JPS60213136A - Base station radio equipment adopting avm system - Google Patents

Abstract

PURPOSE:To call a base station equipment from a mobile station equipment side even if transmission system in the base station equipment is talking by storing a registration request signal and reading out said signal after the end of transmission. CONSTITUTION:When the transmission system is in talking status, a talking detecting circuit 23 detects the talking status, a switch circuit 25 is connected to a voice side under control by a controller 24 and registration request signals in respective mobile station equipment which are received during the talking period are successively stored in a storage device 18. At the end of the talking status through a microphone, the controller 24 reads out the registration request signals successively from the storage device 18 on the basis of an output from the talking detecting circuit 23. These read-out registration request signals are converted into registration acknowledge signals by an encoder 28 and returned to respectively corresponding mobile station devices through the switch circuit 25.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention is directed to an AVM ( Automatic
The present invention relates to a base station wireless device to which a Vehicle Monitoring (c) method is applied.

[Prior art]

Conventionally, one of these types of AVM methods is called the voluntary calling method, in which a mobile station installed in a taxi etc. can report and register the status of its own vehicle to a central control room upon request. method has been adopted.

When the vehicle's registration signal is sent by the operator on the mobile station side, the base station receiver receives the registration signal and stores it in the storage device, and also sends the registration approval signal to the mobile station. This is a system that sends it back to the destination. According to this system, the mobile station receives a registration approval signal from the base station.

If you know that your car is registered and wait.

On the base station side, if necessary, requests for vehicle dispatch, 2 customer requests, etc. are recorded, and suitable information is checked from a storage device, and a transfer command can be received based on the results.

However, in this AVM method, if the transmitter of the base station device is transmitting, even if it receives a registration request signal from the mobile station device, the base station device is in a conversation state with another mobile station. A registration approval signal can be sent back. For this reason, during such a period, registration requests from mobile stations are generally not accepted. In other words, a registration request from a mobile station is valid only during a period when the base station is not making a call. therefore,
The mobile station always pays attention to whether or not the base station is transmitting.
This results in an increase in the load on the two passengers because they have to operate the mobile station equipment during the period when the transmission is paused. In addition, if the mobile station crew sends out a registration request signal even though the base station equipment is in the transmitting period, the registration approval will come back and there is a possibility that the mobile station will make repeated calls. Unfortunately, the system as a whole had a management drawback in that it resulted in a lot of unnecessary calling operations.

[Purpose of the invention]

An object of the present invention is to eliminate the above-mentioned conventional drawbacks, and to enable a mobile station device to send a registration request signal by making a call, regardless of whether the transmission system of the base station device is busy. , the base station device temporarily stores this in the storage device, and if the base station device is in the transmission period at this point, after the transmission ends,
Automatically sends registration approval signals one after another in a short period of time,
An object of the present invention is to provide a base station wireless device using an AVM method that can immediately return a registration approval signal during a no-call period.

[Structure of the invention]

The present invention uses two-frequency half-duplex communication! In a base station wireless device that applies the llAvM method, when a registration request signal in an arbitrary calling format is received from each of a plurality of mobile station devices, if the transmitter is transmitting, these received registration request signals and means for decoding and storing the registration request signals transmitted from the one or more mobile station devices stored in the storage means after the end of the transmission by the transmitter; The present invention is characterized in that it is provided with means for encoding the corresponding registration approval signal and sequentially and continuously transmitting it in a short period of time.

[Embodiments of the invention]

Next, two embodiments of base station radio equipment according to the present invention will be described with reference to one drawing.

FIG. 1 is a block diagram showing the configuration of a base station device as an embodiment of the present invention.

As seen in the figure, since the receiver system 1 and the transmitter system 2 operate in different two-frequency half-duplex systems, main reception is possible during the transmission period.

The receiver system 1 is provided with an identification circuit 13 on the output side of the receiver 12 for identifying an audio signal and a registration request signal (consisting of codes).
If the received hexagonal signal is audio, switch circuit 1
4, the audio output of the receiver is applied to the audio amplification circuit 15, and the speaker 16 is sounded. If the received input is a registration request signal.

Depending on the way the identification circuit 13 identifies the code input,
The switching circuit 14 is connected to the decoder 17 side.

The received registration request signal is decoded by the decoder 17 into codes differentiated for each mobile station device and provided to the storage device 18.

On the other hand, in the transmitter system 2, a call detection circuit 23 is connected to the output side of the audio amplification circuit 22 for detecting the presence or absence of a call state based on the voice given from the microphone 21. On the side is the aforementioned storage device 18. Encoder 28. A controller 24 for controlling a switching circuit 25 and a transmitter 26 is connected. According to such a configuration.

When there is no call (mic is not used).

