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1.发明申请公开(公告)号：US20180206075A1
公开(公告)日：2018-07-19
申请号：US15873842
申请日：2018-01-17
Applicant: PhasorLab, Inc.
Inventor： Cuneyt Demirdag , Joshua C. Park , Glen Wolverton , Devang Topiwala
CPC classification number: H04W4/023 , G01S3/48 , G01S5/0257 , G01S11/10 , G01S13/584 , H04B7/0413 , H04W4/027 , H04W4/46 , H04W84/005
Abstract: Described in this document are ways to accomplish high resolution and high dynamic range Doppler-Effect measurements for use in wireless communications and other applications such as positioning. Doppler Effect (interchangeably called Doppler shift or Doppler frequency shift) measurements have traditionally been done with purpose-built devices, such as pulse-based radars. Presented in this document are alternative ways to incorporate Doppler frequency shift measurement using modulated carrier signals with a conventional radio, without additional hardware.
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2.发明授权公开(公告)号：US11412347B2
公开(公告)日：2022-08-09
申请号：US15873842
申请日：2018-01-17
Applicant: PhasorLab, Inc.
Inventor： Cuneyt Demirdag , Joshua C. Park , Glen Wolverton , Devang Topiwala
Abstract: Described in this document are ways to accomplish high resolution and high dynamic range Doppler-Effect measurements for use in wireless communications and other applications such as positioning. Doppler Effect (interchangeably called Doppler shift or Doppler frequency shift) measurements have traditionally been done with purpose-built devices, such as pulse-based radars. Presented in this document are alternative ways to incorporate Doppler frequency shift measurement using modulated carrier signals with a conventional radio, without additional hardware.
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公开(公告)号：US10454741B2
公开(公告)日：2019-10-22
申请号：US15295349
申请日：2016-10-17
Applicant: PhasorLab, Inc.
Inventor： Paul McFarthing , Joshua C. Park , Jian Cui , Cuneyt Demirdag , Glen Wolverton , Devang Topiwala
Abstract: Methods and systems are described for frequency domain correction, time domain correction, and combinations thereof. Each Long Term Evolution (LTE) uplink residual frequency offset can be determined with less than 1 part per billion accuracy simultaneously and used for frequency offset correction. The disclosed method utilizes the same modulated signals for data and control as the 3GPP LTE wireless standard and can be embedded directly into the base station (downlink) PHY without additional hardware. The use of the disclosed methods provide multiple ways to simultaneously improve the uplink data throughput for every user in an LTE multiple access wireless system.
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Patent Agency Ranking
公开(公告)号：US20220394588A1
公开(公告)日：2022-12-08
申请号：US17805451
申请日：2022-06-03
Applicant: PhasorLab, Inc.
Inventor： Joshua C. Park , Paul McFarthing , Jian Cui , Devang Topiwala , Pranay Kumar Eedara , Yongsoon Lee
IPC: H04W40/04 , H04L45/17 , H04L45/122 , H04L45/00
Abstract: A self-organizing mesh network system is disclosed, comprising: at least one master node generating a timing reference signal; a plurality of regular nodes deriving time synchronization from the timing reference signal; and a wireless medium for communicating location and timestamp information among the plurality of regular nodes, The plurality of regular nodes may be configured to each use communicated location and timestamp information of nearby nodes to independently generate a location map of the nearby nodes. The plurality of regular nodes may be configured to accept an additional regular node. The plurality of regular nodes may be configured to allow a node of the plurality of regular nodes to exit the plurality of regular nodes. The plurality of regular nodes may each use communicated location and timestamp information of the plurality of regular nodes to independently generate a location map of each of the plurality of regular nodes.
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5.发明申请公开(公告)号：US20170227623A1
公开(公告)日：2017-08-10
申请号：US15495972
申请日：2017-04-24
Applicant: PhasorLab, Inc.
