Configuration of data unit for duplicate transmission

A station (STA) in a wireless local area network (LAN) system, the STA comprising:

• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, based on being executed by the at least one processor, perform operations comprising:
• generating an extremely high throughput (EHT) physical protocol data unit (PPDU) based on a duplicate transmission mode,
• wherein the EHT PPDU includes a universal signal (U-SIG) field for interpreting the EHT PPDU, an EHT signal (EHT-SIG) field being contiguous to the U-SIG field, a short training field (STF) being contiguous to the EHT-SIG field, a long training field (LTF) being contiguous to the STF, and a data field being contiguous to the LTF;
• wherein the U-SIG field has a length of 2 symbols,
• wherein the U-SIG field includes a type field having a length of 2 bits, and a value of the type field is related to the duplicate transmission mode,
• wherein the EHT PPDU is an 80 MHZ EHT PPDU, the U-SIG field is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU, and the EHT-SIG field includes a content channel which is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU,
• wherein the data field includes a first 484-tone resource unit (RU) and a second 484-tone RU, and the first 484-tone RU is duplicated to the second 484-tone RU,
• wherein the STF is configured based on an STF sequence defined for 80 MHz transmission, and
• wherein the LTF is configured based on an LTF sequence defined for 80 MHz transmission;
• and
• transmitting the EHT PPDU.

A station (STA) in a wireless local area network (LAN) system, the STA comprising:

• at least one processor;
• and
• at least one computer memory operably connectable 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) based on a duplicate transmission mode,
• wherein the EHT PPDU includes a universal signal (U-SIG) field for interpreting the EHT PPDU, an EHT signal (EHT-SIG) field being contiguous to the U-SIG field, a short training field (STF) being contiguous to the EHT-SIG field, a long training field (LTF) being contiguous to the STF, and a data field being contiguous to the LTF;
• wherein the U-SIG field has a length of 2 symbols,
• wherein the U-SIG field includes a type field having a length of 2 bits, and a value of the type field is related to the duplicate transmission mode,
• wherein the EHT PPDU is an 80 MHZ EHT PPDU, the U-SIG field is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU, and the EHT-SIG field includes a content channel which is duplicated over each 20 MHz subchannel in the 80 MHz EHT PPDU,
• wherein the data field includes a first 484-tone resource unit (RU) and a second 484-tone RU, and the first 484-tone RU is duplicated to the second 484-tone RU,
• wherein the STF is configured based on an STF sequence defined for 80 MHz transmission, and
• wherein the LTF is configured based on an LTF sequence defined for 80 MHz transmission.