A fast beam training and tracking method for millimeter wave communication of an unmanned aerial vehicle

Abstract

The invention provides a fast beam training and tracking method for millimeter wave communication of an unmanned aerial vehicle. The fast beam training and tracking method for millimeter wave communication of an unmanned aerial vehicle comprises the following steps of: presetting a layered codebook conforming to a hybrid beam forming structure, performing beam matching searching according to a traditional multi-level beam training mode, finding an optimal beam and transmitting a communication signal. The invention has the beneficial effects that: the fast beam training and tracking method formillimeter wave communication of the unmanned aerial vehicle utilizes the continuity characteristic that the millimeter wave communication is mainly LOS path and the movement of the unmanned aerial vehicle, and in most beam mismatch scenes, the new matching beam can be found faster than the traditional layered training scheme.

Description

technical field [0001] The invention specifically relates to a fast beam training and tracking method for millimeter wave communication of unmanned aerial vehicles. Background technique [0002] UAV is a kind of aircraft that is controlled by radio remote control or its own program control device without manned. UAV has the characteristics of simple structure, dynamic deployment, low cost, and reduced casualties, and has played an extremely important role in various fields. During the flight of the UAV, continuous data transmission is required through the communication network and the ground control center. In recent years, millimeter-wave array communication is considered to be an important means to solve UAV Gbit bandwidth communication. When the UAV communicates with the ground using millimeter waves, the beam alignment caused by the strong mobility of the UAV is the main source of overhead for the entire communication system. In response to this problem, the researche...

AI Technical Summary

Problems solved by technology

It is not difficult to find that this scheme has the advantages of low complexity, simple steps and easy operation, but the high mobility of UAVs often makes the beam training process more frequent, and the extra overhead brought by the exhaustive beam training method It will greatly increase the training time and cost. Therefore, it is necessary to design a fast beam training and tracking algorithm suitable for UAVs.

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