JPH11215042A - Digital portable telephone system for automobile use - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio base station device wherein a quick fault finding as well as repair is ensured by narrowing down possible faulty parts, without disconnecting a circuit upon occurrence of a fault on a busy line. SOLUTION: When an abnormality in sound quality occurs in a busy mode and a test is carried out by means of a terminal 5 in this system, a circuit used by an ID terminal 5 is retrieved by means of a monitoring console 44 and a monitoring request is given to a radio device 2 which is included in radio base station 1 where the circuit used by the terminal 5 is connected from the console 44 for a speech channel. A speech channel selection part 23a selects a speech channel which is under the control of a control part 22 and based on the monitoring request. Then a codec part 23b converts the selected speech channel into analog voices and sends them to a voice monitoring device 43 of a monitoring center 4. Testing personal checks by means of the device 43 whether an upward or downward circuit has the abnormality in sound quality.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital vehicle
The present invention relates to a mobile phone system, and more particularly, to narrowing down a trouble occurrence location when an abnormal call quality occurs in a digital car / mobile phone system.

[0002]

2. Description of the Related Art Conventionally, in a digital car / cell phone system, when an abnormality occurs on a line during a call,
The user using the terminal of the system reports the occurrence of the abnormality to the communication carrier as a complaint.

[0003] When the occurrence of an abnormality in a line during a call is reproduced in the system, the telecommunications carrier monitors the line at the input / output unit of the exchange in the exchange, or once disconnects the line, and tests the test equipment and test equipment. An error occurrence part is narrowed down using a signal.

[0004]

In the above-mentioned conventional digital car / mobile telephone system, when an abnormal occurrence on a line during a call is reproduced, a line monitor is performed at an input / output unit of the exchange. If only the line monitor at the input / output unit is used, only the front and rear sides are separated based on the exchange, and it is not possible to separate the transmission path unit and the radio base station unit in the system. Can not do.

In recent systems, the structure and functions of the system have become more complicated.
When performing isolation using test equipment and test signals,
Since the abnormal line is disconnected and the abnormal state becomes latent due to natural recovery or the like, the line abnormality cannot be reproduced, and as a result, it becomes impossible to perform the separation.

Accordingly, an object of the present invention is to solve the above-mentioned problems, and to make it possible to narrow down an abnormality generating section without disconnecting the line when a line abnormality occurs during a call. It is an object of the present invention to provide a digital car / mobile phone system capable of early detection and solution.

[0007]

A digital car / mobile phone system according to the present invention includes a radio base station including a radio apparatus for performing radio transmission and reception with a mobile phone terminal, and a radio base station connected to the radio base station and provided on a transmission path. A digital car / mobile phone system comprising a monitoring center for monitoring the occurrence of a fault in the digital car / mobile phone system, wherein a monitor means for monitoring a line during a call in response to an external instruction, and a signal monitored by the monitor means is transferred to the monitoring center. And a transfer unit that performs the transfer.

That is, the radio base station apparatus of the present invention includes a monitor device capable of monitoring all communication lines inside the radio device, and further includes an external output unit for the monitor signal so that the monitor signal can be transferred to the monitoring center. .

With the above configuration, when an abnormality occurs on a line during a call, the monitoring center first specifies the base station or line number where the line abnormality has occurred, The monitor start control is performed on the radio base station apparatus and the line in the base station in the up direction and the down direction. Then, the sound quality of the monitor signal is checked at the monitoring center, and the overall evaluation is performed together with the results monitored by the switching equipment, etc., to determine whether the abnormality occurrence unit is a wireless communication system, a transmission system, or any other unit (exchange system, Fixed line system, etc.)
It becomes possible to narrow down the thing.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a system configuration of a digital car / mobile phone system according to one embodiment of the present invention. In the figure, a digital car / mobile phone system according to one embodiment of the present invention comprises a radio base station 1, a monitoring center 4, and an ID terminal 5, and the monitoring center 4 is connected to another network 6, 5 is monitored for a failure on the transmission path.

