Disclosed is a method for communicating in a wireless LAN system performed by a first wireless terminal, the method including: generating a wake-up packet modulated by an On-Off Keying (OOK) technique wherein the wake-up packet comprises a plurality of identification information for a plurality of second wireless terminals, each of the plurality of identification information is generated based on a bit length unit having a fixed size, and the bit length unit having the fixed size is set to 12 bits; and transmitting the wakeup packet to the plurality of second wireless terminals.