JPH04192817A - Base station radio equipment and mobile station radio equipment in avm system - Google Patents

Abstract

PURPOSE:To efficiently operate the system by constituting it so that plural mobile stations which execute a call in the course of speech are set simultaneously to a registration acknowledged state, and only the mobile station in which the call is generated simultaneously and cannot be decoded on a base station side therefrom resends out automatically a registration demand signal to the base station. CONSTITUTION:A receiver system 100 and a transmitter system 200 of a base station equipment are operated by a two frequency semi-duplex operation system using different frequencies, respectively. Even when the transmitting system 200 of the base station equipment is in the course of speech, a registration request signal by a call from plural mobile stations can be received. In such a state, after a speech is finished, the mobile station which execute a call by one piece of registration answer signal are set simultaneously to a registration acknowledged state, and also, only the mobile station in which the call is generated simultaneously and cannot be decoded on the base station side therefrom resends out automatically the registration request signal. In such a way, the system can be operated efficiently.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is intended to monitor the operation status of a large number of vehicles such as taxis in a central control room and streamline operation management.
AVM (Autosatic) in mobile radio systems
The present invention relates to a system using a base station wireless device and a mobile station wireless device that operate a vehicle, monitoring) system.

[Prior Art] Conventionally, as one of this type of AVM method, there is an arbitrary call method in which a mobile station device installed in a taxi or the like can report and register the status of its own vehicle to a central control room upon request. A method called ``is adopted.

In this method, when a vehicle registration request signal is sent by an operation by a passenger on the mobile station side, the receiver of the base station device receives the registration request signal and stores it in the storage device. This is a system that sends replies to the station. According to this system, if the mobile station receives a registration response signal from the base station and is on standby knowing that the registration of its own vehicle has been approved, it can receive a vehicle dispatch command from the base station. .

However, in this AVM system, if the transmitter of the base station device is transmitting, even if it receives a registration request signal from the mobile station device, it cannot send back a registration approval signal. For this reason, it was common practice to not accept registration requests from mobile stations during such periods. 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 always pays attention to whether or not the base station side is transmitting.

The operator must operate the mobile station equipment during the pause period, resulting in an increased burden on one crew member. In addition, if the mobile station crew sends out a registration request signal even though the base station is in the call period, registration approval will not be returned, and there is a possibility that the mobile station will make repeated calls.
The system as a whole had a management drawback in that it resulted in a lot of unnecessary calling operations.

In order to compensate for this drawback, it is possible to send a registration request signal by making a call from the mobile station device regardless of whether the transmission system of the base station device is busy, and the base station device side can send a registration request signal by making a call. Once stored in the storage device.

A system may also be considered in which, if the base station device is in a call period, the registration response signals from a plurality of stations accumulated during one call are automatically sent out after the call ends.

If two or more mobile station devices issue registration request signals at the same time, the base station device will be unable to decode them.

It is not possible to send response signals back to these mobile stations, and for this reason, the base station equipment sequentially sends registered response signals containing the radio vehicle numbers of all mobile stations decoded and stored during the call. There are disadvantages in that it takes one hour to send out the registration response signals, and that the base station is subject to call time restrictions during the sending of a series of registration response signals.

[Problems to be Solved by the Invention] An object of the present invention is to eliminate the above-mentioned conventional drawbacks, and to enable registration by calling from a mobile station device, regardless of whether the transmission system of the base station device is busy or not. It enables the sending of request signals, and if the base station device is in the middle of a call, after the end of the call, all the mobile stations that made a call during one call are set to the registration approval state, and one call from among them is set to the registration approval state. Mobile stations that occur at the same time and cannot be decoded on the base station side automatically resend registration request signals to the base station, thereby eliminating wasted waiting time and the anxiety of waiting for registration approval. Let it be resolved.

Base stations respond to useless inquiries from mobile stations.

A by preventing the mobile station from repeatedly making unnecessary calls.
An object of the present invention is to provide a base station radio device and a mobile station radio device that enable efficient operation of a VM system.

