UE Timing Accuracy for Reference Signal Transmission
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Solution Overview
Problem
In wireless communication networks, particularly in 5G NR, achieving accurate positioning of user equipment (UE) while in a power saving state is challenging due to the need for balancing timing accuracy with power consumption, as higher timing accuracy requires more active components and thus higher power consumption.
Innovation Solution
The UE determines and supports multiple timing accuracies based on positioning methods and configurations, allowing it to adjust its clock frequency and maintain necessary components active only to achieve the required timing precision for transmitting reference signals during power saving states, optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE maintains high timing accuracy for reference signal transmission, then positioning precision is improved, but power consumption increases due to more active components
Solution Approach 1:
The patent applies dynamics by making the timing accuracy adaptive rather than static. The UE dynamically adjusts its timing accuracy based on the specific positioning method being used (e.g., angle-based vs. timing-based positioning). This allows the system to optimize power consumption by maintaining only the necessary timing precision required for each positioning method, rather than continuously maintaining maximum timing accuracy regardless of the positioning technique employed.
2Adaptability or versatility
If the UE supports multiple timing accuracies with different error limits, then adaptability to different positioning methods is improved, but device complexity increases
Solution Approach 1:
The patent implements parameter changes by allowing the UE to support multiple timing accuracy levels with different timing error limits. Instead of maintaining a single fixed timing accuracy, the system can adjust the timing error limit parameter based on the positioning method requirements. For example, angle-based positioning may tolerate larger timing errors while timing-based positioning requires stricter timing accuracy, and the UE adapts its timing error limit accordingly.
Data Source
AI summary
Methods, systems, computer-readable media, and apparatuses for UE positioning are described. In some embodiments, a UE is configured to transmit a reference signal to a network resource for performing measurements on the reference signal and deriving the position of the UE. The timing of the reference signal is tracked at a particular precision. The precision is based on a timing accuracy that the UE can support from different timing accuracies. The different timing accuracies may be supported, each of which may have a different set of timing error limits. For example, for an angular-based positioning of the UE, a low timing accuracy may be supported. In comparison, for a timing-based positioning method, a high timing accuracy may be supported.