KR20090043099A - Network management method and system based on a geographical location information - Google Patents

Abstract

According to the present invention, a communication network including a sensor network and an internet network analyzes information up to the lowest node of each network based on geographical location information, and collects and manages information of each node distributed based on the geographical location information. As a location information-based network management method and network management system,

According to the present invention, there is provided a network management method based on geographical location information, the method comprising: (a) registering, by a sensor node, node information with an access point; (b) storing, by the access point, the node information registered from the sensor node, and transmitting access point holding information including the node information to a management server; (c) the management server storing the access point possession information; (d) a client terminal accessing the management server to request the node information; (e) when the user selects a specific access point, the client terminal directly accesses the access point based on the access point information sent from the management server; And (f) the client terminal receiving the node information from the connected access point.

Sensor node, geolocation, network, ad hoc, AP, management server, client

Description

Network management method and system based on geographical location information

The invention includes Bluetooth or Infrared Data Association (IrDA), Wireless LAN (IEEE 802.11), Shared Wireless Access Protocol (SWAP), Wireless Personal Area Network (WPAN), Home Network, etc. The present invention relates to a network management method and system based on geographical location information in a local area communication network or an Internet network using an Internet protocol.

In general, a mobile ad hoc network (MANET) in a short-range communication network refers to a network capable of transferring data between mobile nodes having no underlying communication base.

The connection between mobile nodes in a mobile ad hoc network is achieved using a peer-to-peer level multi-hopping technique. This technology has many challenges to be solved because the network topology can change dynamically and must be self-forming and self-healing. Ad-hoc routing in mobile ad hoc networks is of critical importance and is a technology that must be supported before any application can be deployed in a mobile ad hoc network. In addition, route discovery of ad hoc routing is a key technology for forming mobile ad hoc networks.

In the method of forming a mobile ad hoc network, route discovery, that is, routing path search, is performed by the source node when there is no information on the destination node when the source node wants to communicate with the destination node. At this time, all nodes in the ad hoc network maintain and manage only routing path information with data transfer in the routing table. The source node that needs data delivery finds the shortest path to the destination node through the routing path search process on demand.

On the other hand, the sensor network of the short-range communication network has its own computing power and consists of a number of nodes having a sensor that can communicate with other nodes. Each node in the sensor network can collect information such as temperature, barometric pressure, and humidity through sensors attached to the node, and can perform self-analysis of information obtained from the sensor through its own calculation capability. In addition to the raw results obtained from the sensors, the results of the analysis can be centralized to several nodes in the network through the communication of each node. In addition, although each sensor node may collect information at a fixed location, it may have mobility due to rapid environmental change. Thus, sensor networks need sensors and communication equipment that can collect data and communicate with other nodes, and routing protocols that can help communicate between sensor nodes and applications that can analyze information obtained by sensors. Do. In addition, since sensor networks have many similarities with ad hoc networks that have mobility management and peer-to-peer communication, the techniques for routing protocols for the mobility management and data transmission paths of sensor networks have been developed. It leads from.

In addition, sensor nodes may be applied depending on the function of the sensor. For example, it can be used for fire detection, freezing detection, flooding detection, pedestrian detection, load detection, and road damage detection capability depending on the situation in the danger area such as inside the tunnel, on the bridge, and the curve road.

However, in the above-described ad hoc network or sensor network, the location information is assigned only to the top node or the sink node, and the location information is not assigned to the lower nodes, so that the network construction and operation cannot be efficiently performed.

In addition, the system has only a certain node having local information, and the range of information is too large to utilize the local information for the entire network including the specific node, so that the accuracy of the detailed information is inferior, and a system capable of providing such detailed services. In order to express accurate geographic information, there is a problem in that separate geographic information is included in the data or the position is determined by mounting a GPS (Global Position Service) device.

In order to solve the above problems, the present invention analyzes the information up to the lowest node of each network based on the geographical location information in the communication network including the sensor network and the Internet network, and based on the information of each node distributed It is an object of the present invention to provide a network management method and system based on geographic location information by collecting, organizing, and processing a user to provide a service utilizing geographic location information by using a network address.

According to an aspect of the present invention, there is provided a method for managing a geographical location information based network, comprising: an access point for managing a plurality of sensor nodes having a network address based on geographical location information; A management server that manages the access points located in each region; And a client terminal accessing the management server, the method comprising: (a) registering, by the sensor node, node information with the access point; (b) storing, by the access point, the node information registered from the sensor node, and transmitting retention information including the node information to the management server; And (c) the management server storing and managing the retention information.

And d) the client terminal accessing the management server to request the node information; And (e) providing, by the management server, the node information requested by the client terminal to the client terminal based on the holding information.

The node information may include geographic location information, sensor value, ID information, and routing information of the sensor node, and the geographic location information and sensor value of the sensor node may be optionally included in the node information and transmitted. Done.

The holding information of the management server includes the node information registered from each access point, the geographic location and ID of the access point, for a plurality of access points storing the node information registered from the sensor node. ID) is included.

In addition, after the step (c), the access point and the sensor node maintain a connection, and whenever the node information is changed, the sensor node periodically transmits the changed node information to the access point, thereby providing the node information. Will be updated.

In addition, after the step (c), the access point and the sensor node maintain a connection, and the access point periodically requests the sensor node to change the node information to update the node information. (Update).

In addition, the step (d) provides a menu for providing initial screen information on management of the sensor node to the client terminal to which the management server is connected, and the client terminal requesting the node information from the initial screen information. Will be chosen.

In addition, the initial screen information includes a map image on which the access point is displayed.

Further, after the step (b), the access point maintains a connection with the management server, and when the node information is changed or when the retention information is changed, the changed information is transmitted to the management server. The retention information is updated.

