PRS Measurement Reporting With Sample Count
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Solution Overview
Problem
Current wireless communication systems, particularly in the transition to 5G, face challenges in achieving enhanced spectral efficiency, reduced latency, and improved positioning accuracy due to limitations in positioning reference signal (PRS) processing and measurement reporting mechanisms.
Innovation Solution
A method and system for wireless positioning that involves a network node receiving assistance data from a location server, performing positioning measurements using a subset of PRS resource samples, and transmitting a measurement report, which includes the positioning measurements and the number of samples used, to enhance measurement efficiency and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all PRS resource samples are processed for positioning measurements, then positioning accuracy is improved, but processing time and latency increase
Solution Approach 1:
The patent applies partial action by processing only a subset of available PRS resource samples for positioning measurements. The network node receives assistance data indicating a first number of samples but performs measurements using a second number of samples that is less than the first number. This selective processing maintains acceptable positioning accuracy while reducing processing time and latency, directly resolving the contradiction between complete sample processing and timely measurement completion.
2Measurement precision
If more PRS samples are used for positioning measurements, then positioning accuracy is improved, but spectral efficiency decreases
Solution Approach 1:
The patent implements partial action by utilizing only a portion of the configured PRS samples for actual measurements. The assistance data configures a first number of samples, but the network node performs measurements using a second number of samples that is less than the first number. This approach improves spectral efficiency by reducing the number of samples processed while maintaining sufficient positioning accuracy through intelligent sample selection.
3Loss of information
If the measurement report includes all configured PRS samples, then measurement completeness is improved, but signaling overhead increases
Solution Approach 1:
The patent applies the extraction principle by removing unnecessary information from the measurement report. Instead of reporting all first number of samples configured in the assistance data, the network node extracts and reports only the second number of samples that were actually used for measurements, along with the count of samples used. This reduces signaling overhead while maintaining measurement completeness by reporting all actually processed samples.
Solution Approach 2:
The patent implements partial action in reporting by including only the subset of samples that were actually processed for measurements. The measurement report contains the second number of samples used rather than the first number of samples configured, preventing redundant information transmission and reducing signaling overhead while maintaining complete reporting of all processed measurements.
Data Source
AI summary
Disclosed are techniques for wireless positioning. In an aspect, a network node receives assistance data from a location server, the assistance data including at least a configuration of at least a first number of samples of a plurality of instances of a positioning reference signal (PRS) resource of a PRS resource set to use to determine at least one positioning measurement of the PRS resource for a positioning session, performs the at least one positioning measurement using a second number of samples of the plurality of instances of the PRS resource, and transmits a measurement report to the location server, the measurement report including at least the at least one positioning measurement and the second number of samples.