JP3101898B2 - Service disturbance prevention system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention arises when only one service is intensively started when many kinds of services are allowed to be started in each of one or a plurality of service control devices. The present invention relates to a service disturbance prevention system for preventing an influence on other services in the same service control device due to congestion of a service control device.

[0002]

2. Description of the Related Art Conventionally, as a processing allocation method in a distributed processing system, for example, as disclosed in Japanese Patent Application Laid-Open No. 5-151179, a method for preventing a large number of processing requests from a specific user from affecting other users. In addition, a method has been considered in which an upper limit value is set for each user, and a processing request that temporarily exceeds the upper limit value waits for a processing request.
When a user is regarded as a service and this conventional method is applied to a service control device, if the service exceeds a preset upper limit, a start request for the service is temporarily suspended. However, by simply specifying a fixed upper limit, it is possible to prevent the effects on other services, but even if the service control unit has sufficient processing capacity, special services that have reached the upper limit can be used. May be waited for. In service provision by the service control device, if the processing capacity of the device is not limited, there is no problem even if the specific service is intensively started, and when the limit is reached, processing that does not activate the specific service of the congestion cause is performed. Required. Conventionally, as a service regulation method in the case of congestion in a communication device, for example, Japanese Unexamined Patent Publication No. 5-224
As described in Japanese Patent Publication No. 14, a method of setting a regulation level for each service and equally regulating each service has already been proposed, but the timing of regulation, a method of specifying a service to be regulated at the time of congestion, No consideration has been given to how to adjust regulatory levels.

[0003]

In the above prior art, when a specific service is started intensively and exceeds an upper limit, the processing capacity of the apparatus is reduced in order to prevent an influence on other services. Even if the limit is not reached, the user who has activated the service causing the congestion will be affected. In addition, since each service is regulated equally, it is difficult to regulate services according to the processing capacity of the device, and to regulate services that may affect other services. Become. An object of the present invention is to solve such a problem, and if the service control device has a sufficient processing capacity, no restriction is imposed even if a large number of services are activated, and the processing capacity reaches the limit due to congestion or the like. A service that can eliminate the influence on other services that can be executed by the same service control device by specifying the service that is started most intensively beforehand and restricting the start of the service. An object of the present invention is to provide a disturbance prevention system.

[0004]

In order to achieve the above object, a service disturbance prevention system according to the present invention provides a system for controlling the operation status of a service control device when activation of many types of services is permitted in each service control device. It is characterized in that both of the threshold excess situations for each service are monitored, and based on them, the regulation corresponding to the operating situation is performed for the service before the processing capacity of the service control device reaches the limit. More specifically, a plurality of exchanges (1 in FIG. 1)
0, 11) and its exchange, and a communication terminal (FIG. 1)
12), a service control device (2 in FIG. 1) that controls the execution of a plurality of services based on the execution procedure information of the service when a service activation request is received from the subscriber.
0) and a maintenance operation device (30 in FIG. 1) of the service control device, the service control device has a service control device for all services executable in the device itself. Means for grasping the number of services being executed for each service from the start and end of the execution of the service, and comparing the number of services being executed with a threshold set in advance for each service to monitor an excess state (23 in FIG. 1,
24) and means for monitoring the operation status of the own device (2 in FIG. 1).
5) is provided, and the maintenance operation device specifies the service causing the congestion based on the operation status and the threshold value excess status, and specifies the exchange in which a start request for the service is likely to occur. Congestion control means for notifying the exchange of a regulation level for a service activation request (FIG. 1)
31 to 33), the exchange notified of the regulation level for the service activation request from the maintenance and operation device is configured to regulate the service request call from the communication terminal based on the regulation level. There is a feature.

[0005]

According to the present invention, the operation status monitoring function unit in the own device of the service control device notifies the maintenance operation device of the operation status of the own device at regular intervals. The service execution number monitoring function unit compares the execution number of each service with a threshold value, and notifies the maintenance operation device of the threshold excess status. The service-based congestion control function unit of the maintenance operation device monitors the timing of regulation and the timing of release of regulation from the operation status of the service control device, and when regulation is necessary, a threshold for each service in the service control device. The service to be regulated is specified from the value excess situation, and the regulation information is notified to the related exchange. That is, the service is regulated for each service based on the regulation timing utilizing the processing capability of the service control device. As a result, it is possible to restrict only the service activation request for the service causing the congestion without affecting the activation of another service which is not the cause of the congestion.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, for the sake of simplicity, a case will be described in which the maintenance operation device monitors only a specific service control device. FIG. 1 is a block diagram showing a configuration and functions of a congestion control system according to one embodiment of the present invention. In FIG. 1, reference numeral 10 denotes a subscriber line exchange, 11 denotes a transit exchange, 1
Reference numeral 2 denotes a communication terminal, reference numeral 20 denotes a service control device, and reference numeral 30 denotes a maintenance operation device for performing congestion control of the service control device. 2
Reference numeral 1 denotes a service execution control function unit for controlling the execution of a service in response to a service activation request from an exchange in the service control device. A monitoring function unit in its own device, 23 is a service execution number monitoring function unit that manages the number of executions for each service, 24 is a service actual number management database, and 25 is a unit that collects operating status information of its own service control unit and performs maintenance operation. This is an in-apparatus operation status monitoring function unit that notifies the apparatus. Reference numeral 31 denotes a service-specific congestion control function unit that performs congestion control for each service based on the operation status of the service control device, 32 denotes an operation status management database, and 33 denotes a threshold excess service information management database.

