KR20060028314A - Network management method for wireless lan service of subway and raiload - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a network management method for a wireless LAN service of a mobile object.

2. The technical problem to be solved by the invention

The present invention minimizes the loss caused by the failure of a moving device when servicing a wireless LAN in a subway and a train moving at high speed, and analyzes the cause of the failure in the event of failure information so as to cope with a possible system failure in the future. An object of the present invention is to provide a network management method for a wireless LAN service of a mobile device for efficiently managing resources, and a computer-readable recording medium recording a program for realizing the method.

3. Summary of Solution to Invention

The present invention provides a network management method for a wireless LAN service of a mobile station, wherein the network management system (CES) is configured to execute each mobile wireless LAN through an H-EVENT [Heartbeat Message Protocol (HMP) Event] payload data unit (PDU). H-EVENT processing step of collecting failure and / or performance information from the equipment (NE); And analyzing the cause and / or the performance of the failure of each mobile LAN device (NE) in the network management system (CES), and through the H-CONTROL [HMP control] PDU, each mobile wireless LAN device (NE) And an H-CONTROL processing step of instructing a job to be processed, and receiving a job result from the mobile WLAN device NE.                 

4. Important uses of the invention

The present invention is used for a wireless LAN service of the mobile.

Network Management System, Mobile Object, Wireless LAN, Management, H-EVENT, H-CONTROL, Failure, Performance

Description

Network management method for wireless LAN service of mobile vehicle {Network management method for wireless LAN service of subway and raiload}             

1 is an exemplary configuration diagram of a network management system for a wireless LAN service of a mobile object to which the present invention is applied;

2 is a flowchart illustrating an H-EVENT process in a network management method for a WLAN service of a mobile device according to the present invention;

Figure 3 is an embodiment procedure for the H-CONTROL process of the network management method for a wireless LAN service of the mobile according to the present invention,

4 is a flowchart illustrating an H-RESPONSE process in a network management method for a WLAN service of a mobile device according to the present invention.

* Explanation of symbols for the main parts of the drawings

101: Internet 102: gateway router (GR)

103: network management system (CES) 104: control switch (BSR)

105: layer 2 switch ((L2 Switch) _1 to (L2 Switch) _i)

106: fixed relay device ((FAS) _1 to FAS) _k)                 

107: mobile relay device (MAR)

108: Vehicle AP_1 to Vehicle AP) j)

The present invention relates to a network management method for a wireless LAN service of a mobile vehicle and a computer-readable recording medium recording a program for realizing the method. More particularly, the present invention relates to a wireless LAN service in a subway or a train moving at a high speed. In this case, it minimizes the loss due to the failure of the moving device and analyzes the cause of the failure when the failure information occurs so that it can cope with the possible system failure in the future. The present invention relates to a network management method and a computer readable recording medium storing a program for realizing the method.

Network Management System (NMS) of existing wireless LAN service has a hierarchical network management structure for monitoring and managing the operation status of AP (Access Point), which is a connection device of wireless Internet distributed nationwide. It is implemented as a system, and is used for mobile terminal users such as laptops and personal digital assistants (PDAs) using wired networks and short-range wireless networks in hot spots or homes and SOHOs where wireless Internet use layers are concentrated. In the wired / wireless integrated service that provides high-speed wireless Internet and various contents, it manages network resources efficiently to minimize the loss due to network failures, and collects network load or failure information, collects performance information of the system, and monitors status. By analyzing the cause of failure in case of failure information, possible system failure It shall provide information to the operator to cope against.

However, the fault management function of the current network management system (NMS: Network Management System) of the WLAN service performs the fault management function by using a trap function of the Simple Network Management Protocol (SNMP). In particular, since the size or amount of data delivered by the fixed access switch (FAS) and the mobile access router (MAR) is small, management through the SNMP agent has weaknesses in terms of stability. Since it is necessary to support, there is a problem in terms of cost or waste, and there is a problem in that a handoff occurs during handoff between fixed relay devices occurring during high-speed movement.

