JP2000091982A - Radio quality deterioration preventing method for cdma mobile radio communication system, and cdma mobile radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the radio quality from deteriorating by continuously monitoring the output information of a mobile device and forcibly stopping the radio communication of faulty mobile device sending an abnormal output automatically or manually by a service engineer if the faulty mobile device is detected. SOLUTION: A base station controller 13 which has received mobile device fault detection alarm signals from base stations 12a to 12n transfers a message to base station maintenance controllers 14a to 14k. The base station maintenance controllers 14a to 14k sends a mobile device fault detection alarm report out to a total maintenance monitor device 19. A base station position information data server 16 retrieves the position of specified base station information and a subscriber characteristic identification information data server 18 retrieves specified subscriber information from a data base and reports it to the total maintenance monitor device 19. After fault information is recorded, the total maintenance monitor device 19 sends a specific MS transmission indication instruction to the base station maintenance controllers 14a to 14k under automatic control or manual control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CDMA mobile radio communication system, and more particularly to the prevention of radio quality deterioration in a CDMA mobile radio communication system by detecting a mobile station whose power control function has failed during system operation and forcibly stopping communication. Method and a CDMA mobile radio communication system.

[0002]

2. Description of the Related Art Conventionally, CDMA (Code Division Multip
le Access) In a mobile radio communication system, since a plurality of signals coexist in the same frequency band, it is necessary to keep the reception levels from all the mobile stations at the base station constant (far-far problem).
Therefore, in order to solve this near-far problem, in a CDMA mobile radio communication system, radio transmission output optimal control (power control) is performed for both the base station and the mobile station.
In order to solve the above problem and maintain the wireless quality in the system constant, when the base station detects an abnormality of a mobile station, it sends a signal to stop the transmission to the mobile station and sends a signal to stop the transmission. Stopping or suppressing the output has been performed. (JP-A-7-38452)

However, the prior art has the following problems. If there is a mobile station that has a maximum output due to a failure in the wireless transmission output optimal control (power control) function, there is a possibility that the radio quality in the system will be significantly degraded.

[0003] The reason is that when the failed mobile station transmits at the maximum output near the base station, the base station cannot sufficiently receive from other mobile stations, and the distance problem cannot be solved. There was a point.

When the base station detects an abnormality in a mobile station, the base station transmits a signal for stopping transmission to the mobile station to stop or suppress radio wave output. If there is a defect in the part, there is a problem that communication is continued with an abnormal output.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to constantly monitor whether or not a mobile station in which a radio transmission output optimal control function has failed is present in the system. In this case, the base station forcibly stops the transmission output of the failed mobile station, and provides a radio quality degradation prevention method for a CDMA mobile radio communication system and a CDMA mobile radio communication system that prevent radio quality degradation in the system. is there.

[0006]

