CPC H04L 27/26132 (2021.01) [H04L 5/0048 (2013.01); H04L 5/0053 (2013.01); H04L 27/2603 (2021.01); H04W 84/12 (2013.01)] | 12 Claims |
1. A method performed by a station (STA) in a wireless local area network system, the method comprising:
receiving a physical protocol data unit (PPDU) comprising a legacy-signal (L-SIG) field;
determining whether the PPDU comprises a repeated L-SIG (RL-SIG) field which is a repeat of the L-SIG field, wherein the RL-SIG is contiguous to the L-SIG field; and
after determining that the PPDU comprises the RL-SIG field, determining whether a length field included in the L-SIG field is set to a value satisfying a condition that a remainder is zero when a value of the length field is divided by three (3), wherein the remainder is used to differentiate an extreme high throughput (EHT) PPDU from a high efficiency (HE) PPDU,
wherein the PPDU is determined as the EHT PPDU based on the remainder having a value of zero (0), and the PPDU is determined as the HE PPDU based on the remainder having a non-zero value.
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