公开(公告)号：US20230280439A1

公开(公告)日：2023-09-07

申请号：US18197556

申请日：2023-05-15

Applicant: ZaiNar, Inc.

Inventor： Philip Kratz ,  Daniel Jacker ,  Mainak Chowdhury ,  Alexander Hooshmand

IPC: G01S5/02 ,  G01S5/14 ,  H04W84/18

CPC classification number: G01S5/0221 ,  G01S5/0215 ,  G01S5/14 ,  H04W84/18

Abstract: A method including, at each node in each pair of nodes in a network: transmitting an outbound synchronization signal; generating a self-receive signal based on the outbound synchronization signal; detecting the self-receive signal at a self-receive TOA; detecting an inbound synchronization signal; based on the pair of self-receive TOAs and the pair of synchronization TOAs, for each pair of nodes in the network: calculating a pairwise time offset and distance; for each node in the network: based on the set of pairwise distances, calculating a location and a time bias of the node. The method also includes: at each node in the network, detecting a localization signal, transmitted by a device, at a localization TOA; and calculating a location of the device based on, for each node in the network, the localization signal detected at the node, and the time bias and the relative location of the node.

公开(公告)号：US11856483B2

公开(公告)日：2023-12-26

申请号：US17152719

申请日：2021-01-19

Applicant: ZaiNar, Inc.

Inventor： Philip A. Kratz ,  Daniel Jacker

IPC: H04W4/029 ,  H04L27/22 ,  H04W56/00 ,  H04W4/02 ,  H04W64/00 ,  H04L67/53 ,  H04W84/18 ,  H04W84/12 ,  H04W4/33

CPC classification number: H04W4/029 ,  H04L27/22 ,  H04L67/53 ,  H04W4/02 ,  H04W56/002 ,  H04W64/00 ,  H04W4/33 ,  H04W84/12 ,  H04W84/18

Abstract: A method of determining a reference clock in a mesh network includes receiving multiple signals, correlating the multiple signals with a local signal generated by the first node to determine a coarse set of time differences, refining the coarse set of time differences using a phase of a carrier signal of the multiple signals to produce a refined set of time differences, and using the refined set of time differences to define a reference clock.

公开(公告)号：US10859666B1

公开(公告)日：2020-12-08

申请号：US16814285

申请日：2020-03-10

Applicant: ZaiNar, Inc.

Inventor： Philip Kratz ,  Daniel Jacker ,  Mainak Chowdhury ,  Alexander Hooshmand

IPC: H04W24/00 ,  G01S5/02 ,  G01S5/14 ,  H04W84/18

Abstract: A method including, at each node in each pair of nodes in a network: transmitting an outbound synchronization signal; generating a self-receive signal based on the outbound synchronization signal; detecting the self-receive signal at a self-receive TOA; detecting an inbound synchronization signal; based on the pair of self-receive TOAs and the pair of synchronization TOAs, for each pair of nodes in the network: calculating a pairwise time offset and distance; for each node in the network: based on the set of pairwise distances, calculating a location and a time bias of the node. The method also includes: at each node in the network, detecting a localization signal, transmitted by a device, at a localization TOA; and calculating a location of the device based on, for each node in the network, the localization signal detected at the node, and the time bias and the relative location of the node.

公开(公告)号：US10455350B2

公开(公告)日：2019-10-22

申请号：US15644717

申请日：2017-07-07

Applicant: ZaiNar, Inc.

Inventor： Philip A. Kratz ,  Daniel Jacker

IPC: H04M1/00 ,  H04W4/02 ,  H04L27/22 ,  H04L29/08 ,  H04W64/00 ,  H04W84/18 ,  H04W84/12 ,  H04W4/33

Abstract: A method of determining a reference clock in a mesh network includes receiving multiple signals, correlating the multiple signals with a local signal generated by the first node to determine a coarse set of time differences, refining the coarse set of time differences using a phase of a carrier signal of the multiple signals to produce a refined set of time differences, and using the refined set of time differences to define a reference clock.

公开(公告)号：US12174307B2

公开(公告)日：2024-12-24

申请号：US18197556

申请日：2023-05-15

Applicant: ZaiNar, Inc.

Inventor： Philip Kratz ,  Daniel Jacker ,  Mainak Chowdhury ,  Alexander Hooshmand

IPC: G01S5/02 ,  G01S5/14 ,  H04W84/18

Abstract: A method including, at each node in each pair of nodes in a network: transmitting an outbound synchronization signal; generating a self-receive signal based on the outbound synchronization signal; detecting the self-receive signal at a self-receive TOA; detecting an inbound synchronization signal; based on the pair of self-receive TOAs and the pair of synchronization TOAs, for each pair of nodes in the network: calculating a pairwise time offset and distance; for each node in the network: based on the set of pairwise distances, calculating a location and a time bias of the node. The method also includes: at each node in the network, detecting a localization signal, transmitted by a device, at a localization TOA; and calculating a location of the device based on, for each node in the network, the localization signal detected at the node, and the time bias and the relative location of the node.

