S-CPAC Configuration with SK-Counter List for 5G Mobility
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Solution Overview
Problem
Current wireless communication systems, such as 5G NR, face challenges in network mobility management, particularly in efficiently configuring and managing primary secondary cell (PSCell) additions and changes (S-CPAC) to optimize user equipment (UE) performance.
Innovation Solution
A method for configuring subsequent conditional PSCell addition/change (S-CPAC) in UE, involving receiving an S-CPAC configuration from a source cell, storing it along with a secondary key (SK)-counter list, and upon satisfying specific conditions, selecting and applying an SK-counter entry to configure the UE for switching between PSCells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional PSCell addition/change configuration is used, then network mobility management is simple, but network flexibility and UE performance optimization are limited
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple PSCell candidates with their associated conditions and SK-counter entries before actual switching is needed. The UE stores these configurations in advance and evaluates conditions when switching events occur, enabling rapid response without complex real-time configuration procedures.
Solution Approach 2:
The patent segments the PSCell configuration into multiple independent entries, each with its own set of conditions and SK-counter values. This allows the UE to selectively apply different PSCell configurations based on satisfied conditions, providing flexibility while maintaining manageable complexity through structured organization of configuration parameters.
2Reliability
If dynamic PSCell switching is enabled to improve mobility management, then UE performance is optimized, but configuration and management complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the UE continuously monitors condition parameters (such as measurement results) and uses this feedback to determine when PSCell switching should be executed. The SK-counter mechanism provides feedback on configuration usage state, enabling reliable automated decision-making for mobility management without requiring complex manual configuration.
Solution Approach 2:
The UE performs self-service by autonomously evaluating configured conditions, selecting appropriate PSCell configurations, and executing switching procedures without requiring continuous network intervention. The pre-stored SK-counter entries and condition evaluations enable the UE to manage its own mobility optimization, reducing configuration management complexity.
3Adaptability or versatility
If multiple PSCell configurations are stored and managed, then switching flexibility is improved, but storage and processing requirements increase
Solution Approach 1:
The patent applies local quality by organizing configuration data into structured entries with specific attributes (PSCell identity, conditions, SK-counter values) tailored to each individual PSCell candidate. This localized organization allows efficient storage and retrieval of only the necessary configuration parameters for each cell, reducing overall data volume compared to comprehensive centralized configuration storage.
Data Source
AI summary
A method for configuring a subsequent conditional primary secondary cell addition/change (S-CPAC) to a UE is provided. The method receives from a source cell an S-CPAC configuration that includes an RRC configuration for a primary secondary cell (PSCell) and a set of conditions for switching to the PSCell. The method receives a secondary key (SK)-counter list associated with the S-CPAC. The list includes one or more SK-counter entries arranged in an order. The method stores the S-CPAC configuration and the SK-counter list. After determining that one or more of the set of conditions are satisfied, the method selects a first SK-counter entry of the SK-counter list and configures the UE with the S-CPAC configuration to switch from another PSCell to the PSCell. In configuring the UE with the S-CPAC configuration, the first SK-counter entry is applied. The method then removes the first SK-counter entry from the SK-counter list.