UE Capability Reporting for LOS-Aware Carrier-Phase Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in accurately performing carrier phase positioning (CPP) without increasing signaling load, particularly in determining the line of sight (LOS) estimation capability of user equipment (UE) for precise location estimation.
Innovation Solution
The method involves reporting capability information related to phase measurement, including LOS estimation, based on subcarrier spacing, frequency band, and number of carriers, to determine whether to perform carrier phase positioning, thereby optimizing measurement results and minimizing signaling load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If carrier phase positioning (CPP) is introduced to improve location estimation accuracy, then measurement precision is improved, but signaling load increases
Solution Approach 1:
The capability information is segmented into multiple dimensions including time domain granularity, frequency domain granularity, number of simultaneous carriers, and phase domain granularity. This segmentation allows the network to selectively activate only the necessary capability components for CPP, avoiding transmission of unnecessary capability data and reducing overall signaling load while maintaining location estimation accuracy.
Solution Approach 2:
The UE reports capability information in advance before actual positioning measurements are performed. This preliminary action includes reporting LOS estimation capability, time domain granularity, frequency domain granularity, and phase domain granularity. The network uses this pre-reported information to determine whether to configure CPP measurements, avoiding unnecessary signaling exchanges and reducing signaling load while ensuring accurate location estimation when needed.
2Measurement precision
If detailed capability information is reported to ensure accurate CPP measurements, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The capability information structure is designed to be universal and multi-functional, supporting both traditional positioning methods and carrier phase positioning. The same capability report framework accommodates different granularity levels (time, frequency, phase domains) and different numbers of simultaneous carriers, allowing a single standardized mechanism to handle diverse positioning requirements without increasing device complexity.
Solution Approach 2:
The patent introduces multiple configurable parameters including time domain granularity, frequency domain granularity, phase domain granularity, and number of simultaneous carriers. These parameters can be adjusted based on specific deployment scenarios and UE capabilities, allowing optimization of measurement precision without permanently increasing device complexity. The network can select appropriate parameter combinations based on service requirements.
Data Source
AI summary
Disclosed are a method for a terminal to perform a measurement related to positioning in a wireless communication system, and a device therefor, according to various embodiments. Disclosed are a method and a device therefor, the method comprising the steps of: reporting capability information about the terminal related to location measurement; receiving configuration information for the location measurement; performing a measurement on a received reference signal on the basis of the configuration information; and reporting a measurement result for the reference signal.