Collision mitigation for directional response in millimeter wave wireless local area network system

A wireless transmit receive unit (WTRU) apparatus for beamforming training, the apparatus comprising:

• a processor,
• a receiver operatively connected to the processor, the receiver and processor configure to receive an indication, from an access point or a personal basic service set control point (AP/PCP), within a beacon frame during a beamforming training allocation, of a number of space time slots (STSs) for a specific sector of the AP/PCP;
• a transmitter operatively coupled to the processor, the transmitter and processor configure to send a signal via a sector corresponding to the specific sector of the AP/PCP, in one or more randomly selected STSs from the number of STSs ;
• and
• the receiver and processor further configure to receive an acknowledgement (ACK) confirming the signal was received by the AP/PCP.