Data transmission method and apparatus in wireless communication system
AssigneeLG Electronics Inc.
InventorsJinmin KIM, Wookbong LEE, Hangyu CHO, Eunsung PARK
Life of this patent
Estimating the term…
Abstract
A data transmission method by a station (STA) apparatus of a wireless LAN system is disclosed. A data transmission method by an STA apparatus according to the present invention comprises the steps of: generating a physical protocol data unit (PPDU) including a physical preamble and a data field; determining whether to add a padding symbol to the PPDU; generating and adding the padding symbol to the PPDU if adding the padding symbol is determined; and transmitting the PPDU.
Claims8
A method for receiving, by First Station (STA), a physical protocol data unit (PPDU) in a wireless LAN(WLAN) system, the method comprising:
- transmitting a high efficiency (HE) capabilities element of the first STA, the HE capabilities element comprising transmission constellation level information of the first STA to second STA,
- wherein the transmission constellation level information and a transmission constellation level of a data field to transmit are used to determine a duration of a signal extension, and
- wherein the signal extension provides additional receiving processing time for the first STA;
- and
- receiving a physical protocol data unit (PPDU) from the second STA,
- wherein the PPDU includes the data field, the signal extension, a physical preamble including a legacy preamble part and a discrete Fourier transform/inverse discrete Fourier transform (DFT/IDFT) period of the data field being four times a DFT/IDFT period of the legacy preamble part.
A First Station (STA) device of a wireless LAN (WLAN) system, comprising:
- a radio frequency (RF) unit configured to send and receive radio signals;
- and
- a processor configured to control the RF unit,
- wherein the processor is further configured to:
- transmit a high efficiency (HE) capabilities element of the first STA, the HE capabilities element comprising transmission constellation level information of the first STA to second STA,
- wherein the transmission constellation level information and a transmission constellation level of a data field to transmit are used to determine a duration of a signal extension, and
- wherein the signal extension provides additional receiving processing time for the first STA, and
- receive a physical protocol data unit (PPDU) from the second STA,
- wherein the PPDU includes the data field, the signal extension, a physical preamble including a legacy preamble part and a discrete Fourier transform/inverse discrete Fourier transform (DFT/IDFT) period of the data field being four times a DFT/IDFT period of the legacy preamble part.
Dependencies are inferred from the claim text.