AMF Automatic TAI List Generation via Handover Signaling
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Solution Overview
Problem
The manual creation of Tracking Area Identity (TAI) lists in 5G mobile networks is tedious and prone to errors, especially with the shift to an As A Service (AAS) model, requiring network operators to manually update lists when new TAIs are added or the network is modified.
Innovation Solution
An Automatic Mobility Management Function (AMF) within the 5G network automatically determines TAI adjacencies based on handover signaling from source and target gNBs, generating and updating TAI lists dynamically, ensuring accurate and real-time representation of the network topology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual creation of TAI lists is performed by network operators, then the TAI list configuration can be customized according to network knowledge, but the process becomes tedious and error-prone
Solution Approach 1:
The system enables self-service by allowing the network infrastructure (gNBs and AMF) to automatically generate and maintain TAI lists through handover signaling, eliminating the need for manual operator intervention. The AMF autonomously processes handover messages to extract TAI adjacency information and maintains the TAI list without human input.
Solution Approach 2:
The manual mechanical process of operators creating TAI lists is replaced by an automated electronic system. The AMF uses machine processing of handover signaling messages to automatically determine TAI adjacencies and generate TAI lists, substituting human manual configuration with automated digital processing.
2Reliability
If manual updates of TAI lists are performed when new TAIs are added, then the TAI list remains synchronized with network changes, but the process requires additional manual intervention and increases error risk
Solution Approach 1:
The system implements feedback by continuously monitoring handover signaling between gNBs. When new TAIs are added to the network, the automated handover messages provide feedback to the AMF, which then automatically updates the TAI list to reflect the new network topology without requiring manual intervention.
Solution Approach 2:
The TAI list maintenance becomes a continuous automated process rather than periodic manual updates. The AMF continuously processes handover signaling to detect and incorporate new TAIs as they are added to the network, ensuring the TAI list remains synchronized through ongoing automated action rather than间断性 manual intervention.
3Productivity
If automatic generation of TAI lists is implemented, then efficiency increases and human error is reduced, but the system complexity increases
Solution Approach 1:
The AMF performs multiple functions: it manages mobility registration, processes handover signaling, determines TAI adjacencies, and generates TAI lists. By making the AMF multi-functional, the patent consolidates what would otherwise require separate systems into a single platform, improving efficiency without proportionally increasing overall system complexity.
Solution Approach 2:
The patent merges the TAI list generation function with the existing AMF handover processing. Instead of creating a separate system for TAI list management, the AMF combines multiple responsibilities (mobility management, handover processing, and TAI list generation) into one unified component, achieving automation efficiency while minimizing additional complexity.
Data Source
AI summary
An access and mobility management function (AMF) of a 5G mobile network receives an uplink non-access stratum (NAS) transport message through a source gNB and that is associated with a user equipment (UE). From this message, the AMF identifies a tracking area identity (TAI) of a first tracking area. During a handover process associated with the UE, the AMF receives a new message that indicates a new TAI for the new tracking area the UE is entering. Using the TAI of the first tracking area and the TAI of the new tracking area, the AMF identifies a new tracking area adjacency. With this new tracking area adjacency, the AMF automatically updates TAI lists to incorporate the new tracking area adjacency.