KR20210055813A - Auto-Configuration Method of IoT Control Network and System Thereof - Google Patents

Abstract

The present invention relates to a method for automatically setting an IoT control network, comprising: broadcasting a beacon signal from a gateway to the surroundings; transmitting, at the node receiving the beacon signal, a first registration request message for requesting communication connection with the gateway; transmitting a second registration request message to the node that has transmitted the first registration request message when a shadow area node that has not received the beacon signal receives the first registration request message; determining a path for connection of a node in a shadow area in the gateway or a separate server based on path information collected from the registration request messages; and setting the path determined in the path determining step by transmitting a path setting message from the gateway or the separate server. According to the present invention, there is an effect that the IoT control network can be automatically and quickly configured by quickly searching for a shadow area node located in a shadow area where a direct communication connection with a gateway in the IoT control network can be established.

Description

Auto-Configuration Method of IoT Control Network and System Thereof}

The present invention relates to a method and system for automatically configuring an IoT control network. Specifically, it relates to an IoT network for lighting control, and a method of automatically configuring an IoT control network by automatically recognizing a shaded area node that cannot be directly connected to a gateway, and selecting a router node to connect it, and the system About.

In the Internet of Things (IoT) environment, various objects have built-in sensors and communication functions to collect data from various sensors and remotely control objects. In order to build an IoT environment, a network that connects various objects by wire or wireless must be established. It can be implemented and can be constructed in various network topologies such as a ring topology, a bus topology, a star topology, a mesh topology, and a tree topology. I can.

In the IoT control network using wireless communication, depending on the characteristics of the frequency used for the communication connection or the wireless transmission power, there is a problem in that a shaded area where communication cannot be directly connected to the gateway occurs, and communication with a node located in the shaded area is impossible. Can occur. In order to solve this problem, a method of changing a frequency or increasing a transmission power may be applied in order to arrange a plurality of gateways or connect to a node located in a shaded area.

However, increasing the number of gateways has a problem that the network construction cost increases, and adjusting the frequency or transmission power to overcome this whenever a shadow area occurs complicates the network operation, thereby increasing the operating cost of the network. There is a problem.

As a solution to the shadow area problem, it may be considered to introduce a router node that relays between a general node and a gateway. The router node performs a role of relaying signals between the shadow area node and the gateway for a general node (hereinafter referred to as a'shaded area node') that is located in a shadow area and cannot directly communicate with the gateway. The router node has an advantage in that the introduction cost is cheaper than that of the gateway, and since it can be selected from general nodes, network operation is also simple.

However, even if the shaded area is identified by considering the installation area before installing the IoT control network, it may appear different from the planned shaded area because it is different from the radio wave environment of the actual installation area. The method of identifying and designating a specific node as a router node has a problem that requires a lot of effort and cost in setting up an IoT control network. Therefore, there is a need for a method of automatically grasping the propagation environment of the IoT control network, selecting a router node for solving the shadow area, and automatically setting the IoT control network.

In addition, when a failure occurs in the router node of the IoT control network or the communication connection between the router node and the gateway fails, not only the router node but also the general nodes connected to the gateway through the router node also fail at the same time. There is. That is, since the failure of the router node becomes a problem in the communication connection of the general node, and the effect of the failure is expanded, there is a need for a method for quickly solving the failure of the router node.

1. Korean Patent Publication No. 10-813132 (2008. 03. 06.) 2. Korean Patent Application Publication No. 10-2013-0142612 (December 30, 2013)

An object of the present invention is to automatically configure an IoT control network, and to provide a method and system for automatically configuring an IoT control network that quickly grasps the propagation environment of an IoT control network and connects all possible nodes. .

A more specific object of the present invention is to quickly search for a shadow area node located in a shadow area where it is impossible to establish a direct communication connection with a gateway in an IoT control network, and automatically detect a router node capable of relaying communication between the shadow area node and the gateway. Selected to provide a method and system for quickly configuring an IoT control network.

In addition, the present invention automatically determines a router node and pre-designates a spare router node that can replace it in the event of a failure in the corresponding router node, so that in the event of a failure in the corresponding router node, rapid recovery is possible. Another purpose is to do it.

