知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

689 records (took 0.026 seconds)

    Time-of-arrival-based method for range-based filtering
    12.
    发明授权
    Time-of-arrival-based method for range-based filtering 有权

    公开(公告)号：US11802950B2

    公开(公告)日：2023-10-31

    申请号：US17637007

    申请日：2020-08-18

    Applicant: Nokia Technologies Oy

    Inventor： Fabian Wiacek

    IPC: G01S11/02

    CPC classification number: G01S11/02

    Abstract: A disclosed method includes receiving a time-of-arrival range filter configuration and a reference signal physical transmission time from a network node at a reference signal physical reception time. The time-of-arrival range filter configuration includes at least one of a time-of-arrival filter status, a time-of-arrival filter distance range, and a time-of-arrival configuration. A time difference between the reference signal physical reception time and the reference signal physical transmission time is determined, and a distance to the network node based on the time difference is calculated. Whether the distance is within the time-of-arrival filter distance range is determined, and the time-of-arrival filter status is determined. Based on the time-of-arrival filter status, actions are performed in accordance with the time-of-arrival configuration applicable for the distance.

    Add-on module for a device, server unit, localization method, computer program, and corresponding storage medium
    13.
    发明授权
    Add-on module for a device, server unit, localization method, computer program, and corresponding storage medium 有权

    公开(公告)号：US11774568B2

    公开(公告)日：2023-10-03

    申请号：US16863248

    申请日：2020-04-30

    Applicant: Siemens Healthcare GmbH

    Inventor： Quoc-Viet Nguyen

    IPC: G01S11/02 ,  G01R29/08

    CPC classification number: G01S11/02 ,  G01R29/0807

    Abstract: An apparatus or an add-on module for a, in particular mobile, device, is disclosed. In an embodiment, the device to be localized or the add-on module uses a measuring unit to measure, via suitable sensors, a local electromagnetic field distribution generated by a given infrastructure. An instantaneous position of the add-on module or of the device equipped therewith is then determined by comparing the measured field distribution with a specified map. In order to facilitate tracking of the add-on module or of the device, the measured field distribution and/or the determined position can be sent via a wireless data connection to a server unit.

    Adjusting DFT coefficients to compensate for frequency offset during a sounding sequence used for fractional time determination
    16.
    发明授权
    Adjusting DFT coefficients to compensate for frequency offset during a sounding sequence used for fractional time determination 有权

    公开(公告)号：US11638116B2

    公开(公告)日：2023-04-25

    申请号：US17108908

    申请日：2020-12-01

    Applicant: Silicon Laboratories Inc.

    Inventor： Wentao Li ,  Yan Zhou ,  Michael A. Wu

    IPC: H04W4/02 ,  G01R23/175 ,  H04L43/0852 ,  G01S11/02

    Abstract: A receiver includes a first discrete Fourier transform (DFT) block to perform a first single tone DFT on a positive tone associated with a sounding sequence. A second DFT block performs a second single tone DFT on a negative tone associated with the sounding sequence. A DFT coefficient generation block generates first DFT coefficients based on a nominal frequency of the positive tone and an estimated frequency offset between a transmitter frequency and a receiver frequency. The DFT coefficient generation block generates second DFT coefficients based on a nominal frequency of the negative tone and the estimated frequency offset. Multipliers in the DFT blocks multiply I and Q values of the sounding sequence with the coefficients. Accumulators in the DFT blocks accumulate multiplier outputs. An arctan function receives averaged accumulated values from the first and second DFT blocks and supplies first and second phase values used to calculate fractional timing.

    Round trip phase extended range
    19.
    发明授权
    Round trip phase extended range 有权

    公开(公告)号：US11555932B2

    公开(公告)日：2023-01-17

    申请号：US16667515

    申请日：2019-10-29

    Applicant: QUALCOMM Incorporated

    Inventor： Paul Dominic Hiscock ,  Thomas Allan

    IPC: G01S19/44 ,  H04W4/80 ,  G01S13/84 ,  G01S19/04 ,  H04W4/02 ,  G01S11/02 ,  G01S11/06

    Abstract: Secure range estimates as described herein may include determining a range estimate between two Bluetooth enabled devices based, at least in part, on round trip phase measurements of wireless signals transmitted between the devices. In one example, a range estimate may include determining a first set of relative carrier measurements at a first set of frequencies, determining a second set of relative carrier measurements based on the first set at the second set of frequencies; and combining the first set and the second set to estimate a distance between the devices.

Patent Agency Ranking