JP4151070B2 - Corresponding device when the call completion rate drops - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corresponding instrument in lowering a call completion ratio enabling quick respondence in the case that the call completion ratio is lowered without forcing specific load on a maintenance worker. <P>SOLUTION: A wireless network control device 105 arranged between a wireless base station 103 performing wireless communication with a mobile terminal 102 and a mobile exchange station 101 constitutes, for instance, the corresponding instrument in lowering the call completion ratio. The corresponding instrument in lowering the call completion ratio monitors, for instance, the call completion ratio every one minute, when it is a preset value or smaller, a call processing test is carried out, and a suspected test corresponding to sequence generating abnormality is carried to collect necessary data so as to perform recovering processing on the basis thereof when the result is abnormal. Since the result is notified to a maintenance terminal 108 together with collected data, load on the maintenance worker is not only reduced, but also processing up to recovering is made quick. <P>COPYRIGHT: (C)2004,JPO&amp;NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a call completion rate response device corresponding to a decrease in call completion rate, and in particular, a call completion rate for performing a call processing test or performing necessary recovery processing when the call completion rate decreases. The present invention relates to a device for dealing with deterioration.
[0002]
[Prior art]
For example, when a call request is made to a base station from a mobile terminal such as a mobile phone, the request is made by a device that reaches the base station side or the callee side due to radio wave interference or a collision with a signal transmitted from another mobile terminal. May not be recognized. Conversely, if any failure occurs in the device from the caller side to the base station, the call cannot be completed. Therefore, the ratio of completion of outgoing call or incoming call on the mobile terminal side is used as an index representing such a situation as a call completion rate. When the call completion rate decreases, there is a possibility that various devices such as the base station placed between the caller and the callee may fail, so it is necessary to investigate the cause and restore the line state normally. is there.
[0003]
In general, in a wireless network, a plurality of base stations arranged under a base station controller (Base Station Controller) perform wireless communication with individual mobile terminals. For example, each base station has a pseudo mobile terminal, and when the call completion rate decreases, a call is made using this pseudo mobile terminal, and if the call can be normally received, the base station side is normal. Confirming that there is. When the base station cannot recognize the call normally, the maintenance person goes to the base station, collects data with the data collection device for performing failure analysis, and analyzes the failure location. It was. This not only places a heavy burden on the maintenance worker, but also requires the maintenance worker to go to the site where the base station is installed, for example. Therefore, there was a problem that it took a considerable time to deal with the failure.
[0004]
For this reason, a proposal has been made to shorten the processing time until recovery by eliminating the need for a maintenance worker to go to a base station where a failure may occur (for example, Patent Document 1). In this proposal, the maintenance operation terminal requests the base station to collect data via the base station control device according to the instruction of the maintenance person when the call completion rate decreases. The base station transfers the collected data to the base station controller so that the maintenance data is processed by the base station controller that is the host device. In other words, in this proposal, when the maintenance person recognizes that the call completion rate has dropped, the base station collects data using the pseudo mobile terminal from that point, and the base station control Store in the device. The maintenance person further requests the base station controller to end data collection, and the base station controller instructs the base station to end the measurement using the pseudo mobile terminal by the corresponding base station. It was.
[0005]
[Patent Document 1]
JP 2002-044039 A (paragraph 0016, abstract, FIG. 2)
[0006]
[Problems to be solved by the invention]
According to this proposal, it is not necessary for the maintenance worker to go to the corresponding base station, and it is possible to determine whether or not the failure is on the mobile terminal side. However, even in this case, it is necessary for the maintenance worker to recognize the fact that the call completion rate is reduced and to use the maintenance operation terminal to instruct the base station controller to collect data at the base station. is there. Therefore, there is a problem that the maintenance worker must always monitor whether the call completion rate is lowered regardless of day and night, and the burden of the work is still large. In addition, since maintenance workers usually perform various operations in parallel, even if the call completion rate decreases at a certain base station, it is inevitable that it takes some time to recognize this. Thus, there has been a problem that it is difficult to quickly respond until recovery processing is performed when a failure occurs on the base station side. A similar problem occurs when a device other than the base station fails.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to provide a call completion rate reduction response device capable of promptly responding when a call completion rate is reduced without imposing a special burden on a maintenance worker.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, (a) a call completion rate monitoring unit for outgoing calls that monitors a call completion rate at the time of outgoing call as a ratio of messages that have been sent to the number of messages requested by the mobile terminal And (b) call processing test execution means for executing a call processing test consisting of a plurality of sequences when the call completion rate at the time of outgoing call to be monitored by the call completion rate monitoring means at the time of outgoing is lower than a predetermined value; C) a suspicious test execution means for executing a suspicious test corresponding in advance to a sequence determined to be abnormal when it is determined in the call processing test that a specific sequence of the plurality of sequences is abnormal. Is provided in the device for dealing with a decrease in the call completion rate.
