A method (300) for enabling self-coexistence of devices in a flexible wireless system (200) that includes first and second wireless networks sharing a frequency band. The method includes discovering a second device operable in the second wireless network that overlaps with the first wireless network (S310); reporting the discovered second device to a first device operable in the first wireless network (S320); determining if an adjustment is needed between a first beacon period of the first device and a second beacon period of the second device (S330); and adjusting a first beacon period start time (BPST) of the first device with a second BPST of the second device (S370) if the adjustment is needed.