The radio base station 1 comprises a radio device 2 and a transmission device 3
The wireless device 2 is configured to perform wireless transmission and reception with the ID terminal 5. The wireless device 2 includes the transceivers 21-1 to 21-n, the control unit 22, and the monitor device 2.
The monitor device 23 includes a communication channel selection unit 23a and a codec unit 23b.

The communication channel selecting section 23a has a function of selecting only an arbitrary communication signal from a branched transmission line. Also, the codec unit 23b includes
It has a function of converting the communication signal (digital signal) selected in 3a into an analog voice signal. This analog audio signal is sent to the monitoring center 4 through a dedicated line or a telephone line 200.
Is sent to the voice monitoring device 43.

The monitoring center 4 includes a transmission device 41 and an exchange 4
2, an audio monitoring device 43, and a monitoring control console 44, and the exchange 42 has a synthesizing unit 42 a. Note that A to C in the figure each indicate a turning point.

The operation of one embodiment of the present invention will be described with reference to FIG. Note that, in one embodiment of the present invention, a test operation is performed after an abnormality has occurred in a line during a call, and a user using an ID terminal (not shown) reports the occurrence of the abnormality to a communication carrier as a complaint. I do.

In this test operation, when a test is performed using the ID terminal 5 and an abnormal sound quality occurs during a call on the ID terminal 5, first, the monitor control console 44 is operated to use the ID terminal 5. Search for a line that is

In the search for the line used by the ID terminal 5, the ID number used by the tester is obtained from the telephone number reported by the tester using the ID terminal 5 and the current location.
Guess the station name of the wireless base station 1 connected to the terminal 5,
By operating the monitoring control console 44, a monitoring screen of the wireless base station 1 is displayed.

At this time, a plurality of lines during a call are displayed on the monitoring screen, and the line display can further display detailed information for each line, and a telephone number is included in the detailed information. include. Therefore, a line displaying the same telephone number information as the telephone number (the telephone number of the ID terminal 5) that has received the failure report can be specified as a line having a communication quality failure.

After the line route is specified, the monitor control console 44 requests the wireless device 2 in the wireless base station 1 to which the line is connected to monitor the specified communication channel. This monitor request is sent to the combining section 42a of the exchange 42.
At the same transmission path 100 as the speech signal.
Is transferred to the wireless base station 1.

The communication channel selecting section 23a in the wireless device 2
Then, the communication channel is selected according to the control of the control unit 22 based on the monitor request instructed from the monitoring control console 44, and the communication signal is transmitted to the codec unit 23b. The codec unit 23b converts the call signal into analog voice and outputs it to a dedicated line or a telephone line 200 or the like.

The analog voice is transmitted to a dedicated line or a telephone line 20 or the like.
0 is sent to the voice monitoring device 43 in the monitoring center 4. The monitor checks through the audio monitoring device 43 whether or not the sound quality of the uplink and the downlink is abnormal.

FIG. 2 is a flowchart showing a process of narrowing down an abnormal portion according to an embodiment of the present invention. These figures 1
A description will be given of the process of narrowing down an abnormal portion according to an embodiment of the present invention with reference to FIG.

When an abnormal call quality occurs, first, the sound quality from the turning point A is checked by the sound monitor 43 (FIG. 2).
In step S1), when the call quality becomes normal (step S2 in FIG. 2), it is determined that a trouble has occurred between the ID terminal 5 and the wireless base station 1 (step S3 in FIG. 2). In this case, when the tester inputs from the monitoring and control console 44 that the call quality is normal, the not-shown determination unit causes the above-described determination result to be displayed on a not-shown display unit.

If the call quality is not normal (step S2 in FIG. 2), the sound quality from the turning point B is checked by the voice monitor 43 (step S4 in FIG. 2), and if the call quality is normal (step S5 in FIG. 2). ), It is determined that a failure has occurred in the transmission device 3, 41 or the transmission path 100 (FIG. 2).
Step S6). In this case, when the tester inputs from the monitoring and control console 44 that the call quality is normal, the determination unit displays the above determination result on the display unit.

