Patent ID: 11862007
Assignee: VIETTEL GROUP
Field: Control (Instruments)
Classification: CPC G  H | IPC G

Claim 0:
1. A method for automatically analyzing and filtering out redundant alarms in the fault management system of radio transceiver station devices,
wherein the method comprises the following steps:
step 1: operators defines relationships between the redundant alarms, define rules for filtering redundant alarms at a FRDU (fault rules defined unit) block;
at this step, four types of relationships between a parent alarm and a child alarm are defined including: a 1-1 relationship, a 1-n relationship, a n-1 relationship and a n-n relationship; specifically:
the 1-1 relationship: this relationship defines a parent alarm that will have only one child alarm; this means that when the system generates a parent alarm there will always be a child alarm attached;
the 1-n relationship: this relationship defines a parent alarm that will have more than one child alarm; this means that when the system generates a parent alarm, there will always be more than one child alarm;
the n-1 relationship: this relationship defines a child alarm that can be the child of many different parent alarms; this means that when the system generates many different parent alarms, all of them are accompanied by the same child alarm;
the n-n relationship: this relationship defines a parent alarm that will have many different child alarms at the same time, a child alarm is also a child of many different parent alarms;

the FRDU block will allow the definition of these relationships, the relationship definition will need to be done only once and will normally be defined during the development of the device manufacturer's alarms, the operators only need to read the instructions describing it; during operation, error managers can still be given permission to change these relationships;
the operators define these multi-level model relationships on the interface of a centralized management system (EMS) in different ways such as using a drag-and-drop interface to create a model, using a command line interface (CLI) to add, edit, and delete relationships;
step 2: a FSU (alarm detection and monitoring) block will detect alarm and send to a FAFU (analysis and redundancy alarm filtering) block;
the alarm detection and monitoring block will detect the alarm located in the hardware components in a radio base station to monitor and send alarms, the status of the alarm depending on the period, during, the alarm life for the analysis and redundancy alarm filtering (FAFU) block; wherein:
hardware components in a radio base station include: DU (distributed unit), CU (centralized unit), RRU (radio remote unit);
an alarm will have the following properties: alarm name, alarm identifier, alarm object, alarm status, alarm severity, alarm time, and additional information to describe the cause and resolution of the alarm;
the severity of the alarm includes levels from high to low as follows: critical, major, minor, warning; an alarm's life cycle will have three states of operation as follows: new, changed, cleared;

step 3: the FAFU block will receive alarms from the FSU block, based on the rules defined in the FRDU block will analyze and filter out redundant alarms;
to be able to filter out redundant alarms, the FAFU block will perform the following small steps:
when the FAFU block receives an alarm from the FSU block, based on the relationship between the alarms defined in the FRDU block, the system will determine that all parent and child alarms of the recently received alarm are existing in the list of currently displayed alarms;
the FAFU block determines whether the alarm's status is cleared or different;
depending on the status of the alarm, the system will process in two separate threads according to the alarm's status is cleared or different;

step 4: a FSMU (fault storage and monitoring unit) block will receive the alarms after being filtered, stored in the database and also send these alarms to the EMS system; the EMS system provides an interface that displays a list of ongoing alarms for the operators to handle in a timely manner.