Wireless sensor network unmanned aerial vehicle system communication method based on optimization particle swarm algorithm

Abstract

The invention discloses a wireless sensor network unmanned aerial vehicle system communication method based on an optimization particle swarm algorithm. The method is used for a wireless sensor unmanned aerial vehicle system network composed of a mobile node unmanned aerial vehicle, a ground communication station (2) and multiple ground wireless sensor nodes (3), and comprises the following steps:(10) network region partition: the whole network region is partitioned into multiple sub-regions by using the optimization particle swarm algorithm; (20), sub-region cluster head selection: a sensornode in each sub-region computes weight sum, and selects a cluster head node; (30) next-hop access node selection: the mobile node accesses the cluster head node with the maximum residual overflow cache time, and then selects the cluster head node needing to be accessed by the next hop of the mobile node; and (40) data transmission: the unmanned aerial vehicle (1) transmits the data to the groundcommunication station (2). Through the wireless sensor network unmanned aerial vehicle communication method disclosed by the invention, the energy consumption is less, the network load equilibrium isgood, and the network life is long.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, in particular to a wireless sensor network UAV system communication method based on optimized particle swarm algorithm with less energy consumption, good network load balance and long network life. Background technique [0002] Wireless sensor networks (WSNs) are composed of a large number of tiny and cheap sensor nodes deployed in a specific monitoring area. These nodes can sense the information in the monitoring area and send the collected data to the sink node. These nodes build a self-organizing network through wireless communication, and the nodes can communicate with each other and perform data transmission. [0003] The wireless sensor network UAV system is a data collection system for mobile aggregation nodes. The architecture is as follows: figure 1 shown. It consists of a drone, several ground wireless sensors and a ground communication station. In the wireless senso...

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Problems solved by technology

[0004] However, the existing wireless sensor network UAV system communication adopts the method of dividing multiple areas and setting up multiple base stations for communication. However, because the base station can only collect data in a fixed area and the energy of the UAV is limited, etc., the cluster Inter-communication consumes a lot of energy, and the energy of the network is unbalanced. There is a so-called "hot spot problem", that is, the sensor node that is closer to the base station causes the energy consumption of the node to be too fast because of forwarding the data of other nodes. At the same time, due to The base stations in each area are fixed, and there is still the problem that the network life is not long enough

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