A UAV Data Collection Method Based on Minimizing Information Age

Abstract

The present invention discloses a method for collecting UAV data based on minimizing information age, which includes the following steps: (1) data center u_0 obtains the positions of M sensor nodes in the wireless network; The upload time of the node and the clustering weight γ; (3) execute the path planning algorithm according to the obtained data upload time and the flight time η_(k,k^') of the drone; (4) store the current clustering weight γ corresponding to (5) The UAV starts from the data center, and the optimal UAV flight trajectory u^* is obtained according to the above. The present invention provides a clustering method to pre-adjust the location of UAV data collection points and the distance between them and sensor nodes, effectively balancing the data transmission time of all sensor nodes and the flight time of UAVs, so that The information age of sensor nodes does not increase sharply with the increase of network scale, so it is suitable for different wireless sensor network scales.

Description

technical field [0001] The present invention relates to the field of wireless sensor network data collection, in particular to a novel unmanned aerial vehicle data collection method based on minimizing information age. Background technique [0002] The essence of the wireless sensor network is to obtain the effective data required by the application from the monitoring scene through the flexibly deployed sensors. It is the link between the perception layer and the application layer, so it is very important to design a reasonable wireless data collection scheme; it is widely used at present. The most common wireless data collection methods include multi-hop wireless routing and forwarding, the Internet of Things and satellite communication. Due to the disadvantages of high power consumption, low reliability, high system maintenance costs, and high construction costs, they cannot be effectively applied to some special scenarios, especially for For scenarios with sensitive data...

AI Technical Summary

Problems solved by technology

[0004] In order to improve the performance of data collection, the existing UAS data collection technology is mainly improved and optimized in two aspects of UAS communication and flight control; Abdulla et al. This paper proposes an energy-efficient UAV data collection method based on adaptive modulation and time-division multiplexing. The sensor nodes are divided into different clusters, and the cluster head of each cluster has a fair time-division access channel opportunity. communicate directly, but they do not take into account the timeliness of the data collected

In the article "Age optimal information gathering and dissemination on graphs", Tripathi et al. proposed a data collection and dissemination method based on network graphs to minimize the average and peak information ages. UAVs, as mobile data relay nodes, travel along the network graph. Flying along the optimal random path, traversing and visiting each sensor node, when the number of sensor nodes in the network increases, the age of the collected data information will increase, and the timeliness of the data cannot be guaranteed

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