In order to achieve the above object, the present invention provides a method for automatically setting an IoT control network, comprising: a beacon broadcasting step 100 of broadcasting a beacon signal from a gateway to surroundings; A gateway registration request step 210 of transmitting a primary registration request message requesting a communication connection with the gateway at the node receiving the beacon signal; A shadow area registration request step 220 of transmitting a second registration request message to the node that has transmitted the first registration request message when the shadow area node that has not received the beacon signal receives the first registration request message; A path determination step (300) of determining a path for connection of a shadow area node in a gateway or a separate server based on the path information collected from the registration request messages; And a route setting step 400 of setting a route determined in the route determining step by transmitting a route setting message from the gateway or a separate server.

In addition, according to an embodiment of the present invention, in the shadow area registration request step 220, when a shadow area node that has not received the beacon signal and the 1st to kth registration request message receives the kth registration request message , The (k+1)th registration request message can be transmitted to the node that transmitted the kth registration request message.

In addition, according to an embodiment of the present invention, when the node receives a second or more registration request message destined for itself, it may retransmit it to the gateway.

In addition, according to an embodiment of the present invention, when the gateway receives the first registration request message, it may establish a communication connection with the node that sent the first registration request message.

In addition, according to an embodiment of the present invention, the k-th registration request message includes a message type, a source node, a destination, a beacon signal, or a (k-1)th registration request message. It may include a received signal strength or a received signal time of a beacon signal or a (k-1) th registration request message.

In addition, according to an embodiment of the present invention, using the signal strength of the communication connection between each node collected from the registration request messages in the path determination step 300, a path for connecting the shadow area nodes is determined. I can.

In addition, according to an embodiment of the present invention, in the path determination step 300, a path for communication connection of a shadow area node may be determined so that as few router nodes are included as possible.

In addition, according to an embodiment of the present invention, for each router node determined in the path determination step 300, a spare router node capable of replacing the router node when a failure occurs in the corresponding router node may be determined.

In addition, according to an embodiment of the present invention, in the case of a failure in the router node with respect to a general node connected to a router node in the route setting step 400, a spare router capable of restoring a communication connection by replacing the router node. Nodes can be notified by including them in a route setting message.

Further, according to an embodiment of the present invention, the route setting step 400 transmits a route setting message including route information to the router node determined in the route determining step 300, and the router node transmits route information. Using this, it is possible to set its own route table, and transmit a route setting message to a general node recorded in the route table as being connected to the router node.

In addition, the present invention for achieving the above object, in the node device of an IoT control network capable of automatic setting, the device comprises: a communication unit 10 capable of transmitting and receiving messages with other nodes or gateways; A sensor unit 20 for detecting a physical quantity or a change thereof around the device; And an information processing unit 30 that processes the message received by the communication unit 10 and the measured value measured by the sensor unit 20, wherein the device receives a beacon signal from the gateway through the communication unit 10. Upon receipt, the primary registration request message is transmitted to the gateway, and when the primary registration request message is received through the communication unit in a state in which the beacon signal is not received, the secondary registration is performed with the originating node of the primary registration request message. A node of an IoT control network capable of automatic setting, characterized in that when a request message is transmitted and a route setting message is received through the communication unit 10, a route is set using route information included in the route setting message. It relates to the device.

In addition, according to an embodiment of the present invention, when the node device receives the k-th registration request message through the communication unit 10 in a state in which the beacon signal and the first to k-th registration request message are not received, The (k+1)th registration request message may be transmitted to the originating node of the kth registration request message.

In addition, according to an embodiment of the present invention, when the node device receives a second or more registration request message destined for the node device through the communication unit 10, it may retransmit it to the gateway.

In addition, according to an embodiment of the present invention, when the node device notifies a spare router node together with a router node to which the node device is connected to a route setting message received through the communication unit 10, the router node When a failure is detected, the communication connection may be restored using the spare router node.

In addition, according to an embodiment of the present invention, when the route setting message received through the communication unit 10 notifies the node apparatus to a router node, the node device uses route information included in the route setting message. Thus, it sets its own route table, and transmits a route setting message to a lower node recorded in the route table as being connected to the node device.

