JP2877204B2 - Transmitting station in radio paging system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio paging system and, more particularly, to a transmitting station provided with a configuration for performing an automatic paging test on a radio portion thereof.

[0002]

2. Description of the Related Art Conventionally, a test of a radio part in a radio paging system is described in, for example,
Vol. 40, No. 12, pp. 26-27 ",
It is performed by an automatic paging test including a wireless system.

FIG. 7 is a block diagram showing an example of a conventional radio paging system related to a radio system automatic paging test.

A central control unit (RPT) 1 accepts a call from the public telephone network, and transmits a call signal to a local control unit (DC) 2 together with a radio channel number, an automatic paging test (APT) monitoring request flag, and the like. Things.

[0005] The local control device 2 transmits the data transmitted from the central control device 1 to a plurality of base station control devices (BSCs).
F) to the base station controller 4 or the transmitter (T
X) The monitoring information of the transmitting station 9 including 5 is transmitted to the maintenance monitoring device (O
MC) 3 is notified.

[0006] The base station controller 4 outputs a signal to the transmitter 5 or notifies monitoring information of the transmitter 9 to the local controller 2 in accordance with the radio channel number added by the central controller 1.

[0007] When receiving a signal from the base station controller 4, the transmitter 5 sends the signal to the pager from the transmitting antenna 8 to the air.

In the radio paging system having such a configuration, a conventional radio paging test is performed by the transmitting station 9.
The test pager 42 is mounted on the base station controller 4 to confirm the ringing of the test call 40 to the base station controller 4, and the test pager 42 is periodically called by the test call 40 set by the central controller 1. This is performed by confirming whether or not there is a sound. Here, the test call 40 including the call signal of the test pager 42 requires an ID number for the test pager 42 as in the case of a call from a general subscriber accepted from the public telephone network.
The test call 40 includes an APT monitoring request flag, and when this flag is ON, the area control device 2 starts monitoring the test call response 41 for a certain period of time. Also,
The base station control device 4 sends the calling signal to the transmitter 5 of the channel specified according to the wireless channel number included in the test call 40. Further, the transmitter 5 receiving the calling signal transmits a radio wave from the transmission antenna 8. Further, the ringing of the test pager 42 that has received the radio wave is notified to the base station control device 4 by detecting the ringing tone. Here, in the test call response 41, if the base station control device 4 confirms the sounding of the test pager 42, an OK signal is merely sent to the upper side. That is, if the test pager 42 does not ring and the test call response is not reported to the local control device 2 within a certain period of time, it is regarded as a failure of the wireless portion, and the maintenance monitoring device 3 notifies the maintenance person.

[0009] For example, Japanese Patent Application Laid-Open No. 1-293022 discloses a method in which a test radio transmitter for transmitting a response signal to a test paging receiver is added, and a radio receiver for receiving the response signal is used as a base station. A method for checking whether a paging receiver is actually receiving a paging signal by providing it in a station is disclosed.

[0010]

However, the automatic paging test of the radio system in the above-mentioned conventional radio paging system has various problems as described below.

That is, conventionally, in an automatic paging test for checking the normality of a radio system of a radio paging system, a test pager 42 is mounted on the base station controller 4 to detect a ringing tone of the test pager 42 or to generate a ringing sound. The test was performed by detecting whether the test pager 42 sounded by detecting a change in the current. However, the test pager 42 might not sound even though radio waves from the transmitter 5 were emitted. There was a problem. This is, for example,
If the transmitting station 9 is a prefabricated iron plate building, the building itself is in a shielded state, and the test pager 42 may not sound even though radio waves are emitted from the transmitter 5. In such a state, the maintenance monitoring device 3 will report an alarm. Further, in the alarm in such a state, the normality of the radio system is determined, such as whether the radio wave from the transmitter 5 is not transmitted or whether the radio wave itself is transmitted but a data abnormality has occurred thereafter. There was a problem that it became impossible to do.

Further, in the conventional radio paging test of the radio paging system, since the test pager 42 is used, a call signal for the test pager 42 must be used. On the other hand, in order to make the pagers ring, the ID number of each test pager is required when a call signal is issued. In other words, the use of the test pager 42 in the wireless automatic paging test means that the call signal for the test pager 42 must be used together with the call signal for general subscribers even when the traffic is heavy. There was a problem that it hindered the effective use of numbers and radio waves.

