Ultra-wideband location systems and methods
AssigneeBe Spoon
InventorPhilippe Bollard
Life of this patent
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Abstract
A method includes sending, by a master beacon device and one or more beacon repeater devices, ultra-wideband (UWB) beacon frames. The UWB beacon frames are transmitted as interleaved pairs of UWB beacon frames. Each interleaved pair includes a first UWB beacon frame and a second UWB beacon frame. For each interleaved pair, the first UWB beacon frame and the second UWB beacon frame are transmitted with a master time delay. The method further includes receiving, by one or more tag devices, at least one of the interleaved pairs of UWB beacon frames.
Claims20
A real-time location method comprising:
- sending, by a master beacon device and a plurality of beacon repeater devices, ultra-wideband beacon frames, the master beacon device comprising a first housing configured to be attached stationary to a wall or ceiling, the ultra-wideband beacon frames being transmitted as interleaved pairs of ultra-wideband beacon frames, each interleaved pair being sent either from the master beacon device or the plurality of beacon repeater devices, each interleaved pair including a first ultra-wideband beacon frame and a second ultra-wideband beacon frame;
- receiving, by a tag device, at least one of the interleaved pairs of ultra-wideband beacon frames;
- and
- determining a position of the tag device by time measurements based on the ultra-wideband beacon frames received at the tag device.
A real-time location method comprising:
- sending, by a master beacon device and a plurality of beacon repeater devices, ultra-wideband beacon frames, the ultra-wideband beacon frames being transmitted as interleaved pairs of ultra-wideband beacon frames, each interleaved pair being sent either from the master beacon device or the plurality of beacon repeater devices, each interleaved pair including a first ultra-wideband beacon frame and a second ultra-wideband beacon frame, the first ultra-wideband beacon frame and the second ultra-wideband beacon frame each including a synchronization header, a physical layer header, or a physical layer payload;
- receiving, by a tag device, at least one of the interleaved pairs of ultra-wideband beacon frames;
- and
- determining a position of the tag device by time measurements based on the ultra-wideband beacon frames received at the tag device.
A real-time location method comprising:
- sending, by a master beacon device and a plurality of beacon repeater devices, ultra-wideband beacon frames, the ultra-wideband beacon frames being transmitted as interleaved pairs of ultra-wideband beacon frames, each interleaved pair being sent either from the master beacon device or the plurality of beacon repeater devices, each interleaved pair including a first ultra-wideband beacon frame and a second ultra-wideband beacon frame;
- receiving, by a tag device, at least one of the interleaved pairs of ultra-wideband beacon frames,
- wherein sending and receiving are performed using an exchange protocol that defines a location rate frame format comprising:
- a beacon section comprising a series of time slots, wherein the time slots are respectively associated to one of the first ultra-wideband beacon frame and the second ultra-wideband beacon frame of an interleaved pair;
- and
- a transition slot following the beacon section;
- and
- determining a position of the tag device by time measurements based on the ultra-wideband beacon frames received at the tag device.
Dependencies are inferred from the claim text.