According to the method and system for automatically setting an IoT control network according to the present invention, it is possible to quickly grasp the propagation environment of the IoT control network and automatically configure the IoT control network.

In addition, according to the method and system for automatically setting an IoT control network according to the present invention, the IoT control network quickly searches for a shadow area node located in a shadow area where it is impossible to establish a direct communication connection with the gateway, and between the shadow area node and the gateway. It has the effect of automatically selecting a router node that can relay communication of the network and quickly configuring the IoT control network.

And, according to the method and system for automatically setting up an IoT control network according to the present invention, while automatically determining a router node, a spare router node capable of replacing it in case a failure occurs in the corresponding router node is designated in advance, and the corresponding router In the event of a failure in a node, there is an effect of enabling rapid recovery.

1 shows an example of an IoT control network according to the present invention.
2 shows an embodiment of a method for automatically setting an IoT control network according to the present invention.
3 is a step for configuring an IoT control network according to the present invention, illustrating a beacon broadcasting step 100 in which a gateway broadcasts a beacon and a general node receives it.
4 is a step for configuring an IoT control network according to the present invention, and illustrates a gateway registration request step 210 in which normal nodes that have received a beacon signal from a gateway transmit a registration request message.
5 is a process for configuring an IoT control network according to the present invention. In the shaded area registration request step 220, shaded area nodes receive a registration request message from another node, and show that they are located in the shaded area. It illustrates the process of recognition.
6 is a step for configuring an IoT control network according to the present invention, in which a shadow area node receiving a registration request message from another node in the shadow area registration request step 220 transmits a registration request message to the other node. This is an example of the process of doing it.
7 illustrates an embodiment of a registration request message for configuring an IoT control network according to the present invention.
8 illustrates an embodiment of path information collected according to a method for configuring an IoT control network according to the present invention.
9 illustrates an embodiment of an IoT control network configured according to an automatic setting method of an IoT control network according to the present invention.
10 shows an embodiment of a node device constituting an IoT control network according to the present invention.

The present invention quickly searches for a shaded area node located in a shaded area where it is impossible to establish a direct communication connection with a gateway in an IoT control network, and automatically selects a router node capable of relaying communication between the shaded area node and the gateway, It relates to a method and system for automatically and quickly configuring an IoT control network.

1 shows an example of an IoT control network according to the present invention.

The IoT control network according to the present invention illustrated in FIG. 1 is composed of one gateway (node 1), two router nodes (nodes 3 and 5), and general nodes (nodes 2, 4, 6, 7, 8). .

In the IoT control network of FIG. 1, general nodes 2, 3, and 4 are directly connected to the gateway 1, and general nodes 5, 6, 7, and 8 are not directly connected to the gateway 1, so the nodes selected as router nodes It is connected to the gateway 1 through 3 and 5.

In the IoT control network of FIG. 1, when nodes 5, 6, 7, 8 among general nodes cannot be directly connected to the gateway 1, a new gateway is added to node 5, or nodes 5, 6, 7, Rather than establishing a communication connection with the gateway (1) by adjusting the frequency or transmission power for each of 8, network construction and operation costs can be minimized by using a router node that relays the gateway and general nodes in the shaded area. have.

2 shows an embodiment of a method for automatically setting an IoT control network according to the present invention.

According to the embodiment illustrated in FIG. 2, the automatic setting method of the IoT control network is largely 1) beacon broadcasting step 100, 2) registration request step 200, 3) path determination step 300 and 4) path setting Consists of step 400. First, in the beacon broadcasting step 100, the gateway transmits a beacon signal to the surroundings in order to connect communication with general nodes. Next, in the registration request step 200, the general nodes transmit a registration request message requesting a communication connection with the gateway, and the gateway registration request step 210 in which the general nodes receiving the beacon signal transmit a registration request message. And a shadow area registration request step 220 in which shadow area nodes that have received a registration request message transmitted by other nodes (without receiving a beacon signal) transmit a registration request message. Next, the gateway includes a path determination step 300 of determining a path for connection of the shadow area nodes based on the path information collected from the received registration request messages. Further, in the path determination step 300, if necessary for connection of the shadow area node, some of the general nodes may be determined as router nodes. Finally, in the route setting step 400, the gateway may configure the IoT control network so that the shadow area nodes are connected to the path determined in the route determination step 300 by using the route setting message.

