Iso-chronic Type Patents (Class 342/387)
  • Patent number: 11852713
    Abstract: Provided are a system and method for coordinating dual wireless communications protocols when implementing a time difference of arrival framework for ranging between nodes. A first of the protocols (e.g., BLE) can be used to initiate synchronization and measurement staging, while ensuing calculations according to such synchronization and measurement can be conducted according a second of the protocols (e.g., UWB). In these regards, transitioning between the aforementioned protocols can result in a conservation of air time involved in an entirety of TDOA processes, and thus a conservation of energy.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: December 26, 2023
    Assignee: Link Labs, Inc.
    Inventor: Mark O. Bloechl
  • Patent number: 11812415
    Abstract: A method for allocating aggressive signal carriers in a target band of a wireless communication network is provided. The network includes at least one long term evolution (LTE) node and at least one non-LTE transmission source. The target band includes at least two adjacent pairs of contiguous radio frequency (RF) channels. The method includes steps of scanning each contiguous RF channel of the target band to measure a respective value of non-LTE RF energy therein, determining, from the measured non-LTE RF energy, that a first one of the contiguous RF channels is occupied by a non-LTE carrier, and allocating an LTE carrier to a second one of the contiguous RF channels, different than the first one of the contiguous RF channels, based on the determination.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: November 7, 2023
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Dorin Gheorghe Viorel, Jennifer Andreoli-Fang, Neeharika Allanki
  • Patent number: 11722851
    Abstract: A method for calculating a time-of-arrival of a multicarrier uplink signal includes: accessing a multicarrier reference signal including a subcarrier reference signal for each subcarrier frequency in a set of subcarrier frequencies; receiving the multicarrier uplink signal transmitted from a user device, the multicarrier uplink signal including a subcarrier uplink signal for each subcarrier frequency in the set of subcarrier frequencies; for each subcarrier frequency in the set of subcarrier frequencies, calculating a phase difference, in a set of phase differences, between the subcarrier reference signal for the subcarrier frequency and a subcarrier uplink signal for the subcarrier frequency; calculating a time-of-arrival of the multicarrier uplink signal at the transceiver based on the set of adjusted phase differences; and transmitting the time-of-arrival of the multicarrier uplink signal to a remote server.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: August 8, 2023
    Assignee: ZaiNar, Inc.
    Inventors: Jonathan Lu, Mainak Chowdhury, Philip A. Kratz
  • Patent number: 11702214
    Abstract: An unmanned flight equipment according to an embodiment of the present invention includes: an aerial vehicle capable of flying in an unmanned manner; an abnormality recognition part-configured to recognize an abnormal situation in which a determination is made that it is difficult for the aerial vehicle to continue flight; and an alarm device held on the aerial vehicle and configured to be detached from the aerial vehicle and to warn neighborhood of abnormality when the abnormality recognition part recognizes the abnormal situation.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: July 18, 2023
    Assignee: Rakuten Group, Inc.
    Inventor: Kenichi Lee
  • Patent number: 11705936
    Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: July 18, 2023
    Inventors: Arun Raghupathy, Ganesh Pattabiraman, Subramanian S. Meiyappan, Hari Sankar
  • Patent number: 11683772
    Abstract: Embodiments include detection of physical events associated with a wireless network, where the detected physical events are associated with the measurable effects on radio signals between devices in the wireless network. The detected physical event and associated radio signal information is used to provide precise low cost time synchronization for a device in a network.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: June 20, 2023
    Assignee: Cisco Technology, Inc.
