Method and device for allocating resource units using leftover tones in wireless LAN
摘要
說(shuō)明書(shū)
The inverse fast fourier transform (IFFT) size being applied to the HE-STF 1550 and the field after the HE-STF 1550 may be different from the IFFT size being applied to the field before the HE-STF 1550. For example, the IFFT size being applied to the HE-STF 1550 and the field after the HE-STF 1550 may be 4 times larger than the IFFT size being applied to the field before the HE-STF 1550. In case the STA may receive the HE-SIG A 1530 and may receive indication to receive a downlink PPDU based on the HE-SIG A 1530. In this case, the STA may perform decoding based on the HE-STF 1550 and the FFT size that is changed starting from the field after the HE-STF 1550. Conversely, in case the STA fails to receive indication to receive the downlink PPDU based on the HE-SIG A 1530, the STA may stop the decoding process and may perform network allocation vector (NAV) configuration. A cyclic prefix (CP) of the HE-STF 1550 may have a size that is larger than the CP of other fields, and, during such CP period, the STA may change the FFT size and may perform decoding on the downlink PPDU.
The access point (AP) may allocate each of the plurality of the resource units to each of the plurality of stations (STAs) within the entire bandwidth and may transmit individual data fields (or frames), which correspond to each of the plurality of STAs, to each of the plurality of STAs through each of the plurality of resource units. As described above, the information on the allocation of each of the plurality of resource units to each of the plurality of STAs may be included in the HE-SIG A 1550 or the HE-SIG B 1560.
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