Therefore, in order to solve the above problems, a protocol operation plan for equipment management configured to provide a wireless LAN service of subways and trains is required.

The present invention has been proposed to meet the above demands, and in case of servicing a wireless LAN in a subway and train moving at high speed, it is possible to minimize the loss caused by the failure of the moving device and to analyze the cause of the failure when failure information occurs. The present invention provides a network management method for a wireless LAN service of a mobile device for efficiently managing network resources, and a computer-readable recording medium recording a program for realizing the method by enabling the system to cope with system failures. have.

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. In addition, 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 method of the present invention for achieving the above object is, in the network management method for a wireless LAN service of the mobile, the network management system through the H-EVENT [HMP (Heartbeat Message Protocol) event] payload data unit (PDU), (CES) H-EVENT processing step of collecting failure and / or performance information from each mobile LAN equipment (NE); And analyzing the cause and / or the performance of the failure of each mobile LAN device (NE) in the network management system (CES), and through the H-CONTROL [HMP control] PDU, each mobile wireless LAN device (NE) And an H-CONTROL processing step of instructing a task to be processed by the controller and receiving a task result from the mobile LAN apparatus NE.

Meanwhile, the present invention provides a network management system (CES) for each mobile wireless LAN device through an H-EVENT [Heartbeat Message Protocol (HMP) Event] payload data unit (PDU). An H-EVENT processing function to collect fault and / or performance information from (NE); And analyzing the cause and / or the performance of the failure of each mobile LAN device (NE) in the network management system (CES), and through the H-CONTROL [HMP control] PDU, each mobile wireless LAN device (NE) The present invention provides a computer-readable recording medium that records a program for instructing a task to be processed, and implements an H-CONTROL processing function in which the task result is notified from the mobile LAN apparatus NE.

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 network management system for a wireless LAN service of a mobile object to which the present invention is applied.

As shown in FIG. 1, a network management system for a wireless LAN service of a mobile object to which the present invention is applied is matched with the Internet 101, a lower control switch 104, and Gigabit Ethernet, and an IP packet ( It handles traffic of packets, performs buffering function to prevent data loss during handover between Layer 2 switches 105, and is a gateway router (GR) to support IP protocol. 102 and a network management system (CES: Central EMS Server) 103 for performing configuration management, fault management, performance statistics management, system and operator management functions as a maintenance function for the mobile relay device 107. And interworking with the layer 2 switch 105 and the upper gateway router 102 to receive and process traffic, and smoothly process and buffer the handovers occurring between the layer 2 switches 105. Article for A base station switching router (BSR) 104, a layer 2 switch for enhancing the reliability of the physical link, providing activation, maintenance, and deactivation of the link, and providing detection and control of errors to upper layers. (L2 Switch) _1 to (L2 Switch) _i) 105, using the frequency of the Industrial Scientific Medical Band (ISM) band of 2.4 GHz or 5 GHz and providing a transmission speed of 4 Mbps or more and at a traveling speed of up to 300 km / h. Fixed access switch (FAS) 106 for enabling handover, and wireless access function is the same as fixed relay device 105, and includes roaming function and L3 switching function (DHCP Server / Relay / Return function). Mobile Access Router (MAR) to provide power control, automatic frequency setting, OAM & P (Operation and Maintenance and Provisioning), and 2.4GHz or 5GHz WLAN Using the wave number for the mobile connection point now connected to the wired LAN to the wireless LAN terminal: includes (VAP Vehicle Access Point).

As described above, the present invention, the gateway router 102, the control switch 104, the fixed relay device 106, the mobile relay device 107 exchanges using the Heartbeat Message Protocol (HMP), Layer 2 The switch 105 is managed based on the Simple Network Management Protocol (SNMP). Heartbeat Message is a tool designed to provide high availability in the Linux operating system. It provides the function of detecting a failure by sending and receiving Heartbeat messages to each other in a redundant structure. Therefore, in the present invention, the heartbeat message concept is introduced to smoothly manage the network configuration equipment by detecting in real time the change of the failure state or specific state value of each network element of subway and train wireless LAN.

Here, the heartbeat is called the Heartbeat Messaging Protocol in the sense of detecting the real-time failure state of each network element constituting the subway WLAN in the context of detecting the heartbeat as the heartbeat.

On the other hand, mobile network equipment (NE (FAS / MAR)) (106/107) of the network components according to the present invention is a structure number (that is, a structure value (payment structure loaded on the payload) structure must be defined in advance Each MIB (FAS interface MIB and MAR interface MIB) corresponding to the above) is defined as follows.

1. FAS interface MIB                     

<MIB>

<Alarm, Error>

<KeepAlive, Status>

<FAS Auto Registration, Auto Delete>

<Port Status and Performance Information>                     

<S / W upgrade and restart>

<S / W Version and CES IP Settings>

<FAS basic information>

2. MAR interface MIB

<MIB>

<Alarm, Error>                     

<KeepAlive, Status>

<MAR auto registration and auto deletion>                     

<Port, Hand Over Information>

<Port performance, S / W upgrade>                     

<DHCP, Reboot, VAP, Address Usage Ratio>

<S / W version, CES IP>

<MAR basic information>

The operation of the network management method for a wireless LAN service of a mobile device according to the present invention having the above configuration will be described in detail as follows.

In order to achieve the above object, the Heartbeat Message Protocol (HMP) configuration is composed of "H-EVENT Payload Data Unit (PDU)", "H-CONTROL PDU", "H-RESPONSE PDU".

Here, the H-EVENT PDU is a PDU for transmitting configuration information (that is, transmitting information for initialization), configuration state change information, fault information, and periodic performance statistics information, and includes a flag, a serial number, and a non-conform / conform (NonConfirm). (Confirm) mode, time, IP, structure mode.

The H-CONTROL PDU is a PDU for controlling each MAR and FAS in the CES, such as configuration information initialization, ping for checking communication status with MAR / FAS, software upgrade, IP and routing information setting. The difference between the H-CONTROL PDU and the H-EVENT PDU is that the serial number field changes to "Invoke ID" and the time field is dedicated to the command field.                     

The H-RESPONSE PDU is a PDU to be used for delivering the result information after receiving and processing the response to the PING, the response to the confirm mode, and the H-CONTROL PDU. The structure of the H-RESPONSE PDU is the same as that of the H-CONTROL PDU.

HMP (Heartbeat Message Protocol) is easy to understand because the procedure of sending and receiving H-EVENT and H-CONTROL PDUs with other party is very simple.

Accordingly, when an event occurs, structure values corresponding to the structure number in the MIB are exchanged, and a detailed description thereof will be described later with the CES 103 and a mobile wireless LAN equipment (NE (FAS / MAR)). Same as above.

2 is a flowchart illustrating an H-EVENT process in a network management method for a wireless LAN service of a mobile device according to the present invention.

As shown in FIG. 2, at NE (FAS / MAR) 106/107, the CES 103 is informed to the CES 103 in the CFM mode 0 at predetermined time intervals. When the CES 103 is notified to the CFM mode 1 when it occurs (202), the CES 103 replies with a structure number <= 0 (no meaning), a message confirming that the message has been received (203) and again. Information is notified to the CES 103 at regular time intervals (204 and 205).

Here, the CFM Mode is a field for preventing PDU loss from occurring between parties using the HMP protocol. That is, when the network equipment transmits the failure or performance information to the H-EVENT, the CES 103 determines whether to deliver the H-RESPONSE by looking at the CFM Mode, and processes the EVENT appropriately in real time.

In this regard, the structure of the H-EVENT PDU is described in more detail as follows.

