KR20000001669A - Method for generating/restoring management information of management agent in telecommunication management network - Google Patents

Abstract

PURPOSE: A method for generating/restoring a management information in a telecommunication management network is provided to perform a restoring process by generating a prior management information when a management agent is finished at abnormal state. CONSTITUTION: A method produces a gateway for a communication of a network element at an initial driving, and finishes a gateway if a gateway between a management agent and a network element is at abnormal connection state. If the gateway between the management agent and the network element is at a normal connection state, the method determines whether an initialization success file is present or not. The initial success file is used for determining an automatic restoring state of the management agent or a normal performing state. If the initialization success file is not present, the normal performing state is determined, and then an initial management information tree is constructed. An initial management object instance is produced. The management information tree and the management object instance information are stored as a storing information file in order to perform an automatic restoration. In case of a normal storing of the restoration information file, an initial success file is generated. Then, it is determined whether the management object instance is changed or not. If the management object instance is changed, a changed management object instance and the management information tree information are reflected in the restoration information file.

Description

How to create and recover management information of management agents in communication management network

The present invention relates to a method for generating and restoring management information of a management agent in a communication management network, and more particularly, to a management agent managing a network element (NE) in a telecommunication management network (TMN). The present invention relates to a method for generating and restoring previous management information in case of terminating in an abnormal situation.

1 illustrates a schematic diagram of a cellular system using a conventional Code Division Multiple Access (CDMA) technique. As shown, a mobile station (MS) 40, 41 receiving a mobile communication service and a base station transceiver subsystem (BTS) providing a service to the mobile terminal 40, 41. (30) (31), a base station controller (BSC) 20, 21 for controlling the base station 30, 31 and the base station controller 20, 21 are connected to a general public switched telephone network ( It consists of a Mobile Switching Center (MSC) 10 that connects to a Public Switched Telephone Network (PSTN) 11. The mobile switch 10 obtains information about the mobile terminals 40 and 41 from a home location register (HLR) 12 and a visitor location register (VLR) 13. to provide.

The above-mentioned systems constitute a communication network, and require a network management system (NMS) for managing the mobile communication network configured as described above. In the mobile communication network, each base station (BTS), base station controller (BSC), base station management system (BSM), mobile switching center (MSC), and home location register (HLR) correspond to network elements managed by the network management system. do.

U.S. Patent No. 5,513,343, "NETWORK MANAGEMENT SYSTEM", discloses a network management system according to the prior art which includes a plurality of network elements and management elements that are managed. 2 shows a schematic diagram of a network management system according to the prior art. As shown, a plurality of network elements, namely Managed Objects (MO) 114, 115, 116, 117, which are hierarchically connected to form a network 118, are communication lines 119. Is used to connect with the network management system 101. The management objects 114, 115, 116, and 117 are connected to a manager 102 of the network management system 101 through a management agent 108 and 111.

The manager 102 has a structure information file 106 and a state management area 107 for operation, and the management agents 108 and 109 are detailed information files. Detailed Information File (109) 112 and Structure Information File (110) 113 are included.

A network management system of a mobile communication network performs functions such as performance, failure, configuration, billing, and security management of a network device through a mediation device (MD), that is, a management agent of a network.

As various services for mobile communication are provided, the needs of service subscribers are gradually increased, and service subscribers are also aware that services are more diversified than in the past. As a result, there is a limit to managing a network as a single manager, which uses the concept of a management agent. As shown in FIG. 1, when a network management agent is used, network devices having different configurations for each manufacturer may be managed in a single interface.

The management agent receives the management operation of the upper manager by the standardized protocol, analyzes it, sends a management command to the network element when necessary, receives the result, and delivers the result to the upper manager. The management agent creates and manages target objects, that is, management objects, in internal memory in the form of management object instances. Each management object instance is hierarchically managed at each node of the Management Information Tree (MIT).

However, in the prior art operating as described above, when the management agent is abnormally terminated due to a hardware failure or a software abnormal state of the system or restarted for management purposes, information about a management object previously generated is lost. Could be In this case, the accumulated information is lost, and there is a great difficulty in recovering the information.

The present invention has been made to solve the problems of the prior art operating as described above, in order to recover the management information accumulated with the management object that was previously generated when the management agent is abnormally terminated or restarted by the management purpose. It is an object of the present invention to provide a method of storing, as a file in a nonvolatile memory, when a management object is created, deleted, or changed.