The gist of the present invention is a method of preventing radio quality deterioration in a CDMA mobile radio communication system, wherein the output information of a mobile station is continuously monitored and abnormal output is provided. A method for preventing radio quality degradation in a CDMA mobile radio communication system, wherein, when a faulty mobile device that emits an error is detected, the radio transmission of the mobile device is forcibly stopped automatically or manually by a maintenance person. Exists. The gist of the present invention described in claim 2 is that
The base station issues a transmission stop command to the failed mobile device, checks whether the reception signal from the failed mobile device has stopped, and determines that the reception signal from the failed mobile device has not stopped. Recognizing that it is in a state where it is impossible to stop the wave due to a malfunction of the radio wave stop processing unit of the failed mobile device,
2. The method for preventing radio quality deterioration in a CDMA mobile radio communication system according to claim 1, wherein a radio wave transmitted from said base station to said failed mobile station is forcibly stopped. The gist of the present invention described in claim 3 is that
The receiving unit receives the spread signals transmitted from all the mobile devices via the antenna, and the despreading unit performs a despreading process on the received spread signals with a spreading code assigned to each mobile device, and sends the signals to the SIR detection unit. SIR for each spreading code, an Eb / Io calculation unit calculates Eb / Io of each mobile station, and an error detection unit detects an error between the SIR or Eb / Io and a control target value. The mobile station output monitoring unit determines whether the error is within an allowable range, and determines that the mobile station has a failure if the error continues outside the allowable range for a certain period of time or longer. The mobile station fault detection alarm report is sent, according to claim 1 or 2,
The present invention relates to a method for preventing radio quality deterioration in a CDMA mobile radio communication system. The gist of the present invention according to claim 4 is that the base station control device transfers the mobile station failure detection alarm report to a base station maintenance control device, and the base station maintenance control device transmits the mobile station failure detection alarm report. When received normally, a mobile station failure detection alarm reception completion report is transmitted to the base station controller, and the base station controller transmits the mobile station failure detection alarm reception completion report notified from the base station maintenance controller. Forwarded to the base station, the base station maintenance control device sends the mobile station failure detection alarm report to an integrated maintenance monitoring device, and the integrated maintenance monitoring device receives the mobile station failure detection alarm report, Sending a base station location inquiry request to the information data server, sending a subscriber information inquiry request to the subscriber unique identification information data server,
The base station position information data server searches the database for the position from the designated base station information and reports detailed position information to the integrated maintenance monitoring device in a base station position report,
The subscriber unique identification information data server searches the database for subscriber information such as an address, a name, a contact and a telephone number from the designated subscriber unique identification information, and reports the subscriber information to the integrated maintenance monitoring device in a subscriber information report. Upon receiving the base station location report and the subscriber information report, the integrated maintenance monitoring device displays a mobile station failure detection, the base station location information, and the subscriber information together with a warning sound on a console screen. By transmitting the designated MS transmission stop command from the integrated maintenance monitoring device to the base station maintenance control device from the integrated maintenance monitoring device by automatic control or manual control by the maintenance person, Transfer to the station maintenance control device and the base station control device and notify the base station;
4. The radio quality degradation in a CDMA mobile radio communication system according to claim 1, wherein the base station that has received the S transmission stop command issues a transmission stop command to a designated mobile station. Prevention method. The gist of the present invention according to claim 5 is that the base station controller transfers the mobile station failure detection alarm report to a base station maintenance controller, and the base station maintenance controller transmits the mobile station failure detection alarm report. If received normally, a mobile station failure detection alarm reception completion report is transmitted to the base station controller,
The base station controller transfers the mobile station failure detection alarm reception completion report notified from the base station maintenance controller to the base station, and the base station maintenance controller transmits the mobile station failure detection to an integrated maintenance monitoring device. After sending an alarm report, the integrated maintenance monitoring device sends a base station location inquiry request to the base station location information data server after receiving the mobile station failure detection alarm report, and sends the subscriber information to the subscriber unique identification information data server. An inquiry request is sent, and the base station location information data server searches the database for the location from the designated base station information and reports detailed location information to the integrated maintenance and monitoring device in a base station location report, The unique identification information data server searches the database for subscriber information such as address, name, contact information and telephone number from the designated subscriber unique identification information. When the base station position report and the subscriber information report are received, the integrated maintenance monitoring apparatus reports the mobile station failure detection and the base station position information to the console screen when the base station position report and the subscriber information report are received. And the subscriber information are displayed together with a warning sound to notify the maintenance person, and a designated MS transmission stop command is sent to the base station maintenance control device from the integrated maintenance monitoring device by automatic control or manual control by the maintenance person. Transmits the designated MS transmission stop command to the base station maintenance control device and the base station control device, notifies the base station, and receives the designated MS transmission stop command, the base station receives the designated MS transmission stop command. 4. A method for preventing radio quality degradation in a CDMA mobile radio communication system according to claim 1, wherein a transmission stop command is issued to the mobile station. The gist of the present invention according to claim 6 is that the base station controller transfers the mobile station failure detection alarm reception completion report notified from the base station maintenance controller to the base station, and sets the base station. 6. The system according to claim 1, wherein when the timer for waiting for the reception completion report of the mobile station failure detection alarm times out, retransmission is performed for the number of retries individually set in the parameter.
In which the radio quality is prevented from deteriorating in the CDMA mobile radio communication system. The gist of the present invention according to claim 7, wherein the base station that has received the designated MS transmission stop command issues a transmission stop command to a designated mobile station, and if the transmission cannot be stopped, the integrated maintenance management device Forcibly instructs the base station to release the radio link resources used for communication with the mobile device, forcibly releases communication with the specified mobile device, and the integrated maintenance management device 2. A transmission stop confirmation report is transmitted to the base station control device and the base station maintenance control device when the release is confirmed, and the transmission stop confirmation report is notified to the integrated maintenance monitoring device.
6. A method for preventing radio quality deterioration in a CDMA mobile radio communication system according to any one of the above (1) to (6). Claim 8
The gist of the present invention resides in a storage medium in which a program capable of executing a radio quality deterioration preventing method in a CDMA mobile radio communication system according to any one of claims 1 to 7 is described. The gist of the present invention according to claim 9 is a CDMA mobile radio communication system for monitoring a mobile station in a system, wherein a recording means for detecting a failed mobile station in real time and forcibly stopping radio transmission. And a search means for searching the recording means as needed.
According to a tenth aspect of the present invention, in the CDMA system according to the ninth aspect, subscriber information, a failure detection time, and a failure detection location are simultaneously recorded in the recording means.
Exists in mobile radio communication systems. The gist of the present invention described in claim 11 is a CDMA mobile radio communication system for monitoring a mobile station in a system, wherein the maintenance information is controlled and monitored by an operation of a maintenance person and instruction information is transmitted to all apparatuses in the system. An integrated maintenance monitoring device, a plurality of mobile devices that are power-controlled in the system, a base station connected to the mobile device via a wireless line, a base station maintenance control device that performs maintenance control on each base station, A base station control device for exchanging information between the base station maintenance control device and the base station, and a base station position information data server which owns a database of the positions of all base stations operating in the system A failure record data server that records base station failure information and mobile device failure information; Characterized in that an information data server, CDM
A exists in a mobile radio communication system.

