INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD

An information processing device comprises a communication unit (100) that performs data communication with a plurality of other vehicles (B) present around a host vehicle (A), and a controller (110) for controlling the data communication performed by the communication unit (100). The controller (110) specifies each second other vehicle (B) for which a quality of communication with the host vehicle (A) does not satisfy a prescribed standard as a designated moving body. The controller (110) identifies a relative position relative to the host vehicle (A), and a reception power of radio waves received from the designated moving body, for each designated moving body. The controller (110) controls directivity related to wireless communication performed by the communication unit (100) based on the relative position and reception power for each other vehicle (B).