Local Session Breakout for Edge Computing in Home-Routed Roaming
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Solution Overview
Problem
There is no solution to support the use of edge computing capabilities in Home-Routed roaming scenarios within 5G networks.
Innovation Solution
A method and device for sending specific information to the Visited SMF to enable local session breakout, including EAS information, ECS address, AF information, and session breakout policy, and performing local session breakout by inserting or updating an uplink classifier (ULCL) to select a local data network service server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Home-Routed roaming scenario is used in 5G networks, then roaming functionality is provided, but edge computing capabilities cannot be supported
Solution Approach 1:
The patent introduces an intermediary mechanism between the home network and visited network to enable edge computing in HR roaming. The home SMF acts as a mediator that collects EAS information from the visited network and forwards it to the user equipment, enabling edge computing capabilities while maintaining roaming functionality.
Solution Approach 2:
The patent implements preliminary action by collecting EAS information during the PDU session establishment or modification phase, before the actual data transmission occurs. This allows the network to prepare and configure edge computing parameters in advance, ensuring compatibility and capability support without disrupting existing roaming procedures.
2Productivity
If local session breakout is performed, then data traffic is routed locally to reduce core network burden, but network complexity increases
Solution Approach 1:
The patent implements self-service by enabling the user equipment to autonomously determine whether to use edge computing based on the received EAS information and local conditions. The UE makes the decision to route data through the local edge network or via the core network without requiring complex manual configuration, thereby reducing network operational complexity while maintaining processing efficiency.
Solution Approach 2:
The patent uses parameter changes by dynamically adjusting routing parameters based on EAS information and network conditions. The system can switch between different routing modes (edge routing vs. core network routing) by modifying session parameters, allowing flexible data processing efficiency without permanent complex network reconfiguration.
Data Source
AI summary
A session breakout processing method, a device and a storage medium are provided, including: during a Home-Routed roaming PDU session establishment procedure or modification procedure, a H-SMF sending to a V-SMF one or a combination of the following information: EAS information of the V-PLMN, an ECS address of the V-PLMN, relevant information of an AF of the V-PLMN, information of authorization of local session breakout performed by V-SMF, and a session breakout policy; after V-SMF receiving first information sent by a NF of a H-PLMN, performing a local session breakout; a UPF of a V-PLMN receiving second information initiated by a UE, and sending the second information to the H-SMF; the V-SMF searching for a PCF of the V-PLMN, and performing a SM policy association with the PCF or triggering an SM policy association modification.