    Inventors: David A. Maluf, Alexander X. Ke, Amr Elnakeeb
  • Patent number: 11644525
    Abstract: A location server collects from access points at known locations in a venue, which is represented by grid locations defined by parameters accessible to the location server, (i) ultra wideband (UWB) location measurements for a UWB location technology based on UWB transmissions from mobile devices in the venue, and (ii) non-UWB location measurements for non-UWB location technologies based on non-UWB transmissions from the mobile devices. The location server associates the non-UWB location measurements for the non-UWB location technologies with the grid locations, using the UWB location measurements as reference measurements. The location server populates location calibration records for the grid locations of the venue with the non-UWB location measurements associated with the grid locations. The location server calibrates the non-UWB location technologies at the grid locations based on the non-UWB location measurements in the location calibration records associated with the grid locations.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: May 9, 2023
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Matthew Aaron Silverman, Jerome Henry, Robert Edgar Barton, Sivadeep R. Kalavakuru
  • Patent number: 11637586
    Abstract: Some embodiments of the present inventive concept provide a system for maintaining clock synchronization including an ultra-wideband (UWB) transmitting system and a UWB receiving system. The high precision input clock at the transmitting system produces a high precision clock frequency. A message is sent from the transmitting system including a transmit time of the message in UWB transmitter clock units. The message is received at the UWB receiving system at an arrival time in UWB receiver clock units. A time of flight (ToF) and an oscillator offset is calculated based on the transmit time included in the message and the arrival time. A tuning register uses the calculated oscillator adjustment to adjust the low precision resonator to synchronize the low precision resonator with the high precision input clock at the UWB transmitting system.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: April 25, 2023
    Assignee: Wiser Systems, Inc.
    Inventor: Seth Edward-Austin Hollar
  • Patent number: 11621738
    Abstract: A transceiver circuit is disclosed. The transceiver circuit includes an antenna, a receiver RF chain configured to receive a receiver RF signal from the antenna, a transmitter RF chain configured to transmit a transmitter RF signal to the antenna, and a controller configured to cause the receiver RF chain to receive a first distance estimate between the antenna and another transceiver circuit, to calculate a second distance estimate between the antenna and the other transceiver circuit, and to determine a range estimate between the antenna and the other transceiver circuit based on the first distance estimate and the second distance estimate.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: April 4, 2023
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventors: Mohammad Ranjbar, Amir Dezfooliyan, Waleed Younis
  • Patent number: 11561275
    Abstract: A moving robot has a body and at least one wheel for moving the main body. The moving robot has a transceiver to communicate with a plurality of location information transmitters located within an area. The moving robot also has a memory storing coordinate information regarding positions of the location information transmitters. Further, the moving robot has a controller that sets a virtual boundary based on location information determined using signals transmitted by the location information transmitters. The controller controls the wheel so that the main body is prevented from traveling outside the virtual boundary. The controller sets a reference location information transmitter and corrects the stored coordinate information by correcting height errors based on height differences between the reference location information transmitter and the other location information transmitters. The controller also corrects a current position of the main body based on the corrected stored coordinate information.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: January 24, 2023
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyoungsuk Ko, Sungwook Lee, Hyungsub Lee, Koh Choi
  • Patent number: 11474192
    Abstract: Disclosed are techniques for positioning. In an aspect, a positioning entity determines a first time of flight (ToF) of a first non-line-of-sight (NLOS) multipath component of a first radio frequency (RF) signal transmitted by a physical transmission-reception point (TRP) to at least a first user equipment (UE), determines a location of a virtual TRP associated with the physical TRP based at least on the first ToF, and determines a location of at least a second UE based, at least in part, on the location of the virtual TRP.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: October 18, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Roohollah Amiri, Srinivas Yerramalli, Rajat Prakash, Taesang Yoo
  • Patent number: 11463185
    Abstract: A communication technique for combining a fifth generation (5G) communication system with Internet of Things (IoT) technology for supporting a higher data transmission rate than a fourth generation (4G) system, and a system thereof, are provided. A method for identifying a transmission characteristic of a radio signal in a wireless communication system according to one embodiment of the present disclosure comprises the steps of: identifying a signal transmission position; identifying a signal reception position; identifying an area in which a movable object is located between the signal transmission position and the signal reception position; identifying a characteristic of the movable object in the area; and identifying a transmission characteristic of a radio signal transmitted from the signal transmission position to the signal reception position based on the characteristic of the movable object.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: October 4, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Soonyoung Lee, Sungbum Park, Sanghyun Chang, Minsung Cho
  • Patent number: 11420754
    Abstract: An unmanned flight equipment according to an embodiment of the present invention includes: an aerial vehicle capable of flying in an unmanned manner; an abnormality recognition part-configured to recognize an abnormal situation in which a determination is made that it is difficult for the aerial vehicle to continue flight; and an alarm device held on the aerial vehicle and configured to be detached from the aerial vehicle and to warn neighborhood of abnormality when the abnormality recognition part recognizes the abnormal situation.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: August 23, 2022
    Assignee: Rakuten Group, Inc.
