The present invention provides a new uplink (UL) Physical layer Protocol Data Unit (PPDU) frame format to support Multi-User Multiple Input Multiple Output (MU-MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA), and methods, apparatuses, etc. therefor. In an aspect of the present invention, a method by a station (STA) for transmitting an UL PPDU frame to an Access Point (AP) simultaneously with one or more other STAs in a Wireless Local Area Network (WLAN) may include receiving a frame including a parameter for the PPDU frame from the AP; and participating in UL MU PPDU frame transmission based on the parameter.