Iso-chronic Type Patents (Class 342/387)
  • 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: 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: 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: 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
  • Patent number: 10578704
    Abstract: A method and system determine a location of a signal emitter. A plurality of sensors each receives a signal transmitted by the signal emitter. One of the received signals is processed to produce a template describing an estimate of the signal transmitted by the signal emitter. The template is cross-correlated with at least some of the signals received at the sensors. At least one cross-correlation feature is identified from each cross-correlation and the cross-correlation features are used to determine the location of the signal emitter.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: March 3, 2020
    Assignee: Keysight Technologies, Inc.
    Inventors: Andrew D. Fernandez, Lawrence Dale Bennett
  • Patent number: 10567034
    Abstract: Embodiments enable communicating Ultra Wideband (UWB) devices to collaborate by exchanging pulse shape information. The UWB devices use the pulse shape information to improve ranging accuracy. The improved ranging accuracy can be used in complex multipath environments where advanced estimation schemes are used to extract an arriving path for time-of-flight estimation. To determine the pulse shape information to be shared, some embodiments include determining location information of a UWB device and selecting the pulse shape information that satisfies regional aspects. The pulse shape information includes a time-zero index specific to a ranging signal that is used by UWB receivers to establish timestamps time-of-flight calculations. Some embodiments include measuring performance characteristics and selecting different pulse shape information based on the performance characteristics for improved accuracy.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: February 18, 2020
    Assignee: Apple Inc.
    Inventors: Joachim S. Hammerschmidt, Eren Sasoglu
  • Patent number: 10557914
    Abstract: A radio wave arrival angle detection device of the present invention extracts symbols and resolves the same into sub-carriers having various frequency components, for OFDM carrier waves received by a first antenna and a second antenna, respectively. The arrival angle of the carrier waves is calculated on the basis of the geometric relationship between a phase shift of the respective sub-carriers of the OFDM carrier waves received by the first antenna and the second antenna, and the arrangement of the first antenna and the second antenna.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: February 11, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES MACHINERY SYSTEMS, LTD.
    Inventors: Kenji Iizuka, Masatoshi Tominaga, Kazuyoshi Kitajima, Saku Ieuji
  • Patent number: 10555235
    Abstract: A device, computer-readable medium, and method for activating antennas based upon a location and a movement of a group of mobile endpoint devices are disclosed. For example, a method may include a processor of a cellular network detecting a group of mobile endpoint devices associated with a first location and activating a first antenna at a first cell site of the cellular network associated with the first location, in response to detecting the group of mobile endpoint devices. The processor may further detect a movement of the group of mobile endpoint devices toward a second location, and activate a second antenna at a second cell site of the cellular network associated with the second location and deactivate the first antenna, in response to detecting the movement of the group of mobile endpoint devices toward the second location.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: February 4, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Moshiur Rahman
  • Patent number: 10520582
    Abstract: An disclosed method includes receiving, from receivers, TOA data associated with location tag transmissions; determining a first set of the receivers based on the received TOA data; calculating a first tag location estimate for the first set of the receivers by applying a minimizing function to a first set of the TOA data corresponding to the first set of the receivers; determining a first data quality indicator (DQI) for the first tag location estimate; and when the first DQI for the first tag location estimate does not meet a threshold: determining, for the first set of the TOA data, impacts of respective delays on the minimizing function; determining, based on the impacts of the respective delays on the minimizing function, a second set the receivers different from the first set of the receivers; and calculating a second tag location estimate for the second set of the receivers.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: December 31, 2019
    Assignee: Zebra Technologies Corporation
    Inventors: Edward A. Richley, Belinda Turner, Chang Wang
  • Patent number: 10520606
    Abstract: Method and apparatus for receiving an estimate of time in a satellite signal receiver receives an estimate of time from a server and compensates for error of a clock in the satellite signal receiver using the estimate of time. The output of the compensated clock is used when computing a position of the satellite signal receiver. The estimate of time is received using a network time protocol (NTP), a simple network time protocol (SNTP), or by one-way broadcast from the server.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: December 31, 2019
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Charles Abraham, Sergei Podshivalov, Frank van Diggelen
  • Patent number: 10506483
    Abstract: A satellite system may have a constellation of communications satellites that provides services to users with user devices such as portable electronic devices and home and office equipment. The constellation of satellites may include low-earth orbit satellites or other non-geostationary satellites having coverage areas that move across the surface of the Earth as the satellites orbit the Earth. The system may have gateways that communicate with the user devices as satellites move into and out of range. Computing equipment at a gateway or associated metropolitan point of presence may direct the gateways to handover communications sessions with the user devices from an outgoing satellite to an incoming satellite. Handover operations may involve handovers in prioritized batches, make-before-break handover procedures, and break-before-make handover procedures.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 10, 2019
    Inventors: Keith Williamson, James Scott
  • Patent number: 10490074
    Abstract: Various aspects related to frequency biasing to compensate for frequency variations caused by Doppler shift in V2V communication systems are described. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus, e.g., a UE, may be configured to determine a velocity of the apparatus, and determine a frequency biasing adjustment based on the determined velocity of the apparatus. The apparatus may be further configured to communicate with UE based on an adjusted carrier frequency determined based on a carrier frequency and the determined frequency biasing adjustment. In some configurations, a driving environment of the apparatus maybe considered, and the frequency biasing adjustment is determined further based on the determined driving environment.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: November 26, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Libin Jiang, Shailesh Patil, Peter Gaal, Durga Prasad Malladi
  • Patent number: 10467442
    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: July 31, 2018
    Date of Patent: November 5, 2019
    Assignee: Timble Inc.