In the step (d), the management server opens a socket through a part that is in charge of connecting to the client terminal, sets a port number to connect to, and starts an accepting connection. When the connection is received, and transmits the map image and the corresponding information according to the geographic location information to the client terminal, generates an infinite loop for receiving a command, and receives the command from the client terminal On the basis of this, the search command, the history command, or the remote call command can be executed.

On the other hand, the geographical location information based network management method according to the present invention for achieving the above object, an access point for jurising a plurality of sensor nodes having a network address based on the geographical location information; A management server that manages the access points located in each region; And a geographic location information based network management method of a system comprising a client terminal accessing the access point or the management server, the method comprising: (a) registering, by the sensor node, node information with the access point; (b) storing, by the access point, the node information registered from the sensor node, and transmitting retention information including the node information to the management server; (c) the management server storing the retention information; (d) the client terminal accessing the management server to request the node information; (e) if the node information requested by the client terminal is not present in the holding information, providing the access point information to the client terminal by the management server to manage the node information; (f) the client terminal directly accessing the access point based on the access point information; And (g) the client terminal receiving the node information from the connected access point.

In the step (a), the sensor node opens a communication socket and connects to the access point, and registers each sensor connected to the sensor node to the access point.

In addition, in the step (b), the access point opens a socket through a part that is in charge of connecting to the sensor node, sets a port number to connect to, and starts an accepting connection. Generates an infinite loop for receiving a command when a connection is received, and upon receiving the command from the sensor node, determines whether the sensor node is a new node or needs to update an old node, You will either update or register a new one.

In the step (b), the management server opens a socket through a part that is in charge of connecting to the access point, sets a port number to connect to, and starts an accepting connection. Generate an infinite loop for receiving a command when the connection is received, and determine whether the access point is a new access point or update an old access point when receiving the command from the access point, You will either update or register a new one.

On the other hand, the geographical location information based network management method according to the present invention for achieving the above object, an access point for jurising a plurality of sensor nodes having a network address based on the geographical location information; A management server that manages the access points located in each region; And a client terminal accessing the access point or the management server, the method comprising: (a) the sensor node opening a communication socket to access the access point and connected to the sensor node; Registering node information including information of each sensor with the access point; (b) storing, by the access point, the node information registered from the sensor node, and transmitting retention information including the node information to the management server; And (c) the management server storing the retention information.

In the step (a), the node information including geographic location information, ID information, sensor value, and routing information of the sensor node is registered in the access point.

In addition, the retention information includes an ID (ID) and geographical location information of the access point.

In addition, in the step (b), the access point opens a socket through a part that is in charge of connecting to the sensor node, sets a port number to connect to, and starts an accepting connection. Generate an infinite loop for receiving a command when the connection is received; and when receiving the command from the sensor node, determine whether the sensor node is a new node or update an old node, and update the sensor node. Or register a new one.

In the steps (b) and (c), the management server opens a socket through a part in charge of the connection with the access point, sets a port number to connect to, and starts accepting a connection. Create an infinite loop for accepting a connection, create an infinite loop for accepting a command when a connection is received, and receiving the command from the access point indicates whether the access point is a new access point or needs to update a previous access point In this case, the access point is updated or newly registered.

On the other hand, the geographical location information based network management method according to the present invention for achieving the above object, an access point for jurising a plurality of sensor nodes having a network address based on the geographical location information; A management server that manages the access points located in each region; And a geographic location information based network management method of a system comprising a client terminal accessing the access point or the management server, the method comprising: (a) the sensor node opening a communication socket, connecting to the access point, and connected to the sensor node; Registering node information including information of each sensor with the access point; And (b) when the access point opens a socket to the sensor node, sets a port number to connect the sensor node to establish a connection with the sensor node, and receives the node information from the sensor node. And storing and managing node information.

In addition, the geographic location information-based network management method according to the present invention, the access point for managing a plurality of sensor nodes having a network address based on the geographic location information; A management server that manages the access points located in each region; And a geographic location information based network management method of a system including a client terminal accessing the access point or the management server, the method comprising: (a) the client terminal accessing the management server and selecting an arbitrary access point to obtain node information; Requesting; (b) the management server providing the client terminal with information of an access point that manages the requested node information; (c) directly accessing the access point based on the information of the access point provided by the client terminal; And (d) the client terminal receiving and managing the node information from the connected access point.

In addition, the access point information includes geographic location information of the access point and a connection path of the access point.

In addition, the node information includes search information, history information, or remote call information for the sensor node.

The node information includes geographical position information, ID information, sensor value, and routing information of the sensor node.

On the other hand, a geographical position information based network middleware system according to the present invention for achieving the above object, a plurality of sensor nodes having node information based on the geographical position information; An access point for registering the node information from the plurality of sensor nodes; A management server that manages the access points located in each region and receives and manages access point information including the node information from a plurality of the access points; And a client terminal connected to the management server or the access point to receive the node information.

When the client terminal is connected to the management server, the client terminal receives initial screen information on the management of the sensor node from the management server, and selects a menu requesting the node information from the initial screen information.

In addition, the initial screen information includes a map image on which the access point is displayed.

In addition, the sensor node opens a communication socket to connect to the access point, and registers node information including information of each sensor connected to the sensor node to the access point.

The access point stores the node information registered from the sensor node, and transmits the access point information including the node information, geographical position information of the access point, and an access path of the access point to the management server. Will be delivered.

In addition, the management server opens a socket through a portion in charge of the connection with the access point, sets a port number to connect to, creates an infinite loop for accepting a connection while starting accepting a connection, Upon receipt of the command, an infinite loop is generated to receive the command, and upon receiving the command from the access point, it is determined whether the access point is a new access point or whether the previous access point needs to be updated, and the access point is updated or newly registered. do.

