An extreme-high-throughput (EHT) physical-layer protocol data unit (PPDU) is signaled between a first station (STA) and a second STA to indicate a resource unit (RU) allocation with respect to multiple users. One or more RU allocated to the first STA or the second STA as indicated in the EHT PPDU can be determined by using a RU allocation table that includes, in addition to entries corresponding to RUs allocatable to a plurality of users, one or more empty RU entries corresponding to one or more of an empty 242-tone RU, an empty 484-tone RU and an empty 996-tone RU.