Method and apparatus for allocating wireless resources based on single resource unit in WLAN

An access point (AP) for allocating a wireless resource based on a single resource unit in a wireless local area network (WLAN), the AP comprising:

• a RF (radio frequency) unit which transmits and receives a wireless signal;
• and
• a processor which is coupled operatively with the RF unit,
• wherein the processor schedules each of a plurality of wireless resources for communication with a plurality of STAs (stations) on a bandwidth,
• wherein the process is implemented to transmit each of a plurality of downlink data to each of the plurality of STAs through each of the plurality of wireless resources,
• wherein when resource allocation based on a virtual allocation resource unit is not supported, each of the plurality of wireless resources comprises only at least one first resource or only at least one second resource,
• wherein a size of the first resource unit is greater than a size of the second resource unit,
• wherein the virtual allocation resource unit is a combination of the at least one first resource unit and the at least one second resource unit including a plurality of data tones which can be interleaved by one interleaver.