Wireless sensor network data aggregation method

A wireless sensor and network data technology, applied in network topology, wireless communication, advanced technology, etc., can solve the problems of inefficient data transmission, low network service quality, limited energy, etc., to maximize network life cycle and improve communication performance , the effect of reducing node energy consumption

CN105898789AActive Publication Date: 2016-08-24NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-08-24

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Abstract

The invention discloses a wireless sensor network data aggregation method. Because the energy of a wireless sensor network of which energy is supplied by micro batteries is limited, once the energy of a certain sensor node in the network is used up, the node will be ineffective, and the communication condition of the whole network will be influenced. According to the method, node scheduling, data prediction and a data aggregation algorithm are combined by using a wireless sensor network data aggregation scheme based on a spatial autocorrelation model; ordinary nodes with relatively low residual energy are scheduled to sleep; moreover, on the basis of data correlation between adjacent nodes of the wireless sensor network, missing data of the sleep nodes is predicted by using a Delaunay triangulation algorithm and the spatial autocorrelation model; and finally aggregation operation is carried out by a cluster head node. According to the method provided by the invention, the data precision is ensured; moreover, transmission of intra-cluster redundant data is reduced; the energy consumption of the sensor nodes is reduced; and the service life of the network is effectively prolonged.
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Description

technical field

[0001] The invention relates to a communication routing technology of wireless node resources, mainly solving the problem of how to reduce data transmission and ensure information quality in application scenarios with limited energy, and specifically relates to a wireless sensor network data aggregation method. Background technique

[0002] Wireless Sensor Networks (WSNs) is a self-organizing network system formed by a large number of tiny, cheap, and low-power sensor nodes through wireless communication. Scalar data (such as humidity, temperature, light intensity) or media data (such as audio and video, images) information in the environment, after multi-hop routing and data aggregation processing, the information is aggregated to the base station node (sink), and then through communication way to send this information to the owner of the network.

[0003] WSNs are usually powered by micro-batteries on sensor nodes, and the battery energy is limited, and th...

Examples

Embodiment Construction

[0042] The specific implementation of the present invention will be further described in detail in conjunction with the accompanying drawings.

[0043] The present invention is based on a layer-cluster wireless sensor network, that is, the nodes in the network are divided into converging nodes, cluster head nodes and ordinary nodes, such as figure 1 As shown, in this network, the cluster head node is responsible for collecting the data in the cluster, and transfers the fused data to the base station node.

[0044] The present invention assumes that the cluster head node can obtain the position of the ordinary nodes in the cluster, and all nodes will not move after the deployment is completed; the deployment of the cluster head node of each cluster is a definite deployment, and there is no need to elect the cluster head node; Ordinary nodes are deployed around the cluster head node; in order to save cost and energy consumption, the cluster head node in the network monitors the ...