Tone block allocation for orthogonal frequency division multiple access data unit

摘要

A method for transmitting a first field and one or more second fields is described. A number of devices in a group of multiple devices to which a first OFDMA data unit is to be transmitted is selected. A block allocation that indicates respective integer numbers of different tone blocks of a WLAN communication channel to be assigned to each device in the group of multiple devices is selected. A first field is encoded to indicate both the selected number of devices in the group and the selected block allocation. One or more second fields are encoded to indicate a respective device identifier for each device in the group of multiple devices. The first field and the one or more second fields are transmitted to each device in the group of multiple devices.

主权项

1. A method, comprising:
selecting a number of devices in a group of multiple devices to which an orthogonal frequency division multiple access (OFDMA) data unit is to be transmitted; selecting a block allocation that indicates respective integer numbers of different tone blocks of a wireless local area network (WLAN) communication channel to be assigned to each device in the group of multiple devices; determining a single index to a codebook, and including an indicator of the single index in a first field of a signal field of the OFDMA data unit, wherein the indicator of the single index specifies a single entry in the codebook that indicates both (i) the selected block allocation of each device in the group of multiple devices and (ii) a number of sub-fields in a plurality of subfields in a second field of the signal field; encoding the plurality of sub-fields in the second field of the signal field of the OFDMA data unit to indicate a respective device identifier for each device in the group of multiple devices; and transmitting the OFDMA data unit to each device in the group of multiple devices.