KR20030025088A - Method for managing alarm according to priority in mobile communication system - Google Patents

Abstract

PURPOSE: A method for managing an alarm according to priority in a mobile communication system is provided to manage generated alarms according to the priority of the generated alarms. CONSTITUTION: A priority is decided as to each alarm generated in a mobile communication system by using the operation association and upper and lower relation of the generated alarms. An alarm is detected according to the generation of fault. If an alarm previously generated before the detected alarm exists, the priority of the detected alarm is compared with the priority of the previously generated alarm. If the priority of the detected alarm is higher than the priority of the previously generated alarm, the detected alarm is outputted to an operator.

Description

How to manage alarms according to priority in mobile communication system {METHOD FOR MANAGING ALARM ACCORDING TO PRIORITY IN MOBILE COMMUNICATION SYSTEM}

The present invention relates to a mobile communication system, and more particularly to a method for managing alarms generated according to their priorities.

A base station subsystem (BSS), which is a mobile communication system, is generally composed of a base station controller (BSC) and a base transceiver subsystem (BTS). The base station controller is matched with a mobile switching center (MSC), and all operation information generated by the base station subsystem, for example, alarm information, is matched with the base station manager (BSM). Is reported. The base station manager performs the initialization and various operation and maintenance functions of the base station controller and the base station, and the alarm information generated in the base station subsystem is in the form of a text or graphic operator's terminal. ) To be identified by the operator.

However, the base station subsystem detects failures of various sub-systems, boards and processors constituting the base station subsystem, generates an alarm according to the failure detection, and transmits the alarm to the base station manager. Operate fault management software. However, the conventional fault management software processes all fault information detected at the same location into an alarm form and outputs it to the base station manager so that the alarms for all the fault information are reported to the operator.

For example, if any board is herniad, the hardware failure of hernia, such as hernia failure, is detected at the same location as the failure and power failure of the board as well as the failure of the board, and the failure management software detects all of the detected failure information. It is processed in the form of alarm and reported to the operator. Then, in fact, the operator receives a board hernia alarm, a board power failure alarm, and a board malfunction alarm generated according to the board hernia, and grasps the contents of the reported alarms and takes a corresponding action. For example, if the operator reported three alarms, the operator would like to perform the corresponding three actions for the three alarms reported. However, in the case of board hernia as described above, for example, if only the board hernia alarm is solved, the remaining alarms, that is, the board power failure alarm and the board malfunction alarm, are naturally solved.

As described above, malfunctions are detected in various aspects for one cause, and the processing of the plurality of detected malfunctions in the form of an alarm and reporting to the operator may cause a load on the system. It can also be an obstacle to quickly identifying and taking action on a system's failure status. Herein, the load of the system refers to a communication load between software blocks constituting the system.

That is, one to several hundred alarms can be generated for one fault event. Since one alarm requires one message communication, several to hundreds of communication can occur instantaneously. When there are two or more software blocks to communicate with, n times more communications occur than the communication that occurred for the single failure event. Thus, when the fault event occurs continuously, message communication for alarm output according to the fault event may occur intensively at once, thereby increasing the load on the system.

In addition, numerous alarm reports in a short time may not be effective information for the operator. In other words, when a large number of alarms are reported in such a short time, that is, all hardware alarms and software alarms are simultaneously reported, the operator spends a lot of time analyzing these alarms and analyzing the fault condition. There was a problem that the abnormal operation time is inevitably increased.

Accordingly, an object of the present invention is to provide an alarm output method according to priority in a mobile communication system.

Another object of the present invention is to provide a method for outputting only an alarm having the highest priority in a mobile communication system.

Another object of the present invention is to provide a method for storing alarms generated according to priorities in a mobile communication system.

Method according to the first aspect of the present invention for achieving the above objects; Setting priorities for each of the alarms generated in the mobile communication system with motion correlations between the alarms and having an upper and lower relationship, and after determining the priorities for each of the alarms, Detecting and comparing a priority between the detected alarm and a pre-generated alarm if there is an alarm previously generated before the detected alarm, and the detected alarm is pre-generated. And outputting the detected alarm to an operator only when the priority is higher than that of the alarm.