    Inventor: Kenichi Lee
  • Patent number: 11425536
    Abstract: A method for calculating a time-of-arrival of a multicarrier uplink signal includes: accessing a multicarrier reference signal including a subcarrier reference signal for each subcarrier frequency in a set of subcarrier frequencies; receiving the multicarrier uplink signal transmitted from a user device, the multicarrier uplink signal including a subcarrier uplink signal for each subcarrier frequency in the set of subcarrier frequencies; for each subcarrier frequency in the set of subcarrier frequencies, calculating a phase difference, in a set of phase differences, between the subcarrier reference signal for the subcarrier frequency and a subcarrier uplink signal for the subcarrier frequency; calculating a time-of-arrival of the multicarrier uplink signal at the transceiver based on the set of adjusted phase differences; and transmitting the time-of-arrival of the multicarrier uplink signal to a remote server.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: August 23, 2022
    Assignee: ZaiNar, Inc.
    Inventors: Jonathan Lu, Mainak Chowdhury, Philip A. Kratz
  • Patent number: 11378645
    Abstract: A system for determining a geographical position of a transmitting device is disclosed. In embodiments, the system includes a concentrator device and a plurality of sensors. In embodiments, each sensor may be configured to: receive an emitter signal from a transmitting device; generate a demodulated sequence of the emitter signal; generate a time-of-arrival (TOA) estimate of the emitter signal; and transmit the demodulated sequence and the TOA estimate to the concentrator device. In embodiments, the concentrator may be configured to: receive a first demodulated sequence and a first TOA estimate (TOA1) from a first sensor; receive a second demodulated sequence and a second TOA estimate (TOA2), from a second sensor; determine a first arbitrary timing offset (ATO1) between the first demodulated sequence and the second demodulated sequence; and determine a first differential TOA estimate (TOADiff1) between the first sensor and the second sensor.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: July 5, 2022
    Assignee: Rockwell Collins, Inc.
    Inventor: Carlos J. Chavez
  • Patent number: 11356805
    Abstract: A method for determining location of a target within an indoor environment, including the steps of: classifying a set of anchors having known locations within the indoor environment and a set of targets having unknown locations within the indoor environment, wherein each of the anchors and targets comprise hardware having sensors and wireless communication capabilities; creating a set of ordinal pair data sets comprising relative distances between each target and all anchors; ranking and aggregating the ordinal pair data sets to produce a set of dissimilarities that approximate distances; transforming the dissimilarities into estimated distances between each anchor and target using the known distances between the anchors as calibration; and inferring location of targets by formulating and solving a multidimensional unfolding optimization.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: June 7, 2022
    Assignee: CLARKSON UNIVERSITY
    Inventors: Mahesh K. Banavar, Jie Sun, Shandeepa Wickramasinghe
  • Patent number: 11333522
    Abstract: A localization system includes at least three locally defined locating devices whose clocks are synchronized and that receive signals of at least one vehicle; and a determination device that is configured to receive the signals of the at least one vehicle and data regarding distances of the locating devices relative to the vehicle, ascertain from the received data a surroundings model containing position data of the vehicle, and wirelessly transmit the surroundings model to the vehicle.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: May 17, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Ruediger-Walter Henn, Jan Rohde, Michael Gabb
  • Patent number: 11310754
    Abstract: A method performed by a first network node (110) for determining a synchronized time reference in a wireless communications network (100) is provided. The first network node (110) determine a first timing reference (t3) by detecting a broadcasted time reference signal (S1). Also, the first network node (110) receive information indicating a first timing difference (?t21?22) between a second timing reference (t21) that is based on a detection of the broadcasted time reference signal (S1) at a second network node (111) and a third timing reference (t22) that is based on a positioning signal (S2) received by the second network node (111). Then, the first network node (110) determine a time reference for the first network node (110) based on the determined first timing reference (t3) and the received first timing difference (?t21?22). A first network node (110) for determining a timing reference in a wireless communications network (100) is also provided.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: April 19, 2022
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Junghoon Kim, Hyunsoo Kim, Mikael Olofsson
  • Patent number: 11294072
    Abstract: According to the present application, when an inter frequency bias (IFB) calibration value, which corresponds to a machine type ID of a reference station, is not stored in a storage, a processor executes a Real Time Kinematic (RTK) calculation by using reference station-positioning data and positioning terminal-positioning data, calculates a positioning solution, and causes the storage to store the reference station-positioning data and the positioning terminal-positioning data. The processor executes, after completing a positioning processing, an estimation processing of the IFB calibration value by using the reference station-positioning data and the positioning terminal-positioning data which are stored in the storage.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 5, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Yasuhisa Yamazaki
  • Patent number: 11271713
    Abstract: A method includes, at a first node: transmitting a first synchronization signal at a first time according to a first clock of the first node; back-coupling the first synchronization signal to generate a first self-receive signal; calculating a time-of-arrival of the first self-receive signal according to the first clock; and calculating a time-of-arrival of the second synchronization signal according to the first clock. The method also includes, at the second node: transmitting the second synchronization signal at a second time according to a second clock of the second node; back-coupling the second synchronization signal to generate a second self-receive signal; calculating a time-of-arrival of the second self-receive signal according to the second clock; and calculating a time-of-arrival of the first synchronization signal according to the second clock. The method S100 further includes calculating a time bias and a propagation delay between the pair of nodes based on the time-of-arrivals.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: March 8, 2022
    Assignee: ZaiNar, Inc.