In addition, the access point opens a socket through a portion in charge of the connection with the sensor node, sets a port number to connect to, creates an infinite loop for accepting a connection while starting accepting a connection, Upon receipt of the command, an infinite loop is generated to receive the command. When the command is received from the sensor node, it is determined whether the sensor node is a new node or an old node to be updated, and the sensor node is updated or newly registered.

In addition, the node information includes search information, history information, or remote call information for the sensor node.

The node information includes geographic location information, ID information, sensor value, and routing information of the sensor node.

The client terminal acquires history information through a middleware program that manages the node information from the sensor node or the access point information from the access point, thereby alerting, providing information, checking, detecting, It will perform functions including security, tracking, and career prediction.

On the other hand, the geographical location information-based network middleware terminal according to the present invention for achieving the above object, the intermediate node jurisdiction of a plurality of nodes having node information based on geographic location information or the intermediate nodes located in each region jurisdiction A communication connection unit for connecting with a management server; A display unit for displaying initial screen information received from the management server connected through the communication connection unit on a screen; A function of accessing the intermediate node or the management server through the communication connection unit, requesting the node information from the connected intermediate node or the management server, and receiving the node information from the intermediate node or the management server; Middleware processing unit; An input unit for receiving a request command of the node information from a user; And a controller configured to control access to the intermediate node and the management server, request of the node information, and reception of the node information.

The middleware processor may be configured to receive initial screen information on management of the node from the management server when selecting the management server, and to select a menu for requesting the node information according to a user's operation from the initial screen information. do.

Here, the initial screen information includes a map image on which the intermediate node is displayed, and the node information includes geographic location information, ID information, sensor value, and routing information of the sensor node. The node information includes search information, history information, or remote call information about the node.

The communication connection unit is connected to the intermediate node or the management server through a wired or wireless network.

On the other hand, geographical location based middleware server according to the present invention for achieving the above object, the communication unit connected to the access point or the client terminal via a wired or wireless network; A control unit configured to receive and store access point information from the access point, or to control the node information to be transmitted to the client terminal according to a node information request from the client terminal; A database unit for storing node information for each sensor node and access point information for each access point; And a middleware processing unit configured to transmit and receive data through communication with the middleware program installed in the client terminal and the communication unit.

In addition, when the middleware processor receives a command from the client terminal, the middleware processor performs a search command, a history related command, or a remote call related command based on the received command. Will be performed.

In addition, the middleware processing unit acquires history information from each sensor node or each access point, and provides the client terminal with services for alerting, information provision, inspection, detection, security, tracking, and career prediction. .

The middleware processor may provide initial screen information on node management to the client terminal, and if arbitrary node information is requested according to a user's operation in the initial screen information, the middleware processing unit may transmit the node information to the database unit or the access. It is obtained from the point and provided to the client terminal.

The access point information includes geographic location information of the access point and a connection path of the access point, and the node information includes search information, history information, or remote call for the sensor node. (Remote Call) information, and the node information includes geographic location information, ID information, sensor value, and routing information of the sensor node.

The present invention utilizes a network address including geographical location information, so that a specific and reliable location of a corresponding node can be known even without a GPS or a separate GIS system. It can provide a middleware service fused with location information.

Details of the object and technical configuration of the present invention and the resulting effects thereof will be more clearly understood by the following detailed description based on the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram schematically showing the configuration of a geographical location information based network management system according to an embodiment of the present invention.

Referring to FIG. 1, a network management system includes a plurality of sensor nodes 102 to 108 and 122 to 129 having node information based on geographical location information; Access points 110 and 120 for registering node information from a plurality of sensor nodes; A management server 130 that manages access points located in each region and receives and manages access point information including node information from a plurality of access points; And a client terminal 140 connected to the management server 130 or the access points 110 and 120 to receive node information.

Here, the node information includes geographic location information, ID information, sensor value, and routing information of the sensor node.

In addition, the node information includes search information or history information or remote call information about the sensor node.

The access point information includes a plurality of access points that store node information registered from the sensor node, and the node information held by each access point from each access point, the geographical position information of the access point, and the access point. Include a connection path.

In FIG. 1, some sensor nodes, client terminals 140, and management servers 130 connected to other access points are located in network A, and a first access point 110 and a plurality of sensor nodes 102 to the network B are located therein. 108 is located, and the second access point 120 and a plurality of sensor nodes 122 to 129 connected thereto are located in the network C.

In FIG. 1, when any sensor node 102 in network B is connected to the first access point, the first access point 110 maintains a connection with the connected sensor node 102 and the Whenever the node information changes, the sensor node 102 periodically transmits the changed node information to the first access point 110 to update the node information for the sensor node 102.

In addition, the first access point 110 maintains a connection with the sensor node 102, and the first access point 110 periodically requests the sensor node 102 to change node information, so that the sensor Receives changed node information from node 102 and updates node information for sensor node 102.

In FIG. 1, the management server 130 provides initial screen information on management of a sensor node to a connected client terminal 140, and when the client terminal 140 selects a menu requesting node information from initial screen information. The client device 140 provides a map image in which the access point is displayed.

When the client terminal 140 selects the first access point 110 in the map image in which the access point is displayed, the management server 130 may select the first access point 110 and the plurality of sensor nodes 102 to 108 connected thereto. Provide a map image to display.

When the client terminal 140 selects the first access point 110 from the map image on which the access point is displayed and selects any sensor node 104 to request information about it, the sensor node of the first access point 110 is selected. If it does not have information about 104, the management server 130 provides the client terminal 140 with a connection path to the first access point 110. Accordingly, the client terminal 140 directly connects to the first access point 110 based on the access path to the first access point 110, so that the client terminal 140 can access the desired sensor node 104 from the first access point 110. Information may be provided.

The management server 130 opens a socket through a part in charge of the connection with the client terminal 140, sets a port number to be connected to the client terminal 140, and starts the connection reception. And generates a map image according to the geographic location information and the corresponding information to the client terminal 140 when the connection is received. Subsequently, an infinite loop is generated to receive a command from the client terminal 140, and when the command is received from the client terminal 140, a search command is performed based on the received command or a history-related command. Or executes a remote call related command.

