KR101004798B1 - Potential peer producing method and system thereof using P2P sensor network - Google Patents

Abstract

The present invention relates to a method for providing a service of a sensor network using a P2P network, wherein each sensor node using a wireless communication having limited resources and unreliable reliability is configured as a virtual peer, and each sink The node defines a service technology that collects, analyzes and provides sensor data transmitted from each sensor node, creates a virtual peer that operates in the P2P network, and registers it in the P2P network. Discloses a technology for easily searching for sensor information desired to be provided and requesting the corresponding information to receive a sensor information service.

Sensor Network, Sync Node, Peer to Peer, P2P, Virtual Sensor Network, Virtual Sensor Peer, Virtual Sensor Peer

Description

Method and apparatus for creating a virtual peer for each sensor node using P2P network {Potential peer producing method and system using using P2P sensor network}

The present invention relates to a method and apparatus for providing a service of a sensor network using a Peer to Peer (hereinafter P2P) network, and more particularly, to define a service description (description) that can be provided for each sensor node of the sensor network, P2P network A method and apparatus for creating a virtual peer operating in the same.

In the conventional sensor network service, a separate sensor information server is constructed and stored in order to monitor sensor information remotely through an internet network, and a user is provided with a service by accessing the server.

In the prior art, since the user who wants the information of the sensor has to know in advance the address of the sensor information server and the type of service provided by the server, there is a problem that sharing of sensor information is limited.

On the other hand, P2P networks commonly used for file sharing services on the Internet can find current serviceable information through search, even if the user who wants the information does not know about the subject with the information. Can be provided upon request.

In addition, since the sensor node can be installed or moved in various places in a small size, and there can be various kinds and a large number of sensor nodes in a specific area, data is transmitted by using wireless. In addition, the power limitations of the battery, and the data size and simplicity of the form, limit the computational power.

Therefore, a P2P network that connects sensor nodes with these characteristics to the Internet that takes more load than simply transmitting sensor data, and performs operations without direct communication without guaranteeing the reliability of wireless communication Using it as a peer has a lot of problems in reality.

Accordingly, an object of the present invention is to process sensor data having a temporal and positional characteristic through a P2P network in a sink node that collects and processes data of the sensor nodes, and virtually processes each sensor node in the sink node. It is created as a peer to provide sensor network service using a P2P network.

The object of the present invention is a sink node having a stable power supply and sufficient computing power and connected to the Internet, a data collection unit for receiving data transmitted by the sensor nodes;

A data analyzer for identifying the collected sensor data for each node and interpreting the data;

A data processing unit generating sensor information by adding position information of the sink node and time information of the sensed data to the sensor data;

A service description generation unit for generating a P2P service description by combining the information of the sensor node and the information of the sink node analyzed by the data analyzer;

This is accomplished by providing a P2P sensor network service providing apparatus including a virtual sensor peer that creates a virtual sensor peer (VSP) and registers a peer to a P2P network and executes a virtual sensor peer (VSP). .

In addition, in order to achieve the object in the present invention, receiving the data transmitted by the sensor nodes in the sink node;

Identifying the collected sensor data for each node and interpreting the data;

Generating sensor information by adding location information of the sink node and time information of the sensed data to the sensor data;

Generating a P2P service description by combining the sensor node information and the sync node information analyzed by the data analyzer;

This is achieved by providing a P2P sensor network service providing method comprising creating a virtual sensor peer (VSP), registering a peer with a P2P network, and executing a virtual sensor peer (VSP).

According to the present invention, a virtual sensor peer (VSP) is created and executed at a sink node, so that each sensor node can be used as a peer of a P2P network, thereby overcoming the limitations of the sensor node and free sensor information in the P2P network. It's a great way to search and share it.

Hereinafter, with reference to the accompanying drawings, a specific technical configuration for the practice of the present invention will be described in detail.

      1 is a view showing the overall configuration of the present invention by showing the state in which the sensor nodes are connected to the P2P network by configuring a virtual sensor peer (VSP) in the sink node according to the present invention. According to FIG. 1, a system according to the present invention includes a sensor network 100, a sink node 110 for creating a virtual sensor peer (VSP), and a P2P network 120.

      Data measured by each node of the sensor network 100 is transmitted to the sink node 110 using a wireless medium such as ZigBee. The wireless medium that the sensor node can use is not limited to the ZigBee described herein.

The sink node 110 receives and analyzes the data transmitted by the sensor network 100, processes the processed data into a form suitable for the current state. In addition, when a new sensor node starts to operate, a service description (Description) is defined to operate a virtual sensor peer (VSP). The sink node collects and processes sensor data, and then expands the role of a conventional sensor network gateway that provides remote users to operate each sensor node as a virtual peer of a P2P network.

       The P2P network 120 is a communication network to which virtual sensor peers (VSPs) of the sink node 110 and general user peers are connected using the Internet. Data exchange between peers is all through the P2P network.