    Inventors: Philip A. Kratz, Mainak Chowdhury, Alexander Hooshmand, Daniel M. Jacker
  • Patent number: 11239548
    Abstract: Various embodiments are described that relate to an antenna. In one embodiment, the antenna can be a low profile, multi-band (e.g., dual band), emulated GPS constellation antenna. In one embodiment, the antenna can form a cube with two open sides and four circuit board sides. The four circuit boards can include a first hardware portion that allows functioning in a higher frequency band and a second hardware portion that allows functioning in a lower frequency band.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: February 1, 2022
    Assignee: The Government of the United States, as represented by the Secretary of the Army
    Inventor: Emanuel Merulla
  • Patent number: 11233593
    Abstract: Architectures and techniques are presented that can provide point-to-point analysis to generate an improved signal strength prediction (SSP) based on, e.g., earth surface image data processing and analysis to draw conclusions of line of sight (LOS) along the propagation path between a BTS or another AP transmitter and CPE receiver. For example, USGS image data and/or elevation data of locations are identified to correspond to signal propagation between the transmitter and receiver can be analyzed for LOS signal quality at a fixed location, in addition to the statistical model prediction of the RF signal quality. As a result, foliage or terrain that obstructs the LOS can be identified and utilized to improve SSP by eliminating the additional pathloss due to LOS obstructions. Such can provide a significant improvement to SSP results that are conventionally predicted by statistical models rather than a point-to-point analysis.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: January 25, 2022
    Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLC
    Inventors: Zhen Wan, Xiaoyu Wang, Ravi Raina, Eric Antonio Alino, Zhefeng Li
  • Patent number: 11206056
    Abstract: Some embodiments of the present inventive concept provide a system for maintaining clock synchronization including an ultra-wideband (UWB) transmitting system and a UWB receiving system. The high precision input clock at the transmitting system produces a high precision clock frequency. A message is sent from the transmitting system including a transmit time of the message in UWB transmitter clock units. The message is received at the UWB receiving system at an arrival time in UWB receiver clock units. A time of flight (ToF) and an oscillator offset is calculated based on the transmit time included in the message and the arrival time. A tuning register uses the calculated oscillator adjustment to adjust the low precision resonator to synchronize the low precision resonator with the high precision input clock at the UWB transmitting system.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: December 21, 2021
    Assignee: Wiser Systems, Inc.