Each sensor node 102 to 108 opens a communication socket and connects to the access point 110, and registers each sensor connected to the sensor nodes 102 to 108 to the access point 110.

The access point 110 opens a socket through a part in charge of the connection with the sensor node, sets a port number to connect to, creates an infinite loop for accepting a connection while starting accepting a connection, and receives a connection. An infinite loop is generated to receive a command, and upon receiving a command from the sensor node, it is determined whether the sensor node is a new node or an old node to be updated, and the sensor node is updated or newly registered.

The management server 130 opens a socket through the part in charge of the connection with the access point 110, sets a port number to connect to, creates an infinite loop for accepting a connection while starting accepting a connection, Upon receipt of the command, an infinite loop is generated to receive the command. When receiving the command from the access point, the access point 110 determines whether the access point 110 is a new access point or needs to update the previous access point. You will either update or register a new one.

The client terminal 140 acquires history information through a middleware program that manages node information from a sensor node or access point information from an access point, thereby providing alerts, information provision, inspection, detection, security, tracking, Perform a function that includes career expectations.

Like the aforementioned first access point 110 and the plurality of sensor nodes 102-108 connected thereto, the second access point 120 and the plurality of sensor nodes 122-129 connected thereto operate in the same function. .

Although the embodiment of FIG. 1 has been described in application to a sensor network, the same applies to an ad hoc network in which a plurality of sensor nodes 102 to 108 and 122 to 129 are lower nodes, and access points 110 and 120 are intermediate nodes. Not only applicable, but also Bluetooth or Infrared Data Association (IrDA), Wireless LAN (IEEE 802.11), Shared Wireless Access Protocol (SWAP), Wireless Personal Area Network (WPAN), Home The same applies to a short range communication network including a network and the like.

In addition, the same concept as the embodiment of FIG. 1 can be equally applied to an Internet network having an Internet protocol or another communication network having geographical location information.

The client terminal 140 may access the management server 130 or the access points 110 and 120 through a wired or wireless network. The wireless network may include code division multiple access (CDMA), wideband code division multiple access (WCDMA), high speed downlink packet access (HSDPA), and WiBro ( It may include a mobile communication network such as WiBro (wireless broadband).

The client terminal 140 may be a mobile communication terminal or a computer.

2 is a configuration diagram schematically showing the configuration of a management server and an access point according to the present invention.

Referring to FIG. 2, the management server and the access point include a communication unit 210, an input unit 220, a display unit 230, a control unit 240, a database (DB) unit 250, and a middleware processing unit 260. Here, each component may be interconnected by a bus 270.

The communication unit 210 is connected to the access points 110 and 120 or the client terminal 140 through a wired or wireless network.

In addition, the communication unit 210 receives access point information from the access points 110 and 120, receives a node information request command from the client terminal 140, and transmits the node information to the client terminal 140.

The input unit 220 receives a control command or data for managing a server from an administrator.

The display unit 230 displays a server operation state so that an administrator or the like can know.

The control unit 240 receives the access point information from the access points 110 and 120 and registers and stores the access point information in the database 250, or the node information corresponding to the node information request from the client terminal 140 is transferred to the client terminal 140. Control to be transmitted.

The database unit 250 stores node information for each sensor node and access point information for each access point. Here, the database unit 250 may be configured in the management server 130, but may be separately configured in another place or equipment separately from the management server 130.

The middleware processing unit 260 transmits and receives data through communication with a middleware program installed in the client terminal 140, and when receiving a command from the client terminal 140, performs the search command based on the received command, Perform history-related commands or remote call-related commands.

In addition, the middleware processing unit 260 acquires history information from each sensor node or each access point 110 and 120 to provide clients with services for alerts, information provision, inspection, detection, security, tracking, and career prediction. Provided to the terminal 140.

The middleware processing unit 260 provides initial screen information on node management to the client terminal 140, and when arbitrary node information is requested according to a user's operation in the initial screen information, the middleware processing unit 260 transmits the corresponding node information to the database unit 250. Or from the access point (110, 120) is provided to the client terminal 140.

Therefore, the management server 130 having the above-described configuration may be referred to as a geographical location based middleware server.

3 is a configuration diagram schematically showing an internal configuration of a client terminal according to the present invention.

Referring to FIG. 3, the client terminal 140 includes a communication connection unit 310, a display unit 320, a middleware processing unit 330, an input unit 340, and a control unit 350.

The communication connection 310 connects to an intermediate node that manages a plurality of nodes having node information based on geographical location information, or a management server that manages intermediate nodes located in each region. Here, the intermediate node may be the access points 110 and 120.

The display unit 320 displays initial screen information received from the management server 130 connected through the communication connection unit 310 on the screen.

The middleware processing unit 330 accesses the intermediate node or the management server 130 through the communication connection unit 310 and requests the node information from the connected intermediate node or the management server 130 to request the intermediate node or the management server. Node information is provided from 130.

The input unit 340 receives a request command for node information from the user.

The controller 350 controls access to the intermediate node and the management server 130, a request for node information, and a reception of node information.

4 is a flowchart illustrating a geographical location information based network management method according to an embodiment of the present invention.

Referring to FIG. 4, any sensor node 104 requests node registration by transmitting node information to the first access point 110 in charge of itself (S402).

Here, the node information includes geographical position information, ID information, sensor value, and routing information of the sensor node 104.

At this time, the sensor node 104 is the first access point (when the geographic location information and sensor value of the node information to be transmitted, the sensor node itself can determine its location in the GPS or in relation to other nodes) The first access point 110 or the management server 130 using the location information of the first access point 110 as a reference point, and the relationship with other nodes. Estimates and manages the location of a specific sensor node. Therefore, among the information transmitted from the sensor node 104 to the first access point 110, the geographic location information and the sensor value of the sensor node itself may be options.

