SUB-FRAME SYNCHRONIZED RESIDUAL RADAR
First Claim
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1. A method of using a wireless communication system to determine locations, the method comprising:
- exchanging communication frames between at least two synchronized nodes in the communication system, wherein each communication frame includes at least one of data signals and radar signals;
determining distances of at least one of nodes and reflective sources based in least in part on at least one of direct and reflected radar signals; and
determining locations of at least one of the nodes and the reflective sources based on the determined distances.
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Abstract
A method of using a wireless communication system to determine locations is provided. The method including exchanging communication frames between at least two synchronized nodes in the communication system, wherein each communication frame includes at least one of data signals and radar signals. Determining distances of at least one of nodes and reflective sources based in least in part on at least one of direct and reflected radar signals and determining locations of at least one of the nodes and the reflective sources based on the determined distances.
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20 Claims
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1. A method of using a wireless communication system to determine locations, the method comprising:
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exchanging communication frames between at least two synchronized nodes in the communication system, wherein each communication frame includes at least one of data signals and radar signals; determining distances of at least one of nodes and reflective sources based in least in part on at least one of direct and reflected radar signals; and determining locations of at least one of the nodes and the reflective sources based on the determined distances. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of determining a location for at least one reflective source, the method comprising:
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establishing communications between a plurality of nodes with an initial communication frame from an initial transmitting node that includes a frame preamble, wherein the frame preamble is used by each of the plurality of nodes to synchronize a respective local clock; exchanging at least one schedule between the plurality of nodes; exchanging at least one of subsequent data communications between the plurality of nodes in communication sub-frames without an additional preamble according to the exchanged schedule; transmitting at least one range pulses according to the schedule; determining time of flight (ToF) of one or more received range pulses, wherein at least one of the range pulses is reflected off at least one reflective source; determining distances based on the determined ToFs; exchanging distance determinations between nodes in the subsequent data communications; and determining the location of the at least one reflective source in relation to the plurality of nodes based on the determined distances. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A communication and location determining system, the system comprising:
a plurality of nodes, each node configured to be synchronized with a frame preamble in an initial communication frame exchanged between the nodes, each node further configured to communicate between the nodes for a period of time without any additional preambles, each node further configured to determine distances to other nodes and reflective sources based on time of flight of direct and reflected ranging signals, each node further configured to determine locations of other nodes and reflective sources using the determined distances to the other nodes and reflective sources - View Dependent Claims (19, 20)
Specification