5G Access Category Management Objects for UE Configuration
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Solution Overview
Problem
The 5G network faces challenges in efficiently managing access control to ensure stable operation, optimal resource allocation, and compliance with regulatory requirements for critical communications and emergency calls, given the diverse and conflicting service requirements across various usage scenarios.
Innovation Solution
The implementation of access category management objects that support configurations for user equipment (UE) by the core network, enabling efficient access category configurations, signaling methods for access barring parameters, and access control architectures to manage access control functions within the UE protocol sublayers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If access control is implemented to manage diverse service requirements, then network stability and resource allocation are improved, but device complexity and signaling overhead increase
Solution Approach 1:
The access control functionality is segmented into distinct components: access control parameters are separated from service parameters, and different types of parameters (barring parameters, prioritization parameters, QoS parameters) are independently managed. This segmentation allows the UE to process and apply access control rules without handling the entire complexity of all service parameters simultaneously, thus improving network stability while managing device complexity.
Solution Approach 2:
The patent introduces intermediary structures such as access control information elements and parameter mapping mechanisms that mediate between the core network and UE. These intermediaries translate complex network control decisions into manageable UE-executable actions, reducing the complexity burden on the device while maintaining reliable network control.
2Manufacturing precision
If comprehensive access category configuration is provided, then access control precision is improved, but signaling overhead and configuration time increase
Solution Approach 1:
The patent implements partial configuration mechanisms where the network can provide access control parameters selectively based on the UE's needs and network conditions. Instead of always providing complete access category configurations, the system can provide only the necessary parameters (e.g., barring parameters for specific access categories), thereby reducing configuration time and signaling overhead while maintaining sufficient access control precision for the given scenario.
Solution Approach 2:
Access control parameters are pre-configured in the UE during initial setup or previous sessions, allowing the UE to make access control decisions without requiring real-time comprehensive configuration. This preliminary action reduces the time needed for on-demand configuration while maintaining precise access control through pre-established parameter sets.
3Reliability
If access control parameters are signaled fully, then access control reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by providing different levels of parameter detail depending on the specific access control scenario and UE capability. Critical parameters (such as barring parameters for emergency calls) are signaled with full precision, while less critical parameters use simplified representations. This selective signaling approach maintains access control reliability for essential functions while reducing overall signaling overhead.
Solution Approach 2:
The system dynamically adjusts the level of parameter signaling based on network conditions and UE state. When access control reliability is most critical (e.g., during congestion or for high-priority services), more comprehensive parameters are signaled. Under normal conditions, simplified parameter sets are used, reducing signaling overhead. The parameter signaling level changes adaptively to balance reliability and overhead.
Data Source
AI summary
Access category management objects may be configured for use in support of access category configurations of a user equipment (UE). Various methods for a UE configuration with access categories are disclosed. Signaling methods by a radio access network of access barring parameters such as a signaling method for a partial list of access barring parameters with explicit signaling of access category indexes and a signaling method for a full list of access barring parameters where access categories are signaled using a bitmap are disclosed. Access control parameters and an access control architecture in terms of access control function distribution within the UE protocol sublayers, solutions that address the impact of access control in a connected mode on a buffer status report, logical channel prioritization and flow control between the UE AS and UE NAS, and details regarding access barring checks are also disclosed.