KR20060065455A - A efficient network management apparatus in the mobile broadband interactive satellite access system - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a network management device in a mobile broadband bidirectional satellite access system.

2. The technical problem to be solved by the invention

The present invention provides a mobile broadband for more efficiently managing a network by smoothly collecting management target information for each module that is a system component using an appropriate communication interface according to the characteristics of the module where the SNMP agent is located and the collected data. Its purpose is to provide a network management device in a two-way satellite access system.

3. Summary of Solution to Invention

The present invention provides a network management apparatus for a mobile broadband bidirectional satellite access system, comprising: information providing means for texturing and image-forming configuration information and shape information of each node for an interactive multimedia service through a satellite to an operator; Fault and alarm management means for analyzing fault and alarm information reported through the system and delivering the result to the operator; After receiving a system configuration management request message from the information providing means, the hardware information necessary for operating the system is registered, deleted, changed and retrieved through a database according to the content of the message, or for transmitting a message to a central station and / or a terminal station. Shape and state management means; Resource display means for visually showing the usage status of the resource allocated by the dynamic resource manager and DVB-S-based connection table information to the operator in a text format or visually; Subscriber management means for registering a new subscriber through the information providing means and retrieving registered subscriber information (change and termination); Authentication management means for verifying an account and a password according to a request for access from an operator to verify whether the user is a correct operator; And a message for requesting information to be managed with a Simple Network Management Protocol (SNMP) agent of each module and a message for setting initialization information of each module, and a response message according to a request for management target information from the SNMP agent. And SNMP management means for receiving error messages according to module operation.

4. Important uses of the invention

The present invention is used for mobile broadband two-way satellite access system.

Satellite communication, mobile broadband bidirectional satellite access system, network management device, mobile broadband access network, SNMP, UDP

Description

AEfficient Network Management Apparatus in the Mobile Broadband Interactive Satellite Access System

1 is an exemplary configuration diagram of a mobile broadband bidirectional satellite access system to which the present invention is applied;

2 is a configuration diagram of an apparatus for managing a network in a mobile broadband bidirectional satellite access system according to the present invention;

3 is an exemplary view illustrating a communication process between a network management apparatus and a terminal station in a mobile broadband bidirectional satellite access system according to the present invention;

4 is an exemplary view showing a communication process between a network management apparatus and a central station module supported with Ethernet in a mobile broadband bidirectional satellite access system according to the present invention;

FIG. 5 is an exemplary diagram illustrating a communication process between a network management apparatus and a central station module / equipment not supported with Ethernet in a mobile broadband bidirectional satellite access system according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: central station 20: network management device

30: terminal station 201: user interface (UI)

202: failure and alarm management unit 203: shape and state management unit

204: resource display unit 205: subscriber management unit

206: certification management unit 207: billing management unit

208: Statistics Manager 209: SNMP Manager

210: UDP manager 211: database

The present invention relates to a network management apparatus in a mobile broadband bidirectional satellite access system, and more particularly, to a simple network management protocol (SNMP) manager in a network management module and an SNMP agent located in each module or device. The present invention relates to a network management apparatus in a mobile broadband bidirectional satellite access system for collecting, managing, and operating target information through an SNMP communication interface, a UDP (User Datagram Protocol) interface, and a serial communication interface.

Satellite communication systems are characterized by high utilization efficiency due to long transmission delay time and limited transmission resources. Therefore, it is necessary to find a way to increase the use efficiency of the user's Internet traffic by reducing the generation of traffic for control and management except the actual user Internet traffic as much as possible.

In the existing network management system, when collecting managed information using SNMP, a standard protocol, the SNMP manager requests information about managed objects to be collected, and the SNMP agent attaches and transmits information about managed objects. In this way, the network management module has no restriction on each module in the central station and its transmission resources, so it does not affect the Internet transmission quality by communicating via SNMP. As the transmission resources of the return link are limited in communication, most of the communication channels are occupied by control and management data, which not only significantly reduces the resource utilization efficiency but also results in deterioration of the performance of the entire system.

In addition, since configuration and state management of RF equipment and some commercial equipment without Ethernet interface are difficult to manage, the management of them is excluded, so that the equipment or modules that become the single path of the system fail. ), There is a problem that this may cause a failure (fail) throughout the system.

On the other hand, the existing technology is difficult to construct and manage the network management system and can be applied to other systems by constructing a unique network management system in an individual system without applying a protocol such as a vast telecommunication management network (TMN) or applying a standard protocol. Not only is there a problem that is not easy to manage.