Further, in the conventional automatic paging test of the paging system, there is a problem that a test pager needs to be prepared for each frequency to be tested.

An object of the present invention is to provide a radio paging system capable of performing a radio system automatic paging test regardless of the station structure of a transmitting station in order to solve the above-mentioned problems.

Another object of the present invention is to check the normality of the radio part of the radio paging system by checking whether radio waves are not transmitted from the transmitter, or the radio waves themselves are transmitted from the transmitter, but a data abnormality occurs thereafter. It is an object of the present invention to provide a radio paging system capable of recognizing whether a call has been made.

Another object of the present invention is to provide a radio paging system that can effectively use an ID number and a radio wave without using an ID number for a test pager during a radio system automatic paging test.

[0017]

The present invention provides the following means for solving the above-mentioned problems.

According to the present invention, as a first transmitting station, there is provided a radio paging system for transmitting a paging signal received via a local control device as a paging signal from a transmitting antenna to a pager via a transmitter. A receiver including, at a transmitting station, storage means for storing the received paging signal; a receiving antenna for receiving the radio paging signal transmitted from the transmitting antenna as a received signal; And a data demodulator that demodulates the calling signal and outputs the demodulated signal as a demodulated signal, compares the calling signal with the demodulated signal, and determines whether the calling signal matches the demodulated signal. A comparator that determines and outputs a determination signal, and is connected to the data demodulator and the comparator, and outputs one of the determination signal and the demodulated signal according to an output selection signal. And a switch for transmitting an output signal to the local control apparatus as an output signal. The test apparatus for performing an automatic paging test of a wireless system is provided. Can be

According to the present invention, as the second transmitting station, the first transmitting station is further provided with a time-measuring means, and the time-measuring means is provided with the radio wave transmitted from the transmitting antenna. When the reception signal corresponding to the paging signal is not received even after a lapse of a predetermined time, paging signal non-reception information is output to the local control device via the switch. A transmitting station in the paging system is obtained.

According to the present invention, as the third transmitting station, any one of the first and second transmitting stations, wherein the receiver has a frequency changing function of sequentially changing a tuning frequency. There is provided a transmitting station in a radio paging system, comprising: a plurality of radio channels having different frequencies, which can be selectively received by one receiver.

According to the present invention, as the fourth transmitting station, any one of the first to third transmitting stations, further comprising a monitor terminal connected to the comparator, A transmitting station in the radio paging system, characterized in that a signal and the demodulated signal can be analyzed.

According to the present invention, as a fifth transmitting station, a paging signal received via a local control device is transmitted as a paging signal from a transmitting antenna to a pager via a transmitter. A transmitting station in the system, storage means for storing the received paging signal, a receiver provided with a receiving antenna for receiving the radio paging signal transmitted from the transmitting antenna as a received signal; A data demodulator that demodulates a received signal into the format of the calling signal and outputs the demodulated signal as a demodulated signal, compares the calling signal with the demodulated signal, and checks whether the calling signal matches the demodulated signal. A comparator that outputs a determination signal by determining whether the calling signal and the demodulated signal do not match. Transmitting station is obtained in a radio paging system, characterized by comprising a comparator for outputting a difference between.

Further, according to the present invention, as a first radio paging system, a central control unit connected to a public line network receives a call, transmits an input signal including a paging signal to a local control unit, and A control device distributes an input signal transmitted from the central control device to a plurality of transmitting stations, transmits monitoring information of the transmitting station to a maintenance monitoring device, and transmits a pager from a transmitting antenna via a transmitter of the transmitting station. In the radio paging system for transmitting the paging signal as a radio paging signal, the transmitting station includes: a storage unit for storing the received paging signal; and the radio paging signal transmitted from the transmission antenna. A receiver provided with a receiving antenna for receiving as a received signal, a data demodulator for demodulating the received signal into the ringing signal format and outputting the demodulated signal, Compared collating the calling signal and the demodulated signal, a comparator for outputting a determination signal by determining whether the the calling signal and the demodulated signal is matched,
If it is determined that the call signal and the demodulated signal do not match, a test apparatus for performing a wireless automatic paging test having a comparator that outputs a difference between the call signal and the demodulated signal A paging system characterized by comprising:

