Conditional Handover Link Failure Information Management
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Solution Overview
Problem
In communication technologies, particularly during handover processes in 4G LTE and 5G NR, link failures occur due to incomplete understanding of network environments, as existing methods only store the latest link failure information, leading to removal of previous data, which hampers network optimization.
Innovation Solution
A method and electronic device that determine a trigger condition for conditional handover failures, deciding whether to remove stored link failure information based on these conditions, ensuring accurate reporting of network environments to the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the terminal stores only the latest link failure information, then the storage space is saved and the processing is simplified, but the network optimization accuracy deteriorates because previous link failure information is lost
Solution Approach 1:
The patent changes the parameter of information retention by introducing trigger conditions that determine whether to clear stored link failure information. Instead of always clearing or never clearing, the system dynamically adjusts information retention based on specific conditions (handover success, radio link recovery, etc.), thus resolving the contradiction between saving storage and maintaining optimization accuracy.
2Measurement precision
If the terminal removes stored link failure information when a new link failure occurs, then the latest information is always available, but the base station cannot accurately determine the network environment because historical failure data is lost
Solution Approach 1:
The patent makes the information retention strategy dynamic by introducing trigger conditions that are evaluated based on the current network state. The decision to clear or retain link failure information is no longer static but adapts to different scenarios (handover success, radio link recovery, conditional handover failure), thus maintaining both information accuracy and historical context.
3Reliability
If the terminal retains all link failure information indefinitely, then the network optimization data is comprehensive, but the device complexity increases and storage resources are consumed
Solution Approach 1:
The patent implements a selective discarding mechanism where link failure information is retained only as long as it remains relevant to network optimization. The trigger condition system automatically discards information when it no longer serves its purpose (e.g., after successful handover or recovery), thus balancing data completeness with resource management and reducing long-term storage complexity.
Data Source
AI summary
A method for processing link failure information includes in response to a conditional handover failure, determining by a terminal, a trigger condition of the conditional handover; and determining by the terminal, whether to remove stored link failure information based on the trigger condition.