| CPC H04W 16/28 (2013.01) [H04B 7/046 (2013.01); H04W 36/0058 (2018.08); H04W 36/249 (2023.05); H04W 36/324 (2023.05); H04W 36/328 (2023.05)] | 11 Claims |
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1. A base station apparatus, comprising:
a receiver configured to receive beam control information generated based on a result of movement detection from a terminal according to movement detection in the terminal in which a communication link is established with a base station apparatus through a beam pattern;
a controller configured to control a beam pattern to be tracked and formed at a change position predicted from the terminal by adjusting a directing direction of the beam radiated to the terminal based on the beam control information; and
a generator configured to generate a beamforming codebook in which a tilt variable value for forming a beam pattern is matched for each of at least one change prediction position that is a change position predicted for the terminal based on movement displacement information of the terminal which is a tilt variable value required for adjusting the directing direction of the beam radiated to the terminal,
wherein the beam control information includes the movement displacement information, and
wherein, when a signal having equal to or greater than predefined minimum signal strength transmitted from the terminal is not received through a beam pattern tracked and formed by the change position of the terminal, the controller forms a unicast beam pattern for each of the at least one change prediction positions based on the beamforming codebook.
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