3 is a step for configuring an IoT control network according to the present invention, illustrating a beacon broadcasting step 100 in which a gateway broadcasts a beacon and a general node receives it.

As shown in FIG. 3, when the IoT control network is first installed, the gateway broadcasts a beacon signal to the surroundings, and normal nodes are in a state of waiting to receive the signal. In the beacon signal of the gateway, the area to which the signal reaches is determined according to the propagation environment (the area in the circle indicated by the blue dotted line in FIG. 3), and normal nodes inside the propagation area receive the gateway's beacon signal. General nodes that have received the beacon signal are nodes capable of direct communication connection with the gateway, and can access the IoT control network through the gateway, and nodes that have not received the beacon signal are shaded areas (circles indicated by black dotted lines in FIG. 3). It is a node located in the internal area) and cannot establish a direct communication connection with the gateway.

In the embodiment of FIG. 3, normal nodes 2, 3, and 4 are nodes that have received a beacon signal and are directly connected to the gateway 1, and normal nodes 5, 6, 7, 8 are located in a shaded area, and thus the gateway 1 ) And cannot communicate directly with them.

4 is a step for configuring an IoT control network according to the present invention, illustrating a gateway registration request step 210 in which general nodes that have received a beacon signal from a gateway transmit a primary registration request message. will be.

As illustrated in FIG. 4, general nodes that have received the beacon signal transmit a primary registration request message from the gateway to the destination in order to establish a communication connection with the gateway. The primary registration request message transmitted by the general node that has received the beacon signal includes 1) the source node ID (ID) of the general node requesting registration and 2) the received signal strength of the beacon signal received from the node. Write and send. As another embodiment, the primary registration request message may also include a received signal time of a beacon signal.

Upon receiving the first registration request message, the gateway stores 1) the registration request node ID and 2) received signal strength information as path information, and establishes a communication connection with the corresponding general node. In the embodiment of FIG. 4, general nodes 2, 3, and 4 that have received a beacon signal from the gateway transmit a primary registration request message to the gateway, and the gateway stores the general nodes 2, 3, and 4 as nodes to which communication is directly connected. do.

5 is a process for configuring an IoT control network according to the present invention. In the shaded area registration request step 220, shaded area nodes receive a primary registration request message from another node, and are located in the shaded area. It illustrates the process of recognizing that.

Since the primary registration request message is transmitted over the air, other general nodes to which the radio signal arrives can receive this message in addition to the destination gateway. For example, in FIG. 5, when a general node 4 transmits a primary registration request message through a gateway as a destination, neighboring general nodes 2, 3, 5, and 6 may also receive this message. General nodes 2 and 3 that have already received the beacon signal from the gateway ignore the primary registration request message. On the other hand, when normal nodes 5 and 6 that have not received the beacon signal receive the first registration request message, 1) the fact that the beacon signal is transmitted from the gateway, 2) node 4 that has transmitted the first registration request message It is confirmed that the signal has been received, and 3) that the corresponding nodes 5 and 6 have not received the beacon signal. That is, in a situation in which they have not received the beacon signal, nodes that have received the primary registration request signal of another node (corresponding to the reception of the beacon signal) recognize that they are located in a shadow area.

In addition, by receiving the first registration request message, the shadow area node recognizes that it is located in a shadow area where direct communication connection with the gateway is not possible, and another It is also recognized that communication connection is possible with a node (node 4 in the embodiment of FIG. 5), and that a gateway can be connected through the node.

6 is a step for configuring an IoT control network according to the present invention, in which a shadow area node receiving a primary registration request message from another node in the shadow area registration request step 220 is secondly registered with the other node. This is an illustration of the process of sending a request message.

