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Effective sensor node deployment method based on layering

A sensor node and node technology, applied in transmission systems, network planning, electrical components, etc., can solve the problems of not taking into account the time cost of deployment, node energy loss, the inability to guarantee the best overall effect, and poor practicability.

Inactive Publication Date: 2017-10-20
TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

These algorithms usually only consider the optimization of a single performance of the sensor network, without considering the time cost of deployment, node energy consumption and other issues, and at the same time cannot guarantee the optimal overall effect, and the practicability is relatively poor

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  • Effective sensor node deployment method based on layering
  • Effective sensor node deployment method based on layering
  • Effective sensor node deployment method based on layering

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Embodiment Construction

[0017] The present invention proposes a layer-based effective sensor node deployment method: mainly using Thiessen polygons to realize the layering of nodes, such as figure 1 shown, where V(p i ) is node p i All Thiessen polygons constitute a Thiessen graph; when the average area of ​​Thiessen polygons is used to obtain the settlement nodes, the effect of layer spacing and node coverage is as follows: figure 2 shown, where h overlap Indicates the vertical distance from the point where the sensing ranges of two nodes intersect in the same layer to the layer, Δh is the distance between the sensor nodes of the two layers, and r is the sensing radius of the node; repeat the previous two processes until the settlement-free space is completed Deployment works.

[0018] The main steps are as follows:

[0019] 1. In the initial stage, a certain density of aggregation nodes is placed on the surface of the target water area as an intermediary for data communication between the sens...

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Abstract

The invention relates to an effective sensor node deployment method based on layering. The method comprises the following steps: deploying a part of nodes among the nodes scattered on the surface of a target water area on the water level to serve as aggregation nodes, locating the nodes on the 0 layer, and causing the other nodes to sink for a certain distance relative to the aggregation nodes; generating voronoi diagrams and calculating an average area of the voronois by the sunk nodes, keeping the depths of the nodes greater than the average area unchanged, and causing the nodes smaller than the average area to continue to sink; judging whether a sinking space exists during the sinking, and if the sinking space is greater than a node sensing radius r and is smaller than an interlayer spacing obtained by calculation, changing the sinking distance into r; if the sinking space is smaller than the node sensing radius r, indicating the termination of the node skinning process; performing discontinuous sleep by the nodes that cannot sink on the last layer and serve as redundant nodes; and performing node clustering.

Description

technical field [0001] The invention relates to a node deployment design method in an underwater sensor network. Background technique [0002] In recent years, Underwater Acoustic Sensor Networks (UASNs) has become one of the new research hotspots. The application of UASNs has promoted the research on the marine environment, and is of great significance to the fields of economy, scientific research, and military affairs. However, unlike the traditional land-based wireless sensor network, the underwater sensor network uses acoustic communication, and the communication direction is omnidirectional, and the energy consumed when traveling in different directions underwater is very different; The energy of underwater sensor nodes is limited, and different characteristics such as not easy to replace all put forward new requirements for the deployment of underwater sensor nodes. At the same time, node deployment, as the bottom part of the sensor network, is not only related to th...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W84/18H04B13/02
CPCH04W16/18H04B13/02H04W84/18
Inventor 金志刚冀智华罗咏梅
Owner TIANJIN UNIV
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