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A traffic-aware Q-network enhanced routing protocol based on GPSR for unmanned aerial vehicle ad-hoc networks

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Abstract

In dense traffic unmanned aerial vehicle (UAV) ad-hoc networks, traffic congestion can cause increased delay and packet loss, which limit the performance of the networks; therefore, a traffic balancing strategy is required to control the traffic. In this study, we propose TQNGPSR, a traffic-aware Q-network enhanced geographic routing protocol based on greedy perimeter stateless routing (GPSR), for UAV ad-hoc networks. The protocol enforces a traffic balancing strategy using the congestion information of neighbors, and evaluates the quality of a wireless link by the Q-network algorithm, which is a reinforcement learning algorithm. Based on the evaluation of each wireless link, the protocol makes routing decisions in multiple available choices to reduce delay and decrease packet loss. We simulate the performance of TQNGPSR and compare it with AODV, OLSR, GPSR, and QNGPSR. Simulation results show that TQNGPSR obtains higher packet delivery ratios and lower end-to-end delays than GPSR and QNGPSR. In high node density scenarios, it also outperforms AODV and OLSR in terms of the packet delivery ratio, end-to-end delay, and throughput.

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Correspondence to Guang-hua Song.

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Project supported by the National Natural Science Foundation of China (No. 61501399) and the National Key R&D Program of China (No. 2018AAA0102302)

Contributors

Yi-ning CHEN and Guang-hua SONG designed the research. Yi-ning CHEN, Ni-qi LYU, and Xiao-hong JIANG processed the data. Yi-ning CHEN drafted the manuscript. Guang-hua SONG and Bo-wei YANG helped organize the manuscript. Yi-ning CHEN and Guang-hua SONG revised and finalized the paper.

Compliance with ethics guidelines

Yi-ning CHEN, Ni-qi LYU, Guang-hua SONG, Bo-wei YANG, and Xiao-hong JIANG declare that they have no conflict of interest.

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Chen, Yn., Lyu, Nq., Song, Gh. et al. A traffic-aware Q-network enhanced routing protocol based on GPSR for unmanned aerial vehicle ad-hoc networks. Front Inform Technol Electron Eng 21, 1308–1320 (2020). https://doi.org/10.1631/FITEE.1900401

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  • DOI: https://doi.org/10.1631/FITEE.1900401

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