Multi-beam lbt for nr-u at 60 ghz

A wireless communication system, comprising:

• a transmitter configured to transmit multiple beams in multiple beam directions during a first channel occupancy time (COT), each beam of the multiple beams being oriented in a direction that is different from a direction of each other beam of the multiple beams, the transmitter being further configured to:
• based on a determination that a transmission gap between successive transmissions of the multiple beams is greater than a threshold value, perform during the transmission gap a clear channel assessment (CCA) on the multiple beams;
• and
• based on a determination from the CCA that at least one beam of the multiple beams is busy, stop transmission of the multiple beams and repeat the CCA on the multiple beams during a second COT after the first COT.

A method for accessing a wireless medium, the method comprising:

• transmitting multiple beams in multiple beam directions during a first channel occupancy time (COT), each beam of the multiple beams being oriented in a direction that is different from a direction of each other beam of the multiple beams;
• based on determining that a transmission gap between successive transmissions of the multiple beams is greater than a threshold value, performing during the transmission gap a clear channel assessment (CCA) on the multiple beams;
• and
• based on determining from the CCA that at least one beam of the multiple beams is busy, stopping transmission of the multiple beams and repeating the CCA on the multiple beams during a second COT after the first COT.