This disclosure describes systems, methods, and devices related to deterministic backoffs and collision avoidance. A device may identify a first transmission received from a first device, wherein the first transmission is over a shared access medium. The device may identify a second transmission received from the first device, wherein the second transmission is over the shared access medium. The device may determine an available transmission slot between the first transmission and the second transmission. The device may transmit, during the available transmission slot, a third transmission.