JPH0442628A - Radio communication system - Google Patents

Abstract

PURPOSE:To attain the formation of a communication system with high reliability by providing a function supervising the radio function to a system control section controlling the entire system. CONSTITUTION:A system control section 1 issues a command of sending a test radio wave to specific radio base stations 301 - 312 or radio portable terminal equipments 401 - 430 to check the radio function of a radio communication equipment and checks the result by allowing other radio base station or radio portable terminal equipment to receive the radio wave to check the transmission state and the reception state. Thus, the state of each of the radio base stations 301 - 312 is read, and the operating state of the system is grasped. Thus, the reliability of the radio telephone system is improved.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a wireless communication system, and particularly to a wireless communication system having an abnormality monitoring function.

[Conventional technique #i]

BACKGROUND ART Wireless communication systems consisting of switching equipment, wireless communication equipment, etc. are used in public places by a large number of users, so it is very important to take preventive measures and monitor system abnormalities such as inability to transmit and receive signals and interference. As a measure to prevent abnormalities in conventional wireless communication systems, for example,
There is a method described in JP-258127. In the above conventional example, in a system where a large number of wireless base stations exist, each wireless base station checks in advance whether an adjacent control device is using a control wireless channel before transmitting its location information. A function is provided to determine whether By doing this, it is possible to avoid interference between the location information transmission and the connection control signal, and as a result, the inconvenience of the wireless mobile terminal being unable to receive either the location information signal or the connection control signal can be prevented. there was.

[Problem to be solved by the invention]

However, in such conventional wireless communication systems, preventive measures against abnormalities such as power outages and line disconnections have been taken into consideration, but the transmission function or reception function of wireless communication devices such as wireless base stations and wireless mobile terminals has been No functionality was provided to monitor the functionality. Therefore, when a transmission/reception failure occurs due to a defect in the wireless part, it takes a great deal of time to investigate the cause. An object of the present invention is to solve such problems in wireless communication systems and provide a highly reliable communication system. 1. Means for Solving the Problems The above problems can be solved by providing a function for monitoring radio functions in a radio communication system consisting of radio communication devices such as an exchange, a radio base station, and a radio mobile terminal. As for the method. This becomes possible by providing a function to monitor wireless functions in the system control unit that controls the entire system. Another method is to provide the wireless communication device with a function to self-monitor its wireless part, and if there is an abnormality in that part, the problem can be solved by providing a function to notify the user and the communication system control device. I can do it.

[Effect]

In order to check the wireless functionality of the wireless communication device, the system control unit instructs a specific wireless base station or wireless mobile terminal to transmit test radio waves, and transmits the test radio waves to other wireless base stations or wireless mobile terminals. You can check the transmission status and reception status by receiving it with a wireless mobile terminal. Alternatively, radio base stations and radio mobile terminals that have a self-monitoring function check the functionality of their own radio portions periodically or as needed. For example, in monitoring the transmission function, a test radio wave is transmitted to check the output, and the radio wave is received by its own wireless receiving device. A built-in monitoring circuit determines whether the reception level of the received signal is above a specified level. If the reception level is below the specified level, the user or communication system control device is notified of this fact. This allows system abnormalities to be detected and countermeasures to be taken.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1(a) shows a wireless base station according to the present invention, and
FIG. 2B also shows the circuit configuration of the wireless mobile terminal. Further, FIG. 2 shows a wireless telephone system using these wireless communication devices. The wireless telephone system in the figure includes a system control unit 1 (one unit), an exchange 2
(1 unit), wireless base stations 301 to 312 (12 units), and wireless mobile terminals 401 to 430 (30 units). However, only the negative part of the wireless communication device is shown. On the other hand, the circuit configuration of the wireless communication device shown in FIGS. 1(a) and 1(b) is as follows. That is, both have a control circuit 50, a modulation circuit 51, a transmission circuit 52, a demodulation circuit 53 . Receiving circuit 54. A keypad 6o, a display 61, etc. are also incorporated, and communications are normally performed using these circuits. moreover,
Based on the present invention, these control devices and terminals include
A transmitting/receiving circuit for monitoring its own wireless output is built in, and the wireless output can be checked periodically or when the user deems it necessary. Self-monitoring is performed as follows. That is, a modulation circuit 51 for telephone calls and a transmission circuit 52 are used to transmit radio waves, which are received by a reception circuit 55 for monitoring, and a determination circuit 56 determines the reception level. If the reception level is below a certain standard, the monitoring circuit 57 displays an error message. That is, in the wireless base station shown in FIG. 1(a), a notification is sent through the control circuit 50 to the system control unit 1 that manages the entire communication system. On the other hand, in a wireless mobile terminal, the user is notified. The system control unit 1 transmits a self-monitoring execution signal to each wireless base station, for example, every 24 hours. The wireless base station that receives the signal performs the self-monitoring process described above and reports the results. In this way, the system control unit reads the status of each wireless base station and grasps the operating status of the system. In the present invention, it is possible to monitor not only the signal level but also the modulation/demodulation circuit. FIG. 3 shows an example of the circuit configuration of a wireless mobile terminal in which the demodulation determination circuit 58 based on the present invention is incorporated. Monitoring using this circuit is performed in the following steps. The control circuit 50 provides the modulation circuit with a specified frequency,
Then, it instructs amplitude modulation and transmits a test wave. The radio waves received by the monitoring receiving circuit 55 are demodulated by the demodulation determination circuit 58 and compared with the modulated signal from the modulation circuit 51. The determination result is sent to the control circuit 50 through the monitoring circuit 57.
and display it on the display 61. The above self-monitoring can also be performed in the radio base station of FIG. 1(a) using a similar method. FIG. 4 shows the circuit configuration of a wireless base station when similar monitoring is performed regarding the reception function. The circuit includes a monitoring transmission circuit 70 and a reception level determination circuit 71. To check the receiving function, a test wave is transmitted from the transmitting circuit 70, received by the receiving circuit 54, and its level is determined by the determining circuit 71.
Judge by. The result is sent to the system control section through the control circuit 5o. Another embodiment of the invention is to use a monitoring receiver circuit to determine the extent of wireless interference from other wireless devices. In Fig. 1, a test wave is transmitted from one wireless base station or a wireless mobile terminal, received by another device or a monitoring circuit of the terminal, and the level of the signal is checked. It is possible to know the degree of interference from At this time, it is also possible to identify the devices by changing the frequency of the test wave for each device. FIG. 5 is a diagram showing another embodiment based on the present invention. The radio base station shown in (a) of the figure and the radio portable terminal shown in (b) are equipped with a special identification signal addition circuit 72 and a special identification signal determination circuit 73. These circuits are provided to specifically specify a wireless mobile terminal or a wireless base station to be used for communication. For example, when checking the communication status via a certain wireless base station. A wireless base station is specified using a keypad provided in the wireless mobile terminal, and the special identification signal adding circuit 72 adds the identification number of the specified wireless base station and transmits the signal. The special identification signal determination circuit 73 of the radio base station determines the identification signal in the transmitted signal, and performs a receiving operation only when it is designated. By providing such a function, it is possible to check the communication status in a specific wireless communication device. Furthermore, the communication system control unit 1 is also capable of simultaneously communicating with a plurality of wireless mobile terminals using this function.
An identification signal determination circuit used in normal communications may also be used. In the wireless communication system shown in Figure 2, if each wireless base station or wireless mobile terminal does not have a self-monitoring function, the same effect can be achieved by providing the system control unit with that function. Obtainable. That is, the system control unit can check the transmission and reception functions by instructing any radio base station to transmit a test wave, receiving the test wave at another radio base station, and determining the signal level. By using the present invention, it is possible to monitor both the wired part and the wireless part of the system, and in the event of an abnormality, it is possible to quickly determine where a failure has occurred.

