PRS Resource Pairing for Carrier Phase Measurement
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Solution Overview
Problem
Existing wireless communication systems face challenges in enabling user equipment (UE) to quickly and easily determine a suitable positioning reference signal (PRS) resource pair for differencing, which is essential for accurate carrier phase measurements.
Innovation Solution
The method involves receiving positioning configuration information from a network, which includes information about a differencing resource set comprising multiple PRS resources. The UE then performs measurements based on this configuration and reports the phase difference value measured using two PRS resources in a pair relationship to the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE performs carrier phase measurement using conventional PRS resources without preconfigured pairing, then the measurement process becomes complex and time-consuming, but the positioning accuracy cannot be significantly improved
Solution Approach 1:
The network pre-configures differencing resource sets containing paired PRS resources before the UE performs measurements. This preliminary pairing of reference PRS resources and measurement PRS resources eliminates the need for the UE to complexly determine suitable pairs during measurement, thereby reducing measurement process complexity while enabling accurate carrier phase differencing for improved positioning accuracy
Solution Approach 2:
The PRS resources are segmented into structured differencing resource sets with defined pair relationships. By dividing the PRS resources into specific pairs (reference PRS and measurement PRS) within resource sets, the system enables organized and systematic carrier phase differencing measurements, reducing the complexity of resource selection while maintaining high positioning accuracy
2Productivity
If the UE determines PRS resource pairs dynamically during measurement, then flexibility is maintained, but the time required for measurement increases
Solution Approach 1:
The network performs the time-consuming task of determining suitable PRS resource pairs in advance and configures these pairs as differencing resource sets for the UE. This preliminary determination eliminates the need for the UE to spend time dynamically searching for and evaluating PRS pairs during measurement, thereby significantly reducing measurement time while maintaining measurement flexibility through pre-configured options
3Adaptability or versatility
If multiple PRS resources are used for differencing without structured organization, then measurement options increase, but the difficulty of selecting suitable pairs increases
Solution Approach 1:
PRS resources are organized into structured differencing resource sets where each set contains specifically paired reference PRS and measurement PRS resources. This segmentation provides clear pair relationships and selection rules, making it easy for the UE to determine which pairs to use while maintaining measurement flexibility through multiple configured resource sets that can adapt to different measurement scenarios
Solution Approach 2:
The system uses parameters such as resource set IDs, resource IDs, and TRP IDs to systematically identify and select PRS pairs from pre-configured differencing resource sets. By changing and combining these parameters according to predefined rules, the UE can easily determine suitable PRS pairs while maintaining adaptability to different positioning scenarios and network configurations
Data Source
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AI summary
A method by which a terminal measures a carrier phase, and a device therefor, according to various embodiments are disclosed. Disclosed are the method and the device therefor, the method comprising the steps of: receiving positioning setting information from a network; measuring on the basis of the positioning setting information; and reporting the measurement results to the network, wherein the positioning setting information includes information about a differencing resource set including a plurality of PRS resources for removing a timing error in carrier phase measurement, and the measurement results include a phase difference value measured using two PRS resources having a pair relationship included in the differencing resource set.