[0007] In the present invention, "SIR" refers to Si
gnal to Interference Ratio.

In the present invention, “Eb / Io” means an energy-to-interference ratio per bit.

In the present invention, “MS” means Mobile Stati.
means on (mobile).

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, the CDMA mobile radio communication system according to the present embodiment includes a base station controller 13, base stations 12a to 12n, base station maintenance controllers 14a to 14k, mobile stations 11a to 11m, and base station positions. An information data server 16, a failure record data server 17, a subscriber unique identification information data server 18, and an integrated maintenance monitoring device 19 are schematically configured.

The mobile stations 11a to 11m are connected to base stations 12a to 1
2n is connected with a wireless line, and signals are transmitted and received by the CDMA wireless system. Each base station 12a-12n
Is connected to the base station controller 13. The system has a plurality of base station controllers 13, and each base station controller 13 has a base station maintenance controller 14a to 14b.
14k is connected to perform maintenance control for each base station.

The base station maintenance control devices 14a to 14k
The LAN 15 is connected to a network represented by a cal Area Network 15 (hereinafter, referred to as a LAN). The LAN 15 has a base station position information data server 16, a failure record data server 17, a subscriber unique identification information data server 18, an integrated maintenance monitor. The apparatus 19 is connected, and serves as recording means for each piece of information and retrieval means for the recorded information. A console 20 for maintenance personnel is connected to the integrated maintenance monitoring device 19, so that necessary maintenance monitoring control can be performed and various maintenance information in the present system can be obtained.

The base station position information data server 16 stores a CD
It has a database of the positions of all base stations operating in the MA mobile radio communication system and owns it, and can provide the position information of the designated base station individually requested from another device on the LAN 15.

The failure recording data server 17 is a data server for recording base station failure information and mobile station failure information. In the present invention, the failure recording data server 17 is an apparatus for recording subscriber information and location information of a failed mobile station. is there. The subscriber unique identification information data server 18 is a database in which the personal information of each subscriber is linked to the mobile device unique identification information, and the personal information (address, name, name, etc.) is obtained from the designated unique identification information individually requested from another device. Contact information, phone numbers, etc.).

