System and method for multi-user two-way ranging
First Claim
1. A node in a wireless network, wherein the node comprises:
- a memory configured to store a signature of the node;
a transceiver operatively coupled to the memory and configured to;
transmit, during an initial frame, the signature of the node to one or more neighboring nodes;
receive, during the initial frame, a first signal that includes one or more signatures of the one or more neighboring nodes;
transmit, during a repetition frame, the first signal received during the initial frame; and
receive, during the repetition frame, a second signal that includes a retransmission of signals received by the one or more neighboring nodes during the initial frame; and
a processor operatively coupled to the memory and the transceiver, wherein the processor is configured to determine a distance from the node to each of the one or more neighboring nodes based at least in part on the first signal and the second signal.
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Abstract
A node in a wireless network includes a memory, transceiver, and processor operatively coupled to one another. The memory stores a signature of the node. The transceiver is configured to transmit, during an initial frame, the signature to one or more neighboring nodes, and receive, during the initial frame, a first signal that includes one or more signatures of the one or more neighboring nodes. The transceiver is also configured to transmit, during a repetition frame, a scrambled waveform of the first signal received during the initial frame, and receive, during the repetition frame, a second signal that includes a retransmission of signals received by the one or more neighboring nodes during the initial frame. The processor is configured to determine a distance from the node to each of the one or more neighboring nodes based at least in part on the first signal and the second signal.
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Citations
20 Claims
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1. A node in a wireless network, wherein the node comprises:
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a memory configured to store a signature of the node; a transceiver operatively coupled to the memory and configured to; transmit, during an initial frame, the signature of the node to one or more neighboring nodes; receive, during the initial frame, a first signal that includes one or more signatures of the one or more neighboring nodes; transmit, during a repetition frame, the first signal received during the initial frame; and receive, during the repetition frame, a second signal that includes a retransmission of signals received by the one or more neighboring nodes during the initial frame; and a processor operatively coupled to the memory and the transceiver, wherein the processor is configured to determine a distance from the node to each of the one or more neighboring nodes based at least in part on the first signal and the second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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transmitting, by a transceiver of a node during an initial frame, a signature of the node to one or more neighboring nodes; receiving, by the transceiver of the node during the initial frame, a first signal that includes one or more signatures of the one or more neighboring nodes; transmitting, by the transceiver of the node during a repetition frame, the first signal received during the initial frame; receiving, by the transceiver of the node during the repetition frame, a second signal that includes a retransmission of signals received by the one or more neighboring nodes during the initial frame; and determining, by a processor of the node, a distance from the node to each of the one or more neighboring nodes based at least in part on the first signal and the second signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification