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http://dx.doi.org/10.3837/tiis.2022.08.011

Backhaul transmission scheme for UAV based on improved Nash equilibrium strategy  

Liu, Lishan (School of Communication Engineering, Hangzhou Dianzi University)
Wu, Duanpo (School of Communication Engineering, Hangzhou Dianzi University)
Jin, Xinyu (Department of Information Science and Electronic Engineering, Zhejiang University)
Cen, Shuwei (China Mobile Communications Group Zhejiang Co., Ltd. Hangzhou Branch)
Dong, Fang (College of Information and Electric Engineering, Zhejiang University City College)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.16, no.8, 2022 , pp. 2666-2687 More about this Journal
Abstract
As a new alternative communication scheme in 5G, unmanned aerial vehicle (UAV) is used as a relay in the remote base station (BS) for assistant communication. In order to ameliorate the quality of the backhaul link, a UAV backhaul transmission scheme based on improved Nash equilibrium (NE) strategy is proposed. First, the capacity of air-to-ground (A2G) channel by the link preprocess is maximized. Then, the maximum utility function of each UAV is used as the basis of obtaining NE point according to the backhaul channel and the backhaul congestion. Finally, the improved NE strategy is applied in multiple iterations until maximum utility functions of all the UAVs are reached, and the UAVs which are rejected by air-to-air (A2A) link during the process would participate in the source recovery process to construct a multi-hop backhaul network. Simulation results show that average effective backhaul rate, minimum effective backhaul rate increases by 10%, 28.5% respectively in ideal A2G channel, and 11.8%, 42.3% respectively in fading channel, comparing to pure NE strategy. And the average number of iterations is decreased by 5%.
Keywords
UAV relay; Multi-hop backhaul network; NE strategy; Resource recovery; Link preprocess;
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