Method and device for transmitting wakeup packet in wireless lan system

A method and a device for transmitting a wakeup packet in a wireless LAN system are suggested. Particularly, a transmission device configures a wakeup packet and transmits same to a reception device. The wakeup packet includes a sequence including first information and second information, by applying an OOK method. The first information and the second information are configured with an on-signal and an off-signal. The on-signal is transferred via a first symbol generated by applying a first sequence to K number of successive subcarriers in the 20MHz band and performing 64-point IFFT on the subcarriers. The off-signal is transferred via a second symbol generated by applying a second sequence to the K number of successive subcarriers in the 20MHz band and performing 64-point IFFT on the subcarriers. Of the K number of subcarriers to which the first sequence is applied, a coefficient for m number of subcarriers as a unit is set to 1 or -1 for the subcarriers, and a coefficient for the remaining subcarriers is set to 0. The first information and the second information are transmitted via a third symbol configured with the first symbol and the second symbol, respectively.