Select IEEE 802.11be MxN from the Quick Setups node.
Set Compress Mode to Off.
Configure the allocation index for each 20-MHz subband. The EHT MU PPDU may consist of more than one resource unit (RU) or multiple resource unit (MRU).
For example, the 1st Band Allocation Index “011101010” represents an MRU of 996-996-484-[]-996. [] indicates one or multiple RU/MRUs that are not overlapped with the RU or MRU, indicated by the 9-bit RU allocation subfield. For more details about the 9-bit RU allocation index, refer to Table 36-35—RU Allocation subfield of specification IEEE P802.11be/D1.0.
Large size (≥ 242 subcarriers) RU/MRU can support multiple users, which require Number of Transmit Chains (Ntx) > 1. If signaling RUs or MRUs of sizes greater than or equal to 242 subcarriers, the last three bits y2y1y0 = 000–111 indicate the number of users in that RU/MRU.
For multiple users transmitting on large size (≥ 242 subcarriers) RU/MRU in an OFDMA transmission, the dynamic split of user fields between EHT-SIG content channel 1 and EHT-SIG content channel 2 is signaled by the RU allocation subfields in each EHT-SIG content channel. The dynamic split of user fields is the same in each 80-MHz subblock if the bandwidth is greater than or equal to 160 MHz.
The following example is used to illustrate the dynamic split. There are 2 users transmitting on the 996-tone RU with bandwidth of 80 MHz, which spans 4 20-MHz subbands. Use the following RU arrangement to split the 2 user fields into content channel 1 and content channel 2, separately.
Or use the following RU arrangement to allocate all the user fields into channel 1.
For an OFDMA transmission with a bandwidth larger than 40 MHz, Punctured 242-tone RU is supported to indicate that no signal is present in that 20-MHz subchannel within the PPDU bandwidth.
For an OFDMA transmission, Unassigned 242-tone RU shall be used when the preamble portion of corresponding 20-MHz exists and when the corresponding 242-tone RU is not used for data transmission.