The first access point 110, which has received a node registration request from the sensor node 104, registers node information and transmits a node registration completion message to the sensor node 104 (S404).

The first access point 110 stores the node information received from each sensor node 102 to 108 in the same manner as described above, and transmits the access point holding information including the node information to the management server 130. Request for AP registration by transferring (S406).

Here, the access point holding information includes access point information including a geographical location and ID of each access point, and node information held by each access point.

The management server 130 stores the access point holding information received from each of the access points 110 and 120 in the database unit 250 and transmits an AP registration completion message to each of the access points 110 and 120 (S408). .

Meanwhile, whenever the node information is changed, the sensor node 104 periodically transmits the changed node information to the access point 110 to automatically update its own node information (S410).

In addition, the access point 110 periodically requests the sensor node 104 to change the node information, and the sensor node 104 transmits the changed node information to the access point 110, thereby providing a sensor node 104. You can update node information of) automatically.

In addition, when the access point 110 receives the changed node information from the sensor node 104 and changes the access point holding information, the access point 110 transmits the changed short information to the management server 130 to update the short information (S412).

On the other hand, the client terminal 140 is connected to the management server 130 via a wired or wireless network according to the user's operation (S414).

If the client terminal 140 is connected, the management server 130 provides initial screen information to the client terminal 140 (S416).

Here, the initial screen information includes a map image on which each access point is displayed.

In addition, when the updated information exists in the database unit 250, the management server 130 provides the update information to the client terminal 140 (S418).

Subsequently, the client terminal 140 selects one access point 110 from the initial screen information according to the user's operation, and accordingly, the management server 140 controls a plurality of sensor nodes managed by the selected access point 110. (102-108) is displayed as a map image. Therefore, the client terminal 140 selects an arbitrary sensor node 104 according to the user's selection and requests the node information (S420).

In addition, the client terminal 140 may request node information from the access point 110 that manages any sensor node 104 according to a user's selection.

The management server 140 searches the database unit 250 and obtains node information about the selected sensor node 104 requested by the client terminal 140 based on the access point holding information according to the selected access point 110. 140) (S422).

In addition, the access point 110 having node information requested by the user also provides the node information to the client terminal 140.

5 is a flowchart illustrating an operation process of a sensor node in an embodiment of the present invention.

Referring to FIG. 5, the sensor node 106 opens a communication socket and connects to the access point 110 (S502).

Thereafter, the sensor node 106 registers sensors connected to the self in the connected access point 110 (S504).

Subsequently, when a message is received from the access point 110 (S506), the sensor node 106 executes an instruction processing loop (S508).

When receiving the command from the access point 110 (S510), the sensor node 106 analyzes the received command, and updates the corresponding operation, that is, node information or performs a remote command (Remote-Command) (S512).

When the sensor node 106 receives a Quit signal while processing the command (S514), the sensor node 106 closes the communication socket and ends the operation of the sensor node (S516).

6 is a flowchart illustrating a connection operation process of an access point with a sensor node in an embodiment of the present invention.

Referring to FIG. 6, the access point 110 opens a socket through a connection charge portion with a sensor node and sets a connected port number (S602).

Subsequently, the access point 110 starts accepting the connection and generates an infinite loop for accepting the connection (S604).

When the connection is received from the sensor node 108 (S606), the access point 110 generates an infinite loop for receiving the command (S608).

Subsequently, when the access point 110 receives a command from the sensor node 108 (S610), it determines whether the node to be registered is a new node or needs to update the previous node, based on the command from the sensor node 108. The sensor node 108 to be registered is updated or newly registered (S612).

The access point 110 transmits the instruction execution result to the sensor node 108 after executing the instruction (S614).

Thereafter, the access point 110 executes a command processing loop and if a Quit signal is received (S616), the access point 110 closes the connection with the sensor node 108 and closes the open socket (S618). The access point 110 then waits for another connection.

7 is a flowchart illustrating a connection operation process of an access point with a client terminal according to an embodiment of the present invention.

Referring to FIG. 7, the access point 110 opens a socket through a part that is in charge of connecting to a client through a server and sets a port number to be connected (S702).

Subsequently, the access point 110 starts accepting the connection and generates an infinite loop for accepting the connection (S704).

When the connection is received from the client terminal 140 (S706), the access point 110 generates an infinite loop for receiving a command (S708).

Subsequently, when the access point 110 receives a command from the client terminal 140 (S710), the access point 110 performs a search command, a history-related command, or a remote call ( Remote-call) related command is performed (S712).

The access point 110 transmits the command execution result to the client terminal 140 after executing the command (S714).

Thereafter, the access point 110 executes a command processing loop and if a Quit signal is received (S716), the access point 110 blocks the connection with the client terminal 140 and waits for another connection (S718).

8 is a flowchart illustrating a process of connecting an access point and a management server in an embodiment of the present invention.

Referring to FIG. 8, the access point 110 opens a socket through a portion in charge of the connection with the management server 130 and connects a connection to the management server 130 (S802).

Subsequently, the access point 110 registers its AP information with the connected management server 130 (S804).

After registering its AP information in the management server 130, the access point 110 simultaneously creates a thread for message processing and a thread for updating (S806).

Here, the thread for message processing and the thread for update process operations in parallel without priority in the access point 110.

When the message is received from the management server 130 during the operation of the thread for message processing (S808), the access point 110 executes a command processing loop (S810).

In addition, the access point 110 operates a timer through a thread for updating (S808).

Subsequently, when the access point 110 receives a command from the management server 130 in operation of a thread for processing a message (S812-YES), the access point 110 analyzes the received command and updates its operation, that is, its node information. Or perform a remote command (Remote-Command) (S814).

