DOUBLE-DIFFERENTIAL ROUND TRIP TIME MEASUREMENT

    公开(公告)号:US20240012130A1

    公开(公告)日:2024-01-11

    申请号:US18253500

    申请日:2022-01-06

    CPC classification number: G01S13/74 G01S7/40 H04W64/00

    Abstract: In an aspect, a position estimation entity may obtain a first differential round trip time (RTT) measurement based on a first RTT measurement between a user equipment (UE) and a first wireless node and a second RTT measurement between the UE and a second wireless node, may obtain a second differential RTT measurement based on a third RTT measurement between a third wireless node and the first wireless node and a fourth RTT measurement between the third wireless node and the second wireless node, and may determine a positioning estimate of the UE based at least in part on the first differential RTT measurement and the second differential RTT measurement.

    METHOD AND APPARATUS TO DETERMINE RELATIVE LOCATION USING GNSS CARRIER PHASE

    公开(公告)号:US20230015003A1

    公开(公告)日:2023-01-19

    申请号:US17929262

    申请日:2022-09-01

    Abstract: Techniques are provided which may be implemented using various methods and/or apparatuses in a vehicle to determine location relative to a roadside unit (RSU) or other nearby point of reference. Vehicles within a pre-designated range or within broadcast distance or otherwise geographically proximate to a roadside unit, through the use of broadcast or other messages sent by the vehicles and/or the RSU may share carrier GNSS phase measurement data, wherein the shared GNSS carrier phase measurement data may be utilized to control and coordinate vehicle movements, velocity and/or position by the RSU and/or to determine location of each vehicle relative to the RSU and/or to other vehicles or determine the absolute location of each vehicle. An RSU may coordinate vehicle access to an intersection, manage vehicle speeds and coordinate or control vehicle actions such as slowing, stopping, and changing lanes or sending a vehicle to a particular location.

    ULTRA WIDE-LANE (UWL) REAL-TIME KINEMATIC (RTK) POSITIONING

    公开(公告)号:US20220373696A1

    公开(公告)日:2022-11-24

    申请号:US17313486

    申请日:2021-05-06

    Abstract: Techniques for Ultra Wide-Lane (UWL) Real-Time Kinematic (RTK) positioning a mobile device may include obtaining, using a multi-band GNSS receiver of the mobile device: a first carrier-phase measurement of a first GNSS signal on a first GNSS carrier frequency, and a second carrier-phase measurement of a second GNSS signal on second GNSS carrier frequency. Techniques may further comprise providing a position estimate of the mobile device, wherein: the position estimate is determined from a wide-lane (WL) combination of the first carrier-phase measurement and the second carrier-phase measurement, and the WL combination has a combined carrier phase noise that is less than a pseudo-range noise of the first carrier-phase measurement and a pseudo-range noise of the second carrier-phase measurement.

    METHODS AND APPARATUS TO SWITCH BETWEEN WIRELESS NETWORKS

    公开(公告)号:US20220256631A1

    公开(公告)日:2022-08-11

    申请号:US17666375

    申请日:2022-02-07

    Abstract: Techniques are provided for selecting cellular and satellite networks. An example method for switching between communication networks includes receiving one or more signals via a first wireless communication network with a mobile device, determining a second wireless communication network is available based at least in part on a location of the mobile device and a time, detaching the mobile device from the first wireless communication network at the time if the second wireless communication network is available, and receiving one or more signals from the second wireless communication network with the mobile device after the time.

    METHOD AND APPARATUS TO DETERMINE RELATIVE LOCATION USING GNSS CARRIER PHASE

    公开(公告)号:US20210263166A1

    公开(公告)日:2021-08-26

    申请号:US16797381

    申请日:2020-02-21

    Abstract: Techniques are provided which may be implemented using various methods and/or apparatuses in a vehicle to determine location relative to a roadside unit (RSU) or other nearby point of reference. Vehicles within a pre-designated range or within broadcast distance or otherwise geographically proximate to a roadside unit, through the use of broadcast or other messages sent by the vehicles and/or the RSU may share carrier GNSS phase measurement data, wherein the shared GNSS carrier phase measurement data may be utilized to control and coordinate vehicle movements, velocity and/or position by the RSU and/or to determine location of each vehicle relative to the RSU and/or to other vehicles or determine the absolute location of each vehicle. An RSU may coordinate vehicle access to an intersection, manage vehicle speeds and coordinate or control vehicle actions such as slowing, stopping, and changing lanes or sending a vehicle to a particular location.

