KR20000007836A - Operating and constituting management method of wireless subscriber network access system using snmp - Google Patents

Abstract

PURPOSE: A wireless subscriber network access system is provided to save the development cost of a system builder and to promote the operation convenience of the wireless subscriber network service provider. CONSTITUTION: The wireless subscriber network access system comprises the steps of: containing a radio port controller for controlling the radio port so as to wireless-access a subscriber's terminal to the radio port using electric waves in several GHz to dozens of HZ band; performing the communication between an agent and a manager by using a UDP protocol to remote-control the access environment of the radio port; informing the manager of the data object figure of the agent and the occurrence of an important event.

Description

Operation and configuration management method of wireless subscriber network access system using SNP

The present invention relates to the operation management portion of the base station operating apparatus of the wireless subscriber network access system, and more particularly, to a method of operation and configuration management of the wireless subscriber network access system using SNMP.

In the case of the code division multiple access based wireless communication environment, which is the same context as the domestic wireless subscriber network currently being developed, it was urgently used to temporarily create and use entities conforming to arbitrary protocols for each developer. There was a disadvantage that they could not be integrated with each other.

Accordingly, an object of the present invention is to apply the Simple Network Management Protocol (SNMP), a network management protocol established by a standard organization, to a wireless subscriber network access system to implement systematic network configuration and operation functions to maximize development efficiency and compatibility between systems. It is to present an operation management algorithm.

1 is a block diagram of a UDP protocol based on SNMP;

2 is an implementation environment diagram of all agents;

3 is an implementation environment diagram of a self-agent.

The present invention can be explained by dividing it into the following cases.

end. Application of SNMP Protocol to Wireless Subscriber Network System

I. Configuration of Total Agents in Wireless Subscriber Network System

All. Design Scheme of Self-Agent in Wireless Subscriber Network System

Currently, TCP / IP (Transmission Control Protocol / Internet Protocol) and SNMP are widely used by Internet equipment and software developers. Given this widespread utilization, the exclusive replacement of the OSI protocol and OSI network management protocol, which is expected to be a trend in the future, will not occur rapidly, and two network management protocols, SNMP and Common Management Information Protocol (CMIP), can be used simultaneously. There will only be. Therefore, in order to manage the recent network, the entire network management is possible only when mutual data transmission and reception between the SNMP and CMIP protocols is possible.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

end. Application of SNMP Protocol to Wireless Subscriber Network System (see Figure 1)

As shown in Fig. 1, the RPOM (base station operating apparatus) operates as an administrator for managing a radio port controller (RPC). SNMP basically communicates between agent and manager using UDP protocol. Since UDP is a connectionless transmission service that does not guarantee reliability of data transmission errors, it can have a fatal effect on wireless subscriber network service when data is lost. . In particular, the loss rate of information related to subscriber service and call processing should be 0% compared to device performance and failure information. To this end, the communication protocol should be based on UDP, but should guarantee the reliability of data by implementing the function of verifying whether data is normally transmitted from the upper applications of RPC and RPOM. Accordingly, the data transmission structure between processes is shown in FIG.

Definition of SNMP agent:

SNMP agent includes performance information such as status information on each system, self, slot and board of RPC, base station (RP: Radio Port), Radio Interface Unit (RIU), which are managed systems. It serves as an interface for delivering management information to the management system, RPOM.

The management agent refers to the systems that are connected to the network and managed, and must include an SNMP module. The management agent must transmit some or all of the management information managed by the management agent as a response to the management information transmission request from the manager, and the request and response message of the management information is generated asynchronously.

These managers and agents communicate with each other using network management protocols. SNMP provides the following main functions.

1. "Get": Used by the administrator to retrieve the information object value of the agent.

2. "Set": Used by administrator to set specific information object value of agent.

3. "Trap": used by the management agent to inform managers that an important event has occurred

Such SNMP network management is characterized by the interaction between several application entities provided by application protocols. In addition, there is a characteristic that the manager agent has a one-to-many relationship between the agent and the agent agent has the right to read and write management information values. Conversely, there is a one-to-many relationship between agents and managers, because each agent must be able to manage its own MIB and send it to multiple managers. Control of such an agent can be divided as follows.

1. Authentication Service: Agent can grant or restrict the authority necessary for the administrator to access his MIB.

2. Access Protocol: Agent can grant different authority to different administrators.

3. Proxy service: Agents can act as a proxy for other administrators, which must provide authentication services and access protocols for other systems.

The procedure for sending SNMP messages is as follows.

1. Configure PDU (Protocol Data Unit) using ASN.1 structure defined in SNMP verion 1.

2. The configured PDU is delivered to the authentication service, with the source and target addresses and the share name "name". The authentication service performs message conversion tasks such as "encrytion" and authentication code insertion as necessary.

3. The protocol entity performs the message reconstruction including the version field, the share name "name", and the message conversion value in the above process.

4. The new ASN.1 object is encoded and delivered to the transport service element over the actual network.

The procedure for receiving an SNMP message is as follows.

1. Perform error correction of the basic syntax of the message.

2. Check the version number and select only the same version as you.

3. Pass the user name, PDU block in the message, source address, target address, shared name, etc. to the authentication service.