Further, according to the present invention, as a second radio paging system, a central controller connected to a public line network receives a call, transmits an input signal including a paging signal to a local controller, A control device distributes an input signal transmitted from the central control device to a plurality of transmitting stations, transmits monitoring information of the transmitting station to a maintenance monitoring device, and transmits a pager from a transmitting antenna via a transmitter of the transmitting station. In the radio paging system for transmitting the paging signal as a radio paging signal, the transmitting station includes: a storage unit for storing the received paging signal; and the radio paging signal transmitted from the transmission antenna. A receiver provided with a receiving antenna for receiving as a received signal, a data demodulator for demodulating the received signal into the ringing signal format and outputting the demodulated signal, Compared collating the calling signal and the demodulated signal, and a comparator for outputting a determination signal by determining whether the the calling signal and the demodulated signal is matched,
The input signal includes an output selection signal for selecting one of the determination signal and the demodulated signal, and the transmitting station is connected to the data demodulator and a comparator, and according to the output selection signal, A switching device for selecting one of the determination signal and the demodulated signal and transmitting the selected signal as an output signal to the local control device; and a time measuring means, wherein the radio paging transmitted from the transmitting antenna is further provided. Outputting a call signal non-reception information to the local control device via the switch when the reception signal corresponding to the signal has not been received even after a predetermined time has elapsed. The system is obtained.

[0025]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) A radio paging system capable of performing a radio system automatic paging test according to a first embodiment of the present invention will be described below with reference to FIGS. . Here, FIG. 1 is a diagram showing a configuration of the radio paging system of the present embodiment. FIG. 2 shows an example of a signal format from the central control device 1 to the area control device 2, and FIG. 3 shows an example of a signal format from the area control device 2 to the base station control device 4. It is.

The central control unit 1 accepts a call from the public telephone network, and transmits a call signal 35 to the local control unit 2 together with a radio channel number 33 and an APT monitoring request flag 34.

The local control device 2 receives the radio channel number 33 received from the central control device 1, the APT monitoring request flag 3
4 and the call signal 35 are distributed to a plurality of base station controllers 4 and the monitoring information of the transmitting station 9 is notified to the maintenance monitoring device 3.

The base station control device 4 outputs a signal to the transmitter 5 and notifies the local control device 2 of monitoring information of the transmission station 9 in accordance with the radio channel number 33 added by the central control device 1. .

Upon receiving the call signal 12 from the base station controller 4, the transmitter 5 transmits the signal to the pager from the transmitting antenna 8 via radio waves.

The paging signal transmitted from the transmitting antenna 8 is passed from the receiving antenna 7 and the receiver (RX) 6 to the base station controller 4, and the received data is analyzed in the base station controller 4. Here, the receiving antenna 7 is installed so that at least a part thereof goes out of the station of the transmitting station 9.

Next, the base station controller 4 according to the present embodiment will be described in more detail with reference to FIG.

The data buffer 20 temporarily stores the input signal 10 transmitted from the local control device 2. The input signal 10 is sent to the transmitter 5 via the data buffer 20.

The data demodulator 21 demodulates the signal 13 received from the receiver 6 into the same format as the input signal 10.

The comparator 22 compares the call signal 15 before transmission stored in the data buffer 20 with the received data (the call signal) 18 received via the receiver 6 and the data demodulator 21. And the comparison result (O
K / NG) 17 to the switch 23. The comparator 22 has a monitor terminal 14 and can monitor data to be compared.

The switch 23 outputs the comparison signal (OK / NG) 17 from the comparator 22 to the output signal 11 to be reported to the higher-level device such as the local controller 2 or the data demodulator 2
This is a device for switching whether to receive data 18 through 1 or not.

Next, the operation of this embodiment will be described.

First, when the central control unit 1 receives a call signal 35 of a general subscriber from the public telephone network, the central control unit 1 adds a radio channel number 33 and an APT monitoring request flag 34 to the call signal 35 to the local control unit 2. Send out. Where A
The PT monitoring request flag 34 is periodically turned on.

Next, if the APT monitoring request flag 34 is ON, the local control device 2
Start T monitoring.

