Dynamic Access Barring for Wireless Network Traffic Management
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Solution Overview
Problem
Current access class barring (ACB) techniques in wireless networks are inflexible and struggle to tailor access control based on the diverse needs of different operators, relying on static methods that do not effectively manage traffic overload or prioritize connections.
Innovation Solution
Implementing dynamic access barring by configuring user equipment (UE) to receive a control parameter from the network, allowing it to selectively bar access based on this parameter, enabling fine-grained control and differentiation among UEs and network slices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static access class barring (ACB) techniques are used, then traffic overload is reduced through predefined statistical methods, but the system lacks flexibility to tailor access control based on different operator needs
Solution Approach 1:
The patent transforms static ACB into a dynamic system where the network node can send different control parameters (e.g., barring factors, time windows) to different UEs based on real-time conditions and operator policies. This allows access barring to adapt dynamically to varying network states and operator requirements without requiring complex reconfiguration of the entire system.
Solution Approach 2:
The invention introduces controllable parameters (barring factor, time window duration, slice identifiers) that can be adjusted by the network node to modify access barring behavior. By changing these parameters dynamically, the system achieves flexibility in tailoring access control to different operator needs and network conditions while maintaining a relatively simple underlying mechanism.
2Adaptability or versatility
If dynamic access control is implemented, then tailored access policies for different operators are enabled, but signaling overhead between network and UE increases
Solution Approach 1:
The patent applies different control parameters to different UEs or UE groups based on their specific characteristics, network slice affiliations, and operator policies. Instead of uniform signaling to all UEs, the network node selectively sends control parameters only to relevant UEs that need dynamic access control, thereby reducing overall signaling overhead while achieving customized access policies where needed.
Solution Approach 2:
The system implements dynamic access control partially - only for UEs and network slices that require it - rather than applying it universally. This selective approach enables tailored access policies for specific operator needs while avoiding unnecessary signaling overhead for UEs that can operate with standard static ACB mechanisms.
3Productivity
If per-UE access control is implemented, then fine-grained traffic management is achieved, but processing complexity at the network node increases
Solution Approach 1:
The patent segments the network into multiple network slices, each with its own access control parameters and policies. By organizing UEs and resources into slices, the network node can manage access control in a structured manner, processing decisions for each slice independently rather than handling all UEs uniformly, which reduces overall processing complexity while maintaining fine-grained control.
Solution Approach 2:
The network node uses parameter-based control (barring factors, time windows, slice identifiers) that can be quickly computed and applied without complex decision logic. This parameter-driven approach enables efficient per-UE and per-slice access control with relatively simple processing, as the node only needs to compare current conditions against predefined parameter thresholds and policies.
Data Source
AI summary
The UE(130) is configured to receive a control parameter (5013) from a network in a first connection with the network. The UE(130) is further configured to selectively bar access of the UE(130) to the network for a subsequent second connection based on the control parameter (5013).