Secure global navigation satellite systems

    公开(公告)号:US12235364B2

    公开(公告)日:2025-02-25

    申请号:US17523768

    申请日:2021-11-10

    Abstract: Apparatuses and methods of securing Global Navigation Satellite Systems are disclosure. In one exemplary embodiment, a mobile device may comprise: a communication interface configured to monitor signals from a plurality of satellites, a processor configured to determine impairment of one or more satellites in the plurality of satellites using the signals form the plurality of satellites, a memory configured to store a status of the determined impairment of one or more satellites in the plurality of satellites, and the communication interface that transmits the status of the determined impairment of the one or more satellites in the plurality of satellites to a server. The processor further determines a position of the mobile device using the status of the determined impairment of one or more satellites in the plurality of satellites, and stores the determined position and a corresponding digital certificate indicative of authenticity of the determined position in a memory.

    Method, system and communication device for determining a position of the device

    公开(公告)号:US12228668B2

    公开(公告)日:2025-02-18

    申请号:US17762114

    申请日:2019-09-24

    Abstract: A method performed by a system (120) for determining a position of a device (140) connected to a communication network (100) is disclosed. The method comprises obtaining a geographical area for the device based on a first position-estimation service, obtaining information on luminosity on the device over a time period, and determining a second position estimation for the device (140) based on the geographical area and on the information on luminosity, by comparing the information on luminosity over the time period to a 3D model of the geographical area, the 3D model comprising models of 3D objects of the geographical area and a model of sunlight shining onto the models of the 3D objects over the time period. Disclosed is further a corresponding system and a position-determining method performed by a communication device.

    Shopping cart self-tracking in an indoor environment

    公开(公告)号:US12227219B2

    公开(公告)日:2025-02-18

    申请号:US17873526

    申请日:2022-07-26

    Applicant: Maplebear Inc.

    Abstract: A shopping cart's tracking system determines a first baseline location of the shopping cart at a first timestamp with a wireless device located on the shopping cart detecting one or more external wireless devices (e.g., RFID tags) in the indoor environment. The shopping cart's tracking system receives wheel motion data from one or more wheel sensors coupled to one or more wheels of the shopping cart, wherein the wheel motion data describes rotation of the one or more wheels. The shopping cart's tracking system calculates a translation traveled by the shopping cart from the first baseline location based on the wheel motion data. The shopping cart's tracking system determines an estimated location of the shopping cart at a second timestamp based on the first baseline location and the translation. With the estimated location, the shopping cart can update a map with the estimated location of the shopping cart.

    Positioning information processing method and apparatus, and storage medium

    公开(公告)号:US12222431B2

    公开(公告)日:2025-02-11

    申请号:US17904126

    申请日:2021-01-28

    Abstract: A method and apparatus for processing location information and a non-transitory computer-readable storage medium are disclosed. The method may include: transmitting, by a location management function (LMF) server, location request information to a serving cell of a terminal device, the location request information at least comprising sounding reference signal (SRS) configuration recommendation information; receiving, by the LMF server, location response information transmitted by the serving cell, the location response information at least comprising SRS configuration determination information; and transmitting, by the LMF server, measurement request information to a transmission receive point (TRP), the measurement request information comprising the SRS configuration determination information.

    Systems and methods for supporting a location uncertainty for a scheduled location

    公开(公告)号:US12207160B2

    公开(公告)日:2025-01-21

    申请号:US17739132

    申请日:2022-05-08

    Abstract: The location of a user equipment (UE) is determined at a scheduled location time based on location measurements for the UE received from one or more other entities. The location measurements are obtained at a plurality of times based on the scheduled location time. An uncertainty of the location that indicates a difference between the location and an actual location of the UE at the scheduled location time is determined and the location and the uncertainty of the location are sent to a requesting entity. The uncertainty of the location is based on a location uncertainty and a time uncertainty relative to the scheduled location time, which are combined into a single location uncertainty.

    Location estimation apparatus, location estimation method, and program for location estimation

    公开(公告)号:US12204041B2

    公开(公告)日:2025-01-21

    申请号:US17898426

    申请日:2022-08-29

    Inventor: Fumiaki Miyake

    Abstract: A location information server includes: an acquisition unit configured to acquire received signal strengths of radio signals transmitted from a transmitter and received at a receiver; an estimation unit configured to estimate a location of the transmitter or receiver, using at least the top three received signal strengths among the acquired received signal strengths; and a reliability calculation unit configured to calculate a reliability of the location estimation based on the received signal strengths that have been used.

    SYSTEM AND METHOD FOR POSITION ESTIMATION AND DIRECTION RECOGNITION BETWEEN OBJECTS THROUGH C-ITS LINKAGE IN V2X COMMUNICATION ENVIRONMENT

    公开(公告)号:US20250020754A1

    公开(公告)日:2025-01-16

    申请号:US18734485

    申请日:2024-06-05

    Abstract: Proposed are a system and a method for position estimation and direction recognition between objects through a cooperative intelligent transport systems (C-ITS) linkage in a vehicle to everything (V2X) communication environment. The system may include an infrastructure information receiver configured to receive infrastructure information from an infrastructure, and an object position determination processor configured to determine a position of equipment in use. The system may also include an object position and path prediction processor configured to predict a future position and a movement path of the equipment in use and an object information transceiver configured to exchange information on the equipment with another object. The system may further include an object and surrounding situation recognition and determination processor configured to recognize an object and a surrounding situation and determine whether a dangerous situation exists by using information acquired through the C-ITS linkage.

Patent Agency Ranking