Positioning Information Reporting With Self-Loopback Phase Calibration
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Solution Overview
Problem
The deployment of positioning reference units (PRUs) required for double-difference carrier phase positioning is costly and complex, especially in environments where precise placement is difficult, leading to high maintenance costs and increased complexity.
Innovation Solution
A method involving network devices forming self-loopback using reference signals on reserved resources to facilitate double-difference carrier phase positioning, reducing the need for dense PRU deployment by enabling self-calibration and phase measurement within the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PRUs are deployed densely to improve positioning accuracy, then positioning precision is improved, but device complexity and deployment cost increase
Solution Approach 1:
The network device performs self-loopback by transmitting reference signals to itself through the air interface, enabling self-calibration of phase measurement quantities without requiring external PRUs. This self-service mechanism eliminates the need for dense PRU deployment while maintaining positioning accuracy.
Solution Approach 2:
The patent introduces a self-loopback reference signal as an intermediary that allows the network device to calibrate its phase measurements indirectly by measuring the signal after it has traversed the air interface and been received back, avoiding the need for direct physical PRU deployment.
2Reliability
If PRUs are deployed in complex environments to maintain positioning performance, then positioning reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The network device autonomously performs phase calibration by transmitting and receiving reference signals through the air interface, eliminating the need for manual PRU deployment and site selection in complex environments. This self-service approach significantly improves ease of operation while maintaining positioning reliability.
3Measurement precision
If a large quantity of PRUs are deployed to eliminate non-ideal factors, then measurement precision is improved, but loss of substance increases
Solution Approach 1:
The network device uses its own transmitted reference signal as the measurement target, eliminating the need for additional PRU hardware resources. The self-loopback mechanism allows the same signal to serve both as transmission and measurement reference, reducing resource consumption to zero additional PRUs.
Data Source
AI summary
This disclosure provides a positioning information reporting method, an apparatus, and a computer-readable storage medium. The method includes: A first network device receives a first reference signal from a second network device; and the first network device sends first information to a location management network element, where the first information is determined by measuring the first reference signal, the first information is used to calibrate a phase measurement quantity, and the phase measurement quantity is used to position a terminal device. According to the technical solutions provided in this disclosure, positioning complexity can be reduced.