JP2984605B2 - Portable wireless telephone system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a portable radio telephone system.

[0002]

2. Description of the Related Art A conventional portable radio telephone system will be described with reference to the drawings.

FIG. 4 is a block diagram showing an example of a conventional portable radio telephone system.

FIG. 4 shows the contents of this conventional portable radio telephone system disclosed in Japanese Patent Laid-Open Publication No. Hei 6-315179. In a situation where all telephone lines are used, the radio base station 102 newly makes a call. Wireless telephone device 10
2 is notified of busy, and the identification number of the corresponding wireless telephone device 102 is stored in the identification number memory 111 of the wireless base station 101, and when a free line is generated, the ringer 118 of the corresponding wireless telephone device 102 is sounded. . The user can turn on the hook switch 119 and press the re-call button 130 within a certain period of time after the call line is secured, so that the call can be made. If it is not pressed within a certain period of time, the call line will be released.

[0005]

In this conventional portable radio telephone system, when all telephone lines are in use, a busy telephone is notified to a radio telephone apparatus newly calling, and a radio base station is provided. The identification number of the corresponding wireless telephone device is stored in the identification number memory of the wireless telephone device, and when a vacant line occurs, the corresponding telephone device is called. However, there is a problem that a meaningless outgoing call operation is performed because the line is not used even though the line is completely used and the outgoing call cannot be made.

[0006] In addition, since the user thinks that a call can always be made within the service area unless the other party is busy, there is a problem in that a meaningless calling operation is performed again and again.

[0007]

Mobile radio telephone system of the present invention SUMMARY OF] from a base station to be connected to multiple communication lines, and a plurality of portable radio telephone within that connect via a wireless line to the base station In the portable radio telephone system, the base station is configured such that all of the plurality of communication lines are in use.
Sending a control signal indicating that the plurality of communication lines are all in use to the plurality of mobile wireless telephones in the service area,
Inform the portable radio telephone not in a call that calling is impossible.

[0008] Mobile radio telephone system of the present invention includes a base station that connects to multiple communication lines, the portable radio telephone system comprising a plurality of portable radio telephone within that connect via a wireless line to the base station The base station detects that all of the plurality of communication lines are in use, and that all of the plurality of communication lines are in use by the first detection means. Is detected, a control signal indicating that all of the plurality of communication lines are in use and transmission is not possible is transmitted to the plurality of mobile wireless telephones in the service area via the wireless line to notify the plurality of mobile wireless telephones simultaneously. Notifying means, wherein each of the plurality of mobile radiotelephones detects the control signal via the wireless line when a call is not in progress, and the control signal is detected by the second detecting means. When detecting And an informing means for informing the serial transmission are not allowed.

[0009] Mobile radio telephone system of the present invention includes a base station that connects to multiple communication lines, the portable radio telephone system comprising a plurality of portable radio telephone within that connect via a wireless line to the base station And a plurality of control signals and a plurality of communication signals with the plurality of mobile radio telephones on a control channel and a plurality of communication channels of the wireless line via an antenna, and a line interface unit for interfacing with the plurality of communication lines. And a storage unit for storing the use and connection status of the plurality of communication lines and the plurality of communication channels, and the plurality of communication lines and the plurality of calls from the line interface unit and the wireless unit. The use state and connection state of the channel are detected and stored in the storage unit, and all of the plurality of communication lines and communication channels are used. And a first control unit for controlling the radio unit to send a control signal indicating that transmission is impossible via the control channel to the plurality of wireless telephones within the service area and to notify them all at once, and Each of the portable radio telephones receives the plurality of control signals and the call signal from the base station via the radio line and demodulates the received signal, an LED for notifying the transmission impossible by light, and the transmission An LCD for displaying a message indicating that the transmission is impossible, and a second control unit for controlling the LED and the LCD when detecting that the signal is a control signal indicating that transmission is impossible from a signal received and demodulated by the reception unit. I have.

[0010]

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

FIG. 1 is a block diagram showing a PHS system according to an embodiment of the present invention, FIG. 2 is a block diagram showing a base station (master unit) in the present embodiment, and FIG. 3 is a portable radio in the present embodiment. It is a block diagram which shows a telephone (PH: slave).

[0012] In FIG. 1, PHS system of this embodiment, the base stations connected to multiple communication lines (base unit) 1
And mobile radio telephones (PH: slave units) 2-1 to 2-4, each of which has an LED 26 and can be connected to the base station 1 and a control channel 4 of a radio line and a plurality of call channels 5.

In FIG. 2, a base station (master unit) 1 according to the present embodiment includes a line interface unit 11 for interfacing with a plurality of communication lines 3, a radio channel control channel 4 and a plurality of communication channels 4 via an antenna 13. A radio unit 12 for transmitting and receiving PHs (slaves) 2-1 to 2-4 to and from a plurality of control signals and a plurality of communication signals;
Storage unit 14 storing the use, connection status, and termination of
And a control unit 15 for controlling the entire base station (parent device) 1.

Referring to FIG. 3, PH in the present embodiment
Each of the (child units) 2-1 to 2-4 (representative is 2) is a receiving unit 22 and a transmitting unit that transmit and receive a call signal and a control signal to and from the base station (parent device) 1 via the antenna 21. 23
A speaker 28 for notifying an incoming call, a keypad (button) 27 for inputting a telephone number or the like at the time of calling, an LED 26 for notifying that calling is impossible with light, an LCD 25 for displaying calling impossible with text display, PH ( And a control unit 24 for controlling the entire slave unit 2.