[Means for Solving the Problems] The present invention provides for a base station radio device to communicate with other mobile stations when responding between a base station radio device operating an AVM system using two-frequency half-duplex and a plurality of mobile station radio devices. Storage means for decoding and storing the registration request signal if the registration request signal can be decoded when a plurality of mobile station devices successively receive registration request signals in an arbitrary calling format during transmission for a telephone call;
If it is determined that decoding is impossible due to calls originating from multiple mobile stations at the same time, the time measurement means consisting of multiple units starting from that time each time and one nuclear base station device will When the plurality of time measurements are stopped and there are simultaneous calls from a plurality of mobile stations, one registration response signal containing the measurement time value information is generated and encoded, and the base station transmits the signal. means for transmitting a registration request signal to all mobile stations that have made a call during transmission for a call with the mobile station;
When the base station is on standby and receives a registration request signal, it generates a registration response signal, encodes it, and sends it out only if it can be decoded, and if it cannot be decoded due to simultaneous calls from multiple mobile stations. In this case, the method is characterized by comprising means for stopping transmission of the registration response signal.

It consists of base station radio equipment in the AVM system.

The present invention also includes: When the mobile station wireless device issues a registration request signal while the base station is on a call, time measurement is started from that time, and when the base station ends the call, the time measurement is stopped and a signal for retransmission is sent. means for randomly selecting one of a plurality of time slots, and when the time value information included in the registration response signal and the measured time value of the own vehicle match, automatically registering at the time of the time slot; means for retransmitting a request signal; when the mobile station issues a registration request signal while the base station is waiting for reception, one of the retransmission time slots is randomly selected; If a registration response signal cannot be received within a certain time after making a call, there is a means for automatically retransmitting a registration request signal at the time of the time slot, and even if this series of automatic resending operations is repeated a certain number of times, registration is not possible. If the approval state is not achieved, the mobile station radio equipment displays a registration failure indication, suspends automatic retransmission, and if a registration response signal is received within a certain period of time, the registration is approved. be done.

[Example] Next, an embodiment of 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.

A receiver system 100 and a transmitter system 200 shown in FIG.

Since it is operated using a two-frequency half-duplex system using different frequencies, reception is possible even during the transmission period. In the receiver system 100, an identification circuit 103 is provided on the output side of the receiver 102, and a receiving antenna 101.
If the signal received by the receiver 102 is an audio signal, it is connected to an audio amplifier 105 through a switching circuit 104 controlled by the identification circuit 103 to sound a speaker 106, and if the received signal is composed of codes. In the case of a registration request signal, the received signal is switched to the decoding determination circuit 107 side by the control output of the identification circuit 103.

The decoding determination circuit 107 is a circuit that determines whether the received registration request signal can be normally decoded.

If possible, it is decoded by the decoding circuit 108, and the car number 1 position and other information included in the registration request signal are stored in the storage device 109.
is memorized.

The storage control circuit 110 sets an address in the storage device 109 for storing the decoded signal, writes and reads the decoded signal to the storage device 109, and exchanges control with the main control circuit 204 of the transmitter system 200. This is a circuit that does this. According to the above procedure, among the registration request signals from a plurality of mobile stations received by the base station during a call, the signals of the mobile stations that are normally decoded are sequentially stored in the storage device 109. If multiple mobile stations issue registration request signals at the same time and the decoding determination circuit 107 of the base station that receives them determines that decoding is impossible, the multiple time counters in the one-hour measuring circuit 111 Start one. Timing control circuit 112
is a circuit that selects a counter to start, stops the counter, reads the contents of the counter, and exchanges control with the main control circuit 204, which will be described later, in the one-hour measuring circuit ill. If simultaneous calls from multiple mobile stations occur multiple times while the base station is talking, time measurement circuit 1
A plurality of counters in 11 are sequentially started.

On the other hand, in the transmitter system 200 , a call detection circuit 203 is connected to the output side of the audio amplification circuit 202 to detect the state of a voice call using the microphone 201 , and this detection signal is sent to the main control circuit 204 . If the microphone 201 is in a call period, the main control circuit 204 receives a signal from the one call detection circuit 203.

