IAB-Node Migration Security Configuration
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Solution Overview
Problem
During inter-IAB-donor-CU migration or topology adaptation, existing techniques cause interruptions in services for terminal equipment due to failures in integrity verification and connection reestablishment, particularly when switching between different IAB donor nodes, leading to suboptimal user experiences.
Innovation Solution
A migration method and apparatus for IAB-nodes that involve storing and applying security configuration information, including a target IAB donor node's security settings, to ensure seamless transitions and correct security configurations during node migrations, thereby minimizing service interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing techniques are used for inter-IAB-donor-CU migration, then migration between different IAB donor nodes is enabled, but service interruptions occur due to integrity verification failures and connection reestablishment
Solution Approach 1:
The patent applies preliminary action by pre-configuring security parameters and performing integrity verification preparations before the actual migration occurs. The source IAB donor node provides security configuration information to the target IAB donor node in advance, and the terminal equipment is prepared with necessary security context before handover, preventing integrity verification failures during migration.
Solution Approach 2:
The patent uses the source IAB donor node as an intermediary to transfer security configuration information to the target IAB donor node. This intermediary mechanism ensures that the terminal equipment maintains continuous security context during migration, avoiding integrity verification failures and connection reestablishment.
2Device complexity
If security configuration is not pre-applied during migration, then migration process is simplified, but integrity verification fails causing connection reestablishment
Solution Approach 1:
The patent applies preliminary action by pre-configuring security parameters before migration. The source IAB donor node provides security configuration information to the target IAB donor node in advance, and the terminal equipment is prepared with necessary security context before handover, preventing integrity verification failures during migration.
Solution Approach 2:
The patent implements feedback mechanisms where the target IAB donor node receives and validates security configuration information from the source IAB donor node before completing the migration. This feedback loop ensures that security parameters are correctly configured and verified, maintaining integrity verification success without adding significant complexity.
Data Source
AI summary
A migration apparatus for an (integrated access and backhaul) IAB-node, applicable to a first terminal equipment, the first terminal equipment comprising a terminal equipment served by a first IAB-node and/or a terminal equipment served by a descendant IAB-node of the first IAB-node includes a first memory configured to store first configuration information, the first configuration information comprising security configuration configured by a target IAB donor node, and first applying processor circuitry configured to apply the security configuration in a stored first configuration information when first indication information is obtained or the security configuration in the stored first configuration information comprises security configuration corresponding to a selected or reselected cell.