A communication apparatus obtains information regarding an access category of transmission data in each of a plurality of other communication apparatuses including a first communication apparatus and a second communication apparatus, allocates wireless resources of OFDMA such that a transmission opportunity of the first communication apparatus does not precede a transmission opportunity of the second communication apparatus that has transmission data of a higher-priority access category than an access category of transmission data in the first communication apparatus, and receives a signal that has been transmitted using OFDMA in accordance with allocation of wireless resources and that conforms to an IEEE802.11 series standard.