    Inventor: Seth Edward-Austin Hollar
  • Patent number: 11175413
    Abstract: Two wireless signals are received from transmitters in different locations transmitting at different frequencies. Phase information from the two signals is gathered for use in positioning and/or timing calculations. Calibration information is preferably also gathered to support the calculations. Information about the rate of change of phase may be gathered for use in velocity and timing drift calculations. The transmitters may be stations in a wireless infrastructure network. Assistance information may be gathered and shared to support the interception of uplink/downlink signals from the stations. Also disclosed are User Equipment, Base Stations, remote supporting services, elliptic hyperbolic relationships for interpreting and using the spatial variation of the phase difference, and positioning engines for use in the system.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: November 16, 2021
    Assignee: u-blox AG
    Inventors: Christopher Marshall, Marco Driusso
  • Patent number: 11057882
    Abstract: A system for dynamically setting a frame configuration in a wireless network in an emergency event includes an access node configured to deploy a first radio air interface. The system also includes a plurality of end-user wireless devices attached to the first radio air interface. The system further includes a processor configured to determine a trigger indicating the emergency event associated with one or more of the plurality of end-user wireless devices. The processor is also configured to switch the frame configuration for the access node from a first frame configuration to a second frame configuration, the second frame configuration including more uplink subframes than the first frame configuration.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: July 6, 2021
    Assignee: T-MOBILE INNOVATIONS LLC
    Inventors: Sreekar Marupaduga, Andrew M Wurtenberger, Rajveen Narendran
  • Patent number: 11026273
    Abstract: A mobile satellite communication gateway includes an aircraft communication interface and a satellite communication interface. The aircraft communication interface is designed to make a bidirectional data connection between the satellite communication gateway and a data network of an aircraft, while the satellite communication interface is designed to make a bidirectional data connection between the satellite communication gateway and a satellite communication network. The satellite communication gateway includes a signal processing device, which is coupled to the aircraft communication interface and the satellite communication interface and which is designed to interchange data between the data network of the aircraft and the satellite communication network.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: June 1, 2021
    Assignee: Airbus Operations GmbH
    Inventors: Christian Schaupmann, Johannes Hertel
  • Patent number: 11026192
    Abstract: The invention provides a system and method of identifying when a message is received at a control station from at least one device in a network having a plurality of devices, said method comprising the steps of receiving at the control station a low bandwidth signal from at least one device; obtaining a coarse timestamp estimate of when said low bandwidth signal is received by correlating with a pre-programmed signal template; generating a higher resolution correlation estimate by phase shifting the pre-programmed signal template and repeating the correlation; and detecting where the correlation is above a preselected value; and applying a curve fitting function about the higher resolution correlation estimate to obtain an accurate timestamp when the message was received.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: June 1, 2021
    Inventors: Thomas Farrell, Haris Kremo, Justin Tallon
  • Patent number: 10996681
    Abstract: In one embodiment, a system determines a difference in time between a local time source and a time of a GPS sensor. The system determines a max limit in difference and a max recovery increment or max recovery time interval for a smooth time source recovery. The system determines that the difference between the local time source and a time of the GPS sensor to be less than the max limit. The system plans a smooth recovery of the time source to converge the local time source to a time of the GPS sensor within the max recovery time interval. The system generates a timestamp based on the recovered time source to timestamp sensor data for a sensor unit of the ADV.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: May 4, 2021
    Assignee: BAIDU USA LLC
    Inventors: Oh Kwan, Manjiang Zhang, Xiangtao You, Tiffany Zhang, Xu Zhou
  • Patent number: 10992062
    Abstract: The embodiments disclose an antenna, an antenna array and a base station. The antenna includes two pairs of oscillator units that are orthogonal in polarization and have a same structure, each pair of oscillator units comprising a radiating portion and a feeding portion; the radiating portion includes a radiating substrate and two radiating bodies disposed on a surface of the radiating substrate; the radiating bodies are spaced apart from and symmetrical to each other, the feeding portion includes a feeding substrate, a ground disposed on a surface of one side of the feeding substrate and a microstrip disposed on a surface of the other side of the feeding substrate; the radiating substrate and the feeding substrate are perpendicular to and connected to each other, the ground is connected to the radiating bodies, and the microstrip line is spaced apart from and coupled to the radiating bodies.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: April 27, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Jianchuan Liu, Yuehua Yue
