Methods, systems, and apparatuses used to avoid the scheduling of devices for transmission in overlapping time slots in a mixed HFC and RFoG network. A method of scheduling the transmission of user devices on a mixed RFoG and HFC network can include determining whether a lost transmission event occurred between a first device and second device in a mixed HFC and RFoG network when the transmission of the first device and the transmission of the second device overlapped in time. If a lost transmission event occurred, a data element can be associated with the lost transmission event grouping the first device and second device into a category. The data element can be used to prevent the first device and the second device from transmitting in overlapping time slots.