Access Control with Differentiated Service for 5G NSA Networks
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Solution Overview
Problem
Current access control mechanisms in wireless networks, particularly for Non-Standalone (NSA) deployments, are inadequate in managing access for 5G networks, as they lack the necessary granularity and flexibility to handle diverse service requirements and congestion management compared to 4G networks.
Innovation Solution
Implementing an access control with differentiated service that uses an access class and group identifier to provide nuanced access barring information, allowing for up to 64 access categories, which can be operator-defined, and is managed by a RAN controller to optimize access based on current and predictive network loads, subscription information, and other criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current access control mechanisms (4G legacy) are used, then device compatibility is maintained, but access control granularity and flexibility are insufficient for 5G diverse service requirements
Solution Approach 1:
The access control mechanism is segmented into multiple dimensions: access class (4G legacy compatibility), service type (5G new service types), and direction (uplink/downlink). This segmentation allows the system to maintain compatibility with 4G devices while providing fine-grained control for 5G diverse services, resolving the contradiction between granularity and complexity.
Solution Approach 2:
The patent introduces additional dimensions to the access control mechanism beyond the traditional single access class parameter. By adding service type and direction dimensions, the system achieves higher granularity for 5G services while maintaining the original access class dimension for 4G compatibility, effectively increasing control flexibility without proportionally increasing complexity.
2Adaptability or versatility
If access control is expanded to support 5G diverse services, then service differentiation capability is improved, but congestion management capability deteriorates
Solution Approach 1:
The patent applies local quality by allowing different access control parameters to be configured for different service types and directions. Each service category can have customized barring factors and thresholds, enabling fine-grained service differentiation while maintaining effective congestion management through localized parameter optimization rather than uniform control.
Solution Approach 2:
The access control parameters are made dynamic and configurable based on network conditions and service requirements. The system can adjust barring factors, thresholds, and allowed services dynamically, enabling both service differentiation and effective congestion management by adapting to real-time network states rather than using static uniform control.
3Measurement precision
If access categories are increased to 64 for finer control, then access control precision is improved, but system complexity increases
Solution Approach 1:
The 64 access categories are segmented into multiple dimensions (access class, service type, direction) rather than being a single flat parameter. This segmentation allows the system to achieve fine-grained control through combination of dimensions while keeping individual dimension values manageable, reducing the cognitive and implementation complexity compared to a single 64-level parameter.
Solution Approach 2:
The access control mechanism is designed to be universal by maintaining compatibility with 4G access class concepts while extending functionality for 5G services. The same framework serves both legacy and new services, reducing system complexity compared to implementing separate control mechanisms for different service types.
Data Source
AI summary
A method, a device, and a non-transitory storage medium are described in which an access control with differentiated service is provided. The service may provide access barring information that includes an access class and a group identifier. The access class and group identifier may constitute an access category identifier that identifies an access category under a unified access control (UAC). The access class and group identifier may correlate to a type of access attempt and/or condition related to the end device. The access class and group identifier may pertain to end device access via a non-standalone deployment.