    Inventors: James C. Reynolds, Gary Dennis, Prakash Iyer
  • Patent number: 10419884
    Abstract: Methods and apparatus for reference regeneration in real time location systems are disclosed. An example disclosed method includes obtaining reference phase offsets from a plurality of radio frequency identification (RFID) receivers; transmitting a first synchronization signal via a wireline link to obtain differential wireline coarse sync measurements; determining a residual offset table based at least in part on the differential wireline coarse sync measurements and the reference phase offsets; transmitting a second synchronization signal via the wireline link to obtain revised differential wireline coarse sync measurements; generating revised reference phase offsets by combining the revised differential wireline coarse sync offsets with the residual offset table; and determining a physical location of a RFID tag based at least in part on i) the revised reference phase offsets and ii) RFID receiver clock measurements corresponding to a time-of-arrival of over-the-air data transmitted from the RFID tag.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: September 17, 2019
    Assignee: Zebra Technologies Corporation
    Inventors: Alexander Mueggenborg, Edward A. Richley, Aitan Ameti
  • Patent number: 10408917
    Abstract: Systems and methods for locating a position of a target object are provided. The target object can be equipped with a plurality of spatially distributed antennas, and can be located within a network of a plurality of anchors at fixed locations. A plurality of anchor pairs can be assigned. Each anchor pair can include at least two anchors. The anchor pairs can transmit and receive range request (REQ) and range response (RSP) packets. The REQ and RSP packets can be received by the antennas on the target object. Distance differences between the target object to the first anchor and from the target object to the second anchor of each anchor pair can be estimated, based on times at which the REQ packet and the RSP packet are received at the target object. The position of the target object can be estimated based on the distance differences.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: September 10, 2019
    Assignee: Red Point Positioning Corporation
    Inventors: Zhenzhen Ye, Chunjie Duan, Georgiy Pekhteryev
  • Patent number: 10395537
    Abstract: Aspects herein describe techniques for synchronizing clocks between two moving platforms using optical signals generated from lasers to measure clock offsets and determine a separation distance between moving platforms. Once the clocks are synchronized (e.g., an offset between the clocks is determined), the moving platforms can share sensor data, location data, and other information which is dependent on accurate timestamps and relative positions. In one aspect, one of the platforms serves as a virtual mirror. That is, the platform transmits a pulse at the same instance a pulse is received, similar to a mirror that reflects incident light. For example, the first platform may transmit pulses which are received at the second platform. The second platform can use optical or electrical components to form the virtual mirror that transmits an optical pulse to the first platform each time a pulse is received at the second platform.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: August 27, 2019
    Assignee: THE BOEING COMPANY
    Inventor: Glenn S. Bushnell
  • Patent number: 10371789
    Abstract: A mobile station transmits a first radio signal, a reference station transmits a second radio signal. Fixed stations extract phase differences (??mf1) to (??mf3), respectively, between a carrier included in the first radio signal and reference clocks of the respective fixed stations. The fixed stations extract phase differences (??sf1) to (??sf3), respectively, between a carrier included in the second radio signal and the reference clocks of the respective fixed stations. A server cancels phase offsets (?f1) to (?f3) of the respective fixed stations using phase difference information between the mobile station and each of the fixed stations and phase difference information between the reference station and each of the fixed stations, obtains distance information between each of the fixed stations and the mobile station, and calculates a position of the mobile station.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: August 6, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Koichi Takizawa
  • Patent number: 10267895
    Abstract: Various technologies for identifying RF emitters in geolocation datasets are described herein. Doppler signatures of RF emitters and geolocation data of objects in a scene are collected simultaneously, then range-rate profiles of the movement of the RF emitters and the objects in the scene are computed. An RF emitter is identified in a geolocation dataset by comparing the motion of the RF emitter with the motion of an object in the scene as described by the respective range-rate profiles.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: April 23, 2019
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Richard M. Naething, Richard C. Ormesher