Cell Reselection Using Priority Thresholds in Wireless Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing cell reselection, particularly in multi-beam operations and when prioritizing higher priority cells such as non-public network (NPN) cells, as existing methods do not effectively handle scenarios where the number of good beams for an NPN cell may not be the highest but still within a threshold range of the highest ranked cell.
Innovation Solution
A method and apparatus for a wireless device to receive a connection release message, a threshold range configuration, and information on higher priority cells, allowing it to identify and reselect to a cell within the threshold range of the highest ranked cell if its ID is included in the list of higher priority cells, even if it does not have the highest number of good beams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cell reselection is performed based on the highest number of good beams, then beam quality is optimized, but higher priority cells (e.g., NPN cells) cannot be selected when their beam count is lower
Solution Approach 1:
The patent introduces a priority parameter (cell priority information) that modifies the traditional cell reselection criterion. Instead of solely relying on beam count, the system now considers both beam quality and cell priority, allowing higher priority cells to be selected even with fewer beams by adjusting the selection parameters
2Measurement precision
If strict threshold range is applied for cell reselection, then measurement precision is maintained, but cell reselection to higher priority cells is restricted
Solution Approach 1:
The patent applies different selection criteria to different cells based on their priority status. For higher priority cells, the system relaxes the threshold requirement, allowing selection within a broader range. This local differentiation enables flexible operation for important cells while maintaining strict measurement standards overall
3Stability of the object's composition
If cell reselection prioritizes beam count, then connection stability is improved, but ability to access higher priority networks is reduced
Solution Approach 1:
The patent pre-configures priority information for different cells before reselection occurs. This preliminary classification allows the system to quickly identify higher priority cells and apply appropriate selection criteria, enabling efficient network access while maintaining connection stability through the dual-criterion approach
Data Source
AI summary
The present disclosure relates to a cell reselection in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system, the method comprises: receiving a connection release message from a network upon which the wireless device leaving a connected state; receiving a configuration of a threshold range from the network; receiving information for identities (IDs) of higher priority cells from the network; identifying a highest ranked cell among a plurality of neighbor cells based on a result of a measurement on the plurality of neighbor cells; identifying one or more neighbor cells among the plurality of neighbor cells whose ranking value is within the threshold range of a ranking value of the highest ranked cell; and performing a cell reselection to a cell among the one or more neighbor cells based on that an ID of the cell is included in the IDs of higher priority cells.