UE Configuration Update via Non-CAG Access
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Solution Overview
Problem
UEs configured with an empty CAG list and a CAG only indication cannot access the network, preventing configuration data updates due to lack of accessible CAG cells.
Innovation Solution
The access and mobility management function apparatus updates UE configuration data by removing the CAG only indication and providing a default CAG cell or non-CAG cell access, allowing the UE to access the network even when the CAG list is empty.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE is configured with CAG only indication and empty CAG list, then network security is improved, but network accessibility deteriorates
Solution Approach 1:
The patent implements dynamic state transitions for the UE, switching between CAG-only mode (high security) and non-CAG mode (high accessibility). The network can dynamically update the UE's configuration to change its access mode based on current needs, allowing the system to adapt between security and accessibility requirements.
Solution Approach 2:
The patent changes the CAG only indication parameter from true to false through network updates. This parameter change transforms the UE's access restrictions, enabling it to access non-CAG cells for configuration updates while maintaining the ability to return to CAG-only mode when security is prioritized.
2Reliability
If the UE is restricted to CAG only access, then network security is improved, but configuration update capability deteriorates
Solution Approach 1:
The patent enables the UE to perform configuration updates in advance when it still has valid CAG access. The network can proactively update the UE's configuration data, CAG list, or CAG only indication before the UE becomes completely restricted, ensuring configuration capabilities are maintained or updated before security restrictions take full effect.
3Reliability
If the CAG list is kept empty, then network security is improved, but device functionality deteriorates
Solution Approach 1:
The patent makes the CAG list dynamic rather than static. The network can update the CAG list from empty to containing specific CAG identifiers based on operational requirements. This allows the UE to transition between having no CAG access (security mode) and having specific CAG access (functionality mode), maintaining both security and adaptability as needed.
Data Source
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AI summary
A configuration data update method, an apparatus, and a system are provided. The method includes: When configuration data for a terminal apparatus is first configuration data, where the first configuration data includes a first restriction indication and an empty closed access group CAG list, the first restriction indication is used to indicate the terminal apparatus to access a network through a closed access group CAG, and the CAG list is a set of CAG IDs that the terminal apparatus is allowed to access, an access and mobility management function apparatus configures the terminal apparatus to be in a state in which the terminal apparatus is allowed to access the network not only through a CAG in the CAG list. When the configuration data for the terminal apparatus is updated to second configuration data, where a CAG list in the second configuration data is not empty or does not include the first restriction indication, the access and mobility management function apparatus sends the second configuration data to the terminal apparatus.