Here, the maintenance monitoring device 3 responds to the signal passed from the central control device 1 to the local control device 2 by using the output signal 1 output from the base station control device 4 to the local control device 2.
An output selection signal 36 for selecting whether 1 is a collation result (OK / NG) or received data can be added. Further, the maintenance monitoring device 3 can turn on the APT monitoring request flag 34 and add the designated ID number 37 to the signal passed from the central control device 1 to the local control device 2. Further, in response to this, the maintenance monitoring device 3 turns on the APT monitoring request flag 34 for the signal passed from the central control device 1 to the local control device 2, selects the output selection signal 36, and specifies the designated ID number 37. Can be monitored for the specific subscriber specified by the specified ID number. As a result, OK / NG or received data is reported from the base station control device 4 to the maintenance monitoring device 3 via the regional control device 2 as a test result for the signal of the designated ID number, and the received data is transmitted to the maintenance monitoring device 3. Can be analyzed. Further, in order to enable a test even when there is no call from a general subscriber, the maintenance monitoring device 3 transmits an I-mode signal transmitted from the transmitter 5 for testing.
Radio wave of DLE pattern (In this embodiment, it is not necessary to make the pager sound like in the prior art,
No ID number is required for the test pager. ) To the base station controller 4.

When a general call whose APT monitoring request flag 34 is ON reaches the base station controller 4 as the input signal 10,
The general call is passed to the transmitter 5 for each corresponding channel, and transmitted as a radio wave from the transmission antenna 8.

The radio wave is received by the receiving antenna 7, and data is transmitted from the receiver 6 to the base station controller 4.

Here, the receiver 6 is provided with a control device 24 of a synthesizer type, and can selectively receive a plurality of channels of different frequencies. Antenna 7
Receives a calling signal.

The base station controller 4 compares the call signal sent to the transmitter 5 with the call signal received from the receiver 6, and reports the result of the comparison to the higher order (area control device 2).

More specifically, in the input signal (general call) 10 from the local control device 2, the APT monitoring request flag 34
Is ON, the base station controller 4 temporarily stores the call signal in the data buffer 20. This input signal is transmitted to the transmitter 5 according to the wireless channel number 33 as in the conventional technique.

The paging signal transmitted from the transmitter 5 via the transmitting antenna 8 is taken into the base station controller 4 via the receiving antenna 7 and the receiver 6.

The signal 13 received by the receiver 6 is converted by the data demodulator 21 into the same format as the signal sent to the transmitter 5. The signal 18 converted by the data demodulator 21 is sent to a comparator 22 and a switch 23. The comparator 22 compares the signal 15 stored in the data buffer 20 before being transmitted to the air with the signal 18 transmitted to the air received via the receiver 6 and the data demodulator 21, The normality of the data relating to the call signal of the pager is confirmed, and the collation result 17 of the content such as OK if the content of the pager sounds and NG if the content does not sound is passed to the switch 23.

Here, the operation of the comparator 22 will be described in more detail.

POCSAG (Post O) used for a call signal
ffice Code Standardization Advisory Group) The codeword of the signal is as shown in FIG. This codeword is composed of 32 bits,
It comprises a bit information portion 30, a 10-bit BCH error correction code 31, and a 1-bit parity 32.

The comparator 22 compares the bits of the code word and performs the following operation.

(A) If both the information part 30 and the BCH error correction code 31 are correct, OK is output.

(B) If the information portion 30 is different but the BCH error correction code 31 is correct and error correction is not possible, N
G is output.

(C) The information portion 30 is different and the BC
If the H error correction code 31 is correct but error correction is not possible, NG is output.

(D) If the BCH error correction code 31 is different, NG is output.

The comparator 22 has a monitor terminal 14 for monitoring a call signal. The comparator 22 can analyze a signal before transmitting to the air and a signal after transmitting to the air for each channel. it can.

The switch 23 receives the output selection signal portion 36 included in the input signal 10 from the local control device 2 as an output signal from the data buffer 20 and reports the result to the local control device 2 based on the test result of the call test. Some output signal 11
Is switched between the OK / NG collation result 17 from the comparator 22 and the demodulated received data 18.
Furthermore, the switch 23 has a timekeeping function, and the corresponding received data 13 has not been input from the receiver 6 even after a certain period of time has elapsed since the data 12 was transmitted from the data buffer 20 to the transmitter 5. In such a case, the switch 23 can output information indicating that the call signal has not been received together with the comparison result NG. That is, in the case where the comparison result NG is detected, it is possible to distinguish whether it is NG due to the interruption of the radio wave or NG detected by the comparator 22 when the radio wave itself is transmitted but the data corruption at the time of information transfer.

In the paging system for the automatic paging test of the radio system according to the present embodiment as described above, the receiving antenna 7 is installed outside the station of the transmitting station 9 so that the structure of the station ( For example, transmitted radio waves can be received without being affected by, for example, the inside of a station being shielded due to the iron plate structure.

