UE Carrier Phase Measurement Using Time-Domain Windows
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately performing carrier phase measurements due to timing errors, which are not effectively addressed by current methods.
Innovation Solution
A method and apparatus for user equipment (UE) to perform carrier phase measurement by configuring a time-domain window (TDW) within a measurement gap, ensuring phase continuity, and measuring phase differences of positioning reference signals (PRSs) within the same TDW.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If carrier phase measurement is performed without time-domain window configuration, then measurement coverage is maximized, but timing errors cause measurement inaccuracy
Solution Approach 1:
The measurement process is segmented into discrete time-domain windows (TDWs) with defined start and end points. Each TDW contains a specific number of slots configured for carrier phase measurement, creating structured measurement intervals that eliminate timing errors by confining measurements to precise time boundaries where phase continuity is maintained.
2Reliability
If time-domain window size is increased to ensure phase continuity, then measurement accuracy improves, but measurement time and operational limitations increase
Solution Approach 1:
The TDW configuration is made dynamic and adaptable. The network can configure multiple TDWs with different sizes (number of slots) based on specific measurement requirements. The UE can switch between different TDW configurations, allowing the system to optimize between phase continuity reliability and measurement time loss depending on the operational context and measurement needs.
Data Source
AI summary
Disclosed are a method by which a terminal performs carrier phase measurement in a wireless communication system, according to various embodiments, and a device therefor. Disclosed is a method comprising the steps of: receiving, from a network, configuration information for repeated sequential configuration of time domain windows (TDWs) for carrier phase measurement within a measurement gap; measuring phase difference in positioning reference signals (PRSs) on the basis of the configuration information; and reporting measurement information regarding the phase difference to the network, wherein the measurement of the phase difference is performed using only the PRSs received within the same TDW. A device for performing the method is also disclosed.