公开(公告)号：US20240196169A1

公开(公告)日：2024-06-13

申请号：US18511151

申请日：2023-11-16

Applicant: ZaiNar, Inc.

Inventor： Philip A. Kratz ,  Daniel Jacker

IPC: H04W4/029 ,  H04L27/22 ,  H04L67/53 ,  H04W4/02 ,  H04W4/33 ,  H04W56/00 ,  H04W64/00 ,  H04W84/12 ,  H04W84/18

CPC classification number: H04W4/029 ,  H04L27/22 ,  H04L67/53 ,  H04W4/02 ,  H04W56/002 ,  H04W64/00 ,  H04W4/33 ,  H04W84/12 ,  H04W84/18

Abstract: A method of determining a reference clock in a mesh network includes receiving multiple signals, correlating the multiple signals with a local signal generated by the first node to determine a coarse set of time differences, refining the coarse set of time differences using a phase of a carrier signal of the multiple signals to produce a refined set of time differences, and using the refined set of time differences to define a reference clock.

公开(公告)号：US20210321218A1

公开(公告)日：2021-10-14

申请号：US17152719

申请日：2021-01-19

Applicant: ZaiNar, Inc.

Inventor： Philip A. Kratz ,  Daniel Jacker

IPC: H04W4/029 ,  H04L27/22 ,  H04W56/00 ,  H04L29/08 ,  H04W4/02 ,  H04W64/00

Abstract: A method of determining a reference clock in a mesh network includes receiving multiple signals, correlating the multiple signals with a local signal generated by the first node to determine a coarse set of time differences, refining the coarse set of time differences using a phase of a carrier signal of the multiple signals to produce a refined set of time differences, and using the refined set of time differences to define a reference clock.

公开(公告)号：US20200260230A1

公开(公告)日：2020-08-13

申请号：US16864024

申请日：2020-04-30

Applicant: ZaiNar, Inc.

Inventor： Philip A. Kratz ,  Daniel Jacker

IPC: H04W4/029 ,  H04W64/00 ,  H04W4/02 ,  H04L29/08 ,  H04W56/00 ,  H04L27/22

Abstract: A method of determining a reference clock in a mesh network includes receiving multiple signals, correlating the multiple signals with a local signal generated by the first node to determine a coarse set of time differences, refining the coarse set of time differences using a phase of a carrier signal of the multiple signals to produce a refined set of time differences, and using the refined set of time differences to define a reference clock.

公开(公告)号：US11686805B1

公开(公告)日：2023-06-27

申请号：US17080729

申请日：2020-10-26

Applicant: ZaiNar, Inc.

Inventor： Philip Kratz ,  Daniel Jacker ,  Mainak Chowdhury ,  Alexander Hooshmand

IPC: G01S5/02 ,  G01S5/14 ,  H04W84/18

CPC classification number: G01S5/0221 ,  G01S5/0215 ,  G01S5/14 ,  H04W84/18

Abstract: A method including, at each node in each pair of nodes in a network: transmitting an outbound synchronization signal; generating a self-receive signal based on the outbound synchronization signal; detecting the self-receive signal at a self-receive TOA; detecting an inbound synchronization signal; based on the pair of self-receive TOAs and the pair of synchronization TOAs, for each pair of nodes in the network: calculating a pairwise time offset and distance; for each node in the network: based on the set of pairwise distances, calculating a location and a time bias of the node. The method also includes: at each node in the network, detecting a localization signal, transmitted by a device, at a localization TOA; and calculating a location of the device based on, for each node in the network, the localization signal detected at the node, and the time bias and the relative location of the node.

公开(公告)号：US10932094B2

公开(公告)日：2021-02-23

申请号：US16864024

申请日：2020-04-30

Applicant: ZaiNar, Inc.

Inventor： Philip A. Kratz ,  Daniel Jacker

IPC: H04M1/00 ,  H04W4/029 ,  H04L27/22 ,  H04W56/00 ,  H04L29/08 ,  H04W4/02 ,  H04W64/00 ,  H04W84/18 ,  H04W84/12 ,  H04W4/33

Abstract: A method of determining a reference clock in a mesh network includes receiving multiple signals, correlating the multiple signals with a local signal generated by the first node to determine a coarse set of time differences, refining the coarse set of time differences using a phase of a carrier signal of the multiple signals to produce a refined set of time differences, and using the refined set of time differences to define a reference clock.