In the embodiment of FIG. 6, when node 6, which is a shadow area node, receives a primary registration request message destined for a gateway from another node, node 3 (or node 4), a secondary registration request message is transmitted in response thereto. It shows the process. Upon receiving the primary registration request message sent by node 3 (or node 4) to the gateway, node 6 transmits a secondary registration request message to node 3 (or node 4). In this case, the secondary registration request message transmitted by the node 6 may include 1) its own node ID, 2) the destination node ID, and 3) the signal strength of the primary registration request message received by the node 6. Node 3 (or node 4) receiving the second registration request message of Nodo 6 transmits the second registration request message to the gateway.

In the embodiment of FIG. 6, the secondary registration request message transmitted by node 6 reaches node 3 (or node 4) and can also be received by nodes 7, 8, which are neighboring nodes. Nodes 7 and 8 are gateways. Not only did not receive the beacon signal from node 3 (or node 4), but also did not receive the primary registration request message sent from node 3 (or node 4), but the secondary registration request from node 6 to node 3 (or node 4) as the destination You will receive a message. In this case, nodes 7 and 8 recognize that they are located in a shaded area and cannot communicate directly with node 3 (or node 4), but can connect communication with the gateway through node 6. Accordingly, nodes 7 and 8 transmit a third registration request message destined for node 6 in order to be connected to the IoT network. Upon receiving the third registration request message, node 6 transmits it to the gateway through node 3 (or node 4).

In this way, the general node receiving the beacon signal in the gateway registration request step 210 transmits the first registration request message, and the shaded area node receiving the first registration request message in the shadow area registration request step 220 again By sending the 2nd registration request message and sending the 3rd registration request message again by the shaded area node receiving the 2nd registration request message, by sequentially sending the kth registration request message, all in the IoT control network The node sends a registration request message to the gateway. In this way, a beacon signal, a first registration request message, a second registration request message, a third registration request message, ... The sequential transmission of the registration request message in the kth registration request message or the like continues until all shadow area nodes send the registration request message, so that the gateway can recognize all the shadow area nodes. In addition, since the registration request message includes the source node ID, the destination node ID, and the strength of the received signal, the gateway receiving the received signal recognizes path information for the shadow area node.

In addition, according to an embodiment of the present invention, in order to reduce redundantly transmitted registration request messages, 1) a general node receiving a beacon signal from a gateway receives a registration request message from another node, but a new registration request message 2) If the destination of the received registration request message is the same as the originating node of the already received registration request message, a new registration request message is not transmitted.

For example, in the embodiment of FIG. 5, 1) Node 4 transmits a primary registration request message in response to a beacon signal from a gateway, and nodes 2 and 3 that have already received a beacon signal receive a new secondary registration request message ( Node 4 as the destination) is not transmitted, and 2) If node 5, which has received the primary registration request message from node 4, sends the secondary registration request message to node 4 as the destination, node 6 that has already received it Since the primary registration request message is received from node 4, a new secondary registration request message (with node 5 as a destination) is not transmitted. In this way, it is possible to reduce the number of registration request messages required to configure the IoT control network.

7 illustrates an embodiment of a registration request message for configuring an IoT control network according to the present invention.

According to an embodiment of the present invention, the registration request message includes 1) message type, 2) order, 3) source node, 4) destination, 5) received signal strength. strength), 6) received signal time.

The message type indicates the registration request message, the order k indicates the kth registration request message, the source node indicates the ID of the node sending the registration request message, and the destination is This indicates the destination of the registration request message, and is an ID indicating a gateway or other node. In addition, the received signal strength and the received signal time represent the strength of a signal (beacon signal or other registration request message) received from the destination by the originating node and the number of times received.

In this way, nodes receiving the beacon signal in the gateway registration request step 210 transmit the first registration request message to the gateway to the destination, and the k-th registration request message of other nodes is received in the shadow area registration request step 220 In response, when the shadow area nodes sequentially transmit the (k+1)th registration request message, all nodes capable of communication connection transmit the registration request message. In addition, all registration request messages are transmitted to the gateway. Since the registration request message includes path information (relay node and signal strength) between the originating node and the destination, the gateway collects the registration request message to provide the entire IoT control network. You get route information. Based on the route information obtained through this process, the gateway determines a route for connecting the shadow area nodes in the route determination step 300, and transmits a route setting message in the route setting step 400 to set the route. .