Inventor： Joshua C. Park , Cuneyt Demirdag , Glen Wolverton , Devang Topiwala , Paul McFarthing
CPC classification number: G01S3/48 , G01S3/18 , G01S3/46 , H04B7/0413 , H04B7/0617 , H04B7/0802 , H04B7/086 , H04B7/10 , H04L7/0016 , H04L25/02 , H04L27/0014 , H04L2027/003 , H04L2027/0046 , H04L2027/0053 , H04L2027/0067 , H04W56/0035
Abstract: A method for determining an angle of arrival (AOA) of a received signal is disclosed, comprising: generating a baseband information signal by mixing a received signal with a local oscillator (LO) signal, the received signal being an in-phase signal and quadrature signal uncorrelated with each other and derived from different input data sets; obtaining baseband signal samples of the baseband information signal having an in-phase signal sample and a quadrature signal sample; determining a transmitter phase offset based on an estimated correlation between the in-phase signal samples and the quadrature signal samples; performing a plurality of phase measurements using a plurality of antennas to obtain a plurality of phase measurements; correcting the plurality of phase measurements based on the transmitter phase offset to produce a plurality of corrected phase measurement; and calculating an AOA of the received signal based on the difference between the plurality of corrected phase measurements.
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6.发明申请公开(公告)号：US20220400454A1
公开(公告)日：2022-12-15
申请号：US17806943
申请日：2022-06-14
Applicant: PhasorLab, Inc.
Inventor： Joshua C. Park , Devang Topiwala
Abstract: A self-organizing mesh network and protocol, herein identified as the HSN Mesh or Self-Expanding Mesh (SEM), enables dynamic addition and subtraction of mesh nodes by allowing nodes to claim a conflict-free slot for transmission. Slot allocation will not be fixed or predetermined and will be performed in a decentralized manner that suits the existing SEM mesh structure which does not have any strict hierarchy or central coordinator nodes. The dynamic slot allocation strategy will allow the seamless expansion of the mesh. The disclosed self-organizing mesh is: a distributed self organizing mobile mesh network; highly reliable and resilient mesh through redundant connections and built in self-discovery; and a peer to peer network with flat hierarchy, meaning no need for central hub or coordinator node. Distributed slot reusability ensures efficient slot allocation. synchronized mesh allows to deploy time critical applications
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7.发明授权公开(公告)号：US11085990B2
公开(公告)日：2021-08-10
申请号：US15929279
申请日：2020-04-21
Applicant: PhasorLab, Inc.
Inventor： Joshua C. Park , Cuneyt Demirdag , Glen Wolverton , Devang Topiwala , Paul McFarthing
IPC: G01S3/48 , H04L7/00 , H04B7/06 , G01S3/18 , H04L25/02 , H04W56/00 , H04B7/08 , G01S3/46 , H04B7/0413 , H04L27/00 , H04B7/10
Abstract: A method for determining an angle of arrival (AOA) of a received signal is disclosed, comprising: generating a baseband information signal by mixing a received signal with a local oscillator (LO) signal, the received signal being an in-phase signal and quadrature signal uncorrelated with each other and derived from different input data sets; obtaining baseband signal samples of the baseband information signal having an in-phase signal sample and a quadrature signal sample; determining a transmitter phase offset based on an estimated correlation between the in-phase signal samples and the quadrature signal samples; performing a plurality of phase measurements using a plurality of antennas to obtain a plurality of phase measurements; correcting the plurality of phase measurements based on the transmitter phase offset to produce a plurality of corrected phase measurement; and calculating an AOA of the received signal based on the difference between the plurality of corrected phase measurements.
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公开(公告)号：US20170111197A1
公开(公告)日：2017-04-20
申请号：US15295349
申请日：2016-10-17
Applicant: PhasorLab, Inc.
Inventor： Paul McFarthing , Joshua C. Park , Jian Cui , Cuneyt Demirdag , Glen Wolverton , Devang Topiwala
CPC classification number: H04L27/265 , H04J11/00 , H04L27/2636 , H04L27/266 , H04L27/2671 , H04L27/2676 , H04L27/2682 , H04W56/002
Abstract: Methods and systems are described for frequency domain correction, time domain correction, and combinations thereof. Each Long Term Evolution (LTE) uplink residual frequency offset can be determined with less than 1 part per billion accuracy simultaneously and used for frequency offset correction. The disclosed method utilizes the same modulated signals for data and control as the 3GPP LTE wireless standard and can be embedded directly into the base station (downlink) PHY without additional hardware. The use of the disclosed methods provide multiple ways to simultaneously improve the uplink data throughput for every user in an LTE multiple access wireless system.
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