In addition, in the operation of the thread for the update, the access point 110 when the predetermined time to update its information on the server through the timer (S810), the update information for its AP to the management server 130 It transmits (S812). If it is not the predetermined time (S810-NO), the process returns to the process of performing the timer operation (S808).

The operation of the thread for the update is repeated repeatedly until the end of the operation of the access point (110).

Thereafter, the access point 110 transmits a command execution result to the management server 130 in operation of a thread for processing a message (S816).

When the access point 110 terminates its operation (S818), the access point 110 closes the communication socket and transmits a Quit signal to the management server 130 (S820).

However, if the operation point 110 is not terminated (S818-NO), the access point 110 returns to step S808 in which a message is received through a thread for message processing.

9 is a flowchart illustrating an operation of connecting to an access point of a management server in an embodiment of the present invention.

Referring to FIG. 9, the management server 130 has a part waiting for a connection with the access points 110 and 120 and a part waiting for a connection with the client terminal 140, and a part waiting for a connection with the access points 110 and 120. Open the socket through and set the port number to connect (S902).

The management server 130 generates an infinite loop for accepting the connection while starting accepting the connection (S904).

If the connection is received (S906), the management server 130 generates an infinite loop for receiving the command (S908).

When the management server 130 receives a command from the access point (110, 120) (S910), after determining whether the AP to be registered is a new AP or update the previous AP, and updates the information on the access point or newly Register (S912).

Thereafter, the management server 130 transmits the command execution result to the access points 110 and 120 (S914), and executes the command processing loop again.

If the Quit signal is received (S916), the management server 130 blocks the connection and waits for another connection (S918).

10 is a flowchart illustrating a connection operation process of a management server with a client terminal according to an embodiment of the present invention.

Referring to FIG. 10, the management server 130 sets a port number to open a socket through a part waiting for a connection with the client terminal 140 (S1002).

The management server 130 generates an infinite loop for accepting the connection while starting accepting the connection (S1004).

When the connection is received (S1006), the management server 130 transmits a map according to the location information and the corresponding information (S1008).

The management server 130 generates an infinite loop for receiving a command (S1010).

When receiving the command (S1012), the management server 130 determines a command to register and then performs a search command, a history related command, or a remote call related command. (S1014).

Thereafter, the management server 130 transmits a command execution result (S1016), and executes a command processing loop again.

If the Quit signal is received (S1018), the management server 130 blocks the connection and waits for another connection (S1020).

11 is a flowchart illustrating a connection operation process of a client terminal with a management server according to an embodiment of the present invention.

Referring to FIG. 10, the client terminal 140 receives an address in a command window according to a user's operation, opens a socket, and connects a connection with the management server 130 (S1102).

The client terminal 140 sets the user after receiving the information on the initial screen from the management server 130 (S1104).

Thereafter, the client terminal 140 generates a process for each sensor node (C170) and executes an instruction processing loop (S1106).

Thereafter, the client terminal 140 executes a daemon related to the update, and simultaneously executes an update, a search, and a history through a process for each sensor node, and then executes a command processing loop again (S1108). .

The client terminal 140 executes the client loop again when a new address is input through the daemon, and closes the socket and terminates when receiving a Quit command (S1110).

12 is a flowchart illustrating a process of receiving and displaying a map screen from a management server according to an address input of a client terminal in an embodiment of the present invention.

Referring to FIG. 12, when a user inputs an address in the client terminal 140 (S1202), the client terminal 140 requests a DB corresponding to the address to the management server 130 (S1204).

The management server 130 receives the address of the region to be searched from the client terminal 140 (S1206) and searches a database corresponding to the address (S1208).

When the management server 130 searches for the database (S1210), the management server 130 connects the database to the client terminal 140, and transmits a message to the client terminal 140 indicating that the corresponding information can be retrieved from the database (S1212). ).

The client terminal 140 requests the management server 130 for a map search corresponding to the address input from the currently connected database (S1214).

The management server 130 reads the map image corresponding to the input address from the database and transmits the map image to the client terminal 140 (S1216).

When the client terminal 140 receives the map image (S1218), the client terminal 140 displays the map image of the initial region through the display unit 320 (S1220).

If the corresponding map cannot be found in the currently connected database (S1218-NO), the management server 130 closes the connection of the currently connected database, connects the client terminal 140 to the determined database, and then reconnects to the database. Ask for guidance.

13 is a flowchart illustrating a process of registering a new node in an embodiment of the present invention.

Referring to FIG. 13, the access point 110 or 120 or the management server 130 determines whether a node to be registered is a new node (S1302), and if it is a new node, determines whether there is enough space to store information of the node ( S1304).

When the storage space is sufficient (S1304-YES), the access points 110 and 120 or the management server 130 store information about the new node in the database DB (S1306).

In addition, the access point 110 or 120 or the management server 130 generates and stores a separate table for a history service (S1308).

Thereafter, the access point 110 or 120 or the management server 130 transmits a registration completion message (S1310), and generates an update thread of the corresponding node (S1312).

If the node to be registered is not a new node (1302-NO), the access point 110, 120 or the management server 130 updates the node using an update mechanism, which is described with reference to FIG. 14. It demonstrates with reference.

When the storage space is not sufficient (S1304-NO), the access points 110 and 120 or the management server 130 secure the space for storing the information of the corresponding node and then store the stored information (S1314). .

14 is a flowchart illustrating a process of updating a node to be registered in an embodiment of the present invention.

Referring to FIG. 14, the management server 130 determines whether the node to be registered is a new node and updates the corresponding information in the database unit 250 when the information about the existing registered node is not a new node (S1402). ).

Subsequently, the management server 130 adds the changed node information to the history table (S1404).

After updating the node information, the management server 130 transmits an update confirmation message to the access point or sensor node (S1406).

