5G Registration Management via Temporary Identity Flag
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Solution Overview
Problem
In 5G networks, managing registration and session management becomes complex when a terminal switches between 3GPP and non-3GPP access, leading to inefficient resource utilization and potential service disruptions due to coverage loss or access module changes.
Innovation Solution
The method involves processing registration requests and PDU session establishment requests using temporary user identities, with the Access and Mobility Management Function (AMF) determining whether the identity is from a previous 3GPP or non-3GPP access, allowing for seamless relocation or rerouting of sessions to maintain service continuity and optimize resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the terminal uses temporary user ID for registration in 5G network, then the registration process is simplified, but the AMF cannot distinguish whether the ID is from previous 3GPP access or non-3GPP access, leading to complex registration management
Solution Approach 1:
The patent introduces a new flag field in the registration request message that acts as an intermediary indicator to convey the access type information. This flag serves as a mediator between the terminal and AMF, enabling the AMF to distinguish the access type without complicating the overall registration process. The flag field provides the necessary differentiation while maintaining the simplicity of the registration mechanism.
2Reliability
If the terminal maintains both 3GPP and non-3GPP access simultaneously, then service continuity is improved, but resource utilization becomes inefficient due to coverage loss or access module changes
Solution Approach 1:
The patent implements dynamic registration management where the terminal and AMF can flexibly switch between different access types based on availability. The system dynamically determines whether to use 3GPP access, non-3GPP access, or both simultaneously, optimizing resource utilization while maintaining service continuity. This dynamic approach allows the system to adapt to changing network conditions and access module availability.
3Productivity
If the AMF processes registration requests without accessing type information, then the processing is simplified, but the AMF cannot determine whether to relocate or reroute sessions, leading to service disruption
Solution Approach 1:
The patent incorporates the access type information directly into the registration request message before the AMF processes it. By including this information in advance through the flag field, the AMF receives all necessary context up front, enabling immediate and accurate determination of whether to relocate or reroute sessions. This preliminary inclusion of access type information eliminates the need for subsequent complex queries or assumptions.
Data Source
AI summary
A communication technique that combines a 5G communication system for supporting a data rate that is higher than that of a beyond 4G system with IoT technology, and a system thereof are provided. The technique may be applied to intelligent services on the basis of 5G communication technology and IoT related technology, such as smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, etc. A method of performing access deregistration by a user equipment (UE) and an apparatus therefor are provided. The method includes, when the UE is registered on both 3rd generation partnership project (3GPP) access and non-3GPP access, transmitting, to an access and mobility management function (AMF), a deregistration request message to deregister the non-3GPP access over the 3GPP access, and receiving, from the AMF, a deregistration accept message corresponding to the deregistration request message over the 3GPP access.