The switching circuit 205 connects one output of the audio amplifying circuit 202 to the transmitter 209 , simultaneously drives the transmitter 209 , and transmits the audio signal from the transmitting antenna 210 .

When the transmitter system 200 ends the voice call, the main control circuit 204 stops all the counters in the time measurement circuit 111 that are measuring time by the one-call detection circuit 203, and starts control for replying to the request. That is, the control output of the main control circuit 204 switches the switching circuit 205 to the output side of the encoding circuit 208 for a registration completion signal, which will be described later.

At the same time, the transmitter 209 is also activated so that it can send out a registration response signal consisting of a series of codes. Next, the main control circuit 204 opens the gate circuit 20f3(a) and registers the reception signal from the reception signal generation circuit 113.
Send to 7. Furthermore, if the registration request signal cannot be decoded and the counter of the 9-hour measurement circuit 111 is activated, the main control circuit 204 opens the gate circuit 206(b), and the time measurement control circuit 112 sequentially reads the count contents of the counter. The read time value signal generation circuit 114 sends the registration response signal generation circuit 207 as a series of time value information signals. The registration response signal generation circuit 207 is.

After converting these registration reception and a series of time value information into one registration response signal and encoding it in the encoding circuit 20B,
The transmitter 21 through the switching circuit 205 as a registration response signal.
Send to 0.

When the base station receives the registration request signal while on standby and the decoding determination circuit 107 determines that decoding is possible, the decoding circuit 108
The decoded data is temporarily stored in the storage device 109 by the storage control circuit 110, for example.

Thereafter, the main control circuit 204 switches the transmission switching circuit 205 to the encoding circuit 208 side, and the reception signal generation circuit 11
The registration acceptance signal from 3 is passed through a series of registration response signal generating means to send out a registration response signal. Also.

If registration request signals from multiple mobile stations are received at the same time and cannot be decoded, no registration response signal is sent and the mobile station returns to the standby state.

Note that the information on the registration request signal stored in the storage device 109 is transferred to the vehicle dispatch system of the base station and used for future vehicle dispatch operations.

FIG. 2 shows, in block form, the configuration of a mobile station radio device opposite to the base station radio device shown in FIG. 1, as an embodiment of the present invention.

Receiver system 300 in FIG. Transmitter system 400 is similar to transmitter system 200. in FIG. The mobile station registers while the base station is checking that the receiver 301 of the mobile station that constitutes the two-frequency half-duplex communication system that communicates on the frequency corresponding to each receiver system 100 is in communication on the base station side. When the button 401 is operated, the main control circuit 503 enters the base station call mode. In this mode, the main control circuit 50B switches the antenna switching circuit 502 to the transmitter 405 side,
5 into the transmission state, the registration request signal generation open circuit 403 is activated. The registration request signal, which is code information including the position, status, vehicle number code, request signal, etc. of the own vehicle, generated in the registration request signal generation circuit 403 is sent to the switching circuit 404. Send If
! Via 405.

The signal is transmitted from the antenna 501 toward the base station through the antenna switching circuit 502, which has been switched to the transmitting side in advance. Next, the main control circuit 503 is a time measurement circuit 408.
1, displays on the display device 506, for example, "Registration request in progress," switches the antenna switching circuit 502 to the receiver 301 side, puts the mobile station radio device in the receiving state, and receives a response from the base station. wait.

When the base station wireless device receives the registration request signal of the mobile station, it transmits a registration response signal after the call with the other mobile station ends, as explained in FIG. This signal is transmitted to antenna 501 of the mobile station radio device. The signal is input to the receiver Sol through the antenna switching circuit 502.

When the identification circuit 302 identifies that the receiver output signal is composed of codes, it switches the switching circuit 303 to 1.
The output signal is sent to the decoding circuit 304, and the counter of the time measuring circuit 406 is stopped via the main control circuit 503. Next, the retransmission time slot selection circuit 504 randomly selects one of the plurality of retransmission time slots, and changes the display of "registration requesting" on the 1 display circuit 506 to, for example, "
"Registration Approved". If the decoding circuit 304 decodes a code indicating that registration is not possible, that is, time value information, the time count values contained therein are sequentially read out, and the comparison circuit 305 compares them with the count value of the own vehicle's time measurement circuit 406. If the comparison is the same, it means that the registration request signal for the own vehicle was not received, so the retransmission control circuit 505 is activated at the time of the previously selected time slot, and the main control circuit 503
A control signal is sent to resend the registration request signal.