Here, the node information includes a type A that transmits the update data to the access point every predetermined time due to the high update frequency, and a type B that requests the information to be updated by the access point with a low update frequency.

The management server 130 determines whether the corresponding node information is type A (S1408). If the corresponding node information is type A, the management server 130 ends the update process and waits for the next command.

However, if the corresponding node information is not type A but type B (S1408-NO), the management server 130 generates an update thread of the corresponding node (S1410), and operates a timer (S1412).

The management server 130 checks whether the set timer time is greater than the maximum time (S1414), and checks whether the node is alive when the timer time is greater than the maximum time. By transmitting to the node, it is checked whether the node is alive based on the acknowledgment message received from the access point or the sensor node (S1416).

If the node is alive (S1418-YES), the management server 130 modifies the value of the timer (S1418), and if there is information to be updated, transmits a message to transmit, and determines whether data on the node information is received. (S1420).

If any information is received (S1402-YES), the management server 130 returns to step S1402 and updates and stores the information in a database and a history table.

However, if the node is not alive and died (S1418-NO), the management server 130 terminates the thread of the node.

On the other hand, when the client terminal 140 accesses the management server 130 and searches for arbitrary node information, the management server 130 may search for brief information descriptors of various access points. Proceed with Search. This serves as a search cache and obtains the address of the desired AP to prepare for a specific search by the access point.

The access point 110 provides a service related to a detailed search, history, average, sensor type, and the like, which are managed by a specific AP.

In addition, the history checks the value of the sensor node or the change of the network address to history the location, and records the change of nodes in each region or section in the DB. In addition, users can easily and quickly access the information they want.

In addition, the system according to the present invention can be written as a computer program, and transmits and receives data based on TCP, so that the system is independent of the OS and the development language of each system. All information is implemented by being stored in each database and read and executed by a computer.

As described above, according to the present invention, in a communication network including a sensor network and an Internet network, information on the lowest node of each network is interpreted based on geographical location information, and information on each node distributed based on the information is collected. In this way, it is possible to realize a geographical location information-based network management method and system that allows a user to be provided with a service utilizing geographical location information using a network address.

As described above, the present invention has been described in detail with reference to the preferred embodiments, but those skilled in the art to which the present invention pertains can implement the present invention in other specific forms without changing the technical spirit or essential features. The described embodiments are to be understood in all respects as illustrative and not restrictive.

In addition, the scope of the present invention is defined by the following claims rather than the foregoing description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts are included in the scope of the present invention. Should be interpreted as

The present invention can be equally applied to an ad hoc network having a plurality of sensor nodes as subordinate nodes and an access point as an intermediate node, and can also be applied to Bluetooth, infrared (Infrared Data Association), and wireless LAN (IEEE). The same applies to short-range communication networks including 802.11 (SWAP), shared wireless access protocol (SWAP), wireless personal area network (WPAN), home networks, and the like.

Further, the present invention can be equally applied to an internet network having an internet protocol or another communication network having geographic location information.

1 is a configuration diagram schematically showing the configuration of a geographical location information based network middleware system according to an embodiment of the present invention;

2 is a configuration diagram schematically showing the configuration of a management server and an access point according to the present invention;

3 is a schematic view showing an internal configuration of a client terminal according to the present invention;

4 is a flowchart illustrating a method for managing geographical location information based network according to an embodiment of the present invention;

5 is a flowchart illustrating an operation process of a sensor node in an embodiment of the present invention;

6 is a flowchart illustrating a connection operation process of an access point with a sensor node according to an embodiment of the present invention;

7 is a flowchart illustrating a connection operation process of an access point with a client terminal according to an embodiment of the present invention;

8 is a flowchart illustrating a connection operation process between an access point and a management server according to an embodiment of the present invention;

9 is a flowchart illustrating a connection operation process with an access point of a management server in an embodiment of the present invention;

10 is a flowchart illustrating a connection operation process of a management server with a client terminal according to an embodiment of the present invention;

11 is a flowchart illustrating a connection operation process of a client terminal with a management server according to an embodiment of the present invention;

12 is a flowchart illustrating a process of receiving and displaying a map screen from a management server according to an address input of a client terminal in an embodiment of the present invention;

13 is a flowchart illustrating a process of registering a new node in an embodiment of the present invention; and

14 is a flowchart illustrating a process of updating a node to be registered in an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110, 120: access point 102-108, 122-129: sensor node

130: management server 140: client terminal

210: communication unit 220: input unit

230: display unit 240: control unit

250: Database unit 260: Middleware processing unit

270: bus 310: communication connection

320: display unit 330: middleware processing unit

340 input unit 350 control unit

Claims (31)

