Mobile Network Base Station as GNSS Reference for Positioning Accuracy
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Solution Overview
Problem
Current methods for increasing positioning accuracy of global navigation satellite systems, such as differential GPS and network-based RTK, require high efforts for installing and maintaining reference stations, limiting infrastructure expansion and coverage.
Innovation Solution
A method where a reference station located at a base station of a mobile communication network receives satellite signals, and a server calculates correction information, which is then transmitted to mobile user equipment to improve positioning accuracy, reducing installation and maintenance efforts by reusing existing infrastructure and employing a server for calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference stations are installed and maintained for differential GPS or network-based RTK systems, then positioning accuracy is improved, but installation and maintenance efforts increase, limiting infrastructure expansion and coverage
Solution Approach 1:
The patent makes base stations of mobile communication networks perform dual functions: their existing communication function and new reference station function for receiving satellite signals and providing correction information. This eliminates the need for separate dedicated reference station infrastructure, reducing installation and maintenance efforts while maintaining positioning accuracy improvement
Solution Approach 2:
The patent combines the reference station infrastructure with existing mobile communication network base stations. By merging these functions into a single infrastructure, the system avoids duplicating resources and reduces the overall complexity of installation and maintenance while achieving widespread coverage
2Measurement precision
If multiple reference stations are deployed for network-based RTK, then positioning accuracy within 2 to 3 cm is achieved, but the number of reference stations increases infrastructure complexity and reduces service coverage
Solution Approach 1:
By enabling existing mobile communication base stations to serve as reference stations, the system leverages the already widespread distribution of communication infrastructure. This provides high-precision positioning services over large areas without requiring additional dedicated reference station deployments, thus expanding service coverage while maintaining accuracy
Data Source
AI summary
A method for improving positioning accuracy of global navigation satellite systems includes: in a first step, a reference station located at a base station of a mobile communication network receives at least a first satellite signal transmitted from a global navigation satellite system; in a second step, subsequent to the first step, a server of the mobile communication network calculates correction information based on the first satellite signal received by the reference station; in a third step, subsequent to the second step, the correction information is transmitted to a mobile user equipment entity from a base station of the mobile communication network; in a fourth step, the mobile user equipment entity receives a second satellite signal transmitted from the global navigation satellite system; and in a fifth step, subsequent to the third step, the position of the mobile user equipment entity is calculated based on the correction information and the second satellite signal.