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A method for relocating sink nodes based on virtual force

A technology of aggregation nodes and relocation, applied in the directions of location-based services, specific environment-based services, advanced technologies, etc., can solve problems such as lack of flexibility and scalability

Active Publication Date: 2020-07-10
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Some scholars use mobile sink nodes to move along the preset path on the previous basis, which will lack flexibility and scalability, because when this method is applied to other networks, the moving path of sink nodes will be redesigned

Method used

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  • A method for relocating sink nodes based on virtual force
  • A method for relocating sink nodes based on virtual force
  • A method for relocating sink nodes based on virtual force

Examples

Experimental program
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Embodiment 1

[0061] Embodiment 1: as Figure 1-9 As shown, a virtual force-based sink node relocation method includes the following steps:

[0062] Step1. When the network starts, the sink node s collects the position and remaining energy information of all nodes. The specific steps are:

[0063] Step1.1. Establish a virtual gravity model

[0064] All sensor nodes have a virtual gravitational force on the sink node s, which is just like universal gravitation, so according to the universal gravitational force in physics The formula analogy obtains the virtual gravitational model of sensor node i where a i and a respectively represent the remaining energy of node i and sink node s, because the energy of sink nodes is generally regarded as infinite and it does not consume energy, so a is a constant and can be merged into k A , and then calculate the virtual gravitational force between node i and sink node s, namely:

[0065]

[0066] where k A is a constant representing the virtual...

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Abstract

The invention relates to a fictitious force-based wireless sensor network aggregation node re-positioning method and belongs to the technical field of energy conservation for prolonging the life cycleof a wireless sensor network. The method comprises the following steps of firstly, obtaining the information such as the position and the residual energy of all sensor nodes; secondly, according to afictitious force model, figuring out the virtual gravity and the boundary repulsive force generated by all the nodes and applied to an aggregation node; finally, driving the aggregation node to moveto a new position under the action of a resultant force and along the direction of the resultant force so as to realize the data collection and treatment. According to the invention, the residual energy of a sensing node, the distance between the sensing node and the aggregation node and the position of the sensing node in a network topology are comprehensively considered to construct a fictitiousforce model. The aggregation node is enabled to move towards a region with a high residual energy in nature, so that the energy consumption between nodes is balanced. The formation of an energy cavity is effectively avoided, and a novel method is provided for prolonging the life cycle of the wireless sensor network.

Description

technical field [0001] The invention relates to a method for relocating a convergence node based on virtual force, and belongs to the technical field of wireless sensor networks. Background technique [0002] A wireless sensor network (Wireless Sensor Network, WSN) is a wireless network composed of a large number of static or mobile cheap sensors in a self-organizing and multi-hop manner, which provides diverse services for many applications, such as monitoring and control in business system, weather monitoring, medical health system monitoring and battlefield surveillance, etc. In these systems, sensors are deployed in the geographical detection area covered by the network to cooperatively perceive, collect, process and transmit the monitoring information of the sensing objects and report to the user. [0003] Since sensor nodes are usually deployed in harsh environments, the battery energy they can carry is very limited, and the battery cannot be charged or replaced in ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W4/38H04W40/10H04W52/18H04W64/00H04W84/18
CPCY02D30/70
Inventor 冯勇杨心付晓东钱谦
Owner KUNMING UNIV OF SCI & TECH
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