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A data aggregation method for wireless sensor networks

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

Active Publication Date: 2019-04-30
NANJING UNIV OF POSTS & TELECOMM
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of data redundancy, limited energy, low network service quality and inefficient data transmission in traditional wireless sensor networks

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  • A data aggregation method for wireless sensor networks
  • A data aggregation method for wireless sensor networks
  • A data aggregation method for wireless sensor networks

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Embodiment Construction

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

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

[0044] The present invention assumes that the cluster head node can obtain the position of the common node in the cluster, and all nodes are stationary and no longer move after the deployment is completed; the deployment of the cluster head node of each cluster is a definite deployment, and no cluster head node election is required; in the network The common nodes in the network are deployed around the cluster head node; in order to save costs and energy consumption, the cluster head n...

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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.

Description

Technical field [0001] The invention relates to a communication routing technology for wireless node resources, and mainly solves 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 (Wireless Sensor Networks, WSNs) is a self-organizing network system formed by a large number of miniature, inexpensive, low-power sensor nodes through wireless communication, and the nodes sense, collect, process and transmit around Scalar data (such as humidity, temperature, light intensity) or media data (such as audio and video, images) information in the environment, and after multi-hop routing and data aggregation processing, the information is aggregated to the base station node (sink), and then through communication Ways to send this information to the owner of the network. [0003] WSNs are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/06H04W40/10H04W40/32H04W52/02H04W84/18
CPCH04W24/06H04W40/10H04W40/32H04W52/0209H04W84/18Y02D30/70
Inventor 瞿佳雯孙力娟郭剑
Owner NANJING UNIV OF POSTS & TELECOMM
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