If the call quality does not become normal (step S5 in FIG. 2), the sound quality from the turning point C is checked by the voice monitor 43 (step S7 in FIG. 2), and if the call quality becomes normal (step S8 in FIG. 2). ), It is determined that a trouble has occurred in the exchange 42 (step S9 in FIG. 2). If the call quality is not normal (step S8 in FIG. 2), it is determined that a trouble has occurred in another network 6 (step S8 in FIG. 2).
10). In this case, when the tester inputs that the call quality is normal or abnormal from the monitoring control console 44,
The determination unit causes the display unit to display the above determination results.

As described above, when an abnormal sound quality occurs during a call, the sound quality on the call line in the wireless base station 1 is monitored via the monitor device 23 in the wireless device 2 without interrupting the call. By checking on the voice monitoring device 43 in the communication center 4, depending on the sound quality at each of the turning points A to C, including the sound quality on the line around the exchange 3 on the monitoring center 4 side, Can be used to narrow down whether an abnormality has occurred.

Therefore, when the above-mentioned radio base station 1 is used, it is possible to efficiently narrow down the abnormal part and investigate the cause when the sound quality abnormality occurs, in a short period of time efficiently.
Since the maintainability can be particularly improved, the practical value is extremely high.

[0027]

As described above, according to the present invention, a radio base station including a radio apparatus for performing radio transmission and reception with a portable telephone terminal, and monitoring of occurrence of a fault on a transmission line connected to the radio base station. In a digital car / cell phone system consisting of a monitoring center that monitors the line during a call in response to an external instruction, and transmits a signal to be monitored to the monitoring center, it is possible to monitor when a line error occurs during a call. It is possible to narrow down the error occurrence section without disconnecting the line, and it is possible to quickly find and solve the error occurrence section.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration of a digital car / cell phone system according to one embodiment of the present invention.

FIG. 2 is a flowchart showing a process of narrowing down an abnormal portion according to an embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 radio base station 2 radio device 3, 41 transmission device 4 monitoring center 5 ID terminal 6 other networks 21-1 to 21-n transceiver 22 control unit 23 monitoring device 23 a communication channel selection unit 23 b codec unit 42 switching unit 42 a synthesis unit 43 voice monitoring device 44 monitoring and control console AC turning point

Claims (6)

[Claims] 1. A digital car / mobile comprising a radio base station including a radio device for performing radio transmission / reception with a mobile phone terminal, and a monitoring center connected to the radio base station and monitoring the occurrence of a fault on a transmission line. In the telephone system, the wireless device includes a monitor for monitoring a line during a call in response to an external instruction, and a transfer unit for transferring a signal monitored by the monitor to the monitoring center. Digital car / mobile phone system. 2. The digital car / mobile phone system according to claim 1, wherein said transfer means is configured to connect to said monitoring center through at least one of a dedicated line and a telephone line. 3. The digital car / mobile phone system according to claim 1, wherein said monitoring center includes a voice monitoring means for outputting a signal transferred from said transfer means as a voice signal. . 4. The monitoring center includes an exchange for switching a call signal to the mobile phone terminal, wherein the audio monitoring means outputs a signal from the transfer means as an audio signal, and at least a preceding and succeeding stage of the exchange. 4. A digital vehicle according to claim 3, wherein the signals respectively turned back are output as audio signals.
Mobile phone system. 5. The monitoring center according to claim 1, wherein the monitoring center is configured to display a monitoring screen indicating a line connection status in the wireless base station in response to an external instruction.
Digital car / mobile phone system according to any one of the above. 6. The monitoring center according to claim 1, further comprising output means for outputting, to said monitor means, an instruction signal for specifying a line under communication monitored by said monitor means in response to an external instruction. A digital car / mobile phone system according to any one of claims 1 to 5.