Apparatus and method used in WLANs

A non-transitory computer readable storage medium storing instructions thereon, the instructions, when executed by one or more processors, cause the one or more processors to:

• generate an Extremely High Throughput (EHT) Physical Protocol Data Unit (PPDU);
• and
• provide the EHT PPDU to a Radio Frequency (RF) interface for transmitting on a transmission bandwidth, wherein
• any of distributed Resource Units (dRUs) for transmitting a data portion of the EHT PPDU is associated with a whole or part of an EHT-Short Training Field (STF) sequence constituting the EHT PPDU,
• any of the dRUs is a resource unit, subcarriers of which are distributed across one or more frequency sub-blocks within a transmission bandwidth for transmitting the EHT PPDU, and
• when the transmission bandwidth for transmitting the EHT PPDU is 80 MHz and preamble puncturing is applied, any of the dRUs is associated with an EHT-STF sequence segment, a subcarrier location of which is overlapped with that of the dRU within the transmission bandwidth for transmitting the EHT PPDU, of the EHT-STF sequence, and a transmission bandwidth for transmitting the EHT-STF sequence segment is a 20 MHz or 40 MHz.

A method, comprising:

• generating an Extremely High Throughput (EHT) Physical Protocol Data Unit (PPDU);
• and
• transmitting the EHT PPDU on a transmission bandwidth, wherein
• any of distributed Resource Units (dRUs) for transmitting a data portion of the EHT PPDU is associated with a whole or part of an EHT-Short Training Field (STF) sequence constituting the EHT PPDU,
• any of the dRUs is a resource unit, subcarriers of which are distributed across one or more frequency sub-blocks within a transmission bandwidth for transmitting the EHT PPDU, and
• any of the dRUs is associated with an EHT-Long Training Field (LTF) sequence constituting the EHT PPDU, the EHT-LTF sequence is a 4× EHT-LTF sequence, and an EHT-LTF sequence segment associated with any of the dRUs is generated by sampling the EHT-LTF sequence with subcarrier indices of the dRU.