Why is synchronization of AP?s and BH masters required?

Why is synchronization of AP?s and BH masters required?

Canopy radios use time division duplexing (TDD) on the outbound transmission and time division multiple access (TDMA) on the inbound frame. Canopy radios transmit and receive but not all at the same time. If one AP were to transmit while another is receiving the possibility for interference or de-sensing exists. AP's and BH masters must be synchronized to prevent interference and de-sensing.