An apparatus of a station (STA) includes memory and processing circuitry coupled to the memory. The processing circuitry is configured to encode a capabilities element for transmission to an access point (AP). The capabilities element including a media access control (MAC) capabilities information field indicating a trigger frame MAC padding duration. The processing circuitry decodes an extremely high throughput (EHT) protocol data unit (PPDU) received in response to the capabilities element. The EHT PPDU includes an EHT trigger frame (EHT-TF) in a data portion of the EHT PPDU, a packet extension (PE) field, and a dummy orthogonal frequency division multiplexing (OFDM) symbol extending the PE field. The processing circuitry performs physical layer (PHY) and MAC processing of the EHT PPDU based on a duration of the dummy OFDM symbol.