Wireless communication method and wireless communication terminal using same

A wireless communication terminal comprising:

• a transceiver;
• and
• a processor,
• wherein the processor is configured to:
• receive, through the transceiver, a first preamble of a wireless packet,
• receive, through the transceiver, a second preamble of the wireless packet according to an identified configuration of the second preamble,
• wherein the configuration of the second preamble is identified based at least in part on a detected constellation of a specific symbol of the second preamble,
• wherein when the detected constellation of the specific symbol is a first constellation, the second preamble includes an HE-SIG-A field composed of four symbols, and
• wherein when the detected constellation of the specific symbol is a second constellation, the second preamble includes an HE-SIG-B field.

A wireless communication method of a terminal, the method comprising:

• receiving a first preamble of a wireless packet;
• and
• receiving a second preamble of the wireless packet according to an identified configuration of the second preamble,
• wherein the configuration of the second preamble is identified based at least in part on a detected constellation of a specific symbol of the second preamble,
• wherein when the detected constellation of the specific symbol is a first constellation, the second preamble includes an HE-SIG-A field composed of four symbols, and
• wherein when the detected constellation of the specific symbol is a second constellation, the second preamble includes an HE-SIG-B field.