TSN Bridge Handover Configuration in 5G Core
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Solution Overview
Problem
Current 5G communication systems face challenges in implementing enhanced features and functionalities, particularly in network slicing and resource management within the 5G core network, which affects the efficiency and flexibility of service delivery and user plane connectivity.
Innovation Solution
The implementation of advanced network functions such as Access and Mobility Management Function (AMF), Session Management Function (SMF), and User Plane Function (UPF) with enhanced functionalities, including registration management, connection management, and traffic steering, to support network slicing and QoS management, allowing for dynamic allocation of resources and flexible service provisioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If handover configuration is provided in RRC Release message for idle/inactive mode mobility, then mobility management for low latency services is improved, but the complexity of RRC message configuration increases
Solution Approach 1:
The handover configuration is provided in advance within the RRC Release message during idle/inactive mode, enabling the UE to perform handover operations immediately without requiring additional signaling exchanges. This preliminary configuration approach reduces latency by preparing handover parameters before they are needed, while the configuration is efficiently packaged within existing message structures to manage complexity.
2Reliability
If TSN bridge configuration is updated during handover, then time synchronization for TSN services is maintained, but the complexity of coordination between 5G core network and TSN bridge increases
Solution Approach 1:
The SMF (Session Management Function) acts as an intermediary between the 5G core network and the TSN bridge, receiving handover notifications and forwarding appropriate configuration updates to the TSN bridge. This intermediary approach maintains time synchronization reliability by ensuring proper coordination, while abstracting the complexity of inter-system communication behind standardized interfaces and procedures.
3Adaptability or versatility
If multiple network functions (AMF, SMF, UPF) are implemented with enhanced functionalities, then service flexibility and resource management are improved, but the overall system complexity increases
Solution Approach 1:
The system is segmented into distinct functional components (AMF for access and mobility management, SMF for session management, UPF for user plane functionality), each with specific enhanced capabilities. This segmentation improves service flexibility by allowing independent optimization and management of each function, while the modular architecture helps manage overall system complexity through clear separation of concerns and standardized interfaces between components.
Data Source
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AI summary
A first base station receives a time sensitive networking (TSN) bridge parameter. A handover request is received from a second base station. A handover acceptance is sent to the second base station based on: the TSN bridge parameter; and the handover request.