In a wireless local area network system, a transmitting station (STA) may receive a trigger frame including a user information list. The user information list comprises first and second user information fields, wherein the first user information field includes information related to a first resource unit (RU) for the transmitting STA, and the second user information field may include information related to the second RU for the transmitting STA. The transmitting STA may transmit first data through the first RU and transmit second data through the second RU.