Also, in the radio paging system according to the radio paging test of the present embodiment, the frequency is sequentially switched by one receiver for a plurality of channels by using a synthesizer system for the receiver. Therefore, the size can be reduced as compared with the related art in which an antenna and a receiver have to be provided for each channel.

Further, in the radio paging system according to the present embodiment of the radio paging test, since a test pager terminal is not required, it is not necessary to register an ID number dedicated to the test pager.
Since the number is assigned to the user ID, the ID number and the radio wave can be effectively used.

Further, in the radio paging system according to the radio paging test of the present embodiment, since the maintenance data can be confirmed by the maintenance monitoring device 3, the maintenance personnel can actually reach each transmitting station when an alarm occurs. The data can be analyzed on the control station side even if the operation is not performed.

(Second Embodiment) A second embodiment of the present invention is an improvement of the above-described first embodiment. Therefore, only the portions different from the first embodiment will be described below.

FIG. 6 shows the configurations of the base station controller 4 and the receiver 6 in the present embodiment.

Referring to FIG. 6, data demodulator 21 is provided outside base station controller 4, in this embodiment, in the receiver. Further, in the present embodiment, unlike the first embodiment, no switch 23 is provided.

The base station controller 4 sends a call signal to the transmitter 5 of the channel specified by the radio channel number, and compares data transmitted for a specific signal with received data.

The data demodulator 21 in the receiver 6 converts the received data 19 received by the receiving antenna 7 into the same format as the data transmitted from the base station controller 4 to the transmitter 5.

In this embodiment, the switching device 2
3 in the first embodiment shown in FIG.
Output selection signal 16 becomes unnecessary.

Here, the data to be sent to the upper side is O
K signal, NG signal when not receiving call signal, NG when data difference
There are three types of signals.
Since the difference between the data transmitted together with the signal and the received data is reported to the upper side, the data can be analyzed by the maintenance monitoring device.

[0068]

As described above, according to the present invention, the receiving antenna is installed outside the transmitting station.
The transmitted radio wave can be received without being affected by the structure of the station building of the transmitting station (for example, the inside of the station is shielded due to the iron plate structure).

Further, according to the present invention, the paging test is performed by comparing the transmission data and the reception data without using the test pager terminal. Therefore, it is not necessary to register the test pager-dedicated ID number. ID
Since the number is assigned to the user ID, the ID number and the radio wave can be effectively used.

Further, according to the present invention, the received data can be reported from the transmitting station to the regional control station, and the data can be confirmed on the maintenance monitoring device. The data can be analyzed on the control station side without the need for maintenance personnel.

Further, by using the synthesizer method for the receiver, the tuning frequency of the receiver can be sequentially changed so that radio waves can be selectively received for a plurality of radio channels having different frequencies. Therefore, a single receiver can be used without requiring a plurality of receivers.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration related to a radio paging test of a radio paging system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an example of a signal format between a central control device and a local control device in FIG. 1;

FIG. 3 is a diagram illustrating an example of a signal format between a local control device and a base station control device in FIG. 1;

FIG. 4 is a block diagram illustrating a configuration of a base station control device according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a codeword of a POCSAG signal.

FIG. 6 is a configuration diagram used for describing a radio paging system according to a second embodiment of the present invention.

FIG. 7 is a configuration diagram showing a configuration related to a wireless automatic paging test of a conventional wireless paging system.

[Explanation of symbols]

 Reference Signs List 1 Central controller (RPT) 2 Regional controller (DC) 3 Maintenance monitoring device (OMC) 4 Base station controller (BSCF) 5 Transmitter (TX) 6 Receiver (RX) 7 Receiving antenna 8 Transmitting antenna 9 Transmitting station Reference Signs List 10 input signal 11 output signal 12 call signal 13 signal 14 monitor terminal 15 call signal 16 output selection signal 17 comparison / collation result (OK / NG) 18 received data 19 received data 20 data buffer 21 data demodulator 22 comparator 23 switch 24 Control device 30 Information part 31 BCH error correction code 32 Parity 33 Radio channel number 34 APT monitoring request flag 35 Call signal 36 Output selection signal 37 Designated ID number

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI H04Q 7/20

Claims (8)

