Conditional Handover Measurement Cleanup After Wireless Mobility
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently handling measurement configurations after mobility events, particularly in conditional handovers, leading to unnecessary and invalid handling of measurement configurations.
Innovation Solution
The proposed solution involves methods and apparatus for managing measurement configurations after mobility, including the ability for a wireless device to remove or change the condition type of measurement configurations used for conditional handovers, ensuring that mobility commands are only executed when a target cell configuration is satisfied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement configurations are maintained after conditional handover, then measurement continuity is preserved, but unnecessary invalid handling occurs consuming system resources
Solution Approach 1:
The patent applies the discarding and recovering principle by removing measurement configurations from the source cell after conditional handover execution. When the UE successfully hands over to a target cell, the measurement configurations associated with the source cell are discarded to prevent unnecessary processing. This resolves the contradiction by eliminating invalid measurement handling (reducing resource consumption) while maintaining necessary measurement continuity for the target cell through proper configuration transfer and setup.
2Adaptability or versatility
If multiple measurement configurations are maintained for conditional handover candidates, then handover flexibility is improved, but device complexity increases
Solution Approach 1:
The patent applies the extraction principle by separating and removing measurement configurations specific to source cells after conditional handover. Instead of maintaining all measurement configurations indefinitely, the system extracts and removes only those associated with source cells that are no longer relevant. This reduces device complexity by eliminating redundant configuration management while preserving handover flexibility through maintained configurations for active target cells.
3Reliability
If measurement configurations are not cleaned up after mobility, then configuration validity is maintained, but processing overhead increases
Solution Approach 1:
The patent applies preliminary action by proactively removing measurement configurations associated with source cells immediately after conditional handover execution. Rather than waiting for configurations to become invalid or managing them indefinitely, the system performs the cleanup action in advance. This maintains configuration validity by ensuring only relevant configurations remain active while significantly improving processing efficiency by eliminating unnecessary measurement handling overhead.
Data Source
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AI summary
The present disclosure relates to performing communication after mobility wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a network, a measurement configuration comprising a measurement identity (ID); receiving, from a network, a conditional mobility command for a target cell, wherein the conditional mobility command comprises a mobility condition for the target cell, and the mobility condition for the target cell is related to the measurement ID; performing a mobility to the target cell based on the conditional mobility command for the target cell; and removing the measurement ID after performing the mobility to the target cell.