The integrated maintenance monitoring device 19 appropriately controls all the devices connected to the LAN 15, and the purpose of the present invention is to provide a “mobile control device in which the radio transmission output optimal control (power control) function has failed” in the system. Is constantly monitored for the presence of a mobile terminal, and if it is present, the transmission output of the failed mobile station is stopped to prevent the deterioration of the radio quality in the system. "

The maintenance person 20 can operate the maintenance person's console 20 as needed to search for the failure information recorded in the failure record data server 17.

FIG. 2 is a control block diagram of a base station receiving system. The basic operation is as follows. The antenna 21 is connected to the receiving unit 22 and receives spread signals transmitted from all mobile devices. The despreading unit 23 despreads the received signal using a spreading code assigned to each mobile station.
The SIR detector 24 detects the SIR for each spreading code, and the Eb / Io calculator 25 calculates the Eb / Io of each mobile station.
Is calculated, and data obtained from these received signals (each S
The IR or each Eb / Io) is delivered to the error detection unit 26, and detects an error between the calculated SIR or each Eb / Io and the control target value.

The mobile station output monitoring unit 27 determines whether each of the detected errors is within an allowable range. At this time, if the out-of-tolerance case continues for a certain period of time, a mobile station failure detection alarm signal is sent to the higher-level base station maintenance control device.

FIG. 3 is a flow chart showing a process from sending an error signal to a mobile station failure detection alarm. It is assumed that x mobile stations are simultaneously communicating with the corresponding base station.
The spread signal transmitted from each mobile device is received by the base station,
After detecting error signals δ1 to δx from each SIR or each Eb / Io, processing is performed in this error detection flow.

In a flow 32, a counter i is set to one.

In a flow 33, it is determined whether the absolute value of the error signal δi is equal to or smaller than the control target allowable value α.

At this time, if it is within the allowable range, the flow proceeds to step 34 where the counter i is incremented.

In a flow 35, it is determined whether or not i exceeds x. If not, the process is repeated from the flow 33.

Here, it is assumed that the flow 33 detects that the error signal δi has exceeded the allowable range α.

If it exceeds the allowable range α, the flow 36
Transition to.

Although the power control unit of the base station continuously instructs the corresponding mobile station to reduce the transmission output, it is determined whether the allowable range has been exceeded for β times continuously. Specifically, the variation of | δi | with respect to the corresponding mobile station for β times is checked, and when it is determined that the output is not reduced despite the environment in which the transmission output can be reduced, the allowable range is continuously exceeded β times. judge.

When it is determined that the error signal δi has exceeded the allowable range α consecutively β times, a mobile station failure detection alarm is sent to the higher-level base station maintenance control device in a flow 37. The mobile station failure detection alarm signal is added with the unique identification information of the mobile station that has detected the output abnormality and the identification information of the detected base station. Thereafter, the flow makes a transition to the flow 38.

If it is not determined that the error signal δi has exceeded the allowable range α continuously β times, the flow shifts to the flow 34.

If the counter i exceeds x in the flow 35, an error signal at the next timing is requested in a flow 38, and the flow goes to the flow 31.

Hereinafter, the above flow is continued.

FIG. 4 shows the occurrence of a mobile station failure detection alarm.
4 shows a control sequence up to the stop of mobile device transmission. The base station controller receiving the mobile station failure detection alarm report from the base station transfers the message to the base station maintenance controller.

When the base station maintenance control device receives the corresponding message normally, it transmits a mobile station failure detection alarm reception completion report to the base station control device.

The base station controller transfers the mobile station failure detection alarm reception completion report notified from the base station maintenance controller to the base station. At this time, if the mobile station failure detection alarm reception completion report waiting timer set at the base station times out, retransmission is performed for the number of retries individually set in the parameter.

The base station maintenance control device sends a mobile station failure detection alarm report to the integrated maintenance monitoring device.

After receiving the mobile station fault detection alarm report, the integrated maintenance monitoring device sends a base station position inquiry request to the base station position information data server, and sends a subscriber information inquiry request to the subscriber unique identification information data server. .

