A receiving device in a wireless local area network, WLAN, system using a frequency band including at least one resource unit, RU, the device 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 for: receiving a physical layer protocol data unit, PPDU, generated for a plurality of receiving devices, the PPDU including a first control field , a second control field , and a data field through the frequency band; and processing the PPDU, wherein the first control field includes control information required to interpret the PPDU, wherein the first control field includes a control identifier including information on whether a single resource unit, RU, for a full bandwidth of the frequency band is allocated, wherein the control identifier is a 1-bit identifier, wherein the second control field includes identification information for the plurality of receiving devices, and wherein the second control field includes allocation information for the at least one RU based on the control identifier not including information on allocation of a single RU for the full bandwidth, wherein the second control field does not include the allocation information for the at least one RU based on the control identifier including information on allocation of a single RU for the full bandwidth, wherein the first control field is a high efficiency signal A, HE SIG-A, field, the second control field is a high efficiency signal B, HE SIG-B, field, and the PPDU is a high efficiency PPDU, HE PPDU. a radio frequency, RF, unit for receiving a radio signal; and a processor operatively coupled to the RF unit , wherein the processor is configured for: receiving a physical layer protocol data unit, PPDU, generated for a plurality of receiving devices, the PPDU including a first control field , a second control field , and a data field through the frequency band; and processing the PPDU, receiving a physical layer protocol data unit, PPDU, generated for a plurality of receiving devices, the PPDU including a first control field , a second control field , and a data field through the frequency band; and processing the PPDU, wherein the first control field includes control information required to interpret the PPDU, wherein the first control field includes a control identifier including information on whether a single resource unit, RU, for a full bandwidth of the frequency band is allocated, wherein the control identifier is a 1-bit identifier, wherein the second control field includes identification information for the plurality of receiving devices, and wherein the second control field includes allocation information for the at least one RU based on the control identifier not including information on allocation of a single RU for the full bandwidth, wherein the second control field does not include the allocation information for the at least one RU based on the control identifier including information on allocation of a single RU for the full bandwidth, wherein the first control field is a high efficiency signal A, HE SIG-A, field, the second control field is a high efficiency signal B, HE SIG-B, field, and the PPDU is a high efficiency PPDU, HE PPDU. <EOS>