base station BS is determined. The determination is made in S5.

[0013] In this case, if the above-mentioned call-disabled data cannot be received, "is the base station BS OK?"
Is determined to be "Y", and dial information is displayed on the display unit 20 in step S6 assuming that dial transmission is possible. Then, by transmitting the operated dial information from the base station BS to the exchange, the presence or absence of the above-mentioned call-disabled data indicating that the other party is busy is returned from the exchange via the base station BS. The determination is made in S7. Here, if the call-disabled data due to the other party's talking is not received, the “other party call” in step S7 becomes “Y”, and the calling process is performed in step S8 and the calling unit is displayed on the display unit 20. The process moves to step S21.

By receiving the call-disabled data due to the fullness of the communication channel of the base station BS, if the determination of “is the base station BS OK” in step S5 becomes “N”, the CPU 17 displays “20” on the display unit 20. In step S9, a BS full process for performing "communication channel full display" is executed. Subsequently, it is determined in step S10 whether or not the redial execution key in the operation unit 20 has already been pressed (operated), and if this is "N", it is determined in step S11 that the redial execution key has been pressed. When the redial execution key is pressed, the process waits (waits) for a predetermined time in step S12, returns to step S5, and returns to the "base station BS" again.
Is OK? "

Here, when the communication of the other mobile station via the base station BS ends, the communication channel becomes vacant and the determination in step S5 becomes "Y". The user is notified of the availability of the BS communication channel by performing a dial display. In this case, redial transmission for transmitting dial information stored in the memory 17A is performed. When the redial execution key is not operated and the determination in step S11 is “N”, the display on the display unit 20 is deleted,
Returning to step S1, it is determined again whether the vehicle is within the range of the base station BS. If the redial execution key has already been operated and the determination in step S10 becomes "Y", the process immediately returns to step S5 to determine again "is base station BS OK?"

If the call-disabled data due to the other party's talking is received and the determination of "other party calling" in step S7 is "N", the CPU 17 drives the buzzer 21 in the busy process in step S13 to activate the busy tone. And a busy display is displayed on the display unit 20 to indicate that the other party is talking. Thereafter, it is determined in step S14 whether or not the redial execution key has already been operated, and if this key has already been operated, the flow returns to step S5 to determine again whether the base station BS is OK. If the redial execution key has not been operated, the flow shifts to step S11 to determine whether the redial execution key has been pressed as described above. Subsequently, when the redial execution key is pressed, the process waits for a predetermined time in step S12, and then returns to step S5.
Then, when the other party is busy, step S6 according to "Y" of "is base station BS OK" in step S5?
Step S
When the "other party call" of step 7 becomes "Y", a call-in-progress display is displayed on the display unit 20 in step S8, and the user is notified.

In this manner, dial transmission by dial key operation or redial transmission by one redial execution key operation is performed. Further, after the call-in-progress display processing in step S8 by the other party's call, the "hand" in step S21 is executed. The process proceeds to the determination of the presence / absence of “over”. In step S21, it is determined whether or not there is a handover indicating switching of the base station due to the movement of the wireless slave device PS from the base station currently in use to the adjacent base station. Here, if the determination of the handover in step S21 is “Y”, it is determined in step S22 whether or not the switching has been performed normally. If the switching is normal, the process returns to step S21. If the switching to the adjacent base station is not performed normally, the determination of “handover NG” in step S22 becomes “Y”. In this case, the handover NG process is performed in step S23 and the display unit 20 displays Perform handover NG display. And then
The process proceeds to step S31. At this time, if the other party number is stored in the memory 17A (if "Y" in step S31) and the redial execution key is operated (if "Y" in step S32), step S5 is performed. Returning to step (3), confirm that the base station BS is OK, and make a redial call.

As a result of this redial transmission, the other party is called and if the determination in step S7 becomes "Y", step S is executed.
At step 8, a call-in-progress display is displayed on the display unit 20. As described above, even when handover has failed, when the other party's call is made as a result of redial transmission, a call-in-progress display is displayed on the display unit 20 to notify the user. When the handover fails, the other party number is not stored (“N” in step S31), or the redial execution key is not operated even if the other party number is stored (step S31).
In the case of “N” at 32), the display on the display unit 20 is erased, and the process returns to step S1 to determine whether it is within range.

On the other hand, if "N" is obtained in step S21 without a handover being performed, then this radio personal station PS
Is detected in step S24 by detecting the radio wave intensity from the base station BS by using a detection unit (not shown). Here, when the determination of “out of service area” in step S24 becomes “Y”, out-of-service processing is performed in step S25 and out-of-service display is performed on the display unit 20. Then, thereafter, the process proceeds to step S31 as in the case of handover NG, and the same processing is performed in step S31 and thereafter. Therefore, even if the mobile phone goes out of the service area of the base station BS and enters the service area and redials the call of the other party,
A call-in-progress display is displayed on the display unit 20 to notify the user.

