GNSS Vehicle Localization Using 5G Signal Reference Data
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Solution Overview
Problem
Current GNSS-based vehicle localization methods face inaccuracies and integrity issues due to atmospheric disturbances and multipath propagation, especially in urban areas, where GNSS signals are often impaired by reflections from surrounding objects.
Innovation Solution
The method combines GNSS satellite signal reception with 5G signal reception to identify and correct impairments by using 5G localization data as reference values, enabling the detection and elimination of erroneous GNSS measurements through triangulation and statistical tests, thereby enhancing the integrity and accuracy of vehicle positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GNSS satellite signals are received for vehicle localization, then positioning capability is provided, but accuracy and integrity deteriorate due to atmospheric disturbances and multipath propagation
Solution Approach 1:
The patent introduces 5G base station signals as an intermediary reference system to mediate between the impaired GNSS signals and the vehicle localization function. The 5G positioning data serves as a mediator to detect and identify erroneous GNSS measurements, thereby resolving the contradiction between maintaining GNSS-based positioning capability and ensuring accuracy/integrity in urban environments with multipath propagation
Solution Approach 2:
The patent implements a feedback mechanism where 5G localization data is continuously compared with GNSS localization data to detect discrepancies. When deviations exceed a threshold, the system identifies and discards erroneous GNSS measurements, creating a closed-loop feedback system that maintains positioning integrity despite atmospheric disturbances and multipath effects
2Measurement precision
If 5G signals are combined with GNSS signals for localization, then accuracy and integrity improve, but device complexity increases
Solution Approach 1:
The patent makes the localization system multi-functional by enabling it to operate with both GNSS and 5G infrastructure. The same localization device can process both satellite signals and cellular signals, automatically selecting or combining them based on availability and quality, thereby achieving high accuracy without proportionally increasing complexity through dedicated separate systems
Solution Approach 2:
The patent merges GNSS positioning functionality with 5G positioning functionality into a unified localization system. By combining these two positioning technologies and using 5G data to validate and correct GNSS measurements, the system achieves enhanced accuracy while managing complexity through integrated processing rather than separate independent systems
3Reliability
If internal statistical tests are used to detect erroneous GNSS measurements, then error detection capability is provided, but detection reliability is insufficient without external references
Solution Approach 1:
The patent introduces external 5G positioning data as an intermediary reference to enhance the error detection capability of internal statistical tests. The 5G measurements serve as an independent reference system that mediates between the GNSS measurements and the detection algorithm, providing an external benchmark against which GNSS data can be validated, thereby improving both detection reliability and precision
Data Source
AI summary
A method for the GNSS-based localization of a vehicle includes (a) receiving GNSS satellite signals from at least one GNSS satellite and determining GNSS localization data using the received GNSS satellite signals, (b) receiving 5G signals and determining 5G localization data using the received 5G signals, and (c) evaluating the GNSS localization data using the 5G-localization data in order to identify possible impairments of GNSS satellite signals.