Methods and systems for simultaneous transmission between a transmitter and a plurality of receivers. The transmitter receives information identifying respective preferred transmission sectors for transmission from the transmitter to each receiver. The transmitter transmits a first multi-user simultaneous transmission to a first set of two or more receivers. The first set of receivers is selected for the first set by identifying that the preferred transmission sectors for transmission to the first set of receivers are included in a first virtual grouping of two or more transmission sectors. The two or more transmission sectors belonging to the first virtual grouping are defined by the transmitter.