In response to this signal, the registration request signal is automatically re-sent in the same procedure as when the registration button 401 is pressed. At this time, the display device 506 indicates "registration approval" on -1
The display is also changed back to, for example, "registration request in progress."

Furthermore, if the registration button is operated while the base station is not busy, the main control circuit 503 enters the base station standby call operation mode. In this mode, the main control circuit 5
03 sends out a registration request signal similar to that described above, and at the same time, the retransmission time slot setting circuit 504 randomly selects one of the plurality of time slots and waits for a registration response signal from the base station. If a certain period of time is 1, for example, 0.
If there is no response from the base station within 5 seconds, the retransmission control circuit 505. automatically retransmits the registration request signal at the time of the 2 selected time slots. Main control circuit 503
is activated.

In addition, when automatic retransmission is repeated continuously in any mode, the retransmission control circuit 505 counts the number of repetitions, and if it is repeated a predetermined number of times, for example, three times, the registration becomes impossible for some reason. It is determined that there is, and the retransmission operation is interrupted and the display is changed to, for example, ``registration not possible.''

Furthermore, it is also possible to use means such as flashing lights to alert the crew. After a series of these operations, the main control circuit 503 puts its own station into a normal transmission/reception standby state.

In addition, if a normal registration response signal response cannot be obtained due to some kind of failure during these processes, a certain period of time (for example, 2
After approximately 0 seconds), a reset signal from the timeout control circuit 507 causes the main control circuit 503 to put its own station into a transmission/reception standby state.

Note 1: In the case of normal voice transmission, press the send button 402
By pressing , the main controller 503 switches the antenna switching circuit 502 to the transmitter 405 side to enter the transmitting state, and at the same time switches the switching circuit 404 to the output side of the audio amplifier 408 to switch from the microphone 407 to the audio amplifier 408. inputting the input audio signal to the transmitter 405;
When receiving an audio signal from the base station, the identification circuit 3
02, the switching circuit 303 is switched to the audio amplifier 306 side, and the audio signal is amplified and output from the speaker 307.

3 to 5 are time charts showing signal sequences to specifically explain the above series of operations. In FIG. 3, mobile stations M1 to M7 send registration request signals while the base station is talking. 4(a) and (b) are detailed time charts of the automatic retransmission part of the registration signal, and FIG. 5 shows the case where the mobile stations M1 to M3 register while the base station is on standby. 5 is a time chart showing an example of operation when a request signal is issued.

In FIG. 3, mobile station M1 is at time t1 when the base station is talking, and mobile stations M2 and M4 are at time t2.

At time t3, mobile station M3, and at time t4, mobile station M5.
M6. This is a case where the registration request signals RQI to RQ7 are issued by operating the registration buttons M7 and M7, and in each mobile station, the time counter TM of the time measurement circuit 406 and the timeout control circuit 507 are started at the respective call origination times. Although the base station is transmitting signals because it is talking to another mobile station (during the CM period in FIG. 3), it is possible to receive these registration request signals, and the processing described below is performed.

That is, at times t1 and t3, the decoding determination circuit 107 of the base station that received the 1 call signal confirms that decoding is possible, and the decoding circuit 108 decodes information such as the car number 1 location included in the registration request signal. is decoded and temporarily stored in the storage device 109. At time t2, since the registration request signals were simultaneously issued from mobile stations M2 and M4, the decoding determination circuit 1 of the 9 base stations
07 determines that normal decoding is impossible, and starts CTI, one of the plurality of time counters in the one hour measuring circuit 111. Also at time t4, mobile station M5. Since Me and 7 simultaneously issued the registration request signal, the other time counter C70 is started in the same manner as above. When the base station call ends at time L5.

