[Object] To provide a mechanism in which Listen-Before-Talk (LBT) can be efficiently executed using a millimeter-wave band.[Solution] An apparatus including: a processing unit configured to infer, on a basis of a result of LBT related to at least one first unit frequency band included in a group that includes a plurality of unit frequency bands, a result of LBT related to a second unit frequency band other than the first unit frequency band included in the group.