AMF Interface Detection for Accurate 5G/4G Roaming Transitions
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Solution Overview
Problem
Telecommunication networks, such as 5G and 4G, struggle to provide accurate instructions for user devices to transition between primary and roaming networks, leading to service interruptions like dropped calls and failed message transmissions.
Innovation Solution
A roaming network interface system uses a single Access and Mobility Management Function (AMF) to identify and provide multiple types of interfaces and instructions for seamless transitions between different network types, ensuring the correct interface is used based on the capabilities of the roaming network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single AMF is used to manage user devices, then network simplicity is improved, but the ability to provide accurate transition instructions for different network types deteriorates
Solution Approach 1:
The patent segments the AMF functionality by creating separate interface management components for different network types (N26 interface for 5G to 5G, S8 interface for 5G to 4G, etc.). Each component handles specific transition scenarios independently, allowing the single AMF to provide accurate instructions for diverse network transitions without overwhelming complexity.
Solution Approach 2:
The single AMF is designed with multi-functionality to handle multiple interface types (N26, S8, and other roaming interfaces) through a unified architecture. The AMF can dynamically select and manage the appropriate interface based on the roaming network type, maintaining both simplicity and reliability across different transition scenarios.
2Ease of operation
If the primary network uses standard interfaces for roaming, then ease of operation is improved, but service continuity deteriorates due to dropped calls and failed messages
Solution Approach 1:
The patent changes the interface parameter selection dynamically based on the roaming network type. Instead of using a fixed interface, the system selects from multiple available interfaces (N26 for 5G roaming, S8 for 4G roaming, or alternative interfaces) based on the destination network's capabilities, ensuring service continuity while maintaining operational simplicity.
Solution Approach 2:
The system implements feedback mechanisms where the AMF receives information about the roaming network type and interface capabilities, then adjusts the transition instructions accordingly. This feedback loop ensures that the correct interface is selected to maintain service continuity, preventing dropped calls and failed messages.
3Adaptability or versatility
If the network provides multiple interface types for roaming transitions, then adaptability is improved, but system complexity increases
Solution Approach 1:
The patent segments interface management into distinct functional components (N26 interface manager, S8 interface manager, etc.), each responsible for specific roaming scenarios. This segmentation allows the system to handle multiple interface types with high adaptability while managing complexity through clear functional separation.
Solution Approach 2:
The AMF acts as an intermediary that mediates between the user device and multiple roaming networks with different interface requirements. It translates and adapts interface instructions to ensure compatibility across different network types, providing versatility while shielding the user from underlying complexity.
Data Source
AI summary
A roaming network interface system receives an indication that a user device using a first network is to transition to a second network. The roaming network interface system determines whether the second network implements an interface between a mobility management entity and an access management function based on the received indication. The roaming network interface system provides instructions to the user device to transition from the first network to the second network based on the determination of whether the second network implements the interface.