(57) [Claims] 1. A transmitting station in a radio paging system for transmitting a paging signal received via a local control device from a transmitting antenna to a pager via a transmitter as a paging signal, wherein: Storage means for storing; a receiver having a receiving antenna for receiving the radio paging signal transmitted from the transmitting antenna as a reception signal; demodulation of the reception signal into a format of the paging signal; A data demodulator that outputs as a signal, a comparator that compares and compares the calling signal and the demodulated signal, and outputs a determination signal by determining whether the calling signal and the demodulated signal match. , Connected to the data demodulator and the comparator, selects one of the determination signal and the demodulated signal according to an output selection signal, and The transmitting station in a radio paging system comprising the test device for automatic paging testing wireless system having a switching unit for transmitting a force signal. 2. The transmitting station in the radio paging system according to claim 1, further comprising a timer, wherein the timer corresponds to the radio paging signal transmitted from the transmitting antenna. A transmission station in a radio paging system, characterized in that when a signal has not been received even after a predetermined time has elapsed, information on non-reception of a call signal is output to the local control device via the switch. 3. The transmitting station in the radio paging system according to claim 1, wherein the receiver has a frequency changing function of sequentially changing a tuning frequency. A transmitting station in a radio paging system, wherein a single receiver can selectively receive a plurality of radio channels. 4. The transmitting station in the paging system according to claim 1, further comprising a monitor terminal connected to the comparator,
A transmitting station in a radio paging system capable of analyzing the paging signal and the demodulated signal. 5. The transmitting station in the radio paging system according to claim 1, wherein the comparator determines that the paging signal and the demodulated signal do not match with each other. A transmitting station in a radio paging system, further comprising a function of outputting a difference between a paging signal and the demodulated signal. 6. A transmitting station in a radio paging system for transmitting a paging signal received via a local control device from a transmitting antenna to a pager via a transmitter as a paging signal. Storage means for storing; a receiver having a receiving antenna for receiving the radio paging signal transmitted from the transmitting antenna as a reception signal; demodulation of the reception signal into a format of the paging signal; A data demodulator that outputs as a signal, a comparator that compares and compares the calling signal and the demodulated signal, determines whether the calling signal matches the demodulated signal, and outputs a determination signal. And a comparator that outputs a difference between the calling signal and the demodulated signal when it is determined that the calling signal and the demodulated signal do not match. The transmitting station in a radio paging system, characterized in that. 7. A central control unit connected to a public line network receives a call, transmits an input signal including a call signal to a local control unit, and the local control unit transmits the input signal transmitted from the central control unit. And transmitting the monitoring information of the transmitting station to a maintenance monitoring device, and transmitting the paging signal as a paging signal from a transmitting antenna to a pager via a transmitter of the transmitting station. In the paging system, the transmitting station includes: a storage unit for storing the received paging signal; and a receiver including a reception antenna for receiving the radio paging signal transmitted from the transmission antenna as a reception signal. A data demodulator that demodulates the received signal into the format of the call signal and outputs the demodulated signal as a demodulated signal; A comparator that outputs a determination signal by determining whether or not the signal and the demodulated signal match with each other, and when determining that the calling signal and the demodulated signal do not match, And a comparator for outputting a difference between the demodulated signal and a demodulated signal. 8. A central control unit connected to a public telephone network receives a call, transmits an input signal including a call signal to a local control unit, and the local control unit transmits the input signal transmitted from the central control unit. And transmitting the monitoring information of the transmitting station to a maintenance monitoring device, and transmitting the paging signal as a paging signal from a transmitting antenna to a pager via a transmitter of the transmitting station. In a paging system, the transmitting station includes a storage unit for storing the received paging signal and a receiving antenna for receiving the radio paging signal transmitted from the transmitting antenna as a reception signal. And a data demodulator that demodulates the received signal into the format of the calling signal and outputs the demodulated signal.
Comparing and comparing the calling signal and the demodulated signal, comprising a comparator that outputs a determination signal to determine whether the calling signal and the demodulated signal match, the input signal, The transmitting station is connected to the data demodulator and the comparator, and includes the determination signal and the demodulated signal according to the output selection signal. Further comprising: a switch for selecting any one of the above and transmitting the output signal to the local control device as an output signal; and a timing unit, wherein the reception corresponding to the radio paging signal transmitted from the transmission antenna is provided. A wireless paging system, characterized in that, if a signal is not received even after a predetermined time has elapsed, information on non-reception of a call signal is output to the local control device via the switch.