Systems and methods for data transmission within the ultra-wideband ranging protocol include a first UWB device which determines a transmission block comprising a plurality of rounds each representing a period of time. The first UWB device performs a first wireless communication to perform ranging between the first UWB device and a second UWB device, within a first round of the plurality of rounds. The first UWB device may perform a second wireless communication to communicate data between the first UWB device and the second UWB device, which may be within the first round or a second round.