Device Positioning With Integrity Filtering Across Radio-Access Sets
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Solution Overview
Problem
Existing positioning systems, such as those based on global navigation satellite systems (GNSS), face accuracy issues in environments with limited satellite connectivity, such as indoor scenarios, leading to unreliable positioning integrity.
Innovation Solution
A method and apparatus for determining location using multiple sets of radio accesses, where a device assesses positioning integrity and selectively reports position estimates based on multiple sets of radio access points, ensuring accurate and reliable positioning by evaluating and reporting only estimates that meet integrity criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GNSS positioning techniques are used, then positioning accuracy is improved, but reliability deteriorates in indoor scenarios with limited satellite connectivity
Solution Approach 1:
The patent changes the positioning parameters from satellite-based GNSS signals to radio access technology-based signals (downlink/uplink signals from base stations). This parameter change enables the system to transition from GNSS to RAT-dependent positioning methods, which can provide reliable positioning in indoor scenarios where satellite connectivity is limited or unavailable.
Solution Approach 2:
The patent introduces radio access technology signals as an intermediary positioning mechanism between the device and the positioning server. Instead of directly relying on GNSS satellites, the system uses radio signals from base stations as an intermediary to establish positioning measurements, thereby improving reliability in environments with poor satellite visibility.
2Reliability
If multiple sets of radio accesses are used for positioning, then positioning reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the positioning process into multiple independent sets of radio accesses, where each set corresponds to a specific measurement configuration. The device can process these segmented sets independently and selectively report position estimates based on integrity assessment, thereby managing complexity through structured division of the positioning task.
Solution Approach 2:
The patent implements a feedback mechanism where the device assesses the integrity of position estimates derived from multiple radio access sets and selectively reports only those that meet the integrity criteria. This feedback loop allows the system to filter out unreliable estimates and communicate only with the positioning server, reducing the information processing burden and managing system complexity.
3Reliability
If position estimates are selectively reported based on integrity criteria, then positioning reliability is improved, but response time increases
Solution Approach 1:
The patent performs preliminary integrity assessment of position estimates before reporting them to the positioning server. By evaluating the integrity criteria in advance and pre-determining which estimates are reliable, the system avoids time-consuming post-processing and ensures that only verified position estimates are transmitted, optimizing the balance between reliability and response time.
Data Source
AI summary
Apparatuses and methods for positioning are disclosed. In the arrangement a request for information associated with location of an apparatus is received by the apparatus, the request including an indication of a plurality of sets of radio accesses and information of positioning integrity. The apparatus determines based on the information of positioning integrity whether a position estimate based on a set of radio accesses of the indicated plurality of sets of radio accesses is to be reported in response to the request and responds the request according to the determining.