JPS622726A - Transmission system for emergency call signal - Google Patents

Abstract

PURPOSE:To secure the proper treatment and countermeasure for quick recovery and also to eliminate the anxiety of the operator of mobile station, by grasping the automobile number of the mobile station in an emergency state and the emergency situation through a base station. CONSTITUTION:When the emergency situation is occurred at the mobile station the signals sent from an emergency call operating input terminal 7 are supplied to an emergency call signal transmitting part 6 and an emergency call control part 10. The part 10 receives the signal from the part 6 and sends it to a control part 5 for transmission of the signal to a base station. At the same time, the signals sent from the part 6 are cut off after a fixed time by the control of a timer. The sound signals supplied from a sound collecting mike connection terminal 11 is sent to the part 5 and modulated by a transmitter 4. The modulated sound signal is sent to the base station from an antenna 1 through an antenna switching part 2. While the input of the sound signals from the terminal 11 is cut off after a fixed time and the signals are sent to the part 5 from the part 6. Hereafter the emergency call signals and the sound signals delivered from the sound collecting mike are sent alternately to the base station under the control of a timer until the normal state is recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an improvement in an emergency call signal sending method in a mobile station in a mobile radio communication system.

(Prior art and its problems) Figure 2 is a block diagram of a mobile station device showing an example of a conventionally used emergency call system, in which 1 is an antenna, 2 is an antenna switching unit, 3 is a receiver, and 4 is a transmitter, 5 is a control unit,
6 is an emergency call signal sending unit.

7 is an emergency call operation input terminal, 8 is a reception output connection terminal, 9
is the modulation human power connection terminal.

Next, this operation will be explained. Radio waves from the base station are transmitted through the antenna 1. The antenna switching unit 2 is passed through to the receiver 3 for reception, and the demodulated reception output is sent to the control unit 5.

It is output as an audio signal from the reception output connection terminal 8.

- For transmission from the mobile station, the audio input from the modulation input connection terminal 9 is modulated by the transmitter 4 through the control unit 5, and the antenna switching unit 2. It is transmitted to the base station by antenna 1. In addition, when an emergency situation occurs, the emergency call signal sending section 6 sends an emergency call signal from the control section 5 to the transmitter 4 in response to the input from the emergency call operation input terminal 7, and transmits the emergency call signal from the control section 5 to the transmitter 4. All signals are transmitted continuously or intermittently to the base station through the antenna 1. In this type of system, the base station side can determine the car number etc. of a mobile station in an emergency state, but since it is not possible to determine the situation, the situation inside the car cannot be known until the support vehicle arrives. There were inconveniences such as delays in taking measures for recovery.

(the purpose) The present invention is directed from a mobile station in an emergency state to a base station.

The feature is that the emergency call signal and the audio signal from the sound collection microphone are transmitted alternately by timer control.

The purpose of this is to allow the base station to know the state of the mobile station in an emergency state, thereby enabling faster response and reliable response for recovery.

(Embodiment) FIG. 1 is a block diagram of a mobile station showing an embodiment of the present invention. The same parts as in FIG. be. Next, this operation will be explained. Transmission and reception operations with the base station during normal times are the same as in the example shown in FIG. 2, so the description thereof will be omitted, and the details of the emergency call operation according to this embodiment will be explained below.

When an emergency situation occurs in the mobile station, a signal from the emergency call operation input terminal 7 is transmitted to the emergency call signal transmitter 6. and is input to the emergency discharge control section 10. Emergency call control unit 10
When receiving the signal from the emergency call signal transmitting section 6, it sends it to the control section 5 and transmits it to the base station,
After a certain period of time has elapsed under timer control, the signal from the emergency call signal sending section 6 is cut off, the audio signal from the sound collection microphone connection terminal 11 is sent to the control section 5, modulated by the transmitter 4, and the antenna switching section 2 is switched off. The signal is sent from the antenna 1 to the base station through the antenna 1.

In addition, after a certain period of time has elapsed, all audio signals are input from the sound collection microphone connection terminal 11, and the signal from the emergency call signal transmitting section 6 is sent to the control section 5. Audio signals from the sound microphones are alternately sent to the base station under timer control.

(Effects) As explained above, according to the present invention, the base station can quickly recover by taking appropriate measures and countermeasures by grasping the car number of the mobile station in the emergency state and the emergency situation.
Furthermore, the anxiety of mobile station operators can be alleviated.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a mobile station emergency call signal sending system according to an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of a mobile station in a conventional emergency call system. 1: Aerial line, 2: Aerial scarlet switching section, 3: Receiver. 4: Transmitter, 5: Control section, 6: Emergency call signal sending section, 7
: Emergency call operation input terminal, 8: Reception output connection terminal, 9:
Modulation input connection terminal, 1o: emergency call control section, 11: sound collection microphone connection terminal. First place

Claims (1)

[Claims] In a mobile radio communication system consisting of a base station and a mobile station, the mobile station sends an emergency call signal to the base station when an emergency situation occurs, and also collects the state inside the mobile station vehicle using a sound collecting microphone. This emergency call signal transmission method is characterized in that the collected sound signal and the emergency call signal are automatically and alternately transmitted under timer control, and the status of the mobile station in an emergency state is displayed on the base station side.