HR-SBO Data Session Routing for Roaming Edge Services
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing data sessions in home routed session breakout (HR-SBO) mode, particularly in scenarios where edge computing services are applied to roaming user equipment, requiring efficient traffic routing management across different networks.
Innovation Solution
A method and apparatus are provided to manage data sessions in HR-SBO mode by enabling a home session management function (H-SMF) to influence traffic routing by providing information to a visited session management function (V-SMF), which configures user plane functions based on policy and charging control rules, ensuring seamless traffic management across networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data traffic is routed through home network (HPLMN) for roaming UE, then network security and policy control are improved, but traffic routing efficiency and access to local edge services deteriorate
Solution Approach 1:
The patent segments the data session into control plane and user plane functions across different networks. The H-SMF in HPLMN manages control plane functions for security and policy control, while the V-SMF in VPLMN manages user plane functions for efficient local traffic routing. This segmentation allows simultaneous achievement of security (through H-SMF) and routing efficiency (through V-SMF).
Solution Approach 2:
The H-SMF acts as an intermediary that provides traffic routing influence information to the V-SMF. This intermediary mechanism allows the HPLMN to maintain control over traffic routing policies while enabling the VPLMN to execute efficient local routing decisions, thus resolving the contradiction between centralized security control and distributed routing efficiency.
2Ease of operation
If HR session is broken out to local data network for edge computing service, then access to edge services is improved, but traffic routing control and management complexity deteriorate
Solution Approach 1:
The H-SMF performs preliminary action by providing traffic routing influence information to the V-SMF before actual traffic routing occurs. This advance provision of routing information enables the V-SMF to configure user plane functions appropriately for edge service access, simplifying the overall management complexity while maintaining ease of service access.
Solution Approach 2:
The system dynamically adapts traffic routing based on service requirements. The H-SMF can dynamically provide updated traffic routing influence information to the V-SMF, allowing flexible configuration of user plane functions to meet varying edge computing service demands without increasing permanent system complexity.
3Productivity
If traffic routing influence information is provided from H-SMF to V-SMF, then traffic routing efficiency is improved, but inter-network signaling overhead deteriorate
Solution Approach 1:
The patent extracts only the essential traffic routing influence information from the H-SMF and transmits it to the V-SMF, rather than transferring complete session management data. This extraction approach enables efficient traffic routing while minimizing inter-network signaling overhead by transmitting only the necessary configuration parameters.
Data Source
AI summary
Techniques for management of a data session in a home routed (HR) session breakout (SBO) mode in a wireless communication system are provided. For example, a method for management of a data session in a HR-SBO mode, comprises: providing, by a home session management function (H-SMF) of a home network to a visited session management function (V-SMF) of a visited network, information on how to influence traffic routing for the data session served by the visited network; and configuring, by the V-SMF, at least a user plane (UP) function based on the information on how to influence traffic routing for the data session.