The present invention has been proposed to solve the above problems, by smoothly collecting the management target information for each module that is a system component by using the appropriate communication interface according to the characteristics of the module and the data collected SNMP agent, An object of the present invention is to provide a network management device in a mobile broadband bidirectional satellite access system for more efficient network management.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The present invention for achieving the above object, in the network management device in a mobile broadband bidirectional satellite access system, for providing the operator with the configuration information and shape information of each node for the two-way multimedia service via the satellite text and image Information providing means; Fault and alarm management means for analyzing fault and alarm information reported through the system and delivering the result to the operator; After receiving a system configuration management request message from the information providing means, the hardware information necessary for operating the system is registered, deleted, changed and retrieved through a database according to the content of the message, or for transmitting a message to a central station and / or a terminal station. Shape and state management means; Resource display means for showing to the operator a usage status of resources allocated by the dynamic resource manager and DVB-S based connection connection table information in a text format or visually; Subscriber management means for registering a new subscriber through the information providing means and retrieving registered subscriber information (change and termination); Authentication management means for verifying an account and a password according to a request for access from an operator to verify whether the user is a correct operator; And a message for requesting information to be managed with a Simple Network Management Protocol (SNMP) agent of each module and a message for setting initialization information of each module, and a response message according to a request for management target information from the SNMP agent. And an SNMP management means for receiving an error message according to the module operation.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary configuration diagram of a mobile broadband bidirectional satellite access system to which the present invention is applied.

As shown in FIG. 1, a mobile broadband bidirectional satellite access system to which the present invention is applied includes a single central station access subsystem (SNG) and a plurality of mobile terminal subsystems (SMT). Terminal (30), the central station connection subsystem (10) is a satellite network resource management module (NMM) (hereinafter referred to as network management device) 20, the dynamic resource management module (DRM) Dynamic Resource Manager (40), IP Encapsulator (100), ReMUX (101), NCR Insertion Module (NIM: Network clock Insertion Module) (102), DVB-S Modulator (103) And a Receive IF Module (WIM: Wide IF Module) 104, a Return Link Demodulator (RLD) 105, and a Rx Data Processing Module (RDP) 106. The terminal subsystem 30 includes a forward link Rx module (FRM) 301 and a TDMA Tx Module (TTM) 302. ), And a data processing module (DPM) 302.

In the backbone network, the IP information transmitted through the router converts the IP packet into an MPEG2-TS stream through the IP encapsulator 100, thereby converting the video information (A / V signal) input from the broadcast studio or the server into the MPEG2-TS stream. After the TS-encoded signal is combined with the REMUX 101, the NIM 102, which generates and reinserts network clock information provided to the terminal, passes through the NIM 102 to the DVB-S modulator 103 to transmit the RF equipment of the central station. And to the mobile terminal subsystem 30 via an antenna. The mobile terminal subsystem 30 converts the RF signal received by the mobile station antenna from the satellite into an MPEG2-TS signal through the FRM 301, converts the dual user traffic signal into an IP packet, and delivers it to the user PC, The signaling signal is transmitted to the DPM 303 to extract resource allocation information of the return link, and then the IP packet from the user's PC is converted into an ATM cell or an MPEG2-TS stream and transmitted to the TTM 302. In 302, these ATM cells or MPEG2-TS streams are loaded on a channel allocated by the DRM 40 of the central station access subsystem 10 to be modulated and encoded so that the RF equipment, antennas, and satellites of the mobile terminal subsystem 30 are modulated and encoded. To the central station connection subsystem (10). The return link signal received by the antenna and the RF equipment of the central station converts the RF signal into an IF signal through the WIM 104 and demodulates and decodes the signal through the RLD 105 to obtain an ATM cell or MPEG2-TS stream. The user traffic information is converted into an IP signal through the RDP 106 and transmitted to the backbone network through the router, and the control information is transferred from the RLD 105 directly to the DRM 40. At this time, the DRM 40 is a module for allocating resources of the return link and generating / providing / managing signaling signals, and the NMM 20 information performs a management function for a configuration module of a system according to the present invention.

Here, the NMM 20 performs a function necessary for the operator to manage the system through SNMP, a standard network management protocol, from the equipment and modules constituting the mobile broadband bidirectional satellite access system, and reports the result to the operator. Do it. That is, the NMM 20 performs the main functions as shown in FIG. 2 to be described later, and through these functions, each component module of the DRM 40, the central station connection subsystem 10, and the mobile terminal subsystem 30 in real time. In addition, a monitoring function can be provided so that the operation status of the equipment can be identified at a glance.

2 is a diagram illustrating an embodiment of a network management apparatus in a mobile broadband bidirectional satellite access system according to the present invention.

