Allocating resource units for multi-user transmissions in wide bandwidths

A communication device configured to operate according to a communication protocol that defines a first set of frequency resource units (RUs) of different bandwidths for use with communication channels spanning at most 160 MHz and a second set of frequency RUs for use with communication channels spanning more than 160 MHz, wherein the first set of frequency RUs includes at least a first subset of frequency RUs having a first bandwidth and a second subset of RUs having a second bandwidth greater than the first bandwidth, and wherein the second set of frequency RUs omits at least some of the frequency RUs in the first subset of frequency RUs of the first set of frequency RUs, the communication device comprising:

• a wireless network interface device having one or more integrated circuit (IC) devices configured to:
• determine that a communication channel to be used for a multi-user (MU) transmission spans a frequency bandwidth greater than 160 MHz, and
• allocate one or more frequency RUs for the MU transmission, including:
• in response to determining that the communication channel spans the frequency bandwidth greater than 160 MHz, selecting one or more frequency RUs from the second set of frequency RUs;
• wherein the one or more IC devices are further configured to:
• generate allocation information that indicates the allocation of the one or more frequency RUs for the MU transmission, and
• control the wireless network interface device to transmit the allocation information to one or more other communication devices in connection with the MU transmission.