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A Load Balancing Method for Node Tracking in Wireless Sensor Networks

A wireless sensor and load balancing technology, applied in wireless communication, radio wave measurement systems, instruments, etc., can solve problems such as excessive consumption of node energy, and achieve the effect of improving energy and service life and improving load balancing

Active Publication Date: 2020-04-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

In a relatively complex environment, higher challenges are put forward for the service life of sensor nodes. When the tracking conditions are met, the problem of excessive energy consumption of nodes will occur.

Method used

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  • A Load Balancing Method for Node Tracking in Wireless Sensor Networks
  • A Load Balancing Method for Node Tracking in Wireless Sensor Networks
  • A Load Balancing Method for Node Tracking in Wireless Sensor Networks

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Embodiment Construction

[0032] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.

[0033] The present invention uses the Extended Kalman Filter (Extend Kalama Filter, EKF) method to track the unknown nodes entering the sensor network in real time. In the process, it will undoubtedly consume a lot of energy. Aiming at the challenge of excessive energy consumption, the present invention proposes an anchor node "breaking zero" selection mobile solution. Under the condition of satisfying the tracking accuracy, the number of movable anchor nodes is selected by introducing a threshold value, so that the estimated coordinate error of unknown nodes obtained by calculation is close to the upper limit of the required accuracy, so as to realize the anchor nodes that move as little as possible. This application realizes the load balancing...

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Abstract

The invention discloses a load balancing method for node tracking in a wireless sensor network, which is applied in the field of sensor network node communication. In order to solve the problem of excessive consumption of node energy in the prior art in order to meet the tracking conditions; the invention adopts extended Kalman Based on the filtering method to track the unknown nodes entering the sensor network in real time, the number of movable anchor nodes is selected by setting the threshold value, and the estimated position error of the unknown nodes calculated according to the number of movable anchor nodes is close to the set value. Accuracy upper limit, the optimal anchor node movement scheme is obtained; load balancing is achieved while ensuring accuracy.

Description

technical field [0001] The invention belongs to the field of sensor network node communication, and in particular relates to node energy consumption in the sensor node communication process and EKF-based node zero selection technology. Background technique [0002] In the existing wireless sensor network environment, sensor nodes face most of the problems of limited energy and weak computing power. In the existing technical solutions, many anchor nodes are usually dispatched to track, so that the service life of the sensor nodes cannot be extended well, and the node death will occur, and the communication distance between nodes changes in real time, so Additional energy consumption occurs. [0003] Not only that, in a large-scale sensor network, nodes not only play the role of tracking unknown nodes, but also take on the role of collecting a large amount of environmental data and real-time monitoring. The diverse data undoubtedly brings a lot of power to the sensor nodes. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00H04B17/318G01S5/02
CPCG01S5/0294H04B17/318H04W64/006
Inventor 刘强周龙雨董浩杨宁
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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