Active moving method of moving sink node in wireless sensor network

Abstract

The invention discloses an active moving method of a moving sink node in a wireless sensor network, and belongs to the technical field of the wireless sensor network. According to the method, on the basis of a tree form route multi-hop interconnection model of the wireless sensor network, one-hop neighbor nodes of a current sink node are taken as subtree roots, subtrees are divided to form subtree sets, and the maximum value and the minimum value of remaining energy of a sensor node in each data propagation path in each subtree within a certain range are obtained through the sink node; then according to certain conditions, a dying node sequence and a sink feasible moving position sequence are generated; the sink node selects a proper position in the sequences to move. The sequences are stored in the sink node for a long time and are updated according to energy of a node of the next round. Accordingly, the sink node can be guided to move by mastering extreme values of network energy within a certain range in real time, energy balance among network nodes can be achieved gradually, and time and energy cost brought by a large quantity of repeated inquiries can be effectively reduced at the same time.

Description

technical field [0001] The invention relates to an autonomous movement method of a mobile sink node in a wireless sensor network, which is mainly used to realize energy balance between nodes of the wireless sensor network and improve the network life cycle, and belongs to the technical field of wireless sensor networks. Background technique [0002] Wireless sensor network is an emerging technology. Nodes that integrate sensing, computing, and communication capabilities are organized into a communication network, which is used to perceive the information of the objective world and provide it to people for analysis and judgment. The adaptability, invulnerability, easy deployment and low cost of wireless sensor network make it have broad development prospects in military and industrial fields. In recent years, with the rise of the Internet of Things. Wireless sensor networks have achieved rapid development and are widely used in industrial applications such as smart home and...

AI Technical Summary

Problems solved by technology

[0005] However, the existing sink node movement strategy only looks for a suitable mobile location within the maximum movement radius of the sink node before each movement, and does not comprehensively consider the network energy situation outside the maximum movement radius; and each time the sink node moves It is necessary to re-query the energy status of all nodes within the maximum movement range of the current sink node, and the query efficiency is not high

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