Timing Error Group Assistance Data for 5G Positioning Accuracy
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G networks, face challenges in efficiently managing transmit timing errors in positioning reference signals, which affect the accuracy and reliability of wireless positioning measurements.
Innovation Solution
The method involves a network node receiving and processing assistance data containing transmit timing error group (Tx TEG) identifiers for positioning reference signal resources, allowing for precise positioning measurements and accurate transmission of these signals based on the received identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmit timing errors are not corrected in positioning reference signals, then the system operation remains simple, but the positioning measurement accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing timing error correction values in lookup tables before the positioning measurement process. The network node receives assistance data containing timing error information in advance, and the user equipment uses these pre-provided values to correct timing errors during positioning measurements, thereby improving accuracy without requiring complex real-time error correction computations.
Solution Approach 2:
The patent introduces an intermediary approach by using assistance data as a mediator between the network node and user equipment. The assistance data contains pre-processed timing error information that bridges the gap between raw signal transmission and accurate positioning measurements, allowing the user equipment to correct timing errors using intermediate correction values rather than directly processing complex timing adjustments.
2Measurement precision
If transmit timing errors are corrected using complex real-time computations, then positioning accuracy improves, but processing time and computational complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating timing error correction values and storing them in lookup tables before the positioning measurement process. The network node receives assistance data containing timing error information in advance, and the user equipment uses these pre-provided values to correct timing errors during positioning measurements, thereby improving accuracy without requiring complex real-time error correction computations.
Solution Approach 2:
The patent uses copying by creating lookup tables that store pre-computed timing error correction values. Instead of performing complex real-time computations, the user equipment copies relevant correction values from these pre-generated tables during positioning measurements, significantly reducing processing time while maintaining positioning accuracy.
3Measurement precision
If assistance data includes detailed timing error information for all PRS resources, then positioning measurement accuracy improves, but the amount of data to be processed increases
Solution Approach 1:
The patent applies segmentation by dividing the assistance data into structured components, specifically organizing timing error information into transmit timing error groups (TEGs) that are associated with specific sets of positioning reference signal resources. This segmentation allows the network to provide detailed timing error corrections only where needed, reducing the overall data volume while maintaining positioning accuracy for the affected PRS resources.
Solution Approach 2:
The patent introduces local quality by providing timing error correction information at the local level for specific PRS resource sets rather than uniformly across all resources. The assistance data includes timing error details only for the specific TEGs and associated PRS resources that require correction, allowing precise positioning where needed while minimizing unnecessary data transmission for resources without timing errors.
Data Source
AI summary
Disclosed are techniques for wireless positioning. In an aspect, a first network node. In an aspect, the first network node receives assistance data for a plurality of positioning reference signal (PRS) resources transmitted by a second network node, the assistance data including one or more transmit timing error group (Tx TEG) identifiers, each Tx TEG identifier of the one or more Tx TEG identifiers associated with one subset of one or more subsets of the plurality of PRS resources, and performs one or more positioning measurements of at least one subset of the one or more subsets of the plurality of PRS resources based on the one or more Tx TEG identifiers.