| 主权项 |
1. A method, comprising:
selecting, for a first group of devices having a first group size of a plurality of potential group sizes, a set of block allocations from a codebook, the codebook having respective sets of block allocations corresponding to each of the plurality of potential group sizes, wherein the selected set of block allocations is selected to correspond to the first group size; selecting a block allocation for the first group of devices from the selected set of block allocations, the selected block allocation indicating a respective set of orthogonal frequency division multiplexing (OFDM) tone blocks to be assigned to each device of the first group of devices, each set of OFDM tone blocks indicating a respective integer number of different OFDM tone blocks of a wireless local area network (WLAN) communication channel; assigning, to each device of the first group of devices, the corresponding integer number of different OFDM tone blocks of the selected block allocation, wherein the selected block allocation includes at least i) a first set of OFDM tone blocks assigned to a first device of the first group of devices and ii) a second set of OFDM tone blocks assigned to a second device of the first group of devices; and generating an orthogonal frequency division multiple access (OFDMA) data unit to be transmitted to the first group of devices via the WLAN communication channel using the assigned set of OFDM tone blocks, the OFDMA data unit including a preamble portion and a data portion, the preamble portion having an index to the codebook that indicates i) the first group size, and ii) the selected block allocation. |