  • Patent number: 10955538
    Abstract: A positioning system according to an embodiment of the above description includes a transmitter including a first transmitting unit and a second transmitting unit for transmitting a first signal and a second signal having different velocities, respectively; and a receiver including: a first receiving unit and a second receiving unit for measuring each time of reception of the first signal and the second signal; and a position determining unit for measuring a location of the transmitter using a difference in reception time of the first signal and the second signal.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: March 23, 2021
    Assignee: UNIVERSITY OF ULSAN FOUNDATION FOR INDUSTRY COOPERATION
    Inventors: Sungoh Kwon, Baek Du Jo
  • Patent number: 10951257
    Abstract: A signal transceiver device includes a transceiver circuit, a switching circuit, a compensation circuit, and a calibration circuit. The transceiver circuit includes a transmitter and a receiver. The switching circuit has a first configuration and a second configuration, in which the transmitter is coupled to the receiver via the switching circuit. The compensation circuit analyzes an output of the receiver to obtain a first analyzed result and a second analyzed result, and generates first compensation coefficients and second compensation coefficients, in which the first analyzed result is corresponding to the first configuration, and the second analyzed result is corresponding to the second configuration. The calibration circuit calibrates the transmitter according to the first compensation coefficients, and calibrates the receiver according to the second compensation coefficients.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: March 16, 2021
    Assignee: Realtek Semiconductor Corporation
    Inventor: Tzu-Ming Kao
  • Patent number: 10942248
    Abstract: An example method includes receiving environmental data from a plurality of receivers; calculating, using a processor, an environmental offset based on the environmental data, wherein the environmental offset is operable to adjust a reference phase offset; and dynamically adjusting the environmental offset in response to a detected change in the environmental data.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: March 9, 2021
    Assignee: Zebra Technologies Corporation
    Inventors: Edward A. Richley, Belinda Turner, Chang Wang
  • Patent number: 10931345
    Abstract: Systems and methods for improving testing and/or calibration efficiency of radio frequency system. In some embodiments, a testing system includes a beamformer radio frequency system, in which the beamformer radio frequency system includes first transceiver circuitry and a first plurality of antennas coupled to the first transceiver circuitry, a beamformee radio frequency system, in which the beamformee radio frequency system includes second transceiver circuitry and a second plurality of antennas coupled to the second transceiver circuitry, one or more wired connections coupled between the first transceiver circuitry of the beamformer radio frequency system and the second transceiver circuitry of the beamformee radio frequency system, in which each of the one or more wired connections bypasses the first plurality of antennas of the first radio frequency system and the second plurality of antennas of the second radio frequency system.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: February 23, 2021
    Assignee: Apple Inc.
    Inventors: Mik VH Cohen, Ran Shimon, Shay Gershoni
  • Patent number: 10921418
    Abstract: Provided are a method and apparatus for location estimation of terminals in a wireless communication system. A method of operating a positioning apparatus may include (a) calculating distances between a terminal and first, second, and third base stations, (b) creating first, second, and third circles centered at locations of the first, second, and third base stations with radii corresponding to the distances, (c) calculating intersection distances between two intersections formed by the second circle, which is the smallest circle, and one of the first circle and the third circle and the other two intersections formed by the first circle and the third circle, and (d) determining one of the intersections corresponding to the shortest distance among the intersection distances as the terminal's location.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: February 16, 2021
    Assignee: Industry-Academic Cooperation Foundation, Chosun University
    Inventor: Suk Seung Hwang
  • Patent number: 10911211
    Abstract: A method includes, at a first node: transmitting a first calibration signal at a first time-of-departure measured by the first node; and transmitting a second calibration signal at a second time-of-departure measured by the first node. The method also includes, at a second node: receiving the first calibration signal at a first time-of-arrival measured by the second node; and receiving the second calibration signal at a second time-of-arrival measured by the second node. The method further includes: defining a first calibration point and a second calibration point in a set of calibration points, each calibration point comprising a time-of-departure and a time-of-arrival of each calibration signal; calculating a regression on the set of calibration points; and calculating a frequency offset between the first node and the second node based on the first regression.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: February 2, 2021
    Assignee: ZaiNar, Inc.