8 illustrates an embodiment of path information collected according to a method for configuring an IoT control network according to the present invention.

According to the embodiment of FIG. 8, nodes 2, 3, and 4 are directly connected to the gateway by a primary registration request message sent to the gateway by receiving the beacon signal of the gateway directly, and nodes 5, 6, 7, 8 are As a shaded area node, routing information including radio links (black lines) and signal strengths (numbers) that can connect the nodes can be collected from the gateway through registration request messages sent by each node. have.

The path determination step 300 is performed in a gateway or a separate server. A separate server may exist outside the IoT network or may be located at any one node inside the IoT network. As described above, the gateway collects registration request messages transmitted from the shadow area node, and understands the route information of the IoT control network. In addition, when the path determination step 300 is performed using a separate server, the gateway may transmit the collected path information to the gateway.

The gateway or server determines a route based on the route information collected in the registration request step 200, in which case, the route may be determined by applying various methods (algorithms) and/or criteria.

For example, a route can be determined by applying a routing algorithm that minimizes the cost function by using the reciprocal of the signal strength between nodes as the weight of the radio link. have. In addition, a routing algorithm may be applied by multiplying the reciprocal of the signal strength by a predetermined value to more appropriately consider the signal strength. In addition, when the signal strength is less than a certain value, it is determined to have a large weight, and a routing algorithm may be applied.

As another embodiment, a routing algorithm that aims to optimize a maximum depth from a gateway in a network structure connecting nodes may be applied so that as few router nodes are included as possible. As another embodiment, in determining the weight for the link between each node, the shortest path algorithm is used as a routing algorithm so that the reflection ratio of signal strength is lowered and the length of the path (the number of nodes passing through) is shortened. Can be applied as.

In another embodiment, for each router node determined in the path determination step 300, the server or gateway may determine in advance a'spare router node' that can replace the router node when a failure occurs in the corresponding router node. The spare router node may select a node in a position where communication connections can be established by substituting the corresponding router node when communication with lower nodes is impossible due to a failure in the corresponding router node.

The routing algorithm for path determination used in the path determination step 300 is not limited to the above-described embodiment, and various criteria and/or various routing algorithms may be applied in consideration of the purpose of building the IoT control network and the network establishment situation. I can.

When a path for connecting shadow area nodes is determined by a gateway or a separate server, a route setting message including the route information determined in the route setting step 400, which is the fourth step, is transmitted to set the route of the IoT network. Complete.

According to an embodiment of the present invention, the route setting message provides route information including lower nodes connected to the router node to the router node, so that the router node can set its own routing table. The router node may forward the message delivered from the gateway to the lower node according to the set route table. In addition, according to an embodiment of the present invention, the route setting message may inform a higher node to a router node or a general node. When connected directly to the gateway, the gateway becomes an upper node, and when passing through the router node, the router Nodes can become parent nodes. According to this embodiment, a router node or a general node is connected to the IoT control network by setting a route to a gateway or router node, which is an upper node designated in the route setting message.

According to another embodiment, the gateway sends a route setting message to the router node, and the router node completes its own routing table using route information included in the route setting message, and The IoT network can be completed by transmitting a route setting message that allows lower nodes to establish communication connections with themselves. According to this embodiment, since the gateway only needs to transmit the route setting message to the router node, there is an advantage of saving communication cost and setting time.

According to another embodiment, when a spare router node is determined for each router node in the path determination step 300, information on the spare router node for the currently connected router node for lower nodes of each router node Can be notified. Information on the spare router node may be notified using a route setting message or a separate message.

9 illustrates an embodiment of an IoT control network configured according to an automatic setting method of an IoT control network according to the present invention. Nodes 2, 3, and 4 are directly connected to the gateway 1, and nodes 3 and 5 are determined as router nodes to connect the shaded area nodes 5, 6, 7, 8, and nodes 7, 8 are routers. It is connected to node 5, and router nodes 5 and 6 are connected to router node 3, and are connected to the gateway 1 for communication.

According to an embodiment of the present invention, in the route setting step 400, the gateway 1 may set a route as shown in FIG. 9 by transmitting a route setting message to all nodes, respectively.