    ATMOSPHERIC DELAY CORRECTION FOR NON-TERRESTRIAL NETWORK NODES

    公开(公告)号:US20250164645A1

    公开(公告)日:2025-05-22

    申请号:US18518390

    申请日:2023-11-22

    Abstract: A user equipment (UE) may receive a set of reference signals (RSs) from a set of non-terrestrial network (NTN) nodes. The set of RSs may travel from the set of NTN nodes to the UE through a first portion of an atmosphere and a second portion of the atmosphere. The UE may measure the set of RSs. The UE may calculate, based on the measured set of RSs, a first set of atmospheric delays associated with the first portion of the atmosphere and a second set of atmospheric delays associated with the second portion of the atmosphere. The UE may calculate a location of the UE based on the measured set of RSs, the first set of atmospheric delays, and the second set of atmospheric delays. The UE may transmit the calculated location of the UE. The first portion may include an ionosphere. The second portion may include a troposphere.

    SERVER-BASED STATE SPACE REPRESENTATION (SSR) SERVICE ENHANCEMENT FOR REAL-TIME KINEMATIC (RTK) OR PRECISE POINT POSITIONING (PPP)

    公开(公告)号:US20250093519A1

    公开(公告)日:2025-03-20

    申请号:US18468595

    申请日:2023-09-15

    Abstract: An example method for updating GNSS error correction data for global navigation satellite system (GNSS)-based positioning. The method performed by a server may comprise obtaining multiple GNSS measurements crowdsourced from one or more GNSS devices across a plurality of measurement epochs, determining GNSS measurement residuals using the multiple GNSS measurements and existing GNSS error correction data, and sending updated GNSS error correction data for GNSS-based positioning, wherein the updated GNSS error correction data is determined using the determined GNSS measurement residuals and the existing GNSS error correction data.

    MOBILE REAL TIME KINEMATIC (RTK) / PRECISE POINT POSITIONING (PPP) ENHANCEMENT WITH ANTENNA PCO/PCV COMPENSATION

    公开(公告)号:US20240418871A1

    公开(公告)日:2024-12-19

    申请号:US18334270

    申请日:2023-06-13

    Abstract: Techniques for global navigation satellite system (GNSS)-based positioning of a mobile device based on antenna phase center compensation are disclosed. The techniques can include determining a phase center profile of a receiver antenna of the mobile device that is placed in a fixed-frame condition and executing an antenna phase center compensation procedure upon detecting placement of the mobile device in a non-fixed frame condition. The antenna phase center compensation procedure can include obtaining attitude information of the mobile device based at least in part on sensor data obtained from one or more sensors of the mobile device, and incorporating the attitude information of the mobile device into the phase center profile of the receiver antenna of the mobile device. A global navigation satellite system-based positioning operation may be executed that includes antenna phase center compensation based at least in part on incorporating the attitude information into the phase center profile.

    USING LIGHT AND SHADOW IN VISION-AIDED PRECISE POSITIONING

    公开(公告)号:US20240404098A1

    公开(公告)日:2024-12-05

    申请号:US18328404

    申请日:2023-06-02

    Abstract: Aspects presented herein may improve/enhance camera-aided/assisted positioning by utilizing light and shadow created by an artificial light. In one aspect, a UE captures a set of images of an object using at least one camera. The UE estimates a direction of at least one light source based on a shadow of the object in the set of images, wherein the shadow of the object is created by the at least one light source. The UE calculates at least one of (1) a distance (d) between the at least one camera and a set of first features associated with the object based on the estimated direction of the at least one light source or (2) directional information of a set of second features associated with a surrounding environment that is within a threshold distance of the object.

    POSITION REPORT AUTHENTICATION
    50.
    发明申请

    公开(公告)号:US20240380584A1

    公开(公告)日:2024-11-14

    申请号:US18316982

    申请日:2023-05-12

    Abstract: An example method of position information authentication for a location application performed by a UE, the method comprising determining by a position engine, a position estimate of the UE and determining by the position engine, a position report message indicating the position estimate. The method also comprises determining by a security module, a digital signature generated using a first private key known to the UE and the position report message. The method further comprises transmitting the position report message associated with the digital signature to a location application executed by the UE or another device, wherein the location application is configured to provide one or more location-based services to the UE using the position estimate responsive to a successful authentication of the position report message using the digital signature generated based on the first private key.

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