JPH0464215B2 - - 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 a mobile radio system for monitoring the operation status of a large number of vehicles such as taxis in a central control room and streamlining operation management.
Regarding base station wireless equipment that applies the AVM (Automatic Vehicle Monitoring) method.

[Prior art]

Conventionally, one of these types of AVM methods has been a method called the voluntary call 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. has been done. When a vehicle's registration signal is sent by the operator on the mobile station side, the receiver of the base station device receives the registration signal, stores it in the storage device, and sends a registration approval signal to the mobile station. This is a system that sends it back to the destination. According to this system, if the mobile station receives a registration approval signal from the base station and is waiting knowing that its own vehicle has been registered, the base station will dispatch the vehicle as necessary, and It is possible to search for suitable information from a storage device that records requests, etc., and receive 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 were 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 side must always be aware of whether the base station side is transmitting or not, and operate the mobile station equipment while aiming for a period when transmission is suspended, which increases the load on the crew. It turns out. Furthermore, if the mobile station crew sends out a registration request signal even though the base station is in the transmitting period, registration approval will not be returned and there is a possibility that the mobile station will make repeated calls. 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 equipment temporarily stores this information in its storage device, and if the base station equipment is currently transmitting a call, it automatically sends out registration approval signals one after another in a short period of time after the transmission ends. However, it is an object of the present invention to provide a base station wireless device to which an AVM method is applied, which can immediately return a registration approval signal during a no-call period.

[Structure of the invention]

The present invention provides a base station wireless device that applies the AVM method using two-frequency half-duplex, when a registration request signal in an arbitrary calling format is received from each of a plurality of mobile station devices, and when a transmitter is transmitting. , a means for decoding and storing these received registration request signals, and a registration request signal sent from the one or more mobile station devices stored in the storage means after the transmission by the transmitter is completed. means for reading and 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; means for transmitting a lock release signal after transmitting the authorization signal, and when the transmission by the transmitter is completed, the lock signal is transmitted to the one or more mobile station devices before transmitting the corresponding registration authorization signal. When all of the plurality of mobile station apparatuses are put into a receiving state by sending the above, and the series of registration approval signals has been sent, the transmission stop function of all the mobile station apparatuses is canceled by the lock release signal. .

[Embodiments of the invention]

Next, embodiments of a base station wireless device according to the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a base station apparatus 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 that identifies the audio signal and the registration request signal (consisting of codes), and the identification circuit 13 identifies the voice signal and the registration request signal (consisting of codes). When the input signal is audio, the switching circuit 14 is controlled to add the audio output of the receiver to the audio amplification circuit 15 and the speaker 1
Ring 6. If the received input is a registration request signal,
The switching circuit 14 is switched to the decoder 17 side by the output of the identification circuit 13 that has identified the code input, and the received registration request signal is decoded by the decoder 17 into a code differentiated for each mobile station device. 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. A controller 24 for controlling the aforementioned storage device 18, encoder 28, lock signal/release signal generating circuit 29, switching circuit 25 and transmitter 26 is connected to the side. According to such a configuration, in a no-call state (microphone is not used), the storage device 1
The registration request signal given to the encoder 28 is immediately read out for each request under the control of the controller 24.
, and is encoded into a registration approval signal differentiated for each mobile station device. coded encoder 2
The output of 8 is the lock signal/release signal generation circuit 29.
The signal is automatically transmitted from the transmitting antenna 27 via the transmitter 26 and the switching circuit 25 which was previously switched to the encoder side by the controller 24 without operating the encoder.