[0009]
That is, in the first aspect of the invention, the outgoing call completion rate monitoring means monitors the outgoing call completion rate as a ratio of messages that have been sent to the number of messages that the mobile terminal has requested to send. I am doing so. When the outgoing call completion rate falls below a predetermined value as a monitoring result, the call processing test execution means executes a call processing test consisting of a plurality of sequences. When it is determined in this call processing test that there is an abnormality in a specific sequence among the plurality of sequences described above, the suspicious test execution means executes a suspicion test corresponding to the sequence determined to be abnormal. In this way, in the call completion rate lowering response device, the maintenance operator is not particularly involved to monitor whether or not the outgoing call completion rate is lowered, and when it is lowered, a call processing test is performed, and a plurality of sequences is performed. When it is determined that there is an abnormality in a particular sequence, a suspicious test corresponding to the sequence in which the abnormality is determined in advance proceeds without involvement of the maintenance worker. Therefore, no special burden is imposed on the maintenance worker, and since the suspicious test is executed when the call completion rate decreases, the subsequent recovery work can be performed quickly.
[0010]
In the invention described in claim 2, (a) an incoming call completion rate monitoring means for monitoring an incoming call completion rate as a ratio of messages that have been received with respect to the number of messages that the mobile terminal responded to the read message; (B) Call processing test execution means for executing a call processing test consisting of a plurality of sequences when the incoming call completion rate monitored by the incoming call completion rate monitoring means falls below a predetermined value; ) When it is determined in this call processing test that there is an abnormality in a specific sequence among the plurality of sequences, a suspicion test execution means for executing a suspicion test corresponding in advance to the sequence determined to be abnormal It is provided in a device for dealing with a decrease in call completion rate.
[0011]
In other words, in the invention according to claim 2, the call completion rate monitoring unit at the time of arrival is characterized in that the call completion rate at the time of arrival as a ratio of messages that have been received with respect to the number of messages that the mobile terminal responded to the read message (paging). I try to monitor. When the incoming call completion rate falls below a predetermined value as a monitoring result, the call processing test execution means executes a call processing test consisting of a plurality of sequences. When it is determined in this call processing test that there is an abnormality in a specific sequence among the plurality of sequences described above, the suspicious test execution means executes a suspicion test corresponding to the sequence determined to be abnormal. In this way, in the call completion rate lowering response device, the maintenance operator is not particularly involved to monitor whether or not the incoming call completion rate is lowered, and when it is lowered, a call processing test is performed, and a plurality of sequences are executed. When it is determined that there is an abnormality in a particular sequence, a suspicious test corresponding to the sequence in which the abnormality is determined in advance proceeds without involvement of the maintenance worker. Therefore, no special burden is imposed on the maintenance worker, and since the suspicious test is executed when the call completion rate decreases, the subsequent recovery work can be performed quickly.
[0012]
According to a third aspect of the present invention, (a) a call completion rate monitoring unit for outgoing calls that monitors a call completion rate at the time of outgoing call as a ratio of messages that have been sent to the number of messages requested by the mobile terminal (B) an incoming call completion rate monitoring means for monitoring an incoming call completion rate as a ratio of messages that have been received with respect to the number of messages that the mobile terminal responded to the read message; and (c) these outgoing calls. Call processing test execution for executing a call processing test consisting of a plurality of sequences when the call completion rate calculated from the monitoring results of both the call completion rate monitoring means and the incoming call completion rate monitoring means falls below a predetermined value And (d) when it is determined in this call processing test that there is an abnormality in a specific sequence among the plurality of sequences described above, A suspect test execution means for executing a test is provided during the call completion rate decreased corresponding device.
