Unmanned aerial vehicle backhaul transmission control method based on improved Nash equilibrium strategy

Abstract

The invention discloses an unmanned aerial vehicle backhaul transmission control method based on an improved Nash equilibrium strategy. The method comprises the following steps: S10, acquiring position information of a base station, position information of an unmanned aerial vehicle establishing a backhaul link with the base station and demand rate information of each unmanned aerial vehicle; s20, setting initialization links of all the unmanned aerial vehicles to be directly connected to the base station, and defining the unmanned aerial vehicles capable of meeting the rate required by the unmanned aerial vehicles as resident unmanned aerial vehicles; s30, taking an ordered combination of all non-resident unmanned aerial vehicles participating in the Nash equilibrium process at a time as one iteration, and performing continuous iteration until the formed backhaul network is Nash converged; s40, finding all the unmanned aerial vehicles which are repelled by the air-to-air link in the process of participating in Nash equilibrium; and S50, connecting the unmanned aerial vehicle repelled by the air-to-air link to the unmanned aerial vehicle with the return link transmission rate margin, and performing optimized access matching. The invention solves the problem of how to maximize the effective backhaul data transmission rate when multiple unmanned aerial vehicles remotely serve ground users, and provides an unmanned aerial vehicle backhaul network forming scheme based on an improved Nash equilibrium strategy.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to an unmanned aerial vehicle backhaul transmission control method based on an improved Nash equilibrium strategy. Background technique [0002] UAV communication, as a new type of network service alternative, is often used for auxiliary communication in areas where the base station cannot cover. At present, a reliable auxiliary communication solution is that the UAV acts as a relay to establish a backhaul link with the base station and then Transmitting data to ground users to obtain an efficient transmission channel greatly reduces the high link loss caused by the direct connection between the base station and the user. Therefore, research on how UAVs perform auxiliary communication is of great importance to the new generation of mobile communication. Network is very important. [0003] Most of the current solutions focus on how to deploy UAVs to maximize coverag...

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Problems solved by technology

[0003] Most of the current solutions focus on how to deploy UAVs to maximize coverage, how to allocate resources to maximize throughput or spectrum efficiency, etc., but often ignore the backhaul link of UAVs Due to the limitation of the data transmission rate of the forward link, this paper proposes a UAV backhaul transmission scheme based on the improved Nash equilibrium strategy. After the UAV deployment is completed, the current UAV position information and demand rate Information forms a tree-like multi-hop backhaul network to meet the demand rate to the greatest extent to achieve the purpose of maximizing the effective transmission rate

However, this method also has certain limitations. This method has different performances under different UAV distributions. In particular, when all UAVs are too far away from the base station and the UAV demand rate When the value is high, the effect of this scheme is not obvious

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