JPH08298684A - Portable terminal - Google Patents

Abstract

PURPOSE: To enable a user to know a reason why it is not usable when a portable terminal such as a radio telephone set can not be used. CONSTITUTION: The portable terminal is provided with a receiving state detecting part 21 for analyzing the receiving state of a receiving part 12 and a display part 23 for displaying a message in accordance with the analytical result of the detecting part 21. At the time of detecting a failure in the connection or hold of a communication line, a prescribed message is displayed on the display part 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal device such as a wireless telephone.

[0002]

2. Description of the Related Art Conventionally, various types of wireless telephones have been put into practical use in which a telephone line is set by performing wireless communication with a base station. When making a call with this wireless telephone, it is necessary to perform wireless communication with the base station, so it is necessary to be within a service area where wireless communication with the base station is possible. Here, some conventional wireless telephones have a function of receiving some control signal transmitted from the base station and displaying the received level in several steps. By performing the above, it is possible to determine to some extent whether or not it is within the service area where a call can be made.

[0003]

However, when the wireless telephone is actually used, even if it is within the service area, it may be wirelessly communicated with the base station for some reason (bad radio wave condition, line congestion, etc.). I failed to set up the telephone line,
Even if you can not make or receive calls, or you can not maintain the wireless telephone line even after the call is started,
Accidents such as interruption of calls may occur.

Such a non-usable state occurs relatively frequently when a wireless telephone is used, but when it occurs too much when used with a specific wireless telephone, the user (the owner of the wireless telephone). Tend to suspect that the wireless phone in question is out of order.

In such a case, the owner of the wireless telephone is
Although a company that manages the telephone will request inspection and repair, since the telephone itself is normal, wasteful labor is consumed for the inspection and repair.

On the contrary, even if the wireless telephone itself has an abnormality and sometimes cannot make a call, the user judges that the telephone cannot be called because of a poor radio wave condition and the necessary repair. There is a possibility that it will continue to be used without being removed.

In view of these points, it is an object of the present invention to make clear the reason why a mobile terminal device such as a wireless telephone cannot be used.

[0008]

In order to solve this problem, the portable terminal device of the present invention has a receiving state detecting section for analyzing the receiving state in the receiving section and an analyzing state in the receiving state detecting section. According to the present invention, a display unit for displaying a message is provided, and a predetermined message is displayed on the display unit when it is detected that connection or maintenance of the communication line has failed.

Further, the portable terminal device of the present invention includes a transmission / reception state detection unit for analyzing the transmission state or reception state of the transmission unit or the reception unit, and a display unit for displaying a message according to the analysis state of the transmission / reception state detection unit. And when the transmission / reception state detection unit detects an abnormality in the transmission state or the reception state,
A predetermined message is displayed on the display unit.

[0010]

According to the present invention, when it is detected that the connection or maintenance of the communication line has failed, a predetermined message is displayed on the display unit, so that it is announced that the connection or maintenance of the communication line has failed.

Further, according to the present invention, when an abnormality in the transmission state or the reception state is detected, a predetermined message is displayed on the display unit, so that the abnormality of the terminal device is notified.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

This example is applied to a wireless telephone. First, the structure of the wireless telephone is shown in FIG. This radio telephone supplies a signal received by an antenna 11 to a receiving section 12 through an antenna duplexer 25, receives a signal of a predetermined transmission channel in the receiving section 12, and modulates and demodulates the processed received signal. The signal is supplied to the unit 13 and demodulated into a baseband signal. Then, the demodulated baseband signal is supplied to the baseband processing unit 14.

The baseband processing unit 14 performs baseband processing for extracting a voice signal and control data from the received signal, supplies the extracted voice signal to the voice processing unit 15, and controls the control data to the control unit 21. Supply to.

The voice processing unit 15 uses VSEPL (Vect
or Sum Excited Linear Pre
A circuit that performs audio signal processing for audio compression / expansion such as digital coding (when configured as a digital portable terminal that performs digital transmission), and supplies the audio signal extracted from the received signal to the speaker 17 via the amplifier 16. And let the sound come out.

Further, the control unit 21 composed of a microcomputer performs communication control such as setting and switching of communication channels based on the control data supplied from the baseband processing unit 15.

