Communication method of wireless sensor network UAV system based on optimized particle swarm algorithm

Abstract

The invention discloses a wireless sensor network unmanned aerial vehicle system communication method based on an optimized particle swarm algorithm, which is used for a mobile node unmanned aerial vehicle (1), a ground communication station (2) and a plurality of ground wireless sensor nodes (3) The composed wireless sensor UAV system network includes the following steps: (10) network area division: using optimized particle swarm optimization algorithm to divide the entire network area into multiple sub-areas; (20) sub-area cluster head selection: in each sub-area (3) Calculate the weighted sum and select the cluster head node; (30) Next hop access node selection: the mobile node visits the cluster head node with the largest remaining overflow buffer time, and then selects the cluster head to be visited by the next hop of the mobile node Node; (40) Data transmission: UAV (1) transmits data to ground communication station (2). The wireless sensor network UAV communication method of the present invention has less energy consumption, good network load balance and long network life.

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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