Determining time calibration value for user equipment
A technology for time calibration and user equipment, applied in positioning, location information-based services, satellite radio beacon positioning systems, etc., can solve problems such as high cost and slow down manufacturing process
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[0098] o Example #2: In a point-of-sale (POS) transaction, UE 100 can connect to a POS terminal via a local short-range connection, where the POS terminal location is precisely known;
[0099] o Example #3: The UE 100 uses the camera to scan a nearby QR code. A QR code may map directly to an associated location, or may be some type of device identifier that can be used to look up an associated location; and / or
[0100] • The UE 100 determines its position based on a Pedestrian Dead Reckoning (PDR) system in an indoor environment.
[0101] UE 100 then estimates its time alignment value 1015A (e.g., similar to Figure 6 615). In an example, the estimate of 1015A can be calculated based on Equation 5 as shown below:
[0102] Time calibration value = TOAmeas-(||UEloc-antennaloc||+FLC)
[0103] Equation 5
[0104] where TOAmeas represents the mean value of TOA measured at 1005A, UEloc represents the non-STPS and non-GNSS UE position estimate from 1010A, antennaloc represents t...
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