Here, the H-EVENT PDU transfers configuration information (purpose of information transfer for initialization), configuration state change information, failure information, and periodic performance statistics information in the NE (FAS / MAR) 106/107.

◎ More Flag: 0-no more, 1-more

◎ Sequence: Serial Number

◎ CFM Mode: NonConfirm Mode (0), Confirm Mode (1)

◎ Msg Type: CM-EVENT (1), FM-EVENT (2), PM-EVENT (3), CM-CONTROL (4), PM-CONTROL (5), CM-PING (6), CM-RESPONSE ( 7)

◎ Time: The time from 0 o'clock to the present on January 1, 1970 in seconds.

◎ IP: NE Identifier to send Heartbeat Message (IP Address)

◎ Structure Number: Structure value loaded in payload (structure to deliver event information should be defined in advance)

3 is a flowchart illustrating an embodiment of an H-CONTROL process in a network management method for a wireless LAN service of a mobile object according to the present invention.

As shown in FIG. 3, when the CES 103 instructs the NE (FAS / MAR) 106/107 to the CFM mode 1 when a specific EVENT occurs (301), the NE (FAS / MAR) 106/107 indicates this. Reply with the message Structure Number <= 0 (no meaning), confirming that the message was received (302), perform the operation as directed, and return the RESPONSE response message indicating that the indicated operation was performed. Notify (303).

On the other hand, when the CES 103 instructs the NE (FAS / MAR) 106/107 to CFM mode 0 which is the normal mode (304), the NE (FAS / MAR) 106/107 performs the operation as indicated. In step 302, a RESPONSE response message is sent to indicate that the indicated work has been performed.

That is, the CFM Mode can be divided into two cases of 0 and 1, but the meaning of CFM Mode has the same meaning as that of the H-EVENT. When sending an H-RESPOSE as an acknowledgment for the CFM mode, the SN (Structure Number) should be less than or equal to 0 to specify that the payload area is meaningless data.

In this regard, the structure of the H-CONTROL PDU is described in more detail as follows.

Here, the H-CONTROL PDU initializes configuration information to each NE (FAS / MAR) 106/107 in the CES 103, and pings for checking the communication status with the NE (FAS / MAR) 106/107. , Software upgrades, IP and routing information settings.

◎ More Flag: 0-no more, 1-more

◎ Sequence: Serial Number

◎ CFM Mode: NonConfirm Mode (0), Confirm Mode (1)

◎ Msg Type: CM-EVENT (1), FM-EVENT (2), PM-EVENT (3), CM-CONTROL (4), PM-CONTROL (5), CM-PING (6), CM-RESPONSE ( 7)

◎ Command: GET (1), SET (2), ACTION (3)

◎ IP: NE identifier to receive Heartbeat Message

◎ Structure Number: Control information structure value loaded in payload (structure for control information delivery must be defined in advance)

4 is a flowchart illustrating an H-RESPONSE process in a network management method for a WLAN service of a mobile device according to the present invention.

As shown in FIG. 4, when the CES 103 notifies the NE (FAS / MAR) 106/107 of the Structure Number <= 0 (no meaning) at regular intervals (401), the NE (FAS / MAR). 106/107 also responds 402 to the CES 103 with a RESPONSE response to the PING message with Structure Number <= 0 (no meaning). The CES 103 then determines whether or not the NE has failed in response to this message.

That is, HMP PING is used to detect the normal operation of network equipment.

In this regard, the structure of the H-RESPONSE PDU will be described in more detail as follows.

Here, the H-RESPONSE PDU is the failure of the CES 103 to determine the failure when the NE (FAS / MAR) 106/107 is a failure, the response to the CM-PING, the response to the Confirm Mode, H-CONTROL PDU Receive, process and deliver the results.

