Communication device

A communication device capable of improving the accuracy of determining the position of a wireless tag includes an antenna, a drive unit, a first acquisition unit, an input unit, a second acquisition unit, and a measurement control unit. And a driving unit that moves the position of the antenna. The first acquisition unit acquires tag data for each wireless tag at a plurality of positions of the antenna. And an input unit that inputs the tag data of each wireless tag acquired by the first acquisition unit to the learning completion model. And a second acquisition unit that acquires, from the learning completion model, data indicating a level related to a range in which each wireless tag exists, on the basis of tag data of each wireless tag input to the learning completion model via the input unit. And a measurement control unit that, if the level of the plurality of wireless tags acquired on the basis of one or more measurement processes for the plurality of wireless tags does not satisfy a condition, control