An object of the present invention is to provide a method for storing changes to a management object as a file in a nonvolatile memory device and recovering the original management object instance information and management information tree information based on the management agent restart. .

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention and the accompanying drawings.

1 shows a schematic diagram of a cellular system using conventional CDMA technology.

2 shows a schematic diagram of a network management system according to the prior art.

3 shows a system configuration diagram of a communication management network to which the present invention is applied.

4 is a flowchart illustrating a method of generating management information of a management agent according to the present invention.

5 is a flowchart illustrating a method for recovering management information of a management agent according to the present invention.

<Explanation of symbols for main parts of the drawings>

10: mobile switching center (MSC)

11: Public Switched Telephone Network (PSTN)

12: Home Location Register (HLR)

13: Visitor Locator (VLR)

20,21: base station controller (BSC)

30,31: base station (BTS)

40,41: mobile terminal (MS)

101: network management system (NMS)

102: manager

103: Alarm Information Coding Program

104: Failure Decision Program

105: State Management Program

106,110,113: Structure Information File

107: state management area

108,111,222: management agent

109,112: Status Information File

114,115,116,117,224: managed objects

118: network

119: communication line

210: Operational Maintenance Center (OMC)

220: arbitration device (MD)

226,232 gateway

230: network element (NE)

234: operation management processor

236: operation management database

237,238,239: Subsystem

A preferred embodiment of the method for generating management information of a management agent in the communication management network, which is invented to achieve the above object, is to manage a plurality of network elements and to match the communication manager network Q3 with a higher network manager. In the network management agent connected by

Creating a gateway for communication with a network element at initial startup;

Terminating the gateway if the management agent and the gateway of the network device are not normally connected;

If the management agent and the gateway of the network device are normally connected, determining whether there is an initialization success file generated to determine whether the operation of the management agent is in an auto-recovery state or a normal execution state;

If the initialization success file does not exist, determining the normal execution state and constructing an initial management information tree that should be created by default;

Creating an initial managed object instance;

Storing the generated management information tree and management object instance information as a recovery information file for automatic recovery;

Generating an initialization success file for automatic recovery upon restart of a management agent when the recovery information file is normally stored;

Determining whether a management object instance has changed in order to keep the contents of the recovery information file up to date; And

If the management object instance is changed, the method includes reflecting the changed management object instance and information of the management information tree in the recovery information file.

In an embodiment of the present invention, the storing of the recovery information file may include storing management information tree information in one file in order.

The storing of the recovery information file may include storing management object instance information in each file for each management object instance.

The storing of the recovery information file may include storing the recovery information file in a nonvolatile memory device.

The determining of whether the management object instance is changed may further include determining whether the management object instance is additionally generated, and reflecting the changed management object instance and information of the management information tree in a recovery information file. For example, it is preferable to change the contents of the management information tree and create a new management object instance file.

The determining of whether the management object instance has been changed may further include determining whether the management object instance has been deleted, and reflecting the changed management object instance and information of the management information tree in a recovery information file. In the process, it is preferable to change the contents of the management information tree and delete the management object instance file.

The determining of whether the management object instance is changed may further include determining whether an attribute value of the management object instance has been changed. The information on the changed management object instance and the management information tree may be restored. It is desirable to change the contents of the management object instance file.

In a communication management network according to the present invention, a preferred embodiment of a method for recovering management information of a management agent is a network management agent managing a plurality of network elements and connected by a higher network manager and communication management network Q3 matching.

Creating a gateway for communication with a network element at initial startup;

Terminating the gateway if the management agent and the gateway of the network device are not normally connected;

If the management agent and the gateway of the network device are normally connected, determining whether there is an initialization success file generated to determine whether the operation of the management agent is in an auto-recovery state or a normal execution state;

Determining the automatic recovery state if the initialization success file exists and reading the recovery information file into the internal memory to recover the management information of the management agent;

Restoring the management information tree from the recovery information file read into the internal memory;

Recovering the management object instance from the recovery information file read into the internal memory;

Determining whether a management object instance has changed in order to keep the contents of the recovery information file up to date; And

If the management object instance is changed, the method includes reflecting the changed management object instance and information of the management information tree in the recovery information file.

In an embodiment of the present invention, the process of determining whether the management object instance is changed, preferably further comprises the step of determining whether the management object instance is additionally generated, the changed management object instance and the management information tree In the process of reflecting the information in the recovery information file, it is desirable to change the contents of the management information tree and create a new management object instance file.

