KR20010045974A - Rule-based localization method in fault localization support system - Google Patents

Abstract

PURPOSE: A rule-based failure localizing method in a failure localizing system is provided to express and simplify a complicate failure localization and measure as a rule by registering measured history by failure events to create a database and systemize a know-how obtained from experiences by a network operator by using an if-then form according to a condition such as adopting a human-knowledge. CONSTITUTION: An alarm report is received from an alarm surveillance module, one of a failure management function(301). It is checked whether the received alarm is an alarm which has been registered in a rule database(302). If it is not a registered alarm, a new event and a new rule registration are requested(303) and connected to a rule registration routine(304). If it is a registered alarm, rule information is extracted from the rule database(305), and an operation list and parameters by operations required for control are extracted from the rule information for the registered alarm(306), and then a control type is checked to checked whether it is an automatic control(307). If the control type is an automatic control, control is performed according to the extracted rule information(308), and an execution report is generated(309) and stored in a log database(310). If the control type is not an automatic control, it is checked whether the control type is a half-automatic control(311). If the control type is not a half-control but a manual control, a measurement history required for the manual control is taken from the rule information(312). If the control type is a half-automatic control, an interface for the half-control is provided to the operator(313). A control condition is received through the received interface from the operator(314) and a control is performed(315).

Description

RULE-BASED LOCALIZATION METHOD IN FAULT LOCALIZATION SUPPORT SYSTEM}

The present invention relates to a method of fault localization based on a rule in a fault localization system and a computer-readable recording medium recording a program for realizing the method. In particular, the present invention relates to maintaining high availability of a network and preventing deterioration of service quality. The present invention relates to a fault localization method for localizing a fault based on a rule and a computer-readable recording medium having recorded thereon a program for implementing the method.

The present invention relates to a method of extracting a fault event generated in a base station system and applying a rule to a breakdown cause and action for each event. The present invention relates to a fault generated in a network when a service is provided along with the construction of a mobile communication network. For management, fault localization of fault events and the ability to handle faults are essential.

In performing these functions, the failure localization and failover functions used in the past have not been systemized, and thus, most of the failure localization and actions have to be left to the network operator. This results in a situation in which the know-how of the network operator's experience is inevitably dependent on the network operator, and rapid failover is not possible in the absence of the experienced person, which may result in a deterioration of service to the entire network. there was.

In addition, even if the functions are partially implemented and processed in the system, they are implemented in a general programming language, and the software is changed and recompiled in order to apply the control of new events, event registration and actions for new network elements to the system. Was performed. This operation may cause a load due to a software version change, and may have a problem that may affect other application modules.

The present invention has been made in order to solve the above problems, and in order to maintain the high availability of the network and to perform a failure localization function to prevent the deterioration of service quality, the type of each event for the failure event generated A computer-readable recording medium that records the failure localization method for localizing the failure and the program for realizing the above method by identifying the causes of failure for each event and registering the contents of the measures as rules. The purpose is to provide.

1 is an exemplary diagram of a connection relationship of a fault localization system to which the present invention is applied.

2 is a flow chart of an embodiment of a rule registration process of a fault localization method based on a rule in a fault localization system according to the present invention;

Figure 3 is a flow diagram of an embodiment of the failure localization and action of the failure localization method based on the rule in the failure localization system according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: network management system 12: fault localization system

13: rule database 14: base station system operation management unit

15: base station controller 16: base station

In the present invention for achieving the above object, in the fault localization method based on the rule applied to the fault localization system, to distinguish the type of each event for the generated fault event and to identify the cause of the fault for each event A first step of registering an action item as a rule; And a second step of controlling and localizing the failure according to the registered rule when the failure occurs.

In addition, the present invention, in the failure localization system provided with a processor, the type of each event for the generated failure event, grasp the cause of the failure for each event and registers the details of the action to the rule (Rule) function; And a computer-readable recording medium having recorded thereon a program for realizing a function of controlling and localizing a failure according to a registered rule when a failure occurs.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary diagram of a connection relationship of a fault localization system to which the present invention is applied.

Here, the network management system 11 represents the failure management subsystem of the overall network management system, and an alarm report is generated from the failure monitoring module.

The fault localization system 12 is a separate fault localization system based on a rule, and the rule database 13 manages events, operations, parameters, and log data as a database managing registered rules.

Finally, the base station system operation management unit 14 is responsible for the operation management of the base station system operation management unit 14, receives the control command from the failure localization system 12, the base station controller 15 and the base station 16 ).