The registration request signal given to the storage device 18 is sent to the controller 24.
is read immediately upon each request under the control of

The signal is added to the encoder 28 and encoded into a registration approval signal differentiated for each mobile station device. encoded encoder 28
The output is automatically transmitted from the transmitting antenna 27 via the switching circuit 25 switched to the encoder side of the controller 24 on the front panel and the transmitter 26.

On the other hand, when the transmission system is in a talking state (using a microphone), the two-call detection circuit 23 detects this talking state, and the switching circuit 25 is connected to the audio side under the control of the controller 24. At the same time, registration request signals for each mobile station device received on the receiving side during this call period are stored one after another in the storage device 18. When the conversation state using the microphone ends, the controller 24 outputs the signal from the second conversation detection circuit 23.
reads out the above registration request signals one after another from the storage device 18. These registration request signals are read out.

It is converted into a registration approval signal by the encoder 28 and sent to the switching circuit 2.
5 to the respective corresponding mobile station devices.

FIG. 2 is a block diagram showing one configuration example of a mobile station device facing the base station device in the embodiment of FIG. 1. In this figure, receiver system 3 and transmitter system 4
It is operated by a two-frequency single signal power system via a transmitting/receiving antenna 5 and a transmitting/receiving switching circuit 6. Therefore, it is not possible to receive when transmitting, and conversely, it is not possible to transmit when receiving.

Now, when the operator wants to send a registration approval signal from the transmitting side of the mobile station device, the operator presses the code press button 45.

As a result, the controller 48 operates, the transmitter 49 is driven, and the transmission/reception switching circuit 6 is switched to the transmission side. Further, the registration request signal generating circuit 46 operates, and its output is switched from the switching circuit 47 to the transmitter-49.
is transmitted to the base station via. When the sending of this registration request signal is finished, the device immediately returns to the reception standby state.

In the next step, when a corresponding registration approval signal is sent from the base station device, it is received by the receiver 31 of the receiver system 3, and at the same time, the switchover circuit 33 is activated under the control of the voice and code identification circuit 32. The decoder 36 is switched to the decoder 36. Then, the received registration approval signal is decoded by a decoder 36 and then
It is displayed on the display 37.

Note that both the base station device and the mobile station device handle two types of signals: audio signals and encoded signals, and the switching of the circuits corresponding to these is performed by the signal detection circuit as described above. It is carried out in

In addition, the mobile station device is placed in a receiving state during normal operation.

Voice press button 44. Alternatively, it is switched to the transmitting state only when the code press button 45 is pressed.

FIG. 3 is a time chart for explaining the operation of the A'vM method according to the present invention. In this figure.

(a) shows the transmission and reception states on the side of a plurality of mobile station apparatuses, and (b) shows the transmission and reception states on the side of the base station apparatus, respectively, in one time series. Among these, A + B HC+ a + b seen in the transmitted signal in (a) and the received signal in (b)
*c, d, α, β, and γ are registration request signals (respectively) transmitted from different mobile station devices and received by the base station device.
symbol). On the contrary.

A' seen in the two-hakama transmission signal in (b) and the received signal in (,).

B' + C' * a', b'ge' 1
d'#α',β', and γ' represent registration approval signals (codes) transmitted from the base station apparatus corresponding to the plurality of mobile station apparatuses and received by the respective mobile station apparatuses. In addition.

A rectangular area in the figure indicates that an audio signal is being transmitted or received. According to this chart.

Registration request signals received by the base station device from each mobile station device while transmitting a call are accumulated in the base station device.

It will be understood that the registration approval signal is sent back after the end of the call.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, regardless of whether or not the transmission system of the base station device is busy,
It is efficient because it is possible to accept a registration request signal by calling from the mobile station device side.

Moreover, it is possible to reliably send the registration approval signal back to the mobile station device, which has a great effect on improving the service aspect and reliability of the system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a base station device as an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of the configuration of a mobile station device facing the base station device in the embodiment of FIG. FIG. 3 is a time chart for explaining the operation of method A2 according to the present invention. In the figure, 11.27 is an antenna, 12 is a receiver, 1
3 is an identification circuit, and 14.25 is a switching circuit. 15.22 is an audio amplification circuit, and 16 is a speaker. 17 is a decoder, 18 is a storage device, and 21 is a microphone. 23 is a call detection circuit, 24 is a controller, 26 is a transmitter (5) ()

Claims (1)

[Claims] 1. Means for decoding and storing the received registration request signals when the transmitter is transmitting when receiving registration request signals in an arbitrary calling format from each of the plurality of mobile station devices; After the transmission by the transmitter is completed, the registration request signals transmitted from the one or more mobile station apparatuses stored in the storage means are read out, and each of them is encoded into a corresponding registration approval signal. 1. A base station radio device applying an AVM method using two-frequency half-duplex communication, characterized by being provided with means for sequentially and continuously transmitting data in a short period of time.