NTN Neighbor Cell Priority for Accurate Area Management
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Solution Overview
Problem
Existing wireless communication systems fail to efficiently manage area management in non-terrestrial networks (NTN) with the challenges of addressing the need to locate the UE in a geographic area with the accuracy that is similar to that for a TN.
Innovation Solution
The solution involves determining a priority between an NTN and a terrestrial network (TN) and prioritizing the first neighboring cell list or the second neighboring cell list for a cell selection or reselection operation based on the priority. The first neighboring cell list includes one or more NTN cells and the second neighboring NTN cells. The first neighboring cell list includes one or more NTN cells and the second neighboring cell list includes one or more TN cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE performs traditional cell selection and reselection operations in NTN without priority-based list management, then the UE can consider all neighboring cells equally, but the processing requirements and signaling overhead increase significantly due to the need to locate the UE with TN-like granularity
Solution Approach 1:
The patent segments the neighboring cell list into two separate lists: a first neighboring cell list for NTN cells and a second neighboring cell list for TN cells. This segmentation allows the UE to process each list independently with different priorities, reducing the complexity of handling all cells uniformly while maintaining accurate geographic location capability.
Solution Approach 2:
The patent applies different quality attributes to different cell lists by assigning priorities. The UE is configured to prioritize the first neighboring cell list (NTN cells) over the second neighboring cell list (TN cells) for cell selection and reselection operations. This local quality differentiation allows the system to maintain TN-like location accuracy in NTN while reducing processing requirements by not treating all cells equally.
2Measurement precision
If the UE manages area transitions with TN-like granularity in NTN, then the location accuracy is improved, but the signaling overhead increases
Solution Approach 1:
The patent extracts the area management function specifically for NTN cells from the general cell management process. By creating a separate first neighboring cell list for NTN cells and applying priority-based processing, the system extracts only the necessary information for NTN area transitions, reducing the overall signaling overhead while maintaining TN-like granularity accuracy where needed.
3Adaptability or versatility
If the system provides both NTN and TN neighboring cell lists with equal treatment, then the adaptability is improved, but the processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the UE with priority information about NTN and TN cell lists before cell selection and reselection operations. The UE is configured to prioritize the first neighboring cell list (NTN) over the second neighboring cell list (TN), allowing the UE to process cells in an optimized sequence without needing to evaluate all cells with equal weight, thus reducing processing time while maintaining adaptability.
Data Source
AI summary
Methods and apparatuses for area management in a wireless communication system. A method of operating a UE comprises: receiving a first neighboring cell list and a second neighboring cell list; determining a priority between an NTN and a TN; and prioritizing the first neighboring cell list or the second neighboring cell list in a cell selection or reselection operation based on the priority. The first neighboring cell list includes one or more NTN cells and the second neighboring cell list includes one or more TN cells.