Temporal Frequency-Dependent Timing Error Groups for 5G Positioning
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Solution Overview
Problem
Current positioning methods in 5G networks face challenges in accurately handling temporal and frequency-dependent timing errors, which affect positioning accuracy and require a large number of timing error groups, leading to increased signaling overhead and ambiguity in identifying the source of errors.
Innovation Solution
The introduction of temporal timing error groups (TEGs) with spatial and frequency-dependent indices allows for flexible handling of timing errors, enabling improved positioning accuracy by grouping measurements based on these indices and canceling errors within a predetermined margin, thereby reducing signaling overhead and clarifying error sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional timing error groups are used without temporal and frequency differentiation, then the system complexity is low, but positioning accuracy deteriorates due to inability to handle temporal and frequency-dependent timing errors
Solution Approach 1:
The patent segments timing error groups into multiple dimensions: temporal TEG indices (first dimension) and frequency-dependent TEG indices (second dimension). This segmentation allows the system to separately track and compensate for timing errors at different time instances and frequency offsets, thereby improving positioning accuracy while maintaining manageable complexity through structured organization.
Solution Approach 2:
The patent introduces a temporal dimension to the traditional timing error groups by adding temporal TEG indices that vary over time. This transforms the static timing error grouping into a dynamic multi-dimensional structure that can capture temporal variations in timing errors, enabling more accurate error compensation without overwhelming system complexity.
2Measurement precision
If the number of timing error groups is increased to handle temporal variations, then positioning accuracy improves, but signaling overhead increases
Solution Approach 1:
By segmenting TEG indices into temporal and frequency-dependent components, the patent enables selective reporting based on which dimension exhibits significant variations. This reduces unnecessary signaling overhead while maintaining positioning accuracy by only reporting indices that reflect actual timing error characteristics.
Solution Approach 2:
The patent implements partial action by using a limited set of temporal TEG indices (e.g., 0 to N-1) and frequency-dependent TEG indices (e.g., 0 to M-1) rather than creating a separate TEG for every possible time-frequency combination. This partial indexing approach suffices to capture timing error variations while avoiding excessive signaling overhead.
3Reliability
If timing error groups are expanded to cover all frequency offsets, then timing error handling completeness improves, but device complexity increases
Solution Approach 1:
The patent applies local quality by making frequency-dependent TEG indices specific to each frequency offset or PRS resource. Instead of using a single global TEG structure, the system assigns localized TEG indices to specific frequency regions or reference signal resources, allowing precise tracking of timing errors where they occur without complicating the entire system structure.
Solution Approach 2:
The patent segments the frequency domain into multiple frequency offsets or PRS resources, each with its own frequency-dependent TEG index. This segmentation allows the system to handle timing errors locally at each frequency point independently, improving completeness of error handling while keeping the overall structure manageable through modular organization.
Data Source
AI summary
Methods and apparatus are provided for determining timing error groups. In one embodiment a method of operating an entity in a communications network is provided. The communications network includes a network node. The method comprising determining at least one potential margin from a predetermined plurality of potential margins. Each potential margin of the plurality of potential margins being a potential maximum margin of timing error difference between two measurements based on positioning related reference signals or transmissions of positioning related reference signals. The method further comprising transmitting an indication of the at least one potential margin to the network node. The method includes determining a margin from the at least one potential margin and performing an action. The method further comprising determining a timing error group, TEG, associated with the action based on the margin.