embodiments of a system for station group management and a method for managing station - management groups in a wireless network are generally described herein . in some embodiments , a system element , such as an access point , may establish a station - management group including selected stations , transmit a unicast group allocation message to a station to indicate whether the station is part of the station management group , transmit data frames to the station in a downlink multi - user multiple - input multiple - output transmission , and delete the station from the station - management group .