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1. 发明申请

US20230134224A1 Network Location Service 有权
公开(公告)号：US20230134224A1
公开(公告)日：2023-05-04
申请号：US18046153
申请日：2022-10-12
申请人： Parallel Wireless, Inc. , PhasorLab, Inc.
发明人： Prashanth Rao , Joshua C. Park
IPC分类号： H04W4/029 , H04W24/10 , H04L5/00
摘要： A method is disclosed of providing a 5G network location service, comprising: receiving, at a gNodeB, a measurement request from a Location Management Function (LMF) device; initiating, by the gNodeB in response to receiving the measurement request, a location determining SRS; sending, by the gNodeB, a Sounding Reference Signal (SRS) schedule to a master Hyper Speed Network (HSN) node; receiving, by the gNodeB, a message having the User equipment (UE) location; and using, by the gNodeB, the UE location as an NG-Radio Access Network (NG-RAN) Access Point location in a measurement response.

2. 发明申请

US20210360552A1 Sounding Signals for Sub-Meter Base Station Localization 有权
公开(公告)号：US20210360552A1
公开(公告)日：2021-11-18
申请号：US17323772
申请日：2021-05-18
申请人： Parallel Wireless, Inc. , PhasorLab, Inc.
发明人： Ramesh Annavajjala , Efi Dror , Steven Paul Papa , Joshua C. Park , Soumendra Nanda , Prashanth Rao
IPC分类号： H04W56/00 , H04W88/16 , H04W16/32 , H04L5/00 , H04W48/16
摘要： Systems and methods are disclosed for providing base station localization. In one embodiment the system includes a network including a base station such as a 5G gNodeB (gNB); a Hetnet Gateway (HNG) in communication with the gNB, wherein the HNG includes a location server and wherein the HNG virtualizes and abstracts a collection of base stations and provides a complex network under its purview as a simple base station to a mobile packet core network; a plurality of Hyper Sync Network (HSN) nodes in communication with the gNB and the HNG, wherein the plurality of HSN nodes listen to User Equipments (UEs) to locate the UEs and to synchronize clocks on the gNB with the collection of HSN nodes or other gNBs; and an Evolved Serving Mobile Location Center (E-SMLC) server in communication with the HNG and for reporting the location of a UE.

3. 发明申请

US20220394588A1 Self-Organizing Hyper Sync Network 有权
公开(公告)号：US20220394588A1
公开(公告)日：2022-12-08
申请号：US17805451
申请日：2022-06-03
申请人： PhasorLab, Inc.
发明人： Joshua C. Park , Paul McFarthing , Jian Cui , Devang Topiwala , Pranay Kumar Eedara , Yongsoon Lee
IPC分类号： H04W40/04 , H04L45/17 , H04L45/122 , H04L45/00
摘要： 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.

4. 发明授权

US10856242B2 Wireless time and frequency lock loop system 有权
公开(公告)号：US10856242B2
公开(公告)日：2020-12-01
申请号：US15820427
申请日：2017-11-21
申请人： PhasorLab, Inc.
发明人： Joshua C. Park , Glen Wolverton
IPC分类号： H04W56/00 , H04L12/26 , H04L5/00 , H04W84/20
摘要： Systems and methods for wireless synchronization are disclosed. In one embodiment, a method is disclosed for synchronizing a slave device to a master device, comprising: receiving, at a local device, a master device reference signal in the form of a modulated radio frequency (RF) signal from a master device; receiving, at the local device, a master device time stamp from the master device; computing a time offset of the master device reference signal relative to a local reference oscillator signal of a local oscillator, using the master device time stamp; computing a frequency offset of the master device reference signal relative to the local reference oscillator signal; generating a local reference oscillator control signal based on the computed time offset and the computer frequency offset; and adjusting the local reference oscillator to maintain a frequency and time lock with the master device reference signal at the local device.

5. 发明申请

US20200309531A1 Synthetic Mega Gyroscope 审中-公开
公开(公告)号：US20200309531A1
公开(公告)日：2020-10-01
申请号：US16835298
申请日：2020-03-30
申请人： PhasorLab, Inc.
发明人： Jian Cui , Joshua C. Park
IPC分类号： G01C21/18 , G01C19/34 , G01P15/14
摘要： Systems and methods are disclosed herein for blind frequency synchronization. In one embodiment, a synthetic inertial measurement unit (IMU) is disclosed, comprising: a plurality of nodes wirelessly coupled to each other, each The method may further comprise: a wireless transceiver at a particular node for providing wireless communications with at least one other node of the plurality of nodes, configured to receive I and Q radio samples from the other node, and to determine a frequency offset of the other node based on the received I and Q radio samples, and to synchronize a clock at the particular node, a frequency offset synchronization module at the particular node coupled to the wireless transceiver, at the particular node, and an IMU sensor for determining rotation, acceleration, and speed of the particular node; and an IMU location estimation module for using time of arrival information assuming that the clock may be synchronized at the node, the determined distance, and the rotation, acceleration, and speed of the particular node received from the IMU sensor to determine the location of the nodes, thereby providing enhanced determination of location of the plurality of nodes.

