JPH11308164A - Simple base station for mobile object communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To warn a mobile station of the cut of communication and to avoid that communication during connection is suddenly cut for a person just doing communication. SOLUTION: When a commercial power monitoring part 18 detects the stop of commercial power and a state is switched to a battery backup state, a control part 19 calculates the backup remaining time of a battery 15 based on battery voltage detected by a battery voltage detection part 17 and selects a message that the system is in the battery backup state and a message showing the backup remaining time of the battery from a sound guidance part 14 and the output of the sound guidance part 14 is connected to a mobile station from a sound line interruption part 12 through a radio part 11. The mobile station can be a data terminal and guidance can be character data. Interruption against a line can be executed by switching. Since remaining time can be recognized, accordingly communication for a short time can be executed. Thus, a battery load is reduced and the life of the battery can be prolonged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simplified base station for a mobile communication system, and more particularly to a communication base station which is suddenly disconnected by a communicating person due to a shortage of battery capacity and a voltage drop from a battery backup state. The present invention relates to a simplified base station of a mobile communication system capable of avoiding the problem.

[0002]

2. Description of the Related Art Conventionally, in a simple type base station of this type of mobile communication system, when commercial power is stopped, a controller avoids resetting of frequency data due to an instantaneous interruption caused by switching to a battery. Therefore, only the transmission / reception unit is backed up by a battery, and the instantaneous interruption of communication is minimized. This technology is disclosed in, for example,
No. 6431.

[0003] However, when the battery capacity becomes insufficient and the voltage drops from the battery backup state, it is inevitable that the functional operation stops and the communication stops.

[0004]

In the above-described simplified base station of the conventional mobile communication system, when the commercial power supply stops and the battery capacity becomes insufficient from the battery backup state and the voltage drops, unless the commercial power supply is restored. No further power supply is required. In other words, the simple base station does not have sufficient power supply equipment or batteries, and when the commercial power supply stops and the battery capacity runs short from the battery backup state and the voltage drops, the connected communication suddenly stops. Since the mobile station is disconnected, the mobile station does not know whether it is a failure of its own device, a failure of the base station, or a failure of the system.

An object of the present invention is to solve the above problems,
An object of the present invention is to provide a simplified base station of a mobile communication system which can notify a mobile station of disconnection of communication.

[0006]

SUMMARY OF THE INVENTION A simplified base station of a mobile communication system according to the present invention communicates, via a wireless line, that a battery is in a battery backup state when a commercial power supply is stopped and the system is switched to a battery backup state. There is provided a means for transmitting a message to the mobile station.
With this configuration, the mobile station can recognize that the base station connected for communication is in the battery backup state, so that it is possible to deal with a sudden disconnection of communication with confidence.

Another specific configuration is as follows: when a commercial power supply is stopped and switched to a battery backup state, a battery voltage detecting section for detecting a battery voltage;
Guidance for sending a message indicating that the battery is in the battery backup state and the remaining battery backup time as a message, line connection means for connecting the output of this guidance to a mobile station via a wireless line, and a voltage detected by the battery voltage detection unit Control means for calculating the remaining backup time of the battery from the controller, controlling the line connection means, and connecting the guidance for transmitting a message corresponding to the calculation result to a wireless line connecting a mobile station for communication. That is.

With this configuration, the mobile station can recognize the remaining time until the communication is disconnected in addition to the fact that the base station connected for communication is in the battery backup state, so that the short-time communication corresponding to the remaining time can be performed. It can be performed. Therefore, the battery load can be reduced.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a functional block diagram showing an embodiment of the present invention. In FIG. 1, a simplified base station 10 of a mobile communication system connects a wired network connecting an ISDN line and a mobile phone as a mobile station connected via a wireless line to B.
It is assumed that the connection is made by a channel communication line.

The simplified base station 10 shown in FIG. 1 includes a radio unit 11, a voice line interrupt unit 12, a wired network connection unit 13, a voice guidance unit 14, a battery 15, a commercial power supply unit 16, and a battery voltage detection unit. 17 and a commercial power supply monitoring unit 18.

The radio section 11 forms a communication line with a mobile station via a radio line via an antenna. The voice line interrupt unit 12 connects the B channel between the wireless unit 11 and the wired network connection unit 13, and is controlled by the control unit 19,
The voice guidance unit 14 is interrupt-connected to the B channel,
It is assumed that the voice guidance unit 14 sends a voice message to a mobile station connected to the B channel.

It is assumed that the wired network connection unit 13 connects the ISDN line to the radio unit 11 via the voice line interrupting unit 12 with a B channel communication line. Voice guidance unit 1
Reference numeral 4 designates a message of "being in a battery backup state" and "a remaining backup time during which the battery capacity can maintain a call" according to the designation of the control unit 19, and transmits the message by voice.

