User-centric unmanned aerial vehicle base station multi-beam joint transmission method
A joint transmission and unmanned aerial vehicle technology, applied in the field of wireless communication, can solve problems such as reducing user signal-to-noise ratio, increasing unmanned aerial vehicle co-frequency interference, and data fluctuations
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[0024] The implementation method of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0025] figure 1 It is a schematic diagram of the user-centered UAV base station multi-beam joint transmission method of the present invention. The network dynamically builds a user-centric UAV group for users, and collaborates on transmission within the group. As the user moves, the user's service drone group is constantly updated dynamically.
[0026] Each UAV station is equipped with F antennas, and provides services for F users respectively according to the downlink channel state information CSI. The user determines the UAV group Φ based on the selected UAV group signal condition threshold η and the reference signal received power RSRP received by the user v . Consider the UAV LOS / NLOS link characteristics, the probability of line-of-sight and non-line-of-sight can be modeled as a function of UAV elevation angle,
[0027]
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