Physical layer frame format for WLAN

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12237920
APP PUB NO 20230421295A1
SERIAL NO

18244792

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Importance

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Abstract

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A preamble of physical layer (PHY) data unit includes a first legacy portion and a first non-legacy portion that follows the first legacy portion. The first non-legacy portion includes i) a first orthogonal frequency division multiplexing (OFDM) symbol that immediately follows the first legacy portion and that is modulated using binary phase shift keying (BPSK), and ii) a second OFDM symbol that immediately follows the first OFDM symbol and that is modulated using BPSK modulation rotated by 90 degrees (Q-BPSK). The modulation of the first and second OFDM symbols indicates to a receiver device that conforms to a first communication protocol that the data unit conforms to the first communication protocol. The first OFDM symbol being modulated using BPSK modulation causes a receiver device that conforms to a second communication protocol to determine that the PHY data unit conforms to a third communication protocol.

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Patent Owner(s)

  • RAKUTEN GROUP, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Banerjea, Raja Sunnyvale, US 230 6791
Lou, Hui-Ling Sunnyvale, US 675 8407
Nabar, Rohit U Sunnyvale, US 249 5173
Srinivasa, Sudhir Los Gatos, US 239 3942
Yu, Mao San Jose, US 50 968
Zhang, Hongyuan Fremont, US 1006 15109

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