The base station uses a time counter CTI in the time measurement circuit 111.
.

Stop C70 and check registration completion code and time counter CTI
.

The registration response signal C8 containing the time value information of C70 is encoded and sent. At this point, the base station's time counter CT
The count value of I is T2 (-t5-t2), and the count value of C70 is T4 (-t5-t4).

When the mobile station receives this registration response signal, the identification circuit 30
2 and decoded by the decoding circuit 304.

Among these mobile stations, the mobile stations that are in the state of requesting registration
M7 immediately stops its own time measurement counter and randomly selects one of the plurality of time slots in the retransmission time slot selection circuit 504.

For example, in FIG. 3, the selection circuit 504 for mobile station LM to penalty
The retransmission signals DTI to DT7 generated in the retransmission control circuit 505 according to the randomly selected time slot values are TS4, TS2, TS2, and TS7, respectively.
, T.S.I.

The case with slot values of TS5 and TSI is shown. Also.

The display device 506 displays "registration request in progress".

At this point, the count value of the time counter TM of the time measurement circuit 406 of each mobile station is T1(-t5-
tl), T2(-t5-t2) for M2 and M4
, T3 (-15-t3) for M3, M5. Me
and T4 (-t5-t4) for M7.

Each mobile station that has sent these registration requests subsequently decodes the time value information included in the registration completion signal C3 and compares it with the count value of the counter TM in the time measurement circuit 40B of the own station in the comparison circuit 305. In this example, mobile station Ml,
M3 is each count value Tl.

T3 and T2 and T sent as time value information
It is determined that the registration has been accepted because it does not match any of 4.
As shown in DTI, DT3 in FIG. 3, the time slot circuit 504. The retransmission control circuit 505 is reset and the 1 display circuit 506 changes from "requesting registration" to "approving registration". In mobile stations M2 and M4.

Since the count value T2 of the own vehicle and the time information T2 decoded by the decoding circuit 304 match, the retransmission signal DT2. The time slot time TS2.DT4 was selected first. When TS7 is reached, a signal is sent to the main control circuit 503 to automatically resend the registration request signal.

Mobile station M5. In Me and M7 as well, since the count value T4 of the own vehicle and the time value information T4 of the registration response signal sent from the base station match, the automatic retransmission of the registration request signal is waited for in the same procedure as described above.

Next, automatic retransmission of the registration request signal will be explained in detail with reference to FIG. FIG. 4(a) shows mobile station M2 in FIG.
The retransmission part of M4, FIG. 4(b) is the mobile station M5゜Me,
This is the details of the retransmission part of M7. As mentioned above, the mobile station decodes the registration completion signal C8 and sends it to the one-hour measurement circuit 40.
At the time when the time counter TM of 6 is stopped.

The main control circuit 503 is a retransmission time slot selection circuit 504
Activate. This selection circuit automatically selects a random value from a plurality of time slot values, for example eight, each time it is activated, and the retransmission control circuit 505 generates a retransmission signal DT having the time slot time of the selected value.

In the example of FIG. 4(a), retransmission signals DT2. The time slot values of DT4 are respectively TS3. Since it is TS7, when these time slot times come, the retransmission control circuit 5.5 confirms that the repetition counter in the control circuit is within a preset count value, for example, 3 times, and then resends the registration request signal. The main control circuit 503 is activated. Thereafter, the registration request signals RQ2'' and RQ4'' are automatically retransmitted in the same procedure as when the registration button 401 is pressed. The display circuit 506 continues to be in the "requesting registration" state.

As described above, the time slot value of each mobile station is randomly selected each time the retransmission time slot selection circuit 504 is activated. If the station happens to select the same slot value, or if the registration request signal overlaps with another new mobile station's registration request signal, the above automatic retransmission operation will be repeated. Figure 4(b)
Well then.

Mobile station M5. A case is shown in which the same time slot value is selected for M5 and M7 among Me and M7.

