Systems and technique for wireless communication are described. A describe technique includes transmitting, from a first device, a request to send (RTS) to the second devices to protect a wireless communication neighborhood of the first device and wireless communication neighborhood of the second devices for transmission of a multi-user frame; receiving clear to send (CTS) responses from the second devices; determining a bandwidth width for the multi-user frame based on a bandwidth availability among the second devices as indicated by the CTS responses and bandwidth indications included in the CTS responses, the multi-user frame comprising spatially steered data frames that are respectively intended for the second devices and are in accordance with the determined bandwidth width; and transmitting the multi-user frame to the identified devices in accordance with the determined bandwidth width.