The present invention defines and registers the cause and action details of each event type for the failure-related events of the base station equipment as a rule, then program the rule database when the failure event occurs by programming the rule database. Next, by providing empirical know-how as a rule to the inexperienced network operators in preparation for the absence of network operators to enable automatic control of failures, it is possible to process business quickly and to register additional rules on new events and new network elements. If necessary, it can be solved through the rule registration routine without changing the software of the whole system.

Therefore, the fault localization and failover method applying the rule for the base station system proposed in the present invention supports fast fault localization, which allows the mobile communication system to maintain high network availability. To be a system. Rule-based system enables developers to develop in a way that is easy based on modular logic regardless of the structure and control of the application, and in the aspect of maintenance, if the application needs to be modified, It is possible to respond to the requirements quickly by modifying the rules without the need for compilation. In addition, the history of action on disability localization is presented transparently so that it can be carried out with a consistent work flow rather than the old-fashioned disability localization. Therefore, the present invention can apply the rule-based method to the fault localization of the base station system to obtain the benefit of the rule-based system.

A base station system is a system including a base station equipment and a base station controller. The base station equipment performs a wireless access function through a forward and reverse link communicated with each terminal, and processes a transmission and reception protocol between a terminal and a base station, setting and releasing a wireless channel, It performs call processing functions related to handoff and the like, and stores and reports performance management quality measurement information of the terminal and transmits them in the form of signals required by the base station controller 15. In addition, the base station controller 15 is located between the base station and the switch, and performs equipment necessary for radio call processing, such as control of the wired and wireless links, base station management, transcoding, handover control during incoming and outgoing call processing. The obstacles to which the rule is proposed in the present invention are considered to be limited to the base station system. The fault localization system 12 collects the alarm report data collected from the equipment, analyzes the alarms, and prevents the minimum deterioration due to the faults, or even if a fault occurs, it cannot be recognized in the short term, that is, the service side. Diagnose and localize the fault as quickly as possible. The present invention analyzes the collected alarm report and localizes it, and registers and manages the action details for each fault event as a rule to be applied when the corresponding event occurs. First, classification of fault events is required before the rule is applied.

The following [Table 1] illustrates the types of failure events that may occur in the base station system to localize and measure the failure by applying one or more rules for each event during rule registration.

As such, there may be a part capable of automatic control without the operator's intervention among the possible fault alarms shown in [Table 1], a part that the operator can control in a semi-automatic form, and a part that can be fully manual controlled. There may be this. Control types are classified and registered as rules according to the characteristics of each alarm. The part requiring semi-automatic and manual control should be provided with an interface for the operator to intervene, and the part that is automatically controlled is automatically performed in the system, so that the matters should be historyed and the controlled part should be reported. You must return to the state. Fault-related alarms are divided into device-specific alarms and external environmental elements, software processing error alarms, quality of service (QoS) alarms, and communication-related fault alarms.

Meanwhile, an example of a description of a rule for a receiver failure alarm of a radio channel among the types of alarms shown in [Table 1] is as follows.

Rule 101:

If eventNE is radiochannel

and eventType is receiver failure

and this event is registered event,

then

execute test routine

and execute diagnosing faults

and initialize handover

and indicate the preferred handover destination

and call clear

and send the preferred handover destination, parameters of MS to MSC

end.

2 is a flowchart illustrating an embodiment of a rule registration process in a fault localization method based on a rule in a fault localization system according to the present invention.

As shown in FIG. 2, as a method for registering an alarm occurrence as shown in [Table 1] as a rule, a control condition rule must be registered to execute a control function for failover. If this control condition rule matches the condition of the received event, there must be a control function to perform control operation or change the database of the network management system.

First, a unique event name is input (201), information for extracting from a received event is specified (202), information for control condition mapping is input (203), and a network element of a control target is input (204). The event is registered (205).

In this way, when an event is registered, it is necessary to register an operation necessary for performing control. In other words, the operation is a rule for making a list of operation commands that are directly transmitted to the network element. The operation includes a test for a fault, a diagnosis-related operation, and a control-related operation. When the control condition of the event is satisfied in connection with the control condition of the event, Allows you to perform an operation. Each operation consists of a list of operating instructions and their parameters. Therefore, a unique operation name is input (206) and a control target is input (207). Next, a list of control commands for the control object is input (208), and parameters for each control command are input (209) to register the operation (210).