The audio signal output from the microphone 18 is
The audio signal is supplied to the audio processing unit 15 via the amplifier 21 to perform audio processing for transmission, and then is supplied to the baseband processing unit 14 for baseband processing to produce an audio signal for transmission. The signal is supplied to the modulation / demodulation unit 13, and modulation processing for transmission is performed. Then, the modulated signal is supplied to the transmission unit 20 to be a transmission signal of a predetermined transmission channel, and this transmission signal is supplied to the antenna 11 via the antenna duplexer 25 and wirelessly transmitted.

An operation unit 22 is connected to the control unit 21, and the operation of keys on the operation unit 22 causes the control unit 21 to control various operations as a telephone. For example,
The number keys can be operated to input a telephone number at the time of calling, and the operation of the call key can perform a call process to the input telephone number.

Further, there is provided a display section 23 composed of a liquid crystal display panel which is displayed under the control of the control section 21, and the display section 23 displays characters and numbers. As the display on the display unit 23, for example, in addition to the display of the telephone number of the transmitted call, the display of the call time, etc., when the communication with the base station cannot be normally performed, the state is displayed by a message such as characters. I am doing it. The display state will be described later. The liquid crystal display panel included in the display unit 23 has a relatively small number of characters that can be displayed. When displaying a message having a large number of characters, for example, so-called scroll display in which displayed characters are sequentially moved is performed. To deal with.

Further, a memory 24 is connected to the control unit 21 to store data registered by the user, such as a telephone number, and to store data on an abnormal state detected by the control by the control unit 21. I remember it. The message data to be displayed on the display unit 23 at a predetermined time is also stored in the memory 24 in advance. The memory 24 also stores a diagnostic processing program for performing a self-diagnosis for determining whether the wireless telephone is operating normally. A non-volatile memory is used as the memory 24.

Further, the radio telephone of this example supplies the data of the received electric field strength (RSSI) of the signal received by the receiver 12 to the controller 21 via the baseband processor 14. Also, data obtained by monitoring the transmission state of the transmission unit 20 (hereinafter referred to as transmission monitor data) is also supplied to the control unit 21. The transmission monitor data may be, for example, data indicating whether the output of the transmission signal has a prescribed value.

Further, the control unit 21 has a memory 24 at a predetermined time.
The self-diagnosis (that is, the judgment as to whether or not the various processes in the own machine are normal) is performed by the process based on the diagnostic process program stored in.

Next, the operation of making a call using the wireless telephone of this example will be described with reference to the connection sequence of FIG. Here, an example in the case of being configured as a digital wireless telephone for transmitting digital data will be described.

First, the processing for making a call from the wireless telephone of this example will be described. The terminal station shown in FIG. 2 corresponds to the wireless telephone of this example, and a base station that communicates with this terminal station. The process between and is shown in FIG. When making a call, the operation unit 22 is operated to input the telephone number of the called side (or after the stored telephone number is called), and then the call key is pressed. When this calling key is pressed, the control unit 21 supplies the baseband processing unit 14 side with necessary data (calling station number, called party number, etc.) as a calling message, and sends this calling message. After being modulated by the modulation / demodulation unit 13, the transmission unit 20 performs transmission processing and wirelessly transmits to the base station (step 101). At this time, transmission is performed using a control channel that is predetermined for each base station.

When the call message is received by the base station, the unused channel (empty channel) of the voice channels assigned to the base station is judged,
A channel designating message designating a voice channel is transmitted to the source terminal station using the same control channel (step 102).

When the terminal station receives this channel instruction message and the control section 21 judges, the reception channel in the reception section 12 and the transmission section 20 perform transmission / reception on the voice channel instructed at this time. Switch the transmission channel of.

Then, the base station transmits a synchronous burst signal (a signal having a predetermined pattern) on the designated voice channel (step 103).

Then, after receiving the synchronous burst signal on the terminal station side and setting the reception state in synchronization with the synchronous burst signal, the synchronous burst signal is returned to the base station side using the upstream voice channel. Then, the base station side sets the reception state in synchronization with the signal transmitted from the terminal station side (step 104). As a result, synchronization is established, and the call channel operation is started (step 105).

At this time, the terminal station side judges the line status by itself and informs it to the base station side as a radio condition report.