The determining of whether the management object instance has been changed may further include determining whether the management object instance has been deleted, and reflecting the changed management object instance and information of the management information tree in a recovery information file. In the process, it is preferable to change the contents of the management information tree and delete the management object instance file.

The determining of whether the management object instance is changed may further include determining whether an attribute value of the management object instance has been changed. The information on the changed management object instance and the management information tree may be restored. It is desirable to change the contents of the management object instance file.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

The configuration of the present invention stores the management information tree (MIT) and management object instance information generated by the management agent in the internal memory in the file system, and automatically restores each time the contents are changed, the recovery information storage process, and It consists of the process of recovering the management information tree and management object instance information from the previously saved recovery information file at the time of abnormal termination or restarting to the internal memory.

The present invention provides a network management agent having a plurality of network elements (NE) and connected by a higher network manager and communication management network Q3 matching, so that the management information on the management objects of the network elements can be stored and restored. It is about.

The management agent creates and manages information about the management object in the internal memory as the management object instance, and creates and manages the hierarchical relationship of each management object instance as the management information tree. In the present invention, the two pieces of information are stored in a nonvolatile memory, a hard driver, a nonvolatile random access memory (NVRAM), a flash ROM (Flash Read Only Memory), and the like, and the management object instance is stored. When creating, deleting, or changing attributes, the changes are saved in the management information tree file and the management object instance file to enable automatic recovery of management information.

The management agent is a flag indicating that the management information can be normally restored at restart, and it is determined by determining whether or not the initialization success file exists. The initialization success file is generated to indicate that the initialization is successfully completed when all of the management object instances that should be created by default at the initial startup are successfully created.

3 shows a system configuration diagram of a communication management network to which the present invention is applied. As shown, the management agent 222 is connected in Q3 registration with the Operation and Maintenance Center (OMC) 210 and is present in the mediation device 220. The management agent 222 generates and manages information about the management object of the network element 230 as a management object instance and a management information tree.

The management agent 222 of the arbitration device 220 is connected to the network element 230 and the gateway 226, performs a management operation performed by the operation maintenance center 210, and performs a network element ( The management information of 230 is reported to the operation maintenance center 210.

The network element 230 is connected to the mediation device 220 and the gateway 232 and is managed by the operation management processor 234. The program for operation is stored in the database 236 and has a hierarchical structure with a plurality of subsystems 237 (238) 239 underneath.

4 is a flowchart illustrating a method of generating management information of a management agent according to the present invention. Hereinafter, exemplary embodiments of the method for generating management information according to the present invention will be described in detail with reference to the accompanying drawings.

The management agent creates a gateway for communicating with the network element at initial startup (3a) and checks whether the management agent and the gateway of the network element are normally connected (3b) If not, the gateway is terminated (3c) (3a) If the gateway is normally connected, it is determined whether an initialization success file indicating whether the initialization is successful exists. (3d)

If the initialization success file does not exist, it is an initial startup state, so it constructs an initial management information tree (MIT) (3e) and creates an initial management object instance. (3f) Next, the current management information tree and management are used for automatic recovery. Save the object instance information as a recovery information file (3g) and check that all managed object instances to be created at initialization are successfully created. (3h) If the initialization is not completed normally, the process ends. If the initialization is completed normally, the initialization success file is generated to perform automatic recovery upon restart of the management agent. (3i)

5 is a flowchart illustrating a method for recovering management information of a management agent according to the present invention. Referring to the drawings, a preferred embodiment of the management information recovery method according to the present invention will be described in detail.

After the gateway is normally connected (3a), if the initialization success file exists (3d), it operates in the automatic recovery mode. Therefore, to recover management information of the management agent, the recovery information file (management information tree file, management object instance file) is read into the internal memory. (3j) The management information tree is recovered from the management information tree file read into the internal memory. , (3k) Creates managed object instances from a managed object instance file read into internal memory. (3l)

After recovery is complete, run the system normally. To keep the contents of the recovery information file up-to-date, the recovery information file is continuously updated with changes made to the management object instance and management information tree. In this case, it is determined whether additional management object instance is created, (3m) whether to delete or not, (3n) whether or not to change the attribute value of the management object. (3o) If there is a change, the management object instance and management information Reflect changes to the tree in the recovery information file (3p).