In addition, a unique parameter name is input (211), the parameter contents are described (212), and the parameters used for the operation are separately registered (213). In this way, if parameter is registered separately, it can be used in other commands.

On the other hand, if the event, operation, command syntax and parameters are stored in the database (214) and registered, all operations for rule registration are performed.

After that, enter a unique rule name (215) and connect with the event to which the rule applies (216), connect with the operation to be performed (217) and input other automatic control or not (218) to complete the rule (219) Finally, the rule is registered (220).

3 is a flowchart illustrating an embodiment of a failure localization and action in a failure localization method based on a rule in a failure localization system according to the present invention.

As shown in FIG. 3, an alarm report is received from an alarm surveillance module, which is one of fault management functions (301).

Then, it is checked whether the received alarm is an alarm registered in the rule database 13 (302).

As a result of the check, if the alarm is not a registered event, it is a new event, requesting registration of a new event and a new rule (303), connecting to the rule registration routine (304), and checking whether the alarm is registered in the rule database 13 (302). To the next.

As a result of the check, if it is a registered alarm, the rule information is extracted from the rule database 13 (305), and from the rule information for the registered alarm, the operation list and the parameters for each operation are extracted (306). In step 307, it is checked whether the control is automatic by checking the control type.

As a result of the check, if the control is automatic, the control is executed according to the extracted rule information (308), and after execution, the execution report is generated (309) and stored in the log database (310). At this time, the stored control-related log allows the operation performed incorrectly due to the automatic control to be reinstated.

As a result of the check, it is checked whether the automatic control or the semi-automatic control (311).

As a result of the check, if it is a manual control rather than a semi-automatic control, the control details necessary for manual control are received and output from the rule information (312). If the semi-automatic control is required, the operator's intervention is required, thereby providing the operator with an interface for semi-automatic control (313). . The control condition is input from the operator through the provided interface (314) and the control is executed (315).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

The present invention as described above, by registering the action history for each failure event as a rule and database it, it is possible to express and simplify complex fault localization and action as a rule, and to apply human knowledge Likewise, if-then form can be used depending on the condition, so that the know-how from the experience of the network operator can be systemized.

In addition, the present invention is capable of automatic control and remote control of the verified failure localization and action, it is possible to present a series of tasks to quickly identify the cause of the failure when the failure occurs. By performing this series of tasks through the system, consistent and transparent failover can be performed, allowing for resilience in the event of a faulty failover, even for inexperienced network operators, with the support of the system. There is an effect that can be performed.

In addition, the present invention can be easily accommodated by registering the rules for the new event according to the software and hardware changes in addition to the application of the rules to the existing event without recompiling the associated control program, thereby improving the performance of the system It works.

Claims (4)

In the failure localization method based on the rule applied to the failure localization system, A first step of classifying each type of event for the generated fault event, identifying a cause of the fault for each event, and registering the action items for the event as a rule; And Second step of controlling and localizing failure according to registered rules when failure occurs Disability localization method based on the rule comprising a. The method of claim 1, The first step is, A third step of registering the event by receiving the event name, specifying the extraction target information, and receiving the control condition mapping information and the control target network element; A fourth step of registering an operation by receiving an operation name, receiving a control object, a control command list, and a parameter; A fifth step of registering parameters after receiving parameter names and specifying parameter contents; And The sixth step of registering a rule by receiving an automatic control type after connecting a rule application target event with an input of a rule name Disability localization method based on the rule comprising a. The method according to claim 1 or 2, The second step, A seventh step of checking whether the input alarm is an alarm registered in the rule database; An eighth step of registering a new rule if the alarm is not registered as a result of the checking of the seventh step, and confirming the type of control according to the rule information stored in the rule database if the alarm is a registered alarm; And A ninth step of performing control according to the extracted information if the automatic control results in the eighth step and generating an execution report and storing it in a log database; A tenth step of performing a control after receiving a control condition by providing an interface for semi-automatic control to an operator if it is semi-automatic control as a result of the checking of the eighth step; And As a result of the checking of the eighth step, if the manual control, the eleventh step of providing the action details necessary for the manual control to perform the operation Disability localization method based on the rule comprising a. In a fault localization system with a processor, A function of classifying each event type for each occurrence of a failure event, identifying a cause of each event for each event, and registering the contents of the action as a rule; And Function to control and localize failure according to registered rule when failure occurs A computer-readable recording medium having recorded thereon a program for realizing this.