2 is a diagram illustrating a preferred embodiment of the sink node 110 interface according to the present invention. According to FIG. 2, the sensor data processing unit 200 is hierarchically positioned above the sensor network interface 210 and the internet interface 220, and includes virtual sensor peers 230. In addition, sensor data may be collected, processed and appropriately processed to create a virtual sensor peer 230 or provide services to other peers. The virtual sensor peers 230 are directly connected to the internet interface 220 to serve as a peer of the P2P network 120.

       3 is a flowchart illustrating a preferred embodiment of a method in which each sensor node performs initialization in a sink node according to the present invention. According to FIG. 3, when a specific sensor node starts operation and transmits sensor data, the sink node 110 receives the data 300 and analyzes the data 310 to extract necessary information. If it is a new sensor node, a P2P service description is defined by combining the node ID calculated from the analyzed data and the location information predefined in the sink node based on the logical information (320). In operation 330, a virtual sensor peer (VSP) having an ID for identifying a corresponding sensor node and information on a generated service description definition is generated and executed. When the virtual sensor peer (VSP) is normally executed, it registers with the P2P network 120 (340) and performs the role of a peer (Peer).

4 is a diagram illustrating a structure of one exemplary temporary date when a remote user peer 400 performs sensor information retrieval according to the present invention. According to FIG. 4, a remote user who wants to retrieve sensor information transmits a search word to neighboring peers as well as actual peer nodes as well as virtual sensor peers (VSPs) of the sink node 110.

       FIG. 5 is a flowchart illustrating a method for processing a search request by a peer receiving a search request according to the present invention. According to FIG. 5, peers receiving a search word of another peer compare 500 with their service technology, and if there is a match, transmit service description information to the peer that sent the search word. 510), if there is no match, it ends without performing any operation.

       FIG. 6 is a detailed flowchart illustrating a method of operating a virtual sensor peer (VSP) that is requested to provide a sensor information service according to the present invention. According to FIG. 6, a virtual sensor peer (VSP) that is requested to provide sensor information service from a remote user peer (VSP) identifies an ID of a sensor node in sensor data received by the sink node 110 so as to identify itself. Collecting data of the node in charge (610). The location information included in the service technology already defined and the current time information are added to process the device 620 to provide an appropriate service. When processing is finished, the service is sent to the requesting peer.

Although specific and preferred embodiments of the present invention have been described in the above description, various modifications and changes can be made by those skilled in the art without departing from the scope of the present invention.

Therefore, the scope of the present invention is of course not limited to the above-described embodiment and the accompanying drawings.

FIG. 1 is a view showing an entire preferred embodiment in which each sensor node is connected to a P2P network by configuring a virtual sensor peer in a sink node according to the present invention.

Figure 2 is a detailed block diagram of a preferred embodiment of the sink node interface according to the present invention.

3 is a flowchart of a preferred embodiment of a method in which each sensor node performs initialization in a sink node according to the present invention.

4 is a detailed block diagram of a preferred embodiment in which a remote user peer performs sensor information retrieval according to the present invention.

5 is a flowchart illustrating a preferred embodiment of a method for processing a search request by a peer receiving a search request according to the present invention.

6 is a detailed flowchart illustrating a preferred method of operating a virtual sensor peer (VSP) that is requested to provide a sensor information service according to the present invention.

Claims (8)

A data processing unit generating sensor information by adding position information of the sink node and time information of the sensed data to the sensor data; A service description generating unit generating a P2P service description by combining the sensor node information and the sync node information analyzed by the data analyzer; And a virtual sensor peer unit that generates a virtual sensor peer (VSP), registers a peer to a P2P network, and executes a virtual sensor peer (VSP). The apparatus of claim 1, wherein the data is processed to add the location information and the time information to the sensing data so that the sensor information can be represented in the P2P network. The apparatus of claim 1, wherein the service node combines the information of the sensor node and the information of the sink node to generate a service description that can be provided in a P2P network. 2. The apparatus of claim 1, wherein the device creates a virtual sensor peer (VSP), registers a peer with a P2P network, and executes a virtual sensor peer (VSP). Generating sensor information by adding position information of the sink node and time information of the sensed data to the sensor data by the data processor; Defining a P2P service description by combining the information of the sensor node and the information of the sink node analyzed by the data analyzer by the service description generator; A virtual sensor peer (VSP) is created by the virtual sensor peer unit, registers a peer to the P2P network, and includes a virtual sensor step of executing a virtual sensor peer (VSP). How to Provide. 6. The method of claim 5, wherein the data is processed to add the location information and the time information to the sensing data so as to indicate the characteristics of the sensor information in the P2P network. The method of claim 5, wherein a service description that can be provided in a P2P network is defined by combining the information of the sensor node and the information of the sink node. The method of claim 5, wherein the virtual sensor peer (VSP) is created, a peer is registered in a P2P network, and a virtual sensor peer (VSP) is executed.

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