BPS Timing Signal Testing for Interference-Resilient Positioning
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Solution Overview
Problem
Current sources of location and timing information, such as GPS and cellular communications, have limitations including coverage gaps and vulnerability to interference, necessitating reliable testing of broadcast positioning systems (BPS) for functionality and reliability.
Innovation Solution
A method and system for testing BPS devices using a BPS test system that transmits signals with timing information, receives and evaluates the response from the device under test, and compares the extracted timing information to a reference clock or other signals to assess performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS is used as a source of location and timing information, then location and timing information can be provided, but coverage is limited and the system is vulnerable to interference
Solution Approach 1:
The patent introduces a broadcast positioning system as an intermediary source of location and timing information. This BPS operates independently from GPS and cellular networks, providing a mediator that can supply positioning data when GPS is unavailable or compromised, thereby resolving the reliability issue without requiring direct GPS dependency.
Solution Approach 2:
The broadcast positioning system serves multiple functions: it provides location information, timing information, and can operate as an independent backup system. This multi-functionality allows it to replace or supplement GPS and cellular networks, addressing the vulnerability to interference by offering a diverse, non-dependent source.
2Reliability
If cellular communications system is used as a source of location and timing information, then location and timing information can be provided, but base station processing resources become overwhelmed
Solution Approach 1:
The patent extracts the location and timing information provision function from the cellular base station processing load. By implementing a dedicated broadcast positioning system that transmits positioning data independently from cellular signals, the base station's processing resources are relieved of the burden of providing positioning services, allowing it to focus on cellular communications.
3Reliability
If broadcast positioning system is used to supplement other sources, then coverage and reliability improve, but the system needs comprehensive testing to ensure functionality
Solution Approach 1:
The patent segments the testing process into distinct components: a test system that transmits test signals, a device under test that receives and processes signals, and an evaluation system that analyzes performance. This segmentation allows comprehensive testing of BPS functionality while organizing the complexity into manageable, independent test modules.
4Measurement precision
If BPS test system transmits signals with timing information, then evaluation of BPS device functionality is enabled, but signal transmission and processing complexity increases
Solution Approach 1:
The test system embeds known timing information and reference signals into the transmitted test signals in advance. This preliminary action allows the device under test to extract and compare timing data against known values, enabling accurate measurement of timing performance without requiring complex real-time analysis systems.
Data Source
AI summary
A method for testing a broadcast positioning system (BPS) device includes transmitting, using a BPS test system, a signal to a BPS device under test (DUT), the signal including BPS timing information. The method further includes receiving, by the BPS test system, from the BPS DUT and responsive to the transmitted signal, a signal including timing information. The method further includes reading, from the signal transmitted by the BPS DUT, the timing information. The method further includes using the timing information extracted from the signal transmitted by the BPS DUT to evaluate functionality or performance of the BPS DUT.