Method and device for forming control field comprising information about resource units in wireless LAN system

An apparatus in a wireless local area network (WLAN) system, the apparatus comprising:

• a radio frequency (RF) unit for transmitting a physical layer protocol data unit (PPDU);
• and
• a processor operatively coupled to the RF unit,
• wherein the processor is configured for:
• generating the PPDU including a first, a second, a third and a fourth data field used for a first, a second, a third and a fourth frequency band, respectively;
• and
• transmitting the PPDU,
• wherein the PPDU includes a first signal field used for the first frequency band and a second signal field used for the second frequency band,
• wherein the first signal field includes first identification information on at least one station (STA) allocated to the first data field and the third data field,
• wherein the first signal field further includes first allocation information on at least one resource unit (RU) for the first data field and the third data field,
• wherein the second signal field includes second identification information on at least one STA allocated to the second data field and the fourth data field,
• wherein the second signal further includes second allocation information on at least one RU for the second data field and the fourth data field,
• wherein the PPDU includes a third signal field used for the third frequency band, and the first identification information and the first allocation information are included in the third signal field, and
• wherein the PPDU includes a fourth signal field used for the fourth frequency band, and the second identification information and the second allocation information are included in the fourth signal field.

An apparatus in a wireless local area network (WLAN) system, the apparatus comprising:

• a radio frequency (RF) unit for receiving a radio signal;
• and
• a processor operatively coupled to the RF unit,
• wherein the processor is configured to:
• instruct the RF unit to receive a physical layer protocol data unit (PPDU) including a first, a second, a third and a fourth data field used for a first, a second, a third and a fourth frequency band, respectively;
• and
• decode the PPDU,
• wherein the PPDU includes a first signal field used for the first frequency band and a second signal field used for the second frequency band,
• wherein the first signal field includes first identification information on at least one station (STA) allocated to the first data field and the third data field,
• wherein the first signal field further includes first allocation information on at least one resource unit (RU) for the first data field and the third data field,
• wherein the second signal field includes second identification information on at least one STA allocated to the second data field and the fourth data field,
• wherein the second signal further includes second allocation information on at least one RU for the second data field and the fourth data field,
• wherein the PPDU includes a third signal field used for the third frequency band, and the first identification information and the first allocation information are included in the third signal field, and
• wherein the PPDU includes a fourth signal field used for the fourth frequency band, and the second identification information and the second allocation information are included in the fourth signal field.