Next, the flow of the processing of this embodiment will be described.
FIG. 2, FIG. 3, and FIG. 5 to FIG. 7 are processing flowcharts in each apparatus or each functional unit in the apparatus according to an embodiment of the present invention. FIG. 2 is a processing flowchart in the subscriber line exchange 10 and the transit exchange 11, FIG. 3 is a processing flowchart in the service execution control function unit 21 in the service control device 20, and FIG. FIG. 6 is a processing flowchart of the service execution number monitoring function unit 23.
Is a processing flowchart in the in-device operating status monitoring function unit 25 of the in-device monitoring function unit 22, and FIG.
7 is a processing flowchart in the service-specific congestion control function unit 31 in the case of 0. In this embodiment, the user operates the communication terminal 12.
A service activation request is made to the exchange 10 via the.
When the exchange 10 or 11 receives a signal from the communication terminal 12 (101 in FIG. 2), it determines whether it is a request to start an IN service (102). (103), and if the activation condition of the IN service is met, it is further determined whether or not the activation request service is under congestion regulation (105). A service activation request is transmitted to (20)
6) Waiting for a control instruction from the service control device 20. If the activation request service is under congestion regulation, based on the regulation level designated by the maintenance operation device 30,
It is determined whether or not the service activation request call is permitted (109).
A service activation request is transmitted to the service control device (106), and the system enters a state of waiting for a control instruction from the service control device 20. When the service activation request signal is not permitted, the service execution control function unit 21 in the service control device 20 receives the service activation request signal (201 in FIG. 3), identifies the activation request service from the received signal (202), and The start service information is notified to the service execution number monitoring function unit 23 in the in-device monitoring function unit 22 (203). In the service execution number monitoring function unit 23,
When the activation service information is received (211 in FIG. 5), 1 is added to the service execution number in the service execution number management database 24 (212).

Here, the configuration of the service execution number management database 24 is shown in FIG. The service execution number management database 24 according to the present embodiment includes a service number 501 assigned in advance for service identification to a service that can be activated in the service control apparatus, and a service execution number 502 indicating the number of services being executed. The degree of influence of the execution of the service on the operation of the service control device (the effect on the operation of the service control device varies depending on the service content. Increase the threshold) and use frequency of the service (increase the threshold for services that are used by many users and decrease the threshold for services that are rarely used)
And the characteristics of the service (for services that are likely to be used suddenly at specific times, increase the threshold only at specific times and decrease the threshold at other times) From the calculated threshold value 503. Then, 1 is added to the value of the service execution number 502 of the service number 501 specified from the activation service information.
For example, when the service whose service number 501 is “2” is started, the value “348” of the service execution number 502 is 1
Is added and set as a value “349”.

Next, in the service execution control function unit 21,
After notifying the service execution number monitoring function unit 23, the service of the activation request is activated (204 in FIG. 3), and a service control signal is transmitted to the exchange 10 or 11 that has issued the activation request (205). The exchange 10 or 11 starts a service by receiving a control signal from the service control device 20 (107 in FIG. 2). After the service is executed, when the end of the service is detected by the exchange 10 or 11, a service completion notification is transmitted to the service control device 20 (108), and the used line is released (104).
Service execution control function unit 21 in service control device 20
When the service completion signal is received from the start requesting exchange 10 or 11 (206 in FIG. 3), the service is terminated (207), and a service termination notification is sent to the service execution number monitoring function unit 23 (208). When the service execution number monitoring function unit 23 in the own apparatus monitoring function unit 22 receives the end service information from the service execution control function unit 21 (213 in FIG. 5), the service execution number monitoring database 23 determines the service execution number in the service execution number management database 24. One is subtracted (214).

On the other hand, the operation status monitoring function unit 25 in the own device in the monitoring function unit 22 in the own device of the service control device 20
At regular intervals, the collection of the operation status information of the own service control device (221 in FIG. 6) and the notification of the collected information to the maintenance operation device 30 (222) are repeated. Maintenance operation device 30
When the information is received by the service-specific congestion control function unit 31 (301 in FIG. 7), the information is stored in the operating status information management database 32 managed by the service control device.
(302).

