Wireless sensor network cooperation method based on dynamic link

Abstract

The invention discloses a wireless sensor network cooperation method based on a dynamic link. A specific embodiment of the method comprises the following steps: establishing a tracking link on the surrounding of a target to track the target, wherein with the movement of the target, the tracking link gradually increases or deletes nodes therein; receiving sensing data sent by an upstream node by each node of the tracking link, performing fusion processing on the data and the data observed by itself, generating new data, and sending the new data to a downstream node until to a chain head node, fusing all received sensing data with the data observed by the chain head node, and sending the fused data to an aggregation node; and serving as the chain head node by each node on the tracking link in turn. By adoption of the method, on one hand, the problem that when the position of the target changes in the existing structure based on dynamic cluster or tree, the cluster or tree needs to reestablished to generate a large cost, and on the other hand, the sensing data of the tracking node can be locally fused, thereby improving the data transmission efficiency of the network.

Description

technical field [0001] The present application relates to the field of communication technologies, in particular to the field of Wireless Sensor Network (WSN, Wireless Sensor Network), and in particular to a method for node cooperation in a wireless sensor network based on a dynamic chain, which can be used for dynamic target tracking and positioning of wireless sensor networks. Background technique [0002] In recent years, with the rapid development and maturity of sensing technology, embedded technology and wireless communication technology, WSN with sensing ability, computing ability and communication ability has quickly become a research hotspot in the field of communication. WSN is composed of a large number of inexpensive micro-sensor nodes deployed in a specific area, which sense, collect and process the information of the monitored object in real time, and transmit the processed information to the interested network user terminals. Compared with traditional wireless...

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Problems solved by technology

However, when the target location changes, the root node of the tree needs to be replaced and the structure of the dynamic tree itself needs to be re-established, which makes the energy efficiency of such methods greatly reduced

[0004] Therefore, the current node self-organization method and network architecture for target tracking cannot obtain satisfactory system performance. It is urgent to study a self-organization and cooperation method between WSN nodes for moving target tracking to improve tracking efficiency and save network energy consumption.

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