A classification method for classifying physical layer protocol data units (PPDU) for further RF quality analysis is described. The classification method Includes: receiving a plurality of PPDUs; processing the plurality of PPDUs by a PPDU classification algorithm, thereby obtaining at least one classification parameter being associated with at least one of at least two different classes; and augmenting the PPDUs with classification information based on the at least one classification parameter, thereby obtaining augmented PPDUs. Further, a classification apparatus comprising one or more circuits for classifying physical layer protocol data units (PPDU) for further RF quality analysis is described.