That is, in this example, retransmission signal DT5. The time slot values of DT7 are both TS2. The value of retransmission signal DT6 is TS
5, mobile stations M5 and M7 automatically retransmit registration request signals RQ5' to RQ7° at time slot time TS2 and 1M6 at slot time TS5. At this time, whether the request signals RQ5° and RQ7' of the mobile stations M5 and M7 overlap again? In the example shown in this figure, the base station is waiting for reception at the time of this retransmission, so the operation procedure detailed in FIG. , and then again at a randomly selected slot time, for example TS8. Registration request signal RQ5'' to TSI.

RQ7" automatic retransmission operation begins.

The repetition number counter in the retransmission control circuit 505 is as follows.

This is provided to avoid a situation where such repeated transmission continues indefinitely.

FIG. 5 shows that the mobile station presses the registration button 401 while the base station is on standby.
This is a detailed time chart when a registration request signal is issued by operating the mobile station M2.83 at time t1 and mobile station old 1 at time t2, as an example.

At time ti, the mobile station M1 presses the call button 401 and issues the registration request signal RQI using the procedure described above.

The base station decodes the registration request signal RQI using the procedure described above,
Information such as car number 1 position is temporarily stored in the storage device 109. Since the base station is not busy, it immediately sends the registration response signal C.
Send 8. Also, at time t2, mobile station M2. M3 presses the call button 401, and each register request signal RQ2 is sent.
．． Although RQ3 is called, the base station does not respond with a registration response signal because the signals overlap and cannot be decoded.

On the other hand, mobile stations Ml-M3 receive registration request signals RQI to RQ3.
When a call is made, the base station is on standby, so the retransmission time slot selection circuit 504 is also activated, and the retransmission control circuit randomly selects a time slot value, for example, the mobile station penalty is TS4, and TS2, which happens to be the same for M2 and M3, as described above. 505, retransmission signals DTI' to DT3' are generated.

After the mobile station issues the request signal, the mobile station waits for a certain period of time, for example, 0.5
Wait for a registration completion signal response from the base station for seconds.

Mobile station M1 receives the registration completion signal C9 immediately after the request, and the above-mentioned time slot value and retransmission control circuit are reset. However, mobile station 82. Since there is no response signal from the base station for M3, the registration request signal RQ2' is sent at time TS2 of the time slot value of retransmission signals DT2' to DT3'.
, automatically calls RQ3'. At this time, mobile station M2
．． If the base station is on standby, M3 randomly selects a time slot for retransmission, for example TS3. It selects TS8, generates retransmission signals DT2' and DT3', and waits for a registration response signal from the base station.

[Effects of the Invention] As is clear from the above description, according to the present invention, it is possible to receive registration request signals from multiple mobile stations even when the transmission system of the base station device is busy. After one call is completed, one registration response signal is sent to the mobile stations that made the call all at once to the registration approval state, and two calls among them occur at the same time and cannot be decoded on the base station side. This is because only the registered mobile station can automatically resend the registration request signal.

Not only can the notification time for registration approval and disapproval be shortened, but also when the registration is disapproved on the mobile station device side.

