NR Terminal Positioning Using Multi-Measurement Angle Fusion
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Solution Overview
Problem
The existing 3GPP terminal positioning methods based on New Radio (NR) signals in Rel-16 suffer from low positioning accuracy due to reliance on single measurement types in NR DL-TDOA, NR DL-AoD, NR UL-TDOA, and NR UL-AoA, and NR Multi-RTT technologies.
Innovation Solution
Enhancing terminal positioning by incorporating multiple types of measurements, including downlink and uplink reference signal angle information, and additional path angle measurements, and utilizing a positioning server to integrate these measurements for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If single measurement type is used in NR positioning technologies, then device complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent combines multiple measurement types (downlink angle measurements from base station and uplink angle measurements from terminal) into a unified positioning framework. The positioning server integrates these different measurement types to calculate terminal position, thereby improving positioning accuracy while managing complexity through centralized processing.
Solution Approach 2:
The positioning server acts as an intermediary that receives and integrates measurements from both the base station and terminal. It processes the downlink positioning reference signal angle information and uplink sounding reference signal angle information, then performs location estimation, thereby resolving the complexity of multi-measurement integration.
2Measurement precision
If multiple measurement types are integrated, then positioning accuracy is improved, but information processing complexity increases
Solution Approach 1:
The positioning server serves as an intermediary that centralizes the processing of multiple measurement types. It receives downlink positioning reference signal angle information from the base station and uplink sounding reference signal angle information from the terminal, then performs integrated location estimation, thereby managing information processing complexity through centralized architecture.
Solution Approach 2:
The system enables self-service by having the terminal perform self-measurement of uplink angle information and the base station perform self-measurement of downlink angle information. Each entity independently measures and reports their respective data, reducing the processing burden on any single component while improving overall positioning accuracy.
Data Source
AI summary
The present application discloses a terminal positioning method and device. In the present application, a positioning server receives positioning measurement information reported by a terminal, acquires downlink-positioning reference signal angle information corresponding to downlink-positioning reference signal resource information reported by a base station, and positions the terminal according to the positioning measurement information reported by the terminal and the downlink-positioning reference signal angle information reported by the base station. The positioning measurement information reported by the terminal includes the downlink-positioning reference signal resource information and a downlink-positioning reference signal measurement corresponding to the downlink-positioning reference signal resource information.