A second aspect of the present invention for achieving the above objects is; In the alarm management method according to the priorities in the mobile communication system having a bit mask value for each of the alarms that occur, and having an alarm storage variable structure for storing the alarm at a corresponding position according to the bit mask value, Determining a priority and a bit mask value for each of the alarms with motion associations and hierarchical relationships between the alarms for each alarm occurring in a mobile communication system; Detecting an alarm according to a failure after determining a bit mask value; searching for the alarm storage variable after detecting the alarm, and if there is an alarm previously stored before the detected alarm, Comparing the priorities among the stored alarms, and If the alarm is detected higher priority than the alarm is generated only in the group and the detected alarm, it characterized in that it comprises the step of controlling to output the operator.

1 is a diagram schematically showing a configuration of a mobile communication system for performing a function in an embodiment of the present invention.

2A illustrates a hardware alarm hierarchy according to priority in a board that is directly cabled to a main alarm collection board according to an embodiment of the present invention.

FIG. 2B illustrates an alarm hierarchy according to priorities in a board indirectly connected to the main alarm collection board and a board connected to the main alarm collection board and the back board according to another embodiment of the present invention.

3 is a diagram illustrating an alarm hierarchy based on a priority between a hardware alarm and a software alarm according to another embodiment of the present invention.

4 illustrates a signal link alarm hierarchy according to priority in an asynchronous transmission mode link according to another embodiment of the present invention.

5 is a diagram illustrating a signal link alarm hierarchy according to priority in an E1 / T1 link according to another embodiment of the present invention.

6 illustrates a hardware alarm storage variable structure according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

1 is a diagram schematically showing a configuration of a mobile communication system for performing a function in the embodiment of the present invention.

The mobile communication system includes a mobile switching center (MSC) 130, a home location register (HLR) 140, and a BTS controller (BSC) 120. And a Base Transceiver Subsystem (BTS) 110, and are wirelessly connected with a Mobile Station (MS) 100 to provide a Public Switching Telecommunication Network (PSTN) 160 and a mobile telephone network ( PLMN: performs a function of accessing the Public Land Mobile Network (160).

The base station controller 120 performs radio link, wired link control, and hand-off functions, and alarms fault information generated from the base station 110 and the base station controller 120 itself. It is processed in the form of an alarm and forwarded to a base station manager (BSM) (not shown). In particular, in the embodiment of the present invention, the base station controller 120 groups the alarm types according to the failures occurring in the base station 110 and the base station controller 120 itself with similar types of failures. Also, determine the priority (priority) between the grouped alarms. After determining the priorities for the alarms generated in this way, only the alarms having the highest priority for the alarms for the failures are output to the base station manager.

The base station manager matches the base station controller, performs initialization and various operation and maintenance functions of the base station controller and the base station, and also occurs in the base station subsystem, that is, the base station 110 and the base station controller 120. The alarm information is output to an operator's terminal in a text or graphic form for identification by the operator. The base station 110 is connected to the base station controller 120 to form a wireless communication path with the mobile station 100 and to manage radio resources. The home location register 140 performs a subscriber location registration function and stores subscriber identification and number planning related information, subscriber operation related information, authentication related information, additional service related information, and billing related information.

FIG. 2A illustrates a hardware alarm hierarchy according to priority in a board that is directly cabled to a main alarm collection board according to an embodiment of the present invention.

Referring to FIG. 2A, the main alarm collection board collects alarms according to failures generated by the base station 110 and the base station controller 120 itself in the base station controller 120 described with reference to FIG. 1. It is a board. FIG. 2A illustrates the hardware alarm hierarchy priority when a specific board is connected to the main alarm collection board via an alarm cable. The specific board informs the main alarm collection board of the alarm generated from the specific board itself, and the state of the alarm cable is a condition of the hardware alarm because the specific board is connected to the main alarm collection board through the alarm cable. Becomes In other words. A specific board connected to the main alarm collection board and the alarm cable in the state that there is no failure in the alarm cable has a board deletion alarm and a power fail alarm as shown in FIG. 2A. It has a hierarchy of function fail alarms. That is, the board hernia alarm has the highest priority, followed by the power failure alarm, and then the malfunction failure alarm.

The board detachment alarm refers to a case where only one board of an active board or a standby board is detached in the case of a redundant board. Therefore, when the board hernia alarm occurs, only one board of the active board or the standby board is demounted, so switching over from the detached board to the unseamed board occurs to maintain normal operation. It is possible. The power failure alarm is an alarm that occurs when a power supply fails in a board designed as on-board power. The malfunction alarm is an alarm that occurs when a malfunction occurs for reasons other than the board failure or a power failure, and occurs when the hardware fails to operate normally.