Next, if the determination of "out of service area" is "N" in step S24, then in step S26 this slave unit PS
It is determined whether or not the call is in progress, and if the call is not in progress, it means that the call is in progress.
Judge at 27. If the other party does not respond to this call, the process returns to step S21 to determine again whether or not there is a handover. If the other party's response can be detected, the other party's response process is performed in step S28 to set the slave unit PS in the talking state, and "display the other party's response" on the display unit 20.

Next, when the determination of "during call" in step S26 is "Y", whether or not the other party has ended the call is determined in step S26.
If it is determined in step 29 that the other party has ended the call, in step S30 the end processing is performed to erase the display on the display unit 20, and it is determined whether or not the called party number (dial information) is stored in the memory 17A. It is determined in step S31. Here, if the other party number is not stored in the memory 17A, the process returns to step S1 to determine again whether the mobile phone is within the service area. If the other party number is stored, it is determined in step S32 whether or not the redial execution key has been operated. If this key has been operated, the process returns to step S5 to perform redial transmission via the base station BS, and returns to step S5. Is the base station BS OK? " If the determination in step S32 is "N" without operating the redial execution key, the process returns to step S1.

Next, when the other party does not end the call and the determination of "end of the other party" is "N" in step S29, in step S33, the own handset (that is, the wireless handset PS) is turned off. The presence or absence of the end call is determined in step S33. If the own handset is continuing the call, the process returns to step S21 to determine again whether there is a handover. If the end of the handset is detected and the determination in step S33 is "Y", the end of the call is processed in step S34, and the process ends.

As described above, the radio personal station PS detects data and radio field intensity from the base station BS each time the state changes,
The display unit 20 displays the current status of the wireless personal station PS and the base station BS.
Is displayed. As a result, the slave unit PS
Of the current base station BS from the display status of the display unit 20
In addition, appropriate measures can be taken according to the state of the wireless client device PS. Further, when the wireless handset PS is in a call-disabled state, the user can easily confirm the cause of the call failure from the display state of the display unit 20, and if it is necessary to make a redial call at this time, redialing is performed. Redial transmission can be reliably performed by a simple operation of operating the execution key only once.

In general, when a user of a wireless communication device transmits a call to a partner, the user operates the dial key of the wireless communication device and then touches the wireless communication device with his / her ear to confirm the connection with the communication device. When the busy tone is heard due to the connection failure, the wireless handset is again removed from the ear and the dial operation is performed. Then, in order to confirm the connection with the other party, the wireless slave device is again put on the ear to listen to the ringing tone or the busy tone, and when the busy tone is heard, the redial operation is performed again. Therefore, the user of the wireless slave device repeats the redial operation and the operation of confirming the connection with the other party when the call to the other party and the connection with the other party become impossible. In such a case, according to the present invention, it is possible to reliably perform redial transmission and connect to the other party only by operating the redial execution key once. When performing a redial transmission operation, another key or the like may be operated once without operating the redial execution key.

When the status of the base station BS is detected and an error display such as a radio line full status display of the base station BS, a busy state of the other party and a handover failure is displayed, an alarm sound is issued from the buzzer 21. Can also be output. In addition, when the radio line of the base station BS is full due to the call of another slave unit when entering the area from outside the area of the base station BS, or the radio line of the base station BS changes from a full state to a non-full state. If the other party is busy when redialing is performed, the buzzer 21 can output an alarm sound and display the fact on the display unit 20 each time. Also, when the other party is busy again when making a redial call, the system waits for a certain period of time until the next redial is sent, and then makes a redial call. At the same time, a display to that effect may be displayed on the display unit 20.

[0026]

As described above, according to the present invention, a digital wireless telephone device having a display unit and an operation unit and capable of wireless communication with a base station detects information wirelessly transmitted from the base station. Since the detection means and the display control means for displaying the current state on the display unit based on the information detected by the detection means are provided, the current state is displayed on the display unit. The user can take appropriate action according to the displayed current state. That is, the user of the wireless slave device can easily identify the current status of the wireless slave device and the base station from the display status of the display unit, and thus, for example, a call cannot be made because the wireless line of the base station is full. In such a case, useless redial transmission repeatedly transmitted by the user of the slave unit can be avoided. In addition, when the current state displayed on the display unit indicates a call-disabled state, a redial call is made by one operation. For example, when a call is disabled when a call is made, the user of the slave unit may redial. When it is necessary to make a call, it is possible to connect to the other party by simply performing a redial call with a simple operation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a digital wireless telephone device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a base station wirelessly connected to the wireless telephone device.

FIG. 3 is a flowchart showing an operation of a main part of the wireless telephone device.

[Explanation of symbols]

11, 31: wireless transmission / reception unit, 17: CPU, 17A, 3
9 memory, 17B timer, 20 display unit, 21 buzzer, 37 CPU for wireless processing, 40 CP for line processing
U.

Claims (2)

[Claims] 1. A digital wireless telephone device comprising a display unit and an operation unit, and capable of wireless communication with a base station, wherein: a detection unit for detecting information wirelessly transmitted from the base station; Display control means for displaying a current state on the display unit based on information. 2. The digital wireless telephone device according to claim 1, further comprising: a redial transmission unit that performs redial transmission by one operation when a current state displayed on the display unit indicates a call unavailable state. .