Wireless Device Mobility Handling with Conditional Command Suspension
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently handling mobility scenarios where both legacy mobility and conditional mobility commands are received simultaneously, leading to ambiguous handling and potential unnecessary mobility overrides.
Innovation Solution
A method and apparatus for a wireless device to receive a conditional mobility command with a mobility condition and a legacy mobility command, initiate a legacy mobility procedure, and stop evaluating the mobility condition during the legacy mobility procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless device continues to evaluate mobility conditions for conditional mobility while executing legacy mobility procedure, then the conditional mobility evaluation may complete and potentially trigger unnecessary mobility override, but this causes ambiguous handling of RRC configuration and increases system complexity
Solution Approach 1:
The patent extracts the mobility condition evaluation process from the ongoing legacy mobility procedure by introducing a suspension mechanism. When a legacy mobility command is received during conditional mobility evaluation, the device suspends the evaluation temporarily, separates it from the legacy procedure execution, and only resumes if the legacy procedure fails. This extraction eliminates the conflict between simultaneous processes and resolves the ambiguity in RRC configuration handling.
2Reliability
If the wireless device prioritizes legacy mobility procedure by stopping mobility condition evaluation, then ambiguous handling is prevented and unnecessary overrides are reduced, but the adaptability to changing radio conditions during mobility is reduced
Solution Approach 1:
The patent introduces dynamic control of mobility condition evaluation through a suspension-resumption mechanism. The evaluation is not permanently stopped but dynamically adjusted based on the outcome of the legacy mobility procedure. If the legacy procedure succeeds, evaluation remains suspended; if it fails, evaluation resumes. This dynamic approach maintains reliability during successful legacy mobility while preserving adaptability for fallback scenarios.
3Speed
If the wireless device evaluates mobility conditions continuously during legacy mobility procedure, then the system responds quickly to changing radio conditions, but this causes potential unnecessary mobility overrides and ambiguous RRC configuration handling
Solution Approach 1:
The patent applies preliminary action by suspending the mobility condition evaluation before the legacy mobility procedure completes. This preventive measure stops the evaluation early when a legacy mobility command is detected, avoiding the potential conflict and ambiguous handling that would occur if evaluation continued. The suspension is a preliminary protective action that prevents reliability issues before they can manifest.
Data Source
AI summary
The present disclosure relates to a mobility handling in 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 conditional mobility command for a target cell including a mobility condition, and a legacy mobility command; initiating a legacy mobility procedure upon receiving the legacy mobility command; and stopping an evaluation of the mobility condition during the legacy mobility procedure after the legacy mobility procedure is initiated.