Here, the malfunction alarm occurs when there are 1 to 3 types of hardware failures according to the board type. The hardware failures are first a board reset, and secondly an ASFA board, which is a switch board. This is a switch port failure that occurs when signal locking is not performed. Third, the clock supply from the GCRA board is not normally provided.

In FIG. 2A, an alarm hierarchy priority of a specific board connected to the main alarm collection board and an alarm cable has been described. Next, a board indirectly connected to the main alarm collection board and a back board to the main alarm collection board are connected. Alarm layer priorities in the board will be described with reference to FIG. 2B.

FIG. 2B illustrates an alarm hierarchy according to priorities in a board indirectly connected to the main alarm collection board and a board connected to the main alarm collection board and the back board according to another embodiment of the present invention.

First, the priority of hardware alarms will be described when a specific board is indirectly connected to the main alarm collection board with reference to FIG. 2B. The specific board is indirectly connected to the main alarm collection board means that the specific board collects alarms generated by the specific board itself, and then, through interprocessor communication (IPC) or serial communication (IPC). It means to output the collected alarm to the main alarm collection board. Since the specific board is indirectly connected to the main alarm collection board, the state of the redundancy boards of the specific board, that is, the active board and the standby board becomes a condition of the hardware alarm. That is, since the main alarm collection board and the specific board are indirectly connected, the specific board is redundant as shown in FIG. 2B in the state that neither the active board nor the standby board of the specific board is detached. It has a hierarchy of dual board deletion alarms, board deletion alarms, power fail alarms, and function fail alarms. That is, the redundant board hernia alarm has the highest priority, followed by the board hernia alarm, power failure alarm, and functional failure alarm.

The redundant board detachment alarm is a case where both the active board and the standby board are detached when the non-processor board is operated in a redundant structure, that is, in a redundant structure of the active board and the standby board. Here, the non-processor board is a board that generates an alarm only in a hardware situation because a software block does not exist. When the active and standby boards are both detached and service is not available, the "redundant board hernia ( DUAL BOARD DELETION) alarm, and the redundant board hernia alarm has the highest priority. For reference, the processor board is a board that generates not only hardware alarm but also software alarm due to the existence of a software block. The processor board transmits a keep-alive message in order to check whether the software block is running and performs processor polling. If a response is not received from the redundant processor, that is, the active processor and the standby processor, a "Dual Processor Down" alarm is generated.

Therefore, when the redundant board hernia alarm occurs, it is impossible to continuously maintain normal operation because both the active board and the standby board are detached. The remaining alarms, that is, the board hernia alarm, the power failure alarm and the functional failure alarm are the same as described with reference to FIG. 2A, and thus description thereof will be omitted.

On the other hand, there is a "Alarm Cable Deletion" alarm as a hardware alarm generated in the cable of the backboard. In the case where the main alarm collection board and the specific board exist in the same shelf, most of the main alarm collection board and the specific board are connected in the backboard pattern to transfer information, and the main alarm collection board and the specific board exist in different shelves. The alarm collected from the specific board through the alarm cable is output to the main alarm collection board. When the alarm cable is removed, the alarm cable hermetic alarm is generated, and when the alarm cable hermetic alarm occurs, a hardware alarm cannot be output through the corresponding alarm cable.

For example, when hardware alarms of A, B, and C boards are output to the main alarm collection board through alarm cable # 00, when the alarm cable # 00 is demounted, the A, B while the alarm cable is demounted. However, hardware alarms from C boards cannot be reported to the operator. After the alarm cable is mounted, the alarm according to the alarm cable sheathing has the highest priority even if the priority of the alarm layer is not separately defined. Therefore, the main alarm collection board maintains the alarm state immediately before the alarm cable is mounted while the alarm cable is mounted, and collects the hardware alarm information newly at that time after the alarm cable is remounted, and thus the actual current alarm state. Will be kept accurate.

Next, when a specific board is connected to the main alarm collection board and the back board with reference to FIG. 2B, the priority of hardware alarms will be described. The specific board is connected to the main alarm collection board and the back board because the connection between the main board and the main alarm collection board is made of a back board pattern. In this case, the hardware alarm layer has the same priority as the main alarm collection board and the specific board indirectly connected. However, since the main alarm collection board and the specific board are connected to the back board, only the condition for the hermetic status of the redundant boards is not given.

