Multi-Cell Timing Advance Positioning for Simple Terminals
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Solution Overview
Problem
Existing positioning methods require terminal devices to support complex positioning operations, which increases performance requirements and complexity, limiting their applicability to devices with simpler hardware.
Innovation Solution
Positioning terminal devices using multiple Timing Advances (TAs) corresponding to multiple cells, obtained through random access, which is a function most devices support, reducing performance requirements and enabling positioning even for devices with simpler hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing positioning methods are used, then positioning accuracy can be achieved, but terminal device performance requirements increase and device complexity increases
Solution Approach 1:
The patent introduces a positioning server as an intermediary that performs complex positioning calculations on the network side instead of requiring the terminal device to perform complex operations. The server receives timing advance information from the terminal and computes positioning results using server-side resources, thereby reducing terminal device complexity while maintaining positioning accuracy.
Solution Approach 2:
The patent replaces terminal-device-based positioning calculations with network-side calculations. Instead of the terminal device performing complex positioning algorithms, the positioning server performs these calculations using network resources, effectively substituting the mechanical/computational burden from the terminal to the network infrastructure.
2Measurement precision
If complex positioning operations are required, then positioning accuracy improves, but adaptability to simple devices decreases
Solution Approach 1:
The positioning server acts as an intermediary that handles complex calculations, allowing simple terminal devices to achieve accurate positioning without requiring sophisticated onboard processing capabilities. The server compensates for the limited computational power of simple devices by performing the heavy lifting remotely.
Solution Approach 2:
The patent enables simple devices to access positioning services by copying the functionality of complex positioning systems to the network side. Instead of each device needing full positioning capabilities, the system provides positioning as a copied service through the server, accessible to any device with basic communication capabilities.
3Measurement precision
If terminal devices enter positioning operations process, then positioning can be achieved, but positioning latency increases
Solution Approach 1:
The patent performs preliminary actions by collecting timing advance information from multiple cells during the normal random access process, which occurs continuously and routinely. This preliminary data collection eliminates the need for separate positioning operation entry, as the necessary measurements are already gathered in the background during standard device operation.
Solution Approach 2:
The positioning server continuously processes timing advance information as it becomes available from the random access process, rather than waiting for a dedicated positioning operation to be initiated. This continuous processing approach eliminates latency by keeping the positioning function active and responsive throughout the communication process.
Data Source
AI summary
Provided in the present application are a positioning method, a terminal device, and a network device. One example method includes: transmitting by a terminal device, a plurality of sequences to base stations of a plurality of cells; and receiving, by the terminal device, a plurality of TAs corresponding to the plurality of cells.