Signal Source Mobility Classification for 5G Positioning
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Solution Overview
Problem
In 5G wireless communication systems, determining the position of a mobile device is complicated by new signal sources with unknown mobility status, leading to potential errors in position estimates due to unreliable reference locations.
Innovation Solution
An apparatus and method to determine the expected mobility status of a signal source by obtaining identifiers associated with devices transmitting wireless signals, allowing for the classification of signal sources as mobile or stationary, thereby improving position estimate confidence and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new signal source is observed without knowing its mobility status, then the system can potentially use more signal sources for positioning, but the position estimate accuracy deteriorates due to unreliable reference locations from mobile signal sources
Solution Approach 1:
The system performs preliminary classification of signal sources as mobile or stationary using identifier-based lookup before using them for positioning. This advance categorization ensures that only stationary signal sources with reliable reference locations are used, preventing accuracy degradation while enabling versatile use of new signal sources.
Solution Approach 2:
An identifier-based lookup table serves as an intermediary between observing a new signal source and determining its suitability for positioning. The lookup table stores pre-classified mobility status information, allowing the system to quickly determine whether a signal source is reliable without direct measurement, thus maintaining accuracy while expanding adaptability.
2Reliability
If numerous observations are collected to determine crowdsourced mobility status reliably, then the reliability of mobility status determination improves, but the time and complexity of the positioning process increases
Solution Approach 1:
The system performs mobility status classification in advance and stores the results in a lookup table indexed by signal source identifiers. This preliminary action eliminates the need for real-time numerous observations, allowing rapid retrieval of reliable mobility status information during positioning operations.
Solution Approach 2:
Instead of performing numerous observations to determine mobility status, the system uses pre-collected crowdsourced information stored in the lookup table. This copying of previously aggregated data provides reliable mobility status determination without requiring time-consuming real-time observations.
3Productivity
If mobile signal sources are mistakenly used as stationary, then the positioning process can proceed with available signal sources, but unacceptable error is introduced into the position estimate
Solution Approach 1:
The system performs preliminary classification of signal sources as mobile or stationary using identifier-based lookup before using them for positioning. This advance categorization ensures that only stationary signal sources with reliable reference locations are used, preventing unacceptable errors while maintaining positioning process efficiency.
Solution Approach 2:
The identifier-based lookup table acts as an intermediary that filters out mobile signal sources before they can be used for positioning. This intermediary check ensures that only reliable stationary signal sources are selected, maintaining both efficiency and reliability by preventing erroneous usage of mobile sources.
Data Source
AI summary
A signal source mobility status method includes: obtaining, at an apparatus, at least one identifier that is associated with one or more devices including a signal source that is configured to transmit wireless signals and whose mobility status is unknown to the apparatus; and determining, at the apparatus based on the at least one identifier, whether an expected mobility status of the signal source is mobile or stationary.