Next, the operation of the present embodiment will be described with reference to FIG. 1, FIG. 2 and FIG. PH (child unit) 2
-1 to 2-4 are within the range of the base station (master unit) 1 and
It is assumed that (slave units) 2-1 to 2-3 are connected to the communication line 3 via the base station (master unit) 1 and are in a call.

The control unit 15 of the base station (master unit) 1 stores the current connection state between the communication line 3 and the PHs (slave units) 2-1 to 2-3 in the storage unit 14. When the control unit 14 recognizes from the storage content of the storage unit 14 that all the communication lines 3 are in use, the control unit 14 communicates with the entire PH (child device) 2 within the range of the base station (master device) 1. To notify a busy control signal indicating that all the lines 3 are in use, the BC of the control channel 4
Using the CH or the USCCH, a broadcast of a busy control signal is performed.

Currently unused PH in a standby state
In the (child unit) 2-4, the control channel from the base station (parent unit) 1
4 through the antenna 21 to receive the control signal
2 is demodulated and sent to the control unit 24.

The control section 24 analyzes the received data and detects that the received data is a busy control signal.
25, and the LED is blinked to notify the user that the call cannot be made.

As described above, in this embodiment, when the PH (slave unit) 2 is in a state where transmission is impossible even within the range of the base station (base unit) 1, the information is transmitted from the base station (base unit) 1 to the base station (base unit) 1. By transmitting, it is possible to ensure that the PH (slave unit) 2 in the area is transmitted.

For this reason, the user of the PH (slave unit) 2 thinks that he / she can make a call within the service area, but he / she can know beforehand that the call cannot be made even within the service area.
The meaningless outgoing call operation can be stopped.

[0021]

The present invention described above, according to the present invention includes a base station that connects to multiple communication lines, cellular radiotelephone comprising a plurality of portable radio telephone within that connect via a wireless line to the base station In the system, when all of the plurality of communication lines are in use, the base station sends a control signal indicating that all of the plurality of communication lines are in use to the plurality of portable radio telephones within the service area, and Notification of call disallowance to other mobile radio telephones allows the user of the mobile radio telephone to know in advance that a connection cannot be established even if a call is made even within the service area, thereby eliminating unnecessary call operation. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing a PHS system according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a base station (master) according to the present embodiment.

FIG. 3 shows a portable wireless telephone (PH:
FIG.

FIG. 4 is a block diagram showing an example of a conventional portable radio telephone system.

[Explanation of symbols]

 Reference Signs List 1 base station (base unit) 2, 2-1 to 2-4 portable radio telephone (PH: slave unit) 3 communication line 4 control channel 5 communication channel 11 line interface 12 radio unit 13 antenna 14 storage unit 15 control unit 21 antenna Reference Signs 22 receiving unit 23 transmitting unit 24 control unit 25 LCD 26, 26-1 to 26-4 LED 27 keypad (button) 28 speaker

Claims (5)

(57) [Claims] And 1. A base station that connects to multiple communication lines, the portable radio telephone system comprising a plurality of portable radio telephone within that connect via a wireless line to the base station,
When all of the plurality of communication lines are in use, the base station sends a control signal indicating that all of the plurality of communication lines are in use to the plurality of portable wireless telephones in the service area, A portable radio telephone system in which the portable radio telephone not in a call is notified that calling is not possible. 2. A base station that connects to multiple communication lines, the portable radio telephone system comprising a plurality of portable radio telephone within that connect via a wireless line to the base station,
The base station detects that all of the plurality of communication lines are in use, and that the first detection means detects that all of the plurality of communication lines are in use. Upon detection, a notification is sent to the plurality of portable wireless telephones in the service area, indicating that all of the plurality of communication lines are in use and transmission is not possible via the wireless line, and the notification is performed simultaneously. And a portable wireless telephone system. 3. A second detecting means for detecting the control signal via the wireless line when each of the plurality of portable radio telephones is not in a call, and detecting the control signal with the second detecting means. 3. The portable radio telephone system according to claim 2, further comprising: a notifying unit for notifying the outgoing call. 4. A base station that connects to multiple communication lines, the portable radio telephone system comprising a plurality of portable radio telephone within that connect via a wireless line to the base station,
The base station includes a line interface unit that interfaces with the plurality of communication lines, and a plurality of control signals and a plurality of communication signals with the plurality of mobile wireless telephones on a control channel and a plurality of communication channels of the wireless line via an antenna. A wireless unit that performs transmission and reception, a storage unit that stores the use of the plurality of communication lines and the use of the plurality of communication channels, a connection state and termination, and the plurality of communication lines and the plurality of communication lines from the line interface unit and the wireless unit. The use state and the connection state of the communication channel are detected and stored in the storage unit, and when the plurality of communication lines and the communication channels are all in use, a control signal indicating that transmission is impossible via the control channel is performed within the service area. A first control unit for controlling the radio unit so as to send the notification to the plurality of radio telephones and notify them all at once. Phone system. 5. A receiving unit for receiving and demodulating the plurality of control signals and the call signal from the base station via the wireless line, respectively, the plurality of portable wireless telephones, and using a light to determine whether the outgoing call is possible. An LED for notifying, an LCD for displaying characters indicating that transmission is not possible, and a second controlling the LEDs and the LCD when detecting that the signal is a control signal for disabling transmission from a signal received and demodulated by the receiving unit. The portable radio telephone system according to claim 4, further comprising a control unit.