5G Network Function Node NAS Cause Code Forwarding via SMS
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Solution Overview
Problem
In 5G networks, Non-Access-Stratum (NAS) cause codes are not visible to users, making it difficult for them to diagnose and resolve issues with their User Equipment (UE), leading to prolonged troubleshooting and dissatisfaction.
Innovation Solution
Transmitting NAS cause codes from a first UE to a second UE, typically a user's device, via an SMS message, allowing users to adjust parameters and address issues directly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If NAS cause codes are kept hidden from users to maintain network security and simplicity, then network operation is simple, but user ability to diagnose and resolve issues is poor
Solution Approach 1:
The patent introduces an intermediary mechanism (SMS messaging system) that bridges the gap between the network core (AMF) and the end user. The AMF sends NAS cause codes to the UE, which then forwards them via SMS to the user's mobile phone, allowing users to receive diagnostic information without requiring changes to the core network architecture or direct user access to proprietary protocols.
Solution Approach 2:
The patent replaces the traditional direct network-to-UE communication channel with an alternative messaging channel (SMS). Instead of requiring users to access complex network protocols or proprietary interfaces, the system substitutes a universally accessible SMS messaging system that users can interact with using standard mobile phone capabilities.
2Loss of time
If NAS cause codes are transmitted to users via SMS, then user feedback speed improves, but network communication overhead increases
Solution Approach 1:
The patent implements partial action by selectively transmitting NAS cause codes only when specific error conditions occur, rather than continuously monitoring and reporting all network states. The AMF sends cause codes only when rejection events happen, and only to UEs that have appropriate SMS capabilities enabled, reducing unnecessary network traffic while still providing timely feedback for actual issues.
3Adaptability or versatility
If the system implements selective SMS transmission based on UE capabilities, then compatibility improves, but system complexity increases
Solution Approach 1:
The patent implements dynamic capability checking where the network system adaptively determines whether a UE supports SMS-based cause code transmission. The AMF checks UE capabilities in real-time and dynamically adjusts the communication method accordingly, enabling the system to work with both SMS-capable and non-SMS-capable UEs without requiring complex pre-configuration or manual setup.
Data Source
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AI summary
The present disclosure provides methods and network function nodes for managing a communication of contents for a first UE. The method includes retrieving subscription data for the first UE from a third NF node, the subscription data indicating an identifier of a second UE which is a target of the contents for the first UE, transmitting the contents and the identifier of the second UE to a second NF node, receiving a message built with the contents from the second NF node, and transmitting the message to the second UE. The present disclosure further provides corresponding computer readable medium.