The base station location information data server searches the database for the location from the designated base station information, and reports more specific location information to the integrated maintenance monitoring device in a base station location report.

The subscriber unique identification information data server retrieves the subscriber information (address, name,
Contact information, telephone number, etc.) are retrieved from the database and reported to the integrated maintenance monitoring device in the subscriber information report.

When both the base station position report and the subscriber information report are received, the integrated maintenance monitoring device displays on the console screen the detection of the mobile station failure together with a warning sound, and notifies the maintenance person. At this time, both the base station location information and the subscriber information are displayed.

At the same time, the integrated maintenance monitoring device sends a failure information recording instruction message to the failure recording server.

The fault record data server records the base station position information and the subscriber information notified by the fault record command together with the time stamp.

After the recording of the fault information is completed, a designated MS transmission stop command is transmitted from the integrated maintenance monitoring device to the base station maintenance control device by automatic control or manual control by a maintenance person.

This message is transferred between the base station maintenance control device and the base station control device, and is notified to the base station.

The base station that has received the designated MS transmission stop command issues a transmission stop command to the corresponding mobile station communicating therebelow, and confirms whether the reception signal from the corresponding mobile station has stopped.

The confirmation method at this time is, firstly, "confirmation of whether or not the synchronization with the relevant mobile device on the radio has been lost for a certain period of time" and secondly, "confirmation of Eb / Io of the relevant mobile device for a certain period of time" Confirmation as to whether or not detection is possible ".

When the stop of the received signal from the mobile station cannot be confirmed, it is recognized that the wave cannot be stopped due to a failure of the radio wave stop processing section of the mobile station, and the signal is transmitted from the base station used for communication. Forcibly stop existing radio waves.

The reason why the base station can forcibly stop the mobile station from communicating is that, in wireless communication, transmission from the mobile station to the base station and transmission from the base station to the mobile station are always performed. Each other monitors the radio waves transmitted by each other and recognizes whether communication is continuing. However, when transmission from the base station is suddenly stopped, the mobile device recognizes that communication is not continued and performs a recovery operation, and if recovery is not possible, communication with normal disconnection processing is performed. Can be stopped. Therefore, even if the radio wave stop processing unit in the mobile device is out of order and the stop operation cannot be performed normally in response to the radio wave stop instruction notified from the base station, the transmission from the base station is forcibly stopped. The radio wave can be stopped by the disconnection processing. Furthermore, since the fact that communication can be started is recognized as having no problem in the communication control processing unit, it can be determined that the normal disconnection process can be normally performed.

When the base station confirms that the transmission has been stopped or has confirmed that it has been forcibly released, it transmits a transmission stop confirmation report.

This message is transferred to the base station controller and the base station maintenance controller, and is notified to the integrated maintenance monitoring device.

After receiving the transmission stop confirmation report, the integrated maintenance monitoring device transmits a forced transmission stop history recording command to the failure record data server.

After receiving this command, the fault record data server
Record that the forced transmission has been stopped for the relevant mobile station. All of these recorded data can be easily searched by maintenance personnel.

The CDMA mobile radio communication system according to the embodiment is configured as described above, and has the following effects. In a CDMA mobile radio communication system, how to reduce interference waves and stabilize radio quality in a base station in which a large number of mobile stations are accommodated is a major issue. Can forcibly stop the corresponding mobile station from transmitting, and can prevent the deterioration of the radio quality by appropriately reducing the interference wave.

In the CDMA mobile radio communication system, an optimum transmission output control (power control) function is always provided to solve the near-far problem, and the SIR and Eb / I of each mobile station necessary for power control are provided.
o is always calculated, but in the present invention, S
By constantly monitoring the IR or Eb / Io to detect a mobile station having a transmission abnormality, a dedicated new detection circuit is not required, so that the apparatus configuration does not need to be enlarged.

In addition, a base station position information data server, a failure record data server, a subscriber unique identification information data server, and the like can be searched and these can be searched, so that a quick response can be made in the event of a failure.