Here, the operating status information management database 3
FIG. 8 shows the configuration of No. 2. The operation status information management database 32 according to the present embodiment includes, as information indicating the operation status of the service control device, a CPU usage rate 514 indicating how much the processor of the service control device is used, for example.
Alternatively, an operation status information item 510 composed of information items such as a memory usage rate 515 indicating how much memory is required for providing a service in the service control device, calculation of the next change amount 512, and Current value 511 required for congestion determination by comparison with threshold value 513, change amount 5 indicating how much has changed
12, and a threshold 513. Then, based on the information notified from the service control device 20, the change amount is calculated from the notified current value and the registered current value (the value previously notified), and a new change amount is set. further,
For each of the operation status information items 510, a comparison process between the current value 511 and the threshold value 513 and a determination process as to whether or not regulation is necessary are performed based on a change amount 512. Note that the change amount 512 is a normalized change amount obtained by, for example, dividing by a threshold value 513 in order to enable determination of congestion without depending on the operation status information item. Also, the threshold 51
3 is calculated based on the capability of the service control device and is set in advance.

Next, the service-specific congestion control function unit 31 determines whether regulation is necessary based on a comparison between the threshold value and the current value and the rate of change (303 in FIG. 7). Wait for notification from. If necessary, the service control device 20 is requested to acquire a threshold excess status for each service (304). When this request is received by the service execution monitoring function unit 23 in the in-device monitoring function unit 22 of the service control device 20 (see 21 in FIG. 5).
5) Acquire information on a specific service exceeding the threshold from the service actual number management database 24 (21).
6), and notifies the maintenance operation device 30 (217). Upon receiving the information (305 in FIG. 7), the service-specific congestion control function unit 31 in the maintenance operation device 30 registers the information in the threshold excess service information management database 33 (306).

Here, FIG. 9 shows the configuration of the threshold value excess service information management database 33. The threshold excess service information management database 33 according to the present embodiment includes a threshold excess service number 520, an excess usage rate 521, and a regulation level 522. Then, the step 306
When the information of the service number exceeding the threshold value, the number of executions of the service, and the threshold value of the service is obtained from the service control device 20, the excess usage rate is calculated from the number of service executions and the threshold value. ,sign up.

Next, the service-specific congestion control function unit 31
Determination of the regulation level based on the excess usage rate (30 in FIG. 7)
According to 7), it is determined whether or not the regulation level needs to be changed (308). If the regulation level does not need to be changed, the service-specific congestion control function unit 31 enters a state of waiting for a notification from the service control device 20. If the regulation level needs to be changed, an exchange having a possibility of requesting activation of the regulated service is specified (309), and regulation information (regulation target, regulation level) is notified to the exchange (310). . Upon receiving the regulation information from the maintenance operation device 30 (112 in FIG. 2), the exchange 10 or 11 sets a regulation level for the activation of the specified specific service (113).

[0015]

As described above, according to the present invention, the timing and degree of regulation of a service activation request call to the service control apparatus based on the operation status of the service control apparatus, and the timing of regulation release for a regulated service And, if regulation is required, identify the service causing the congestion based on the number of executions managed for each service and the threshold value set for each service, and regulate the activation request call for the service. Notifying the switching equipment of the restriction information for the service, it is possible to prevent disturbance to other services due to intensive activation of only a specific service while utilizing the processing capability of the service control device.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration and functions of a congestion control system according to an embodiment of the present invention.

FIG. 2 is a processing flowchart in a local exchange and a transit exchange in one embodiment of the present invention.

FIG. 3 is a processing flowchart in a service execution control function unit in a service control device according to an embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a service execution number management database in one embodiment of the present invention.

FIG. 5 is a processing flowchart in a service execution number monitoring function unit of the monitoring function unit in the own apparatus according to an embodiment of the present invention.

FIG. 6 is a processing flowchart of the operation status monitoring function unit in the own device of the monitoring function unit in the own device according to the embodiment of the present invention.

FIG. 7 is a processing flowchart in a service-specific congestion control function unit in the maintenance operation device according to the embodiment of the present invention.

FIG. 8 is a diagram showing a configuration of an operation status information management database in one embodiment of the present invention.

FIG. 9 is a diagram showing a configuration of a threshold excess service information management database in one embodiment of the present invention.

[Explanation of symbols]

10: subscriber line exchange, 11: transit exchange, 12: communication terminal, 20: service control device, 21: service execution control function unit, 22: internal device monitoring function unit, 23: service execution number monitoring function unit 24: service execution number management database, 25: operation status monitoring function unit in own device, 30: maintenance operation device, 31: service-based congestion control function unit, 32:
Operating status information management database, 33: threshold excess service information management database.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-284187 (JP, A) JP-A-5-22414 (JP, A) JP-A-1-297955 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) H04M 3/22 H04M 3/42 H04Q 3/545

Claims (1)

(57) [Claims] 1. A plurality of exchanges and controlling the exchanges, and when a service activation request is received from a subscriber via a communication terminal, execution control of the plurality of services is performed based on execution procedure information of the service. In a telecommunications system having an intelligent network structure including a service control device to perform the service control device and a maintenance operation device for the service control device, the service control device includes, Means for ascertaining the number of services being executed for each service from the start and end of execution of the service, comparing the number of services being executed with a preset threshold value for each service, and monitoring the operation status of the own device The maintenance operation device identifies a service that is causing the congestion based on the operation status and the threshold value excess status of each service, and Identify the exchange start request to the service may occur, the service disturbance prevention system the control level for the start request of the service, characterized in that a congestion control means for notifying the exchange.