Patent ID: 10469230

Abstract:
A method for transmitting a PPDU of an STA device, including generating an HE-STF sequence, generating a PPDU configured on the basis of the HE-STF sequence and including an HE-STF field having periodicity of 1.6 μs, and transmitting the PPDU such that the HE-STF field included in the PPDU is transmitted via a channel, wherein the HE-STF sequence is configured on the basis of an M sequence, and when the channel is a 20 MHz channel, the HE-STF sequence may be configured to have a structure of {the M Sequence, 07, 0, 0, 0, 0, 0, 0, the M sequence}, when the channel is a 40 MHz channel, the HE-STF sequence may be configured on the basis of a structure in which the HE-STF sequence of the 20 MHz channel is duplicated twice and frequency-shifted, and when the channel is a 80 MHz channel, the HE-STF sequence may be configured on the basis of a structure in which the HE-STF sequence of the 40 MHz channel is duplicated twice and frequency-shifted.