The battery 15 receives and charges commercial power and supplies power to the simplified base station 10. The commercial power supply unit 16 receives commercial power and charges the battery, and supplies power to the simplified base station 10 like the battery. It is assumed that the battery voltage detection unit 17 detects the output voltage of the battery 15 and notifies the control unit 19 when receiving the notification of the power failure from the commercial power supply monitoring unit 18. Further, the commercial power supply monitoring unit 18 monitors the commercial power supply in the commercial power supply unit 16, detects the stop of the commercial power supply, and notifies the battery voltage detection unit 17 of the power failure.

Next, the main operation procedure of the simplified base station 10 will be described together with the details of the control unit 19 with reference to the flowchart of FIG.

When the commercial power supply monitoring unit 18 detects a stop of the commercial power supply (step 101) and is in a call (YES in step 102), the battery voltage detection unit 17 sets the commercial power supply monitoring unit 1
8 to detect the battery voltage (step 1
03), and notifies the control unit 19 of the voltage value.

The control unit 19 calculates the remaining backup time of the battery from the battery voltage received from the battery voltage detection unit 17 (step 104), and the voice guidance unit 14 selects the voice guidance corresponding to the calculated time. Drive (procedure 105) to instruct transmission of a message. The message of the voice guidance includes, for example, “the battery is in the battery backup state. The remaining talk time is 15 minutes” and the battery backup state and the remaining battery backup time are included.

At the same time, the control unit 19 controls the voice line interrupt unit 1
2 is controlled so that the above-mentioned voice guidance message is interrupt-connected to the B channel during the call (procedure 106).

The control unit 19 receives a message indicating the end of the guidance after a predetermined number of messages have been sent from the voice guidance unit 14 (step 107), and controls the voice line interrupt unit 12 to switch from the B channel of the voice line during the call. The voice guidance unit 14 is disconnected (procedure 108), and the procedure ends.

If the procedure 102 is "NO" and a new call connection request is issued to a line that is not busy, and the control unit 19 accepts the request via the wired connection unit 13 (YES in step 111), the control unit 19 recognizes that the battery is in the battery backup state, and proceeds to the above-mentioned procedure 103 for receiving the detection of the battery voltage from the battery voltage detecting unit 17. And the procedure to notify.

In this way, since the caller can be notified of the remaining battery backup time via the B channel, even if the mobile phone is disconnected from the mobile station due to a battery failure, the mobile phone as its own mobile station can be notified. Since it is possible to recognize that there is no failure and the intention to end the call in a short time works, the remaining time of the battery backup can be extended.

In the above description, it has been described that the voice guide message is transmitted by the B channel of the voice line connected to the mobile phone as the mobile station. However, when the data terminal is used and the message can be displayed on a screen, the guidance is provided. May be a text message. Further, although the description has been made assuming that the voice line is interrupted, a configuration may be adopted in which a message is sent to each of the mobile station and the wired terminal via the wireless line by temporarily switching.

[0023]

As described above, according to the present invention, when the commercial power supply is stopped and switched to the battery backup state, the remaining backup time of the battery is calculated.
By sending a message to the mobile station communicating via a wireless line that the battery is in the battery backup state and the remaining time of the battery backup, the mobile station can be notified of the disconnection of the communication. It is possible to obtain an effect of preventing a sudden disconnection for the person. Further, since the mobile station can recognize that the base station connected for communication is in the battery backup state, it is possible to cope with a sudden disconnection of communication with confidence. Furthermore, since the remaining time until the communication disconnection can be recognized,
Short-time communication corresponding to the remaining time can be performed.
Therefore, the effect of reducing the battery load and extending the life of the battery can be obtained.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing one embodiment of a main operation procedure of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Simplified base station 11 Radio section 12 Voice line interruption section 13 Wire network connection section 14 Voice guidance section 15 Battery 16 Commercial power supply section 17 Battery voltage detection section 18 Commercial power supply monitoring section

Claims (5)

[Claims] 1. A mobile unit, comprising: means for sending a message to a mobile station communicating via a radio line that a battery backup state has been established when a commercial power supply is stopped and the apparatus is switched to a battery backup state. A simple base station for communication systems. 2. A battery voltage detecting section for detecting a voltage of a battery when a commercial power supply is stopped and switched to a battery backup state, and a guidance for transmitting a message indicating that the battery is in the battery backup state and the remaining time of the battery backup. And line connection means for connecting the output of this guidance to a mobile station via a wireless line, and calculating the remaining backup time of the battery from the voltage detected by the battery voltage detection unit, and controlling the line connection means. And control means for connecting the guidance for transmitting a message corresponding to the calculation result to a wireless line connecting the mobile stations to communicate with each other. 3. The mobile station according to claim 1, wherein the mobile station is a telephone, and a message to be transmitted is a voice message connected to a communication channel (B channel) conforming to an ISDN (Integrated Services Digital Network) communication protocol. A simplified base station for a mobile communication system. 4. The mobile communication system according to claim 1, wherein the message is connected by a temporary interruption when a commercial power supply is stopped for a line in communication and the state is switched to a battery backup state. Simplified base station. 5. The mobile device according to claim 1, wherein the message is temporarily connected to the connection request when a commercial power supply is stopped and a connection request is made in a battery backup state. Simple base station for body communication system.