CPC H04B 1/7176 (2013.01) [H04B 1/7183 (2013.01)] | 19 Claims |
1. An Ultra Wide Band (UWB) ranging method comprising a ranging communication with a plurality of responder devices, the ranging communication comprising:
transmitting, by an initiator device, a polling signal in a time slot;
receiving a respective response from each of the plurality of responder devices,
overlapping and in a next time slot, each response comprising:
a preamble comprising synchronization bits,
a start of frame delimiter (SFD),
and a scrambled time-stamp sequence (STS);
wherein the STS comprises a sequence of segments each preceded by a respective guard interval,
wherein a specific segment of the sequence of segments comprises data derived from a ranging key and a responder-identifier unique to each responder of the plurality of responder devices,
wherein a sequence-number of the specific segment is unique to the respective response, and
wherein a remainder of the sequence of segments each comprise identical data.
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