Method for reporting channel state information in order for performing antenna array-based beamforming in wireless communication system, and device therefor

A UE reporting channel state information (CSI) for beamforming based on an antenna array in a wireless communication system, comprising:

• a transceiver configured to transmit/receive RF signals;
• a memory;
• and
• a processor connected to the transceiver and the memory,
• wherein the processor is configured:
• to receive a channel state information reference signal (CSI-RS);
• to generate channel state information using the CSI-RS and a codebook generated in advance;
• and
• to report the channel state information,
• wherein the channel state information includes information related to a codevector determined in the codebook,
• the antenna array has a three-dimensional shape having omnidirectional symmetry,
• the codebook is generated based on a position of the UE having the center of the three-dimensional shape as an origin, and
• the position of the UE is represented based on a polar coordinate system.

A drone reporting channel state information (CSI) for beamforming based on an antenna array in a wireless communication system, comprising:

• a transceiver configured to transmit/receive RF signals;
• a memory;
• and
• a processor connected to the transceiver and the memory,
• wherein the processor is configured:
• to receive a channel state information reference signal (CSI-RS);
• to generate channel state information using the CSI-RS and a codebook generated in advance;
• and
• to report the channel state information,
• wherein the channel state information includes information related to a codevector determined in the codebook,
• the antenna array has a three-dimensional shape having omnidirectional symmetry,
• the codebook is generated based on a position of the drone having the center of the three-dimensional shape as an origin, and
• the position of the drone is represented based on a polar coordinate system.