As shown in FIG. 2, the network management apparatus (NMM) 20 in the mobile broadband two-way satellite access system according to the present invention includes each node constituting a mobile broadband two-way satellite access network for two-way multimedia service through a satellite. User interface unit 201 for providing text and images of the configuration information and shape information to the operator, the central station (SNG) 10 or the terminal station (SMT) 30, RF (Radio Frequency) equipment is reported Analyze all failures and alarm information, determine the location of failure, information of failure, urgency, etc. when a failure occurs, and deliver the result to the operator, failure and alarm management unit 202 for outputting failure information for each module And after receiving the system configuration management request message from the user interface unit 201, the configuration hardware information of the system required for operating the system according to the message content The configuration and state management unit 203 for registering, deleting, changing, and searching through the database 211 or for transmitting a message to the corresponding module or terminal station 30 of the central station 10 and the dynamic resource manager 40 to the operator. Resource registration unit 204 for displaying the resource usage status and DVB-S-based connection connection table information allocated in < RTI ID = 0.0 >) < / RTI > The subscriber management unit 205 for changing and canceling the user information and retrieving the currently registered subscriber information, and requesting access from the operator to the network management device 20, verifying the account and password to authenticate whether the user is the correct operator. Resource management information for the user generated by the dynamic resource manager 40 and the data processing module of the terminal station 30 A billing management unit 207 for receiving and storing resource usage information in a database 211, a statistics management unit 208 for creating and managing statistical data data of a network based on statistical raw data generated in each module; Sends a message for requesting the SNMP agent and management information of each module, and a message for setting the initialization information of each module, the response message according to the request of the management target information from the SNMP agent and the error of the module operation An SNMP manager 209 for receiving a message and a UDP manager 210 for transmitting data not suitable for an SNMP communication message format through general UDP communication are provided.

At this time, if a module-specific SNMP agent is installed in each module of the central station 10 and the terminal station 30, the agent responds to the corresponding object identification number (OID: Object ID) according to the request of the SNMP manager 210 Send a message or an error message of its own module.

The configuration of the network management apparatus in the mobile broadband bidirectional satellite access system according to the present invention having the structure as described above will be described in detail as follows.

The shape and state management unit 203 can manage the overall configuration information constituting the mobile broadband two-way satellite access system and the system of the management target system at a glance, and reflect the failure information that is notified in real time to the entire configuration. Allow the operator to respond quickly.

The resource display unit 204 can only modify, change, or delete the operator except for the operator of the dynamic resource manager 40 by performing only a read function.

The subscriber manager 205 is operated with the dynamic resource manager 40.

In the billing management unit 207, billing is collected and stored in units of time for the operator's account, and the billing time represents the time from the user requesting connection to the disconnection time in seconds.

In the statistical management unit 208, the failure statistics data is stored in the database 211, so that the operator can search by month, day at the desired time.

In order to implement the above functions, the interface necessary for communication between the network management device and other modules considers communication method through SNMP, UDP communication, and serial port, and each has the following characteristics.

1) Network management method using SNMP

The network management device operating in the mobile broadband two-way satellite access system is a SNMP PDU that transmits status, configuration information, and other management information through the SNMP protocol from the dynamic resource manager, return link demodulator, and RF / antenna equipment and terminal stations. It is delivered through Protocol Data Unit and requests and control information about it is delivered to the device through SNMP PDU.

In addition, it provides functions such as failure, performance, configuration, and statistics, which are general network management functions, and provides operator matching functions.

On the other hand, the network management device must manage and operate hundreds or thousands of terminal stations, but instead of checking periodic status and statistical information through the SNMP manager in consideration of the very limited resource capacity of the satellite rather than other communication media. In order to improve the utilization efficiency of satellite resources by adopting a method to reflect the change by notifying the network management module when there is a change of the module by using SNMP trap information.

2) Network management method using UDP communication

The dynamic resource manager constituting the mobile broadband bidirectional satellite access system manages a large amount of resource allocation information and connection control information of the system. This information is transmitted in one direction from the dynamic resource manager to the network management module. In order to use trap information, which is the only one-way message from the SNMP agent of the dynamic resource manager to the SNMP manager of the network management device, the message is not used. Bad in terms of type and efficiency Therefore, for the sake of communication efficiency, data that is not suitable for SNMP communication message format is transmitted through general UDP communication.

3) Network management method of module that does not support Ethernet communication

Network management functions for modules that do not support communication via Ethernet interface, such as RF equipment, antennas, and other commercial equipment, have an SNMP proxy server, and communication between modules uses serial communication such as RS-232, and SNMP proxy. The server and the network management device collect data through SNMP communication.

3 is an exemplary diagram illustrating a communication process between a network management apparatus and a terminal station in a mobile broadband bidirectional satellite access system according to the present invention, wherein the SNMP agent 210 of the network management apparatus determines whether data is changed by an SNMP agent in the terminal station. ) Shows the process of collecting data irregularly from the network management device.

4 is an exemplary diagram illustrating a communication process between a network management apparatus and a central station module supporting Ethernet in a mobile broadband bidirectional satellite access system according to the present invention. The manager shows the process of transmitting information by UDP communication.

