JPS6026332B2 - Incoming call display method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display system in a car telephone system when a mobile subscriber receives a call during a call.

The secondary car telephone system is shown in Figure 1, where 1 is a car telephone switching center, 2 is a car phone radio line control station, and 3 is a car telephone switching center.
is a wireless base station, 4 is a mobile station, 5 is a fixed telephone A, 6 is a fixed telephone B, 7 is a mobile telephone exchange 1 and a radio line control station 2.
8 is a data line between the radio network control station 2 and the radio base station 3, 9 is a communication line, 10 is a radio base station antenna, 11 is a mobile station antenna, and 12 is a communication channel.

In Fig. 1, when landline telephone A 5 and mobile station 4 are talking, if a call is received from landline telephone B 6 to mobile station 4, the current system does not call landline telephone B 6. Midrange sounds are sent out. Therefore, in the case of an emergency, the call receiving (calling) operation will be performed many times, and it will take a lot of effort and time until the call can be made, which has the drawback of increasing invalid traffic. In order to eliminate these inconveniences, the present invention has a function that, when a mobile subscriber who is on a call receives an incoming call, displays an incoming call on the mobile terminal where the call is being made, without the need for the caller to make an emergency call many times. The dialed number of the caller,
This provides an incoming call display method that displays the degree of urgency, etc., and allows the subscriber who is currently on a call to connect to the caller displayed on the terminal by performing a call operation after the call ends. be. The present invention will be explained in detail below.

When receiving a call to a mobile subscriber, if the mobile subscriber's number is required and the call is urgent, the call is made by adding a dial as shown in FIG. 2, for example.

At the mobile phone exchange 1, when a mobile subscriber receives a call,
Sends a signal to the calling terminal requesting the terminal's phone number,
Receive the telephone number of the calling terminal. The mobile telephone switching center 1 determines whether or not the corresponding mobile station is busy based on the contents of the memory corresponding to the mobile subscriber, and if the mobile station is not busy, the mobile station is connected to the mobile station according to the mobile call termination connection sequence. If the corresponding mobile station is judged to be busy, the car telephone exchange 1
is a digital signal via the data line T, and as an example, the third
The caller's dial number and the presence or absence of an emergency are transmitted to the radio network control station 2 in a predetermined signal format shown in the figure. Figure 3 1
3 is a start signal, 14 is a control signal, 15 is a caller's dialed number signal, and 16 is a signal indicating the presence or absence of an emergency; "1" indicates an emergency, and "0" indicates only an incoming call. Further, 17 is a stop signal. Radio line control station 2
Then, the information from the switching center 1 is added with the channel information in progress and transmitted to the radio base station 3 via the data line 8. For example, the wireless base station 3 temporarily suspends the call on the channel in progress and transmits information indicating whether the caller is in an emergency and the caller's telephone number to the mobile station 4 in an extremely short period of time. After the transmission is completed, the device returns to the talking state. This period lasts for several hundred milliseconds and has almost no effect on the call. Figure 4 is a configuration diagram of the mobile station.
18 is an antenna, 19 is a transmitting/receiving wave duplexer, 2 channels is a received wave amplifying section, 21 is a receiving section, 22 is a transmitting wave amplifying section, 23 is a transmitting section, 24 is a local oscillator for transmitting and receiving, 25 is a control section, 26
27 is a data line between the control unit 25 and the terminal 26, and 28 is an audio signal line.

The mobile station 4 transmits the caller's dial number and emergency information received on the call channel to the terminal 2 via the data line 27.
6.

In the terminal 26, the dial number of the received caller is displayed on a display section 29 as shown in FIG. 5, and the presence or absence of an incoming call is also displayed so that the called party can know. In addition, in case of an emergency, the caller's dial number will be flashed and the emergency number will be displayed.
Inform the called party of the presence of an emergency. After the call is over, the called party presses a call function button, for example, and the displayed dial number is sent out by a well-known automatic dialing function (not shown), and the caller is connected to the caller. Figure 5 2
Reference numeral 9 indicates a dial number display section, 30 indicates a caller's dial number, 31 indicates whether a call has been received, 32 indicates a function button for calling and ending a call, and 33 indicates a dial button. As explained in detail above, when a mobile subscriber receives an urgent call during a call, the present invention allows the dialed number of the caller and the urgency of the call to be displayed on the subscriber terminal during the call. This allows the mobile subscriber to connect to the caller in a short time after the call ends.

Furthermore, in the conventional case where only the mid-word sound is used, subscribers who receive the mid-word sound will have to call again more frequently, and in car phones with few wireless channels, invalid traffic and invalid use of wireless channels will occur, but the present invention This has the advantage of being able to effectively prevent these problems.

Furthermore, it is safe and convenient because it can be used in cases where activities other than driving are restricted, such as when using a car phone, to notify the driver of an emergency call without any action such as hook-on.

[Brief explanation of the drawing]

Fig. 1 is a connection system diagram of a car telephone, Fig. 2 is a signal diagram showing an example of an emergency call and non-emergency call dial for a calling subscriber;
Figure 3 is a signal diagram showing an example of a signal format between a mobile phone switching center and a mobile phone radio line control station, Figure 4 is a block diagram showing a configuration example of a mobile phone station, and Figure 5 is a mobile station. FIG. 2 is a component arrangement diagram showing an example of the structure of a terminal device. 1...Car telephone switching center, 2...Car phone radio line control station, 3...Radio base station, 4...Mobile station, 5...・・・・Landline phone A, 6・
...Fixed telephone B, 7...Data line, 8...
...Data line, 9...Telephone line, 10...
Radio base, 11...Mobile station antenna, 12...
Call channel, 13...Start signal, 14.
...Control signal, 15...Dial number signal,
16...Emergency presence signal, 17...Stop signal, 18...Antenna, 19...Transmit/receive wave duplexer, 20...Receive wave amplification section , 21...
... Receiving section, 22... Transmission wave amplification section, 23...
...Transmission unit, 24... Local oscillator for transmission and reception, 25... Control unit, 26... Terminal unit, 27... Data line, 28... ...Audio signal, 2
9...Display section, 30...Dial number of caller, 31...Display of incoming call, 32...Function button, 33...Dial button. Age 1 figure Ice 24 years old 5 figure O 4 figure *5 figure

Claims (1)

[Claims] 1. When making a call, the caller adds information indicating the presence or absence of an emergency to the mobile subscriber's telephone number and sends it to the exchange,
The exchange causes the calling terminal to send the telephone number of the terminal,
When the mobile subscriber's terminal is busy, the caller's telephone number and information indicating the presence or absence of an emergency are sent to the radio base station via the radio circuit control station, and the radio base station terminates the call. The information indicating the presence or absence of an emergency of the caller and the telephone number of the caller are sent to the mobile station, and the mobile station displays the information indicating the presence or absence of an emergency and the telephone number of the caller on a display means on the terminal. A call waiting system is characterized in that it is configured as follows.