[0013]
That is, in the invention described in claim 3, the call completion rate monitoring unit at the time of outgoing call monitors the call completion rate at the time of outgoing call as a ratio of messages that have been sent to the number of messages requested by the mobile terminal. I am doing so. The incoming call completion rate monitoring means monitors the incoming call completion rate as a ratio of messages that have been received with respect to the number of messages that the mobile terminal has responded to the read message (paging). When the call completion rate drops below a predetermined value as a monitoring result of both the outgoing call completion rate monitoring means and the incoming call completion rate monitoring means, the call processing test execution means comprises a plurality of sequences. I try to run the test. When it is determined in this call processing test that there is an abnormality in a specific sequence among the plurality of sequences described above, the suspicious test execution means executes a suspicion test corresponding to the sequence determined to be abnormal. In this way, in the call completion rate lowering response device, the maintenance worker is not particularly involved in monitoring whether or not the outgoing call completion rate and the incoming call completion rate are reduced, and if the call completion rate is lowered, a call processing test is performed. When it is determined that there is an abnormality in a specific sequence among a plurality of sequences, the suspicious test corresponding to the sequence determined to be abnormal proceeds in advance without the involvement of the maintenance worker. Therefore, no special burden is imposed on the maintenance worker, and since the suspicious test is executed when the call completion rate decreases, the subsequent recovery work can be performed quickly. Here, the determination of whether or not the call completion rate has fallen below a predetermined value may be made based on a simple average value of the call completion rate at the time of outgoing call and the call completion rate at the time of incoming call. A value obtained by changing may be used as the call completion rate.
[0014]
According to a fourth aspect of the present invention, the call completion rate reduction response device according to any one of the first to third aspects performs a restoration process for improving the call completion rate by a measure corresponding to the result of the suspicious test in advance. Means are further provided.
[0015]
That is, in the invention according to claim 4, the recovery means performs the recovery process for improving the call completion rate by performing the treatment associated with the result of the suspicious test. For this reason, the direct involvement of the maintenance worker can be omitted, and the burden can be reduced and the processing up to the recovery can be speeded up.
[0016]
The invention according to claim 5 further comprises execution result notifying means for notifying the maintenance terminal of the execution result of the suspicious test execution means in the call completion rate reduction response device according to any one of claims 1 to 3. ing.
[0017]
That is, in the invention according to claim 5, since the result is notified to the maintenance terminal at the execution stage of the suspicious test execution means, not only the response at the time when the call completion rate is lowered is accelerated by the automation so far. Since the maintenance worker is involved in the recovery processing, processing other than manual processing is possible, and the processing range is expanded.
[0018]
In the sixth aspect of the invention, in the call completion rate lowering response apparatus according to the fourth aspect, the call completion is performed by adding the data collected by the execution of the suspicious test execution means and the contents of the recovery process of the recovery means as additional information. Maintenance terminal notification means for notifying the maintenance terminal of recovery from the rate drop is further provided.
[0019]
That is, in the invention according to claim 6, the maintenance terminal notification means adds the data collected by the execution of the suspicious test execution means and the contents of the recovery process of the recovery means as additional information to notify the recovery from the decrease in the call completion rate. Therefore, it is easy to confirm the recovery, and it is possible to greatly reduce the labor of the maintenance worker and to speed up the processing until the recovery.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
[0021]
【Example】
Hereinafter, the present invention will be described in detail with reference to examples.
