Method and device for transmitting data unit
AssigneeLG Electronics Inc.
InventorsJinsoo Choi, Wookbong Lee, Hangyu Cho, Dongguk Lim, Jinyoung Chun
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Abstract
A method and a device for transmitting a data unit are disclosed. A method for transmitting a PPDU can comprise the steps of: generating, by an STA, the PPDU including a first portion and a second portion; and transmitting, by the STA, the PPDU, wherein the first portion is generated by performing IFFT according to a first FFT size, the second portion is generated by performing IFFT according to a second FFT size, and the first FFT size can differ from the second FFT size.
Claims10
A method for transmitting a physical layer protocol data unit (PPDU), the method comprising:
- generating, by a station (STA), the PPDU including a first portion and a second portion,
- wherein the first portion is used for a legacy system and includes a first short training field (STF), a first long training field (LTF), and a signal field,
- wherein the first portion is followed by the second portion in each PPDU, and
- wherein the second portion includes a second STF, a second LTF, and a data field;
- and
- transmitting, by the STA, the PPDU,
- wherein the first portion is generated by performing an inverse fast Fourier transform (IFFT) based on a first fast Fourier transform (FFT) size and a first interval between subcarriers used for the first portion,
- wherein the second portion is generated by performing an IFFT based on a second FFT size and a second interval between subcarriers for the second portion, and
- wherein the second FFT size is set to be greater than the first FFT size such that the second interval of the second portion is less than the first interval of the first portion.
A station (STA) transmitting a physical layer convergence procedure (PLCP) protocol data unit (PPDU), the STA comprising:
- a radio frequency (RF) unit configured to transmit a radio signal;
- and
- a processor operatively connected to the RF unit and configured to:
- generate the PPDU comprising a first portion and a second portion,
- wherein the first portion is used for a legacy system and includes a first short training field (STF), a first long training field (LTF), and a signal field,
- wherein the first portion is followed by the second portion in each PPDU, and
- wherein the second portion includes a second STF, a second LTF, and a data field;
- and
- control the RF unit to transmit the PPDU,
- wherein the first portion is generated by performing an inverse fast Fourier transform (IFFT) based on a first fast Fourier transform (FFT) size and a first interval between subcarriers used for the first portion,
- wherein the second portion is generated by performing an IFFT based on a second FFT size and a second interval between subcarriers for the second portion, and
- wherein the second FFT size is set to be greater than the first FFT size such that the second interval of the second portion is less than the first interval of the first portion.
Dependencies are inferred from the claim text.