An access point that governs a plurality of sensor nodes having network addresses based on geographic location information; A management server that manages the access points located in each region; And a client terminal accessing the management server, wherein the network location information based network management method of the system comprises: (a) the sensor node registering node information with the access point; (b) storing, by the access point, the node information registered from the sensor node, and transmitting retention information including the node information to the management server; And (c) storing and managing the holding information by the management server; Geographic location information based network management method comprising a. The method of claim 1, (d) the client terminal accessing the management server to request the node information; And (e) providing, by the management server, the node information requested by the client terminal to the client terminal based on the holding information; Geographic location information based network management method further comprising. The method according to claim 1 or 2, The node information includes geographic location information, sensor value, ID information, and routing information of the sensor node. And geographical location information and sensor value of the sensor node are optionally included in the node information and transmitted. The method of claim 2, The retention information includes the node information registered from each access point, the geographic location of the access point, and an ID (ID) for a plurality of access points storing the node information registered from the sensor node. Geographic location information based network management method comprising the access point information. The method according to claim 1 or 2, After the step (c), the access point and the sensor node maintain a connection, and whenever the node information is changed, the sensor node periodically transmits the changed node information to the access point to provide the node information. Geographic location information based network management method characterized in that the Update (Update). The method according to claim 1 or 2, After the step (c), the access point and the sensor node maintain a connection, and the access point periodically requests the sensor node to change the node information to update the node information. Geographic location information based network management method characterized in that. The method of claim 2, Step (d) provides initial screen information on management of the sensor node to the client terminal to which the management server is connected, and the client terminal selects a menu for requesting the node information from the initial screen information. Geographic location information based network management method, characterized in that. The method of claim 7, wherein And the initial screen information comprises a map image on which the access point is displayed. The method of claim 1, After the step (b), the access point maintains a connection with the management server, and when the node information is changed or when the retention information is changed, the changed information is transmitted to the management server to retain the connection. Geographic location information based network management method comprising the step of updating information. The method of claim 2, In the step (d), the management server opens a socket through a part that is in charge of connecting with the client terminal, sets a port number to connect to, and creates an infinite loop for accepting a connection while starting to accept the connection. And when the connection is received, transmits a map image according to geographical location information and the corresponding information to the client terminal, generates an infinite loop for receiving a command, and receives the command from the client terminal based on the command. A geographical location information based network management method comprising performing a search command, a history related command, or a remote call related command. The method of claim 1, (d) the client terminal accessing the management server to request the node information; (e) if the node information requested by the client terminal is not present in the holding information, providing the access point information to the client terminal by the management server to manage the node information; (f) the client terminal directly accessing the access point based on the access point information; And (g) the client terminal receiving the node information from the connected access point; Geographic location information based network management method further comprises. The method of claim 1, In the step (a), the sensor node opens a communication socket, connects to the access point, and registers each sensor connected to the sensor node to the access point. Management method. The method of claim 1, In the step (b), the access point opens a socket through a part that is in charge of connecting to the sensor node, sets a port number to connect to, and creates an infinite loop for accepting a connection while starting accepting a connection. When the connection is received, an infinite loop for receiving a command is generated, and when the command is received from the sensor node, it is determined whether the sensor node is a new node or an old node to be updated, and the sensor node is updated or newly created. Geographic location information based network management method, characterized in that the registration. The method of claim 1, In the step (b), the management server opens a socket through a part in charge of the connection with the access point, sets a port number to connect to, and creates an infinite loop for accepting a connection while starting a connection. When the connection is received, an infinite loop for receiving an instruction is generated, and when the instruction is received from the access point, it is determined whether the access point is a new access point or an old access point, and the access point is updated. Geo-location information network management method characterized in that the registration or registration. A plurality of sensor nodes having node information based on geographic location information; An access point for registering the node information from the plurality of sensor nodes; A management server that manages the access points located in each region and receives and manages access point information including the node information from a plurality of the access points; And A client terminal connected to the management server or the access point to receive the node information; Geographic location information based network management system comprising a. The method of claim 15, The client terminal, when accessing the management server, receives initial screen information on management of the sensor node from the management server, and selects a menu for requesting the node information from the initial screen information. Information based network management system. The method of claim 16, And the initial screen information comprises a map image on which the access point is displayed. The method of claim 15, The sensor node opens a communication socket to connect to the access point, and registers node information including information of each sensor connected to the sensor node to the access point. Management system. The method of claim 15, The access point stores the node information registered from the sensor node, and transmits the access point information including the node information, geographical location information of the access point, and an access path of the access point to the management server. Geographic location information based network management system, characterized in that. The method of claim 15, The management server opens a socket through a part in charge of the connection with the access point, sets a port number to connect to, creates an infinite loop for accepting a connection while starting accepting a connection, and receives a connection. Generate an infinite loop for receiving an instruction, and upon receiving the instruction from the access point, determine whether the access point is a new access point or update an old access point, and update or newly register the access point. Geographical location information based network management system. The method of claim 15, The access point opens a socket through a part in charge of the connection with the sensor node, sets a port number to connect to, creates an infinite loop for accepting a connection while starting accepting a connection, and receives a connection. Generates an infinite loop for receiving a command, and upon receiving the command from the sensor node, it is determined whether the sensor node is a new node or a previous node, and updates or newly registers the sensor node. Geographic location information based network management system. The method of claim 15, And the node information includes search information, history information, or remote call information about the sensor node. The method of claim 15, And the node information includes geographic location information, ID information, sensor value, and routing information of the sensor node. The method of claim 15, The client terminal acquires history information through a middleware program that manages the node information from the sensor node or the access point information from the access point, thereby providing alerts, information provision, inspection, detection, security, Geographic location information based network management system that performs functions including tracking, career prediction. A communication unit connected to an access point or a client terminal through a wired or wireless network; A control unit configured to receive and store access point information from the access point, or to control the node information to be transmitted to the client terminal according to a node information request from the client terminal; A database unit for storing node information for each sensor node and access point information for each access point; And Middleware processing unit for transmitting and receiving data through the communication through the middleware program installed in the client terminal and the communication unit; Geo location based management server comprising a. The method of claim 25, When the middleware processor receives a command from the client terminal, the middleware processor performs a search command, a history related command, or a remote call related command based on the received command. Geographic location-based management server, characterized in that. The method of claim 25, The middleware processing unit acquires historical information from each sensor node or each access point, and provides the client terminal with services for alarm, information provision, inspection, detection, security, tracking, and career prediction. Characterized by geographical location-based management server. The method of claim 25, The middleware processing unit provides initial screen information on node management to the client terminal, and if arbitrary node information is requested according to a user's operation in the initial screen information, the middleware processing unit sends the node information from the database unit or the access point. And acquire and provide the same to the client terminal. The method of claim 25, And the access point information includes geographical location information of the access point and an access path of the access point. The method of claim 25, And the node information includes search information, history information, or remote call information for the sensor node. The method of claim 25, The node information includes geographical location information, ID information, sensor value, and routing information of the sensor node.

Images