Carrier Phase Error Feedback for Accurate UE Position Estimation
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately estimating the position of user equipment due to carrier phase measurement errors, which affect the precision and latency of positioning processes.
Innovation Solution
The method involves performing carrier phase measurements for positioning, determining error information associated with these measurements, and transmitting this information to a position estimation entity to improve the accuracy of position estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If carrier phase measurements are performed for position estimation, then positioning capability is enabled, but measurement errors reduce position estimation accuracy
Solution Approach 1:
The patent implements feedback by measuring carrier phase errors and transmitting this error information back to the position estimation entity. The position estimation entity then uses this feedback to compensate for and correct the measurement errors, thereby improving position estimation accuracy while maintaining reliable carrier phase measurements.
2Measurement precision
If error information is transmitted to position estimation entity, then position estimation accuracy improves, but communication overhead increases
Solution Approach 1:
The patent extracts only the essential error information from the complete carrier phase measurement data and transmits only this extracted error information to the position estimation entity. This selective extraction reduces the amount of data that needs to be communicated while still providing sufficient information to improve position estimation accuracy.
3Measurement precision
If carrier phase measurements are used for positioning, then positioning precision is improved, but system complexity increases
Solution Approach 1:
The patent introduces an intermediary error measurement and communication mechanism between the carrier phase measurement process and the position estimation process. This intermediary layer measures the errors, communicates them efficiently, and enables the position estimation entity to correct the measurements, thereby achieving high positioning precision without directly increasing the complexity of the core measurement and estimation systems.
Data Source
AI summary
Aspects are directed to a wireless measurement entity that performs a carrier phase measurement associated with a reference signal for positioning (RS-P) measurement for a position estimation of a user equipment (UE). The wireless measurement entity determines error information associated with the carrier phase measurement. The wireless measurement entity transmits the RS-P measurement to a position estimation entity, and further transmits the carrier phase measurement and an indication of the error information to the position estimation entity. The position estimation entity determines a position estimate of the UE based on the RS-P measurement, the carrier phase measurement, and the indication of the error information.