6. 发明申请

US20180146443A1 Wireless Time and Frequency Lock Loop System 审中-公开
公开(公告)号：US20180146443A1
公开(公告)日：2018-05-24
申请号：US15820427
申请日：2017-11-21
申请人： PhasorLab, Inc.
发明人： Joshua C. Park , Glen Wolverton
IPC分类号： H04W56/00 , H04L5/00 , H04L12/26
CPC分类号： H04W56/001 , H04L5/0048 , H04L5/0053 , H04L43/0864 , H04L43/106 , H04W84/20
摘要： Systems and methods for wireless synchronization are disclosed. In one embodiment, a method is disclosed for synchronizing a slave device to a master device, comprising: receiving, at a local device, a master device reference signal in the form of a modulated radio frequency (RF) signal from a master device; receiving, at the local device, a master device time stamp from the master device; computing a time offset of the master device reference signal relative to a local reference oscillator signal of a local oscillator, using the master device time stamp; computing a frequency offset of the master device reference signal relative to the local reference oscillator signal; generating a local reference oscillator control signal based on the computed time offset and the computer frequency offset; and adjusting the local reference oscillator to maintain a frequency and time lock with the master device reference signal at the local device.

7. 发明申请

US20170227623A1 Angle of Arrival Measurements Using RF Carrier Synchronization and Phase Alignment Methods 审中-公开
公开(公告)号：US20170227623A1
公开(公告)日：2017-08-10
申请号：US15495972
申请日：2017-04-24
申请人： PhasorLab, Inc.
发明人： Joshua C. Park , Cuneyt Demirdag , Glen Wolverton , Devang Topiwala , Paul McFarthing
IPC分类号： G01S3/48 , H04L7/00
CPC分类号： 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
摘要： 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.

8. 发明授权

US11412347B2 High-resolution high-dynamic range doppler-effect measurement using modulated carrier signals 有权
公开(公告)号：US11412347B2
公开(公告)日：2022-08-09
申请号：US15873842
申请日：2018-01-17
申请人： PhasorLab, Inc.
发明人： Cuneyt Demirdag , Joshua C. Park , Glen Wolverton , Devang Topiwala
IPC分类号： H04W4/02 , G01S13/58 , H04W4/46 , G01S11/10 , G01S5/02 , G01S3/48 , H04W84/00 , H04B7/0413
摘要： 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.

9. 发明授权

US10454741B2 High-precision blind carrier synchronization methods for LTE SC-FDMA uplink 有权
公开(公告)号：US10454741B2
公开(公告)日：2019-10-22
申请号：US15295349
申请日：2016-10-17
申请人： PhasorLab, Inc.
发明人： Paul McFarthing , Joshua C. Park , Jian Cui , Cuneyt Demirdag , Glen Wolverton , Devang Topiwala
IPC分类号： H04L27/00 , H04L27/26 , H04W56/00 , H04J11/00
摘要： 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.

10. 发明申请

US20190320400A1 RF Carrier Synchronization and Phase Alignment Methods and Systems 审中-公开
公开(公告)号：US20190320400A1
公开(公告)日：2019-10-17
申请号：US16423952
申请日：2019-05-28
申请人： PhasorLab, Inc.
发明人： Joshua C. Park
IPC分类号： H04W56/00 , H04L27/00 , H04L27/36 , G01S3/18 , H04B7/0413 , H04L7/00 , H04L25/02 , H04W64/00
摘要： A method is disclosed for synchronization, comprising obtaining baseband signal samples of a baseband information signal having an in-phase signal sample and a quadrature signal sample, the baseband information signal having been generated by mixing a received modulated carrier signal with a local oscillator (LO) signal having an LO frequency, the modulated carrier signal being an in-phase signal and quadrature signal having a substantially uncorrelated nature and derived from different input data sets; determining an offset frequency rotation based on an estimated residual correlation between the in-phase signal samples and the quadrature signal samples; and, deriving synchronization information from the offset frequency rotation, wherein the received modulated carrier signal is a quadrature-modulated signal with arbitrary orthogonal in-phase and quadrature signal components.

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