It eliminates the need for re-calling the registration request signal, eliminates wasted waiting time and anxiety about waiting for registration approval responses, and eliminates the need for base stations to respond to unnecessary inquiries from mobile stations and for mobile stations to make unnecessary calls. This eliminates the need for repeated calls, which has a great effect on the efficient operation of the system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a base station device that is an embodiment of the present invention, and FIG. 2 is a block diagram showing a configuration example of a mobile station device of the present invention opposing the base station device shown in the embodiment of FIG. The block diagrams shown in FIGS. 3, 4, and 5 are time charts for explaining the operating state of the system according to the present invention. Explanation of symbols: In FIGS. 1 to 3, 10 is a receiver system, 101 is a receiving antenna, and 102 is a receiver. 103 is an identification circuit, 104 is a switching circuit, 105 is an audio amplifier, 106 is a speaker, 107 is a decoding discrimination circuit, 10
8 is a decoding circuit, 109 is a storage device, 110 is a storage control circuit, 111 is a time measurement circuit, and 112 is a time measurement control circuit. 113 is an acceptance signal generation circuit, 114 is a time value signal generation circuit, 200 is a transmitter system, and 201 is a microphone. 202 is an audio amplifier, 203 is a call detection circuit, 204 is a main control circuit, 205 is a switching circuit, and 206 is a gate circuit. 207 is a registration completion signal generation circuit, and 208 is an encoding circuit. 209 is a transmitter, 210 is a transmitting antenna, 300 is a receiver system, 301 is a receiver, 302 is an identification circuit, 303 is an audio amplifier, 307 is a speaker, and 400 is a transmitter system. 401 is a registration button 1402 is a send/tongue button, 403 is a registration request signal generation circuit, 404 is a switching circuit, 405 is a transmitter 2406 is a time measurement circuit, and 407 is a microphone. 408 is an audio amplifier, 501 is a transmitting/receiving antenna, 502
5 is an antenna switching circuit, 503 is a main control circuit, 504 is a retransmission time slot selection circuit, 505 is a retransmission control circuit, 5
06 is a display device, and 507 is a timeout control circuit. In addition, in FIGS. 3 to 5, from the left side of the figure, B is the base station, M1 to M7 are mobile stations, and TX is the transmission state. RX is the reception state, CTI, Cr2 is the count period of the time counter in the base station, TMI to TM7 is the count period of the time counter in the mobile station, DTI to DT7 are retransmission signals, RQI to RQ7 are registration request signals from the mobile station, CM indicates a period when the base station is busy, C8 indicates a registration response signal from the base station, and TSI to TS8 indicate time slots for automatic re-calling. figure

Claims (1)

[Scope of Claims] A base station radio device for use in a response system between a base station radio device and a plurality of mobile station radio devices to which an AVM method is applied by half-duplexing of one and two frequencies, wherein the base station radio device is connected to another mobile station radio device. When a registration request signal in an arbitrary calling format is received from a plurality of mobile station devices during transmission for a call with a mobile station, a storage means for decoding and storing the registration request signal; If it is determined that decoding is impossible due to calls being made at the same time, the base station device uses a clock measurement means consisting of a plurality of clocks that start from that time each time, and the base station device immediately detects the plurality of times after the transmission is completed. means for stopping measurement, and when there is a simultaneous call from the plurality of mobile stations, generates and encodes one registration response signal including one or more pieces of measurement time value information, and the base station transmits the signal to the mobile station. means for transmitting a registration request signal to all mobile stations that have made a call while transmitting a registration request signal for a conversation with the base station; When a signal is received, if the registration request signal can be decoded, a registration response signal is generated, encoded and sent, and if decoding is impossible due to simultaneous calls from multiple mobile stations, a registration response signal is sent. 1. A base station wireless device in an AVM system, characterized in that it is equipped with means for stopping. 2. A mobile station radio device used in a response system between a base station and a plurality of mobile stations applying the AVM method by two-frequency half-duplexing, the mobile station radio device arbitrarily issuing a registration request signal to the base station, If the base station is in a call with another mobile station at the time the registration signal is issued, a means for starting the time measurement of the own vehicle at the same time as the call is made, and a means for starting the time measurement of the own vehicle at the same time as the call ends, means for stopping measurement; means for randomly selecting one of a plurality of time slots for retransmission; and extracting time value information included in a registration response signal sent after a call from the base station ends. A means for comparing the clock count value of the own vehicle, and if the same count value is included, automatically resending a registration request signal at the time of the time slot, and comparing the count value with the clock count value of the own vehicle. a means for displaying that registration has been approved if the value is not included;
Further, if the base station is not in communication with another mobile station at the time when the mobile station issues the registration request signal, means for selecting one of the retransmission time slots at the same time as the call is made;
means for automatically retransmitting the registration request signal at the time of the time slot when the registration response signal is not received within a predetermined time after issuing the registration request signal; If the registration response signal is not received even after repeating the retransmission operation a certain number of times, means is provided to display that registration is not possible and interrupt the automatic registration request operation, and to send the registration response signal within a predetermined time. A mobile station wireless device in an AVM system, characterized in that it has means for displaying that the mobile station has been approved for registration when receiving the mobile station.