FIG. 5 is an exemplary view illustrating a communication process between a network management apparatus and a central station module / equipment that is not supported with Ethernet in the mobile broadband bidirectional satellite access system according to the present invention. It shows the process.

Accordingly, the present invention has defined a function and structure for an SNMP-based network management apparatus that can efficiently manage the subsystems, modules, and equipment of the central station and terminal stations constituting the mobile broadband bidirectional satellite access system. Network management device target information through SNMP communication interface, UDP communication interface, and serial communication interface between SNMP manager in device and SNMP agent located in each module or RF equipment through appropriate communication interface according to the characteristics of managed module and managed information. By collecting, managing, and operating the data, there is an advantage to increase the utilization efficiency of limited satellite communication resources.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention provides various interfaces according to the management target module and the target management information to avoid excessive header generation of SNMP, and the terminal manager can collect information only when the management target information changes. By doing so, there is an effect of increasing the utilization efficiency of the limited resources of the return link.

That is, according to the present invention, by using the UDP communication method, the connection control table information and the resource allocation information managed by the dynamic resource manager of the central station can avoid excessive SNMP header generation, thereby reducing the waste of resources. Instead of collecting data from the SNMP manager in a periodic polling manner, by using a trap message to notify the SNMP manager when the management information of the terminal station changes, it reduces the occurrence of control and management traffic. There is an effect that can increase the traffic usage efficiency of the user.

In addition, the present invention provides a separate SNMP proxy server on another PC to manage the RF equipment and some commercial equipment without the Ethernet interface, thereby collecting the management information of the RF equipment and some commercial equipment, the module of the entire system And state management and control of the equipment.

Claims (7)

A network management apparatus in a mobile broadband bidirectional satellite access system, Information providing means for texturing and image-forming configuration information and shape information of each node for an interactive multimedia service through a satellite to an operator; Fault and alarm management means for analyzing fault and alarm information reported through the system and delivering the result to the operator; After receiving a system configuration management request message from the information providing means, the hardware information necessary for operating the system is registered, deleted, changed and retrieved through a database according to the content of the message, or for transmitting a message to a central station and / or a terminal station. Shape and state management means; Resource display means for showing to the operator a usage status of resources allocated by the dynamic resource manager and DVB-S based connection connection table information in a text format or visually; Subscriber management means for registering a new subscriber through the information providing means and retrieving registered subscriber information (change and termination); Authentication management means for verifying an account and a password according to a request for access from an operator to verify whether the user is a correct operator; And Sends a message for requesting Simple Network Management Protocol (SNMP) agent of each module and information to be managed, a message for setting initialization information of each module, and a response message according to the request of management target information from the SNMP agent. SNMP management means for receiving error message according to module operation Network management device in a mobile broadband bidirectional satellite access system comprising a. The method of claim 1, UDP management means for transmitting data inappropriate for SNMP communication message format through general User Datagram Protocol (UDP) communication Network management device in a mobile broadband bidirectional satellite access system further comprising. The method of claim 1, Billing management means for receiving detailed resource allocation information for the user generated by the dynamic resource manager and resource usage information actually used by the terminal station and storing the received resource usage information in the database; And Statistical management means for creating and managing statistical data data of the network based on the statistical raw data generated in each module Network management device in a mobile broadband bidirectional satellite access system further comprising. The method according to any one of claims 1 to 3, The network management device, In order to collect the network control and management information by installing the SNMP agent in the module, the equipment and the terminal station of the central station, the SNMP communication interface according to the characteristics of the module and the collected data is located; Network management device in a mobile broadband bidirectional satellite access system, characterized in that using the UDP communication interface and serial communication interface. The method of claim 4, wherein The SNMP management means, Collect network management information in a polling manner with SNMP agents located in modules such as the dynamic resource manager, the return link demodulator, the return link data processor, and the network synchronizer insertion module, which are the configuration modules of the central station, With the SNMP agent in the terminal station, the terminal station monitors whether or not the object information to be collected changes, and informs the SNMP manager of the central station only when it changes irregularly so that the network management device can collect the information. Network management device in a mobile broadband bidirectional satellite access system, characterized in that. The method of claim 5, wherein The network management device, In order to manage the shape and state of RF equipment or commercial equipment that does not support the Ethernet interface constituting the mobile broadband bidirectional satellite access system, an SNMP proxy server is installed in the PC which supports Ethernet, so that the modules are serially connected. Collecting data by communication, the network management device in a mobile broadband two-way satellite access system, characterized in that the transfer to the SNMP management means by changing the SNMP message format. The method of claim 6, The network management device, Network management device in a mobile broadband two-way satellite access system, characterized in that receiving and managing the necessary data by the UDP communication method and showing it as a user screen.

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