UE Position Estimation Using Timing Advance for Low-Power Accuracy
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately estimating the position of user equipment (UE) without significantly increasing power consumption or processing overhead, particularly for Reduced Capability (RedCap) UEs, and existing methods may not provide sufficient accuracy for low-power cellular positioning.
Innovation Solution
Utilizing timing advance (TA) information from a serving cell and network mobility measurements from neighbor cells on intra-carrier frequencies to determine a position estimate, which can be used to correct or improve location accuracy in low-power cellular positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing positioning methods are used to estimate UE position, then positioning capability is provided, but location accuracy is insufficient and power consumption increases
Solution Approach 1:
The patent extracts and utilizes timing advance information, which is already available in the wireless communication system, to improve positioning accuracy. By taking out this existing parameter and combining it with network mobility measurements from neighbor cells, the system achieves better location accuracy without requiring additional power-consuming measurements or complex processing
Solution Approach 2:
The timing advance information serves multiple functions: it is used for both uplink synchronization and now also for positioning purposes. This multi-functionality allows the system to improve positioning accuracy without adding separate dedicated positioning mechanisms that would increase power consumption
2Measurement precision
If existing positioning methods are used, then positioning is achieved, but processing overhead increases
Solution Approach 1:
The patent extracts timing advance information that is already being processed by the UE for synchronization purposes. By reusing this existing processing result for positioning, the system avoids duplicating processing operations and reduces overall processing overhead while improving location accuracy
Solution Approach 2:
The patent introduces network mobility measurements from neighbor cells as an intermediary element that bridges the timing advance information with positioning calculations. This intermediary approach allows accurate positioning to be achieved by combining existing parameters rather than requiring complex new processing algorithms
Data Source
AI summary
Aspects of the disclosure are directed to determination a position estimate for a user equipment (UE) based on timing advance (TA) information associated with a serving cell and one or more network mobility measurements associated with one or more neighbor cells on intra-carrier frequencies. In an aspect, the TA information may be used to correct or improve a position estimate that is based on the network mobility measurement(s). In an aspect, the TA information may be utilized as part of a low-power cellular positioning scheme. Such aspects may provide various technical advantages, such as improving location accuracy associated with low-power cellular positioning without increasing power consumption and/or processing overhead (e.g., which may be particularly suitable to Reduced Capability (RedCap) UEs).