Two-Part UCI Encoding for Low-Latency Positioning Reports
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Solution Overview
Problem
Current wireless communication systems, particularly in the transition to 5G, face challenges in achieving high spectral efficiency, reduced latency, and low latency reporting mechanisms for positioning techniques, which are essential for meeting the stringent requirements of commercial and IoT applications.
Innovation Solution
The implementation of a method that allows for the reporting of positioning measurements at the PHY layer (Part 1 and Part 2 CSI reports) and locating the location server in the RAN, enabling efficient and low-latency positioning by separating the payload sizes and types of measurements, thereby reducing latency and improving network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If positioning measurements are reported using traditional higher-layer protocols, then measurement accuracy is maintained, but latency increases and spectral efficiency decreases
Solution Approach 1:
The patent segments the positioning measurement reporting into two parts: Part 1 contains critical timing information (measurement timing indicator) that enables low-latency processing, while Part 2 contains additional measurement details. This segmentation allows the network to process critical positioning data quickly without waiting for complete measurement reports, thereby reducing latency while maintaining reliability through the two-part structure.
Solution Approach 2:
The patent introduces a new dimension by enabling positioning measurement reporting at the physical layer (PHY layer) rather than only at higher protocol layers. This allows positioning information to be transmitted simultaneously with other physical layer signals, eliminating the latency inherent in higher-layer protocol processing while maintaining measurement accuracy through structured report formats.
2Measurement precision
If comprehensive positioning measurement data is transmitted, then positioning accuracy is improved, but spectral efficiency decreases
Solution Approach 1:
The patent segments positioning measurement data into essential and supplementary components. Part 1 contains the measurement timing indicator and critical timing information necessary for accurate positioning, while Part 2 includes additional measurement details. This segmentation enables the network to prioritize and process critical data efficiently, maintaining positioning accuracy while improving spectral efficiency by avoiding transmission of unnecessary data.
Solution Approach 2:
The patent applies local quality by transmitting different levels of measurement detail to different locations in the communication protocol structure. Critical timing information is placed in Part 1 for immediate processing, while additional measurement data is placed in Part 2. This allows the system to optimize spectral efficiency by transmitting only the necessary quality level of data at each stage, while maintaining overall positioning accuracy through the structured approach.
3Loss of time
If positioning reports are processed at higher protocol layers, then data完整性 is maintained, but processing latency increases
Solution Approach 1:
The patent moves positioning measurement reporting to the physical layer, creating a new dimension in the protocol hierarchy where positioning data can be transmitted and processed simultaneously with other physical layer signals. This eliminates the sequential processing latency inherent in higher-layer protocols while maintaining data integrity through structured report formats and timing indicators that ensure accurate data reconstruction.
Solution Approach 2:
The patent incorporates a measurement timing indicator in Part 1 of the positioning report that provides advance information about when the measurement was taken. This preliminary timing information allows the network to process and synchronize positioning data immediately upon receipt, without waiting for complete higher-layer protocol processing, thereby reducing latency while maintaining data integrity through the timing reference.
Data Source
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AI summary
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) performs a plurality of positioning measurements of a plurality of positioning reference signals (PRS) transmitted by at least one network node, transmits a first physical layer message having a fixed payload size, wherein the first physical layer message includes at least an indication of a type, a number, or both of a first set of positioning measurements of the plurality of positioning measurements to be included in a second physical layer message having a variable payload size, and transmits the second physical layer message having the variable payload size, wherein the second physical layer message includes at least the first set of positioning measurements, and wherein the variable payload size of the second physical layer message is based at least on the type, the number, or both of the first set of positioning measurements.