Coordinated multi-user transmissions with multiple access points

A first access point (AP) associated with one or more first client stations, the first AP comprising:

• a wireless network interface device comprising one or more integrated circuit (IC) devices configured to:
• generate an announcement frame that announces a coordinated multi-user (MU) transmission involving multiple APs including the first AP and one or more second APs, each of the second APs associated with a respective one or more second client stations, wherein the announcement frame is generated to indicate respective one or more frequency resource units (RUs) allocated to the one or more second APs for the coordinated MU transmission,
• control the wireless network interface device to transmit the announcement frame to the one or more second APs to initiate the coordinated MU transmission, and
• control the wireless network interface device to participate in the coordinated MU transmission while the one or more second APs also participate in the coordinated MU transmission.