METHOD AND APPARATUS FOR APPLYING OPTIMIZED PHASE ROTATION BY CONSIDERING PREAMBLE PUNCTURING IN 802.11AX AND VARIOUS RF CAPABILITIES

WIPO Patent Application WO/2020/050527

A1

A method and an apparatus for transmitting an EHT PPDU to a wireless LAN system are presented. Particularly, a transmission device generates an EHT PPDU, and transmits the EHT PPDU to a reception device through a 320MHz band of which a partial band is punctured on the basis of an RF. A legacy preamble includes an L-STF and an L-LTF. The legacy preamble is generated by applying a first phase rotation value. The first phase rotation value is determined on the basis of a first method and a second method. The first method is for acquiring an optimum PAPR in the L-LTF. The second method is for acquiring an optimum PAPR on the basis of a maximum transmission bandwidth supported by the RF. The first phase rotation value is acquired on the basis of a second phase rotation value and a third rotation value. The second phase rotation value is a phase rotation value which repeats a phase rotation value that is defined with respect to an 80MHz band in an 802.11ax system. The third phase rotation value is a phase rotation value that is defined by 80MHz band units in the 320MHz band.

PARK EUNSUNG (KR)
LIM DONGGUK (KR)
CHOI JINSOO (KR)

PCT/KR2019/010630

March 12, 2020

August 21, 2019

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LG ELECTRONICS INC (KR)

H04L27/26

US20170288745A1	2017-10-05
US20180175988A1	2018-06-21
US20170310514A1	2017-10-26

CHOI, JINSOO ET AL.: "View on EHT Objectives and Technologies", IEEE 802.11-18/ 1171R0, 9 July 2018 (2018-07-09)
NOH, YUJIN ET AL.: "Gamma Phase Rotation for HE PPDU", IEEE 802. 11-16/0903R1, 25 July 2016 (2016-07-25)

ENVISION PATENT & LAW FIRM (KR)

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