4. If the authentication is successful, the authentication service returns ASN.1 PDU. If authentication fails, it sends a signal to the SNMP protocol entity to generate a trap message and discards the received SNMP message.

5. The protocol entity performs a basic syntax check on the PDU and discards it if there is an error. If there is no error, the protocol entity selects the appropriate SNMP connection protocol by using the shared name.

I. Configuration of Total Agents in Wireless Subscriber Network System (see Figure 2)

Sub-task: The main task of sub-agent is to communicate with other tasks through pSOS queue, and to process SNMP requests coming from RPOM using SNMP library path. Use (Queue).

1. Socket that is in charge of exchange and processing of SNMP packet with RPOM, base station management device.

2. Queue to exchange control messages such as registration / release of each self-agent

3. Queue for exchanging SNMP messages with self-agent

Error correction task: Task that manages events corresponding to trap defined in RPOM. It performs the following functions.

1. Rapidly generate fault information in RPOM through error detection task located in each self-agent and direct connection through IPC layer.

2. It delivers all fault information generated in the system to the management system RPOM in the form of a specified Management Information Base (MIB) message.

Performance Manager Task: Controls all performance related management information of RPMI implemented sub-agent and integrates with performance information of each sub-agent collected in sub-task or delivers it to RPOM independently. In this process, it operates independently of the performance detection function of the self-agent and manages the overall packet throughput of the sub-agent and the history information of bad or undelivered packets.

All. Design Scheme of Self-Agent in Wireless Subscriber Network System (see Fig. 3)

The self-agent is located in the link control unit (LCU) of the same self through the RPMI and parallel bus where the sub-agent is located, and the ALCU that handles the management functions for all boards in the other self through the IPC layer using the serial path. Collect management information using (Alarm & Link Control Unit) and RMCU (RPC main control unit). At this time, each self-agent has its own MIB according to the self-management information characteristics of each self, and sends a control message to confirm the management information to the sub-agent upon initialization. In addition, the self-agent implements basically as many LCUs as connected to the ALCU located in each self.

Self-Agent Task: Main agent of self-agent has self-managed MIB to manage and handles SNMP requests from sub-agents using SNMP library path. In addition, communication is performed through the queue provided by other tasks and pSOS, and it has two queues as follows.

1. A queue that registers the self-agent itself by exchanging control messages when initialization or management information is changed.

2. Queue to control performance detection function and exchange SNMP packet defined in MIB with subagent.

An administrator is a system that provides a user interface for network management users. It performs the following functions.

1. Management application for data analysis, error recovery, etc.

2. User interface for network manager to monitor and control network

3. The function of interpreting the request of the network manager and converting it into the monitoring and control of the remote system connected to the network

4. Database of information extracted from MIB of network management object

The present invention as described above, by applying the generalized SNMP protocol that can be used as a standard to the wireless subscriber network access system, it is convenient to reduce the development cost of the system builder and the operation of the wireless subscriber network service provider by the universalization of equipment It is effective to provide flexibility in future expansion of the system.

Claims (7)

Based on the code division multiplexing method, wireless communication between a base station controller (RPC) and a base station management apparatus (RPOM) capable of controlling a base station can be performed so that a base station using a radio wave of several tens of Hz band and a subscriber station can be wirelessly connected based on a code division multiplexing scheme. In order to perform, Bi-directional data communication method of a wireless subscriber network access system, characterized in that to remotely control the connection environment of the base station using SNMP (Simple Network Management Protocol). The method of claim 1, The SNMP basically communicates between the agent and the manager using a UDP protocol. The method of claim 2, SNMP has two main functions: Get (used by the administrator to look up the value of the agent's information object), Set (set by the administrator to set the value of the agent's specific information object), and trap ( The management agent is used to inform the administrator that an important event has occurred). The method of claim 3, The relationship between the manager and the agent has a one-to-many relationship, and conversely, there is a one-to-many relationship between the agent and the managers. The method of claim 4, wherein Control of the agent is a bidirectional data communication method of a wireless subscriber network access system, characterized in that it comprises an authentication service, access protocol, proxy service. The method of claim 5, As a procedure for sending SNMP messages, Configuring a protocol data unit (PDU) using the ASN.1 structure defined in SNMP verion 1. The configured PDU is delivered to the authentication service, where the source and target addresses and the share name are delivered together, and the authentication service performs message conversion operations such as encryption and authentication code insertion as necessary. The protocol entity may be configured to perform a message reconstruction operation including a version field, a share name "name", and a message conversion value in the above process. A new ASN.1 object is encoded and delivered to a transport service element over a real network. The method of claim 6, As a procedure for receiving the SNMP message, Performing error correction on the basic syntax of the message, Checking the version number to select only the same version as you, Delivering a user name, a PDU block in the message, a source address, a target address, and a shared name to the authentication service; If the authentication is successful, it returns an ASN.1 PDU, and if authentication fails, send a signal to the SNMP protocol entity to generate a trap message, and discard the received SNMP message; The protocol entity performs a basic syntax check on the PDU and discards it when an error occurs. If there is no error, the protocol entity selects an appropriate SNMP connection protocol by using a shared name. Communication method.