Cell Barring Status for Multi-Core Network Selection
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Solution Overview
Problem
Current wireless communication networks face challenges in configuring Closed Subscriber Groups (CSGs) and cell barring effectively, particularly in next-generation networks where cells may connect to multiple core networks and private networks, leading to inflexible cell selection and reselection processes.
Innovation Solution
The implementation of systems and methods that allow user equipment (UE) to determine cell campability based on barred cell status information, which includes information about connected and non-connected core networks, enabling dynamic cell selection and reservation mechanisms for Public Land Mobile Networks (PLMNs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cell is configured to connect to multiple core networks, then network coverage and service capability are improved, but cell selection and reselection complexity increases
Solution Approach 1:
The patent segments cell barring information by core network type, introducing separate barring indicators for EPC-based cells and 5GC-based cells. This allows the UE to independently evaluate and select cells based on its supported core network types, simplifying the decision process while maintaining support for multiple core networks.
Solution Approach 2:
The patent implements dynamic cell barring configurations that can be independently adjusted for different core network types. The network can selectively bar EPC cells or 5GC cells based on deployment scenarios, enabling flexible adaptation to various network configurations without increasing UE complexity.
2Measurement precision
If cell barring information is provided for all PLMNs, then PLMN selection accuracy is improved, but information overhead increases
Solution Approach 1:
The patent introduces a universal cellBarred parameter that applies to all PLMNs operating on a frequency, combined with core network type indicators. This allows a single information element to convey barring status for multiple PLMNs simultaneously, reducing redundancy while maintaining accurate PLMN selection capability.
Solution Approach 2:
The patent provides partial PLMN-specific information by including only the necessary core network type indicators and barring status in system information broadcasts. This selective information provision reduces overhead while sufficient for UE to perform accurate PLMN selection based on its subscription and capability.
Data Source
AI summary
A user equipment (UE) includes one or more non-transitory computer-readable media having computer-executable instructions embodied thereon, at least one processor coupled to the one or more non-transitory computer-readable media, and configured to execute the computer-executable instructions to: determine, before selecting a cell, whether the cell is non-campable for the UE based on barred cell (cellBarred) status information received through system information from the cell, the cell connected to a first core network and not connected to a second core network; and perform cell selection of another cell after it is determined that the cell is non-campable for the UE based on the cellBarred status information; wherein the cellBarred status information comprises information regarding the first core network and information regarding a plurality of Public Land Mobile Networks (PLMNs) operating the first core network.