    Inventors: Philip A. Kratz, Daniel M. Jacker, Mainak Chowdhury, Alexander Hooshmand
  • Patent number: 10852423
    Abstract: Various embodiments are described that relate to wave transmission from a vehicle, and reception of a response to the transmitted wave. A vehicle wheel can include a sensor that transmits a radio wave in front of the vehicle. The radio wave can reflect off a non-uniformity, such as a speed bump or pothole, and be returned to the sensor. A controller can compare the transmitted wave against the returned wave to identify the existence of the non-uniformity.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: December 1, 2020
    Assignee: The Government of the United States, as represented by the Secretary of the Army
    Inventor: John Suarez
  • Patent number: 10820147
    Abstract: A mobile device, wireless network and their method of operation provide both on-line (connected) navigation operation, as well as off-line navigation from a local database within the mobile device. Routing according to the navigation system can be controlled by traffic congestion measurements made by the wireless network that allow the navigation system to select the optimum route based on expected trip duration.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: October 27, 2020
    Assignee: TRAXCELL TECHNOLOGIES, LLC
    Inventors: Mark Jefferson Reed, Stephen Michael Palik
  • Patent number: 10785607
    Abstract: Systems, methods, and instrumentalities are disclosed for processing a multi-level transmission sent on a common set of resources using superposition coding, comprising determining a first group radio network temporary identifier (GRNTI), wherein the GRNTI is associated with a broadcast transmission to a plurality of wireless transmit/receive units (WTRUs), determining a second GRNTI, wherein the second GRNTI is associated with a transmission to a subset of the plurality of WTRUs that received the first GRNTI, receiving the multi-level transmission, wherein the multi-level transmission comprises a first level message and a second level message, decoding the first level message from the multi-level transmission using the first GRNTI and preconfigured control information, and decoding the second level message from the multi-level transmission using the second GRNTI.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: September 22, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Anantharaman Balasubramanian, Ravikumar V. Pragada
  • Patent number: 10771120
    Abstract: Embodiments of the present disclosure describe systems, devices, and methods for preprocessing in a base station of a multiple-input multiple-output (MIMO) wireless system. In embodiments, remote radio unit (RRU) circuitry may control radio communication related to the MIMO wireless system, including applying a user equipment (UE)-specific spatial filter.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: September 8, 2020
    Assignee: Apple Inc.
    Inventors: Guangjie Li, Wenting Chang, Yushu Zhang
  • Patent number: 10755057
    Abstract: A system for managing kinematic assets is disclosed. In one embodiment, the system comprises an electronic identification device associated with an asset. The system further comprises a container comprising a reader disposed within the container for receiving a unique identification of the identification device. The container further comprises a reader node for maintaining an inventory record comprising the asset and for generating a report when the asset is not detected by said reader. The report further comprises a location of the container when said report is generated. The system further comprises a kinematic asset management platform comprising an asset registry for storing data conveyed by the report and a reports engine for generating a second report conveying the location of said container when the report is generated.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: August 25, 2020
    Assignee: Trimble Inc.
    Inventors: James C. Reynolds, Gary Dennis, Prakash Iyer
  • Patent number: 10716081
    Abstract: The invention relates to a receiving station (1x) of a system for processing signals originating from an emitter, comprising: a first receiver (3) configured to acquire signals from the emitter; and a second receiver (4) configured to acquire signals from a satellite navigation system. The station is characterised in that the first receiver (3) and the second receiver (4) are synchronised by the same local clock (6) generating a local time base, the acquired signals being dated by said time base.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: July 14, 2020
    Assignee: Zodiac Data Systems
    Inventors: Baptiste Guillot, Frederic Saffre, Yann Picard
  • Patent number: 10716193
    Abstract: The present disclosure provides an intelligent lighting control system. The lighting control system transmits a first wireless signal from a first light control module to a second light control module at a launch time. The first wireless signal is detected at the second light control module. A second wireless signal is transmitted from the second light control module to the first light control module in response to detecting receipt of the first wireless signal. The lighting control system detects receipt of the second wireless signal at the first light control module. A receipt time of the detection of the second wireless signal is recorded. The lighting control system determines a time of flight measured from the launch time to the receipt time.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: July 14, 2020
    Assignee: Racepoint Energy, LLC
    Inventor: William Lark, Jr.