[0022]
FIG. 1 shows an outline of a communication system provided with a call completion rate reduction response device according to an embodiment of the present invention. In this communication system, a mobile switching center 101 is a circuit switching center for a mobile communication network, and plays a role similar to a public switching telephone network (PSTN) in a public telephone network. . Voice signals or data transmitted from each mobile terminal 102 (only one is shown in the figure) are received as radio signals 104 by the corresponding radio base station 103 (only one is shown in the figure). The radio network controller 105 sends out these signals transmitted from the respective radio base stations 103 via a predetermined communication cable 106 to the mobile communication switching center 101 via the communication cable 107. Voice or data sent from a mobile terminal or a fixed telephone (not shown) on the reverse route is sent from the mobile communication switching center 101 to the corresponding radio base station 103 via the radio network controller 105, from here. It is transmitted to the mobile terminal 102.
[0023]
In the communication system provided with the call completion rate reduction response device of the present embodiment, the maintenance terminal 108 uses the maintenance cables 109 to 111, respectively, so that the mobile communication switching center 101, the radio network controller 105, and the radio base station 103 are used. Connected with. The wireless base station 103, the wireless network control device 105, and the mobile communication switching center 101 connected to the maintenance terminal 108 constitute a device that monitors a decrease in the call completion rate. Among these, the wireless network control device 105 constitutes a response device when the call completion rate decreases. The maintenance terminal 108 is notified when the call completion rate is reduced and recovered.
[0024]
FIG. 2 shows the configuration of a device for dealing with a decrease in the call completion rate provided in the wireless network control device. The wireless network control device 105 itself includes a CPU (Central Processing Unit) (not shown), a storage medium such as a magnetic disk storing a control program for performing various controls, a working memory area, and the wireless base station shown in FIG. 103 and the maintenance terminal 108 and a communication control unit for communicating various data. The call completion rate reduction response device is realized by the CPU in the radio network control device 105 executing a control program. The call completion rate monitoring unit 121, test control unit 122, test execution unit 123, data collection Unit 124, recovery processing unit 125, and alarm output unit 126.
[0025]
Here, the call completion rate monitoring unit 121 monitors the call completion rate of outgoing / incoming calls of the mobile terminal 102 shown in FIG. When the fact that the call completion rate is lower than a predetermined value is found, the test control unit 122 is notified of the call completion rate reduction. When the test control unit 122 receives a notification of a decrease in the call completion rate, the test control unit 122 instructs the test execution unit 123 to perform a call processing test. When the execution of the call processing test is instructed, the test execution unit 123 executes the call processing test. When the result of the test shows that there is an abnormality in the call processing, the sequence of the call processing in which the abnormality has occurred is analyzed. The analysis result is notified to the test control unit 122. When the test control unit 122 receives a notification that an abnormality has occurred in a predetermined sequence of call processing, the test control unit 122 specifies the suspicious test corresponding to the corresponding sequence using the suspicious test execution list.
[0026]
FIG. 3 shows an example of the contents of the suspicious test implementation list. The suspicious test execution list 131 divides sequence abnormality (NG) information from “1” to “10”, and indicates the suspicious test that the test control unit 122 identifies as the target of execution corresponding to each of these sequences. ing. For example, when the sequence abnormality information corresponds to “1”, the test control unit 122 identifies the suspicious test “A” as an implementation target. Here, the suspicious test “A” is a loopback test. In the loopback test, the radio network controller 105 forms a loop in the corresponding section (for example, between the mobile terminal 102 and the mobile communication switching center 101) and sends the same signal as the signal at the time of actual call origination. This is monitored to check if an abnormality has occurred.
[0027]
When the sequence abnormality information corresponds to “2”, the test control unit 122 identifies the suspicious test “B” as an implementation target. Here, the suspicious test “B” is a continuity test, and it is checked whether or not the transmission path of the corresponding section is actually continuity. When the sequence abnormality information corresponds to “3”, the test control unit 122 identifies the suspicious test “B” and the suspicious test “C” as the targets to be implemented. Here, the suspicious test “C” is a hardware diagnostic test, which specifically determines whether or not there is a failure in hardware as a device related to signal transmission. As described above, depending on the sequence abnormality information, a plurality of causes of abnormality of one sequence can be considered. In such a case, a plurality of suspicious tests are performed in order to determine the cause of the abnormality. For example, when the sequence abnormality information corresponds to “10”, the test control unit 122 performs the suspect test “D” in addition to the suspect tests “A” and “B”. The suspect test “D” is a resource status check test. In this resource status confirmation test, a check is made as to whether or not necessary resources are used 100%.