To end the call at this time, a communication disconnection command is sent from the base station using the voice channel, and when the communication disconnection command is received at the terminal station side, communication on this voice channel is performed. Is completed (step 106). When the call is terminated by the request from the terminal station, the communication disconnection request data is transmitted to the base station through the voice channel, and the base station sends the communication disconnection command as a response to the communication disconnection request data.

Further, when the deterioration of the communication line condition is detected by the wireless condition report from the terminal station side, a communication disconnection command may be sent from the base station to forcibly disconnect the communication. In addition, when a so-called handoff process is performed in which the terminal station switches the base station with which the terminal station communicates with the movement of the terminal station, instead of sending the communication disconnection command, the handoff command is sent from the base station and the newly connected base station is connected. Specify the voice channel on the station side.

The communication processing described so far has been described for the case where the communication between the terminal station and the base station has been made well, but in reality the processing may be interrupted at any step depending on the communication state. . Next, a case where processing is interrupted by the wireless telephone of this example will be described.

First, after a calling operation is performed and a calling message is transmitted in step 101, step 1 from the base station is performed.
There may be no audio channel designation in 02. At this time, the communication state with the base station may be poor, and the base station may not be able to correctly receive the calling message. When the voice channel is not instructed even after a predetermined time elapses after the calling operation is performed in this way, the control unit 21 determines that the line connection has failed, and the control unit 21 controls the display unit 2 to operate.
Display the message corresponding to 3. As this message display, the message data stored in the memory 24 is used to display "Please try again because the radio wave is weak" to prompt the operator to perform the re-operation.

In addition, after transmitting the calling message in step 101, data indicating that the line is congested (line congestion data) may be transmitted from the base station on the control channel. In such a case, the communication channel used by the base station is in an empty state, and when the terminal station receives the line congestion data and the control unit 21 determines the content of this data, the control unit 21 The message corresponding to the display unit 23 is displayed under the control of. As the message display, the message data stored in the memory 24 is used to display "The line is busy. Please wait." To notify the operator that the line is busy.

Also, after the processing of steps 101 and 102 is performed and the synchronization burst signal cannot be received by the terminal station after the synchronization burst signal is transmitted from the base station, the control unit 21 similarly connects the line. When it is determined that the failure has occurred, the control unit 21 controls the display unit 23 to display a message "Because the radio wave is weak, please call again."

When the terminal station receives the synchronous burst signal and returns the synchronous burst signal in step 104, and the base station determines that the returned synchronous burst signal is in a bad state, The call state is not established by the transmission and reception of the voice signal, and the process directly proceeds to the transmission of the communication disconnection command in step 106. Even when the direct communication disconnection command is received in this way, the control unit 21 determines that the line connection has failed, and the control unit 21 controls the display unit 23 to display the message "The radio wave is weak. Please call again. Is displayed.

After the voice signal is transmitted / received in step 105 and the call is started, the base station judges that the communication line cannot be maintained and gives a communication disconnection command based on the radio condition report. If sent, the control unit 2
1 determines that the line cannot be maintained, and the control unit 21 controls the display unit 23 to display a corresponding message. As the message display, the message data stored in the memory 24 is used to display "The radio wave has deteriorated and the call has been disconnected", and the line has been disconnected due to the deterioration of the communication line condition. To the operator.

In addition to the line disconnection based on the command from the base station, the terminal station side may reduce the received electric field strength,
A similar message is displayed even when it is determined that communication cannot be maintained due to loss of synchronization or the like.

Similarly, when the communication line with the new base station fails to be set when switching to another base station in the handoff process after shifting to the call state, the display unit 23 is similarly operated.
The message "The call has been disconnected due to poor radio wave condition" is displayed on the screen to notify the operator that the line has been disconnected. Or, instead of just announcing that the radio wave condition has deteriorated,
It may be possible to display a message indicating that the handoff process has failed to some extent. For example, it may be displayed such as "The call has been disconnected due to the movement of the current position. Please call again."

Note that such a display when the line maintenance fails is performed in the same manner even when the terminal station side is the called side telephone.

When the line connection or the line maintenance fails due to a factor on the terminal station side (for example, battery exhaustion, circuit abnormality, etc.) instead of the failure of the line connection or the line maintenance due to the communication line state, Under the control of the control unit 21, the display unit 23 is displayed to that effect by a message such as characters. For example, when the control unit 21 detects that the voltage of the battery has dropped to such a degree that it is difficult to maintain the communication in the telephone that constitutes the terminal station, the communication line is disconnected and the display unit 23 displays “The call is exhausted due to exhaustion of the battery. It has run out. Please replace the battery and call again. "Is displayed.

