JPS60213137A - Base station radio equipment adopting avm system - Google Patents

Abstract

PURPOSE:To send a registration request signal based upon a call from a mobile station equipment side even if a transmission system in a base station equipment is in talking by storing the registration request signal in an AVM system base station radio equipment. CONSTITUTION:A talking detecting signal 23 detects 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 devices which are received in the talking period are successively stored in a storage device 18. At the end of the talking status, the controller 24 reads out the registration request signals from the storages device 18 successively on the basis of an output from the talking detecting circuit 23 and an encoder 28 converts said read-out signals into corresponding registration acknowledge signals and returns the signals to respective mobile stations.

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 call method, in which a mobile station installed in a taxi or the like can report and register the status of its own vehicle to a central control room upon request. method is adopted.

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

If only they knew that their army was registered and were on standby.

The base station records vehicle dispatch 9 customer requests, etc. as necessary, searches for suitable information from a storage device, and receives instructions 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. Unable to send back registration approval signal. 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.
The mobile station equipment must be operated during the pause period of transmission, resulting in an increased load on the two occupants. Furthermore, if the mobile station crew sends out a registration request signal even though the base station is in the transmitting period, it is possible for the mobile station to make repeated calls even though the registration approval is returned. However, the system as a whole had a management drawback in that it resulted in a large number of unnecessary call 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 to send a registration request signal by calling, regardless of whether the transmission system of the base station is busy or not. The station device temporarily stores this information in its 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 provides a base station radio device that applies the J AVM method using two-frequency half-duplex, when receiving a registration request signal in an arbitrary calling format from each of a plurality of mobile station devices.
means for decoding and storing these received registration request signals when the transmitter is transmitting a call, and the one or more stations stored in the storage means after the transmitter finishes transmitting a call; reads the registration request signal sent from the mobile station device,
means for encoding these into corresponding registration approval signals, and transmitting a lock signal prior to sending out a series of registration approval signals encoded by the encoding means; and means for transmitting an unlock signal after transmitting the signal, and when the transmitter finishes transmitting a voice,
Before transmitting corresponding registration approval signals to the one or more mobile station devices, all of the plurality of mobile station devices are placed in a receiving state by sending the lock signal, and the series of registration approval signals is sent. When the lock release signal is completed, the transmission stop function of all the mobile station devices is released.

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiments of the Invention] Next, nine 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 are operated using different two-frequency half-duplex systems, reception is possible even 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 input signal received by is audio, switching 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.

By the output of the identification circuit 13 that has identified the code input,
The switching circuit 14 is switched 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. Lock signal/release signal generation circuit 29. A controller 24 for controlling a switching circuit 25 and a transmitter 26 is connected. According to such a configuration, a no-call state (
(in which the microphone is not used), the registration request signal given to the storage device 18 is immediately read out for each request under the control of the controller 24, is applied to the encoder 28, and is differentiated for each mobile station device. Encoded in the registration approval signal. The encoded output of the encoder 28 operates the lock signal/release signal generation circuit 29, and also outputs the encoder 28 to the controller 2 on the front panel.
4, the signal is automatically transmitted from the transmitting antenna 27 via the switching circuit 25 switched to the encoder side and the transmitter 26.

On the other hand, when the transmitting system is in a talking state (using a microphone), the 9 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 180. 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 and converts them into corresponding registration approval signals by the encoder 28. The encoded registration approval signal of the encoder 28 is given to the lock signal/release signal generation circuit 29, while
The control signal from the controller 24 drives the lock signal/release signal generating circuit 29, and generates a lock signal to stop the operation of the transmitters of all mobile station devices prior to sending out the registration approval signal given to it. Send out. A series of registration approval signals are then sent. When the transmission of these registration approval signals is completed, a lock release signal for unlocking the transmitters of all mobile station devices is sent under the control of the controller 24 as well. As described above, the lock signal, the series of registration approval signals, and the lock release signal sent from the lock signal/release signal generation circuit 29 are controlled by the controller 24 in time, and the lock signal, the series of registration approval signals, and the lock release signal are sent out at the end of the two-call state. At the same time, the switching circuit 25 connected to the lock signal/release signal generation circuit 29 side on the front plate
The signals are then sent back from the antenna 27 via the transmitter 26 to the respective opposing mobile stations.

