CPC H04L 1/0079 (2013.01) [H04L 5/0046 (2013.01); H04L 5/0048 (2013.01); H04L 5/0053 (2013.01); H04L 5/0092 (2013.01); H04L 27/18 (2013.01); H04L 27/2602 (2013.01); H04L 27/2603 (2021.01); H04L 27/2613 (2013.01); H04L 69/18 (2013.01); H04L 69/323 (2013.01); H04L 1/08 (2013.01); H04L 27/26025 (2021.01); H04L 27/26132 (2021.01); H04L 27/26136 (2021.01); H04W 80/045 (2013.01); H04W 84/12 (2013.01)] | 8 Claims |
1. A wireless communication terminal that communicates wirelessly, the wireless communication terminal comprising:
a transceiver; and
a processor,
wherein the processor is configured to:
receive a non-legacy physical layer frame by using the transceiver,
obtain a legacy signaling field including information decodable by a legacy wireless communication terminal from the non-legacy physical layer frame,
obtain length information indicating information on a duration of the non-legacy physical layer frame, from the legacy signaling field,
obtain information other than information on the duration of the non-legacy physical layer frame based on a modulation method of a third symbol after the legacy signaling field and a remaining value obtained by dividing the length information by a data size transmittable by one symbol of a legacy physical layer frame, wherein the modulation method is Binary Phase Shift Keying (BPSK) or Quadrature Binary Phase Shift Keying (QBPSK), wherein the information other than information on the duration of the non-legacy physical layer frame indicates a format of a non-legacy signaling field included in the non-legacy physical layer frame,
determine, based on the format of the non-legacy signaling field, whether the non-legacy signaling field includes a predetermined signaling field, wherein the non-legacy signaling field includes an HE-SIG-A field, wherein the predetermined signaling field is at least one of repeated HE-SIG-A field and HE-SIG-B field, and
determine a number of symbols of data of the non-legacy physical layer frame according to a following equation,
where └x┘ denotes a largest integer less than or equal to x,
L_LENGTH denotes the length information,
m denotes a value obtained by subtracting the remaining value from the data size transmittable by one symbol of the legacy physical layer frame,
Dsize denotes the data size transmittable by one symbol of the legacy physical layer frame,
bPE_Disambiguity denotes a value of PE (packet extension) Disambiguity field,
THE_PREAMBLE denotes a duration of a non-legacy preamble of the non-legacy physical layer frame,
TSYM denotes a duration of one symbol of the data of the non-legacy physical layer frame,
wherein the PE Disambiguity field is set based on the duration of one symbol of the data of the non-legacy physical layer frame and an increment of duration to set a value of the length information based on a duration of one symbol of the legacy physical layer frame.
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