[0054]

Since the present invention is configured as described above, the following effects can be obtained. The first effect is CDM
A It is to be able to prevent radio quality degradation in a mobile radio communication system. The reason is that in the case of a CDMA mobile radio communication system, how to reduce interference waves and stabilize radio quality in a base station accommodating many mobile stations is a major problem. Is detected, it is possible to forcibly stop the transmission of the mobile device, and it is possible to accurately reduce the interference wave.

The second effect is that, since a new dedicated detection circuit is not required, the device configuration does not need to be increased. The reason is that, in a CDMA mobile radio communication system, a transmission output optimum control (power control) function is always provided in order to solve the near-far problem, and SIR and Eb of each mobile station required for power control are required.
/ Io is always calculated, but in the present invention, by constantly monitoring the SIR or Eb / Io of each mobile device,
This is because a mobile device having a transmission error can be detected.

The third reason is that when the failure of the mobile device is confirmed, the mobile device can be released quickly. The reason is that a mobile station can be quickly identified by searching databases such as a base station position information data server, a failure record data server, and a subscriber unique identification information data server.

[Brief description of the drawings]

FIG. 1 is a network configuration diagram of a CDMA mobile radio communication system according to an embodiment of the present invention.

FIG. 2 is a control block diagram of a base station receiving system of FIG. 1;

FIG. 3 is a flowchart for detecting a fault alarm in FIG. 1;

FIG. 4 is a control sequence diagram of FIG.

[Explanation of symbols]

 11a to 11m Mobile device 12a to 12n Base station 13 Base station controller 14a to 14k Base station maintenance and monitoring device 15 LAN 16 Base station location information data server 17 Fault recording data server 18 Subscriber unique identification information data server 19 Integrated maintenance and monitoring device Reference Signs List 20 Operator console 21 Antenna 22 Receiver 23 Despreading unit 24 SIR detecting unit 25 Eb / Io calculating unit 26 Error detecting unit 27 Mobile unit output monitoring unit

Continued on the front page F-term (reference) 5K022 EE02 EE11 EE31 5K042 AA06 AA08 BA08 DA04 DA19 EA01 FA11 HA13 JA01 LA06 NA01 5K067 AA03 AA26 CC10 DD17 DD20 DD26 DD27 DD43 DD44 EE02 EE10 EE16 FF18 FF20 H11 GG20 JJ66 LL01 LL05 LL14

Claims (11)