[0028]
Returning to FIG. 2, the description will be continued. When the test control unit 122 identifies a suspicious test to be performed using the suspicious test execution list 131 illustrated in FIG. 3, the test control unit 122 instructs the test execution unit 123 to perform the identified suspicious test. The test execution unit 123 performs the instructed suspicion test, and identifies the suspicion from the result. Further, the data collection unit 124 collects data necessary for analyzing the decrease in the call completion rate. Based on this, the recovery processing unit 125 performs recovery processing from a state where the call completion rate is reduced. The alarm output unit 126 notifies the maintenance terminal 108 of the recovery from the decrease in the call completion rate by using the data collected by the data collection unit 124 and the content of the recovery processing performed by the recovery processing unit 125 as additional information.
[0029]
FIG. 4 shows a flow of processing operation of the apparatus for dealing with a decrease in the call completion rate. The flow of processing of the apparatus for dealing with a decrease in call completion rate will be described with reference to FIGS. The call completion rate monitoring unit 121 in the call completion rate lowering response device performs periodic monitoring of the call completion rate for call processing when the mobile terminal 102 makes / receives a call (step S201: Y). Here, the call completion rate in the case of outgoing call refers to the ratio when the total number of messages that have been sent is used as the numerator and the total number of messages that have been requested to be sent is used as the denominator. The call completion rate in the case of an incoming call refers to the ratio of the incoming call completion message in response to a message (paging) read by the mobile terminal. There are two types of call completion rates, one for outgoing calls and one for incoming calls. Accordingly, the call completion rate may be calculated by adding both call completion rates and dividing by two, or depending on the system, the total call completion rate may be monitored by giving a certain weight to both. In this embodiment, the call completion rates of both are added and divided by 2, and an average value is calculated every minute.
[0030]
When the call completion rate determined in this way falls below 30% (step S202: Y), the test control unit 122 is notified of a decrease in the call completion rate. The test control unit 122 instructs the test execution unit 123 to perform a call processing test, and the call processing test is executed (step S203).
[0031]
When it is determined from the test result that the test result is abnormal (NG) (step S204: Y), the test execution unit 123 notifies the test control unit 122 of which sequence of call processing an abnormality has occurred. Based on this, the test control unit 122 identifies the suspicious test to be performed from the suspicious test execution list 131 shown in FIG. 3 (step S205). Then, it instructs the test execution unit 123 to execute the corresponding suspicious test. Based on this, the test execution unit 123 executes the corresponding suspicious test (step S206). For example, when the sequence abnormality information corresponds to “3”, the test control unit 122 identifies the suspicious tests “B” and “C” as implementation targets, so the test execution unit 123 performs the continuity test and the hardware diagnostic test. Will be executed. The test execution unit 123 identifies the cause of the decrease in the call completion rate from the test result. Based on this, the data collection unit 124 collects data necessary for analyzing the decrease in the call completion rate (step S207).
[0032]
Based on the collected data, the recovery processing unit 125 performs recovery processing from a state where the call completion rate is reduced (step S208). For example, if an abnormality is detected by the hardware diagnosis result of the suspicious test “C”, the data collection unit 124 collects data about the hardware, and the recovery processing unit 125 uses the data as a basis. Perform a reset process for the suspected hardware.
[0033]
After the above recovery processing is performed, the alarm output unit 126 adds the data collected by the data collection unit 124 and the content of the recovery processing performed by the recovery processing unit 125 as additional information and calls the maintenance terminal 108. The recovery from the completion rate drop is notified (step S209). As a result, a series of processing of the apparatus for dealing with a decrease in the call completion rate ends. Then, the call completion rate lowering response device returns to step S201 again to monitor the call completion rate (return). The same applies hereinafter.