When an abnormality such as a transmission output is detected in the transmission monitor data supplied from the transmission section 24 to the control section 21, it is judged that the wireless telephone constituting this terminal station is out of order, and the display section. At 23, a display indicating that there is a failure is displayed. For example, "Please bring me to the service" is displayed. Although only the transmission status is monitored here, the reception status may also be monitored to determine whether or not there is a failure and display the corresponding status.

In addition to such determination of the transmission monitor data, the self-diagnosis program stored in the memory 24 is executed at any time under the control of the control unit 21 and when an abnormality is found in any circuit, the same " Please bring it to the service. " At this time, the details of the failure may be displayed to some extent.

As described above, according to the wireless telephone constituting the portable terminal device of the present embodiment, when it is determined that the connection of the communication line is failed or the communication line is not maintained, the display corresponding to each state is displayed in characters. Therefore, when the line cannot be connected or maintained, the user of this terminal device can accurately grasp the state at that time. For example, when a state in which a call cannot be made continues due to a poor communication state, the user of this terminal device does not doubt that the terminal device is out of order. Therefore, even if the user (owner) of this terminal device is not out of order, he / she will not be asked for repair or inspection, and accordingly unnecessary labor will not be spent.

Further, in the case of the present example, the transmission state and the reception state are monitored, and if the state is not good, the display indicating that there is a failure is displayed. Therefore, when the terminal device fails, By knowing that, it is possible to take a prompt response. For example, if there is a case where a call cannot be made due to a malfunction of the terminal device, it is not erroneously determined that the call cannot be made due to poor radio wave condition, and the terminal device in the state requiring repair is repaired. It will not be left without it.

In the above embodiment, the present invention is applied to a digital type wireless telephone for transmitting and receiving digital data, but the present invention is also applicable to an analog type wireless telephone for transmitting and receiving a voice signal as an analog signal. is there.

Here, an example of a connection sequence when the wireless telephone shown in FIG. 1 is configured as a wireless telephone which transmits and receives as an analog signal is shown in FIG. After inputting the telephone number of the calling side (or after calling the stored telephone number), press the call key. When the call key is pressed, the control unit 2
1 supplies data required as a calling message (the number of the local station, the number of the called side, etc.) to the baseband processing unit 14 side, and after this calling message is modulated by the modulation / demodulation unit 13, the transmission unit 20 The transmission process is performed and the base station is wirelessly transmitted (step 201). At this time, transmission is performed using a control channel that is predetermined for each base station.

When the base station receives this calling message, it determines the unused channel (empty channel) among the voice channels assigned to this base station,
A channel instruction message for instructing a voice channel is transmitted to the source terminal station using the same control channel (step 202).

When the terminal station receives this channel instruction message and the control section 21 judges, the reception channel in the reception section 12 and the transmission section 20 perform transmission and reception on the voice channel instructed at this time. Switch the transmission channel of.

Then, the base station transmits a signal having a frequency (for example, 6 kHz) different in band from the transmission audio signal called a super audio tone signal (hereinafter referred to as SAT signal) on the instructed audio channel ( Step 203).

Then, the SAT is received by the terminal station side.
After receiving the signal, the signal is returned to the base station using the upstream voice channel (step 204). That is, the modulator / demodulator 13 transmits the SAT signal included in the signal of the downlink voice channel received by the receiver 12 in the wireless telephone to the transmitter 20.
And send it on the upstream voice channel.

Then, the base station side monitors the SAT signal returned from the terminal station side, and judges the state of the communication line with the terminal station from the signal state. That is, when the returned SAT signal is a signal having substantially the same waveform as the SAT signal transmitted from the base station, it is determined that the line is good, and when the waveform distortion is large, it is determined that the line condition is bad.

Then, while continuously transmitting and receiving the SAT signal in these steps 203 and 204, the voice signal is transmitted using the voice channel between the base station and the terminal station, and the SAT signal is transmitted via the base station. A call is made with the connected called party (step 205). In this case, since the SAT signal and the voice signal have different frequency bands, there is no problem even if they are transmitted at the same time.

