Error Source Exchange for Positioning Integrity Assessment
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Solution Overview
Problem
Existing positioning technologies, particularly those based on RAT-dependent methods such as uplink and downlink positioning, lack effective mechanisms for determining positioning integrity, which is crucial for ensuring the reliability and accuracy of location data and timely alerts in mobile communications.
Innovation Solution
A method for exchanging error source information between terminals and LMFs in downlink or combined uplink and downlink positioning, enabling the determination of positioning integrity by transmitting and receiving error source information using LPP messages to facilitate accurate positioning integrity assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If positioning integrity determination is implemented for RAT-dependent technologies, then positioning reliability is improved, but system complexity increases due to the need for error source information exchange mechanisms
Solution Approach 1:
The patent introduces LMF (Location Management Function) as an intermediary entity that facilitates error source information exchange between terminals and positioning systems. The LMF receives error source information from terminals, processes it according to standardized protocols, and provides positioning integrity assessments, thereby enabling reliable positioning integrity determination without requiring direct complex interactions between all system components
Solution Approach 2:
The patent implements a feedback mechanism where terminals transmit error source information to the LMF, which then provides positioning integrity determinations back to the terminals. This closed-loop feedback system enables continuous monitoring and assessment of positioning reliability, allowing the system to adapt to varying conditions while maintaining high positioning integrity standards
2Measurement precision
If error source information exchange is established between terminals and LMFs, then positioning integrity determination capability is improved, but message processing complexity increases
Solution Approach 1:
The patent standardizes the error source information format by defining specific parameters such as measurement error, timing error, and beam/antenna error. By transforming complex positioning data into standardized parameter formats that conform to existing protocols, the system enables precise positioning integrity determination while simplifying message processing through consistent data structures and clear processing rules
Data Source
AI summary
A method for transmitting error source information, includes: transmitting error source information for positioning to a second communication device, wherein the error source information is used by the second communication device to determine positioning integrity of the positioning; where the positioning comprises downlink positioning or positioning combining uplink and downlink.