US 12,442,933 B2 · GNSS data in non-terrestrial network system information

Abstract

According to certain embodiments, a method performed by a wireless device comprises receiving Assisted-Global Navigation Satellite System (A-GNSS) information in system information broadcast by a network, receiving signals from a set of GNSS satellites (the set of GNSS satellites comprises at least three GNSS satellites), and determining a location of the wireless device using the A-GNSS information and information received in the signals from the set of GNSS satellites. The method further comprises determining Doppler time and frequency offsets compared to a network satellite. The Doppler time and frequency offsets are determined based on the location of the wireless device. The method further comprises initiating a connection process with the network satellite by transmitting a random access signal with pre-compensated time and frequency, the pre-compensated time and frequency based on the determined Doppler time and frequency offsets.

Claims14

Dependent claims

A method performed by a wireless device, the method comprising:

receiving Assisted-Global Navigation Satellite System (A-GNSS) information, the A-GNSS information received in system information broadcast by a network via a Third Generation Partnership Project (3GPP) wireless signal;
receiving signals from a set of GNSS satellites, the set of GNSS satellites comprising at least three GNSS satellites;
determining how long the A-GNSS information is valid;
determining a location of the wireless device using the A-GNSS information and information received in the signals from the set of GNSS satellites, wherein the A-GNSS information is used while the A-GNSS information is valid;
determining Doppler time and frequency offsets compared to a network satellite, the Doppler time and frequency offsets determined based on the location of the wireless device;
and
initiating a connection process with the network satellite by transmitting a random access signal with pre-compensated time and frequency, the pre-compensated time and frequency based on the determined Doppler time and frequency offsets.

4 more elements

A wireless device, the wireless device comprising:

power supply circuitry configured to supply power to the wireless device;
and
processing circuitry configured to:
receive Assisted-Global Navigation Satellite System (A-GNSS) information, the A-GNSS information received in system information broadcast by a network via a Third Generation Partnership Project (3GPP) wireless signal;
receive signals from a set of GNSS satellites, the set of GNSS satellites comprising at least three GNSS satellites;
determine how long the A-GNSS information is valid;
determine a location of the wireless device using the A-GNSS information and information received in the signals from the set of GNSS satellites, wherein the A-GNSS information is used while the A-GNSS information is valid;
determine Doppler time and frequency offsets compared to a network satellite, the Doppler time and frequency offsets determined based on the location of the wireless device;
and
initiate a connection process with the network satellite by transmitting a random access signal with pre-compensated time and frequency, the pre-compensated time and frequency based on the determined Doppler time and frequency offsets.

7 more elements

Dependencies are inferred from the claim text.

GNSS data in non-terrestrial network system information

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GNSS data in non-terrestrial network system information

Life of this patent

Abstract

Claims14