In addition, according to another embodiment according to the present invention, in the route setting step 400, the gateway 1 receives a beacon signal and establishes a communication connection through a separate process for nodes 2, 3, and 4 capable of direct communication connection. And, by transmitting a route setting message to the router nodes 3 and 5 and the general nodes 6, 7, 8, it is possible to set the route for the shadow area nodes as shown in FIG.

According to another embodiment, the gateway 1 establishes a route by transmitting a route setting message to router nodes 3 and 5, and the router nodes 3 and 5 transmit a separate route setting message to lower nodes to sequentially route the route. Can be set to. In the case of FIG. 9, router node 3 transmits a route setting message to lower node 6 and router node 5, and router node 5 transmits a route setting message to general nodes 7 and 8.

According to another embodiment, the gateway 1 establishes a route by transmitting a route setting message to router node 3, and the router node 3 sets a separate route to router node 5 (in addition to sending a route setting message to node 6). The route is set by sending a setting message, and router node 5 can finally send a route setting message to general nodes 7 and 8 to set the route.

According to another embodiment, in the configuration of the IoT control network as shown in FIG. 9, the gateway 1 selects node 4 as a spare router node for the router node 3 in the path determination step 300, and the path setting step 400 ), it is possible to notify the nodes 5 and 6, which are lower nodes of the router node 3, of the spare router node 4 as well as the router node 3 by using the route setting message. In this case, when nodes 5 and 6 detect a failure in the communication connection with the router node 3, the communication connection can be immediately restored through node 4, which is a spare router node. In addition, it is possible to configure nodes 7 and 8 as router node 5 by using a route setting message and simultaneously configure node 6 as a spare router node. In this case, when nodes 7 and 8 detect a failure in the communication connection with the router node 5, the communication connection can be immediately restored through node 6, which is a spare router node.

10 shows an embodiment of a node constituting an IoT control network according to the present invention. According to the embodiment of FIG. 10, the node of the IoT control network includes a communication unit 10, a sensor unit 20, an information processing unit 30, an interface unit 40, and a power supply unit 50.

The communication unit 10 provides a communication function capable of accessing an IoT control network. The communication unit 10 may send and receive signals using a wired or wireless communication method. For example, the communication unit 10 may use various wireless communication methods such as cellular, LTE-M, NB-IoT, wireless LAN, Bluetooth, and LoRa.

The sensor unit 20 senses information on the LED lighting or external environment and transmits the information to the information processing unit 30. For example, it is possible to sense the illuminance value, location information, or temperature of the LED lighting and transmit it to the information processing unit 30.

The information processing unit 30 analyzes and stores sensor information input from the sensor unit 20, processes control commands transmitted from the communication unit 10 or the interface unit 40, analyzes information collected or generated by a node, or Save it and decide to send it to the gateway or a separate server. For example, the information processing unit 30 may be configured to operate a corresponding node as a router node or a general node according to a control command of the communication unit 10 or the interface unit 40.

Through the interface unit 40, an administrator may input setting information for a node. For example, it is possible to input a setting as a router node or a general node, and a frequency and signal strength used by the communication unit.

The power supply unit 50 supplies power to the information processing unit 10, the sensor unit 20, the communication unit 30, and the interface unit 40. Depending on the environment in which the node is installed, power may be supplied from the outside or may be operated using an internal battery.

The method and apparatus for automatically setting an IoT control network according to the present invention have been described above according to the drawings of the present application, but the present invention is not limited to the configurations and methods shown and described herein. What is disclosed herein is merely illustrated as an embodiment, and various embodiments other than that may be used as the constitution of the present invention, and the scope of the rights is not limited to the constitution and method disclosed herein. Those skilled in the art will understand that various modifications and modifications can be made within the scope of the objects and effects pursued by the present invention.