[0034]
As described above, in the present embodiment, the maintenance terminal 108 receives a report that the call completion rate has decreased in a subsequent report and that this has been recovered. Therefore, even when the person in charge of the maintenance terminal 108 is devoted to other work, a measure for reducing the call completion rate is automatically performed, and the processing time until recovery is shortened. . Of course, if the recovery process is not performed successfully due to an unexpected cause, if the report is sent to the maintenance terminal 108, the normal recovery process can be performed while reducing the burden on the person in charge. It becomes possible for a maintenance person to respond flexibly to the occurrence of a failure that cannot be handled. At this time, for example, the maintenance person uses the maintenance cables 109 to 111 to collect necessary data from the corresponding apparatus, or sends a predetermined control signal to them to execute the recovery process. It is also possible to go to the corresponding device as needed to perform the recovery process.
[0035]
<Possibility of modification of the invention>
[0036]
In the embodiment described above, the call completion rate is processed as a single value. However, the call completion rate for outgoing calls and the call completion rate for incoming calls are set to different values, and call processing tests and recovery processing are individually performed. In addition, a report to the maintenance terminal 108 may be performed. Depending on the system, only one call completion rate, or between the mobile terminal 102 and the radio base station 103, the monitoring target is limited and the call completion rate is checked to perform a call processing test and recovery processing. It is also possible.
[0037]
In the embodiment, the call completion rate lowering response device is provided inside the wireless network control device 105, because this is mainly based on the premise that there is a doubt about a communication card (not shown) of the wireless network control device 105. . In a communication system in which the radio base station 103 and the mobile communication switching center 101 cause doubts about a decrease in the call completion rate, a device for responding to a decrease in the call completion rate is incorporated therein, and the result is the maintenance cable 111 or the maintenance cable. The maintenance terminal 108 may be notified through 109. In addition, the call completion rate lowering response device may be arranged as an independent device inside any communication system.
[0038]
Furthermore, in the embodiment, after the restoration process for improving the call completion rate is performed, the result is notified to the maintenance terminal together with the collected data. However, the restoration process itself may be executed by the maintenance terminal. Also in this case, the suspicious test has already been performed and necessary data has been collected, so that the maintenance staff can quickly respond to the recovery process.
[0039]
【The invention's effect】
As described above, according to the first aspect of the present invention, the call completion rate monitoring means at the time of outgoing call is a ratio of the messages that have been sent to the number of messages that the mobile terminal has requested to send. Since the call completion rate is monitored, it is possible to quickly detect a failure in call processing after the base station without imposing a special burden on the maintenance worker. In addition, since the suspicious test is executed when the call completion rate decreases, the subsequent recovery work can be performed quickly. Therefore, for example, it is possible to recover from a state in which the call completion rate is lowered before receiving a complaint from a customer.
[0040]
According to the second aspect of the present invention, the call completion rate monitoring unit at the time of arrival is a call completion upon arrival as a ratio of messages that have been received with respect to the number of messages that the mobile terminal has responded to the read message (paging). Since the rate is monitored, it is possible to quickly detect a failure in call processing from the calling party to the base station without imposing a special burden on the maintenance worker. In addition, since the suspicious test is executed when the call completion rate decreases, the subsequent recovery work can be performed quickly. Therefore, for example, it is possible to recover from a state in which the call completion rate is lowered before receiving a complaint from a customer.
[0041]
Further, according to the invention described in claim 3, since call completion rate monitoring means for both outgoing call completion rate monitoring means and incoming call completion rate monitoring means are provided, both outgoing and incoming call arrival times are provided. By monitoring the call completion rate, it is possible to automate up to a suspicious test corresponding in advance to a sequence in which there is an abnormality without involvement of a maintenance worker. Therefore, a call processing failure can be detected quickly. In addition, since the suspicious test is executed when the call completion rate decreases, the subsequent recovery work can be performed quickly. Therefore, for example, it is possible to recover from a state in which the call completion rate is lowered before receiving a complaint from a customer.
[0042]
According to the invention described in claim 4, since the recovery means performs the recovery process for improving the call completion rate by performing the treatment associated with the result of the suspicious test, the maintenance operator is directly involved. It can be omitted to reduce the burden and speed up the process until recovery.
