Tree-based WSNs mobile sink node adaptive position update energy consumption optimization method

Abstract

The invention provides a tree-based WSNs mobile sink node adaptive position update energy consumption optimization method, a mobile sink node moves according to a specific motion model, and the method comprises the following steps: firstly, determining an elliptical position update area according to motion parameters of the mobile sink node, thereby determining a meeting point selection threshold; secondly, constructing a meeting point and non-meeting point set according to a meeting point selection threshold value; performing cluster head selection on a non-meeting point set according to a basic framework of an LEACH algorithm; and finally, according to the residual energy and transmission energy consumption of the cluster heads, constructing a father node selection target function, and selecting a next hop father node for each cluster head, thereby constructing a node-cluster head-meeting point-mobile sink node transmission path tree; repeating the process until all nodes die; and comprehensively considering factors such as motion parameter change of the mobile sink node, directionality of data transmission, energy consumption of the node and the like, so that the service life of the network is prolonged, data delay is reduced, and network load is balanced.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor network communication, and in particular relates to a tree-based WSNs mobile convergence node self-adaptive location update energy consumption optimization method. Background technique [0002] Wireless Sensor Networks (WSNs) consist of thousands of sensor nodes. With the rapid development of wireless communication technology, wireless sensor networks have a greater application space. Sensor nodes can be deployed in many unmanned or poor living conditions, which brings great challenges to the collection of monitoring data of these sensor nodes. The introduction of mobile sink nodes is of great help to the collection of monitoring data. Therefore, for the introduction of mobile aggregation nodes, how to balance network energy consumption, prolong network life, and reduce network data delay has become an important research topic. [0003] In WSNs, the energy carried by the sensor nodes is...

AI Technical Summary

Problems solved by technology

[0005] 1. The mobile aggregation node needs to frequently notify the sensor node of the new location information, resulting in excessive energy consumption of the sensor node;

[0006] 2. The mobility of the mobile aggregation node leads to constant changes in the topology of the data transmission network, unbalanced energy consumption and data delay of each sensor node in the network;

[0007] 3. The cluster head node sends data to the mobile sink node through a single hop, and some cluster heads are far away, which is easy to die prematurely

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