Terminal Location Calibration Using Server-Side Correction Data
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Solution Overview
Problem
Existing location technologies struggle to achieve the high accuracy required by Industrial Internet of Things (IIoT) scenarios, necessitating improved location calibration methods for terminal devices.
Innovation Solution
A location calibration method where a terminal device receives location calibration information from a server, determines a target calibration value based on its current location information, and adjusts its location data accordingly to enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional location technologies (OTDOA, UTDOA, E-CID) are used, then location service demand is met, but location accuracy is insufficient for IIoT scenarios
Solution Approach 1:
The patent applies preliminary action by pre-calibrating location information at the network side before terminal location determination. The network device obtains calibrated location information of the terminal device through preliminary calibration processes, and stores this calibrated data for subsequent location determination operations, thereby improving location accuracy without affecting service reliability
Solution Approach 2:
The patent introduces an intermediary calibration mechanism where the network device acts as a mediator between the terminal device and the location determination system. The network device obtains calibrated location information through calibration processes and uses this intermediary calibrated data to enhance the accuracy of location determination, resolving the contradiction between accuracy and reliability
2Measurement precision
If location calibration information is obtained and processed, then location accuracy is improved, but system complexity increases
Solution Approach 1:
The patent extracts the location calibration function from the terminal device and relocates it to the network device. The network device obtains calibrated location information through calibration processes and handles the complexity of calibration information processing, while the terminal device simply provides its determined location information, thereby improving location accuracy without significantly increasing overall system complexity
Solution Approach 2:
The terminal device performs self-service by independently determining its own location information using conventional location technologies. This self-determined location information is then provided to the network device for calibration processing, reducing the complexity burden on the terminal device while still achieving improved location accuracy through network-side calibration
Data Source
AI summary
Embodiments of the present disclosure provide a location calibration method and device. A terminal device first receives a location assistance message sent by a location server, where the location assistance message includes location calibration information. Then, the terminal device determines a target location calibration value corresponding to the terminal device in the location calibration information according to currently determined terminal location information, and calibrates the currently determined terminal location information based on the target location calibration value.