3 is a diagram illustrating an alarm hierarchy based on a priority between a hardware alarm and a software alarm according to another embodiment of the present invention.

Referring to FIG. 3, all software alarms on a board define a board hernia alarm as the highest priority alarm among hardware alarms. This is because it is meaningless to manage software alarms when the board is not mounted, that is, when the board is dismounted. All software alarms that have already occurred when the board on which the software alarms are generated are dismounted. Are released and only the board hernia alarm is generated. When the board is mounted again, the board hernia alarm is released and only the alarm which is recollected after the software reset is generated as a software alarm.

In this case, the "Dual Processor Down" alarm is an exception. The redundant processor down alarm does not generate a detected failure as an alarm, but is an alarm defined to provide an operator with a kind of information at a time when the redundant processor is all down in consideration of user convenience. Therefore, the redundant processor down alarm is continuously generated without being cleared even if the board hermetic alarm described in FIG. 3 is given the highest priority.

4 is a diagram illustrating a signal link alarm hierarchy according to priority in an asynchronous transmission mode link according to another embodiment of the present invention.

Referring to FIG. 4, the asynchronous transmission mode signal link alarm is a software alarm and is applied in a state in which the board hernia alarm is defined as the highest priority alarm as described above. That is, when the board hernia alarm is generated, all of the signal link alarms are in an alarm release state. As shown in FIG. 4, the priority of the signal link alarm is defined as a Loss Of Signal (LOS) alarm as the highest priority alarm, followed by a Los Of Frame (LOF) alarm and frame departure. (OOF: Out Of Frame) Alarm, L_ Alarm Indication Signal (AIS) Alarm (MS_AIS Alarm), P_AIS Alarm, P_ Loss Of Pointer (LOP) Alarm, Cell Border Loss (LCD: Loss Priority of Cell Deliniation alarms, Out of Cell Deliniation alarms.

Each of the signal link alarms will be described below.

The LOS alarm is an alarm generated when no signal is input to a specific board. The LOF alarm is an alarm generated when a frame is not detected. ) Is an alarm that occurs when a frame is out of a predetermined setting range, that is, when frame synchronization cannot be obtained, and the frame loss alarm occurs when the frame departure alarm exceeds a preset number of times set by the system. . The alarm occurrence indication (AIS) alarm is an alarm for notifying that an alarm has occurred at a corresponding position, and the L_AIS alarm is an alarm occurrence indication alarm generated at its own station.

Here, the signal link alarm is largely classified into a local alarm and a remote alarm, and the local alarm is an alarm generated from the board itself at a corresponding position, and the large alarm is used in a large station with respect to the local station. The detected alarm is an alarm for determining that a signal generated in the local station has a failure and notifying the local station of the failure. Therefore, when "L" is attached to the front when the alarm is displayed, it indicates an alarm generated in the own station, and when "P" is attached to the front, it indicates an alarm that has received an alarm detected by a large country.

The pointer loss (LOP) alarm is an alarm that occurs when a pointer is not detected, and the cell boundary loss (LCD) alarm is an alarm that occurs when a boundary of the asynchronous transmission mode cell is not detected. The cell boundary deviation (OCD) alarm is an alarm that occurs when a boundary of the asynchronous transmission mode cell is out of a preset range. In addition, the RDI (Remote Defect Indication) alarm shown in FIG. 4 is an alarm for notifying that the alarm has occurred.

In FIG. 4, the signal link alarm occurring in the asynchronous transmission mode link is described according to its priority. Next, the signal link alarm occurring in the E1 / T1 link will be described according to its priority with reference to FIG. 5. .

5 is a diagram illustrating a signal link alarm hierarchy according to priority in an E1 / T1 link according to another embodiment of the present invention.

Referring to FIG. 5, the E1 / T1 signal link alarm is a software alarm and is applied in a state in which the board hernia alarm is defined as the highest priority alarm as described in FIG. 4. That is, when the board hernia alarm is generated, all of the signal link alarms are in an alarm release state. As shown in FIG. 5, the priority of the signal link alarm is defined as a signal loss alarm as the highest priority alarm, followed by a frame loss alarm, a frame departure alarm, and an alarm occurrence indication alarm. The signal loss alarm, frame loss alarm, frame departure alarm, and alarm occurrence indication alarm have the same function as described with reference to FIG. 4, and thus a detailed description thereof will be omitted.

