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Data aggregation method for increasing capacity of wireless sensor network

A wireless sensor and data fusion technology, applied in the field of data fusion, can solve the problems of missing data and effective information, achieve the balance of information validity and redundancy, reduce the number of data transmissions, and reduce energy consumption

Active Publication Date: 2012-05-02
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But they only considered the simplest fusion situation, that is, all data can be merged into one data packet on the same node, which will lose a lot of effective information of the data, which is not consistent with many actual situations

Method used

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  • Data aggregation method for increasing capacity of wireless sensor network
  • Data aggregation method for increasing capacity of wireless sensor network
  • Data aggregation method for increasing capacity of wireless sensor network

Examples

Experimental program
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Embodiment Construction

[0031] Such as figure 1 As shown, in the wireless sensor network of this embodiment, the sensor node serving as the sink node is located at the center of the circle, and other sensor nodes (ie source nodes in the figure) are randomly distributed in the current area. The source node can directly transmit information to the sink node through one hop, or transmit information to the sink node through multiple hops.

[0032] It is assumed that the current network only uses a single channel for transmission, and TDMA is used to schedule information transmission. The information entropy collected by each sensor is the unit amount of information, and each sensor node has a sufficient buffer. The steps of the data fusion method to improve the capacity of the wireless sensor network are as follows: figure 2 Shown as:

[0033] Step 101, determine the distribution and parameters of the network.

[0034] First, determine the area covered by the entire wireless sensor network, the numbe...

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Abstract

The invention discloses a data aggregation method for increasing the capacity of a wireless sensor network. The method comprises the following steps of: homalographically clustering the wireless sensor network by using a circular grid; determining aggregated nodes of the clusters, a data aggregation mode of the network and a data transmission mode of the network; and creating a virtual node and thus acquiring a reachable throughput of the node by adopting a scheduling scheme with a load and correlation. By utilizing the method, an actual communication condition of the wireless sensor network is described by using a mode with the communication characteristic, closer to that of a sensor; and furthermore, the data transmission times in the network are reduced, therefore, the balance of the effectiveness and redundancy of information is realized, and the capacity of the wireless sensor network is increased.

Description

technical field [0001] The invention relates to a data fusion method, in particular to a data fusion method for improving the capacity of a wireless sensor network. Background technique [0002] The rapid development of Micro-Electro-Mechanical System (Micro-Electro-Mechanism System, MEMS), System on Chip (SOC, System on Chip), wireless communication and low-power embedded technology has given birth to Wireless Sensor Networks (WSNs) , and brought about a revolution in information perception with its low power consumption, low cost, distributed and self-organizing characteristics. The wireless sensor network is composed of a large number of miniature sensor nodes deployed in the monitoring area. It is a multi-hop self-organizing network system formed by wireless communication. Its purpose is to cooperatively perceive, collect and process the perceived objects in the network coverage area. information, and send the perception results to the sink node (Sink). It has importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04W72/12H04W84/18
Inventor 陈彩莲刘亚雄关新平
Owner SHANGHAI JIAO TONG UNIV
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