Energy efficient single mobile beacon node assisted positioning method in wsns

Abstract

The invention relates to a single-movement beacon node auxiliary positioning method based on energy efficiency in WSNs. A WSNs model comprises a plurality of randomly deployed static unknown nodes and a single-movement beacon node. The method mainly includes the steps of determining the communication radius of the single-movement beacon node; determining the network resolution; deploying the positions of position information packets broadcasted by the single-movement beacon node; planning the route of the single-movement beacon node; periodically broadcasting the position information packets in the movement process of the single-movement beacon node, wherein the content of the position information packets includes coordinate information and beacon of the movement beacon node at the moment; continuously monitoring and receiving the position information packets through the static unknown nodes, and calculating position coordinates of the nodes through trilateration to complete positioning. The energy consumption of the single-movement beacon node is reduced on the basis of high positioning precision. In addition, the invention further relates to a method for planning the route of the single-movement beacon node under the existence of obstacles and a method for deploying the positions of the position information packets at the moment.

Description

technical field [0001] The invention belongs to the field of wireless sensor networks, in particular to an energy-efficient single mobile beacon node assisted positioning method in WSNs. Background technique [0002] In WSNs, determining the location information of unknown nodes is a very important task, because unknown nodes provide basic support for many location-aware protocols and applications. The obtained information needs to be combined with the position of the node to provide more accurate data information for the observer. In addition, WSNs can also be used in monitoring applications to track specific targets, and the tracking algorithms used also require sensor nodes to provide corresponding location information. These requirements have promoted the development of efficient localization protocols in WSNs. [0003] Localization is the process of finding information about the location of nodes in a given system. In order to determine the location information of a ...

AI Technical Summary

Problems solved by technology

[0012] (1) Most of the existing research does not consider the energy consumption of the mobile beacon node in the process of starting, turning, and moving at a constant speed. It is based on the ideal situation of the mobile beacon node, or only considers the energy consumption of sending and receiving information packets;

[0013] (2) Most path planning algorithms can accurately locate unknown nodes inside the monitoring area, but cannot accurately locate nodes at the edge of the network;

[0014] (3) Most path planning algorithms with more accurate positioning have many turning processes, which consume a lot of energy, but the positioning of algorithms with few turning processes is not accurate enough

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