[0043]
Furthermore, according to the invention described in claim 5, since the execution result notification means for notifying the maintenance terminal of the execution result of the suspicious test execution means is further provided, the response to the case where the call completion rate is lowered by the automation up to that time In addition to speeding up, the maintenance worker can be involved in the recovery process, so that various processes other than the standardized process are possible, and the processable range is expanded.
[0044]
According to the sixth aspect of the present invention, the data collected by the execution of the suspicious test execution means and the contents of the recovery process of the recovery means are added as additional information to notify the maintenance terminal of the recovery from the decrease in the call completion rate. Therefore, it is easy to confirm the recovery performed, and it is possible to greatly reduce the labor of the maintenance worker and to speed up the processing up to the recovery.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram showing an outline of a communication system including a call completion rate reduction response device according to an embodiment of the present invention.
FIG. 2 is a block diagram showing the configuration of a call completion rate reduction response device provided in the wireless network control device of the embodiment;
FIG. 3 is an explanatory diagram showing an example of the contents of a suspicious test implementation list.
FIG. 4 is a flowchart showing the flow of processing operation of the apparatus for dealing with a decrease in call completion rate according to this embodiment.
[Explanation of symbols]
101 Mobile communication switching center
102 Mobile terminal
103 radio base station
105 Wireless network control device
108 Maintenance terminal
121 Call completion rate monitoring unit
122 Test control unit
123 Test execution part
124 Data collection unit
125 Recovery processing department
126 Alarm output section
131 Suspicious examination list

Claims (6)

An outgoing call completion rate monitoring means for monitoring an outgoing call completion rate as a ratio of a message that has been sent to a number of messages requested by a mobile terminal;
Call processing test execution means for executing a call processing test consisting of a plurality of sequences when the call completion rate at the time of outgoing call of the monitoring target of the outgoing call completion rate monitoring means falls below a predetermined value;
When it is determined in the call processing test that there is an abnormality in a specific sequence of the plurality of sequences, a suspicious test execution means for executing a suspicion test corresponding to the sequence determined to be abnormal is provided. A device for dealing with a decrease in call completion rate, characterized in that An incoming call completion rate monitoring means for monitoring an incoming call completion rate as a ratio of messages that have been received with respect to the number of messages that the mobile terminal responded to the read message;
Call processing test execution means for executing a call processing test consisting of a plurality of sequences when the incoming call completion rate monitored by the incoming call completion rate monitoring means falls below a predetermined value;
When it is determined in the call processing test that there is an abnormality in a specific sequence of the plurality of sequences, a suspicious test execution means for executing a suspicion test corresponding to the sequence determined to be abnormal is provided. A device for dealing with a decrease in call completion rate, characterized in that An outgoing call completion rate monitoring means for monitoring an outgoing call completion rate as a ratio of a message that has been sent to a number of messages requested by a mobile terminal;
An incoming call completion rate monitoring means for monitoring an incoming call completion rate as a ratio of messages that have been received with respect to the number of messages that the mobile terminal responded to the read message;
Call processing for executing a call processing test consisting of a plurality of sequences when the call completion rate calculated based on the monitoring results of both the call completion rate monitoring unit at the time of outgoing call and the call completion rate monitoring unit at the time of incoming call falls below a predetermined value Test execution means;
When it is determined in the call processing test that there is an abnormality in a specific sequence of the plurality of sequences, a suspicious test execution means for executing a suspicion test corresponding to the sequence determined to be abnormal is provided. A device for dealing with a decrease in call completion rate, characterized in that The response at the time of lowering of the call completion rate according to any one of claims 1 to 3, further comprising recovery means for performing recovery processing for improving the call completion rate by an action corresponding to the result of the suspect test in advance. apparatus. The apparatus according to any one of claims 1 to 3, further comprising execution result notifying means for notifying a maintenance terminal of an execution result of the suspicious test execution means. A maintenance terminal notifying unit for notifying the maintenance terminal of the recovery from the decrease in the call completion rate by adding the data collected by the execution of the suspicious test execution unit and the contents of the recovery process of the recovery unit as additional information; 5. The apparatus for coping with a decrease in call completion rate according to claim 4.

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