17757931. POSITIONING REFERENCE SIGNAL REPETITION DURATION FOR NON-TERRESTRIAL NETWORKS simplified abstract (QUALCOMM Incorporated)
POSITIONING REFERENCE SIGNAL REPETITION DURATION FOR NON-TERRESTRIAL NETWORKS
Organization Name
Inventor(s)
Xiao Feng Wang of San Diego CA (US)
Iyab Issam Sakhnini of San Diego CA (US)
Dan Zhang of San Diego CA (US)
POSITIONING REFERENCE SIGNAL REPETITION DURATION FOR NON-TERRESTRIAL NETWORKS - A simplified explanation of the abstract
This abstract first appeared for US patent application 17757931 titled 'POSITIONING REFERENCE SIGNAL REPETITION DURATION FOR NON-TERRESTRIAL NETWORKS
Simplified Explanation
The patent application describes techniques for positioning using time of arrival (ToA) measurements of positioning reference signals (PRS) transmitted by different transmitters. The observed time difference of arrival (OTDOA) is calculated as the difference between the ToA of the PRS transmissions from the first and second transmitters. The OTDOA is limited to be less than half the maximum expected delay between the PRS transmissions. The repetition duration of the PRS sequences is required to be greater than 10 milliseconds (ms) and at least twice the maximum expected delay.
- Techniques for positioning using time of arrival (ToA) measurements of positioning reference signals (PRS) transmitted by different transmitters.
- Calculation of observed time difference of arrival (OTDOA) as the difference between the ToA of the PRS transmissions from the first and second transmitters.
- Limiting the OTDOA to be less than half the maximum expected delay between the PRS transmissions.
- Requirement of a repetition duration of the PRS sequences to be greater than 10 milliseconds (ms) and at least twice the maximum expected delay.
Potential Applications
- Location-based services
- Navigation systems
- Asset tracking
- Emergency services
Problems Solved
- Accurate positioning in areas with multiple transmitters
- Mitigating the effects of signal delays and interference
- Improving the reliability and precision of positioning systems
Benefits
- Enhanced accuracy in determining the position of a receiver
- Improved performance in challenging environments with multiple transmitters
- Increased reliability and robustness of positioning systems
Original Abstract Submitted
Disclosed are techniques for positioning. A receiver measures a time of arrival (ToA) of a positioning reference signal (PRS) transmission of a first PRS sequence transmitted by a first transmitter, measures a ToA of a PRS transmission of a second PRS sequence transmitted by a second transmitter, and determines an observed time difference of arrival (OTDOA) as a difference between the ToA of the PRS transmission of the first PRS sequence and the ToA of the PRS transmission of the second PRS sequence, wherein the OTDOA is less than half a maximum differential delay expected between the PRS transmission of the first PRS sequence and the PRS transmission of the second PRS sequence, and wherein a repetition duration of the first PRS sequence and the second PRS sequence is greater than 10 milliseconds (ms) and at least twice the maximum differential delay.
