Carrier Phase Positioning with PRS/SRS Error Calibration
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Solution Overview
Problem
Existing positioning technologies in 5G-enabled networks struggle to meet the increasing demand for high accuracy positioning due to limitations in current methods such as TDOA, AOA, AOD, and Multi-RTT, necessitating improved precision and error reduction in positioning reference signals.
Innovation Solution
Implementing carrier phase positioning (CPP) technology as an auxiliary tool to enhance positioning accuracy by leveraging phase information of positioning reference signals (PRS) and sounding reference signals (SRS), incorporating measurement periods and error calibration techniques to improve precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing positioning technologies (TDOA, AOA, AOD, Multi-RTT) are used, then positioning functionality is provided, but positioning accuracy is insufficient to meet increasing application requirements
Solution Approach 1:
The patent changes the measurement parameter from traditional time-based or angle-based measurements to carrier phase measurements. By measuring the phase of the carrier signal in positioning reference signals, the system achieves higher positioning accuracy while maintaining reliability through the use of established 5G NR signaling mechanisms
2Measurement precision
If carrier phase measurement is implemented, then positioning accuracy is improved, but measurement complexity and error calibration requirements increase
Solution Approach 1:
The patent implements feedback mechanisms where the wireless communication device reports carrier phase measurements to the network node, which then performs positioning calculations. The system also incorporates error calibration through capability reporting and configuration exchange between device and network, reducing measurement complexity while maintaining high accuracy
Solution Approach 2:
The patent introduces the network node (gNB/LMF) as an intermediary that handles the complex positioning calculations and error calibration processes. The wireless communication device only needs to perform relatively simple carrier phase measurements and report results, significantly reducing device complexity while achieving high positioning accuracy
Data Source
AI summary
The present arrangement relate to systems, methods, and non-transitory computer-readable media for reporting a Channel State Information (CSI) report, the CSI report including a CSI part 1 and a CSI part 2; and communicating, by a wireless communication device with a network, based on the CSI report.