To terminate the call at this time, a communication disconnection command is sent from the base station using the voice channel, and when the communication disconnection command is received at the terminal station side, communication on this voice channel is performed. Is finished (step 206).

When the processing is interrupted during each processing, various messages are displayed as in the case of the digital transmission described in the above embodiment. In this case, in the case of analog transmission, the SAT signal is transmitted instead of the synchronization burst used in digital transmission, and the line is disconnected based on the reception failure of the SAT signal. This can be dealt with by replacing the processing performed based on the burst with processing based on the reception state of the SAT signal.

The present invention can also be applied to similar portable terminal devices other than wireless telephones. That is, the present invention can be applied to various devices as long as it is a portable terminal device that communicates with a base station. For example, it can be applied to a data terminal device that communicates with a base station for data communication. In this case, the present invention can also be applied to a terminal device having only a reception function or a transmission function.

The display characters in each state are shown as an example, and may be displayed in other sentences. If it is difficult to display kanji on the display,
You may make it display the text of the same purpose by a katakana, a hiragana, an alphabet, etc. Further, in the case of a display unit that cannot display such characters and can only display numbers, symbols, etc., it may be displayed by code numbers or symbols.

[0058]

According to the present invention, when it is detected that the connection or maintenance of the communication line has failed, a predetermined message is displayed on the display unit, so that it is announced that the connection or maintenance of the communication line has failed. The user can immediately grasp the current state of the terminal device, and will not make an erroneous determination that the terminal device is out of order.

In this case, when the deterioration of the radio wave condition of the signal received by the receiving unit is detected, a predetermined message is displayed on the display unit, so that the user of the terminal device has deteriorated the radio wave condition. Then, it is possible to immediately take a measure such as making a call again after the radio wave condition is restored.

When the receiving unit receives the data indicating that the communication line is congested, the display unit displays a predetermined message, so that the user of the terminal device has the communication line congested. It became clear that the line could not be set up, and it became possible to take measures such as waiting until the line became available.For example, the line connection could not be made due to congestion of the line, but the line connection was poor due to poor radio wave condition. There is no need to misunderstand that you cannot do it and move to a place where you can communicate better.

Further, according to the present invention, when the abnormality of the transmission state or the reception state is detected, a predetermined message is displayed on the display unit, so that the abnormality of the terminal device is notified. Therefore,
If the terminal device cannot connect or maintain the line due to some abnormality, it will not be erroneously determined that the line cannot be connected or maintained due to poor communication conditions, and it will be left without necessary repair. There is nothing.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a configuration of a wireless telephone to which an embodiment of the present invention is applied.

FIG. 2 is an explanatory diagram showing an example of a connection sequence of a digital wireless telephone.

FIG. 3 is an explanatory diagram showing an example of a connection sequence of an analog wireless telephone.

[Explanation of symbols]

 12 reception unit 13 modulation / demodulation unit 14 baseband processing unit 15 voice processing unit 21 control unit 23 display unit 24 memory

Claims (4)

[Claims] 1. A mobile terminal device which establishes a communication line with a base station and communicates with the base station, the receiving unit receiving a signal transmitted from the base station, and the receiving unit receiving the signal. A reception state detection unit that analyzes the state and a display unit that displays a message according to the analysis state of the reception state detection unit are provided, and the reception state detection unit may detect that the connection or maintenance of the communication line has failed. A mobile terminal device configured to display a predetermined message on the display unit when detected. 2. The mobile terminal device according to claim 1, wherein a predetermined message is displayed on the display unit when the deterioration of the radio wave condition of the signal received by the reception unit is detected. 3. The mobile terminal device according to claim 1, wherein when the receiving unit receives data indicating that the communication line is congested, a predetermined message is displayed on the display unit. 4. In a mobile terminal device which establishes a communication line with a base station and communicates with the base station, a transmitter for transmitting a signal to the base station, and a signal transmitted from the base station. A signal receiving unit, a transmission / reception state detection unit that analyzes the transmission state or reception state of the transmission unit or the reception unit, and a display unit that displays a message according to the analysis state of the transmission / reception state detection unit, A portable terminal device configured to display a predetermined message on the display unit when the transmission / reception state detection unit detects an abnormality in the transmission state or the reception state.