AMF-N3IWF Warning Relay for Non-3GPP Emergency Messaging
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Solution Overview
Problem
Existing wireless communication systems lack a mechanism to deliver public safety warning messages, such as ETWS and CMAS, to User Equipment (UE) when connected over non-3GPP access networks, leading to potential gaps in emergency notifications.
Innovation Solution
A method and apparatus for transmitting public safety warning messages over non-3GPP access networks using the 3GPP system, involving the AMF entity, N3IWF interface, and UE, utilizing techniques like Non-Access-Stratum (NAS) messages, user plane, and IKEv2 signaling to ensure delivery via non-3GPP access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If UE connects over non-3GPP access network, then wireless data traffic capability is improved, but public safety warning message delivery capability deteriorates
Solution Approach 1:
The patent introduces the N3IWF (Non-3GPP Interworking Function) as an intermediary entity that bridges the non-3GPP access network and the 3GPP core network. The N3IWF receives public safety warning messages from the AMF and forwards them to UEs connected via non-3GPP access, enabling reliable warning message delivery while maintaining the benefits of non-3GPP connectivity. This intermediary resolves the contradiction by providing a translation and relay mechanism between different network access types.
2Reliability
If public safety warning system uses standardized 3GPP components, then system reliability is improved, but adaptability to non-3GPP networks deteriorates
Solution Approach 1:
The patent extends the functionality of existing 3GPP public safety warning components (AMF, N3IWF) to serve dual purposes: maintaining standardized 3GPP warning message delivery while simultaneously supporting non-3GPP access networks. The N3IWF, originally designed for general interworking, is adapted to also handle public safety warning message routing, achieving multi-functionality that resolves the contradiction between standardized reliability and non-3GPP adaptability.
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4g) communication system such as long term evolution (LTE). Embodiments herein disclose a method for transmitting public safety warning messages over a non-3GPP access networks. The method includes receiving, by an Access and Mobility Management Function (AMF) entity of the 3GPP system (100), at least one public safety warning message from Cell Broadcast Entity (CBE) and transmitting, by the AMF entity (160a) of the 3GPP system 3GPP system (100), at least one public safety warning message to a Non-3GPP Interworking Function (N3IWF) interface entity (180a) of the 3GPP system3GPP system (100), where the N3IWF interface entity (180a) connects the AMF entity (160a) to the non-3GPP access network. Further, the method includes transmitting, by the N3IWF interface entity (180a) of the 3GPP system 3GPP system (100), the at least one public safety warning message to at least one User Equipment (UE) over the non-3gpp access.