Positioning Integrity Assessment Using Error Bound Signaling
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Solution Overview
Problem
Existing wireless communication systems lack methods to determine the integrity of positioning estimates accurately, particularly in RAT-dependent positioning techniques, which can lead to unreliable location calculations due to unidentified error sources.
Innovation Solution
Implementing a framework for exchanging integrity service parameters and error bound information between user equipment (UE), base stations, and location servers to assess the trustworthiness of positioning estimates, using request/response signaling to determine the integrity of positioning estimates based on specific error types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If positioning estimates are calculated using RAT-dependent positioning techniques, then positioning functionality is provided, but the integrity and reliability of the positioning estimates cannot be accurately determined due to unidentified error sources
Solution Approach 1:
The patent segments the positioning error analysis by dividing errors into distinct categories: measurement errors (from UE, gNB, TRP) and assistance data errors (from LMF). This segmentation allows systematic identification and evaluation of each error type's impact on positioning integrity, making the previously undetectable error sources measurable and manageable through structured parameter collection and analysis.
2Reliability
If a framework for exchanging integrity service parameters and error bound information is implemented, then the reliability of positioning estimates is enhanced, but the device complexity increases due to additional signaling and processing requirements
Solution Approach 1:
The patent implements feedback mechanisms where the LMF requests integrity service parameters and error bound information from UE and gNB, processes this information to determine positioning estimate integrity, and provides feedback through positioning information messages. This feedback loop enables continuous monitoring and assessment of positioning reliability while managing complexity through standardized request/response signaling protocols.
Data Source
AI summary
Methods and apparatus of determining integrity of positioning estimates are disclosed. The apparatus includes a transmitter that transmits a request message to a device for requesting collection of integrity information, wherein the integrity information comprises integrity service parameters and error bound information associated with a type of positioning error: a receiver that receives a response message comprising determined integrity service parameters and error bound information from the device; and a processor that determines an integrity of a positioning estimate according to the response message.