17809533. USING DOPPLER FOR MULTIPATH DETECTION AND MITIGATION IN RF-BASED POSITIONING simplified abstract (QUALCOMM Incorporated)
USING DOPPLER FOR MULTIPATH DETECTION AND MITIGATION IN RF-BASED POSITIONING
Organization Name
Inventor(s)
Yuxiang Peng of Sunnyvale CA (US)
Jingchao Bao of San Diego CA (US)
Gengsheng Zhang of Cupertino CA (US)
Yinghua Yang of San Jose CA (US)
USING DOPPLER FOR MULTIPATH DETECTION AND MITIGATION IN RF-BASED POSITIONING - A simplified explanation of the abstract
This abstract first appeared for US patent application 17809533 titled 'USING DOPPLER FOR MULTIPATH DETECTION AND MITIGATION IN RF-BASED POSITIONING
Simplified Explanation
The abstract describes a technology that improves the performance and accuracy of RF-based positioning systems by using RF Doppler measurements to detect and mitigate multipath effects. This technology can be applied to satellite navigation, terrestrial positioning systems, and indoor positioning.
- The technology enables a device to receive signals from multiple sources and determine if each signal is a multipath signal based on a Doppler shift measurement.
- Based on this determination, the device can de-weight or exclude certain signals when estimating its position.
- By mitigating the effects of multipath signals, the accuracy and reliability of RF-based positioning systems can be improved.
Potential Applications
- Satellite navigation systems, such as GPS, can benefit from improved accuracy and reliability in determining the position of a device.
- Terrestrial positioning systems, used in various industries like transportation and logistics, can provide more precise location information.
- Indoor positioning systems, commonly used in shopping malls, airports, and museums, can offer better navigation and tracking capabilities.
Problems Solved
- Multipath effects in RF-based positioning systems can cause inaccuracies and errors in determining the position of a device.
- Traditional methods of mitigating multipath effects may not be sufficient or effective in certain scenarios.
- This technology solves the problem by using RF Doppler measurements to identify and exclude multipath signals, improving the overall performance of RF-based positioning systems.
Benefits
- Improved accuracy and reliability in determining the position of a device in various environments.
- Enhanced performance of satellite navigation systems, terrestrial positioning systems, and indoor positioning systems.
- Better navigation and tracking capabilities in indoor environments, leading to improved user experiences.
Original Abstract Submitted
Aspects presented herein may improve the performance and accuracy of RF-based positioning. Aspects presented herein may enable a device to use RF Doppler measurements to detect and mitigate multipath effects in RF-based positioning. The RF-based positioning may include satellite navigation, terrestrial positioning system, and/or indoor positioning. In one aspect, a UE receives, via a receiver, signals from one or more entities. The UE determines whether each received signal is a multipath signal based on a Doppler shift measurement. The UE de-weights or excludes one or more signals of the received signals in estimating a position of the UE based on whether the respective received signal is determined to be a multipath signal.