【Effect of the invention】

According to the present invention, it is possible to monitor the wireless output and input sections, which were not conventionally monitored, and it is possible to improve the reliability of the wireless telephone system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the circuit configuration of a wireless communication device based on the present invention, FIG. 2 is a schematic diagram of a wireless telephone system, and FIG.
Figure 1 is a block diagram showing the circuit configuration of another wireless mobile terminal based on the present invention, Figure 4 is a block diagram showing the circuit configuration of another wireless base station based on the present invention, and Figure 5 is a block diagram showing the circuit configuration of another wireless mobile terminal based on the present invention. FIG. 2 is a block diagram showing a circuit configuration of a wireless communication device. Explanation of symbols 1... Communication system control unit, 2... Exchange, 301
~312... Radio base station, 401-430... Wireless mobile terminal, 50... Control circuit, 51... Modulation circuit for communication, 52... Transmission circuit for communication, 53... For communication Demodulation circuit, 54... Communication receiving circuit, 55... Self-monitoring receiving circuit, 56... Signal level determination circuit, 57.
...Monitoring circuit, 58...Modulation/demodulation determination circuit, 60...
Keypad, 61... Display, 70... Self-monitoring transmission circuit, 71... Signal level determination circuit, 72
...With special identification number Figure 1 Figure 2 Figure 3 41111

Claims (1)

[Scope of Claims] 1. In a wireless communication system consisting of an exchange, a wireless base station, a wireless mobile terminal, etc., a function is provided to monitor the wireless functions of the wireless base station and the wireless mobile terminal. A wireless communication system featuring: 2. The wireless communication system according to claim 1, wherein the wireless base station and the wireless mobile terminal are provided with a function of monitoring their own wireless functions. 3. In the wireless communication system according to claim 1, a function is provided to display or notify other devices of the presence or absence of an abnormality in the transmitting function or receiving function of the wireless base station and the wireless mobile terminal. A wireless communication system featuring: 4. In the wireless communication system according to claim 1, one or more wireless base stations in the system and a wireless mobile terminal are used to communicate with other wireless base stations in the system,
and a wireless communication system characterized by having a function of evaluating the transmitting and receiving functions of the wireless mobile terminal. 5. The wireless communication system according to claim 2, in which a circuit for monitoring a transmission function installed in a wireless base station and a wireless mobile terminal is used to monitor reception status from other wireless base stations and wireless mobile terminals. A wireless communication system characterized by having a function to evaluate. 6. In the wireless communication system according to claim 1, determining the modulation/demodulation function of the wireless base station and the wireless mobile terminal,
A wireless communication system characterized by having a function of displaying the presence or absence of the abnormality or notifying other devices. 7. The wireless communication system according to claim 1, wherein the wireless base station and the wireless mobile terminal are provided with a function of specifying the wireless mobile terminal or wireless base station to be used during communication or function monitoring, A wireless communication system characterized by having a function of checking the operation of a specific device using this and displaying the presence or absence of an abnormality or notifying other devices. 8. The wireless communication system according to claim 1, which has a function to check whether there is an abnormality in both the wired part and the wireless part, and has a function to determine whether the failure location is in the wired part or the wireless part. , a wireless communication system characterized by having a function of displaying the results or notifying other devices. 9. A wireless communication device having a function of checking whether there is an abnormality in both a wired part and a wireless part, and having a function of displaying or notifying the results. 10. A wireless communication device characterized by having a function of monitoring its own wireless function and a function of displaying or notifying the results. 11. A wireless communication device characterized by having a function of selecting an arbitrary wireless mobile terminal or wireless base station.