On the other hand, the transmitting system is in a call state (microphone is used)
, the call detection circuit 23 detects this call state, and the switching circuit 25 is connected to the voice side under the control of the controller 24, and at the same time, the call detection circuit 23 detects this call state, and the switching circuit 25 is connected to the voice side under the control of the controller 24. Registration request signals for each mobile station device are stored in the storage device 18 one after another. When the conversation using the microphone ends, the controller 24 is activated by the output of the voice detection circuit 23.
reads out the above-mentioned registration request signals one after another from the storage device 18, and is converted by the encoder 28 into corresponding registration approval signals. The encoded registration approval signal from the encoder 28 is applied to the lock signal/release signal generation circuit 29, while the lock signal/release signal generation circuit 29 is driven by a control signal from the controller 24 and is applied to the lock signal/release signal generation circuit 29. Prior to sending the registration approval signal, a lock signal is sent to stop the operation of the transmitters of all mobile station devices. 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 mentioned 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 temporally controlled by the controller 24, and the lock signal, the series of registration approval signals, and the lock release signal are sent out at the end of the call state. The antenna 27 is then connected via the switching circuit 25 and the transmitter 26 connected to the lock signal/release signal generation circuit 29 side.
The signals are then sent back to each opposing mobile station.

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, a receiver system 3 and a transmitter system 4 are 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 controller 48 operates, 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 transmitted from a switching circuit 47 that has been switched in advance to the base station via the transmitter 49. 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 series of mobile station devices that have issued the registration request are controlled by the identification circuit 32. The decoder 3 receives the respective corresponding registration approval signals provided via the switching circuit 33, which has been previously switched by the decoder 3.
6. 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, a lock signal or a lock release signal received by the receiver 31 is detected by a lock signal/release signal detection circuit 38, and its output is provided to the controller 48 of the transmitter system 4. It is done by

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
Further, the mobile station device is normally placed in a receiving state, and is switched to a transmitting state only when the voice press button 44 or the code press button 45 is pressed.

FIG. 3 is a time chart for explaining the operation of the AVM method according to the present invention. In this figure, a represents the state of transmission on the device side and reception on the base station device side of a plurality of mobile stations on a one-time axis. Among these, A, B, C, a, b, c,
E, F, e, f, g, and h are registration request signals (codes) transmitted from a plurality of mobile station devices, and also represent registration request signals received by 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 shown that there is no time delay. In the figure, b shows the transmission state at the base station device side, and c shows the reception state at the plurality of mobile station devices, respectively, in the same time series as in Fig. a. A', B', C', a', b', c', which can be seen as the transmitted signal in figure b and the received signal in c,
E′, F′, e′, f′, g′ and h′ are registration approval signals ( symbol). Further, the signal _L1 in Figure b represents a lock signal, and the signal _L2 represents an unlock signal, and the rectangular areas seen in Figures b and a indicate that a call is in progress in the voice signal. With this chart, registration request signals received from multiple mobile station devices by the base station device during a call are accumulated in the base station device, and are returned as a registration approval signal after the call ends. It will be seen that by sending the lock release 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, a base station device can accept a registration request signal from a mobile station device regardless of whether the transmitting system is busy or not. , and the mobile station device is always in a receiving state to receive the returned registration approval signal, so the registration approval signal can be sent back to the mobile station device efficiently and extremely reliably. The benefits of improving service quality and reliability are significant.

[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. Figure 3 is according to the present invention.
This is a time chart for explaining the operation of the AVM method. In the figure, 11 and 27 are antennas, 12 is a receiver, 13 is an identification circuit, 14 and 25 are switching circuits, and 1
5 and 22 are audio amplification circuits, 16 is a speaker, and 17
is a decoder, 18 is a storage device, 21 is a microphone, 23
is a call detection circuit, 24 is a controller, 26 is a transmitter,
28 is an encoder, and 29 is a lock signal/release signal generating circuit.

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 a plurality of mobile station devices; means for reading 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, and encoding them into corresponding registration approval signals; means for transmitting a lock signal prior to transmitting the series of registration approval signals encoded by the encoding means, and transmitting a lock release signal after transmitting the series of registration authorization signals; When the transmission is completed, all of the plurality of mobile station apparatuses are placed in a receiving state by sending the lock signal, and before sending the corresponding registration approval signal to the one or more mobile station apparatuses, and A base station wireless device applying an AVM method by two-frequency half-duplexing, characterized in that when the transmission of the registration approval signal is finished, the transmission stop function of all the mobile station devices is canceled by the lock release signal.