Signaling for data duplication transmission

A station (STA) comprising:

• at least one processor;
• and
• at least one computer memory operatively connected to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
• receiving an Extremely High Throughput (EHT) physical protocol data unit (PPDU) including a legacy signal (L-SIG) field, a repeated L-SIG (RL-SIG) field being contiguous to the L-SIG field, a first signal (SIG) field being contiguous to the RL-SIG field, a second SIG field being contiguous to the first SIG field, and a data field,
• wherein a length field in the L-SIG field is set to a value satisfying a condition a remainder is zero when the length field is divided by three, wherein the remainder is used to differentiate the EHT PPDU from a High Efficiency (HE) PPDU,
• wherein the four extra subcarriers are inserted at indexes of {−28, −27, 27, 28} in the RL-SIG field, and values on the four extra subcarriers are {−1, −1, −1, 1}, respectively,
• wherein the first SIG field comprises version independent fields including bits related to transmission opportunity (TXOP) and bits related to a Basic Service Set (BSS) Color,
• wherein the second SIG field comprises resource unit (RU) allocation information related to a multiple RU (MRU) in which a first RU is allocated contiguous to a second RU in frequency,
• wherein the data field is encoded based on the MRU;
• and
• interpreting the EHT PPDU based on the first SIG field and the second SIG field.