  • Patent number: 10698074
    Abstract: The present invention relates to a system for locating a mobile element, characterized in that it comprises: at least one beacon emitting radio messages; at least one relay capable of emitting a second message with a known lag following the receipt of a first message originating from said at least one beacon; at least one sensor capable of measuring in a local time base the instants of arrival of the messages originating from said at least one beacon and at least one relay; at least one position computer, that can be central or onboard each sensor, capable of determining the position of a mobile element on the basis of the arrival time information; the mobile element being able to be a beacon, a relay or a sensor.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: June 30, 2020
    Assignee: Blinksight
    Inventors: Matthieu Mutz, St├ęphane Mutz
  • Patent number: 10690762
    Abstract: A method for determining a distance upper bound by a verifier device is described. The method includes measuring a first round-trip time to receive a first response from a target device corresponding to a first message sent to the target device. The method also includes measuring a second round-trip time to receive a second response from the target device corresponding to a second message sent to the target device, the second response being delayed by a processing time multiplier. The method further includes determining a transit time measurement based on the first round-trip time, the second round-trip time and the processing time multiplier. The method additionally includes determining the distance upper bound based on the transit time measurement.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: June 23, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: John Hillan, Jeremy Robin Christopher O'Donoghue, Stephen Frankland
  • Patent number: 10674526
    Abstract: Technology for a signal booster is disclosed. The signal booster can identify a current location of the signal booster. The signal booster can determine one or more bands in which signals are permitted to be boosted by the signal booster based on the current location of the signal booster. The signal booster can boost signals in the one or more bands that are permitted to be boosted by the signal booster for the current location of the signal booster.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: June 2, 2020
    Assignee: WILSON ELECTRONICS, LLC
    Inventors: Christopher Ken Ashworth, Patrick Lee Cook, Michael James Mouser
  • Patent number: 10643226
    Abstract: This disclosure relates to systems and methods that include configuring a machine learning system to train on a plurality of messages transmitted to target groups of an online social networking service, determining a threshold differential and a weight value using responses to the plurality of messages, and send the input message to the target in response to a differential between the expected number of positive responses and the weight multiplied by the expected number of negative responses being greater than the threshold differential.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: May 5, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Rupesh Gupta, Ravi Kiran Holur Vijay, Hsiao-Ping Tseng, Romer E. Rosales
  • Patent number: 10620297
    Abstract: Aspects of the present disclosure of may comprise an apparatus of a wireless device configurable for wireless communications and radar operations, the apparatus comprising memory. The apparatus may further comprise processing circuitry coupled to the memory, wherein when configured for the radar operations, the processing circuitry is configured to generate a plurality of scanning signals at different frequencies, configure a transceiver to transmit the scanning signals, configure the transceiver to detect radar return signals corresponding to the scanning signals, the radar return signals to be detected concurrently with transmission of the scanning signals, and configure a radar module to receive the scanning signals and the corresponding radar return signals and determine phase and gain differences between the scanning signals and the corresponding radar return signals.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: April 14, 2020
    Assignee: Apple Inc.
    Inventors: Alon Cohen, Yossi Tsfati, Igal Yehuda Kushnir, Noam Kogan
  • Patent number: 10613212
    Abstract: A method for Doppler-enhanced radar tracking includes: receiving a reflected probe signal at a radar array; calculating a target range from the reflected probe signal; calculating a first target angle from the reflected probe signal; calculating a target composite angle from the reflected probe signal; and calculating a three-dimensional position of the tracking target relative to the radar array from the target range, first target angle, and target composite angle.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: April 7, 2020
    Assignee: Oculii Corp.
    Inventors: Lang Hong, Steven Hong
  • Patent number: 10609762
    Abstract: Systems, methods, apparatuses, and computer readable media are disclosed for improving, in some examples, backhaul of sensor and other data to a real time location system (RTLS) network. In the context of a method for communication by a tag, the method includes receiving, at the tag, sensor data from at least one sensor, generating, using a processor of the tag, a tag blink data packet, the tag blink data packet including a tag identifier and at least a portion of the received sensor data, and transmitting the tag blink data packet.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: March 31, 2020
    Assignee: Zebra Technologies Corporation
    Inventors: John K. Hughes, James J. O'Hagan, Cynthia Traeger, Jill Stelfox, Bob Kuehne
  • Patent number: 10601489
    Abstract: In one implementation, a receiver has a module to detect a carrier within a portion of a digital representation of a received signal. In addition, the receiver includes a module to calculate the cross-correlation between the portion of the digital representation of the received signal and a reference signal representing an expected pulse pattern. The receiver also has a module to generate an estimate of a portion of a message potentially included in the digital representation of the received signal. The receiver further includes a screening module to generate a feature vector representing the estimated message, project the feature vector into a feature space, and determine the likelihood that the digital representation of the received signal includes a message. If the digital representation of the received signal likely includes a message, the receiver includes a non-coherent matched filter to recover the message from the digital representation of the received signal.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: March 24, 2020
    Assignee: Aireon LLC
    Inventor: Timothy Dyson