6 is a diagram illustrating a hardware alarm storage variable structure according to another embodiment of the present invention.

Referring to FIG. 6, hardware alarms are generated independently according to a failure occurrence, and the types of hardware alarms generated are, for example, an alarm cable hernia alarm, a redundant board hernia alarm, and a board hernia alarm. Assume that it is a power failure alarm or a function failure alarm. The structure of the alarm storage table that stores the generated alarms allocates one bit for each alarm as shown in FIG. Therefore, the variable for storing hardware alarms should be set to a size that accommodates bits equal to the number of hardware alarms. In the above example, since the number of alarms does not exceed eight, an unsigned char variable that accommodates 8 bits is set. The way of assigning the alarm to the bit is to make the alarm with the higher priority occupy the upper bit. In the case of the above alarms, the alarm cable hernia alarm is Bit6, the redundant boat hernia alarm is Bit5, the board hernia alarm is Bit4, the power failure alarm is Bit3, and the malfunction alarm is Bit2. Therefore, when an alarm occurrence report is received from the system, the corresponding bit of the alarm storage variable must be assigned according to the defined priority. On the contrary, when the alarm release report is received, the value set in the bit where the corresponding alarm is stored is cleared.

In the structure of storing alarms in the above-described manner, when the corresponding bit is set and cleared, alarm management is performed. A newly collected alarm is compared with alarms that are currently generated to determine whether the alarm has a higher priority or a lower priority. To find out whether a branch is an alarm, simply perform a simple relational operation. That is, for example, when a failure alarm is newly collected while a board heraldic alarm is generated, a value of 0x10 is already stored in a specific bit, that is, Bit 4, of the alarm storage variable structure. In this state, the malfunction alarm having a bit mask value of 0x08 is reported, and the priority malfunction is compared with the reported failure of the board failure alarm. As a result of the comparison, since the already stored board hernia alarm has a higher priority, the newly reported malfunction alarm is ignored and the processing operation is not performed. Of course, if the alarm has a higher priority than the board hernia alarm, for example, the alarm cable hernia alarm because the alarm cable hernia alarm has a higher priority to report to the operator that the alarm cable hernia alarm has occurred Output to base station manager.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention sets the priorities of alarms generated in the mobile communication system according to the upper and lower hierarchical order, and outputs only the alarms having the highest priority according to the priorities to the operation. This has the advantage of eliminating the system load. In addition, by outputting only the alarm with the highest priority to the operator has the advantage of improving the system performance by allowing the operator to quickly identify the system failure status and take action. And by generating only the alarm having the highest priority has the advantage of eliminating the service load by removing the message communication that occurred in a number of alarms that occurred for the failure event.

Claims (4)

In the alarm management method according to the priority in the mobile communication system, Determining priorities for each of the alarms generated in the mobile communication system with motion correlations between the alarms and a parent-child relationship; Detecting an alarm according to occurrence of a failure after determining a priority of each alarm; Comparing priorities between the detected alarms and previously generated alarms if there are alarms previously generated before the detected alarms; And controlling the output of the detected alarm to an operator only when the detected alarm has a higher priority than the previously generated alarm. Way. The method of claim 1, And if the detected alarm has a lower priority than the pre-generated alarm, further comprising not performing a process for the detected alarm. In the alarm management method according to the priority in the mobile communication system having a bit mask value for each of the alarms generated, and having an alarm storage variable structure for storing the alarm at a corresponding position according to the bit mask value, Determining a priority and a bit mask value for the priorities for each of the alarms generated in the mobile communication system, having motion correlations and upper and lower relationships between the alarms; Detecting an alarm according to a failure after determining a priority and a bit mask value for each of the alarms; Searching for the alarm storage variable after detecting the alarm and comparing a priority between the detected alarm and a pre-stored alarm when there is an alarm previously stored before the detected alarm; And controlling the output of the detected alarm to an operator only when the detected alarm has a higher priority than the previously generated alarm. Way. The method of claim 3, And if the detected alarm has a lower priority than the previously generated alarm, further comprising not performing a process for the detected alarm.