HE

Bit Number

23

Structure

• u16 data1, data2, data3, data4, data5, data6

Required Alignment

2

Unit(s)

none

The presence of this field indicates that the frame was received or transmitted using the HE PHY.

This field contains data mostly from the HE-SIG-A part that is common to all HE transmissions, but some of the data might also be calculated (e.g. when included in the transmission of an HE_TRIG type frame, some parameters are not included in the HE-SIG-A but were determined by the trigger frame).

However, for PPDUs of HE_MU format, it contains the data that applies to the encoding of the PSDU, with more detailed information about the MU transmission contained in the HE-MU field if needed, in many cases that field will not be needed as all the data about the single user that was captured is already encoded here.

In the case of MU transmissions, the HE-MU-other-user field may also be present one or more times in that case to capture extra users for which the data couldn’t be captured; if the data was captured for more than one user then multiple packets must be written into the radiotap capture.

data1

data2

RU allocation offset

The RU allocation offset is encoded as the offset (within the 80 MHz pri/sec channel) of the location in the correct tone column.

Note that while this table lists all possible positions, it doesn’t list all possible combinations, i.e. with an HE-MU transmission the RU allocation may be mixed into different bandwidths for different users.

data3

data4

data5

data 6