[Claims] 1. A method for preventing radio quality deterioration in a CDMA mobile radio communication system, comprising: continuously monitoring output information of a mobile device; detecting a faulty mobile device having an abnormal output; CDM characterized by forcibly stopping wireless transmission of said mobile device by manual control by a maintenance person.
A: A method for preventing radio quality deterioration in a mobile radio communication system. 2. A base station issues a transmission stop command to the failed mobile station, confirms whether a reception signal from the failed mobile station has stopped, and stops the reception signal from the failed mobile station. When it cannot be confirmed, it recognizes that it is in a state where it is impossible to stop the wave due to a failure of the radio wave stop processing unit of the failed mobile device, and forcibly transmits the radio wave transmitted from the base station to the failed mobile device. The method for preventing radio quality deterioration in a CDMA mobile radio communication system according to claim 1, wherein the method is stopped. 3. A receiving section receives spread signals transmitted from all mobile stations via an antenna, and a despreading section despreads the received spread signals by a spreading code assigned to each mobile station. The SIR detector detects the SIR for each spreading code, the Eb / Io calculator calculates the Eb / Io of each mobile station, and the error detector calculates the SIR or the Eb / Io and the control target value. The mobile station output monitoring unit determines whether the error is within the allowable range, and determines that the mobile station has a failure if the error continues to be outside the allowable range for a predetermined time or more. The mobile station fault detection alarm report is sent to the base station controller of any one of claims 1 to 3, wherein the CDM is transmitted.
A: A method for preventing radio quality deterioration in a mobile radio communication system. 4. The base station control device transfers the mobile station failure detection alarm report to a base station maintenance control device, and the base station maintenance control device normally receives the mobile station failure detection alarm report, A mobile station failure detection alarm reception completion report is transmitted to the base station controller, and the base station controller transfers the mobile station failure detection alarm reception completion report notified from the base station maintenance controller to the base station. The base station maintenance control device sends the mobile station failure detection alarm report to an integrated maintenance monitoring device, and the integrated maintenance monitoring device receives the mobile station failure detection alarm report, and then sends the base station position information data server a base station. Sending a location inquiry request and sending a subscriber information inquiry request to the subscriber unique identification information data server, wherein the base station location information data server The location is retrieved from the database from the information and the detailed location information is reported to the integrated maintenance monitoring device by the base station location report, and the subscriber unique identification information data server reads the address and name from the designated subscriber unique identification information. Subscriber information such as contact information and telephone number is retrieved from the database and reported to the integrated maintenance monitoring device by a subscriber information report, and the integrated maintenance monitoring device compares the base station position report and the subscriber information report. Upon receiving, the maintenance screen is notified to the maintenance person by displaying the mobile station failure detection, the base station position information and the subscriber information together with a warning sound, and the integrated maintenance is performed by automatic control or manual control by the maintenance person. A designated MS transmission stop command is transmitted from the monitoring device to the base station maintenance control device, and the designated MS transmission stop command is transmitted to the base station maintenance control device and the base station control device. The base station that has received the designated MS transmission stop command issues a transmission stop command to a designated mobile station. A method for preventing radio quality deterioration in a CDMA mobile radio communication system according to the above description. 5. The base station, when confirming the transmission stop, transfers a transmission stop confirmation report to the base station controller and the base station maintenance controller to notify the integrated maintenance monitoring device. The method according to any one of claims 1 to 4,
A method for preventing radio quality deterioration in a CDMA mobile radio communication system. 6. The base station controller transfers the mobile station failure detection alarm reception completion report notified from the base station maintenance controller to the base station, and detects a mobile station failure set by the base station. The method according to any one of claims 1 to 5, wherein when an alarm reception completion report waiting timer times out, retransmission is performed for the number of retries individually set in a parameter.
A method for preventing radio quality deterioration in a CDMA mobile radio communication system. 7. The base station that has received the designated MS transmission stop command issues a transmission stop command to the designated mobile station. If the transmission cannot be stopped, the integrated maintenance management device forcibly moves the mobile station. Instruct the base station to release the radio link resources used for communication with the mobile device, forcibly release the communication with the specified mobile device, when the integrated maintenance management device confirms the forced release, The CD according to any one of claims 1 to 6, wherein a transmission stop confirmation report is transferred to the base station control device and the base station maintenance control device to notify the integrated maintenance monitoring device.
A method for preventing radio quality deterioration in an MA mobile radio communication system. 8. The CD according to claim 1, wherein:
A storage medium in which a program capable of executing a radio quality deterioration prevention method in an MA mobile radio communication system is described. 9. CDMA for monitoring mobile stations in a system
A mobile radio communication system, comprising: recording means for detecting a failed mobile device in real time and forcibly stopping radio transmission, and search means for searching the recording means as needed. CDMA mobile radio communication system. 10. The CDMA mobile radio communication system according to claim 9, wherein said recording means simultaneously records subscriber information, a failure detection time, and a failure detection location. 11. A CDM for monitoring a mobile station in a system.
A mobile radio communication system, comprising: an integrated maintenance monitoring device capable of transmitting and receiving instruction information to all devices in the system, which is maintained and controlled by a maintenance person, and a plurality of mobile devices that are power-controlled in the system. A base station connected to the mobile device via a wireless line, a base station maintenance control device for performing maintenance control on each base station, and a base for transmitting and receiving information between the base station maintenance control device and the base station A station control device, a base station position information data server that has a database of the positions of all base stations operating in the system, and a failure record data server that records base station failure information and mobile device failure information. CDMA mobile communication system characterized by comprising a subscriber unique identification data server in which the personal information of the subscriber is linked to the unique identification information of the mobile station and is made into a database. Communication system.