FIG. 2 is a block diagram showing one example of the configuration 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
is operated by a two-frequency simplex 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 request signal from the transmitting side of the mobile station device, the operator presses the code press button 45.

As a result, the control switch 4S turns on, the transmitter 49 is driven, and the transmission/reception switching circuit 6 is switched to the transmission side.

Furthermore, the registration request signal generation 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, a lock signal is sent from the base station device prior to the registration approval signal, so all mobile station devices are forcibly held in the receiving state. Therefore, the registration approval signal sent following this lock signal is ready to be received by all mobile station devices, but only the mobile station devices that issued the registration request have their identification circuits. The decoder 36 receives the corresponding registration approval signal given through the switching circuit 33 which is switched by the front panel under the control of the decoder 32.
Decrypt it accordingly. This decoded output is then displayed on the display 37. When the reception of a series of registration approval signals is completed, a lock signal release signal is sent from the base station apparatus, so that all mobile station apparatuses return to a transmittable state. To lock and unlock the transmitter 49, the lock signal/-18 or unlock signal received by the receiver 31 is detected by the lock signal/release signal detection circuit 38, and its output is sent to the transmitter system 40 controller 48. This is done by giving.

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 times.

Audio Presbytan 44. Alternatively, the transmitting state can be switched only when the code press button 45 is pressed.

FIG. 3 is a time chart for explaining the operation of the AVM system according to the present invention. In this figure.

(a) shows the transmission status of a plurality of mobile station devices and the reception status of a base station device on a one-time axis.

This hour + A r B r Cr a r b r
e + Er F re, f, g, and h are registration request signals (codes) transmitted from a plurality of mobile station devices, respectively.
At the same time, it also represents a reception registration request signal at the base station device. Of course, strictly speaking, there is a time delay between transmission and reception, but since there is essentially no problem, it is assumed that there is no time delay. (b) of the figure shows the transmission state on the base station device side, and (C) shows the reception state of a plurality of mobile station devices in the same chronological order as in Fig. (a). A'l seen as the transmitted signal in this figure (b) and the received signal in (C)
B'I C'l a'+ b'+ ”+ EZ F'
1et, (t, gr, and h' represent registration approval signals (codes) that are transmitted from the base station apparatus corresponding to the plurality of mobile station apparatuses and received by the respective mobile station apparatuses. The signal voice signal in FIG. 1(b) indicates that a call is in progress.

According to this chart, registration request signals received by the base station device from multiple mobile station devices during a call are accumulated in the base station device and sent back as a registration approval signal after one call ends. It will be seen that by sending the lock signal and the lock release signal to all mobile stations, reception of the registration approval signal on the mobile station device side is ensured.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the base station device can
Since it is possible to receive a registration request signal by a call from the mobile station device, and the mobile station device is always in a receiving state to receive the returned registration approval signal, registration can be performed efficiently and extremely reliably. The approval signal can be sent back to the mobile station device, which has a significant effect on improving the service aspect and reliability of the system.

[Brief explanation of drawings]

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 the AVM system according to the present invention. In the figure, 11.27 is the anti-receiver, 12 is the receiver,
13 is an identification circuit; 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.

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 ends, means for reading registration request signals sent from the one or more mobile station devices stored in the storage means and encoding them into corresponding registration approval signals; , means for transmitting a lock signal prior to transmitting a series of registration approval signals encoded by the encoding means, and transmitting a lock release signal after transmitting the series of registration authorization signals. and, when the transmitter finishes transmitting a voice, before transmitting the corresponding registration approval signal to the one or more mobile station devices, all of the plurality of mobile station devices receive the lock signal by transmitting the lock signal. state, and when the series of registration approval signals has been sent, the lock release signal releases the transmission stop function of all the mobile station devices. A base station wireless device that applies the J AVM method.