Mobile Device Positioning via RF Signal Batching
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Solution Overview
Problem
Mobile communication devices face challenges in accurately determining their location in indoor environments due to the lack of reliable satellite signals and insufficient positioning assistance parameters in positioning tiles, leading to less than sufficient position fixes.
Innovation Solution
The method involves storing observations of radio frequency signals from wireless transmitters in batches based on associations, allowing mobile devices to estimate their location even when parameters of unknown transmitters are absent from provided positioning assistance data, by using past observations of known transmitters with similar characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If positioning tiles are used to assist localization, then positioning assistance parameters are provided to mobile devices, but the tiles may lack parameters for wireless transmitters currently observed by the device, resulting in less than sufficient position fixes
Solution Approach 1:
The system performs preliminary actions by collecting and storing signal observations from wireless transmitters in advance, before a positioning request is made. These pre-collected observations are stored in a database with associations between transmitters and locations, allowing the system to quickly retrieve relevant data when positioning is needed, rather than collecting data at the moment of positioning request.
Solution Approach 2:
The patent introduces an intermediary component - a database system that stores and manages transmitter signal observations and their associations. This intermediary acts as a bridge between the mobile device and the positioning calculation, providing pre-processed observation data that enhances the completeness of positioning assistance parameters without requiring the tile system to directly contain all possible transmitter parameters.
2Measurement precision
If multiple observations of wireless transmitters are collected and stored, then positioning accuracy is improved, but time and computational resources are consumed during data collection and processing
Solution Approach 1:
The system performs preliminary actions by collecting and storing signal observations from wireless transmitters in advance, before a positioning request is made. These pre-collected observations are stored in a database with associations between transmitters and locations, allowing the system to quickly retrieve relevant data when positioning is needed, rather than collecting data at the moment of positioning request.
Solution Approach 2:
The patent merges multiple transmitter observations that are associated with the same location into consolidated data structures. By combining observations from multiple transmitters and associating them with location information, the system creates a comprehensive dataset that can be efficiently retrieved and used for positioning calculations, reducing the time required to gather sufficient positioning data.
3Measurement precision
If signal observations are stored with associations between transmitters, then location estimation accuracy is enhanced, but memory resources are increased for storing the observation data
Solution Approach 1:
The patent segments the positioning data into modular components: individual transmitter observations, location associations, and measurement batches. This segmentation allows the system to store only the necessary associations between transmitters and locations rather than storing complete positioning datasets for all possible scenarios, reducing overall storage requirements while maintaining the ability to accurately estimate locations when needed.
Data Source
AI summary
Example methods, apparatuses, and/or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate and/or support one or more operations and/or techniques for enhancing positioning, which may include E911 positioning, via measurement batching, such as for use in or with mobile communication devices, for example.