Terminal Failure Recovery Using Preconfigured Cell Group Mobility
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Solution Overview
Problem
Current communication systems lack effective failure recovery methods for terminal devices experiencing Master Cell Group (MCG) or Secondary Cell Group (SCG) failures during selective activation of cell groups, leading to increased latency and signaling overhead, especially in scenarios with frequent cell group changes.
Innovation Solution
A failure recovery method for terminal devices that utilizes configuration information for mobility to perform selective activation of cell groups, allowing for the execution of configuration information even after cell group changes without reconfiguration or reinitialization, thereby reducing signaling overhead and interrupt duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If selective activation of cell groups is configured, then configuration execution is maintained after cell group changes, but failure recovery capability is not provided
Solution Approach 1:
The patent applies preliminary action by pre-configuring mobility configuration information (including target cell group configurations) before failures occur. When MCG/SCG failures are detected, the terminal device can immediately execute the pre-configured target cell group configurations without waiting for network reconfiguration, enabling rapid failure recovery while maintaining configuration execution persistence.
2Reliability
If traditional failure recovery methods are used, then failure recovery is possible, but signaling overhead and interrupt duration increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring mobility configuration information (including target cell group configurations) before failures occur. When MCG/SCG failures are detected, the terminal device can immediately execute the pre-configured target cell group configurations without waiting for network reconfiguration, enabling rapid failure recovery while maintaining configuration execution persistence.
Solution Approach 2:
The patent applies copying by having the terminal device store copies of target cell group configurations in its memory. When failures occur, these pre-copied configurations are directly executed without requiring real-time configuration transmission from the network, significantly reducing signaling overhead and interrupt duration while maintaining reliable failure recovery.
3Adaptability or versatility
If cell group changes occur frequently, then network flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring mobility configuration information (including target cell group configurations) before failures occur. When MCG/SCG failures are detected, the terminal device can immediately execute the pre-configured target cell group configurations without waiting for network reconfiguration, enabling rapid failure recovery while maintaining configuration execution persistence.
Solution Approach 2:
The patent applies copying by having the terminal device store copies of target cell group configurations in its memory. When failures occur, these pre-copied configurations are directly executed without requiring real-time configuration transmission from the network, significantly reducing signaling overhead and interrupt duration while maintaining reliable failure recovery.
Data Source
AI summary
A failure recovery method is performed by a terminal device, includes: performing failure recovery based on configuration information for mobility in response to occurrence of a failure.