The present invention can be variously modified and can take various forms and only the specific embodiments thereof are described in the detailed description of the invention. It is to be understood, however, that the present invention is not limited to the specific forms mentioned in the detailed description of the invention, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

In the present invention operating as described above, the effects obtained by the representative ones of the disclosed inventions will be briefly described as follows.

If the management agent is abnormally terminated or restarted for management purposes, it is possible to recover previously created management objects and accumulated management information. That is, when the information about the management object is changed, the information about the management object is stored in a file in a nonvolatile memory so that the original management object instance information and the management information tree can be restored based on this when the management agent is restarted.

This prevents the loss of information about previously created managed objects and easily recovers accumulated information.

Claims (17)

In a network management agent managing a plurality of network elements and connected by a higher network manager and communication management network Q3 matching, Creating a gateway for communication with a network element at initial startup; Terminating the gateway if the management agent and the gateway of the network device are not normally connected; If the management agent and the gateway of the network device are normally connected, determining whether there is an initialization success file generated to determine whether the operation of the management agent is in an auto-recovery state or a normal execution state; If the initialization success file does not exist, determining the normal execution state and constructing an initial management information tree that should be created by default; Creating an initial managed object instance; Storing the generated management information tree and management object instance information as a recovery information file for automatic recovery; Generating an initialization success file for automatic recovery upon restart of a management agent when the recovery information file is normally stored; Determining whether a management object instance has changed in order to keep the contents of the recovery information file up to date; And If the management object instance is changed, the management information generation method of the management agent in the communication management network comprising the step of reflecting the information of the changed management object instance and management information tree in the recovery information file. The method of claim 1, wherein the storing of the recovery information file comprises storing management information tree information in a file in order. The method of claim 1, wherein the storing of the recovery information file comprises storing management object instance information in each file for each management object instance. The method of claim 1, wherein the storing of the recovery information file comprises storing the recovery information file in a nonvolatile memory device. The method of claim 1, wherein the determining whether the management object instance is changed further comprises: determining whether an additional management object instance has been created. 6. The method of claim 5, wherein the process of reflecting the changed information of the management object instance and the management information tree in the recovery information file comprises: changing the contents of the management information tree and creating a new management object instance file. How to create management information for. The method of claim 1, wherein the determining of the change of the management object instance further comprises determining whether the management object instance has been deleted. 8. The method of claim 7, wherein the reflecting the changed information of the management object instance and the management information tree in the recovery information file comprises changing the contents of the management information tree and deleting the management object instance file. How to create management information. The method of claim 1, wherein the determining of whether the management object instance is changed further comprises: determining whether an attribute value of the management object instance has been changed. 10. The method of claim 9, wherein reflecting the changed information of the management object instance and the management information tree in a recovery information file comprises changing a content of the management object instance file. In a network management agent managing a plurality of network elements and connected by a higher network manager and communication management network Q3 matching, Creating a gateway for communication with a network element at initial startup; Terminating the gateway if the management agent and the gateway of the network device are not normally connected; If the management agent and the gateway of the network device are normally connected, determining whether there is an initialization success file generated to determine whether the operation of the management agent is in an auto-recovery state or a normal execution state; Determining the automatic recovery state if the initialization success file exists and reading the recovery information file into the internal memory to recover the management information of the management agent; Restoring the management information tree from the recovery information file read into the internal memory; Recovering the management object instance from the recovery information file read into the internal memory; Determining whether a management object instance has changed in order to keep the contents of the recovery information file up to date; And If the management object instance is changed, the management information recovery method of the management agent in the communication management network comprising the step of reflecting the information of the changed management object instance and management information tree in the recovery information file. The method of claim 11, wherein the determining of whether the management object instance is changed further comprises: determining whether an additional management object instance has been created. The method of claim 12, wherein the process of reflecting the changed management object instance and the information of the management information tree in the recovery information file comprises: changing the contents of the management information tree and creating a new management object instance file. How to create management information for. The method of claim 11, wherein the determining of whether the management object instance is changed further comprises: determining whether the management object instance has been deleted. 15. The method of claim 14, wherein the reflecting the changed information of the management object instance and the management information tree in a recovery information file comprises changing a content of the management information tree and deleting the management object instance file. How to create management information. The method of claim 11, wherein the determining of whether the management object instance is changed further comprises: determining whether an attribute value of the management object instance has been changed. 17. The method of claim 16, wherein reflecting the changed information of the management object instance and the management information tree in a recovery information file comprises changing a content of the management object instance file.