PRS Bandwidth Part Reporting for Faster 5G Positioning
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Solution Overview
Problem
In 5G wireless communication systems, there is a need for efficient bandwidth management during positioning sessions to enhance spectral efficiency and reduce latency in wireless positioning measurements.
Innovation Solution
A method and device for performing measurements of positioning reference signals (PRS) within multiple bandwidth parts (BWPs) and transmitting measurement reports and bandwidth indications to a location server during a positioning session.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the receiver device transmits measurement reports for multiple bandwidth parts (BWPs), then the location server can perform more comprehensive positioning measurements, but the signaling overhead and complexity of the positioning system increases
Solution Approach 1:
The location server pre-configures the receiver device with multiple bandwidth parts (BWPs) and their associated parameters before the positioning measurement process begins. This preliminary configuration enables the receiver to efficiently perform measurements across multiple BWPs without requiring complex real-time coordination, thereby improving measurement comprehensiveness while managing system complexity.
Solution Approach 2:
The positioning measurement process is divided into separate measurement tasks for different bandwidth parts (BWPs). Each BWP is measured independently with its own set of parameters, allowing the system to process and manage measurements in manageable segments rather than as a monolithic complex task, thus improving overall measurement precision while controlling complexity.
2Measurement precision
If the receiver device performs measurements across multiple bandwidth parts (BWPs), then the positioning accuracy is improved, but the measurement and processing time increases
Solution Approach 1:
The receiver device performs measurements across multiple bandwidth parts (BWPs) in a periodic, structured sequence rather than simultaneously or randomly. Each BWP is measured in predetermined time slots with specific periodicity, allowing the system to gather comprehensive positioning data while maintaining efficient timing and minimizing overall session duration.
Solution Approach 2:
The measurement configuration including BWP parameters, timing, and sequence is pre-established before the positioning session begins. This preliminary setup allows the receiver to execute measurements efficiently without real-time decision-making delays, thus improving accuracy across multiple BWPs while reducing the total time required for the positioning session.
3Reliability
If the location server uses measurements from multiple bandwidth parts (BWPs) for positioning calculation, then the robustness of positioning is improved, but the computational complexity increases
Solution Approach 1:
The positioning calculation process at the location server segments the measurements from different bandwidth parts (BWPs) into separate processing streams. Each BWP measurement is processed with its specific parameters and weights independently, then the results are combined to produce the final position estimate. This segmentation improves robustness by utilizing diverse measurement sources while managing computational complexity through modular processing.
Solution Approach 2:
The location server dynamically adjusts processing parameters such as measurement weights, filtering thresholds, and combination algorithms based on the specific characteristics of each BWP and the current positioning requirements. By changing these parameters adaptively, the server enhances positioning robustness across varying conditions while optimizing computational efficiency and managing processing complexity.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a UE or base station performs, during a positioning session, a measurement of a first positioning reference signal (PRS) within a first bandwidth part (BWP), performs, during the positioning session, a measurement of a second PRS within a second BWP, transmits, to a location server, a measurement report including the measurement of the first PRS and the measurement of the second PRS, and transmits, to the location server, an indication of the first BWP, the second BWP, or both.