100: beacon broadcast stage
200: registration request step
210: Gateway registration request step
220: Step of requesting registration of shaded areas
300: path determination step
400: path setting step
10: communication department
20: sensor unit
30: Information processing unit
40: interface unit
50: power supply

Claims (15)

In the automatic setting method of the IoT control network,
A beacon broadcasting step 100 of broadcasting a beacon signal from the gateway to the surroundings;
A gateway registration request step 210 of transmitting a primary registration request message requesting a communication connection with the gateway at the node receiving the beacon signal;
A shadow area registration request step 220 of transmitting a second registration request message to the node that has transmitted the first registration request message when the shadow area node that has not received the beacon signal receives the first registration request message;
A path determination step (300) of determining a path for connection of a shadow area node in a gateway or a separate server based on the path information collected from the registration request messages; And
And a route setting step (400) of setting a route determined in the route determining step by transmitting a route setting message from the gateway or a separate server.
The method of claim 1,
When the shadow area node that has not received the beacon signal and the 1st to kth registration request message in the shadow area registration request step 220 receives the kth registration request message, the node that has transmitted the kth registration request message An automatic setting method of an IoT control network, characterized in that transmitting a (k+1) second registration request message.
The method of claim 2,
When the node receives a second or more registration request message destined for itself, it retransmits it to a gateway.
The method of claim 1,
When the gateway receives the first registration request message, the method for automatically setting an IoT control network, characterized in that for establishing a communication connection with the node that sent the first registration request message.
The method of claim 2,
The k-th registration request message is a message type, a source node, a destination, a beacon signal, or a received signal strength or a beacon signal of the (k-1)th registration request message, or (k-1) Automatic setting method of an IoT control network, characterized in that it includes a received signal time of the second registration request message.
The method of claim 1,
Automatic setting of an IoT control network, characterized in that, in the path determination step 300, a path for connecting the shadow area nodes is determined by using the signal strength of the communication connection between each node collected from the registration request messages. Way.
The method of claim 1,
In the path determination step (300), a route for communication connection of a shadow area node is determined so that as few as possible router nodes are included.
The method of claim 1,
For each router node determined in the path determination step (300), when a failure occurs in the corresponding router node, a spare router node capable of replacing it is determined.
The method of claim 8,
In the route setting step 400, when a failure occurs in the router node to a general node connected to the router node, a spare router node capable of restoring the communication connection by replacing the router node is notified by including in a route setting message IoT control network automatic setting method, characterized in that.
The method of claim 1,
The route setting step 400 transmits a route setting message including route information to the router node determined in the route determining step 300, and the router node sets its own route table using route information, and the An IoT control network automatic setting method, characterized in that transmitting a route setting message to a general node recorded as being connected to the router node in a route table.
In the node device of an IoT control network that can be automatically set,
The device is
A communication unit 10 capable of transmitting and receiving messages with other nodes or gateways;
A sensor unit 20 for detecting a physical quantity or a change thereof around the device; And
Including; an information processing unit 30 for processing the message received by the communication unit 10 and the measured value measured by the sensor unit 20,
The device is
Upon receiving a beacon signal from the gateway through the communication unit 10, a primary registration request message is transmitted to the gateway,
In a state in which the beacon signal is not received, when a primary registration request message is received through the communication unit, a secondary registration request message is transmitted to the originating node of the primary registration request message,
When receiving a route setting message through the communication unit 10, a node device of an IoT control network capable of automatic setting, characterized in that, when a route setting message is received, a route is set using route information included in the route setting message.
The method of claim 11,
When the node device receives the k-th registration request message through the communication unit 10 in a state in which the beacon signal and the first to k-th registration request message are not received, the ( A node device of an IoT control network capable of automatic setting, characterized in that it transmits a k+1) second registration request message.
The method of claim 12,
When the node device receives a second or more registration request message destined for the node device through the communication unit 10, it retransmits it to a gateway.
The method of claim 11,
When the node device notifies the spare router node along with the router node to which the node device is connected to the route setting message received through the communication unit 10, when the router node detects a failure, the spare router node Node device of an IoT control network capable of automatic setting, characterized in that the communication connection is restored by using.
The method of claim 11,
When the route setting message received through the communication unit 10 notifies the node apparatus to a router node, the node apparatus sets its own route table using route information included in the route setting message, and A node device of an IoT control network capable of automatic setting, characterized in that transmitting a route setting message to a lower node recorded as being connected to the node device in a table.

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