Method and device for configuring signal field in wireless LAN system

A device in a wireless local area network (WLAN), the device comprising:

• a memory storing control information used for a received physical layer protocol data unit (PPDU) comprising a first signal field, a second signal field, and a data field;
• and
• a processor coupled to the memory and configure to:
• obtain the received PPDU,
• wherein the first signal field is used for decoding the second signal field,
• wherein the second signal field comprises a common field including common control information and a user-specific field including user-specific control information,
• wherein the user-specific field is encoded separately from the common field and comprises a plurality of user fields,
• wherein irrespective of whether each user field of the plurality of user fields is used for a single user or multiple users assigned for the PPDU, a size of each user field is set to be the same;
• and
• decode the data field based on the second signal field.