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US 10,708,878 B2Granted
Supporting a secure terrestrial transmitter based positioning
AssigneeHERE Global B.V.
InventorsNicolas Neubauer, David Falla Cepeda
Life of this patent
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AssigneeHERE Global B.V.
InventorsNicolas Neubauer, David Falla Cepeda
Estimating the term…
A device with transmitter broadcasts packets including a transmitter identifier via a radio interface with varying timings of transmissions. It determines a current timing of transmissions based on clock signals and a secret code, using a cryptographic function. A mobile device detects radio signals conveying such packets and performs measurements on the signals. It determines a currently used timing of transmissions, assembles a positioning request including the transmitter identifier, results of the measurements and an indication of the timing of transmissions, and transmits the request. A server receives the request. It generates for the transmitter an expected timing of transmissions using a cryptographic function, based on a signal of a master clock and based on a stored secret code assigned to the transmitter. It provides position information as trusted position information only in the case of a match between the indicated and the expected timing of transmissions.
A method performed by a mobile device, the method comprising:
An apparatus comprising at least one processor and at least one memory, wherein the at least one memory includes computer program code, the computer program code being executable by the at least one processor to cause a mobile device to perform operations comprising:
A method comprising:
Dependencies are inferred from the claim text.