Terminal Device Positioning Using Pre-configured Assistance Information
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Solution Overview
Problem
Inaccurate positioning of terminal devices in 5G NR systems due to the use of pre-configured positioning assistance information that may become invalid over time or when the device moves out of a specific area or time period.
Innovation Solution
The terminal device determines the availability of pre-configured positioning assistance information and requests reconfiguration when it is unavailable, ensuring accurate positioning by using reconfigured assistance information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If pre-configured positioning assistance information is used, then positioning speed is improved, but positioning accuracy deteriorates when the information becomes invalid
Solution Approach 1:
The terminal device performs preliminary actions by pre-configuring positioning assistance information and determining its availability before actual positioning. The device checks whether the pre-configured information is still valid (e.g., within valid time period or area) and only uses it if available, thus avoiding inaccurate positioning while maintaining speed benefits when valid.
Solution Approach 2:
The terminal device implements feedback by determining the availability status of pre-configured positioning assistance information and adjusting its usage accordingly. When the information becomes invalid (e.g., time period expired or area changed), the device stops using it and requests reconfiguration, ensuring continuous positioning accuracy.
2Measurement precision
If positioning assistance information is reconfigured every time, then positioning accuracy is improved, but communication overhead increases
Solution Approach 1:
The network side performs preliminary action by pre-configuring positioning assistance information for the terminal device. This pre-configuration allows the terminal to use the information without repeated reconfiguration requests, reducing communication overhead while maintaining accuracy as long as the information remains valid.
Solution Approach 2:
The terminal device performs self-service by determining its own availability status of pre-configured positioning assistance information and autonomously deciding whether to use it or request reconfiguration. This self-determination mechanism avoids unnecessary reconfiguration requests and reduces communication overhead.
3Device complexity
If pre-configured positioning assistance information is used without validation, then device complexity is reduced, but positioning reliability deteriorates
Solution Approach 1:
The terminal device performs preliminary determination of the availability status of pre-configured positioning assistance information before using it for positioning. This preliminary check (e.g., checking time validity or area validity) adds minimal complexity while significantly improving reliability by preventing use of invalid information.
Data Source
AI summary
A positioning method is performed by a terminal device, and includes: receiving pre-configured first positioning assistance information; and determining whether the first positioning assistance information is available, and using the first positioning assistance information in response to determining that the first positioning assistance information is available.