Method and apparatus for transmitting and receiving data on basis of tone plan in wireless lan system

An access point (AP) for transmitting a physical protocol data unit (PPDU) in a wireless local area network (WLAN) system, the AP comprising:

• a memory;
• a transceiver;
• and
• a processor operatively connected with the memory and the transceiver,
• wherein the processor is configured to:
• generate a PPDU and transmit the PPDU to a station (STA);
• wherein:
• the PPDU comprises an extremely high throughput (EHT)-LTF and a data field;
• the data field comprises a pilot tone;
• the pilot tone is configured based on resource unit (RU) information about a broadband;
• when the broadband comprises four 996-tone RUs based on the RU information, an index for the pilot tone is set to ±{24, 92, 158, 226, 266, 334, 400, 468, 562, 630, 696, 764, 804, 872, 938, 1006, 1048, 1116, 1182, 1250, 1290, 1358, 1424, 1492, 1586, 1654, 1720, 1788, 1828, 1896, 1962, 2030};
• when the broadband comprises two 2020-tone RUs based on the RU information, an index for the pilot tone is set to ±{24, 92, 158, 226, 266, 334, 400, 468, 562, 630, 696, 764, 804, 872, 938, 1006, 1048, 1116, 1182, 1250, 1290, 1358, 1424, 1492, 1586, 1654, 1720, 1788, 1828, 1896, 1962, 2030};
• and
• when the broadband is defined as only a single full bandwidth based on the RU information, an index for the pilot tone is set to ±{24, 158, 266, 400, 562, 696, 804, 938, 1048, 1182, 1290, 1424, 1586, 1720, 1828, 1962}.

A method for receiving a physical protocol data unit (PPDU) in a wireless local area network (WLAN) system, the method comprising:

• receiving, by a station (STA), a PPDU from an access point (AP);
• and
• decoding, by the STA, the PPDU,
• wherein:
• the PPDU comprises an extremely high throughput (EHT)-LTF and a data field;
• the data field comprises a pilot tone;
• the pilot tone is configured based on resource unit (RU) information about a broadband;
• when the broadband comprises four 996-tone RUs based on the RU information, an index for the pilot tone is set to ±{24, 92, 158, 226, 266, 334, 400, 468, 562, 630, 696, 764, 804, 872, 938, 1006, 1048, 1116, 1182, 1250, 1290, 1358, 1424, 1492, 1586, 1654, 1720, 1788, 1828, 1896, 1962, 2030};
• when the broadband comprises two 2020-tone RUs based on the RU information, an index for the pilot tone is set to ±{24, 92, 158, 226, 266, 334, 400, 468, 562, 630, 696, 764, 804, 872, 938, 1006, 1048, 1116, 1182, 1250, 1290, 1358, 1424, 1492, 1586, 1654, 1720, 1788, 1828, 1896, 1962, 2030};
• and
• when the broadband is defined as only a single full bandwidth based on the RU information, an index for the pilot tone is set to ±{24, 158, 266, 400, 562, 696, 804, 938, 1048, 1182, 1290, 1424, 1586, 1720, 1828, 1962}.