Method for configuring signal field in wireless communication system

A method, comprising:

• receiving a physical protocol data unit (PPDU) including a legacy signal (L-SIG) field, a repeated L-SIG (RL-SIG) field, a first SIG field which is contiguous to the RL-SIG field, and a second SIG field which is contiguous to the first SIG field;
• wherein the L-SIG field includes a length field which is set to a value satisfying a condition that a remainder is zero when the length field is divided by three (3), and the remainder is used to differentiate the PPDU from a High Efficiency (HE) PPDU,
• wherein the first SIG field includes first information related to a PPDU type,
• wherein the first SIG field further includes second information related to an identifier of a basic service set (BSS), third information indicating duration information related to a transmission opportunity (TXOP), fourth information related to whether the PPDU is sent in uplink (UL) or in downlink (DL), and fifth information related to a bandwidth,
• wherein the second SIG field includes a first Signal Content Channel (SIG-CC) and a second SIG-CC,
• wherein the EHT PPDU includes a first 80 MHz frequency subblock and a second 80MHz frequency subblock being contiguous to the first 80 MHz frequency subblock,
• wherein the first 80 MHz frequency subblock includes the first SIG-CC, the second SIG-CC which is contiguous to the first SIG-CC, a duplication of the first SIG-CC which is contiguous to the second SIG-CC, and a duplication of the second SIG-CC which is contiguous to the duplication of the first SIG-CC,
• wherein information carried in the first 80 MHz frequency subblock is different from information carried in the second 80 MHz frequency subblock;
• and
• decoding the PPDU based on the first SIG field and the second SIG field.

A station, 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 a physical protocol data unit (PPDU) including a legacy signal (L-SIG) field, a repeated L-SIG (RL-SIG) field, a first SIG field which is contiguous to the RL-SIG field, and a second SIG field which is contiguous to the first SIG field;
• wherein the L-SIG field includes a length field which is set to a value satisfying a condition that a remainder is zero when the length field is divided by three (3), and the remainder is used to differentiate the PPDU from a High Efficiency (HE) PPDU,
• wherein the first SIG field includes first information related to a PPDU type,
• wherein the first SIG field further includes second information related to an identifier of a basic service set (BSS), third information indicating duration information related to a transmission opportunity (TXOP), fourth information related to whether the PPDU is sent in uplink (UL) or in downlink (DL), and fifth information related to a bandwidth,
• wherein the second SIG field includes a first Signal Content Channel (SIG-CC) and a second SIG-CC,
• wherein the EHT PPDU includes a first 80 MHz frequency subblock and a second 80 MHz frequency subblock being contiguous to the first 80 MHz frequency subblock,
• wherein the first 80 MHz frequency subblock includes the first SIG-CC, the second SIG-CC which is contiguous to the first SIG-CC, a duplication of the first SIG-CC which is contiguous to the second SIG-CC, and a duplication of the second SIG-CC which is contiguous to the duplication of the first SIG-CC,
• wherein information carried in the first 80 MHz frequency subblock is different from information carried in the second 80 MHz frequency subblock;
• and
• decoding the PPDU based on the first SIG field and the second SIG field.