Routing protocol for wireless sensor network with mobile sink node based on particle swarm optimization

Abstract

The invention provides a data transmission method for a wireless sensor network with a mobile sink node. The wireless sensor network is divided into a plurality of areas through application of the particle swarm optimization; a sensor node is selected from the sensor nodes of each area as a cluster head through application of a similar clustering algorithm; cluster heads communicating with the mobile sink node are determined through three data messages of hello, message-s and message-h. According to the method, an energy hole phenomenon is eliminated, network traffic loads are mitigated, the throughput of the whole wireless sensor network is improved, and a life cycle of the wireless sensor network is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and in particular relates to a wireless sensor network data transmission method based on a mobile convergence node. Background technique [0002] With the rapid development of information technology, mastering instant and effective information plays a vital role for people. Therefore, the means and technologies for collecting information and data have been widely developed and applied, and many emerging information collection technologies and strategies have also been born. Wireless sensor networks (WSN) is one of the most popular data collection technologies at present. Wireless sensor network nodes have many advantages: low energy consumption, easy to distribute in any environment, low cost and self-organized wireless network. These advantages make wireless information perception and collection unprecedentedly simple and convenient. Therefore, it has caused a revolution in t...

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Problems solved by technology

[0004] At present, routing protocols based on mobile aggregation nodes have achieved good results in balancing energy consumption and prolonging the life cycle of wireless sensor networks, but there are still some defects. For example: First, some routing protocols based on mobile aggregation nodes use random movement strategy, which increases the maintenance cost of the data acquisition path and consumes a lot of energy; second, some routing protocols based on mobile sink nodes use the method of dividing grids or clusters, but they do not consider whether the number of grids or clusters divided is Optimum, sensor nodes will waste a lot of unnecessary energy in the communication process; third, in some routing protocols, mobile sink nodes frequently move out of the adaptive area, and their location information needs to be flooded throughout the network, and location updates will generate relatively large high energy consumption and latency

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