◎ More Flag: 0-no more, 1-more

◎ Sequence: Serial Number

◎ CFM Mode: NonConfirm Mode (0), Confirm Mode (1)

◎ Msg Type: CM-EVENT (1), FM-EVENT (2), PM-EVENT (3), CM-CONTROL (4), PM-CONTROL (5), CM-PING (6), CM-RESPONSE ( 7)

◎ Command: GET (1), SET (2), ACTION (3)

◎ IP: NE identifier to receive Heartbeat Message

◎ Structure Number: Value of response structure loaded in payload

◎ If structure_number> 0: PDU for passing structure value for passing result according to control information processing

◎ If structure_number <= 0: Indicates that there is no structure value, response to Confirm Mode, response PDU to CM-PING

As described above, the present invention provides a device that is necessary for providing high-speed data through a wireless terminal (laptop, PDA, Swing Phone) in a high-speed environment in subways and trains, that is, a wireless relay device capable of roaming freely, By describing a network management system capable of managing network devices supporting handover of an IP address, it is possible to constantly provide a high quality service for a WLAN service in a moving car.

Accordingly, the present invention provides a network diagram capable of viewing the network configuration at a glance, as well as elementary management system (EMS) basic functions of each network element in order to easily manage wired and wireless relay devices for subway and train WLAN services. By providing the user's convenience and making it easy to grasp the link connection relationship of each network equipment, it is possible to track the location of moving equipment as well as the fixed equipment in case of equipment failure, Anytime, anywhere access to the web server to be managed through the web.

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 minimizes the loss caused by the failure of the moving device when servicing the WLAN in the subway and the train moving at high speed, and analyzes the cause of the failure when the failure information occurs to cope with possible system failure in the future. By managing network resources more efficiently, it is possible to provide quality services to users.

Claims (6)

In the network management method for a wireless LAN service of a mobile object, H-EVENT [Heartbeat Message Protocol (HMP) Event] H-EVENT, through which the network management system (CES) collects failure and / or performance information from each mobile WLAN equipment (NE) through payload data unit (PDU). Processing step; And In the network management system (CES), the cause of failure and / or performance of each mobile LAN device NE are analyzed, and through each H-CONTROL PDU, the mobile wireless LAN device NE is analyzed. H-CONTROL processing step of instructing a task to be processed and receiving a task result from the mobile WLAN device (NE). Network management method for a wireless LAN service of the moving object comprising a. The method of claim 1, The H-EVENT PDU, Protocol data structure for delivering configuration information, configuration state change information, fault information, and periodic performance statistics. Flags, serial numbers, NonConfirm / Confirm mode, time, Internet protocol (IP), and structure. Network management method for a wireless LAN service of a mobile, characterized by having a field of the mode. The method of claim 1, The H-CONTROL PDU, Each mobile wireless LAN device in the network management system (CES) such as configuration information initialization, ping for checking communication status with each mobile wireless LAN device, software upgrade, internet protocol (IP), and routing information setting. And a protocol data structure for giving control to (NE). The method according to any one of claims 1 to 3, The H-EVENT PDU and H-CONTROL PDU, The serial number field is changed to "Invoke ID" and the time field is dedicated to the command field. The method of claim 4, wherein In the network management system (CES), After responding to ping, response to confirm mode, and receiving and processing the H-CONTROL PDU, the H-RESPONSE [HMP Response] PDU is transferred to the mobile LAN for the purpose of delivering the result information. Network management method for service. In a network management system having a processor, H-EVENT [Heartbeat Message Protocol (HMP) Event] H-EVENT, through which the network management system (CES) collects failure and / or performance information from each mobile WLAN equipment (NE) through payload data unit (PDU). Processing function; And In the network management system (CES), the cause of failure and / or performance of each mobile LAN device NE are analyzed, and through each H-CONTROL PDU, the mobile wireless LAN device NE is analyzed. H-CONTROL processing function that instructs the work to be processed and is notified of the work result from the mobile wireless LAN device (NE). A computer-readable recording medium having recorded thereon a program for realizing this.

Images