Terminal RRC Control for Redundant SpCell Evaluation
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Solution Overview
Problem
The existing mobility technologies in 5G Advanced (Release 18 and beyond) lack efficient communication control mechanisms for handover and PSCell change, particularly in the context of conditional reconfigurations, which have not been fully discussed.
Innovation Solution
A terminal apparatus and integrated circuit that manage radio resource control (RRC) signaling by maintaining an entry list with conditional reconfiguration information, adding or modifying entries based on received signaling, and determining if candidate special cells (SpCells) are identical to the currently configured SpCell, thereby optimizing communication control processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal apparatus evaluates execution conditions for all candidate SpCells in conditional reconfiguration, then the mobility control is comprehensive and reliable, but the processing time and complexity increase
Solution Approach 1:
The patent extracts and eliminates redundant execution condition evaluations by identifying when candidate SpCell equals currently configured SpCell. This removes unnecessary processing steps while preserving the essential mobility control functionality, directly resolving the contradiction between comprehensive evaluation and processing efficiency.
Solution Approach 2:
The patent applies partial action by evaluating execution conditions only for candidate SpCells that differ from the currently configured SpCell. This selective approach avoids excessive evaluation of identical cells, reducing processing time while maintaining sufficient mobility control reliability for actual handover scenarios.
2Reliability
If the terminal apparatus processes all conditional reconfiguration entries without optimization, then the mobility control is thorough, but the communication control efficiency decreases
Solution Approach 1:
The patent extracts redundant processing operations by identifying and skipping conditional reconfiguration entries where candidate SpCell matches currently configured SpCell. This eliminates wasted processing cycles while preserving thorough mobility control for actual handover cases, improving communication control efficiency.
Solution Approach 2:
The patent performs preliminary comparison between candidate SpCell and currently configured SpCell before executing full conditional reconfiguration processing. This preliminary action filters out redundant entries in advance, allowing the system to maintain thorough control where needed while improving overall processing efficiency.
3Reliability
If the terminal apparatus evaluates execution conditions for identical SpCells, then no handover loops are detected, but unnecessary processing occurs
Solution Approach 1:
The patent extracts and removes redundant execution condition evaluations for identical SpCells from the processing flow. By eliminating these unnecessary evaluations, the system reduces processing complexity while maintaining handover loop detection capability through the SpCell identity comparison mechanism.
Solution Approach 2:
The patent applies partial action by performing execution condition evaluation only when candidate SpCell differs from currently configured SpCell. This selective processing reduces overall processing complexity while maintaining sufficient reliability for detecting actual handover loops in legitimate mobility scenarios.
Data Source
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AI summary
A terminal apparatus determines whether a candidate special cell (SpCell) associated with a conditional reconfiguration information element of an entry included in an entry list is identical to a special cell (SpCell) currently configured for the terminal apparatus, and does not cause an execution condition to be evaluated, the execution condition being included in the entry including the conditional reconfiguration information element of which the associated candidate SpCell is identical to the SpCell currently configured for the terminal apparatus.